Hydraulic parking lock actuator module

US12203547B2 · kind B2 · utility

Assignee

• Schaeffler Technologies AG & Co. KG · DE

Inventors

• Peter Greb · Ottersweier, DE
• Laszlo Man · Bühl, DE

Key dates

• Filing date: Apr 9, 2021
• Grant date: Jan 21, 2025
• Expiry date: Jun 28, 2041

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16H63/3433
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A hydraulic parking lock actuation module for a parking lock with a parking lock piston, which can be hydraulically actuated in a parking lock cylinder from an initial position in an actuation direction by applying an actuation pressure, and which is mechanically coupled to an actuation rod which can be fixed via an engaging device in order to act as a locking mechanism for the parking lock piston. In order to simplify the actuation of the parking lock, for actuating the parking lock piston and the locking mechanism for the parking lock piston, the hydraulic parking lock actuation module includes only one active actuation valve with a tank connection and a working pressure connection at which different hydraulic pressure levels are applied.