Patent · US Active

Device for metering fuel

US8528324B2 · kind B2 · utility

0Cited by

0References

12Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Guenter Keusen · Stuttgart, DE
Volker Reusing · Stuttgart, DE
Stefan Stein · Saulheim, DE

Key dates

Filing date	May 18, 2009
Grant date	Sep 10, 2013
Priority date	—
Expiry date	Apr 14, 2030

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/12
WIPO fieldEnvironmental technology
WIPO sectorChemistry

Abstract

The invention relates to a metering device for fuel upstream of an oxidation catalytic converter in the exhaust gas system of an internal combustion engine. A closing valve and/or a metering valve and an injection valve are integrated downstream of a supply device for fuel into a line leading to a metering unit. A return having a first overflow valve branches off upstream of the metering unit. A further return having a second overflow valve influencing a mean pressure level of the metering unit is disposed between the closing valve and the metering valve.

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