Exhaust gas recirculation device

US6752132B2 · kind B2 · utility

Assignee

• MTU FRIEDRICHSHAFEN GMBH · DE

Inventors

• Werner Remmels · Markdorf, DE
• Peter Mattes · Mahlstetten, DE

Key dates

• Filing date: Jun 14, 2002
• Grant date: Jun 22, 2004
• Expiry date: Aug 6, 2022

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02M26/23
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A device for recirculating exhaust gas during the operation of multi-cylinder internal combustion engines. The cylinders of the internal combustion engine are divided into two groups. The waste gas of one group, preferably of one cylinder, can be supplied to the suction line of the internal combustion engine via an exhaust gas recirculation line. The exhaust gas recirculation line is controlled by a controllable valve in said recirculation line. A non-return valve which is preferably configured as a non-return flap in the exhaust gas collector line of the internal combustion engine automatically closes or opens a passage between two regions of the exhaust gas collector line according to the position of the valve device in the exhaust gas recirculation line. The non-return valve can be easily integrated into the exhaust gas collector line without the need for a specific control, even when there is very little room available.