Patent · US Active

Exhaust gas turbocharger for an internal combustion engine of a motor vehicle

US8522547B2 · kind B2 · utility

5Cited by

12References

11Claims

0Family size

Assignee

Daimler AG · DE

Inventors

Siegfried Sumser · Stuttgart, DE
Stephan Krätschmer · Trochtelfingen, DE
Markus Müller · Männedorf, CH

Key dates

Filing date	Nov 27, 2010
Grant date	Sep 3, 2013
Priority date	—
Expiry date	Mar 2, 2032

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/12
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

In an exhaust gas turbocharger for an internal combustion engine of a motor vehicle with a turbine comprising a turbine housing with at least a first and a second spiral channel, each being coupled to an exhaust gas line of an exhaust gas tract of the internal combustion engine for conducting exhaust gas to a turbine wheel arranged within the turbine housing and driving a compressor wheel of a compressor of the exhaust gas turbocharger, an area ratio Qg of the turbine corresponds to the formula Qg=(Aλ+AAGR)/AR>0.40, wherein Aλ refers to a narrowest flow cross-section of the first spiral channel, AAGR to a narrowest flow cross-section of the second spiral channel (52b) and AR to a wheel exit flow cross-section of the turbine exhaust channel. The invention further relates to a motor vehicle with an internal combustion engine and such an exhaust gas turbocharger.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.