Hydraulic park gear assembly

• Main Author: Gunderson Joel H
• Format: Patent
• Language: English
• Published: 13.06.2017
• Subjects: ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; BLASTING; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; BRAKES; CLUTCHES; COUPLINGS FOR TRANSMITTING ROTATION; ENGINEERING ELEMENTS AND UNITS; GEARING; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OFVEHICLES; THERMAL INSULATION IN GENERAL; TRANSPORTING; VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES; VEHICLES IN GENERAL; WEAPONS

A park gear and pawl assembly for a vehicle transmission includes a park gear, a hydraulic control passage, a park pawl, a hydraulic pump, an abutment assembly, a park rod, and a hydraulic actuator. The park gear is fixed for common rotation to an output shaft of the transmission. The hydraulic passage is integrated into a housing of the transmission. The park pawl is engaged with the park gear when the park pawl is in a first position. The hydraulic pump includes an input member and output port. The input member is drivingly connected to the output shaft of the transmission and the output port is in communication with the hydraulic. The park rod at least partially disposed in the abutment assembly. The hydraulic actuator axially actuated via hydraulic fluid pressure in the hydraulic passage.