Evaporative fuel controller for internal combustion engine

Details Evaporative fuel controller for internal combustion engine Evaporative fuel controller for internal combustion engine

1997-12-05

1999-04-13

Moulis, Thomas N.

Internal-combustion engines

Charge forming device

Having fuel vapor recovery and storage system

F02M 3304

Patent

active

058933530

ABSTRACT:
An evaporative fuel controller for an internal combustion engine, which is designed to prevent the engine from experiencing aggravated drivability and rough idle operation with a concomitant stall, which would otherwise occur when a fuel tank is refueled during operation of the engine. The evaporative fuel controller includes a control which, when it detects that the engine is in idle operation and that the fuel tank is being supplied with fuel, then a mode of control over a purge valve is changed from one which accommodates an operating state of the engine to another which permits the continuance of engine idle operation as well as the continuance of the supply of fuel to the tank.

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