Air/fuel control system and method

Details Air/fuel control system and method Air/fuel control system and method

1999-11-10

2000-10-31

Dolinar, Andrew M.

Internal-combustion engines

Charge forming device

Including exhaust gas condition responsive means

123681, 123687, 731173, F02D 4114

Patent

active

061386553

ABSTRACT:
An air/ratio control system and method for an internal combustion engine coupled to a fuel vapor recovery system simultaneously maps a difference between a desired air/fuel ratio and a measured air/fuel ratio to fueling errors and a purge vapor flow. This system and method maximizes the ability to purge the vapor recovery system while maintaining the ability to diagnose fuel errors.

REFERENCES:
patent: 5048493 (1991-09-01), Orzel et al
patent: 5423307 (1995-06-01), Okawa et al

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