Global Patent Index - EP 0347581 B1

EP 0347581 B1 19930203 - INJECTION PUMP FOR INTERNAL-COMBUSTION ENGINES

Title (en)

INJECTION PUMP FOR INTERNAL-COMBUSTION ENGINES

Publication

EP 0347581 B1 19930203 (DE)

Application

EP 89108890 A 19890518

Priority

DE 3820707 A 19880618

Abstract (en)

[origin: JPH0237166A] PURPOSE: To ensure a predetermined relatively high pressure to be the end control pressure by having a pressure maintenance valve arranged in a reservoir chamber to function as the valve that opens away from the reservoir chamber. CONSTITUTION: A plunger 1 is supported in a casing 3 which has a suction chamber 4. Fuel is delivered into the suction chamber via a pipe joint member 5, and excess fuel is discharged from the suction chamber. A plunger 2 closes a control hole 7 by means of an upper edge 6 thereof during the lift process of the plunger. Before that, fuel pressure is already formed by the lift of the plunger 2 in a reservoir chamber 9 for throttling the fuel displaced from a pump chamber 8. A collection chamber is formed as the reservoir chamber 9 having a pressure maintenance valve 11. The pressure maintenance valve 11 is formed as the valve that opens away from the reservoir chamber 9.

IPC 1-7

F02M 55/00; F02M 59/44; F02M 59/46

IPC 8 full level

F02M 59/26 (2006.01); F02M 55/00 (2006.01); F02M 55/04 (2006.01); F02M 59/44 (2006.01); F02M 59/46 (2006.01)

CPC (source: EP US)

F02M 55/001 (2013.01 - EP US); F02M 55/04 (2013.01 - EP US); F02M 59/46 (2013.01 - EP US); F02M 63/005 (2013.01 - EP US)

Designated contracting state (EPC)

DE FR GB IT

DOCDB simple family (publication)

EP 0347581 A1 19891227; EP 0347581 B1 19930203; DE 3820707 A1 19891221; DE 58903432 D1 19930318; JP 2721243 B2 19980304; JP H0237166 A 19900207; US 5015160 A 19910514

DOCDB simple family (application)

EP 89108890 A 19890518; DE 3820707 A 19880618; DE 58903432 T 19890518; JP 15479889 A 19890619; US 33322089 A 19890405