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:
Jul. 18, 2006
Filed:
Mar. 15, 2004
Jagadish Sorab, West Bloomfield, MI (US);
Tom Tibbles, Livonia, MI (US);
Michael Schroder, Northville, MI (US);
John Glidewell, Grass Lake, MI (US);
Jagadish Sorab, West Bloomfield, MI (US);
Tom Tibbles, Livonia, MI (US);
Michael Schroder, Northville, MI (US);
John Glidewell, Grass Lake, MI (US);
Ford Global Technologies, LLC, Dearborn, MI (US);
Abstract
A heat exchanger integrated into the transmission oil pan transfers heat from post-catalyst exhaust gases to the transmission oil. Inlet and outlet ducts route exhaust gas between the heat exchanger and an exhaust pipe located downstream of the catalyst. The exhaust pipe accommodates a control valve that diverts exhaust gas flow to the heat exchanger during the warm-up phase, or to the tailpipe during steady state operation. A control function is provided to monitor transmission oil temperature and engine operating conditions and to control actuation of the valve. The main input parameter to the control function is the transmission oil temperature.