JPS5831454B2 - rotary engine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rotary internal combustion engine, and more particularly to a multi-rotor rotary internal combustion engine.

Furthermore, the present invention relates to a liquid cooling system for the multi-rotor engine.

The present invention includes wall devices disposed in mutually spaced apart, parallel and aligned relationship and partially defining first and second trochoid-shaped rotor cavities; and another wall device extending circumferentially of a portion of the cooling jacket and partially defining first and second cooling jackets each including an inlet and an outlet end. The present invention relates to a rotary internal combustion engine (hereinafter referred to as rotary engine) having a housing assembly including a housing member.

The rotary engine further includes a first water jacket disposed adjacent the first housing member on a side remote from the second housing member and further defining a first rotor cavity. a first wall device including a coolant inlet device in communication with the inlet end; and a first wall device disposed adjacent the second housing member on a side remote from the first housing member and partially defining the second rotor cavity. a second wall device disposed between the housing member and partially defining the first and second rotor cavities; and an intermediate member including a coolant conduit arrangement communicating between the outlet end of the first water jacket and the inlet end of the second water jacket.

Additionally, the engine includes a device for securing together the first wall device, the first housing member, the intermediate member, the second housing member, and the second wall device in series.

Further in accordance with the present invention, the rotary engine is characterized in that the housing members are constructed with substantially the same shape and are arranged such that the rotor cavity and the cooling jacket inlet and outlet ends are respectively aligned with each other. is desirable.

Furthermore, according to the invention, the cooling medium conduit arrangement of the intermediate member is arranged at least partially inside the periphery of the rotor cavity and has an arcuate shape at the outlet ends of the first and second cooling jackets. and an arcuately extending third cooling jacket having an inlet end adjacent to the cooling jacket and communicating with the outlet end of the first cooling jacket.

Additionally, an intermediate or third cooling jacket also connects the first and second cooling jackets.
A second cooling jacket is arranged adjacent to the inlet end of the cooling jacket in an arc shape.
an outlet end disposed in communication with an inlet end of the cooling jacket.

Further in accordance with the invention, each housing member and intermediate member is provided with a respective exhaust passageway, the passageways being mutually aligned and in communication with each other, the first. Second and third cooling jackets extend adjacent the exhaust passage for cooling.

Still further in accordance with the invention, the rotary engine includes a wall arrangement in which the first wall member also partially defines a first cooling jacket, and the second wall member defines a second cooling jacket. and the intermediate member is configured to include a wall arrangement further defining further portions of the first and second cooling jackets.

One of the principal features of the present invention is the provision of a multi-rotor rotary engine that includes first and second rotor housing members, each of which extends circumferentially over a portion of the rotor cavity. a cooling jacket in which the cooling medium flows in parallel from the cooling jacket of the first rotor housing part to the cooling jacket of the second rotor housing part; The flow is circumferential in the same direction.

Another feature of the present invention is the provision of a multi-rotor rotary engine that includes a cooling system that allows the use of substantially identically configured rotor housing members.

A further feature of the invention is that the cooling medium is disposed between two rotor housing members in a circumferential direction opposite to the circumferential flow in a cooling jacket provided in the rotary engine housing member. The present invention provides a multi-rotor type rotary engine that includes an intermediate member that includes a water jacket that flows.

Yet another feature of the invention is the provision of a cooling jacket disposed inside a local portion of the rotor cavity in an intermediate member disposed between two rotor housing members.

Yet another feature of the present invention is the provision of a multi-rotor type rotary engine that incorporates a plurality of stacked members that can be manufactured by die casting.

Still another feature of the present invention is the provision of a multi-rotor rotary engine that is economical to manufacture and provides an efficient cooling system.

Other features and aspects of the invention will be apparent from a study of the claims, the following description, and the accompanying drawings.

Shown in the accompanying drawings is a rotary engine 11,
The engine has a housing assembly 13 including first and second or lower and upper housing members 15, 17, each said housing member aligned in a mutually spaced apart parallel position. It includes wall devices defining lower and upper trochoid-shaped rotor cavities 19, 21, respectively.

Since housing members 15, 17 are preferably of the same configuration, only housing member 15 is shown in FIG.

First and second or lower and upper housing members 15
, 17 each extend perpendicularly to the parallel position of the housing member 15, 17 (i.e. parallel to the crankshaft shown below) and are in mutually aligned position at a spaced apart position with respect to the rotor cavities 19, 21. It includes further wall devices defining first and second or lower and upper exhaust passages 23, 25 arranged therein.

First and second or lower and upper housing members 1
5, 17 further include further wall arrangements defining first and second or lower and upper cooling jackets 27, 29, each said jacket having a rotor cavity 19, 2, respectively.
1 in the circumferential direction, preferably an exhaust passage 23.
It extends around at least a portion of the circumference of 25°.

In this regard, the flow of cooling medium within cooling jackets 27, 29 is clockwise from each inlet end 31 to each outlet end 33.

Additionally, the first and second or lower and upper housing members 15, 17 each include further wall devices, said wall devices defining first and second or lower and upper exhaust ducts (not shown). The duct has first and second cavity portions 19 and 21 and first and second exhaust passages 2.
3 and 25 are connected to each other.

Preferably, the housing parts 15, 17 are die-cast, so that the casting part or part has separate lower and upper holes 35, 37, respectively, which holes are connected to exhaust ducts (see Figures) to facilitate casting. (not shown) and are closed off by respective covers or plates 39, 41.

Housing assembly 13 further includes an intermediate member 51 disposed between first and second or lower and upper housing members 15, 17 and having lower and upper surfaces 53, 55.
, each of said surfaces abutting a lower and an upper housing member 15, 17, respectively.

The upper and lower surfaces 53 and 55 are the first and second surfaces, respectively.
a wall device 57 (see FIG. 1) defining further portions of the rotor cavities 19, 21 and a wall device 5 defining further portions of the first and second cooling jackets 27, 29;
9.

Further, the intermediate member 51 also has an exhaust gas in alignment with and in communication with the first and second lower and upper exhaust passages 23,25 of the first and second lower and upper housing members 15,17. It includes a passage 61.

Intermediate member 51 further includes a coolant conduit arrangement communicating between outlet end 33 of lower cooling jacket 27 and inlet end 31 of upper cooling jacket 29.

In the construction of the preferred embodiment, such a cooling medium conduit arrangement is provided in the third cooling jacket 71 shown in FIG.
, the jacket is arranged circumferentially inside the intermediate member 51 in an area substantially inside the periphery of the rotor cavities 19 , 21 and preferably around at least a portion of the exhaust gas passage 61 . Extending.

This third cooling jacket 71 includes an inlet end 73 and an outlet end 75 arcuately spaced therefrom.

In the third cooling jacket 71, the cooling medium flows in a direction opposite to the direction of flow in the cooling jackets 27, 29 in the housing parts 15, 17.

Furthermore, the inlet end 73 of the third cooling jacket 71 is connected to the outlet end 3 of the upper and lower cooling jackets 27, 29.
3 and communicates with the outlet end 33 of the lower cooling jacket 27 via a duct or port 77.

Furthermore, the outlet end 75 of the third cooling jacket 71 is disposed in substantially circumferential alignment with the inlet ends 31 of the upper and lower cooling jackets T-27, 29, and is configured to open the duct or port 79. It communicates with the inlet end 31 of the upper cooling jacket 29 through the upper cooling jacket 29 .

In this way, the lower and upper cooling jackets 27, 29
The inlet end 31 of the third or intermediate cooling jacket 71
The outlet end 33 of the lower and upper cooling jackets 27 , 29 is circumferentially adjacent to the outlet end 75 of the third cooling jacket 71 of the intermediate member 51 .
is adjacent to in the circumferential direction.

As a result of this configuration, the cooling medium that flows in one circumferential direction through the cooling water jacket of the lower housing member exits from the outlet end of the water jacket and then flows in the opposite circumferential direction within the intermediate member to the lower housing member. Because it exits the intermediate member at a portion corresponding to the inlet end of the cooling water jacket of the housing member, the upper housing member receives the cooling medium in exactly the same manner as the lower housing member.

Therefore, it is possible to use exactly the same upper and lower housing members, or substantially the same members with differences in post-processing such as screw holes for attaching other parts, and the production process All or the main parts of the parts can be made common, which makes manufacturing easier and parts management easier.

The housing assembly 13 further includes an upper wall member 81 that is connected to a single section or second housing member 1
7 and spaced apart from the intermediate member 51 and further defining the upper or second rotor cavity 21 and the other portions of the upper or second cooling jacket 29; The upper end of the exhaust passage 25 of the housing member 1γ is closed.

Upper wall member 81 also includes a coolant outlet device in the form of a coolant outlet port or duct 83 that communicates with outlet end 33 of upper cooling jacket 29 .

The exhaust duct 83 can be arranged to discharge into one of the exhaust passages 23, 25 or 61.

Housing assembly 13 further includes a lower wall member 85 that is disposed adjacent lower or first housing member 15 and spaced from intermediate member 51 and that also includes lower or first rotor cavity 19 . and a further portion of the lower or first cooling jacket 27.

The lower wall member 85 further includes an outlet portion aligned with and in communication with the exhaust passageway 23 of the lower or first housing member 15 for connection to an exhaust pipe or conduit extending from the housing assembly 13 in a suitable manner. It includes an exhaust passage 87 having an exhaust passage.

Additionally, the lower wall member 85 includes a coolant inlet arrangement in the form of a port or duct 89 that communicates with the inlet end 31 of the lower cooling jacket 27.

Inlet duct or port 89 may communicate with any source of cooling medium.

Upper and lower wall members 81, 85 also support upper and lower bearings 91, 93 which serve to rotatably support a crankshaft 95, said crankshaft being connected to first and second or lower and upper rotor cavities. 19
. The rotor defines combustion chambers that rotate within first and second or lower and upper rotor cavities 19.21 in response to its rotation.

Mounted on crankshaft 95 is flywheel 101.

The lower and upper gear systems 103, 105 are provided on the housing assembly 13 and the rotors 97, 99, and are connected between the rotors 97, 99 and the housing assembly 13, and between the rotors 97, 99 and the crankshaft as combustion occurs in the rotating chamber. 95 to produce a relative rotation between the two.

The above-mentioned upper and lower wall members 81 and 85, lower and upper housing members 15 and 17, and intermediate member 51 are aligned so that the exhaust passages 23, 25 and 61 degrees 87 are aligned, and the rotor cavities 19 and 21 are aligned. Suitable devices are provided for arranging them in relation and securing them together in a stacked condition.

In the illustrated construction, members 15, 17 of such a device
, 51° 81 and 85, respectively.

In operation, water flows clockwise around the lower rotor cavity 19 toward the outlet end 33 of the lower cooling jacket 27 as shown in FIG. The inlet end 31 of the jacket 27 is fed.

From the outlet end 33 of the lower cooling jacket 27, the cooling medium flows through the duct 17 of the intermediate member 51 to the inlet end 73 of the intermediate or third cooling jacket 71.

Inside the intermediate or third cooling jacket 71, the flow of refrigerant is directed counterclockwise from the inlet end 73 to the outlet end γ inside the periphery of the rotor cavities 19, 21, as shown in FIG.
Head to 5.

From the outlet end 75 of the intermediate or third cooling jacket 11, the refrigerant is directed from a duct or port 79 to the inlet end 31 of the upper cooling jacket 29 and then clockwise circumferentially in the upper rotor cavity 21. towards the outlet end 33 from where it exits via port 83.

The configuration disclosed herein therefore allows the use of completely identical housing parts 15, 17, while providing sufficient space for the housing parts 15, 17, and in particular for the intermediate member 51 arranged between these housing parts 15, 17. It has the advantage of providing cooling.

In this way, the rotor cavity and internal exhaust passages 23, 2
5 and 61 are cooled.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway side view of a multi-rotor type rotary engine according to the present invention, FIG. 2 is a sectional view taken along line 2--2 in FIG. 1, and FIG. 3 is a sectional view taken along line 3-- in FIG. 1. 3 is a sectional view of FIG. 11...Rotary engine, 13...
Housing assembly, 15, 17... Housing member, 19° 21... Rotor cavity, 23, 25
...Exhaust passage, 27.29...Cooling jacket, 31...Inlet end, 33...
...Outlet end, 51...Intermediate member, 61...
...Exhaust passage, γ1...Cooling jacket,
73...Inlet end, 75...Outlet end, 77°79...Duct (port), 81,8
5... Wall member, 83... Duct (port), 87... Exhaust passage, 89...
Duct (port), 95... Crankshaft, 97, 99... Rotor, 109...
bolt.

Claims (1)

Claims: (1) including wall devices spaced parallel to each other and placed in aligned relationship, each defining a first and second partially trochoid-shaped rotor cavity; a first extending partially circumferentially of the first and second cavities and including circumferentially spaced inlet and outlet ends, respectively;
and a first and second substantially identically shaped wall device that also includes another wall device that partially defines a second water jacket.
a housing member; a wall device disposed adjacent to the first housing member and remote from the second housing member and further defining another portion of the first rotor cavity; a first wall member also including a cooling medium inlet device in communication with the inlet end of the first water jacket; a first wall member disposed adjacent to the second housing member and remote from the first housing member; a second wall member including a wall device provided and defining a further portion of the second rotor cavity and also including an outlet device in communication with the outlet end of the second water jacket; the first housing member disposed between the first and second housing members;
and a wall device defining a further portion of the second rotor cavity, and a third circumferentially extending water jacket, the water jacket having circumferentially spaced inlets and outlets. and an inlet end of the third water jacket is connected to an outlet end of the first water jacket, an outlet end of the third water jacket is connected to an inlet end of the second water jacket, and a third water jacket is connected to the inlet end of the third water jacket. An intermediate member configured to allow cooling water to flow in the jacket in a direction opposite to that in the first water jacket.