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:
Nov. 19, 2002
Filed:
Dec. 01, 2000
Martin Muller, Ann Arbor, MI (US);
Peter M. Olin, Ann Arbor, MI (US);
Bart Hubert Schreurs, Athus, BE;
Delphi Technologies, Inc., Troy, MI (US);
Abstract
An improved method of dynamically estimating the concentration of recirculated exhaust gases in air/fuel mixture of an internal combustion engine equipped with an exhaust gas recirculation (EGR) system. The EGR concentration at engine intake ports is separately estimated with static and dynamic models, and the EGR concentration for control purposes is determined by adjusting the result of the dynamic model based on a deviation of the dynamic model from the static model. This method provides the total EGR concentration, but can alternatively provide the inert EGR concentration through the inclusion of an exhaust inert ratio model.