Canister purge control method

Details Canister purge control method Canister purge control method

1993-08-09

1994-09-27

Black, Thomas G.

Boots, shoes, and leggings

36443105, 36443106, 36443112, 123519, 123520, G06F 1550, F02M 3302

Patent

active

053511930

ABSTRACT:
A fuel vapor canister is purged by admitting fuel vapor from the canister to the vehicle engine under control of a solenoid valve, the duty cycle of the valve being controlled to optimize the purge rate. Closed loop fuel correction and block learn fuel correction factors developed by the fuel control system are used to update a learned purge duty cycle which is stored in a keep-alive memory.

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patent: 5090388 (1992-02-01), Hamburg et al.
patent: 5115785 (1992-05-01), Cook
patent: 5216991 (1993-06-01), Iida et al.

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