Development of warm compacted and high temperature sintered P/M sprockets for silent chain system of DIG (Direct Injection Gasoline) automotive engines

Akira Fujiki, Yukihiro Maekawa, Yutaka Mabuchi, Takaya Watanabe, Yoshimi Sugaya, Makoto Iwakiri, Takashi Sibano

Research output: Contribution to journalArticle

Abstract

The authors have previously reported on the warm compacted and normal temperature (1140°C) sintered P/M sprockets of the roller chain system of non-DIG (normal MPI gasoline) engines. In this new development, the mechanical properties of several warm-compacted and high-temperature sintered P/M steels were investigated. A wear test was also conducted to examine the anti-wear characteristics of these material using dummy engines. Finally, sprockets of silent chain system of DIG engines were developed that can endure sever wear conditions. The base powder used was a hybrid material (Distaloy DC1). It was 2mass%Ni (nickel) and was diffusion bonded to pre-alloy Fe-1.5mass%Mo (molybdenum) powder. The warm compaction was conducted with the powder, die and tools at 130°C. The sintering temperature was 1190°C and heat treatment was also applied to the sprockets.

Original languageEnglish
Pages (from-to)438-443
Number of pages6
JournalFuntai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
Volume49
Issue number5
Publication statusPublished - 2002 May
Externally publishedYes

Fingerprint

Sprockets
Direct injection
Powders
Gasoline
Wear of materials
Engines
Rollers (machine components)
Molybdenum
Steel
Hybrid materials
Nickel
Temperature
Compaction
Sintering
Heat treatment
Mechanical properties

ASJC Scopus subject areas

  • Mechanical Engineering
  • Metals and Alloys

Cite this

Development of warm compacted and high temperature sintered P/M sprockets for silent chain system of DIG (Direct Injection Gasoline) automotive engines. / Fujiki, Akira; Maekawa, Yukihiro; Mabuchi, Yutaka; Watanabe, Takaya; Sugaya, Yoshimi; Iwakiri, Makoto; Sibano, Takashi.

In: Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy, Vol. 49, No. 5, 05.2002, p. 438-443.

Research output: Contribution to journalArticle

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