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:
Jan. 26, 2016
Filed:
Aug. 27, 2012
Peter J. Dix, Naperville, IL (US);
Garth H. Bulgrien, Ephrata, PA (US);
Robert C Prasse, Chicago, IL (US);
Pavel Kuros, Wood Dale, IL (US);
Peter J. Dix, Naperville, IL (US);
Garth H. Bulgrien, Ephrata, PA (US);
Robert C Prasse, Chicago, IL (US);
Pavel Kuros, Wood Dale, IL (US);
CNH Industrial America LLC, New Holland, PA (US);
Abstract
A method of calibrating a hydraulically operated park brake of a continuously variable transmission of a vehicle. With the vehicle moving at a set, slow speed within a specified range, and the park brake off, a search technique is used, wherein the brake hydraulic pressure is reduced by application of a control signal of a selected test value to apply the brake. When the selected test value is reached, it is held constant, and a condition in a HSU of the transmission is monitored for a change indicative of engagement of the park brake. This will expectedly be in the form of a pressure change and more particularly an increase indicating initial contact between the plates of the brake, and if the HSU change is not detected, the step will time out and another control signal value will be tested.