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. 21, 2014
Filed:
Nov. 18, 2009
Lan Wang, Troy, MI (US);
Zhong Wang, Bellevue, WA (US);
Christopher E. Whitney, Highland, MI (US);
Jinchun Peng, Canton, MI (US);
Ian J. Mac Ewen, White Lake, MI (US);
Lan Wang, Troy, MI (US);
Zhong Wang, Bellevue, WA (US);
Christopher E. Whitney, Highland, MI (US);
Jinchun Peng, Canton, MI (US);
Ian J. Mac Ewen, White Lake, MI (US);
Abstract
A control system and method for controlling an engine includes a control module. The control module includes an evaporation control valve module closing a canister purge valve during a system diagnostic. A torque determination module determines a torque change for an end of the system diagnostic. A torque adjustment module changes an engine torque to a changed torque corresponding to the torque change. The evaporation control valve module opens the purge valve at the end of the diagnostic.