Experimental Research on Controllability and Emissions of Jet-Controlled Compression Ignition Engine

Hua Tian, Jingchen Cui, Tianhao Yang, Yao Fu, Jiangping Tian and Wuqiang Long
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Hua Tian: School of Energy and Power Engineering, Dalian University of Technology, Dalian 116024, China
Jingchen Cui: School of Energy and Power Engineering, Dalian University of Technology, Dalian 116024, China
Tianhao Yang: School of Energy and Power Engineering, Dalian University of Technology, Dalian 116024, China
Yao Fu: School of Energy and Power Engineering, Dalian University of Technology, Dalian 116024, China
Jiangping Tian: School of Energy and Power Engineering, Dalian University of Technology, Dalian 116024, China
Wuqiang Long: School of Energy and Power Engineering, Dalian University of Technology, Dalian 116024, China

Energies, 2019, vol. 12, issue 15, 1-14

Abstract: Low-temperature combustions (LTCs), such as homogeneous charge compression ignition (HCCI), could achieve high thermal efficiency and low engine emissions by combining the advantages of spark-ignited (SI) engines and compression-ignited (CI) engines. Robust control of the ignition timing, however, still remains a hurdle to practical use. A novel technology of jet-controlled compression ignition (JCCI) was proposed to solve the issue. JCCI combustion phasing was controlled by hot jet formed from pre-chamber spark-ignited combustion. Experiments were done on a modified high-speed marine engine for JCCI characteristics research. The JCCI principle was verified by operating the engine individually in the mode of JCCI and in the mode of no pre-chamber jet under low- and medium-load working conditions. Effects of pre-chamber spark timing and intake charge temperature on JCCI process were tested. It was proven that the combustion phasing of the JCCI engine was closely related to the pre-chamber spark timing. A 20 °C temperature change of intake charge only caused a 2° crank angle change of the start of combustion. Extremely low nitrogen oxides (NOx) emission was achieved by JCCI combustion while keeping high thermal efficiency. The JCCI could be a promising technology for dual-fuel marine engines.

Keywords: jet controlled compression ignition (JCCI); emissions; ignition timing; robust control (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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