Effects of λ on the Combustion Characteristics of HCCI Engine Fueled with N-Butanol

Abstract:

The combustion characteristics of an HCCI engine fueled with n-butanol were investigated on a modified two-cylinder, four stoke diesel engine. The experiments were conducted on the HCCI engine with λ of 2.0, 2.5 and 3.0, and the intake air temperature and engine speed were kept at 140 °C and 1000rpm, respectively. Effects of λ on combustion characteristics including in-cylinder pressure rise rate, heat release rate, CA05 and combustion duration of HCCI combustion engine are discussed in details based on the recorded in-cylinder pressure. The results indicate that in-cylinder pressure and the rate of pressure rise both decrease with the increase of λ, the maximum heat release rate also decreases with the increase of λ but occurs at late crank angles. In addition, as λ increases, the combustion phasing retards and combustion duration becomes longer.

• Periodical: Advanced Materials Research (Volumes 1092-1093)
• Pages: 508-511
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1092-1093.508
• Online since: March 2015
• Authors: Jia Wang Zhou, Chun Hua Zhang, Gang Li, Ye Chun Shen
• Keywords: CA05, Combustion Characteristics, HCCI, N-Butanol, λ

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