CN2244100Y

CN2244100Y - Elliptic piston rotary engine

Info

Publication number: CN2244100Y
Application number: CN 95242836
Authority: CN
Inventors: 王立涛
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-03-07
Filing date: 1995-03-07
Publication date: 1997-01-01
Anticipated expiration: 2005-03-07

Abstract

The utility model relates to a novel rotary engine with elliptical pistons, which is mainly composed of elliptical piston mechanisms, wherein, each elliptical piston mechanism is respectively composed of a cylinder body, an elliptical piston, a sliding partition plate, a cylinder head and an elliptical synchronous ring. The movement of the elliptical piston mechanisms can form four working chambers (1) of which the volumes are variable, two such mechanisms are respectively used for completing intake charge, compression process, power and exhaust process. Thereby, the utility model satisfies the requirements of a four-stroke engine. The rotary engine with elliptical pistons, which turns one circle, can carry out four-stroke work cycle for four times, and the utility model is corresponding to the traditional eight-cylinder engine. The rotary engine with elliptical pistons is provided with a normally opened air inlet valve and a normally opened exhaust valve and has the advantages of symmetric structure, no bent shaft and no need of an air mechanism.

Description

Elliptical piston rotary engine

The utility model relates to a kind of rotary engine that is made of oval piston mechanism.

In the present prior art, motor mostly is reciprocating piston type greatly.The essence defective of conventional engine is to exist many reciprocating mass, as piston assembly and valve mechanism etc., when further improving engine speed, the inertial force that reciprocating mass produces will sharply increase, bearing load is significantly increased, the vibration aggravation.This becomes the serious hindrance of motor to high speed development.Though and comparatively ripe at present wankel engine has many advantages good than reciprocating-piston engine, but still there are some shortcomings like this: need the special device manufacturing; Low speed and fuel economy are relatively poor; Can not combustion diesel fuel and other fuel etc.Thereby do not obtain widely-used yet.

Task of the present utility model just provides a kind of performance than the better novel rotary engine of available engine.

Elliptical piston rotary engine of the present utility model mainly is to be made of two cylinder block, two oval pistons, two oval synchronizing ring, four traverses, two cylinder caps, intermediate hsg and main shaft.The both ends of the surface of cylinder block are by cylinder cap and intermediate hsg sealing, cylinder block, cylinder cap and intermediate hsg are fixed blocks, in each cylinder oval piston are housed, and the oval piston two ends closely contact with the cylinder block inwall, two oval pistons are fixed on the main shaft, and its position on circumference differs the α angle.Two oval synchronizing ring are separately fixed on the outer main shaft of cylinder cap, install with relative separately oval piston coordination.Main shaft is supported by the bearing on the cylinder cap.Radial symmetric is inserted two traverses on two cylinder block, the traverse two ends respectively with oval piston surface and oval synchronizing ring in profile closely contact formation four active chambers (except when the oval piston top contacts with the traverse top) in cylinder like this.Main shaft rotates will drive oval piston, oval synchronizing ring is rotated together, traverse will be limited to do radially to-and-fro motion, the volume of four active chambers is along with changing, wherein must there be two working chamber volumes to become big, two working chamber volumes diminish, become two big active chambers with a cylinder internal volume and finish intake process, finish compression process with the active chamber that other two volumes diminish, become two big active chambers with volume in another cylinder again and carry out the work done process, the active chamber that diminishes with all the other two volumes carries out exhaust process, and the required compressed gas of work done active chamber is supplied with by the compression work chamber.Be that with the difference of conventional engines four strokes carry out respectively in two cylinders.When elliptical piston rotary engine was worked, the explosion pressure of gas drove main axis rotation by oval piston.

Elliptical piston rotary engine of the present utility model (hereinafter to be referred as this machine) not only has whole advantages of wankel engine, and its exclusive advantage is arranged: because the mode that has adopted air inlet, compression process and work done, exhaust process in two cylinders, to carry out respectively, the raising of compression ratio is very simple, as long as strengthen the difference in volume of two cylinders, so just can use diesel oil and the demanding fuel of compression ratio; This machine need not valve mechanism, and the inlet and outlet mouth is often opened; The torque characteristics of this machine is fabulous, when gaseous-pressure is maximum acting force arm also near maximum, and in the whole work done process, arm of force perseverance greater than

A, b are respectively the long and short axle of oval piston; This machine does not have bent axle, is full symmetrical configuration, and each shaft strength in order; The manufacturing of this machine is simple, need not special device; This machine stable working, main shaft four expansion space strokes that whenever circled are equivalent to one eight cylinder reciprocating motor.

Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.

Fig. 1 is the structural representation of the utility model elliptical piston rotary engine, and Fig. 2 is the sectional view at Figure 1A-A place, and Fig. 3 is the sectional view at Figure 1B-B place.

This machine mainly is made up of two groups of similar part cylinder block (1) (20), oval piston (3) (17), oval synchronizing ring (5) (19), traverse (4) (18), cylinder cap (2) (16) and main shaft (6), intermediate hsgs (7).Form two oval piston mechanisms respectively by these parts, promptly Fig. 2 is shown in Figure 3, and its effect is to replace connecting rod.Its structure is that oval piston is installed in the cylinder block, the oval piston two ends closely contact with cylinder inner wall, radial symmetric is inserted two traverses on the cylinder wall, the traverse two ends respectively with oval piston surface and oval synchronizing ring in profile closely contact, the cylinder two ends are by cylinder cap and intermediate hsg (7) sealing, in cylinder block, form four independently active chambers like this, oval piston and oval synchronizing ring are fixed on the main shaft (6), cylinder block, cylinder cap and intermediate hsg (7) part that fixes, main shaft (6) is supported by the bearing on the cylinder cap (21), main shaft (6) rotates will be with oval piston and oval synchronizing ring to rotate together, traverse is limited to do radially to-and-fro motion, and four working chamber volumes also will be along with change in the cylinder block.In order to utilize oval piston mechanism, on cylinder block (1), have two inlet holes (9), on cylinder block (20), have two exhaust ports (10), and be equipped with two spark plugs (15), on intermediate hsg, have two pressurized gas through holes (8), and oval piston (3) and oval piston (17) are differed the installation of α angle on the circumference of main shaft (6).

The working principle of elliptical piston rotary engine for understanding conveniently, begins to narrate from the some time between engine operation, sees Fig. 2, Fig. 3, establishes main shaft (6) and turns clockwise, and it is big that active chamber (11) volume becomes.Inflammable mixture sucks from inlet hole (9), carries out breathing process; Active chamber (12) volume diminishes, and inflammable mixture is compressed, and carries out compression process; It is big that active chamber (13) volume becomes, the work done process of exploding; Active chamber (14) volume diminishes, and waste gas is discharged from exhaust port (10), carries out exhaust process.When main shaft (6) turns to oval piston (17) top and traverse (18) when the top contacts, the exhaust process of the work done process of active chamber (13) and active chamber (14) finishes.Fig. 4, partial enlarged drawing when Fig. 5 is pressurized gas through hole (8) unlatching, when main shaft (6) turns to oval piston (17) top when turning over the N point, by traverse (4), (18) Feng Bi pressurized gas through hole (8) is opened, the pressurized gas of active chamber (12) is discharged into active chamber (13), when the top of oval piston (3) turns over the M point, pressurized gas through hole (8) is closed, this moment, compression process finished, spark plug (15) arcing active chamber (13) begins the work done process of exploding again, active chamber (14) is carrying out exhaust process again simultaneously, when the top of oval piston (3) contacted with the top of traverse (4), the intake process of active chamber (11) finished.This shows that almost all carry out respectively in four working strokes of each moment motor, main shaft (6) whenever circles and can finish four four-stroke work cycle in different active chambers.

Another embodiment of the present utility model is with oval piston (3) (17) and oval synchronizing ring (5) (19) part that fixes, and cylinder (1) (20), cylinder cap (2) (16) and intermediate hsg (7) are rotated, miscellaneous part is also done corresponding change and is got final product, and does not elaborate here.The advantage of this scheme is the volume that can reduce motor, helps adopting air cooling way.

The utility model also can oval synchronizing ring (5) (19), does radially to-and-fro motion and adopt spring assembly or other devices to control traverse (4) (18).

Implement relevant explanation of the present utility model.

The profile curve is to form like this in the oval synchronizing ring in the utility model: by the line of the arbitrfary point and the oval heart on the ellipse that forms an oval piston constant (being traverse length) the institute invocation point formation that stretches out, this is a sub-elliptical line.Could guarantee the tight all the time contact ellipse piston face in top of traverse like this.

The α differential seat angle that two oval pistons (3) (17) are installed in the utility model is relevant with the compression ratio of design, and the big more α of compression ratio angle should be more little.Also can make the installation position of the traverse (4) (18) in the two oval piston mechanisms be equipped with a α differential seat angle, and two oval pistons (3) (17) coordination is installed.

Sealing of the present utility model, lubricated, cooling scheme can adopt and the wankel engine similar forms.

Claims

1. an elliptical piston rotary engine mainly is made up of cylinder block (1) (20), oval piston (3) (17), oval synchronizing ring (5) (19), traverse (4) (18), cylinder cap (2) (16) and main shaft (6), intermediate hsg (7); It is characterized in that installing in the cylinder block oval piston, the oval piston two ends closely contact with cylinder inner wall, radial symmetric is inserted two traverses on the cylinder wall, the traverse two ends respectively with oval piston surface and oval synchronizing ring in profile closely contact, the cylinder two ends are by cylinder cap and intermediate hsg (7) sealing, in cylinder block, form four independently active chambers like this, oval piston and oval synchronizing ring are fixed on the main shaft (6), cylinder block, cylinder cap and intermediate hsg (7) part that fixes, main shaft (6) is supported by the bearing on the cylinder cap (21), main shaft (6) rotates will be with oval piston and oval synchronizing ring to rotate together, traverse is limited to do radially to-and-fro motion, and four working chamber volumes also will be along with change in the cylinder block; On cylinder block (1), have two inlet holes (9), on cylinder block (20), have two exhaust ports (10), and be equipped with two spark plugs (15), and on intermediate hsg, having two pressurized gas through holes (8), oval piston (3) and oval piston (17) differ the α angle and install on the circumference of main shaft (6); Finish air inlet and compression process respectively with active chamber (11) (12) in the cylinder block (1), to produce pressurized gas, the compressed gas that active chamber (12) produces enters active chamber (13) by pressurized gas through hole (8), the switching of pressurized gas through hole (8) is by the positioning control of traverse (4) (18), or with the control of device such as other modes such as one-way valve, finish work done and exhaust process respectively with active chamber (13) (14) in the cylinder block (20), the interior gas explosion of active chamber (13) promotes oval piston (17) and rotates, and externally exports torque by main shaft (6).

2. according to claims 1 described rotary engine, it is characterized in that taking oval piston and oval synchronizing ring to fix, the mode that cylinder block, cylinder cap and intermediate hsg rotate.

3. according to claims 1,2 described rotary engines, it is characterized in that need not oval synchronizing ring, does radially to-and-fro motion and adopt other devices to control traverse, as spring assembly, hydraulic pressure or pneumatic shuttle etc.