Engine fuel injection controller

Details Engine fuel injection controller Engine fuel injection controller

1993-09-13

1995-12-12

Moulis, Thomas N.

Internal-combustion engines

Charge forming device

Having fuel vapor recovery and storage system

123698, 73580, F02M 4114, F02M 2508

Patent

active

054740495

ABSTRACT:
An engine provided with a purge valve introducing fuel vapor from the fuel tank into the intake passage, a purge valve for opening and closing the passage, a device for setting a basic flowrate of the purge valve according to the engine running conditions, and a device for detecting the fuel concentration of the purge gas. Further, a device is provided for correcting the basic flowrate based on the fuel concentration of the purge gas so as to decrease the purge valve flowrate when the fuel concentration is high, and increase the purge valve flowrate when it is low. The purge valve opening is controlled according to this corrected flowrate, and purging can therefore be performed rapidly without adversely affecting the air-fuel ratio.

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patent: 5216995 (1993-06-01), Hosoda et al.
patent: 5245978 (1993-09-01), Orzel et al.

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