Robert Bosch

Antonio Diaferia

Nello Medoro

Sandra Ranaldo

Josef Guentert

Gerd Loesch

Jochen Aleker

Michael Hackner

Peter Grabert

Christos Hondros

Bernd Frey

Nicola Cimaglia

Bjoern Noack

Charlotte Summerer

Daniel Zander

Paul Wuetherich

Karl-Heinz Linek

Rosanna Iorizzo

Giuseppe Palma

Mauro De Bellis

Angela Mastai

Giuseppe Putignano

Stefano Polito

Ciro Medolla

John Kuesters

Cristina Romita

Antonio De Benedictis

Florian Kleer

The invention relates to a method for operating a fuel injection system () for supplying a combustion engine of a vehicle with fuel, in which method the fuel is conveyed at high pressure with the aid of a high-pressure pump (), fed to a high-pressure accumulator (), and injected into a cylinder of the combustion engine with the aid of at least one injector connected to the high-pressure accumulator (). In order to detect any damage to the drive of the high-pressure pump (), according to the invention The invention further relates to an electronic control unit for carrying out the method.

Method for operating a fuel injection system for supplying a combustion engine with fuel, and electronic control unit

A metering valve for a pump unit for feeding fuel from a tank to an internal combustion engine; the metering valve having: a sleeve having an axis A and provided with a first open end for receiving a thruster, a second opposite end provided with an opening for axially discharging the fuel and at least one side opening for feeding fuel; a plug-shaped piston housed slidably along the axis A inside the sleeve, the piston being provided with a closed end having an outer surface in contact with the thruster, an open opposite end and at least one side opening; a plug housed inside the discharge opening of the sleeve and provided with an axial opening; a spring arranged between the plug and the inner surface of the closed end of the sleeve.

Metering valve for a pump unit for feeding fuel to internal combustion engine and pump unit comprising such a valve

A pump unit for feeding fuel, in particular diesel fuel, to an internal-combustion engine; the pump unit comprising a head () inside which a cylinder () is formed along an axis; a pumping piston () housed inside the cylinder and comprising a head portion () inside the cylinder and an opposite foot portion () projecting outside the cylinder; wherein the piston is slidable inside the cylinder in a reciprocating manner between a first position and a second position where the foot projects from the cylinder by a greater or smaller amount respectively; and wherein the outer surface of the piston comprises a portion () with a surface finish so as to have less friction and a greater lubricant-retaining capacity than the remainder of the outer surface of the piston; the portion extending along the axis between the head of the piston and a first intermediate point () in the first position of the piston, the first intermediate point being inside the cylinder.

Pump unit for feeding fuel to an internal combustion engine

A radial piston pump has a pump housing containing pump elements and whose high-pressure conduits extending in the pump housing are embodied so as to significantly increase the permissible operating pressures.

Radial piston pump for fuel injection system having improved high-pressure resistance

A pump element and a piston pump for generating high fuel pressure are proposed, in which tilting of the piston base relative to a drive shaft is effectively suppressed, so that the service life of the high-pressure fuel pump is increased.

Pump element and piston pump for generating high fuel pressure

Growing community of inventors

Bari, Italy

Antonio Diaferia