Patent · US Expired

Method for operating an internal combustion engine

US7500465B2 · kind B2 · utility

4Cited by

2References

29Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Andreas Pfaeffle · Löwenstein, DE
Marco Gangi · Eßlingen, DE
Gerit Von Schwertfuehrer · Ludwigsburg, DE

Key dates

Filing date	Aug 18, 2005
Grant date	Mar 10, 2009
Priority date	—
Expiry date	Sep 1, 2025

Classification

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

Abstract

A method for operating an internal combustion engine, in which fuel is injected into a combustion chamber of a cylinder of the internal combustion engine in at least two partial injections, and in which an actual torque supplied by the internal combustion engine is ascertained from operating variables of the internal combustion engine, this actual torque being compared to an admissible torque, and an error response being initiated if the actual torque is at a predefined ratio to the admissible torque. In the ascertainment of the actual torque, taking into consideration a torque efficiency of the respective partial injection is provided, whereby a more accurate monitoring of the actual torque is made possible.

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