Patent · US Active

Method for operating an internal combustion engine, and internal combustion engine

US9518486B2 · kind B2 · utility

1Cited by

1References

16Claims

0Family size

Assignee

Daimler AG · DE

Inventors

Thomas Koch · Remchingen, DE
Alexander Massner · Eßlingen, DE
Frank Zimmermann · Stuttgart, DE
Herbert Zoeller · Stuttgart, DE

Key dates

Filing date	Aug 16, 2013
Grant date	Dec 13, 2016
Priority date	—
Expiry date	Aug 16, 2033

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/40
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A method for operating an internal combustion engine involves using an injection valve to post-inject fuel into at least one cylinder of the internal combustion engine in order to help regenerate a particulate filter that is arranged in an exhaust system of the internal combustion engine, downstream of an oxidation catalyst. A closing moment of a discharge valve of a cylinder of the internal combustion engine is advanced when the temperature of the oxidation catalyst is in a first temperature range, and the post-injections are performed when the temperature of the oxidation catalyst is in a second temperature range, an upper limit of the first temperature range having a lower value that an upper limit of the second temperature range.

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