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:
Feb. 19, 2013
Filed:
Apr. 15, 2009
Kenneth J. Cinpinski, Ray, MI (US);
Byungho Lee, Ann Arbor, MI (US);
Donovan L. Dibble, Utica, MI (US);
Joseph R. Dulzo, Novi, MI (US);
Scot A. Douglas, Canton, MI (US);
Kenneth J. Cinpinski, Ray, MI (US);
Byungho Lee, Ann Arbor, MI (US);
Donovan L. Dibble, Utica, MI (US);
Joseph R. Dulzo, Novi, MI (US);
Scot A. Douglas, Canton, MI (US);
Abstract
An engine control system comprises a fuel pump control module and a diagnostic module. The fuel pump control module controls a pressure pump to inject fuel into a fuel rail. The diagnostic module determines an estimated pressure increase within the fuel rail based on the injected fuel, compares an actual pressure increase within the fuel rail to the estimated pressure increase, and indicates when the actual pressure increase is less than the estimated pressure increase.