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:
Jun. 05, 2012
Filed:
Nov. 13, 2009
Marvin Paul Kraska, Dearborn, MI (US);
Walter Joseph Ortmann, Saline, MI (US);
Brandon R. Masterson, Dexter, MI (US);
Daniel Scott Colvin, Farmington Hills, MI (US);
Francis T. Connolly, Ann Arbor, MI (US);
Andrew John Silveri, Royal Oak, MI (US);
Marvin Paul Kraska, Dearborn, MI (US);
Walter Joseph Ortmann, Saline, MI (US);
Brandon R. Masterson, Dexter, MI (US);
Daniel Scott Colvin, Farmington Hills, MI (US);
Francis T. Connolly, Ann Arbor, MI (US);
Andrew John Silveri, Royal Oak, MI (US);
Ford Global Technologies, LLC, Dearborn, MI (US);
Abstract
A vehicle includes a motor/generator, a starter motor, a disconnect clutch disposed between the engine and the motor/generator, and at least one clutch disposed between the motor/generator and the vehicle drive wheels. When an engine start is requested, various parameters are controlled to ensure a smooth engine start wherein driveline torque disturbances are minimized. The starter motor is used to crank the engine at the lowest engine speeds when the engine-required torque is the highest. This reduces the amount of torque necessary to be supplied from the motor/generator, and further helps to reduce torque disturbances in the driveline. If the motor/generator is producing torque to propel the vehicle at the time the engine start is requested, a launch clutch or one or more transmission clutches can be controlled to provide slip between the motor/generator and the vehicle drive wheels to further reduce torque disturbances in the driveline.