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 compression degree control mechanism, gas distribution phase control mechanism and throttle valve. When load on ICE becomes lower, the closing moment of inlet valve is shifted aside from lower dead point of suction stroke, and mechanical compression degree increases to maximum. At engine operation in range of loads that are lower than engine load at which mechanical compression degree becomes maximum, mechanical compression degree is maintained as maximum load, and actual compression degree decreases. On engine operation side with high load the mechanical compression degree decreases gradually when the load increases. When engine load becomes lower, inlet valve is shifted from lower dead point of inlet stroke. When engine load decreases on engine operation side with low load, actual compression degree decreases; at that, throttle gate closes.

EFFECT: providing favourable conditions for fuel ignition and combustion and improving thermal effectiveness.

5 cl, 11 dwg