Method for driving a hybrid vehicle in connection with start of the combustion engine of the vehicle

US9527504B2 · kind B2 · utility

Assignee

• Scania CV AB · SE

Inventors

• Niklas Pettersson · Säter, SE
• Mikael Bergquist · Huddinge, SE
• Johan Lindström · Söderkulla, FI
• Anders Kjell · Ekerö, SE
• Mathias Björkman · Tullinge, SE

Key dates

• Filing date: Jun 26, 2013
• Grant date: Dec 27, 2016
• Expiry date: Jun 26, 2033

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S903/93
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A method for driving a hybrid vehicle with a propulsion system including a combustion engine, an electric machine with a rotor and a stator and a planetary gear with three components including a sun gear, a ring gear and a planet wheel carrier, where an output shaft of the combustion engine is connected to a first component, an input shaft of a gearbox is connected to a second component and the rotor of the electric machine is connected to a third component. The vehicle is driven forward by the electric machine. The reverse gear engaged in the gearbox drives the third component of the planetary gear to rotate with a negative rotational speed while a brake brakes the first component. Thereafter, move the component brake to an open position, so that the output shaft of the combustion engine rotates with a positive rotational speed so that the combustion engine may be started.