CN1130716A

CN1130716A - Elliptical piston rotary engine

Info

Publication number: CN1130716A
Application number: CN95111262A
Authority: CN
Inventors: 王立涛
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-03-07
Filing date: 1995-03-07
Publication date: 1996-09-11

Abstract

A rotary engine comprises two oval piston mechanisms, one for admission and compression strokes and another for doing work and discharge strokes. Compressed combustible mixed gas is transmitted to work-doing working cavity for doing work by expansion. It features four work-doing strokes per revolution of main shaft, simple structure, high compression rate, smooth running and better torque characteristics.

Description

Elliptical piston rotary engine

The present invention relates to a kind of rotary engine that constitutes by 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 special device system speed; 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 invention just provides a kind of performance than the better novel rotary engine of available engine.

Its air inlet of elliptical piston rotary engine of the present invention, compression process and work done, exhaust process are seen in fact by two oval piston mechanisms respectively, can form the active chamber of four volume-variation during this oval piston mechanism kinematic, the rule of its volume-variation meets the requirement of quartastroke engine, and the present invention utilizes this characteristics design of this mechanism to go out novel rotary engine just

Below in conjunction with accompanying drawing the present invention is described in further detail.

Accompanying drawing 1 is the structural representation of elliptical piston rotary engine of the present invention, also is one embodiment of the present invention.It is that oval piston mechanism by two structural similarities realizes air inlet, compression process and work done, exhaust process respectively, the A-A sectional view is the inlet air compressor structure in the accompanying drawing 1, the B-B sectional view is the work done exhaust gear, oval piston in two mechanisms (3) and oval synchronizing ring (5) are fixed on the main shaft (6), and differ an angle [alpha], cylinder (1), cylinder cap (2) and intermediate hsg (7) are fixed block, and traverse (4) is housed on the cylinder (1), and traverse (4) can be done radially to-and-fro motion.

Two tops of oval piston (3) and cylinder (1) inwall are closely by touching, traverse (4) its top under the effect of oval synchronizing ring (5) closely contacts with oval piston (3) surface, has formed four kinds of totally 8 active chambers like this: air-inlet cavity (11), compression chamber (12), work done cavity (13), exhaust cavity (14).Main shaft (6) rotates and will drive oval piston (3) and oval synchronizing ring (5) rotation, and each working chamber volume changes thereupon, and the rule of its variation conforms to the requirement that volume of cylinder changes with quartastroke engine.The pressure of explosion of gas promotes main shaft (6) rotation by the oval piston in the work done exhaust gear (3) during engine operation.

The working principle of elliptical piston rotary engine, when main shaft (6) rotated, in the inlet air compressor structure, inlet hole (9) place air-inlet cavity (11) volume increased gradually, and combination gas is constantly sucked, and realizes intake process; And compression chamber (12) volume reduces gradually, combination gas is constantly compressed, see accompanying drawing 2, this is compression chamber (12) and the partial enlarged drawing of work done cavity (13) when pressurized gas through hole open mode, when the oval piston in the work done exhaust gear (3) summit forwards the N point to, the pressurized gas through hole (8) that is blocked by traverse (4) in two mechanisms is opened, pressurized gas in the compression chamber (12) is discharged in the work done cavity (13), when the oval piston in the inlet air compressor structure (3) summit forwards the M point to, pressurized gas is several to be discharged in the work done cavity (13) air inlet entirely, compression process finishes; With pressurized gas through hole (8) sealing, mixed gas is lighted in spark plug (15) arcing to the traverse (4) of work done this moment mechanism again, beginning expansion working process; Meanwhile exhaust port (10) place exhaust cavity (14) is discharged waste gas, realizes exhaust process.When the oval piston in the work done exhaust gear (3) forwarded its summit to and overlaps with the summit of two traverses (4), work done, exhaust process finished.Each active chamber of engine spindle (6) revolution half-turn can be finished the four-stroke work cycle one time, owing to have the identical work of two covers to take off, so motor whenever turns around and can carry out four four-stroke work cycle.

Elliptical piston rotary engine of the present invention (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 mechanisms, to carry out respectively, the raising of compression ratio is very simple, as long as strengthen the difference in volume of the active chamber of two mechanisms, so just can use diesel oil and the demanding fuel of compression ratio; 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.

Another embodiment of the present invention is with oval piston (3) and oval synchronizing ring (5) part that fixes, and cylinder (1), cylinder cap (2) and intermediate hsg (7) are rotated, and miscellaneous part is also done corresponding change and 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 present invention also can oval synchronizing ring (5), does radially to-and-fro motion and adopt spring assembly or other devices to control traverse (4).

Implement relevant explanation of the present invention.

The eccentricity of its interior elliptic surface of the oval synchronizing ring (5) among the present invention should equate with the eccentricity of oval piston (3), could guarantee tight all the time contact ellipse piston (3) surface, top of traverse (4) like this.

The α differential seat angle that two oval pistons (3) are installed among the present invention 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) in two mechanisms be equipped with a α differential seat angle, and two oval pistons (3) coordination is installed.

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

Claims

1. the rotary engine of being made up of oval piston mechanism is characterized in that air inlet, compression process and work done, exhaust process carry out respectively in two oval piston mechanisms; Two oval piston mechanisms are made of cylinder (1), cylinder cap (2), oval piston (3), traverse (4), oval synchronizing ring (5) and middle all cylinder caps (7), oval piston (3) in the same oval piston mechanism should be identical with its oval eccentricity of oval synchronizing ring (5), and coordination is installed on the main shaft (6), and the oval piston (3) in the two oval piston mechanisms differs the α angle and is fixed on the main shaft (6) in the position on the circumference; With cylinder (1), cylinder cap (2) and intermediate hsg (7) part that fixes, oval piston (3) and oval synchronizing ring (5) are rotated with main shaft (6), traverse (4) is limited in doing on the cylinder radially to-and-fro motion, the tight contact ellipse piston of one end (3) surface, two tops of oval piston (3) closely contact with cylinder inner wall again, constitute the active chamber of eight volume-variation like this; Therein in oval piston mechanism, intake process becomes two big active chambers at volume and carries out, compression process is carried out at two active chambers that volume diminishes, in another oval piston mechanism, the work done process becomes two big active chambers at volume and carries out, and exhaust process is carried out at two active chambers that volume diminishes; The compressed gas that the compression work chamber produces is arranged into work done active chamber by pressurized gas through hole (8), and the switching of pressurized gas through hole (8) is by the positioning control of traverse (4).

2. it is characterized in that according to claims 1 described rotary engine oval piston mechanism takes oval piston (3) and oval synchronizing ring (5) to fix the mode that cylinder (1), cylinder cap (2) and intermediate hsg (7) rotate.

3. according to claims 1,2 described rotary engines, it is characterized in that oval piston mechanism need not oval synchronizing ring (5), do radially to-and-fro motion and adopt other devices to control traverse (4), as spring assembly, hydraulic pressure or pneumatic shuttle etc.

4. according to claims 1,2,3 described rotary engines, it is characterized in that the traverse (4) in the two oval piston mechanisms differs α angle layout on circumference, and smart circular piston (3) and oval synchronizing ring (5) coordination on circumference is settled.

5. be used for the compressor series products according to the described oval piston of claims 1,2,3 mechanism.

6. be used for the pump series products according to the described oval piston of claims 1,2,3 mechanism.