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. 29, 2013
Filed:
Mar. 17, 2010
Lee C. Walker, Swartz Creek, MI (US);
B. Jerry Song, Novi, MI (US);
Joseph Allen Griffin, Grand Blanc, MI (US);
Byungho Lee, Ann Arbor, MI (US);
Lee C. Walker, Swartz Creek, MI (US);
B. Jerry Song, Novi, MI (US);
Joseph Allen Griffin, Grand Blanc, MI (US);
Byungho Lee, Ann Arbor, MI (US);
Abstract
An idle control system for a vehicle comprises an actuator control module, a torque determination module, a deviation analysis module, and an idle speed reduction module. The actuator control module regulates an engine speed based on a desired idle speed when an engine idle mode is enabled. The torque determination module determines actual torques for a cylinder of an engine while the engine idle mode is enabled. The deviation analysis module determines a standard deviation based on more than one of the actual torques while the engine idle mode is enabled. The idle speed reduction module determines an idle speed reduction based on the standard deviation and decreases the desired idle speed based on the idle speed reduction.