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. 09, 2022
Filed:
Jun. 11, 2019
James R Hollowell, Brownstown, MI (US);
Zachary Rogalski, Rochester Hills, MI (US);
James R Hollowell, Brownstown, MI (US);
Zachary Rogalski, Rochester Hills, MI (US);
FCA US LLC, Auburn Hills, MI (US);
Abstract
Park control systems and methods operate such that, in response to a request to engage or disengage a park pawl of a vehicle park pawl system, a controller commands a hydraulic brake system to maintain a hydraulic brake pressure therein generated in response to depression of a brake pedal by a driver of the vehicle, when vehicle movement is detected after maintaining the hydraulic brake pressure, commands a vacuum-independent electric brake booster to generate and provide additional hydraulic brake pressure to the hydraulic brake system, commands the park pawl system to engage or disengage the park pawl to/from a transmission output shaft, and after the park pawl is engaged or disengaged to/from the transmission output shaft, commands the hydraulic brake system to release its hydraulic pressure at a defined rate.