Patent · US Active

Method for adjusting the air-fuel ratio in the exhaust gas of a direct injection internal combustion engine for NOx storage catalytic converter regeneration

US9885301B2 · kind B2 · utility

1Cited by

1References

16Claims

0Family size

Assignee

FEV Group GmbH · DE

Inventors

Thorsten Schnorbus · Aachen, DE
Joschka Schaub · Aachen, DE

Key dates

Filing date	Mar 4, 2016
Grant date	Feb 6, 2018
Priority date	—
Expiry date	Aug 20, 2036

Classification

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

Abstract

Method for adjusting the air-fuel ratio in the exhaust gas of a direct injection internal combustion engine, wherein the combusting fuel injection is divided into a plurality of individual injections, and wherein the air-fuel ratio in the exhaust gas of the internal combustion engine for a given load (PMI) is predictively adjusted by at least one model, by adjusting the position of the centroid of heat release conversion rates and the injection amount of the total combusting fuel injection, to a value that is necessary for the regeneration of an NOx storage catalytic converter in the exhaust system of the internal combustion engine.

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