Patent · US Active

Method for heating a catalytic converter

US12025070B2 · kind B2 · utility

0Cited by

7References

10Claims

0Family size

Assignee

VOLKSWAGEN AKTIENGESELLSCHAFT · DE

Inventors

Christopher GESSENHARDT · Weferlingen, DE
Karsten Michels · Magdeburg, DE

Key dates

Filing date	Dec 9, 2023
Grant date	Jul 2, 2024
Priority date	—
Expiry date	Dec 9, 2043

Classification

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

Abstract

A method of heating a catalytic converter of an internal combustion engine, wherein the method comprises the steps of: igniting the gas charge in one of the cylinders in a range from 10° CA before ignition top dead center to 20° CA after ignition top dead center; and opening the exhaust valve of the cylinder exhaust of the cylinder in a range from 30° CA to 55° CA after ignition top dead center. The method allows the catalytic converter of the internal combustion engine to quickly reach operating temperature and thus contributes to the reduction of pollutant emissions. An internal combustion engine is also provided that is designed to carry out the method of the invention for heating a catalytic converter.

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