Analysis and control of cyclic dispersion in an HCCI engine

Kenichiro Nagai; Chao Shi; Norimasa Iida

doi:10.1299/kikaib.76.764_691

Analysis and control of cyclic dispersion in an HCCI engine

Kenichiro Nagai, Chao Shi, Norimasa Iida

Department of System Design Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

Homogeneous Charge Compression Ignition (HCCI) engine has the potential to achieve lower NO_x and PM emissions with high thermal efficiency. Although it has these merits, operation region is still limited by knocking. Combustion phasing retard is one of the methods to avoid knocking. However, excessive retard of CA50 will lead to unstable combustion. In this study, we developed a combustion control system for HCCI engine fuelled with DME. The cyclic dispersion mechanism on the excessive retard of CA50 was analyzed. And the controlling road map for reducing combustion variations was obtained. Based on these results, reduction of cyclic dispersion is realized by combustion control.

Original language	English
Pages (from-to)	691-698
Number of pages	8
Journal	Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Volume	76
Issue number	764
DOIs	https://doi.org/10.1299/kikaib.76.764_691
Publication status	Published - 2010 Apr

Keywords

Alternative energy
Cyclic dispersion
DME
EGR
Hcci engine
Internal combustion engine
Premixed combustion

ASJC Scopus subject areas

Condensed Matter Physics
Mechanical Engineering

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title = "Analysis and control of cyclic dispersion in an HCCI engine",

abstract = "Homogeneous Charge Compression Ignition (HCCI) engine has the potential to achieve lower NOx and PM emissions with high thermal efficiency. Although it has these merits, operation region is still limited by knocking. Combustion phasing retard is one of the methods to avoid knocking. However, excessive retard of CA50 will lead to unstable combustion. In this study, we developed a combustion control system for HCCI engine fuelled with DME. The cyclic dispersion mechanism on the excessive retard of CA50 was analyzed. And the controlling road map for reducing combustion variations was obtained. Based on these results, reduction of cyclic dispersion is realized by combustion control.",

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AU - Shi, Chao

AU - Iida, Norimasa

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AB - Homogeneous Charge Compression Ignition (HCCI) engine has the potential to achieve lower NOx and PM emissions with high thermal efficiency. Although it has these merits, operation region is still limited by knocking. Combustion phasing retard is one of the methods to avoid knocking. However, excessive retard of CA50 will lead to unstable combustion. In this study, we developed a combustion control system for HCCI engine fuelled with DME. The cyclic dispersion mechanism on the excessive retard of CA50 was analyzed. And the controlling road map for reducing combustion variations was obtained. Based on these results, reduction of cyclic dispersion is realized by combustion control.

KW - Alternative energy

KW - Cyclic dispersion

KW - DME

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KW - Hcci engine

KW - Internal combustion engine

KW - Premixed combustion

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