Patent · US Expired

Method and device for operating an internal combustion engine having exhaust-gas recirculation

US7146268B2 · kind B2 · utility

4Cited by

3References

9Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Ernst Wild · Oberriexingen, DE
Michael Drung · Rochlitz, DE
Rainer Hild · Heubach, DE

Key dates

Filing date	Jul 13, 2005
Grant date	Dec 5, 2006
Priority date	—
Expiry date	Jul 13, 2025

Classification

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

Abstract

A method and a device for operating an internal combustion engine having exhaust-gas recirculation are provided, which make it possible to dispense with an ambient-pressure sensor. In this context, an intake-manifold pressure and an ambient pressure are modeled. The intake-manifold pressure is modeled as a function of the modeled ambient pressure. The intake-manifold pressure is also measured. The modeled intake-manifold pressure is compared to the measured intake-manifold pressure. The modeled ambient pressure is adapted as a function of the comparison result. The modeled ambient pressure is adapted only when the exhaust-gas recirculation is inactive.

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