Patent · US Expired

Apparatus for regulating the idling rpm of internal combustion engines

US4441471A · kind A · utility

30Cited by

7References

10Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Alfred Kratt · Schwieberdingen, DE
Bernd Kraus · Gerlingen, DE
Gunther Plapp · Echterdingen, DE

Key dates

Filing date	Oct 19, 1981
Grant date	Apr 10, 1984
Priority date	—
Expiry date	Oct 19, 2001

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02D41/086
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

An apparatus is proposed for regulating the idling rpm of internal combustion engines with externally supplied ignition. The apparatus includes a comparison circuit for set-point and actual rpm, and the idling rpm set-point value can be influenced in accordance with the actual rpm, time, operating voltage, temperature, and other variables as needed. The actual regulation is effected by means of a PID-regulator, whose individual characteristics may be established for processing data as desired, preferably in accordance with the rpm deviation. A limitation regulator furthermore serves to establish the respective maximum and/or minimum limitation of the adjustment member in accordance with operating characteristics.

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