Method for running a diesel engine

US6209316A · kind A · utility

Assignee

• Daimlerchrysler AG · US

Inventors

• Frank Duvinage · Kirchheim unter Teck, DE
• Hans Fausten · Bad Sobernheim, DE
• Nicholas M. G. Fekete · Richardson, US
• Anton Kerckhoff · Stuttgart, DE
• Bernd Krutzsch · Köngen, DE
• Thomas Liebscher · Fellbach, DE
• Stefan Pischinger · Aachen, DE
• Michel Weibel · Großburgwedel, DE

Key dates

• Filing date: Nov 5, 1999
• Grant date: Apr 3, 2001
• Expiry date: Nov 5, 2019

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02D2200/0806
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The invention relates to a method of operating a diesel engine having an engine controller which controls the operation of the diesel engine as a function of characteristic maps and permits rich/lean control of the diesel engine. The engine controller includes a computer which effects a changeover to rich or lean operation of the diesel engine as a function of predetermined changeover criteria, a sensor system which communicates with the computer and monitors parameters needed for changeover criteria, and a memory which communicates with the computer and in which the characteristic maps for operating the diesel engine are stored. The computer effects a changeover from lean to rich operation when all the changeover criteria in this respect are satisfied, and effects a change back from rich to lean operation when at least one of the changeover criteria in this respect is satisfied.