Internal-combustion engines – Charge forming device – Crankcase vapor used with combustible mixture
Patent
1995-07-05
1996-07-02
McMahon, Marguerite
Internal-combustion engines
Charge forming device
Crankcase vapor used with combustible mixture
12318421, F02B 2506
Patent
active
055312071
ABSTRACT:
A multi-step engine intake air volume control device including a casing having an air input port and an air output port, an air filter element to filter air passing from the air input port to the air output port, a plurality of guide tubes respectively connected to the air output port of the casing, a plurality of electromagnetic valves controlled to open/close the guide tubes respectively, a manifold pipe installed in the positive crankcase ventilating system of the motor vehicle to guide air from the guide tubes into the engine of the motor vehicle, and a control circuit connected to the speedometer of the motor vehicle and controlled to alternatively close/open the electromagnetic valves subject to the revolving speed of the engine.
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patent: 4922882 (1990-05-01), Topfer
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patent: 5117782 (1992-06-01), Bischoff et al.
patent: 5235938 (1993-08-01), Haussmann et al.
patent: 5417195 (1995-05-01), Tachikawa et al.
Klein David I.
McMahon Marguerite
Rosenberg Morton J.
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