Global Patent Index - EP 1156207 A1

EP 1156207 A1 20011121 - Pump for feeding fuel to an internal combustion engine

Title (en)

Pump for feeding fuel to an internal combustion engine

Title (de)

Pumpe zur Brennstoffzufuhr zu einer Brennkraftmaschine

Title (fr)

Pompe pour alimenter en carburant un moteur à combustion interne

Publication

EP 1156207 A1 20011121 (EN)

Application

EP 00830365 A 20000519

Priority

EP 00830365 A 20000519

Abstract (en)

A pump for feeding of fuel an injection system for an internal combustion engine comprising a body (1, 1'), a conduit (16,17) with single-acting valves (14, 15) that extends between a suction inlet (12) and a delivery outlet (13); at least one cylinder (2) made in the body (1, 1') wherein a piston (3) reciprocates capable of pumping fuel into the conduit (17) towards the delivery outlet (13). In the body a first (4) chamber crossed by the conduit (16, 17) and a second chamber (5, 5') are made both flooded by the fuel. The piston (3) reciprocates towards/from the first and second chamber (4-5,5'). The inner diameter of the cylinder (2) exceeds the outer diameter of the pumping piston (3) according to a clearance sufficient to allow a minimum leakage of fuel from the first to the second chamber, whereby the leakage of fuel lubricates the coupling between the piston (3) and the cylinder (2). A channel of return (18) of the leaked fuel is provided between the second chamber and the conduit (16). For operating the piston (3) the second chamber (5) contains a cam mechanism (6,7,8,9) connected to a driven shaft (10). <IMAGE>

IPC 1-7

F02M 37/04; F04B 53/04

IPC 8 full level

F02M 37/04 (2006.01); F04B 53/00 (2006.01); F04B 53/04 (2006.01)

CPC (source: EP)

F02M 37/043 (2013.01); F04B 53/008 (2013.01); F04B 53/04 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

DOCDB simple family (publication)

EP 1156207 A1 20011121

DOCDB simple family (application)

EP 00830365 A 20000519