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:
Oct. 02, 1990
Filed:
Jun. 26, 1989
Robert Bosch GmbH, Stuttgart, DE;
Abstract
An electronic control system for an engine of a vehicle is provided with an idling RPM set-point regulator to deliver at its output a nominal idling speed control signal, and a summer for combining the control signal with a modulating error signal which is generated in response to a detection of a defect in a component part of the vehicle. The modulated nominal control signal causes a corresponding change in the normal running of the engine during idling operation or during reduced load thus signalling to the operator a faulty condition. Additional warning means are provided for generating optical warning signals, and means for generating the modulating error signal to be supplied to the electronic control system when a defect occurs in the warning means.