(19)
(11) EP 1 750 005 A8

(12) CORRECTED EUROPEAN PATENT APPLICATION
Note: Bibliography reflects the latest situation

(15) Correction information:
Corrected version no 1 (W1 A1)

(48) Corrigendum issued on:
09.05.2007 Bulletin 2007/19

(43) Date of publication:
07.02.2007 Bulletin 2007/06

(21) Application number: 06016032.2

(22) Date of filing: 01.08.2006
(51) International Patent Classification (IPC): 
F02M 51/06(2006.01)
F02M 69/14(2006.01)
 F02M 69/04(2006.01)
F02M 21/02(2006.01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
Designated Extension States:
AL BA HR MK YU

(30) Priority: 04.08.2005 JP 2005227115

(71) Applicant: Keihin Corporation
Shinjuku-ku, Tokyo (JP)

(72) Inventors:
  • Nakajima, Yoji
    Kakuda, Kakuda-shi, Miyagi (JP)
  • Takiguchi, Naoto
    Kakuda, Kakuda-shi, Miyagi (JP)
  • Yoshida, Takashi
    Kakuda, Kakuda-shi, Miyagi (JP)

(74) Representative: Prechtel, Jörg et al
Weickmann & Weickmann Patentanwälte Postfach 86 08 20
81635 München
81635 München (DE)

   


(54) Gaseous fuel injection valve


(57) A gaseous fuel injection valve includes: a valve housing; a metallic nozzle member having a flat valve seat and a nozzle bore passing through a central portion of the valve seat; a valve body provided at one end face with a rubber seating member which is operated in cooperation with the valve seat; a coil; and a return spring for urging the valve body toward the valve seat. A stationary core attracts the valve body to move the seating member away form the valve seat, when the coil is excited. In this injection valve, a flourine resin valve seat coating is formed on the valve seat so that the seating members brought into close contact with the valve seat coating. Thus, an oil-repellent property of the valve seat coating is provided to the valve seat to prevent adherence of oil to the valve seat, leading to an improvement in valve-opening response of the valve body upon the excitation of the coil.