Bi-turbocharger internal combustion engine with exhaust gas recycling

US6422222B1 · kind B1 · utility

Assignee

• Daimlerchrysler AG · US

Inventors

• Erich Arbeiter · Plochingen, DE
• Hans Fausten · Bad Sobernheim, DE
• Marcel Hassler · Eßlingen, DE
• Axel Löffler · Plochingen, DE
• Siegfried Weber · Stuttgart, DE

Key dates

• Filing date: Jun 19, 2000
• Grant date: Jul 23, 2002
• Expiry date: Jun 19, 2020

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/12
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

An internal combustion engine has a plurality of cylinders which are arranged in two rows, two exhaust-gas turbochargers which are driven in each case by the exhaust gases from the cylinders of a cylinder row, and exhaust-gas recirculation. Two exhaust-gas discharge lines branch off, upstream of the respective exhaust-gas turbocharger, part of the exhaust gases from the cylinders of a cylinder row to be recirculated and supply this part to a common recirculation line. By way of the common recirculation line, the exhaust gases to be recirculated are supplied, downstream of the exhaust-gas turbochargers, to an air supply. At least one valve, which serves as an exhaust-gas recirculation valve and by which the quantity of recirculated exhaust gases can be set, is provided. The valve has a stop by which a communicating connection made between the two exhaust-gas discharge lines can be shut off.