INTERNAL COMBUSTION ENGINE WITH VARIABLE COMPRESSION CHAMBER VOLUME Russian patent published in 1996 - IPC

FIELD: engine engineering. SUBSTANCE: engine has cylinder 1, working piston 2 mounted inside the cylinder, and adjusting piston 5 with fixing screw 6. Triangle recess 7 is made in the inner surface of cylinder 1. Corrugated spring 4 is secured at the top of the recess over the outer periphery. The inner periphery of the spring is secured with adjusting piston 5. Piston 5 is provided with a dummy threaded opening for receiving the end of fixing screw 6. The screw is provided with an arrester of movements. The spring height is equal to the height of corrugations that is increased in the direction to piston 5. EFFECT: enhanced efficiency. 3 dwg