Patent · US Expired

Fuel injection system

US4073269A · kind A · utility

18Cited by

3References

6Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Harro Herth · Schwieberdingen, DE
Bernd Kraus · Gerlingen, DE
Wilfried Sautter
Wolf Wessel · Oberriexingen, DE

Key dates

Filing date	Aug 19, 1975
Grant date	Feb 14, 1978
Priority date	—
Expiry date	Aug 19, 1995

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02D41/182
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A fuel injection system for an internal combustion engine includes electromagnetic injection valves controlled by a fuel control unit which receives signals from a camshaft actuated switch, a position-dependent throttle transducer and an oxygen sensor. When the oxygen sensor changes output levels, the transmission of this information is delayed, by the action of a switching transistor controlled by a monostable multivibrator, for a period of time equal to the internal time constant of the multivibrator.

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