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1. (WO2018202977) METHOD FOR UPDATING A DYNAMIC FOR ADJUSTING A RICHNESS VALUE TO A SET VALUE IN AN ENGINE

Pub. No.:    WO/2018/202977    International Application No.:    PCT/FR2018/051018
Publication Date: Fri Nov 09 00:59:59 CET 2018 International Filing Date: Wed Apr 25 01:59:59 CEST 2018
IPC: F02D 41/14
F02B 77/08
F02B 25/00
F02D 41/14
Applicants: PSA AUTOMOBILES SA
Inventors: TRAVAILLARD, Cyril
DAMBRICOURT, Frederic
Title: METHOD FOR UPDATING A DYNAMIC FOR ADJUSTING A RICHNESS VALUE TO A SET VALUE IN AN ENGINE
Abstract:
The invention relates to a method for updating a dynamic for adjusting a measured richness to a richness set value for an air/fuel mixture in a heat engine when at least one pre-determined engine operating condition (cond1 to condx) is in effect, a nominal richness adjustment dynamic (Dyn nom) being replaced by an updated adjustment dynamic (Dyn fin) specific to the at least one condition (cond1 to condx). The condition (cond1 to condx) is selected during earlier tests on the engine with the calibration of at least one value of at least one engine operating parameter indicating that the condition (cond1 to condx) is in effect, and, as soon as the value is detected at a given moment in the operation of the engine, a correction is made to the nominal dynamic (Dyn nom) according to a weighting term (Fpond) in order to supply an updated dynamic (Dyn fin) as long as the value is detected.