Patent · US Active

Procedures for the operation of an internal combustion engine's particle filter and the mechanism for the execution of the procedure

US7963107B2 · kind B2 · utility

1Cited by

6References

12Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Ralf Wirth · Leonberg, DE
Dirk Samuelsen · Ludwigsburg, DE
Christian Post · Spring, US
Andre Wiedersberg · Albersroda, DE

Key dates

Filing date	Jan 10, 2007
Grant date	Jun 21, 2011
Priority date	—
Expiry date	Apr 22, 2030

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/40
WIPO fieldEnvironmental technology
WIPO sectorChemistry

Abstract

A procedure for the operation of an internal combustion engine is disclosed, in whose exhaust gas area a particle filter is arranged which is freed from the stored particles during a regeneration. A measure for a load of the combustion engine is compared to a load threshold value. An overrun cut-off, at which the fuel metering is completely suppressed, is carried out if the measure for the load falls below the load threshold value and if the engine speed of the combustion engine lies above an engine speed threshold value. The load threshold value that has been determined to a value higher than zero is further dependant on the particle filter's regeneration signal. The procedure aims to prevent the overheating of the particle filter during its regeneration.

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