Patent · US Expired

System for controlling an internal combustion engine

US5146886A · kind A · utility

9Cited by

4References

26Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Erik Mannle · Oberkirch, DE
Bernd Lieberoth-Leden · Leonberg, DE
Wolfgang Maisch · Schwieberdingen, DE

Key dates

Filing date	Feb 7, 1991
Grant date	Sep 15, 1992
Priority date	—
Expiry date	Feb 7, 2011

Classification

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

Abstract

A method for controlling an internal combustion engine is proposed, in particular in conjunction with control systems for engine power, in which, in order to avoid potentiometer failures due to deposits of insulating abraded material on the potentiometer track due to the movement of a positioning component, in particular a throttle flap, in overrun operation, with released accelerator pedal and above a pregiven resume engine speed where there is fuel cutoff, the positioning component is briefly moved out of its fixed position or is closed beyond its pregiven idle position. On reaching a certain position for upon renewed fuel supply due to the engine speed falling below the resume engine speed, the positioning component is abruptly reset to its fixed position.

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