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:
Mar. 21, 2017
Filed:
Apr. 23, 2015
Borgwarner Inc., Auburn Hills, MI (US);
Larry A. Pritchard, Macomb, MI (US);
Thad Kopp, Oakland Twp., MI (US);
Keith Feldt, Waterford, MI (US);
Mark Buchanan, Rochester Hills, MI (US);
Peizhang Tu, Shanghai, CN;
BorgWarner Inc., Auburn Hills, MI (US);
Abstract
A hydraulic actuation system () and method of assembly for disconnecting a secondary driveline () can be used in an all-wheel drive (AWD) vehicle () having a power take-off unit (PTU) () for transferring rotary power to the secondary driveline (). The hydraulic actuation system () can include a source of pressurized fluid (), a hydraulically actuated synchronizer () for synchronizing rotary motion between the PTU () and the secondary driveline (), at least one hydraulically actuated clutch assembly () for connecting and disconnecting secondary vehicle wheels () with respect to the secondary driveline (), an area control solenoid (ACS) valve () in fluid communication with the source of pressurized fluid () to modulate pressure to engage and disengage the synchronizer (), and at least one variable force solenoid (VFS) valve () in fluid communication with the source of pressurized fluid () to modulate pressure to the at least one hydraulically actuated clutch assembly ().