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. 09, 1991
Filed:
Apr. 09, 1990
Kevin T Talbot, Lichfield, GB;
Rover Group Limited, , GB;
Abstract
A spark ignited internal combustion engine is disclosed in which at least one of the inlet tracts of the engine has an optical knock sensor in the form of an infra-red temperature sensor located in it. The infra-red temperature sensor is positioned to sense by viewing past an inlet valve means associated with the respective inlet tract at least during part of the induction stroke of the respective cylinder of the engine the temperature of the upper surface of the respective piston. A control system for such an engine is also disclosed in which the output from the infra-red temperature sensor is supplied to an electronic control unit. The electronic control unit operates so as to adjust the ingition timing of the engine in response to the signal received from the infra-red temperature sensor.