Patent · US Expired

Fuel injection system

US4250848A · kind A · utility

1Cited by

4References

9Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Wolf Wessel · Oberriexingen, DE
Gerhard Stumpp · Stuttgart, DE
Volkhard Stein · Stuttgart, DE

Key dates

Filing date	Jan 17, 1979
Grant date	Feb 17, 1981
Priority date	—
Expiry date	Jan 17, 1999

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02M69/22
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A fuel injection system for controlling a mixture-compressing, externally ignited internal combustion engine which includes a fuel apportionment valve controllable by means of an air flow rate meter, with the fuel pressure upstream of the apportionment point being variable by means of a pressure regulating valve having a movable valve member which separates two chambers connected by a throttle point, and wherein the fuel pressure upstream of the fuel apportionment valve is exerted on one side of the movable valve member, and the force of a spring and a control pressure, which is variable by means of a control element in accordance with operating characteristics of the internal combustion engine, are exerted on the other side of the movable valve member to thereby intervene easily in order to vary the fuel-air mixture using small control forces.

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