Patent · US Active

Procedure and control unit to operate a diesel engine

US7937931B2 · kind B2 · utility

0Cited by

3References

9Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Andreas Pfaeffle · Löwenstein, DE
Wolfgang Klenk · Besigheim, DE
Frank Schweizer · Winnipeg, CA
Stefan Scherer · Büttelborn, DE
Andreas Schaffrath · Ditzingen, DE

Key dates

Filing date	Sep 4, 2007
Grant date	May 10, 2011
Priority date	—
Expiry date	Mar 9, 2030

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02D2250/32
WIPO fieldEnvironmental technology
WIPO sectorChemistry

Abstract

A procedure is introduced to operate a diesel engine, which has a catalytic converter with three-way conversion characteristics. The procedure is characterized thereby, in that if the engine rotational speed increases without in the process exceeding an engine rotational speed threshold value and the engine's load is greater than a load threshold value, the diesel engine is operated in such a manner that the diesel engine alternately generates an oxidizing and a reductive exhaust gas atmosphere before the catalytic converter. Additionally a control unit is introduced, which controls the sequence of the procedure.

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