Internal-combustion engines – Charge forming device – Having fuel vapor recovery and storage system
Patent
1996-09-23
1997-11-04
Moulis, Thomas N.
Internal-combustion engines
Charge forming device
Having fuel vapor recovery and storage system
F02M 2508
Patent
active
056828632
ABSTRACT:
The ON/OFF frequency of a purge control valve is defined by a product of an integer and a frequency of REF signal, where the integer does not have a divisor equal to any of the divisors of the number of the cylinders of the engine, other than one. The engine is prevented from being supplied a purge gas concentratedly to a specific cylinder by opening the purge control valve for every five cylinders, for example.
REFERENCES:
patent: 4465048 (1984-08-01), Morozumi et al.
patent: 5263460 (1993-11-01), Baxter et al.
patent: 5289811 (1994-03-01), Covert et al.
patent: 5351193 (1994-09-01), Poirier et al.
patent: 5551406 (1996-09-01), Everingham et al.
Moulis Thomas N.
Nissan Motor Co,. Ltd.
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