FIELD: engines and pumps.
SUBSTANCE: proposed ICE comprises at least one exhaust valve to force off gases from at least one combustion chamber and engine decelerator with valve hydraulic-control device to keep exhaust valve in intermediate open position with engine decelerator engaged. Besides, ICE comprises hydraulic mechanism designed to adjust exhaust valve clearance and oil duct to feed oil into extra valve hydraulic control mechanism arranged between said mechanism and valve clearance adjustment mechanism. Said valve hydraulic control mechanism may be locked by locking device in adjusting exhaust valve clearance.
EFFECT: reliable and safe operation.
12 cl, 7 dwg
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