Power-splitting transmission

US6578450B1 · kind B1 · utility

Assignee

• ZF FRIEDRICHSHAFEN AG · DE

Inventors

• Stefan Prebeck · Passau, DE
• Michael Walser · Schaan, LI

Key dates

• Filing date: Jan 10, 2002
• Grant date: Jun 17, 2003
• Expiry date: Feb 10, 2022

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T74/19149
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A power-splitting transmission which consists of a hydraulic power branch (7) and a mechanical power branch. Leakage in the hydraulic power branch (7) as well as the activation apparatuses (12) in the mechanical power branch are supplied with a pressurized medium from a common pressure source (1). The common pressure source (1) transports pressure medium to the hydraulic power branch (7), through a damping apparatus (3), and simultaneously transports pressure medium to the activation apparatuses (12) of the shifting elements (13) of the mechanical power branch via a controller (11).