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:
Mar. 26, 2002
Filed:
Aug. 10, 2000
Applicant:
Inventor:
Robert A. Noel, Anderson, IN (US);
Assignee:
Delphi Technologies, Inc., Troy, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01L 2/322 ;
U.S. Cl.
CPC ...
G01L 2/322 ;
Abstract
An apparatus for detecting a pre-ignition combustion condition in an internal combustion engine. An ion sensing circuit measures an ion current during the ignition coil charging time. An ion current level above a predetermined reference level indicates pre-ignition combustion. A powertrain control module is responsive to a pre-ignition signal for discontinuing delivery of fuel to the cylinder in which the ion current was measured.