Global Patent Index - EP 1076772 A1

EP 1076772 A1 20010221 - FUEL INJECTION NOZZLE FOR AN INTERNAL COMBUSTION ENGINE

Title (en)

FUEL INJECTION NOZZLE FOR AN INTERNAL COMBUSTION ENGINE

Title (de)

KRAFTSTOFFEINSPRITZDÜSE FÜR EINE BRENNKRAFTMASCHINE

Title (fr)

INJECTEUR DE CARBURANT POUR MOTEUR A COMBUSTION INTERNE

Publication

EP 1076772 A1 20010221 (DE)

Application

EP 99924908 A 19990507

Priority

  • DE 19820513 A 19980508
  • EP 9903160 W 19990507

Abstract (en)

[origin: DE19820513A1] The nozzle is used in a common rail injection system and has a needle (11) moved by an actuating device. The needle has a sharp tip (121) extending into a small chamber (110) from which the fuel flows through spray nozzle passages (120). Fuel from the supply flows into a conical portion of the nozzle with a first taper angle (alpha1) of 60 degrees. The needle has a conical portion leading into a portion with a gentle taper (alpha3) of 30-40 degrees followed by a more sharply tapered portion (alpha2) of 58.5 degrees which seals against the tapered bore of the nozzle. There is a groove (19) in the tip, immediately downstream of the sealing portion, facing a matching groove (18) in the bore of the nozzle. A tapering annular chamber (17) leads into the tip chamber.

IPC 1-7

F02M 61/18

IPC 8 full level

F02M 61/18 (2006.01)

CPC (source: EP US)

F02M 61/18 (2013.01 - EP US); F02M 61/1873 (2013.01 - EP US)

Citation (search report)

See references of WO 9958844A1

Designated contracting state (EPC)

DE FR GB IT

DOCDB simple family (publication)

DE 19820513 A1 19991111; DE 59902943 D1 20021107; EP 1076772 A1 20010221; EP 1076772 B1 20021002; US 6427932 B1 20020806; WO 9958844 A1 19991118

DOCDB simple family (application)

DE 19820513 A 19980508; DE 59902943 T 19990507; EP 9903160 W 19990507; EP 99924908 A 19990507; US 67492800 A 20000212