DocumentCode :
294471
Title :
Adaptive compensation of fuel dynamics in an SI engine using a switching EGO sensor
Author :
Moraal, P.E.
Author_Institution :
Ford Res. Labs., Dearborn, MI, USA
Volume :
1
fYear :
1995
fDate :
13-15 Dec 1995
Firstpage :
661
Abstract :
Current engine controllers employ a feedforward compensator to eliminate the effects of fuel dynamics (“wall-wetting”) on the air-fuel ratio trace. Uncompensated or improperly compensated fuel dynamics may cause significant A/F excursions during transient operations, accompanied by increased emissions levels. This paper describes the development of an adaptive algorithm for transient fuel compensation using only a switching exhaust gas oxygen (EGO) sensor, in order to ensure proper compensation of fuel dynamics in spite of initial miscalibrations, vehicle-to-vehicle variability, changing dynamics due to aging (intake valve deposits build up), or changing dynamics due to changing fuel properties. Experimental results demonstrate the effectiveness of the proposed algorithm
Keywords :
adaptive control; compensation; gas sensors; ignition; internal combustion engines; A/F excursions; SI engine; adaptive compensation; engine controllers; feedforward compensator; fuel dynamics; spark ignition engines; switching EGO sensor; transient fuel compensation; transient operations; Engines; Exhaust systems; Fuels; Gas detectors; Oxygen; Sensor phenomena and characterization; Temperature control; Temperature sensors; Valves; Vehicle dynamics;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Decision and Control, 1995., Proceedings of the 34th IEEE Conference on
Conference_Location :
New Orleans, LA
ISSN :
0191-2216
Print_ISBN :
0-7803-2685-7
Type :
conf
DOI :
10.1109/CDC.1995.478988
Filename :
478988
Link To Document :
بازگشت