Torque overlay device for a hybrid drive system, and a method for operating such a hybrid drive system

US9845088B2 · kind B2 · utility

Assignee

• Bayerische Motoren Werke Aktiengesellschaft · DE

Inventors

• Bernhard Hoess · Munich, DE
• Robert Huber · Schnaitsee, DE
• Simon Rogge · Gilching, DE
• Falk Prignitz · Markt Indersdorf, DE

Key dates

• Filing date: Aug 5, 2015
• Grant date: Dec 19, 2017
• Expiry date: Aug 27, 2035

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16H2200/2005
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

The invention relates to a torque overlay device for use in a hybrid drive system for motor vehicles having an internal combustion engine, an electric motor and the torque overlay device, wherein a torque of the internal combustion engine and of the electric motor are overlaid using the torque overlay device. The torque overlay device is connected, on the output side, to a driven element of the vehicle, and includes a first and a second torque input and a torque output, as well as a first transmission device and a second transmission device. The electric motor can be coupled to the first torque input in a torque-resistant manner, and the internal combustion engine can be coupled to the second torque input in a torque resistant manner, where the first torque input is connected to the first transmission device and the second torque input is connected to the second transmission device, both in a torque-resistant manner. In addition, the transmission devices may each be coupled, on the driven side, to the torque output of the torque overlay device in a torque-resistant manner.