Patent · US Expired

Distributor-type fuel injection pump

US6280160A · kind A · utility

2Cited by

11References

20Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Heinz Nothdurft · Stuttgart, DE
Nestor Rodriguez-Amaya · Stuttgart, DE
Andreas Dutt · Stuttgart, DE
Hubert Greif · Markgröningen, DE

Key dates

Filing date	Dec 9, 1999
Grant date	Aug 28, 2001
Priority date	—
Expiry date	Dec 9, 2019

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02M41/1411
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A fuel injection pump of the distributor type which has a reciprocatingly driven pump piston that is load-bearing in a rotating distributor shaft which pumps fuel out of a pump work chamber to various fuel injection valves via a distributor opening. To control the duration of high-pressure injection, an electrically actuated valve is provided with a valve member in a valve chamber that communicates with the pump work chamber and from a second valve chamber, communicates with a low-pressure region. To terminate the high-pressure injection, the valve member makes a communication between the two valve chambers, whereupon the outflow of the fuel stream is controlled by disposing a diameter constriction in the connecting line, thus reducing any tendency to cavitation.

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