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:
Feb. 24, 2004
Filed:
Aug. 28, 2001
Mark Kopec, Clarkston, MI (US);
Eric Sandstrom, Oxford, MI (US);
BorgWarner Inc., Troy, MI (US);
Abstract
An electrohydraulic transmission control apparatus ( ) that produces, controls and directs hydraulic pressure inputs to the clutches, brakes and shift mechanisms of an automatic transmission to shift the transmission. A module body ( ) supports control apparatus components and is removably mountable to a transmission housing ( ) of the transmission. The module body ( ) defines a plurality of fluid conduits ( ). A plurality of control valves ( ) is disposed on the module body ( ) and meter hydraulic fluid through the conduits ( ) to brake and clutch hydraulic cylinders and shift mechanisms in the transmission. A plurality of solenoid-operated control valves ( ) is also disposed on the module body. A controller ( ) disposed on the module body is connected to the solenoids ( ) and controls the valves by operating the solenoids ( ) in accordance with inputs received from sensors ( ) that detect various factors representing the running state of the transmission and the vehicle it's mounted in. A hydraulic oil pump ( ) integrated into the apparatus ( ) provides pressurized hydraulic oil to the control valves ( ) and includes internal controller ( ) software that directs calibration of the apparatus.