Patent · US Expired

Method for the continuous lambda control of an internal combustion engine having a catalyzer

US5209060A · kind A · utility

3Cited by

7References

4Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Klaus Hirschmann · Leonberg, DE
Lothar Raff · Waiblingen, DE
Eberhard Schnaibel · Hemmingen, DE

Key dates

Filing date	Jul 31, 1991
Grant date	May 11, 1993
Priority date	—
Expiry date	Jul 31, 2011

Classification

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

Abstract

The invention relates to a method for the continuous lambda control of an internal combustion engine 13 having a catalyzer. The method is carried out by generating a control oscillation FS of pregiven amplitude at least in pregiven operating conditions. This method is based on the recognition that with an increase in amplitude of the control oscillation, the conversion window becomes wider insofar as a maximum amplitude is not exceeded. The conversion window is that range of lambda values wherein the conversion exhibits at least a pregiven quality.

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