Influence of charge constituents on the cycle-by-cycle variations of DME HCCI engine

Kazuhiko Yamashita, Dongwon Jung, Norimasa Iida

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Homogeneous Charge Compression Ignition (HCCI) engine has the potential to achieve lower NOx and PM emissions with high thermal efficiency. However the operation region is limited by knocking. Combustion phasing retard is one of the methods to avoid knocking. However, excessive retard happen unstable combustion. This study explores how the cycle-by-cycle variations of HCCI engine are affected by charge constituents, which includes air, fuel, cold EGR and re-breathing EGR (hot EGR). The engine was fueled with Dimethyle Ether (DME). The experiments were conducted in a single-cylinder HCCI engine equipped with two-stage exhaust cam for re-breathing EGR and four throttle valves. In this study, it is important to detect each gas volume and temperature every cycle because combustion phasing depends on the in-cylinder mass averaged temperature. Therefore the engine included fast-response sheath thermo couples located near the exhaust valve to quickly measure the exhaust gas temperature and re-breathing EGR temperature and fast-response laminar flow meter to measure cycle-to-cycle intake air and cold EGR flow rate.

Original languageEnglish
Title of host publicationProceedings of the 8th International Conference on Modeling and Diagnostics for Advanced Engine Systems, COMODIA 2012
Pages84-89
Number of pages6
Publication statusPublished - 2012
Event8th International Conference on Modeling and Diagnostics for Advanced Engine Systems, COMODIA 2012 - Fukuoka, Japan
Duration: 2012 Jul 232012 Jul 26

Other

Other8th International Conference on Modeling and Diagnostics for Advanced Engine Systems, COMODIA 2012
CountryJapan
CityFukuoka
Period12/7/2312/7/26

Fingerprint

Ignition
Ethers
Engine
Compression
Charge
Engines
Cycle
Combustion
Engine cylinders
Temperature
Air intakes
Cams
Laminar Flow
Exhaust gases
Laminar flow
Flow Rate
Unstable
Flow rate
Influence
Air

Keywords

  • Cycle-by-cycle variation
  • Dimethyl ether (DME)
  • Exhaust gas recirculation (EGR)
  • Homogeneous charge compression ignition (HCCI)
  • Re-breathing

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Modelling and Simulation

Cite this

Yamashita, K., Jung, D., & Iida, N. (2012). Influence of charge constituents on the cycle-by-cycle variations of DME HCCI engine. In Proceedings of the 8th International Conference on Modeling and Diagnostics for Advanced Engine Systems, COMODIA 2012 (pp. 84-89)

Influence of charge constituents on the cycle-by-cycle variations of DME HCCI engine. / Yamashita, Kazuhiko; Jung, Dongwon; Iida, Norimasa.

Proceedings of the 8th International Conference on Modeling and Diagnostics for Advanced Engine Systems, COMODIA 2012. 2012. p. 84-89.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Yamashita, K, Jung, D & Iida, N 2012, Influence of charge constituents on the cycle-by-cycle variations of DME HCCI engine. in Proceedings of the 8th International Conference on Modeling and Diagnostics for Advanced Engine Systems, COMODIA 2012. pp. 84-89, 8th International Conference on Modeling and Diagnostics for Advanced Engine Systems, COMODIA 2012, Fukuoka, Japan, 12/7/23.
Yamashita K, Jung D, Iida N. Influence of charge constituents on the cycle-by-cycle variations of DME HCCI engine. In Proceedings of the 8th International Conference on Modeling and Diagnostics for Advanced Engine Systems, COMODIA 2012. 2012. p. 84-89
Yamashita, Kazuhiko ; Jung, Dongwon ; Iida, Norimasa. / Influence of charge constituents on the cycle-by-cycle variations of DME HCCI engine. Proceedings of the 8th International Conference on Modeling and Diagnostics for Advanced Engine Systems, COMODIA 2012. 2012. pp. 84-89
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