Patent · US Expired

Method and apparatus for controlling the overrun mode of operation of an internal combustion engine

US4644922A · kind A · utility

7Cited by

10References

14Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Otto Glockler · Renningen, DE
Dieter Gunther · Steinheim an der Murr, DE
Ulrich Steinbrenner · Kohlhof, DE

Key dates

Filing date	Oct 22, 1985
Grant date	Feb 24, 1987
Priority date	—
Expiry date	Oct 22, 2005

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02B1/04
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

The invention is directed to a method and an apparatus for controlling the overrun mode of operation of an internal combustion engine, wherein instantaneous values of the relevant negative speed change of the internal combustion engine are sensed and evaluated to control the overrun mode. In this arrangement, a higher resume speed which is selected on commencement of the overrun mode and reduced to a lower speed limit after a predetermined time function, can be shifted additionally in dependence on the negative speed change. Further, to keep an internal combustion engine from stalling, the actual value of the negative speed change can be compared with a predetermined desired value; if it exceeds that value, the decision for a resume of fuel delivery can be made without delay.

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