Global Patent Index - EP 1252431 A2

EP 1252431 A2 20021030 - METHOD FOR OPERATING A PRESUPPLY PUMP OF A FUEL METERING SYSTEM AND FUEL METERING SYSTEM OF A DIRECT INJECTION INTERNAL COMBUSTION ENGINE

Title (en)

METHOD FOR OPERATING A PRESUPPLY PUMP OF A FUEL METERING SYSTEM AND FUEL METERING SYSTEM OF A DIRECT INJECTION INTERNAL COMBUSTION ENGINE

Title (de)

VERFAHREN ZUM BETRIEB EINER VORFÖRDERPUMPE EINES KRAFTSTOFFZUMESSSYSTEMS UND KRAFTSTOFFZUMESSSYSTEM EINER DIREKTEINSPRITZENDEN BRENNKRAFTMASCHINE

Title (fr)

PROCEDE POUR FAIRE FONCTIONNER UNE POMPE DE PRE-ALIMENTATION D'UN SYSTEME DOSEUR DE CARBURANT, ET SYSTEME DOSEUR DE CARBURANT D'UN MOTEUR A COMBUSTION INTERNE A INJECTION DIRECTE

Publication

EP 1252431 A2 20021030 (DE)

Application

EP 01909439 A 20010110

Priority

  • DE 0100059 W 20010110
  • DE 10001882 A 20000119

Abstract (en)

[origin: WO0153686A2] The invention relates to a method for operating a presupply pump (1) of a fuel metering system of a direct injection internal combustion engine. In addition to the presupply pump (1), the fuel metering system has a high pressure pump (2), the presupply pump (1) pumping fuel into a low pressure area (LP) of the fuel metering system and the high pressure pump (2) pumping fuel out of the low pressure area (LP) and into a high-pressure area (HD) of the fuel metering system. According to the invention, the presupply pump (1) is controlled in such a way that it is regulated according to the requirements, so that the flow being transported through the presupply pump (1) corresponds approximately to the flow being transported through the high pressure pump (1) and a predetermined pressure is present in the low pressure area (ND), in order to reduce the appearance of cavitation in the high pressure pump (2).

IPC 1-7

F02M 37/08; F02D 41/30; F02M 59/36; F02M 63/02

IPC 8 full level

F02D 41/30 (2006.01); F02D 41/38 (2006.01); F02M 37/08 (2006.01); F02M 55/00 (2006.01); F02M 59/36 (2006.01); F02M 63/02 (2006.01)

CPC (source: EP)

F02D 41/3082 (2013.01); F02D 41/3854 (2013.01); F02M 55/00 (2013.01); F02M 63/0225 (2013.01); F02D 41/3836 (2013.01)

Citation (search report)

See references of WO 0153686A3

Designated contracting state (EPC)

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

DOCDB simple family (publication)

WO 0153686 A2 20010726; WO 0153686 A3 20020207; AU 3721201 A 20010731; DE 10001882 A1 20010802; DE 50100679 D1 20031030; EP 1252431 A2 20021030; EP 1252431 B1 20030924

DOCDB simple family (application)

DE 0100059 W 20010110; AU 3721201 A 20010110; DE 10001882 A 20000119; DE 50100679 T 20010110; EP 01909439 A 20010110