Homogeneous Charge Compression Ignition (HCCI) has challenges of ignition control. In this paper, HCCI ignition timing and combustion rate were controlled by two-stage direct injection (TSDI) strategies on a four-stroke gasoline HCCI engine. TSDI strategy was proposed to solve the two major problems of HCCI application-ignition control and load extension. Both simulation and experiments were carried out on a gasoline HCCI engine with negative valve overlap (NVO). An engine model with detailed chemical kinetics was established to study the gas exchange process and the direct injection strategy in the gasoline HCCI engine with TSDI and NVO. Simulation results were compared with experiments and good agreement was achieved. The simulated and experimental results provided a detailed insight into the processes governing ignition in the HCCI engine. Using TSDI, the fuel concentration, temperature as well as chemical species can be controlled. The effects of different injection parameters, such as split injection ratio and start-of-injection (SOI) timing, were studied. The experimental results indicate that, two-stage direct injection is a practical technology to control the ignition timing and combustion rate effectively in four-stroke gasoline HCCI engines. Both the high load and low load limits of HCCI operation were extended.
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e-mail: wangzhi@tsinghua.edu.cn
e-mail: wangjx@tsinghua.edu.cn
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July 2007
Technical Papers
Experimental and Computational Studies on Gasoline HCCI Combustion Control Using Injection Strategies
Zhi Wang,
Zhi Wang
State Key Laboratory of Automotive Safety and Energy,
e-mail: wangzhi@tsinghua.edu.cn
Tsinghua University
, Beijing 100084, China
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Jian-Xin Wang,
Jian-Xin Wang
State Key Laboratory of Automotive Safety and Energy,
e-mail: wangjx@tsinghua.edu.cn
Tsinghua University
, Beijing 100084, China
Search for other works by this author on:
Shi-Jin Shuai,
Shi-Jin Shuai
State Key Laboratory of Automotive Safety and Energy,
Tsinghua University
, Beijing 100084, China
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Guo-Hong Tian,
Guo-Hong Tian
State Key Laboratory of Automotive Safety and Energy,
Tsinghua University
, Beijing 100084, China
Search for other works by this author on:
Xin Liang An
Xin Liang An
State Key Laboratory of Automotive Safety and Energy,
Tsinghua University
, Beijing 100084, China
Search for other works by this author on:
Zhi Wang
State Key Laboratory of Automotive Safety and Energy,
Tsinghua University
, Beijing 100084, Chinae-mail: wangzhi@tsinghua.edu.cn
Jian-Xin Wang
State Key Laboratory of Automotive Safety and Energy,
Tsinghua University
, Beijing 100084, Chinae-mail: wangjx@tsinghua.edu.cn
Shi-Jin Shuai
State Key Laboratory of Automotive Safety and Energy,
Tsinghua University
, Beijing 100084, China
Guo-Hong Tian
State Key Laboratory of Automotive Safety and Energy,
Tsinghua University
, Beijing 100084, China
Xin Liang An
State Key Laboratory of Automotive Safety and Energy,
Tsinghua University
, Beijing 100084, ChinaJ. Eng. Gas Turbines Power. Jul 2007, 129(3): 870-876 (7 pages)
Published Online: February 21, 2006
Article history
Received:
November 2, 2005
Revised:
February 21, 2006
Citation
Wang, Z., Wang, J., Shuai, S., Tian, G., and An, X. L. (February 21, 2006). "Experimental and Computational Studies on Gasoline HCCI Combustion Control Using Injection Strategies." ASME. J. Eng. Gas Turbines Power. July 2007; 129(3): 870–876. https://doi.org/10.1115/1.2227030
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