Patent · US Active

Method for operating a petrol engine, in particular of a motor vehicle, and motor vehicle

US11415033B2 · kind B2 · utility

0Cited by

7References

9Claims

0Family size

Assignee

Daimler AG · DE

Inventors

Guenter Hay · Fellbach, DE
Kai Hoffmann · Stuttgart, DE
Tobias SCHOEFFLER · Wernau, DE
Michael Stiller · Waiblingen, DE

Key dates

Filing date	Mar 5, 2019
Grant date	Aug 16, 2022
Priority date	—
Expiry date	Mar 5, 2039

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF01N2900/1804
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A method for operating a petrol engine, in which air is introduced into an exhaust tract through which exhaust gas from the petrol engine can flow, bypassing the petrol engine, includes introducing the air into the exhaust tract at a point arranged downstream of a first three-way catalytic converter arranged in the exhaust tract and upstream of a second three-way catalytic converter arranged in the exhaust tract downstream of the first three-way catalytic converter, while the petrol engine is operated with a sub-stoichiometric combustion air ratio, where a desulphurization of the second three-way catalytic converter is effected.

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