Internal-combustion engines – Charge forming device – Crankcase vapor used with combustible mixture
Patent
1995-08-07
1996-12-24
McMahon, Marguerite
Internal-combustion engines
Charge forming device
Crankcase vapor used with combustible mixture
F02M 2506
Patent
active
055865410
ABSTRACT:
An auxiliary assembly for improving the combustion efficiency of an engine, mounted in the ventilation passage system of a crankcase. A body portion of the auxiliary assembly is furnished with two valves. When an engine is accelerating, the low pressure in the intake manifold will disappear opening a valve having a low-vacuum attraction for regulating the intake air flow. When the engine is in idle speed, normal running condition, or in an accelerating condition, the intake manifold will be in a low pressure condition, or in an instant super-low pressure condition. A valve having a high vacuum attraction is used for regulating the intake air flow so as to supply a suitable amount of fresh air to the intake manifold to dilute the over-rich mixture in order to improve the combustion efficiency of an engine.
REFERENCES:
patent: 3437082 (1969-04-01), Bouwkamp et al.
patent: 3463132 (1969-08-01), Krieck
patent: 3548867 (1970-12-01), Grisebach
patent: 3646925 (1972-03-01), Eshelman
patent: 3659573 (1972-05-01), Bennett
patent: 3880130 (1975-04-01), Hecht
patent: 4291660 (1981-09-01), Molyneaux
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