Kinematic synthesis of variable compression ratio engine mechanism

Young Kwang Mo, Jae Kyung Shim, Min Seok Jo

Research output: Contribution to conferencePaper

Abstract

Rising interest in automotive exhaust gas problems has triggered active researches on eco-friendly automobiles. A variable compression ratio (VCR) engine is one of the eco-friendly automotive technologies. The VCR engine increases compression ratio at low load region to improve thermal efficiency, while it decreases compression ratio in high load region to prevent knocking, which can decrease exhaust emissions and increase fuel-economy. In this paper, a new variable compression ratio engine mechanism with multiple joints is developed via a systematic kinematic approach. For this, the kinematic graphs of mechanisms wiht 7 links and 8 joints are enumerated and the most sitable mechanisms are selected. By mering the joints, a new VCR engine mechanism type is proposed and analyzed.

Original languageEnglish
Publication statusPublished - 2016 Jan 1
Event36th FISITA World Automotive Congress, 2016 - Busan, Korea, Republic of
Duration: 2016 Sep 262016 Sep 30

Other

Other36th FISITA World Automotive Congress, 2016
CountryKorea, Republic of
CityBusan
Period16/9/2616/9/30

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Keywords

  • Degrees of freedom
  • Dimensional synthesis
  • Graph theory
  • Type synthesis
  • Variable compression ratio engine

ASJC Scopus subject areas

  • Automotive Engineering
  • Safety, Risk, Reliability and Quality

Cite this

Mo, Y. K., Shim, J. K., & Jo, M. S. (2016). Kinematic synthesis of variable compression ratio engine mechanism. Paper presented at 36th FISITA World Automotive Congress, 2016, Busan, Korea, Republic of.