Patent · US Active

Method for regulating an air-fuel mixture for an internal-combustion engine

US7844388B2 · kind B2 · utility

2Cited by

5References

18Claims

0Family size

Assignee

Bayerische Motoren Werke Aktiengesellschaft · DE

Inventors

Franz Perschl · New Bern, US
Edith Heidi Dumele · Waldkraiburg, DE
Martin Buss · Munich, DE

Key dates

Filing date	Aug 28, 2008
Grant date	Nov 30, 2010
Priority date	—
Expiry date	Feb 12, 2029

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02D2041/1433
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A method of regulating the actual lambda value for an internal-combustion engine of a motor vehicle in a closed control loop is provided. A lambda setpoint is transferred to a controller for influencing an injection calculation for the internal-combustion engine, and an actual lambda value, which occurs at the output of a controlled system as a function of the injection calculation, is returned to the controller. At least one system parameter of the controlled system is determined, and the determined system parameter is transferred to a Smith predictor added to the controller for compensating the influence of the system dead time on the control loop characteristics.

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