Internal-combustion engines – Charge forming device – Including exhaust gas condition responsive means
Patent
1996-09-13
1997-11-25
Wolfe, Willis R.
Internal-combustion engines
Charge forming device
Including exhaust gas condition responsive means
F02D 4114
Patent
active
056900872
ABSTRACT:
A method and system for adaptive transient fuel compensation in a cylinder of an engine (300) estimates a fraction of fuel evaporated in a fuel intake system of the engine (b.sub.v) by measuring a temporal delay (515) between when an identification fuel charge is injected (505) and when a binary-type exhaust gas oxygen sensor (315) switches state. An estimate of a fraction of fuel adhering to the fuel intake system of the engine (c) is derived from the estimate of evaporation wall-wetting parameter (b.sub.v). Fuel delivery to the engine is adjusted dependent on the estimates of the adhering wall-wetting parameter (c) and the evaporation wall-wetting parameter (b.sub.v).
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Bush Kevin J.
Schumacher Darren A.
Hopman Nicholas C.
Motorola Inc.
Wolfe Willis R.
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