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:
Jun. 12, 1990
Filed:
Jan. 26, 1989
Reiner Weingartner, Hofheim, DE;
VDO Adolf Schindling AG, Frankfurt am Main, DE;
Abstract
A method of regulating the fuel/air ratio of an internal combustion engine, in which the output voltage of an oxygen measurement probe, located in the exhaust pipe of the engine, is used to regulate the fuel/air ratio in the manner that, upon a sudden change of the output voltage of the oxygen measurement probe, a signal jump takes place which is dependent on the direction of the sudden change, followed then by a change, which is substantilly continuous in time, of a correcting variable for the fuel/air ratio. Under substantially steady-state operating conditions the times of the jumps are controlled independently of the sudden changes in the output voltage of the oxygen measurement probe in the manner that the times between the jumps are smaller than the times between previous sudden changes in the output voltage of the oxygen measurement probe.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile