| 摘要 |
FIELD: engines and pumps. ^ SUBSTANCE: proposed valve gear comprises exhaust valves with stems and heads interacting with valve seats arranged in cylinder cover bottoms. Seats have channels that communicate via ""-shaped channels made in cover bottom with spaces formed by seat face part and cylinder cover bottom. Said spaces communicate via throttle channels in cover bottoms with inner space of exhaust manifold. Seats in cover bottom can move therein, while throttle channel diametre is smaller than that of ""-shape channels and channels in aforesaid seats. ^ EFFECT: higher reliability due to ruling out of impact loads in contact between vales and their seats. ^ 1 cl, 3 dwg |
