The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 12, 2019
Filed:
May. 22, 2015
Renault S.a.s., Boulogne Billancourt, FR;
Yohann Petillon, Montigny le Bretonneux, FR;
RENAULT s.a.s., Boulogne Billancourt, FR;
Abstract
A method for controlling an internal combustion engine includes acquiring, at a first operating point of the engine, a value of a first characteristic parameter of the first operating point, and deducing from the value a first liquid coolant temperature setpoint in the engine and a first richness setpoint of a mixture of air and fuel to be admitted into the engine. The method also includes acquiring, on passing a second operating point different from the first, the value of the parameter and deducing from the value, second setpoints for temperature and richness. When the second temperature setpoint is strictly lower than the first temperature setpoint, the method includes determining an additional richness to be added to the second richness setpoint, acquiring a burned gas temperature, and progressively reducing the additional richness as a function of the burned gas temperature acquired.