Abrasive Wear Characteristics of Materials for Diesel Engine Cylinder Liner and Piston Ring

디젤엔진 실린더 라이너-피스톤 링 소재의 연삭 마멸 특성

  • Jang, Jeong-Hwan (Department of Mechanical and Precision Engineering, Engineering Research Center for Net Shape and Die Manufacturing, Pusan National University) ;
  • Kim, Jung-Hoon (Research & Development Center, Doosan Engine) ;
  • Kim, Chang-Hee (Research & Development Center, Doosan Engine) ;
  • Moon, Young-Hoon (Department of Mechanical and Precision Engineering, Engineering Research Center for Net Shape and Die Manufacturing, Pusan National University)
  • 장정환 (부산대학교 정밀기계공학과 정밀정형 및 금형가공 연구소) ;
  • 김정훈 (두산엔진(주) 기술연구소) ;
  • 김창희 (두산엔진(주) 기술연구소) ;
  • 문영훈 (부산대학교 정밀기계공학과 정밀정형 및 금형가공 연구소)
  • Received : 2007.02.05
  • Accepted : 2007.02.23
  • Published : 2007.03.30

Abstract

Abrasive wear between piston ring face and cylinder liner is an extremely unpredictable and hard-to-reproduce phenomenon that significantly decreases engine performance. Wear by abrasion are forms of wear caused by contact between a particle and solid material. Abrasive wear is the loss of material by the passage of hard particles over a surface. From the pin-on-disk test, particle dent test and scuffing test, abrasive wear characteristics of diesel engine cylinder liner-piston ring have been investigated. Pin-on-disk test results indicate that abrasive wear resistance is not simply related to the hardness of materials, but is influenced also by the microstructure, temperature, lubricity and micro- fracture properties. In particle dent test, dent resistance stress decreases with increasing temperature. From the scuffing test by using pin-on-disk tester, scuffing mechanisms for the soft coating and hard coating were proposed and experimentally confirmed.

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