Exhaust gas turbocharger with a variable turbine geometry

US6543226B1 · kind B1 · utility

Assignee

• Daimlerchrysler AG · US

Inventors

• Roland Bischoff · Schorndorf, DE
• Helmut Daudel · Schorndorf, DE
• Guenter Fleckenstein · Kleinkahl, DE
• Hermann Hiereth · Eßlingen, DE

Key dates

• Filing date: Mar 15, 1999
• Grant date: Apr 8, 2003
• Expiry date: Aug 16, 2019

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02D9/06
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

An exhaust gas turbocharger with a variable turbine geometry can be adjusted in the fired engine operation by an automatic turbine controller to a definable desired supercharging pressure in the intake port. In the braking operation, the turbocharger can be adjusted by an engine braking system with an automatic braking controller as a function of operating parameters of the internal-combustion engine into a ram position which increases the pressure in the exhaust gas system. A change-over element is provided for the change-over between the engine braking system and the automatic turbine controller. To make the exhaust gas turbocharger variable, the automatic turbine controller and the engine braking system each have a modular design and a separate construction. A manual braking signal to the engine braking system, can be generated in a manually adjustable brake operating device. A change-over element is provided for changing over between the automatic braking controller and the brake operating device.