JPH0672546B2 - General-purpose two-cylinder engine - Google Patents
General-purpose two-cylinder engineInfo
- Publication number
- JPH0672546B2 JPH0672546B2 JP24377386A JP24377386A JPH0672546B2 JP H0672546 B2 JPH0672546 B2 JP H0672546B2 JP 24377386 A JP24377386 A JP 24377386A JP 24377386 A JP24377386 A JP 24377386A JP H0672546 B2 JPH0672546 B2 JP H0672546B2
- Authority
- JP
- Japan
- Prior art keywords
- cylinder
- engine
- cylinders
- crankshafts
- plane
- 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.)
- Expired - Fee Related
Links
Landscapes
- Characterised By The Charging Evacuation (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は平行する二つのクランク軸を備えた汎用二気筒
エンジンに関する。Description: FIELD OF THE INVENTION The present invention relates to a general purpose two-cylinder engine with two parallel crankshafts.
（従来の技術及び発明が解決しようとする問題点） 軸線を平行させて二つのシリンダを設け、前記二つのシ
リンダに対応させ、且つ二つのシリンダの軸線を含む平
面に直交させて二本のクランク軸を平行に配設した汎用
二気筒エンジンでは、出力軸を各クランク軸両端の計四
ヶ所から取り出すことが可能となるが、各シリンダに連
結される吸、排気管や、吸、排気管に接続されるエアク
リーナ、マフラ等の配置如何によっては出力軸を四ヶ所
から取り出すことが不能となり、またエンジンが不要に
大型化する不具合を生ずる。(Problems to be Solved by the Related Art and Invention) Two cylinders are provided with their axes parallel to each other, and the two cranks are made to correspond to the two cylinders and are orthogonal to a plane including the axes of the two cylinders. In a general-purpose two-cylinder engine with shafts arranged in parallel, it is possible to take out the output shaft from a total of four places on both ends of each crankshaft, but the intake, exhaust pipe, intake and exhaust pipes connected to each cylinder Depending on the arrangement of the air cleaner, muffler, etc. connected, it becomes impossible to take out the output shaft from four places, and the engine becomes unnecessarily large.
本発明は前記事情に鑑み案出されたものであって、本発
明の目的は、コンパクト化を図りつつ出力軸を四ヶ所か
ら取り出せることができる平行する二つのクランク軸を
備えた汎用二気筒エンジンを提供するにある。The present invention has been devised in view of the above circumstances, and an object of the present invention is to provide a general-purpose two-cylinder engine having two parallel crankshafts capable of taking out output shafts from four locations while achieving compactness. To provide.
（問題点を解決するための手段及び作用） 本発明は前記目的を達成するため、各吸気管（67），
（69）を各シリンダ（13），（15）のクランク軸長手方
向の一側寄りに配置し、前記吸気管（67），（69）に接
続するエアクリーナ（73）を、一方のシリンダ（13）の
外側で他方のシリンダ（15）とは反対の箇所に二つのシ
リンダ（13），（15）の軸線（13A），（15A）を含む平
面（21）にほぼ直交する方向に延出させて配置し、各排
気管（77），（79）を各シリンダ（13），（15）のクラ
ンク軸長手方向の他側寄りに配置し、前記排気管（7
7），（79）に接続するマフラ（81）を、他方のシリン
ダ（15）の外側で一方のシリンダ（13）とは反対の箇所
に前記平面（21）にほぼ直交する方向に延出させて配置
し、エンジン（１）のコンパクト化を図りつつ、出力軸
を二本のクランク軸（17），（19）両端の計四ヶ所から
取り出せるようにした。(Means and Actions for Solving Problems) In order to achieve the above-mentioned object, the present invention provides each intake pipe (67),
(69) is arranged on one side of each cylinder (13), (15) in the longitudinal direction of the crankshaft, and the air cleaner (73) connected to the intake pipes (67), (69) is connected to one cylinder (13). ) Outside the other cylinder (15) at a location opposite to the other cylinder (15), extending in a direction substantially orthogonal to the plane (21) containing the axes (13A) and (15A) of the two cylinders (13) and (15). The exhaust pipes (77) and (79) on the other side of the cylinders (13) and (15) in the longitudinal direction of the crankshaft.
The muffler (81) connected to 7) and (79) is extended outside the other cylinder (15) at a location opposite to the one cylinder (13) in a direction substantially orthogonal to the plane (21). In order to make the engine (1) compact, the output shaft can be taken out from a total of four places on both ends of the two crankshafts (17) and (19).
（実施例） 以下、本発明の好適一実施例を添付図面に従って説明す
る。(Embodiment) A preferred embodiment of the present invention will be described below with reference to the accompanying drawings.
第１図はエンジンの平面図、第２図は第１図のII矢視か
ら見たエンジンの要部断面正面図、第３図は第１図のII
I矢視から見たエンジンの要部断面側面図、第４図は第
１図のIV矢視図を示す。FIG. 1 is a plan view of the engine, FIG. 2 is a sectional front view of an essential part of the engine seen from the arrow II in FIG. 1, and FIG. 3 is II in FIG.
FIG. 4 is a sectional side view of the main part of the engine viewed from the direction of arrow I, and FIG. 4 is a view from the direction of arrow IV of FIG.
（１）は４サイクル二気筒エンジン、（３）はシリンダ
ブロック、（５）はシリンダヘッド、（７）はヘッドカ
バー、（９）はロアケース、（11）はギヤケースカバー
で、エンジン（１）は軸線（13A），（15A）を平行させ
た二つのシリンダ（13），（15）を備える。(1) is a 4-cycle two-cylinder engine, (3) is a cylinder block, (5) is a cylinder head, (7) is a head cover, (9) is a lower case, (11) is a gear case cover, and the engine (1) is an axis line. Two cylinders (13) and (15) in which (13A) and (15A) are parallel are provided.
クランク軸（17），（19）は前記シリンダ（13），（1
5）に対応させ、且つ前記軸線（13A），（15A）を含む
平面（21）に直交させて互いに平行に設ける。The crankshafts (17) and (19) are the cylinders (13) and (1
It is provided in parallel with each other, corresponding to 5) and orthogonal to the plane (21) including the axes (13A) and (15A).
前記シリンダ（13），（15）には夫々ピストン（23）を
嵌装し、各ピストン（23）とクランク軸（17），（19）
を夫々コンロッド（25）で連結する。Pistons (23) are fitted in the cylinders (13) and (15) respectively, and the pistons (23) and the crankshafts (17) and (19) are mounted.
Are connected with connecting rods (25).
前記各シリンダ（13），（15）上には夫々吸気弁（27）
と排気弁（29）を配設し、吸気弁（27）と排気弁（29）
は夫々カム軸（31）の回動によりプッシュロッド（3
3）、ロッカアーム（35）を介して開閉駆動する。An intake valve (27) is provided on each of the cylinders (13) and (15).
And exhaust valve (29) are installed, and intake valve (27) and exhaust valve (29)
The push rod (3
3), open and close through the rocker arm (35).
前記クランク軸（17），（19）はシリンダブロック
（３）とロアケース（９）の合せ部の軸受部（37），
（39）で回転自在に支持し、一方のクランク軸（17）の
長手方向の一側寄りにはフライホイール（41）を取付
け、フライホイール（41）にはエンジン始動用のリング
ギヤ（43）を取着し、フライホイール（41）及びリング
ギヤ（43）はカバー（45）で覆い、図中（47）はオイル
フィルターを示す。The crankshafts (17) and (19) are bearing portions (37) at the fitting portion of the cylinder block (3) and the lower case (9),
It is rotatably supported by (39), a flywheel (41) is attached to one crankshaft (17) at one side in the longitudinal direction, and a ring gear (43) for engine start is attached to the flywheel (41). After attachment, the flywheel (41) and the ring gear (43) are covered with a cover (45), and (47) in the figure shows an oil filter.
前記両クランク軸（17），（19）及びカム軸（31）の他
側は、シリンダブロック（３）とロアケース（９）とギ
ヤケース（11）とで画成されたギヤ室（49）内に延出
し、クランク軸（17），（19）及びカム軸（31）等を歯
車機構（51）で接続し、実施例では双方のクランク軸
（17），（19）をギア室（49）から突出させて出力軸と
して用いている。The other side of both the crank shafts (17) and (19) and the cam shaft (31) is inside a gear chamber (49) defined by a cylinder block (3), a lower case (9) and a gear case (11). The extension, the crank shafts (17) and (19), the cam shaft (31), etc. are connected by the gear mechanism (51), and in the embodiment, both crank shafts (17) and (19) are connected to the gear chamber (49). It is projected and used as an output shaft.
前記歯車機構（51）は各クランク軸（17），（19）に夫
々取着され、クランク軸（17），（19）を互いに逆向き
に同一回転速度で回動するクランク軸歯車（53），（5
5）と、カム軸（31）に取着され一方のクランク軸（1
7）の歯車（57）に噛合するカム軸歯車（59）と、一方
のクランク軸（17）のクランク軸歯車（53）に噛合する
ガバナ駆動用歯車（61）、オイルポンプ駆動用歯車（6
3）等で構成する。The gear mechanism (51) is attached to each of the crankshafts (17) and (19), and the crankshaft gears (53) rotate the crankshafts (17) and (19) in opposite directions at the same rotational speed. ,(Five
5) and one of the crankshafts (1) attached to the camshaft (31)
Cam shaft gear (59) that meshes with the gear (57) of FIG. 7), governor drive gear (61) that meshes with the crank shaft gear (53) of one crankshaft (17), and oil pump drive gear (6
3) etc.
前記各シリンダ（13），（15）上の吸気通路（65）に接
続する吸気管（67），（69）はシリンダヘッド（５）の
一側から夫々突設し、他方の吸気管（69）は前記平面
（21）にほぼ平行させて一方の吸気管（67）側に延出さ
せ、両吸気管（67），（69）を気化器（71）に連結し、
気化器（71）はエアクリーナ（73）に連結する。The intake pipes (67) and (69) connected to the intake passages (65) on the cylinders (13) and (15) are respectively projectingly provided from one side of the cylinder head (5) and the other intake pipe (69). ) Is substantially parallel to the plane (21) and extends to one intake pipe (67) side, and both intake pipes (67) and (69) are connected to the carburetor (71),
The vaporizer (71) is connected to the air cleaner (73).
前記エアクリーナ（73）は一方のシリンダ（13）が位置
するシリンダヘッド（５）の外側方で、且つ他方のシリ
ンダ（15）とは反対の箇所に前記平面（21）とほぼ直交
する方向に延出させて配設する。The air cleaner (73) extends outside the cylinder head (5) where one cylinder (13) is located and at a position opposite to the other cylinder (15) in a direction substantially orthogonal to the plane (21). Let it out and place it.
前記各シリンダ（13），（15）上の排気通路（75）に接
続する排気管（77），（79）はシリンダヘッド（５）の
他側から夫々突設し、一方の排気管（77）は前記平面
（21）にほぼ平行させて他方の排気管（79）側に延出さ
せ、両排気管（77），（79）を合流させたのちマフラ
（81）に連結する。Exhaust pipes (77) and (79) connected to the exhaust passages (75) on the cylinders (13) and (15) respectively project from the other side of the cylinder head (5) and one of the exhaust pipes (77) ) Is substantially parallel to the plane (21) and extends to the other exhaust pipe (79) side, and both exhaust pipes (77) and (79) are joined and then connected to the muffler (81).
前記マフラ（81）は他方のシリンダ（15）が位置するシ
リンダヘッド（５）の外側方で、且つ一方のシリンダ
（13）とは反対の箇所に前記平面（21）とほぼ直交する
方向に延出させて配設する。The muffler (81) extends outside the cylinder head (5) where the other cylinder (15) is located and at a location opposite to the one cylinder (13) in a direction substantially orthogonal to the plane (21). Let it out and place it.
本実施例は前記のように構成したので、クランク軸（1
7），（19）の長手方向にはエアクリーナ（73）やマフ
ラ（81）等のエンジン補器類は存在せず、従って両クラ
ンク軸（17），（19）の両端から出力軸を取り出すこと
が可能となる。Since the present embodiment is configured as described above, the crankshaft (1
In the longitudinal direction of 7) and (19), there are no engine accessories such as air cleaner (73) and muffler (81). Therefore, take out the output shaft from both ends of both crankshafts (17) and (19). Is possible.
また、エアクリーナ（73）とマフラ（81）はクランク軸
（17），（19）の長手方向に突出せず、シリンダヘッド
（５）の両側で夫々クランク軸（17），（19）に平行し
て延出することになるので、第１図に示すようにエンジ
ン（１）のコンパクト化を図れ、例えばエンジン（１）
を立方体状のスペースに配置することも可能となる。Also, the air cleaner (73) and the muffler (81) do not project in the longitudinal direction of the crankshafts (17) and (19), and are parallel to the crankshafts (17) and (19) on both sides of the cylinder head (5), respectively. As shown in FIG. 1, the engine (1) can be made compact, for example, the engine (1).
Can be arranged in a cubic space.
更に、エンジン（１）のクランク軸長手方向の幅を短縮
できるので、クランク軸を垂直置きとしたバーチカルエ
ンジンにおいては、エンジンの全高を低くすることがで
きる。Furthermore, since the width of the engine (1) in the longitudinal direction of the crankshaft can be shortened, in a vertical engine in which the crankshaft is placed vertically, the overall height of the engine can be reduced.
（発明の効果） 以上の説明で明らかなように本発明によれば、コンパク
ト化を図りつつ出力軸を四ヶ所から取り出せることがで
きる平行する二つのクランク軸を備えた汎用二気筒エン
ジンを得ることができる。(Effects of the Invention) As is apparent from the above description, according to the present invention, it is possible to obtain a general-purpose two-cylinder engine having two parallel crankshafts capable of taking out output shafts from four locations while achieving compactness. You can
【図面の簡単な説明】 第１図はエンジンの平面図、第２図は第１図のII矢視か
ら見たエンジンの要部断面正面図、第３図は第１図のII
I矢視から見たエンジンの要部断面側面図、第４図は第
１図のIV矢視図である。 尚図面中（１）はエンジン、（13），（15）はシリン
ダ、（17），（19）はクランク軸、（67），（69）は吸
気管、（71）は気化器、（77），（79）は排気管、（8
1）はマフラである。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan view of the engine, FIG. 2 is a sectional front view of an essential part of the engine seen from the arrow II in FIG. 1, and FIG. 3 is II in FIG.
FIG. 4 is a sectional side view of the main part of the engine viewed from the direction of arrow I, and FIG. 4 is a view from the direction of arrow IV of FIG. In the drawing, (1) is an engine, (13) and (15) are cylinders, (17) and (19) are crankshafts, (67) and (69) are intake pipes, (71) is a carburetor, and (77). ), (79) are exhaust pipes, (8
1) is a muffler.
Claims (1)
軸線を含む平面（21）に直交させて二本のクランク軸を
平行に配設し、 前記各シリンダにはエアクリーナに接続する吸気管を夫
々連結すると共に、マフラに接続する排気管を夫々連結
した汎用二気筒エンジンにおいて、 前記各吸気管を各シリンダのクランク軸長手方向の一側
寄りに配置し、 前記吸気管に接続するエアクリーナを、一方のシリンダ
の外側で他方のシリンダとは反対の箇所に前記平面（2
1）にほぼ直交する方向に延出させて配置し、 前記各排気管を各シリンダのクランク軸長手方向の他側
寄りに配置し、 前記排気管に接続するマフラを、他方のシリンダの外側
で一方のシリンダとは反対の箇所に前記平面（21）にほ
ぼ直交する方向に延出させて配置したことを特徴とする
汎用二気筒エンジン。1. A pair of cylinders are provided so that their axes are parallel to each other, and two crankshafts are arranged in parallel so as to correspond to the two cylinders and to be orthogonal to a plane (21) including the axes of the two cylinders. Then, in each general-purpose two-cylinder engine in which an intake pipe connected to an air cleaner is connected to each of the cylinders, and an exhaust pipe connected to a muffler is connected to each cylinder, An air cleaner connected to the intake pipe is provided on the outside of one cylinder and on the opposite side of the other cylinder from the plane (2
1) is arranged so as to extend in a direction substantially orthogonal to 1), each exhaust pipe is arranged on the other side of the crankshaft longitudinal direction of each cylinder, and a muffler connected to the exhaust pipe is provided outside the other cylinder. A general-purpose two-cylinder engine, which is arranged at a position opposite to one cylinder so as to extend in a direction substantially orthogonal to the plane (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24377386A JPH0672546B2 (en) | 1986-10-14 | 1986-10-14 | General-purpose two-cylinder engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24377386A JPH0672546B2 (en) | 1986-10-14 | 1986-10-14 | General-purpose two-cylinder engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6397829A JPS6397829A (en) | 1988-04-28 |
| JPH0672546B2 true JPH0672546B2 (en) | 1994-09-14 |
Family
ID=17108758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24377386A Expired - Fee Related JPH0672546B2 (en) | 1986-10-14 | 1986-10-14 | General-purpose two-cylinder engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0672546B2 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2744444B2 (en) * | 1988-10-21 | 1998-04-28 | ヤマハ発動機株式会社 | Engine balancer shaft mounting device |
| KR100292325B1 (en) * | 1998-12-31 | 2001-11-22 | 하태환 | Semi-automatic Transmission for Automobile |
| CH703972A1 (en) * | 2010-10-29 | 2012-04-30 | Obrist Engineering Gmbh | Internal combustion engine. |
| US9103277B1 (en) | 2014-07-03 | 2015-08-11 | Daniel Sexton Gurney | Moment-cancelling 4-stroke engine |
| DE102014215851A1 (en) | 2014-08-11 | 2016-02-11 | Bayerische Motoren Werke Aktiengesellschaft | Reciprocating internal combustion engine |
| DE102016102048B4 (en) * | 2016-02-05 | 2022-02-17 | Obrist Technologies Gmbh | generator |
| DE102018104546B3 (en) * | 2018-02-26 | 2019-06-19 | Obrist Technologies Gmbh | generator |
-
1986
- 1986-10-14 JP JP24377386A patent/JPH0672546B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6397829A (en) | 1988-04-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3485221A (en) | Omnitorque opposed piston engine | |
| JP2003314211A (en) | Variable stroke engine | |
| JP2003343297A (en) | engine | |
| JPH09324652A (en) | V type engine with supercharged crankcase | |
| JP3640416B2 (en) | Intake silencer for vertical engine | |
| JPH0672546B2 (en) | General-purpose two-cylinder engine | |
| JPS63115537U (en) | ||
| JP3271502B2 (en) | V-type 4-cycle engine for outboard motor | |
| JP4321100B2 (en) | Secondary balancer for outboard motor vertical engine | |
| JPH01301909A (en) | Valve system for four-cycle engine | |
| JPH0874598A (en) | Intake and exhaust structure of overhead valve type V multi-cylinder internal combustion engine | |
| US3447515A (en) | Engine gearing arrangement | |
| JPH021459Y2 (en) | ||
| JP2582064B2 (en) | Engine with balancer | |
| JP2662208B2 (en) | 4 cycle engine for outboard motor | |
| JP2003314237A (en) | Engine | |
| JP2544368B2 (en) | Engine with balancer | |
| CN2305491Y (en) | Multipurpose micro gasoline engine | |
| JPH0232830Y2 (en) | ||
| JPS588914Y2 (en) | Horizontally opposed engine with fuel pump | |
| JPH03210019A (en) | Structure of cooling water supply device of cylinder block | |
| JP4048732B2 (en) | Outboard motor intake structure | |
| JP3395187B2 (en) | Balancer device for two-stroke engine | |
| JPH0754607Y2 (en) | Engine suction noise reduction device | |
| JPH07189727A (en) | 4 cycle engine with working hydraulic pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |