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:
Jul. 25, 2000
Filed:
Feb. 19, 1998
Michael-Rainer Busch, Ebersbach, DD;
Uwe Kleinecke, Winnenden, DD;
DaimlerChrysler AG, , DE;
Abstract
The invention provides a method of checking for correct connection of lambda sensors in an internal combustion engine with one or more cylinder groups that incorporates an engine control and a plurality of lambda sensors, with a separate exhaust line with an exhaust catalytic converter and at least one lambda sensor with a lambda-regulating unit connected thereto being associated with each group of cylinders. While retaining the injection of an ignitable mixture at the beginning of a delay time that includes at least the reaction or switching time of the lambda sensors in its current regulating state, the engine control adjusts the lambda-regulating unit of at least one cylinder group, toward rich or lean engine operation and/or suspends its regulating function during the delay. The signal from the lambda sensor intended for use with the selected cylinder group is investigated to determine whether it shows a reaction that is associated with the manipulation performed and indicates a correct connection of this lambda sensor.