(19)
(11) EP 0 424 109 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
02.10.1991 Bulletin 1991/40

(43) Date of publication A2:
24.04.1991 Bulletin 1991/17

(21) Application number: 90311345.4

(22) Date of filing: 17.10.1990
(51) International Patent Classification (IPC)5: B22F 3/24, F02F 1/20, B22D 19/00
(84) Designated Contracting States:
DE FR GB IT SE

(30) Priority: 18.10.1989 JP 271124/89
18.10.1989 JP 271125/89

(71) Applicant: IZUMI INDUSTRIES, LTD.
Kawagoe-shi, Saitama-ken (JP)

(72) Inventors:
  • Suzuki, Yoshihiro
    Kitaadachi-gun, Saitama-ken (JP)
  • Ogiwara, Toshio
    Gyoda-shi, Saitama-ken (JP)
  • Kudo, Masaaki
    Kumagaya-shi, Saitama-ken (JP)

(74) Representative: Price, Paul Anthony King et al
D. Young & Co., 21 New Fetter Lane
London EC4A 1DA
London EC4A 1DA (GB)


(56) References cited: : 
   
       


    (54) Aluminium alloy matrix composite for internal combustion engines


    (57) An aluminium alloy matrix composite for internal combustion engine is disclosed, which is strengthened by porous metal 3 containing chromium, and oil pockets 12, 13, 14, 22, 23 are formed on the exposed surface 11 by lapping or etching, thereby improving wear resistance and lubricancy.





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