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:
Sep. 04, 1990
Filed:
Nov. 14, 1988
Applicant:
Inventors:
Karl Motz, Bergkirchen-Eisolzried, DE;
Markus Diehl, Furstenfeldbruck, DE;
Assignee:
Man Technologie GmbH, Munich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02D / ;
U.S. Cl.
CPC ...
60285 ; 60276 ; 123440 ;
Abstract
A method for controlling the combustion air ratios for IC engines using a three way catalyst. In known systems the control operation has been impaired by several factors, one being the aging of the lambda probe used for control. In order to allow for such factors the set point of the controller is adjusted under certain conditions or at certain intervals. For the adjustment of the set point the increase in the exhaust gas temperature as caused by the exothermic reaction in the catalyst is measured and employed for establishing a new set point.