Patent · US Expired

Method of reducing the emission of toxic exhaust gas components in an internal combustion engine

US5184463A · kind A · utility

11Cited by

6References

20Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Ruediger Becker · Murr, DE
Siegfried Boettcher · Oberschleißheim, DE
Andreas Franz · Ludwigsburg, DE

Key dates

Filing date	Sep 20, 1991
Grant date	Feb 9, 1993
Priority date	—
Expiry date	Sep 20, 2011

Classification

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

Abstract

The invention is directed to a method wherein measures are initiated for accelerating the warm-up of the catalyzer even for a warm engine such as after a warm start thereof. In this way and when there is an interruption of operation, the cooling off of the engine and the catalyzer, which takes place at different rates, and the effect thereof on the conversion rate is opposed. As a consequence thereof, the emission of unwanted exhaust-gas components after a warm start is reduced.

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