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. 17, 2012
Filed:
Jan. 13, 2009
Christopher E. Whitney, Highland, MI (US);
Steven G. Bryde, Davisburg, MI (US);
R. Travis Schwenke, Springboro, OH (US);
John L. Lahti, Novi, MI (US);
Ning Jin, Novi, MI (US);
Birendra P. Bhattarai, Novi, MI (US);
Cheryl A. Williams, Howell, MI (US);
James B Nicholson, Albion, MI (US);
Christopher E. Whitney, Highland, MI (US);
Steven G. Bryde, Davisburg, MI (US);
R. Travis Schwenke, Springboro, OH (US);
John L. Lahti, Novi, MI (US);
Ning Jin, Novi, MI (US);
Birendra P. Bhattarai, Novi, MI (US);
Cheryl A. Williams, Howell, MI (US);
James B Nicholson, Albion, MI (US);
Abstract
A method of operating an engine control system includes reducing pressures within cylinders of an engine based on an auto start command signal including: receiving a torque request signal; calculating a powertrain output torque; and controlling air flow to the engine based on the powertrain output torque. During a startup of the engine: electric motor torque is increased to a predetermined level and reduced to increase a current speed of the engine; combustion torque of the engine is activated and increased after the current speed is within a predetermined range and a manifold absolute pressure is less than a predetermined level; and the electric motor torque is increased based on a crankshaft output torque signal to increase a crankshaft output torque subsequent to the reducing of the electric motor torque and while performing the activating of the combustion torque.