Ego based adaptive transient fuel compensation for a spark ignit

Details Ego based adaptive transient fuel compensation for a spark ignit Ego based adaptive transient fuel compensation for a spark ignit

1996-09-13

1998-06-09

Nelli, Raymond A.

Internal-combustion engines

Charge forming device

Including exhaust gas condition responsive means

F02D 4100

Patent

active

057620547

ABSTRACT:
A method and system for adaptive transient fuel compensation in an engine (300) estimates fuel puddle dynamics for a cylinder in an engine by determining parameters of a wall-wetting model on every engine cycle by measuring a temporal delay (407) between when an identification fuel charge is injected (405) and when a binary-type exhaust gas oxygen sensor (213) switches state. Fuel delivery to the cylinder is adjusted (417) dependent on the estimated fuel puddle dynamics which are a function of the measured temporal delay (407).

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"Real Time Engine Control Using STR in Feedback System" by Maki, Akazaki, Hasegawa, Komoriya, Nishimura and Hirota, 1995.
"Adaptive Air-Fuel Ratio Control of a Spark-Ignited Engine" by Aault, Jones, Powell and Franklin.
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"Adaptive Compensation of Fuel Dynamics in an SI Engine Using a Switching EGO Sensor" by P.E. Moraal, Ford Research Laboratories.

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