Patent · US Expired

Fuel injection pump for internal combustion engines

US4448167A · kind A · utility

7Cited by

4References

6Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Werner Schmid · Heidenheim, DE
Karl Rapp · Stuttgart, DE

Key dates

Filing date	Jul 29, 1982
Grant date	May 15, 1984
Priority date	—
Expiry date	Jul 29, 2002

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02M59/265
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A fuel injection pump, embodied as a series pump, has a governor rod for rotating a pump piston provided with an oblique control groove. The pump piston further has at least one longitudinal groove, by means of which upon congruence with a fill and relief opening of the pump work chamber, a zero fuel supply can be established. With electrically controlled actuation of the governor rod, the appropriate adjustment of the end stops of the governor rod or the appropriate embodiment of the pump piston assures that the opening comes into congruence with a longitudinal groove adjoining the full-load working zone of the pump piston before the end stop of the governor rod is reached.

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