Four-cycle engine

Details Four-cycle engine Four-cycle engine

1995-09-21

1997-08-26

Okonsky, David A.

Internal-combustion engines

Intake manifold

Manifold tuning, balancing or pressure regulating means

123572, F02B 7518, F02B 7502

Patent

active

056601557

ABSTRACT:
An engine induction system having a check valve upstream of the intake port for precluding reverse flow. A plenum device is communicated with the induction system downstream of the check valve for reducing inertial effects and improving charging efficiency. The plenum device may be the crankcase chamber of the engine. In that case crankcase ventilation may also be controlled and improved. Crankcase supercharging may also be generated. These features may be combined with variable valve timing to further improve engine performance.

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Research Disclosure, No. 352, 1 Aug. 1993, Emsworth GB, p. 539 XP000395263.

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