Patent · US Active

Method for regulating the lambda value of an internal combustion engine

US7865294B2 · kind B2 · utility

0Cited by

10References

8Claims

0Family size

Assignee

CONTINENTAL AUTOMOTIVE GMBH · DE

Inventors

Bejoy Mathews · Oberhaching, DE
Gerd Rösel · Dresden, DE
Hong Zhang · Schwieberdingen, DE

Key dates

Filing date	Sep 16, 2005
Grant date	Jan 4, 2011
Priority date	—
Expiry date	Sep 20, 2026

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02D2041/1409
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

The invention relates to a method for regulating the lambda value of an internal combustion engine with a catalytic converter for subsequently treating the exhaust gases of the internal combustion engine, with a binary lambda probe, which is mounted upstream from the catalytic converter and which senses the composition of the exhaust gases. According to the invention, the lambda set value is superimposed with a lean/rich amplitude. This lean/rich amplitude has an integral component and a discontinuous component leading back to the lambda set value. When a change that differs from the change in the exhaust gas composition caused by the lean/rich amplitude is detected, the coefficient of the integral component is modified and/or a discontinuous component is added to the integral component or subtracted therefrom.

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