Patent · US Expired

Method and apparatus for controlling a high-pressure fuel pumping time in a fuel injection pump

US5201297A · kind A · utility

9Cited by

14References

5Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Ewald Eblen · Stuttgart, DE
Anton Karle · Villingen-Schwenningen, DE
Helmut Laufer · Gerlingen, DE
Max Straubel · Stuttgart, DE

Key dates

Filing date	Aug 31, 1988
Grant date	Apr 13, 1993
Priority date	—
Expiry date	Aug 31, 2008

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02M2200/09
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

It is possible in a simple manner, especially in distributor injection pumps, to attain quiet combustion in the idling range of a Diesel engine, without modifying the basic construction of the fuel injection pump by shifting the injection pumping to the last portion of the stroke of the cam driving the pump piston of the fuel injection pump for idling, by means of an injection onset adjusting device, in combination with a determination of injection duration via the closing phase of an electrically controlled valve that relieves the pump work chamber.

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