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:
Apr. 03, 2012
Filed:
Jun. 25, 2007
Richard Ptak, Woodstock, IL (US);
Ly V. Tran, Carol Stream, IL (US);
David M. Hsia, Bartlett, IL (US);
Richard Ptak, Woodstock, IL (US);
Ly V. Tran, Carol Stream, IL (US);
David M. Hsia, Bartlett, IL (US);
International Engine Intellectual Property Company LLC, Lisle, IL (US);
Abstract
A motor vehicle engine () has glow plugs () for aiding combustion of fuel in combustion chambers of the engine when the engine is cold and an ignition switch () is operated to crank the engine. An aberration in engine speed () is used to indicate an under- or non-performing glow plug. Data from sources other than the engine speed source (), such as data related to engine fueling, is also processed by a processor () to exclude them as the cause of the aberration.