Robert Boschgmbh

Marco Lamm

Friedrich Boecking

Andreas Dutt

Achim Koehler

Walter Fuchs

Sascha Ambrock

Nello Medoro

Christian Langenbach

Dietmar Ottenbacher

Joerg Wuerz

Marcus Kristen

Manuel Tavani

Carsten Tuechert

Bertram Schweitzer

Saban Akmese

Karl-Heinz Traub

Ruggiero Gissi

The invention relates to a high pressure pump for a fuel injection system, in particular a common rail injection system, comprising a housing part () with a bore (), in which a pump piston () is received such that it can be moved with a reciprocating movement, which pump piston () is supported via a tappet assembly () on a cam () or eccentric and delimits a pump working chamber () in the axial direction, which pump working chamber () can be filled with fuel via an upstroke valve () which is integrated into the high pressure pump. According to the invention, a feed bore () is configured in the housing part () in order to supply the upstroke valve () with fuel, which feed bore () is connected to a bore () of a further housing part (), which bore () connects a pump interior chamber () and a tappet chamber ().

High pressure pump for a fuel injection system

A system () for feeding fuel from a tank () to an internal combustion engine () has:&#x2014;an electrically actuated pre-feed variable-flow electric pump (); &#x2014;a high-pressure piston pump () having a pump casing () and piston movement mechanism () housed in the pump casing (); and&#x2014;a hydraulic circuit () comprising a first branch () for connecting the tank () to the pre-feed pump (), a second branch () for connecting the pre-feed pump () to the high-pressure piston pump () and a third branch () for connecting the high-pressure piston pump () to the internal combustion engine (); wherein the second branch () is configured to branch downstream of the pre-feed pump () into a first channel () structured for conveying part of the fuel to the intake of the high-pressure piston pump () and for connecting the pre-feed pump () directly to the intake of the high-pressure piston pump (), and into a second channel () structured for conveying part of the fuel in the casing () and for connecting the pre-feed pump () to the casing () making the fuel flow solely through at least one calibrated hole ().

System for feeding fuel from a tank to an internal combustion engine

The invention relates to a high-pressure fuel pump comprising a drive shaft supported by bearings, and fuel flows through the bearings in a forced manner in such a way that the mechanical and thermal load-carrying capacity of the bearings, and thus the entire high-pressure fuel pump, is significantly increased.

Fuel injection system for an internal combustion engine

Growing community of inventors

Leonberg, Germany

Marco Lamm