HCCI Combustion Control by Injection Strategy with Negative Valve Overlap in a GDI Engine 2006-01-0415
Homogeneous Charge Compression Ignition (HCCI) faces challenges in ignition control. In this paper, the HCCI ignition timing and heat release were controlled with the GDI multi-stage injection strategy and negative valve overlap. By this way, the concentration, temperature as well as chemical species can be controlled. The effect of the different injection strategies, such as split injection proportion and injection timing, were studied on a dual-cylinder four-stroke gasoline HCCI engine. The experimental results indicated that, two-stage direct injection is a practical technology to control the ignition timing and combustion effectively in gasoline HCCI engine. The coefficient of variation of the engine cycle decreases. The operation range of HCCI combustion was extended in both high load and low load limit.
Citation: Guohong, T., Zhi, W., Jianxin, W., Shijin, S. et al., "HCCI Combustion Control by Injection Strategy with Negative Valve Overlap in a GDI Engine," SAE Technical Paper 2006-01-0415, 2006, https://doi.org/10.4271/2006-01-0415. Download Citation
Author(s):
Tian Guohong, Wang Zhi, Wang Jianxin, Shuai Shijin, An Xinliang
Affiliated:
State Key Laboratory of Automotive Safety and Energy, Tsinghua University
Pages: 9
Event:
SAE 2006 World Congress & Exhibition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
Homogeneous Charge Compression Ignition (HCCI) Combustion 2006-SP-2005
Related Topics:
HCCI engines
Ignition timing
Combustion and combustion processes
Gasoline
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