Journal of the Korean Society of Manufacturing Process Engineers (한국기계가공학회지)

The Korean Society of Manufacturing Process Engineers (한국기계가공학회)
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Evaluation of the Grinding Performance of an Engine Block Honing Stone through Monitoring of Workload and Heat Generation

작업부하 및 발열 모니터링에 의한 엔진블록 호닝스톤 연삭성 평가

  • Yun, Jang-Woo (Powertrain Prototype Development Team, Hyundai Motor Company) ;
  • Kim, Sang-Beom (Research Center, Ehwa Diamond Ind. Co., Ltd.)
  • 윤장우 (현대자동차 파워트레인시작개발팀) ;
  • 김상범 (이화다이아몬드공업 (주) 기술연구소)
  • Received : 2019.03.08
  • Accepted : 2019.03.16
  • Published : 2019.04.30
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Abstract

Since gasoline engines are based on a combination of a cast iron liner and an aluminum block, which have different thermal properties and stiffnesses, bore shape distortion is likely to occur during honing due to uneven thermal deformation. To solve this problem, many tests and evaluations are needed to support the development of a high-performance honing stone with low heat generation. Moreover, performance evaluation, which depends on inspection and observation after work, often requires much trial and error to optimize tool design, due to challenges in the accurate interpretation of results. This study confirmed that the assessment of grinding capability was clarified by evaluating performance under severe work conditions and by in-situ measurement and recording of current consumption (workload) and heat generation during operation. As a result of using a honing stone with excellent grinding performance in engine block manufacture-in which cylinder bore distortion caused by thermal deformation during manufacture is a problem-a noticeable improvement in the degree of cylindricity was observed.

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References

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