Internal-combustion engines – Charge forming device – Having fuel vapor recovery and storage system
Reexamination Certificate
2007-05-31
2009-06-09
Gimie, Mahmoud (Department: 3747)
Internal-combustion engines
Charge forming device
Having fuel vapor recovery and storage system
C123S519000, C123S041860
Reexamination Certificate
active
07543573
ABSTRACT:
A recovery system for fuel for motor vehicles includes a canister having an absorbent media such as activated charcoal. The canister includes an inlet in fluid communication with the blow-by vent of an internal combustion engine and an outlet in communication with the air intake manifold of the engine. Control valves may be incorporated into the system to control fluid flows. As a single vaporization temperature fuel or fuel constituent such as ethanol that has mixed with engine oil during startup vaporizes when the oil reaches its vaporization temperature, it is first absorbed in the activated charcoal and then slowly released and burned in the engine. The system has particular applicability to E85 fueled vehicles.
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Gimie Mahmoud
GM Global Technology Operations Inc.
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