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:
Jul. 17, 2009
Michael C. Zumbaugh, Troy, MI (US);
Jon C. Miller, Fenton, MI (US);
Robert C. Gibson, Canton, MI (US);
Mark D. Carr, Fenton, MI (US);
Michael J. Lucido, Northville, MI (US);
Michael N. Kotsonas, Highland, MI (US);
Michael C. Zumbaugh, Troy, MI (US);
Jon C. Miller, Fenton, MI (US);
Robert C. Gibson, Canton, MI (US);
Mark D. Carr, Fenton, MI (US);
Michael J. Lucido, Northville, MI (US);
Michael N. Kotsonas, Highland, MI (US);
Abstract
An engine control system for a vehicle comprises a combustion control module and an engine startup module. The combustion control module selectively controls a spark timing and airflow into an engine based on a counter value. The engine startup module, when the counter value is one of greater than and less than a predetermined final value, controls an equivalence ratio (EQR) of an air/fuel mixture provided to the engine during an engine cranking period based on a fuel rail pressure and controls the EQR during an engine running period based on the fuel rail pressure and an engine runtime period. The counter value is set to the predetermined final value after the engine is started for a first time after the engine is assembled.