A Research of Variable Valve Control Strategies Using a Supercharged Single-cylinder Heavy Duty Diesel Engine

大型単気筒過給エンジンを用いた可変バルブ制御の効果の検討

This study is to clarify the effect of the optimum compression and expansion ratio control on the thermal efficiency by variable valve timings with a single-cylinder heavy duty diesel engine equipped with external supercharging system. Test was done in various combinations of effective compression and expansion ratio. In conclusion, it is confirmed that improvement in the gross indicated thermal efficiency by increasing effective expansion ratio at fixed and relatively lower effective compression ratio than expansion ratio. Brake thermal efficiency was further improved with the cavity having higher geometrical compression ratio than the baseline having 18.0 of compression ratio.前報において最高筒内圧の制約から可変バルブ制御を用いて有効圧縮比の低減より最高筒内圧の低減効果を得たが，膨張比固定の有効圧縮比低減は理論熱効率の低下を招く．そこで単気筒過給エンジンで可変バルブ制御を用いて幾何圧縮比を増加させ，有効圧縮比固定での高膨張比化による熱効率改善の可能性を検討した．

• Record URL:
  • https://doi.org/10.11351/jsaeronbun.45.203
• Record URL:
  • http://scholar.google.com/scholar_lookup?title=A%20Research%20of%20Variable%20Valve%20Control%20Strategies%20Using%20a%20Supercharged%20Single-cylinder%20Heavy%20Duty%20Diesel%20Engine&author=A.%20Fukunaga&author=H.%20Osada&author=K.%20Shimada&author=T.%20Okamoto&author=N.%20Uchida&publication_year=2014
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/02878321
• Authors:
  • Fukunaga, Akira
  • Osada, Hideaki
  • Shimada, Kazuaki
  • Okamoto, Takeshi
  • Uchida, Noboru
• Publication Date: 2014-3

Language

• English
• Japanese

Media Info

• Media Type: Digital/other
• Features: Figures; References; Tables;
• Pagination: pp 203-208
• Serial:
  • Transactions of Society of Automotive Engineers of Japan
  • Volume: 45
  • Issue Number: 2
  • Publisher: Society of Automotive Engineers of Japan
  • ISSN: 0287-8321
  • EISSN: 1883-0811
  • Serial URL: https://www.jstage.jst.go.jp/browse/jsaeronbun
• Publication flags:

  Open Access (libre)

Subject/Index Terms

• TRT Terms: Compression ignition engines; Diesel engines; Expansion; Fuel conservation; Fuel consumption; Heat engines; Heavy duty vehicles; Superchargers; Thermal efficiency; Valve timing
• Uncontrolled Terms: Compression ratio
• Subject Areas: Energy; Highways; Vehicles and Equipment;

Filing Info

• Accession Number: 01667923
• Record Type: Publication
• Source Agency: Japan Science and Technology Agency (JST)
• Files: TRIS, JSTAGE
• Created Date: May 1 2018 12:05PM