METHOD OF OPERATION OF INTERNAL COMBUSTION ENGINE AND DEVICE FOR BYPASSING EXHAUST GASES Russian patent published in 1994 - IPC

FIELD: mechanical engineering; internal combustion engines. SUBSTANCE: bypass valve 6 with hydraulic drive provides automatic impulse passing of portions of gases from exhaust connection 4 into intake connection 3 near bottom dead center of piston where pressures are close to equal values and bypassing does not cause losses in bypassed gas energy. Bypassing is provided by hydraulically controlled bypass valve 6. The latter is kinematically coupled with plunger 16 installed in hydraulic cylinder 10. Tappet 11 installed in hydraulic cylinder is kinematically coupled with camshaft 21. Amount of bypassed exhaust gases is defined by phases of opening and closing of bypass valve 6. EFFECT: enhanced reliability. 3 dwg