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:
Jan. 31, 1984
Filed:
Nov. 23, 1981
Applicant:
Inventors:
John F Schweikert, Sterling Heights, MI (US);
David S Grossman, Rochester, MI (US);
Edward E Durham, Utica, MI (US);
Assignee:
General Motors Corporation, Detroit, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02P / ;
U.S. Cl.
CPC ...
123425 ; 123492 ;
Abstract
A spark timing control system for an internal combustion engine is responsive to a changing engine operating parameter signalling an engine tip-in event to retard spark timing by an amount sufficient to eliminate tip-in knock and for a predetermined time period ending 175-300 milliseconds after initiation of the tip-in event, so that no perceptible engine performance loss results.