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:
Aug. 06, 2002
Filed:
Oct. 11, 2000
John Curtis Hickey, Belleville, MI (US);
Robert Clayton Roethler, Howell, MI (US);
Ford Global Tech., Inc., Dearborn, MI (US);
Abstract
A system which utilizes engine coolant to selectively heat and cool fluid or oil used by another vehicle system, such as a transmission . System includes a first cooling path or circuit having a fluid-to-fluid heat exchanger which is fluidly coupled to engine . The system further includes a second fluid flow circuit , which contains and communicates transmission oil or fluid to and from transmission . Circuit includes a conventional solenoid controlled shunt valve which is fluidly coupled to transmission and to fluid-to-fluid heat exchanger . Valve is effective to selectively channel transmission oil through heat exchanger based on one or more parameters (e.g., ambient temperature and transmission oil temperature), thereby relatively rapidly heating the transmission oil under certain operating conditions.