Drive with an internal combustion engine and an expansion machine with gas return

US9096116B2 · kind B2 · utility

Assignee

• AUDI AG · DE

Inventors

• Thomas Reuss · Fürstenau, DE
• Marc Fessler · Weinsberg, DE
• Johannes Dawidziak · Großrinderfeld, DE

Key dates

• Filing date: Dec 23, 2011
• Grant date: Aug 4, 2015
• Expiry date: Jul 27, 2032

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/62
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A drive for a vehicle includes an internal combustion engine having a combustion chamber delimited by a cylinder and a piston, a compressed gas storage connectable with the combustion chamber for storing a gas compressed in the combustion chamber, a separate expansion machine for expanding compressed gas from the combustion chamber or from the compressed gas storage by performing mechanical work, and devices for supplying gas from the expansion machine into the combustion chamber or into an intake passage of the internal combustion engine. The drive may, alternatively or in addition, also include devices for heating the compressed gas from the combustion chamber or from the compressed gas storage before the compressed gas enters into the expansion machine.