INTERNAL COMBUSTION ENGINE WITH SPARK IGNITION Russian patent published in 2011 - IPC F02D41/04 F02D15/00 F02D13/02 F02D9/02 

FIELD: engines and pumps.

SUBSTANCE: internal combustion engine (ICE) with spark ignition includes variable compression degree mechanism and mechanism for adjustment of gas distribution phases. Variable compression degree mechanism has the possibility of changing mechanical compression degree. Gas distribution phase control mechanism has the possibility of controlling the inlet valve closing moment. Mechanical compression degree in working range of low load, excluding idle operation, is more than during the operation at high load. Mechanical compression degree during idle operation becomes lower than for working range of low load. When engine operation is switched over to idle mode, mechanical compression degree can be decreased gradually.

EFFECT: reducing vibration and noise caused by the engine during idle operation.

9 cl, 13 dwg