INTERNAL COMBUSTION ENGINE WITH SPARK IGNITION Russian patent published in 2012 - IPC F02D41/04 F02D15/00 F02D13/02 F02D9/02 

FIELD: engines and pumps.

SUBSTANCE: proposed engine comprises variable compression ratio mechanism, variable phase distribution setter, and restrictor. With engine load decreasing, compression ratio increases to its maximum kept thereat in load zone lower than that of engine. Note here that intake valve closing setting displaces from BDC to maximum closing setting. With closing setting reaching maximum values, engine load is lower that load at which compression ratio reaches its maximum. Simultaneously, actual compression ratio downs gradually compared with engine high-load operation time. With intake valve closing setting reaches its maximum, amount of air intake is controlled by restrictor in the range of loads lower than that of engine whereat intake valve closing setting reaches its maximum. At loads lower the engine load when intake valves closing setting reaches its maximum, restrictor may be retained in completely open position.

EFFECT: permanent stable ignition.

3 cl, 12 dwg