Air fuel ratio control apparatus for internal combustion engines

Details Air fuel ratio control apparatus for internal combustion engines Air fuel ratio control apparatus for internal combustion engines

1995-07-12

1996-04-16

Dolinar, Andrew M.

Internal-combustion engines

Charge forming device

Including exhaust gas condition responsive means

123698, F02D 4114

Patent

active

055072690

ABSTRACT:
In a fuel vapor purge mechanism, the fuel vapor generated from a fuel tank and stored in a canister undergoes flow volume control with a purge solenoid valve while being introduced to an intake system of the engine via a purge passageway. Meanwhile, in an air/fuel ratio feedback control system, by means of a linear air/fuel ratio sensor mounted on an exhaust system of the engine, the air/fuel ratio of air-fuel mixture of fuel and intake air including the fuel vapor. If a change amount of a purge ratio the fuel vapor goes above a determined value, there is compensation of the air/fuel ratio compensation coefficient FAF concerned with the feedback control based on the change ratio.

REFERENCES:
patent: 5048493 (1991-09-01), Orzel et al.
patent: 5216997 (1993-06-01), Osanai et al.

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