DE2420296A1 - Supercharged rotary piston engine - with continuous ignition, power stroke lasting through 300o, and some turbine-like characteristics - Google Patents

Abstract

Supercharged rotary engine comprises several rotor housings each having a rotor and valve which counter rotate with equal angular velocity and which both have interengaging U-shaped cross-sectional profiles at their edges. A centring sealing ring is shaped to match the outer cross-section of the rotor. Torque remains constant through 300 deg. giving the engine a turbine-like characteristics. Any fuel may be used. The diagram also shows cooling water channel, rotary slide, and piston acting as drive shaft.

Description

Circular chamber supercharger engine with turbine characteristic rotary piston engines are known. In addition to all the advantages, however, they have disadvantages. In addition to constructive and manufacturing difficulties are added that the achievable torque because of the limited eccentricity of the rotor is relatively small and that the torque because of the variable lever arm at an assumed mean gas pressure during of the work cycle varies from zero to maximum to zero.

The angle of rotation of the work cycle is also based on the full revolution the output shaft only about 1/4.

The present "supercharger motor" does not have these disadvantages without that other difficulties would have to be accepted.

Description: From the sketches or drawings: 111 system 112 Radial section III3 Axial section and top view (inlet side) are working method and the functional parts of the working unit can be seen.

The machine basically consists of two units: A) The compressor, with the pressure accumulator.

The compressor can be of any design. One is preferred Elliptical ring compressor with stepless control.

Working pressure r "lo atü.

B) The working part (circular chamber shells).

The motor consists of the following functional parts per shell: Oil housing ring with cooling water groove Chamber head Chamber lock Rotary slide centering u. Sealing ring 'O6 wheel rotor with to web (tooth) piston.

The working method is easy to understand and shown in sketch II.

The circular chamber is between the chamber lock O and the piston o educated.

If the speed of the working shaft (spider piston) is n, then it rotates the chamber lock also with n, but in the opposite direction of rotation. (Gear coupling).

The rotary valve 04 moves with n 2 in the position a is over the rotary valve compressed air and - injected with controlled delay fuel or injected. The air-fuel ratio is chosen so that a rich - and willing - mixture arises.

Ignition takes place in position b.

It should be noted here that the ignition moment is determined by the position alone of the piston rod can take place (glow plug continuous ignition). In a certain angular position compared to the ignition point - when the gas pressure in the combustion chamber is already reduced Air is blown in through a hole in the housing ring, whereby through the piston position once air enters the combustion chamber and then enters the exhaust (stratified charge - post-combustion).

In position d, the gases are dragged out.

One can speak of a single-stroke engine here.

The working angle is about 3ovo0.

The working volume (stroke volume) per shell is thus determined as: V = 5 L3oo031t.d. Fk 6 where d = diameter of the wheel rotor Fk = area of the piston rod is.

The torque is: Md = F. pmi. d = const.

k 2 As can be seen from drawings II and 113, each shell is an identical component in itself. The individual shells are by means of the centering ring Q5 can be coupled together. The wheel runners sit - not axially fixed - on one common shaft.

Edge seals are created by the design of the wheel runners and the centering rings avoided.

The motor can be 3, 6; 9, 12 are made of shells.

To list a series of services, it is sufficient to have a single one Manufacture tray type and from this to determine the performance range by assembly (Modular system).

The housing can be cooled by water.

(Cooling groove la). It should be noted that even if the cooling water freezes, In the present version, the engine cannot be damaged.

The rotor is cooled and lubricated by oil.

The chamber lock O rotates in the opposite direction with the same angular speed as the wheel runner but with different peripheral speed (Slip).

Both directions of movement are directed against the force of the material.

(favorable sealing conditions).

At no moment in the work process does a suction state (vacuum) arise.

The compressed air can therefore be passed through a heat exchanger (exhaust gas utilization) be heated.

Turbine character: The engine works with a mass unbalance of Zero, as there are no oscillating masses in motion.

One work cycle takes place per revolution of the output shaft and per shell, which extends over an angle of rotation of v 300.

The combustion mixture can be ignited continuously (e.g. glow plug) take place.

As with the turbine, the compressed air can be in the heat exchanger (Exhaust gas recycling) are heated (no suction line).

The engine - like the turbine - has no dead center, the combustion always takes place in the sense of the direction of rotation of the piston (impeller).

The use of knock-free fuels is not required.

The engine can be operated with any fuel, e.g. diesel oil, it is also suitable as a steam engine with a closed circuit.

Claims (1)

Expectations: "Circular chamber supercharger engine with turbine character" characterized in that that to the desired compression or filling pressure pre-compressed air via a Rotary valve is blown into the working space (circular chamber), this compressed air Heated to the desired temperature via a heat exchanger (exhaust gas recycling) can be that the fuel injection at an optimal time in the The air is blown in and the fuel mixture is rich in the injection phase (ignitable) and after a certain angle of rotation additional air into the work area (Circular chamber), the ignition (glow plug) takes place continuously, ignition timing and additional air can be injected solely from the position of the piston rod, based on one revolution of the output shaft, one working cycle per revolution of the circular chamber takes place, this work cycle includes an angle of rotation of about 300 degrees. "Circular chamber loader engine" characterized in that the engine is off consists of a plurality (theoretically unlimited) of shells, each shell for represents a uniform component in a standard version of the shell the performance types can be determined solely by the number of shells that single shell made of a housing ring, the chamber head, the chamber lock, the rotary valve, the centering sealing ring and the runner, the runner as a single-tooth (bar piston) Wheel rotor is formed, the rotor ring (inner profile) U-shaped cross-section has, the chamber lock that dips into the runner profile is also U-shaped Has cross-section and is designed as a "Einlückenrad", rotor and chamber lock move in opposite directions at the same angular velocity, the emerging Slip (different peripheral speed) in the design of the gap constructively is taken into account by the design of the centering sealing ring (circular arc) and of the outer cross-section of the rotor adapted to it, a significant simplification of the Sealing problem is reached, the torque curve - at approx. Medium pressure - Remains constant over 300 degrees and that - in the multi-shell design, turbine character is achieved, fuels of any kind can be used (exhaust gases) and that the exhaust gases are not pushed out, but dragged out (soundproofing).