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EP2479398B2 - Waste gas system for a construction machine - Google Patents
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EP2479398B2 - Waste gas system for a construction machine - Google Patents

Waste gas system for a construction machine

Info

Publication number
EP2479398B2
EP2479398B2 EP11000585.7A EP11000585A EP2479398B2 EP 2479398 B2 EP2479398 B2 EP 2479398B2 EP 11000585 A EP11000585 A EP 11000585A EP 2479398 B2 EP2479398 B2 EP 2479398B2
Authority
EP
European Patent Office
Prior art keywords
exhaust gas
engine
exhaust
finishing machine
opening
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP11000585.7A
Other languages
German (de)
French (fr)
Other versions
EP2479398A1 (en
EP2479398B1 (en
Inventor
Thomas Schmidt
Christian Pawlik
Philipp Stumpf
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Joseph Voegele AG
Original Assignee
Joseph Voegele AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=43979771&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2479398(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Joseph Voegele AG filed Critical Joseph Voegele AG
Priority to EP11000585.7A priority Critical patent/EP2479398B2/en
Priority to PL11000585T priority patent/PL2479398T3/en
Priority to US13/350,004 priority patent/US20120186894A1/en
Priority to IN129DE2012 priority patent/IN2012DE00129A/en
Priority to JP2012007689A priority patent/JP6108262B2/en
Priority to CN201210019567.4A priority patent/CN102619605B/en
Publication of EP2479398A1 publication Critical patent/EP2479398A1/en
Publication of EP2479398B1 publication Critical patent/EP2479398B1/en
Application granted granted Critical
Publication of EP2479398B2 publication Critical patent/EP2479398B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features
    • F01N13/002—Apparatus adapted for particular uses, e.g. for portable devices driven by machines or engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features
    • F01N13/001—Exhaust gas flow channels or chambers being at least partly formed in the structural parts of the engine or machine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features
    • F01N13/08—Other arrangements or adaptations of exhaust conduits
    • F01N13/082—Other arrangements or adaptations of exhaust conduits of tailpipe, e.g. with means for mixing air with exhaust for exhaust cooling, dilution or evacuation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N2260/00—Exhaust treating devices having provisions not otherwise provided for
    • F01N2260/20—Exhaust treating devices having provisions not otherwise provided for for heat or sound protection, e.g. using a shield or specially shaped outer surface of exhaust device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N2590/00—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines
    • F01N2590/08—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines for heavy duty applications, e.g. trucks, buses, tractors, locomotives

Definitions

  • pavers and material feeders are used to create paved surfaces.
  • Commonly used pavers and material feeders are powered by an internal combustion engine.
  • the exhaust gases from the engine are expelled through a long exhaust pipe at the height of the driver's cab to keep them away from the operator.
  • the exhaust pipe is typically mounted on a muffler, which, along with the muffler, is vertically attached to the engine hood in front of the operator's platform.
  • the problem is that the exhaust pipe and the associated silencer obstruct the view of the operator on the control panel. Furthermore, the outward-facing exhaust pipe and silencer are exposed to all weather conditions, which often leads to damage to the exhaust pipe and silencer due to rust.
  • the FR 2 170 753 A5 This describes an exhaust system located under the hood of a construction machine.
  • the exhaust system includes an engine from which an exhaust pipe extends towards a finned opening.
  • the exhaust pipe has a curved end that directs the exhaust gases from the engine into the opening, where they exit along with a cooling airflow generated by a fan and a radiator.
  • the US 5,228,530 A This refers to a lawn tractor whose engine is located under a hood behind the driver's seat.
  • the engine consists of a motor from which exhaust gases are routed through an exhaust pipe and a muffler to an exhaust outlet with a grille.
  • the exhaust gases exit the engine through a section of exhaust pipe and are then carried out through the exhaust outlet with the grille by a cooling airflow generated by a radiator and a fan.
  • the US 4,872,308 A This refers to a machine with a drive unit that includes a damper.
  • the damper is cooled by compressed cooling air generated by a fan, thus reducing the risk of fire in the engine compartment.
  • a mixing chamber is located above an exhaust outlet for the damper to mix the exhaust gases flowing from the damper with cooling air and direct the mixture to an outlet in the engine hood.
  • the invention is based on the objective of improving a construction machine by means of simple design features in such a way that exhaust fumes from the construction machine can be kept away from the operating personnel.
  • the exhaust pipe is not located on the hood of the construction machine.
  • the exhaust pipe is located in the engine compartment, with the exhaust pipe ending under the hood.
  • the exhaust pipe in this invention terminates under the engine hood, the operator has improved visibility while operating the construction machine. Furthermore, the exhaust pipe is protected from dirt and adverse weather conditions under the hood, thus improving its functionality and extending its service life. Additionally, the exhaust pipe, located in the engine compartment, is not at risk of damage during transport. Moreover, complex and expensive folding or plug-in devices for the exhaust pipe are unnecessary.
  • the exhaust pipe includes at least one exhaust outlet nozzle, which directs the exhaust flow and also terminates under the engine hood.
  • a limited and controlled quantity of exhaust gases can leave the engine compartment of the construction machine through the exhaust outlet nozzle.
  • the invention provides an exhaust outlet opening in the engine hood, which is flow-optimized in relation to the exhaust pipe, in particular the exhaust outlet nozzle.
  • the exhaust outlet opening provided in the engine hood ensures the unimpeded escape of combustion gases through the hood.
  • the exhaust outlet nozzle or exhaust pipe opens into the exhaust outlet opening. This ensures that the exhaust gases flowing from the exhaust pipe or exhaust outlet nozzle are completely directed into the exhaust outlet opening.
  • At least one exhaust opening is provided in the engine hood to dissipate waste heat from the engine. This prevents the engine from overheating and being damaged as a result.
  • the at least one exhaust air opening comprises flow ribs to give an outgoing exhaust air stream an outflow direction.
  • the exhaust gas outlet is located next to the exhaust air opening. This ensures that the exhaust gas flow is directed into the exhaust air flow, thereby enabling efficient removal of the exhaust gases from the construction machine.
  • the exhaust system includes at least one cooling fan, which is intended for cooling the engine.
  • the cooling fan has a speed control.
  • an airflow produced by the cooling fan is provided for the removal of engine heat, wherein the airflow heated by the engine heat forms an exhaust airflow from the cooling fan to carry away the combustion gases of the engine.
  • the exhaust airflow Upon exiting the exhaust airflow from the exhaust opening formed in the engine hood, the exhaust airflow meets the exhaust gas flow from the exhaust outlet opening, surrounds and dilutes it, and directs it away from the exhaust outlet opening and away from the operating personnel.
  • a diffuser is provided that can be used to dilute and cool the combustion gases.
  • the diffuser allows the exhaust gases to expand and cool immediately after exiting the combustion engine, thus preventing excessive heating of the exhaust pipe. Furthermore, the diffuser improves the dissipation of generated engine heat, and the cooled exhaust gases released by the diffuser do not unnecessarily raise the ambient temperature of the construction machine's engine.
  • the exhaust pipe is connected to an exhaust aftertreatment system. This system widens and slows the exhaust flow and reduces its vibrations.
  • the exhaust aftertreatment system can include a particulate filter, a catalytic converter, a silencer, etc.
  • the exhaust aftertreatment device is preferably located in the engine compartment of the construction machine. This also makes it possible to protect the exhaust aftertreatment device from adverse weather conditions.
  • the Figure 1 Figure 1 shows a section of a construction machine 100, which includes an exhaust system 1 according to the invention.
  • the construction machine 100 is in particular a road paver or a feeder.
  • the exhaust system 1 has an engine compartment 2 with a hood 3.
  • An internal combustion engine 101 for powering the construction machine is located in the engine compartment 2.
  • An exhaust pipe 4 is positioned in the engine compartment 2, under the hood 3. The exhaust pipe 4 extends upwards to an upper surface of the hood 3, but does not protrude from the hood 3.
  • Exhaust outlet nozzles 5 are provided at one upper end of the exhaust pipe 4, which determine the direction of the exhaust flow as it exits the exhaust system.
  • the exhaust outlet nozzles 5 are arranged side by side, but can also be arranged in any other configuration on the exhaust pipe 4. Furthermore, the exhaust outlet nozzles 5 can have different diameters or different heights.
  • the exhaust outlet nozzles 5 open into the exhaust outlet opening 6. Although it is evident from the Figure 1 If not shown, it is possible that the exhaust outlet nozzles 5 protrude into the exhaust outlet opening 6 over a certain length without protruding significantly from the hood 3.
  • an exhaust opening 7 is provided in the engine hood 3, which is fluidically connected to a cooling fan 102.
  • the cooling fan 102 transports the waste heat from the engine 101 to the exhaust opening 7, where the cooling airflow exits the engine compartment as exhaust air. 2 exits.
  • the exhaust opening 7 occupies a larger part of the surface of the engine hood 3 than the exhaust outlet opening 6.
  • the exhaust outlet opening 6 is located in a lower left area of the exhaust opening 7.
  • the exhaust opening 7 has flow ribs 8 arranged parallel within the exhaust opening 7.
  • the flow ribs 8 assume an inclined position to direct the exhaust airflow forward away from the hood 3.
  • the exhaust outlet opening 6 is located along two sides of the exhaust air opening 7, with the exhaust outlet opening 6 being positioned in front of and beside some flow fins 8, so that when the exhaust air stream exits the exhaust air opening 7, it carries the exhaust gas stream coming from the exhaust outlet opening 6 forward away from the engine hood 3. It is also provided that the exhaust air stream guided by the upper flow fins 8 flows out above the exhaust outlet opening 6, thereby covering the exhaust gases exiting the exhaust outlet opening 6 and keeping the exhaust gases away from the operating personnel.
  • an exhaust aftertreatment device 9 is flanged to the exhaust pipe 4.
  • the exhaust aftertreatment device 9 is located inside the engine compartment 2, below the engine hood 3. Together with the exhaust pipe 4, the exhaust aftertreatment device 9, which includes, for example, a particulate filter, a catalytic converter, a silencer, etc., ensures optimal removal of the combustion gases from the combustion engine.
  • Figure 2 shows an engine arrangement 200, as it can be used for a construction machine 100 according to the invention.
  • the engine arrangement 200 is shown.
  • Figure 1 The illustrated embodiment shows the Figure 2 a diffuser 103, which is connected to the exhaust aftertreatment device 9 via the exhaust pipe 4.
  • the diffuser 103 is designed to dilute and cool the combustion gases.
  • the diffuser which is not shown installed in engine compartment 2, is, according to the invention, fluidically connected to the one in Figure 1
  • the exhaust outlet opening 6 shown is aligned and does not protrude from it.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)
  • Road Paving Machines (AREA)
  • Component Parts Of Construction Machinery (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Ventilation (AREA)
  • Exhaust Gas After Treatment (AREA)

Description

Die vorliegende Erfindung betrifft einen Straßenfertiger oder einen Beschicker.The present invention relates to a road paver or a feeder.

Im Straßenbau werden Straßenfertiger und Beschickerfahrzeuge zur Herstellung von Flächenbefestigungen eingesetzt. Bekannte Straßenfertiger und Beschickerfahrzeuge besitzen als Antrieb einen Verbrennungsmotor. Die Abgase des Verbrennungsmotors werden in bekannter Weise durch ein langes Abgasendrohr in der Höhe des Fahrerdaches ausgeblasen, um die Abgase vom Bedienpersonal fern zu halten. Normalerweise ist das Abgasendrohr auf einem Schalldämpfer angeordnet und ist zusammen mit dem Schalldämpfer auf der Motorhaube vor dem Bedienstand vertikal befestigt.In road construction, pavers and material feeders are used to create paved surfaces. Commonly used pavers and material feeders are powered by an internal combustion engine. The exhaust gases from the engine are expelled through a long exhaust pipe at the height of the driver's cab to keep them away from the operator. The exhaust pipe is typically mounted on a muffler, which, along with the muffler, is vertically attached to the engine hood in front of the operator's platform.

Problematisch dabei ist, dass das Abgasendrohr sowie der damit verbundene Schall-dämpfer die Sicht des auf dem Bedienstand befindlichen Bedienpersonals einschränken. Außerdem ist das nach außen gerichtete Abgasendrohr sowie der nach außen gerichtete Schalldämpfer jeglichen Wetterbedingungen ausgesetzt, wodurch es in der Praxis oft zu Beschädigungen des Abgasrohres und des Schalldämpfers wegen Rostbefall kommt.The problem is that the exhaust pipe and the associated silencer obstruct the view of the operator on the control panel. Furthermore, the outward-facing exhaust pipe and silencer are exposed to all weather conditions, which often leads to damage to the exhaust pipe and silencer due to rust.

Des Weiteren sind in der Praxis Straßenfertiger und Beschickerfahrzeuge bekannt, deren Abgasrohr aufsteckbar bzw. klappbar auf der Motorhaube der Baumaschine angeordnet ist. Folglich kann zum Transportieren des Straßenfertigers auf einem Tieflader das Endrohr abgenommen bzw. derartig zusammengeklappt werden, dass eine entsprechende Transporthöhe eingehalten wird.Furthermore, in practice, road pavers and material feeders are known to have exhaust pipes that can be attached or folded down on the engine hood of the construction machine. Consequently, for transporting the road paver on a low-loader, the exhaust pipe can be removed or folded down in such a way that the required transport height is maintained.

Allerdings hat sich in der Praxis trotz des aufsteckbaren bzw. zusammenklappbaren Abgasendrohres herausgestellt, dass derartige bewegliche Vorrichtungen leicht beschädigt werden. Oftmals ist das Abgasendrohr bzw. der Schalldämpfer dermaßen mit Rost befallen, dass eine Abnahme bzw. Zusammenklappung durch das Bedienpersonal nur schwer oder nicht möglich ist. Hinzu kommt, dass ein abnehmbares Abgasendrohr bzw. ein zusammenklappbares Abgasendrohr verhältnismäßig teuer ist und zur Montage zusätzliches Fachwissen notwendig ist, um einen ordnungsgemäßen Abgasausstoß zu gewährleisten.However, in practice, despite the attachable or foldable exhaust tailpipe, it has been found that such movable devices are easily damaged. Often, the exhaust tailpipe or silencer is so badly corroded that removal or folding by the operator is difficult or impossible. Furthermore, a detachable or foldable exhaust tailpipe is relatively expensive, and its installation requires additional expertise to ensure proper exhaust emission.

Die FR 2 170 753 A5 beschreibt ein Abgassystem, welches unter einer Motorhaube einer Baumaschine angeordnet ist. Das Abgassystem umfasst einen Motor, von dem sich ein Abgasrohr in Richtung einer mit Rippen versehenen Öffnung erstreckt. Das Abgasrohr umfasst ein gebogenes Rohrende, welches die Abgase vom Motor in die Öffnung einleitet, damit die Abgase zusammen mit einem Kühlluftstrom, welcher durch einen Lüfter sowie einen Kühler erzeugt wird, die Öffnung verlassen.The FR 2 170 753 A5 This describes an exhaust system located under the hood of a construction machine. The exhaust system includes an engine from which an exhaust pipe extends towards a finned opening. The exhaust pipe has a curved end that directs the exhaust gases from the engine into the opening, where they exit along with a cooling airflow generated by a fan and a radiator.

Die US 5,228,530 A bezieht sich auf einen Rasenmähertraktor, dessen Antrieb unter einer Motorhaube hinter dem Fahrersitz angeordnet ist. Der Antrieb umfasst einen Motor, von dem Abgase über ein Abgasrohr sowie einen Dämpfer zu einer Abgasöffnung mit einem Abgasgrill geführt werden. Die Abgase verlassen den Antrieb aus einem Auspuffrohrabschnitt und werden dann mit einem Kühlluftstrom, der durch einen Kühler sowie einen Lüfter erzeugt wird, durch die Abgasöffnung mit Abgasgrill hinausbefördert.The US 5,228,530 A This refers to a lawn tractor whose engine is located under a hood behind the driver's seat. The engine consists of a motor from which exhaust gases are routed through an exhaust pipe and a muffler to an exhaust outlet with a grille. The exhaust gases exit the engine through a section of exhaust pipe and are then carried out through the exhaust outlet with the grille by a cooling airflow generated by a radiator and a fan.

Die US 4,872,308 A bezieht sich auf eine Arbeitsmaschine mit einer Antriebseinheit, die einen Dämpfer umfasst. Der Dämpfer wird durch komprimierte Kühlluft, die durch ein Lüfterrad erzeugt wird, gekühlt, so dass ein Brandrisiko im Motorraum reduziert werden kann. Über einer Austrittsöffnung für Abgase aus dem Dämpfer, ist eine Mischkammer angeordnet, um die aus dem Dämpfer herausströmenden Abgase zusammen mit Kühlluft zu vermischen und zu einer Austrittsöffnung der Motorhaube zu leiten.The US 4,872,308 A This refers to a machine with a drive unit that includes a damper. The damper is cooled by compressed cooling air generated by a fan, thus reducing the risk of fire in the engine compartment. A mixing chamber is located above an exhaust outlet for the damper to mix the exhaust gases flowing from the damper with cooling air and direct the mixture to an outlet in the engine hood.

US 2008/0115989 A1 offenbart ein Abgassystem eines Omnibusses, dessen in einem hinteren Teil des Omnibusses in einem Motorraum angeordneter Dieselmotor mit einem außerhalb des Motorraums in einer Kaminkammer angeordneten Abgasnachbehandlungssystem verbunden ist, wobei Abgase sowie Abwärme des Motors über im Dach des Omnibusses vorgesehene Öffnungen an die Umgebung des Omnisbusses oberhalb des Dachs abgegeben werden. US 2008/0115989 A1 Disclosing an exhaust system of a bus, the diesel engine of which is located in an engine compartment in a rear part of the bus and is connected to an exhaust aftertreatment system located outside the engine compartment in a chimney chamber, wherein exhaust gases and waste heat from the engine are released to the environment of the bus above the roof via openings provided in the roof of the bus.

Der Erfindung liegt die Aufgabe zu Grunde, eine Baumaschine mittels einfacher konstruktiver Merkmale dahingehend zu verbessern, dass Abgase der Baumaschine vom Bedienpersonal ferngehalten werden können.The invention is based on the objective of improving a construction machine by means of simple design features in such a way that exhaust fumes from the construction machine can be kept away from the operating personnel.

Diese Aufgabe wird gelöst mit den technischen Merkmalen des Anspruchs 1. Verbesserte Weiterbildungen der Erfindung sind durch die technischen Merkmale der Unteransprüche gegeben.This problem is solved by the technical features of claim 1. Improved embodiments of the invention are given by the technical features of the dependent claims.

Bei der Erfindung ist das Abgasrohr nicht auf der Motorhaube der Baumaschine angeordnet. Im Gegensatz dazu ist bei der Erfindung das Abgasrohr im Motorraum angeordnet, wobei das Abgasrohr unter der Motorhaube endet.In this invention, the exhaust pipe is not located on the hood of the construction machine. In contrast, in this invention, the exhaust pipe is located in the engine compartment, with the exhaust pipe ending under the hood.

Weil bei der Erfindung das Abgasrohr bereits unter der Motorhaube endet, hat der Bediener während des Betriebs der Baumaschine eine verbesserte Sicht. Außerdem kann das Abgasrohr unter der Motorhaube vor Verschmutzungen und schlechten Wetterverhältnissen geschützt werden, wodurch die Funktionalität des Abgasrohres verbessert und die Lebensdauer erhöht werden kann. Außerdem besteht für das im Motorraum angeordnete Abgasrohr während eines Transports nicht das Risiko beschädigt zu werden. Des Weiteren kann auf aufwändige und teure Klapp- bzw. Steckvorrichtungen des Abgasrohres verzichtet werden.Because the exhaust pipe in this invention terminates under the engine hood, the operator has improved visibility while operating the construction machine. Furthermore, the exhaust pipe is protected from dirt and adverse weather conditions under the hood, thus improving its functionality and extending its service life. Additionally, the exhaust pipe, located in the engine compartment, is not at risk of damage during transport. Moreover, complex and expensive folding or plug-in devices for the exhaust pipe are unnecessary.

Vorzugsweise umfasst das Abgasrohr mindestens einen Abgasauslassstutzen, der dem Abgasstrom eine Austrittsrichtung gibt und ebenfalls unter der Motorhaube endet. Durch den Abgasauslassstutzen kann eine begrenzte und zielgerichtete Menge an Abgasen den Motorraum der Baumaschine verlassen.Preferably, the exhaust pipe includes at least one exhaust outlet nozzle, which directs the exhaust flow and also terminates under the engine hood. A limited and controlled quantity of exhaust gases can leave the engine compartment of the construction machine through the exhaust outlet nozzle.

Bei der Erfindung ist in der Motorhaube eine Abgasauslassöffnung vorgesehen, die mit dem Abgasrohr, insbesondere mit dem Abgasauslassstutzen, strömungstechnisch ausgerichtet ist. Die in der Motorhaube vorgesehene Abgasauslassöffnung gewährleistet einen problemlosen Austritt der Verbrennungsgase durch die Motorhaube.The invention provides an exhaust outlet opening in the engine hood, which is flow-optimized in relation to the exhaust pipe, in particular the exhaust outlet nozzle. The exhaust outlet opening provided in the engine hood ensures the unimpeded escape of combustion gases through the hood.

In einer zweckmäßigen Ausführungsform mündet der Abgasauslassstutzen oder das Abgasrohr in der Abgasauslassöffnung. Dadurch wird erreicht, dass die ausströmenden Abgase vom Abgasrohr bzw. vom Abgasauslassstutzen vollständig in die Abgasauslassöffnung eingeleitet werden.In a suitable embodiment, the exhaust outlet nozzle or exhaust pipe opens into the exhaust outlet opening. This ensures that the exhaust gases flowing from the exhaust pipe or exhaust outlet nozzle are completely directed into the exhaust outlet opening.

Erfindungsgemäß ist in der Motorhaube zum Auslass von Abwärme des Motors mindestens eine Abluftöffnung vorgesehen. Dadurch wird verhindert, dass der Motor überhitzt und dadurch beschädiat wird.According to the invention, at least one exhaust opening is provided in the engine hood to dissipate waste heat from the engine. This prevents the engine from overheating and being damaged as a result.

Bei der Erfindung umfasst die mindestens eine Abluftöffnung Strömungsrippen, um einem austretenden Abluftstrom eine Ausströmungsrichtung zu geben.In the invention, the at least one exhaust air opening comprises flow ribs to give an outgoing exhaust air stream an outflow direction.

Vorzugsweise ist die Abgasauslassöffnung neben der Abluftöffnung angeordnet. Dadurch wird erreicht, dass der Abgasstrom in den Abluftstrom geleitet wird, wodurch ein effizienter Abtransport der Abgase von der Baumaschine herstellbar ist.Preferably, the exhaust gas outlet is located next to the exhaust air opening. This ensures that the exhaust gas flow is directed into the exhaust air flow, thereby enabling efficient removal of the exhaust gases from the construction machine.

In einer weiteren Ausführungsform umfasst das Abgassystem mindestens einen Kühllüfter, der zur Kühlung des Motors-vorgesehen ist.In another embodiment, the exhaust system includes at least one cooling fan, which is intended for cooling the engine.

Vorteilhaft ist auch, wenn der Kühllüfter drehzahlgeregelt ist.It is also advantageous if the cooling fan has a speed control.

Ein ausreichender Kühlluftstrom wird dadurch erreicht, wenn der Kühllüfter eine Mindestdrehzahl nicht unterschreiten.Sufficient cooling airflow is achieved when the cooling fan does not fall below a minimum speed.

Erfindungsgemäß ist ein vom Kühllüfter produzierter Luftstrom zum Abtransport der Motorwärme vorgesehen, wobei der durch die Motorwärme erwärmte Luftstrom vom Kühllüfter einen Abluftstrom zur Mitnahme der Verbrennungsgase des Motors bildet. Beim Austritt des Abluftstroms aus der Abluftöffnung, die in der Motorhaube ausgebildet ist, trifft der Abluftstrom mit dem Abgasstrom aus der Abgasauslassöffnung zusammen, umhüllt und verdünnt diesen, und leitet ihn aus der Abgasauslassöffnung bzw. vom Bedienpersonal weg.According to the invention, an airflow produced by the cooling fan is provided for the removal of engine heat, wherein the airflow heated by the engine heat forms an exhaust airflow from the cooling fan to carry away the combustion gases of the engine. Upon exiting the exhaust airflow from the exhaust opening formed in the engine hood, the exhaust airflow meets the exhaust gas flow from the exhaust outlet opening, surrounds and dilutes it, and directs it away from the exhaust outlet opening and away from the operating personnel.

Vorzugsweise ist ein Diffusor vorgesehen, der zur Verdünnung und Abkühlung der Verbrennungsgase einsetzbar ist. Durch den Diffusor können die Abgase direkt nach dem Austritt aus dem Verbrennungsmotor entspannt und abgekühlt werden, so dass eine übermäßige Erhitzung des Abgasrohres ausbleibt. Außerdem gelingt durch den Diffusor ein verbesserter Abtransport von erzeugter Motorwärme, wobei die durch den Diffusor abgegebenen abgekühlten Abgase die Umgebungstemperatur des Motors der Baumaschine nicht unnötig erhitzen.Preferably, a diffuser is provided that can be used to dilute and cool the combustion gases. The diffuser allows the exhaust gases to expand and cool immediately after exiting the combustion engine, thus preventing excessive heating of the exhaust pipe. Furthermore, the diffuser improves the dissipation of generated engine heat, and the cooled exhaust gases released by the diffuser do not unnecessarily raise the ambient temperature of the construction machine's engine.

Vorteilhaft ist auch, wenn das Abgasrohr mit einer Abgasnachbehandlungsvorrichtung verbunden ist. Durch die Abgasnachbehandlungsvorrichtung kann der Abgasstrom geweitet, verlangsamt und dessen Schwingungen abgeschwächt werden. Die Abgasnachbehandlungsvorrichtung kann einen Partikelfilter, einen Katalysator, einen Schalldämpfer usw. umfassen.It is also advantageous if the exhaust pipe is connected to an exhaust aftertreatment system. This system widens and slows the exhaust flow and reduces its vibrations. The exhaust aftertreatment system can include a particulate filter, a catalytic converter, a silencer, etc.

Um eine Schallabstrahlung des Abgassystems zu reduzieren, ist die Abgasnachbehandlungsvorrichtung vorzugsweise im Motorraum der Baumaschine angeordnet. Damit ist es auch möglich, die Abgasnachbehandlungsvorrichtung vor schlechten Wettereinflüssen zu schützen.To reduce noise emissions from the exhaust system, the exhaust aftertreatment device is preferably located in the engine compartment of the construction machine. This also makes it possible to protect the exhaust aftertreatment device from adverse weather conditions.

Die Erfindung wird anhand der nachfolgenden Figuren erläutert, wobei

  • Figur 1 eine erfindungsgemäße Ausführungsform, umfassend eine in den Absätzen [0034] und [0035] beschriebene, erfindungsgemäße Anordnung einer Abluftöffnung mit Strömungsrippen sowie einer Abgasauslassöffnung, zeigt, und
  • Figur 2 eine für die Erfindung verwendete Motoranordnung zeigt.
The invention is explained with reference to the following figures, wherein
  • Figure 1 an embodiment according to the invention, comprising an arrangement according to the invention of an exhaust air opening with flow ribs and an exhaust gas outlet opening as described in paragraphs [0034] and [0035], and
  • Figure 2 The illustration shows a motor arrangement used for the invention.

Die Figur 1 zeigt einen Ausschnitt aus einer Baumaschine 100, die ein erfindungsgemäßes Abgassystem 1 umfasst. Bei der Baumaschine 100 handelt es sich insbesondere um einen Straßenfertiger oder um einen Beschicker.The Figure 1 Figure 1 shows a section of a construction machine 100, which includes an exhaust system 1 according to the invention. The construction machine 100 is in particular a road paver or a feeder.

Das Abgassystem 1 weist einen Motorraum 2 mit einer Motorhaube 3 auf. Im Motorraum 2 ist ein Verbrennungsmotor 101 zum Antrieb der Baumaschine angeordnet. Im Motorraum 2, unter der Motorhaube 3, ist ein Abgasrohr 4 positioniert. Das Abgasrohr 4 erstreckt sich aufwärts zu einer oberen Oberfläche der Motorhaube 3, ragt allerdings nicht aus der Motorhaube 3 heraus.The exhaust system 1 has an engine compartment 2 with a hood 3. An internal combustion engine 101 for powering the construction machine is located in the engine compartment 2. An exhaust pipe 4 is positioned in the engine compartment 2, under the hood 3. The exhaust pipe 4 extends upwards to an upper surface of the hood 3, but does not protrude from the hood 3.

An einem oberen Ende des Abgasrohres 4 sind Abgasauslassstutzen 5 vorgesehen, durch die eine Richtung des Abgasstroms beim Austritt aus dem Abgassystem bestimmt werden kann. Die Abgasauslassstutzen 5 sind nebeneinander angeordnet, können jedoch auch in einer anderen beliebigen Formation auf dem Abgasrohr 4 angeordnet sein. Außerdem ist es möglich, die Abgasauslassstutzen 5 mit unterschiedlichen Durchmessern bzw. unterschiedlichen Höhen zu versehen.Exhaust outlet nozzles 5 are provided at one upper end of the exhaust pipe 4, which determine the direction of the exhaust flow as it exits the exhaust system. The exhaust outlet nozzles 5 are arranged side by side, but can also be arranged in any other configuration on the exhaust pipe 4. Furthermore, the exhaust outlet nozzles 5 can have different diameters or different heights.

Die Figur 1 zeigt auch, dass in der Motorhaube 3 eine Abgasauslassöffnung 6 vorgesehen ist, die mit dem Abgasrohr 4 oder in diesem Fall mit dem Abgasauslassstutzen 5 strömungstechnisch ausgerichtet ist. Dabei ist die Abgasauslassöffnung 6 derartig geformt, dass ein Abgasstrom nach vorn von der Motorhaube 3 und deshalb auch vom Bedienpersonal weggeleitet wird.The Figure 1 This also shows that an exhaust outlet opening 6 is provided in the engine hood 3, which is flow-optimized in relation to the exhaust pipe 4 or, in this case, to the exhaust outlet nozzle 5. The exhaust outlet opening 6 is shaped in such a way that an exhaust flow is directed forward away from the engine hood 3 and therefore also away from the operating personnel.

Ebenfalls ist aus der Figur 1 entnehmbar, dass die Abgasauslassstutzen 5 in der Abgasauslassöffnung 6 münden. Obwohl es durch die Figur 1 nicht gezeigt ist, kann es sein, dass die Abgasauslassstutzen 5 über eine bestimmte Länge in die Abgasauslassöffnung 6 ragen, ohne dabei wesentlich aus der Motorhaube 3 hervorzustehen.Also from the Figure 1 It can be inferred that the exhaust outlet nozzles 5 open into the exhaust outlet opening 6. Although it is evident from the Figure 1 If not shown, it is possible that the exhaust outlet nozzles 5 protrude into the exhaust outlet opening 6 over a certain length without protruding significantly from the hood 3.

In der Motorhaube 3 ist des Weiteren eine Abluftöffnung 7 vorgesehen, die mit einem Kühllüfter 102 strömungstechnisch verbunden ist. Der Kühllüfter 102 transportiert die Abwärme des Motors 101 zur Abluftöffnung 7, wo der Kühlluftstrom als Abluftstrom den Motorraum 2 verlässt. Flächenmäßig nimmt die Abluftöffnung 7 einen größeren Teil der Oberfläche der Motorhaube 3 ein als die Abgasauslassöffnung 6. Dabei befindet sich die Abgasauslassöffnung 6 in einem unteren linken Bereich der Abluftöffnung 7.Furthermore, an exhaust opening 7 is provided in the engine hood 3, which is fluidically connected to a cooling fan 102. The cooling fan 102 transports the waste heat from the engine 101 to the exhaust opening 7, where the cooling airflow exits the engine compartment as exhaust air. 2 exits. In terms of surface area, the exhaust opening 7 occupies a larger part of the surface of the engine hood 3 than the exhaust outlet opening 6. The exhaust outlet opening 6 is located in a lower left area of the exhaust opening 7.

Wie durch die Figur 1 gezeigt wird, weist die Abluftöffnung 7 Strömungsrippen 8 auf, die parallel in der Abluftöffnung 7 angeordnet sind. Die Strömungsrippen 8 nehmen dabei eine geneigte Position ein, um den Abluftstrom nach vorn von der Motorhaube 3 weg zu leiten.As through the Figure 1 As shown, the exhaust opening 7 has flow ribs 8 arranged parallel within the exhaust opening 7. The flow ribs 8 assume an inclined position to direct the exhaust airflow forward away from the hood 3.

Entlang zwei Seiten der Abluftöffnung 7 liegt die Abgasauslassöffnung 6 an, wobei die Abgasauslassöffnung 6 vor und neben einigen Strömungsrippen 8 angeordnet ist, so dass der Abluftstrom beim Verlassen der Abluftöffnung 7 den aus der Abgasöffnung 6 kommenden Abgasstrom nach vorn von der Motorhaube 3 weg mitnimmt. Vorgesehen ist auch, dass der von den oberen Strömungsrippen 8 geleitete Abluftstrom über der Abgasauslassöffnung 6 ausströmt, und dadurch die ausströmenden Abgase aus der Abgasauslassöffnung 6 bedeckt, so dass die Abgase vom Bedienpersonal ferngehalten werden.The exhaust outlet opening 6 is located along two sides of the exhaust air opening 7, with the exhaust outlet opening 6 being positioned in front of and beside some flow fins 8, so that when the exhaust air stream exits the exhaust air opening 7, it carries the exhaust gas stream coming from the exhaust outlet opening 6 forward away from the engine hood 3. It is also provided that the exhaust air stream guided by the upper flow fins 8 flows out above the exhaust outlet opening 6, thereby covering the exhaust gases exiting the exhaust outlet opening 6 and keeping the exhaust gases away from the operating personnel.

Außerdem ist an das Abgasrohr 4 eine Abgasnachbehandlungsvorrichtung 9 angeflanscht. Die Abgasnachbehandlungsvorrichtung 9 befindet sich innerhalb des Motorraums 2, unterhalb der Motorhaube 3. Gemeinsam mit dem Abgasrohr 4 stellt die Abgasnachbehandlungsvorrichtung 9, die z.B. einen Partikelfilter, einen Katalysator, einen Schalldämpfer usw. umfasst, einen optimalen Abtransport der Verbrennungsgase vom Verbrennungsmotor sicher.Furthermore, an exhaust aftertreatment device 9 is flanged to the exhaust pipe 4. The exhaust aftertreatment device 9 is located inside the engine compartment 2, below the engine hood 3. Together with the exhaust pipe 4, the exhaust aftertreatment device 9, which includes, for example, a particulate filter, a catalytic converter, a silencer, etc., ensures optimal removal of the combustion gases from the combustion engine.

Figur 2 zeigt eine Motoranordnung 200, wie sie für eine Baumaschine 100 gemäß der Erfindung verwendbar ist. Zusätzlich zu dem in Figur 1 gezeigten Ausführungsbeispiel zeigt die Figur 2 einen Diffusor 103, der durch das Abgasrohr 4 mit der Abgasnachbehandlungsvorrichtung 9 verbunden ist. Der Diffusor 103 ist zur Verdünnung und Abkühlung der Verbrennungsgase vorgesehen. Obwohl die Motoranordnung 200 der Figur 2 nicht im Motorraum 2 verbaut gezeigt ist, ist erfindungsgemäß der Diffusor strömungstechnisch mit der in Figur 1 gezeigten Abgasauslassöffnung 6 ausgerichtet und ragt nicht aus dieser heraus. Figure 2 Figure 200 shows an engine arrangement 200, as it can be used for a construction machine 100 according to the invention. In addition to the one shown in Figure 200, the engine arrangement 200 is shown. Figure 1 The illustrated embodiment shows the Figure 2 a diffuser 103, which is connected to the exhaust aftertreatment device 9 via the exhaust pipe 4. The diffuser 103 is designed to dilute and cool the combustion gases. Although the engine arrangement 200 of the Figure 2 The diffuser, which is not shown installed in engine compartment 2, is, according to the invention, fluidically connected to the one in Figure 1 The exhaust outlet opening 6 shown is aligned and does not protrude from it.

Claims (13)

  1. Road finishing machine or charger comprising:
    an exhaust gas system (1) having an engine compartment (2) with an engine hood (3), and
    an exhaust gas pipe (4) which carries off combustion gases from the engine (101) of the road finishing machine or the charger (100), wherein the exhaust gas pipe (4) is mounted in the engine compartment (2), characterized in that the exhaust gas pipe (4) ends underneath the engine hood (3), wherein an exhaust gas outlet opening (6) is provided in the engine hood (3), which is oriented fluidically with the exhaust gas pipe (4), and wherein at least one hot air opening (7) is provided in the engine hood (3) for the outlet of heated air of the engine (101), the at least one hot air opening (7) comprises flow fins (8) in order to provide an outflowing flow of heated air with a flowout direction, wherein the flow fins (8) are arranged in parallel in the hot air opening (7) and adopt an inclined position in order to conduct the heated air flow forwards, away from the engine hood (3), wherein the exhaust gas outlet opening (6) is adjacent along two sides of the hot air opening (7), wherein the exhaust gas outlet opening (6) is arranged in front of and next to some flow fins (8) so that the hot air flow carries the exhaust gas flow flowing out of the exhaust gas opening (6) forwards, away from the engine hood (3), as it flows out of the hot air opening (7), and that the exhaust gas outlet opening (6) and the hot air opening (7) are configured such that a hot air flow from the hot air opening (7) and conducted by upper flow fins (8) is flowing out above of the exhaust gas outlet opening (6), thereby covering the exhaust gases flowing out of the exhaust gas outlet opening (6), in order to keep the exhaust gas away from the operating staff.
  2. Road finishing machine or charger according to claim 1, characterized in that the exhaust gas pipe (4) comprises at least one exhaust gas outlet port (5) which provides the exhaust gas flow with a flowout direction and ends underneath the engine hood (3).
  3. Road finishing machine or charger according to claim 2, characterized in that the exhaust gas outlet opening (6) is oriented fluidically with the exhaust gas outlet port (5).
  4. Road finishing machine or charger according to claim 2 and 3, characterized in that the exhaust gas outlet port (5) or the exhaust gas pipe (4) end in the exhaust gas outlet opening (6).
  5. Road finishing machine or charger according to one of the previous claims, characterized in that the exhaust gas outlet opening (6) is arranged next to the hot air opening (7) so as to conduct the exhaust gas flow into the heated air flow.
  6. Road finishing machine or charger according to one of previous claims, characterized by at least one cooling fan (102) which is provided to cool the engine (101).
  7. Road finishing machine or charger according to claim 6, characterized in that the cooling fan (102) is speed-controlled so as to ensure a sufficient cooling capacity.
  8. Road finishing machine or charger according to claim 6 or 7, characterized in that the cooling fan (102) does not fall below a minimum speed.
  9. Road finishing machine or charger according to one of claims 6 to 8, characterized in that an air flow produced by the cooling fan (102) is provided to carry off the engine heat, wherein the air flow from the cooling fan (102), heated by the engine heat, forms an heated air flow for carrying off the combustion gases of the engine (101).
  10. Road finishing machine or charger according to one of the previous claims, characterized by a diffuser (103) which is provided to dilute and cool the combustion gases.
  11. Road finishing machine or charger according to one of the previous claims, characterized by an exhaust gas aftertreatment device (9) which is connected to the exhaust gas pipe (4).
  12. Road finishing machine or charger according to claim 11, characterized in that the exhaust gas aftertreatment device (9) is mounted in the engine compartment (2) of the building machine (100).
  13. Road finishing machine or charger according to one of the previous claims, characterized in that in terms of the surface area, the hot air opening (7) covers a greater part of the surface of the engine hood (3) than the exhaust gas outlet opening (6).
EP11000585.7A 2011-01-25 2011-01-25 Waste gas system for a construction machine Active EP2479398B2 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP11000585.7A EP2479398B2 (en) 2011-01-25 2011-01-25 Waste gas system for a construction machine
PL11000585T PL2479398T3 (en) 2011-01-25 2011-01-25 Road paver or feeder
US13/350,004 US20120186894A1 (en) 2011-01-25 2012-01-13 Exhaust gas system for a building machine
IN129DE2012 IN2012DE00129A (en) 2011-01-25 2012-01-13
JP2012007689A JP6108262B2 (en) 2011-01-25 2012-01-18 Exhaust system of construction machinery
CN201210019567.4A CN102619605B (en) 2011-01-25 2012-01-20 For the vent systems of construction machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP11000585.7A EP2479398B2 (en) 2011-01-25 2011-01-25 Waste gas system for a construction machine

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EP2479398A1 EP2479398A1 (en) 2012-07-25
EP2479398B1 EP2479398B1 (en) 2017-05-03
EP2479398B2 true EP2479398B2 (en) 2026-01-14

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EP (1) EP2479398B2 (en)
JP (1) JP6108262B2 (en)
CN (1) CN102619605B (en)
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CN102619605A (en) 2012-08-01
EP2479398A1 (en) 2012-07-25
CN102619605B (en) 2015-08-19
US20120186894A1 (en) 2012-07-26
JP2012154166A (en) 2012-08-16
JP6108262B2 (en) 2017-04-05
PL2479398T3 (en) 2017-10-31
IN2012DE00129A (en) 2015-05-22
EP2479398B1 (en) 2017-05-03

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