FIELD: engines and pumps.
SUBSTANCE: proposed engine comprises compression ratio control mechanism (A) designed to vary compression ratio. Besides, it comprises valve timing control mechanism (B) designed to vary intake valve closing moment wherein preset is the inhibited zone for combination of mechanical compression and intake valve (7) closing moment to inhibit getting of working point in inhibited zone. Said working point represents a combination of mechanical compression degree and intake valve (7) closing moment. Said of mechanical compression degree and intake valve (7) closing moment can vary from current working point in direction towards required one on the side of lower mechanical compression degree without getting in inhibited zone when compression mechanism fails.
EFFECT: required combustion at lower compression ratio at failure of compression control mechanism.
11 cl, 57 dwg
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