Patent · US Active

Exhaust temperature based control strategy for balancing cylinder-to-cylinder fueling variation in a combustion engine

US7591258B2 · kind B2 · utility

5Cited by

9References

29Claims

0Family size

Assignee

Caterpillar Motoren GmbH & Co. KG · DE

Inventors

Juergen Nagel · Bad Kreuznach, DE
Bert Ritscher · Altenholz, DE
Alan R. Schroeder · Kiel, DE

Key dates

Filing date	Jun 13, 2007
Grant date	Sep 22, 2009
Priority date	—
Expiry date	Jul 11, 2027

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02D41/3809
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

The present disclosure provides a control strategy for balancing injector-to-injector fueling variations for a combustion engine having multiple combustion chambers (and cylinders), with multiple individually actuated injectors for injecting fuel into the combustion chambers, wherein at least one injector is assigned to each combustion chamber and a common rail supplies fuel to the multiple injectors. The method includes changing the actuation waveform of an injector assigned to a combustion chamber having an exhaust gas temperature deviating by more than the predetermined value from the average exhaust gas temperature, in order to change the amount of fuel injected.

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