Patent · US Expired

Method and device for operating an internal combustion engine

US6659083B2 · kind B2 · utility

9Cited by

3References

7Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Hermann Gaessler · Leinfelden, DE
Udo Diehl · Stuttgart, DE
Karsten Mischker · Leonberg, DE
Rainer Walter · Pleidelsheim, DE
Bernd Rosenau · Asperg, DE
Juergen Schiemann · Markgröningen, DE
Christian Grosse · Kornwestheim, DE
Georg Mallebrein · Stuttgart, DE
Volker Beuche · Stuttgart, DE
Stefan Reimer · Markgröningen, DE

Key dates

Filing date	May 14, 2002
Grant date	Dec 9, 2003
Priority date	—
Expiry date	May 14, 2022

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/12
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A method and a device for operating an internal combustion engine including a plurality of cylinders, determine whether a torque of the internal combustion engine is above a torque threshold value. If the torque is less than the torque threshold value, all the cylinders of the engine are operated in a lean operating state. If the torque is greater than or equal to the torque threshold value, a first number of cylinders of the engine is operated in a homogeneous operating state, and the remaining cylinders of the engine are operated in the lean operating state.

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