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. 05, 1999
Filed:
Jun. 08, 1998
Lawrence P Tracy, Columbus, IN (US);
Gary W Ream, Hope, IN (US);
Kenneth R Stevens, Franklin, IN (US);
Cummins Engine Company, Inc., Columbus, IN (US);
Abstract
The present invention provides a knock sensing system for an internal combustion engine which utilizes only a single knock sensor associated with one of the engine cylinders. Operation of the engine is controlled such that the cylinder which is equipped with a knock sensor will be the first cylinder to experience combustion knock as compared to the remaining engine cylinders. This can be done by various methods, such as advancing the ignition timing on the designated cylinder. The knock sensor is then monitored by the engine control module in order to sense premature detonation on the designated cylinder, knowing that it is highly unlikely that knocking will occur on the other engine cylinders if knocking is not occurring on the designated cylinder. When knocking is sensed, appropriate action, such as shutting down the engine, may be taken by the engine control module. The knock sensor is preferably mounted to a capscrew which couples the intake manifold to the cylinder head.