Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
METHOD FOR ADJUSTING A RICHNESS SET VALUE DURING AIR SCAVENGING IN AN ENGINE
Document Type and Number:
WIPO Patent Application WO/2018/202976
Kind Code:
A3
Abstract:
The invention relates to a method for adjusting the richness set value (Sensor rich set value), during air scavenging, of a so-called upstream sensor disposed in an exhaust line leaving a heat engine, the air scavenging being performed on fresh air in the engine and allowing unburnt air to enter the line, an adjustment of the richness of the air/fuel mixture in the engine being carried out according to an estimated richness set value (Sensor rich set value) at the upstream sensor. The estimated richness set value (Sensor rich set value) at the upstream sensor is updated using a corrective term (Term) at least a function of the engine speed (RM) and the scavenged air level (Tb) in order to supply an updated richness set value (Updated rich set value) at the upstream sensor.

Inventors:
TRAVAILLARD, Cyril (21 RUE DU BEL AIR, ECQUEVILLY, 78920, FR)
DAMBRICOURT, Frederic (42 RUE DE LA MUETTE, MAISONS LAFFITTE, 78600, FR)
GARNIER, Gregoire (111 RUE CHAMPIONNET, PARIS 18, 75018, FR)
Application Number:
FR2018/051017
Publication Date:
January 03, 2019
Filing Date:
April 24, 2018
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
PSA AUTOMOBILES SA (2-10 Boulevard de l'Europe, Poissy, 78300, FR)
International Classes:
F02D41/14; F02D41/24
Domestic Patent References:
WO2016051044A12016-04-07
WO1989005397A11989-06-15
Foreign References:
DE102009045792A12011-05-12
DE19844994A12000-04-06
US20150046063A12015-02-12
Attorney, Agent or Firm:
BOURGUIGNON, Eric (PSA AUTOMOBILES SA, Propriété Industrielle18 rue des Fauvelles, La Garenne Colombes, 92250, FR)
Download PDF: