Internal combustion engine with pistons that rotate about a cent

Details Internal combustion engine with pistons that rotate about a cent Internal combustion engine with pistons that rotate about a cent

1996-01-24

1998-03-03

Koczo, Michael

Internal-combustion engines

Rotary

With fuel injection means

123245, F02B 5310

Patent

active

057223610

DESCRIPTION:

BRIEF SUMMARY
FIELD OF THE INVENTION

The invention relates to an internal combustion engine with pistons that rotate about a center line, having a circular-cylindrical rotor housing closed off by a housing lid on the drive side and on the drive opposing side, an outer rotor rotating with a constant speed in the rotor housing about its center axis, and carrying a rotor side disk on the drive side and on the drive opposing side, and an inner rotor rotating with an irregular speed inside of the outer rotor about the center axis, whereby the outer rotor has several radially inwardly pointing pistons rigidly connected with one another and the inner rotor has opposed a corresponding number of radially outwardly pointing pistons rigidly connected with one another engaging between two pistons of the outer rotor defining thereby each two working chambers, and whereby a combustion chamber is associated with each working chamber, and each combustion chamber communicates alternately through a control window with stationary inlet and outlet openings.


BACKGROUND AND SUMMARY OF THE INVENTION

In a conventional internal combustion engine of this type (EP-B-0 035 136) the stationary inlet and outlet openings are arranged spaced from one another in the peripheral direction in the sleeve of the circular-cylindrical rotor housing, whereas the control windows are arranged in the axial center area of the outer rotor evenly distributed over its periphery and are designed as radially inwardly tapered recesses arranged symmetrically with respect to the axial center plane of the pistons. These recesses transfer into trough-shaped combustion chambers defined by edge-open recesses in the pistons. Tests with internal combustion engines of this type resulted often in different performances from one motor to another motor and consumptions of force was probably due to changing frictional and sealing behavior of the sealing rings engaging the cylinder path. Furthermore, the absolutely necessary arrangement of a seal between the control windows of the rotor side disk for sealing off the outlet and inlet openings against the oil chamber and against one another is very complicated and expensive with respect to the machining because of the cylindrical surface. Furthermore, the exhaust and suction pipes sitting on the periphery of the rotor housing result in a relatively large front surface of the motor.
Starting out from this the basic purpose of the invention is to develop a rotary piston internal combustion engine, which enables an improved high-pressure operation with little friction and load losses, a more efficient sealing system with improved manufacturing efficiency, and results in a reduction of the engine front surface.
To attain this purpose the characteristics disclosed in Patent claim 1 are suggested. Further advantageous embodiments and developments of the invention result from the subclaims.
The invention is based on the thinking that with a simplification of the contact surfaces to be sealed against one another between rotor and housing, through the use of the sealing system in a flat surface, a higher reliability in the high-pressure operation can be achieved. In order to accomplish this, the invention suggests that the stationary inlet and outlet openings are arranged spacially from one another on a theoretical inscribed circle of one of the housing lids and the control windows in the rotor side disk facing the respective housing lid, and that the combustion chambers are formed by recesses in the outer rotor pistons, which recesses are open axially in direction of the control windows and communicate transversely thereto with the adjacent working chambers.
A preferred embodiment of the invention provides that the inlet and outlet openings are arranged in the housing lid on the drive opposing side and the control windows are arranged in the rotor side disk on the drive opposing side. This measure creates sufficient space for storing the aggregates effecting the charge exchange and, if necessary, the ignition. A further improvement in this

REFERENCES:
patent: 988319 (1911-04-01), Edqvist
patent: 1536245 (1925-02-01), Thelin
patent: 3973526 (1976-08-01), Kokochak

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