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:
Jan. 30, 1990
Filed:
Nov. 14, 1988
Applicant:
Inventor:
Thomas Blumel, Schnitten, DE;
Assignee:
VDO Adolf Schindling AG, Frankfurt am Main, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02D / ; F02D / ;
U.S. Cl.
CPC ...
123489 ; 123440 ;
Abstract
In a method and arrangement for controlling the fuel/air ratio of an internal combustion engine in which the output voltage of an oxygen measurement probe which is arranged in the exhaust pipe of the internal combustion engine is used, after comparison with threshold values, for regulating the fuel/air ratio, the threshold values can be controlled as a function of extreme values of the output voltage.