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1. (WO2001006105) METHOD OF REGULATING THE OPERATIONAL MODE OF AN INTERNAL COMBUSTION ENGINE

Pub. No.:    WO/2001/006105    International Application No.:    PCT/EP2000/006417
Publication Date: Fri Jan 26 00:59:59 CET 2001 International Filing Date: Fri Jul 07 01:59:59 CEST 2000
IPC: F01N 3/08
F02D 41/02
F02D 41/14
Applicants: VOLKSWAGEN AKTIENGESELLSCHAFT
POTT, Ekkehard
LANG, Axel
Inventors: POTT, Ekkehard
LANG, Axel
Title: METHOD OF REGULATING THE OPERATIONAL MODE OF AN INTERNAL COMBUSTION ENGINE
Abstract:
The invention relates to a method of regulating the operational mode of an internal combustion engine. The internal combustion engine is linked with means that allow the regulation of the operational mode by at least temporarily influencing at least one operational parameter of the internal combustion engine. The operational mode is regulated depending on the catalyst temperature of at least one NOx storage catalyst that is located in the waste gas duct of the internal combustion engine. According to the inventive method, the operational mode of the internal combustion engine (16) is adjusted if the catalyst temperature exceeds a definable threshold temperature (GT) depending on at least one operational parameter of the internal combustion engine (16) and/or an effective catalyst state of the NOx storage catalyst (12).