Global Patent Index - EP 0749365 A1

EP 0749365 A1 19961227 - A METHOD OF MANUFACTURING A NOZZLE FOR A FUEL VALVE, AND A NOZZLE

Title (en)

A METHOD OF MANUFACTURING A NOZZLE FOR A FUEL VALVE, AND A NOZZLE

Title (de)

VERFAHREN ZUR HERSTELLUNG EINER DÜSE FÜR KRAFTSTOFFVENTIL UND DÜSE

Title (fr)

PROCEDE DE FABRICATION D'UN AJUTAGE POUR CLAPET D'ADMISSION DE CARBURANT ET CET AJUTAGE

Publication

EP 0749365 A1 19961227 (EN)

Application

EP 95911230 A 19950309

Priority

  • DK 9500112 W 19950309
  • DK 28294 A 19940310
  • DK 142994 A 19941213

Abstract (en)

[origin: WO9524286A1] A nozzle (4) for a fuel valve (1) for an internal combustion engine is manufactured by exposing an isotropic finely grained powder in a form having substantially the desired external nozzle shape to a pressure of at least 800 bar and a temperature of at least 1000 DEG C for at least 1 hour, whereupon a flow passage with a number of nozzle holes (5) is machined in the nozzle blank thus HIP-treated. The nozzle may be HIP-treated from a cobalt-based alloy, such as Stellite 6, or a nickel-based alloy comprising 20-30 % of Cr, 4-8 % of Al and 0.2-0.55 % of C and possibly W, Hf, Nb, Mo, Si, Y and/or Fe in amounts of 1.8 %. The HIP-treated nozzle (4) has a substantially greater fatigue strength and is easy to machine into its final shape.

IPC 1-7

B22F 3/15; B22F 5/00; F02M 61/18

IPC 8 full level

B22F 3/14 (2006.01); B22F 3/15 (2006.01); B22F 3/24 (2006.01); B22F 5/00 (2006.01); B22F 5/10 (2006.01); C22C 1/04 (2006.01); C22C 19/05 (2006.01); C22F 1/10 (2006.01); F02M 61/16 (2006.01); F02M 61/18 (2006.01)

CPC (source: EP KR)

B22F 3/15 (2013.01 - KR); B22F 5/10 (2013.01 - EP); C22C 1/0433 (2013.01 - EP); F02M 61/166 (2013.01 - EP); F02M 61/168 (2013.01 - EP); F02M 61/18 (2013.01 - EP)

Citation (search report)

See references of WO 9524286A1

Designated contracting state (EPC)

CH DE GB IT LI NL SE

DOCDB simple family (publication)

WO 9524286 A1 19950914; DE 69502277 D1 19980604; DE 69502277 T2 19980910; EP 0749365 A1 19961227; EP 0749365 B1 19980429; HR P950114 A2 19970228; HR P950114 B1 20000831; JP 3355190 B2 20021209; JP H09509984 A 19971007; KR 100324398 B1 20021018; KR 970701605 A 19970412; NO 314170 B1 20030210; NO 963760 D0 19960909; NO 963760 L 19960909; RU 2124417 C1 19990110

DOCDB simple family (application)

DK 9500112 W 19950309; DE 69502277 T 19950309; EP 95911230 A 19950309; HR P950114 A 19950309; JP 52317395 A 19950309; KR 19960704971 A 19960909; NO 963760 A 19960909; RU 96118497 A 19950309