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:
Oct. 25, 1994
Filed:
Sep. 10, 1992
Gilles Jehanno, Aubergenville, FR;
Regie Nationale des Usines Renault, Boulogne-Billancouret Cedex, FR;
Abstract
In internal combustion engines in which residual burnt gases (GBR) exist and in which a recirculation of exhaust gases (RGE) is provided as well as the engines in which the gas mixture is low in gasoline or in the case of diesel engines, a digital value Cg, representative of the average gas torque per combustion and provided by a system, not shown, is corrected as a function of total rate q of recirculation of the exhaust gases and the presence of the residual burnt gases. The correcting device comprising calculating means (56) for producing a correction factor Q.sub.2 -(1-p.sub.2.q), in which p.sub.2 is a constant close to 0.50 and q, the value of said total rate, then applying this factor Q.sub.2 to value Cg, if necessary previously corrected as a function of richness r of the gas mixture when r<1, for providing a corrected digital value (Cg).sub.q or (Cg).sub.r,q. Other devices are provided for correcting Cg in the case of excess oxidant and in the case of diesel engines.