Patent · US Active

Method and system for purifying the exhaust gases of a combustion engine

US9393523B2 · kind B2 · utility

2Cited by

3References

11Claims

0Family size

Assignee

INERGY AUTOMOTIVE SYSTEMS RESEARCH (Societe Anonyme) · BE

Inventors

Francois Dougnier · Boortmeerbeek, BE
Dominique Madoux · Rumes, BE
Jules-Joseph Van Schaftingen · Brussels, BE
Paul Wouters · Vilvoorde, BE

Key dates

Filing date	May 10, 2013
Grant date	Jul 19, 2016
Priority date	—
Expiry date	May 10, 2033

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/12
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

An SCR method for purifying the exhaust gases of an internal combustion engine of a vehicle, according to which ammonia gas is exclusively metered in the exhaust gases, the method comprising a step of releasing ammonia gas from at least one solid absorbing matrix where it is stored by sorption and a step of metering the released ammonia gas in the exhaust gases. The method is such that it comprises a step of regenerating the solid absorbing matrix that consists in: generating a refilling ammonia gas by thermally decomposing an ammonia precursor in a heater mounted on board the vehicle; directing the refilling ammonia gas to the solid absorbing matrix where it is stored thereon.

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