Patent · US Active

Method for heating an exhaust gas aftertreatment component, and internal combustion engine

US11976604B2 · kind B2 · utility

0Cited by

4References

14Claims

0Family size

Assignee

VOLKSWAGEN AKTIENGESELLSCHAFT · DE

Inventors

Christopher GESSENHARDT · Weferlingen, DE
Sven Brannys · Lehrte, DE
Sergej Jakovlev · Braunschweig, DE

Key dates

Filing date	Jan 20, 2023
Grant date	May 7, 2024
Priority date	—
Expiry date	Jan 20, 2043

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/12
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A method for heating an exhaust gas aftertreatment component in an exhaust system of an internal combustion engine. At the combustion chamber, a fuel injector for injecting a fuel into the combustion chamber and a spark plug for igniting a flammable fuel-air mixture are arranged. The internal combustion engine has a valve lift curve switching mechanism, which allows for a shift and/or change of the opening times of the exhaust valve. The method includes: intake of fresh air into the combustion chamber, injection of a fuel into the combustion chamber, ignition of an ignitable fuel-air mixture in the combustion chamber when the piston is in a range of 10° KW to 30° KW after the upper ignition dead point, and opening of the exhaust valve when the piston is in a range of 55° KW to 95° KW after the upper ignition dead point.

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