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:
Sep. 16, 2014
Filed:
Jan. 11, 2012
Bernard D. Nefcy, Novi, MI (US);
Daniel Scott Colvin, Farmington Hills, MI (US);
Marvin Paul Kraska, Dearborn, MI (US);
Walter Joseph Ortmann, Saline, MI (US);
Brian Thomas Soo, Farmington Hills, MI (US);
Bernard D. Nefcy, Novi, MI (US);
Daniel Scott Colvin, Farmington Hills, MI (US);
Marvin Paul Kraska, Dearborn, MI (US);
Walter Joseph Ortmann, Saline, MI (US);
Brian Thomas Soo, Farmington Hills, MI (US);
Ford Global Technologies, LLC, Dearborn, MI (US);
Abstract
A method for controlling a downstream clutch in a vehicle during an upstream torque disturbance includes slipping a downstream clutch by reducing the downstream clutch pressure, varying the downstream clutch pressure to a target threshold to control the slip of the downstream clutch, increasing the downstream clutch pressure to engage the downstream clutch. A vehicle includes a first prime mover, a second prime mover connected to the first prime mover using an upstream clutch, a transmission connected to the second prime mover using a downstream clutch, and a controller connected to the first and second prime movers and the upstream and downstream clutches. The controller is configured to (i) slip the downstream clutch by reducing the pressure, (ii) vary the downstream clutch pressure to a target threshold to control the slip, and (iii) increase the downstream clutch pressure to engage the clutch.