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Ignition and Combustion Control of Diesel HCCI
Technical Paper
2005-01-2132
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Homogeneous Charge Compression Ignition (HCCI) is effective for the simultaneous reduction of soot and NOx emissions in diesel engine. In general, high octane number fuels (gasoline components or gaseous fuels) are used for HCCI operation, because these fuels briefly form lean homogeneous mixture because of long ignition delay and high volatility. However, it is necessary to improve injection systems, when these high octane number fuels are used in diesel engine. In addition, the difficulty of controlling auto-ignition timing must be resolved. On the other hand, HCCI using diesel fuel (diesel HCCI) also needs ignition control, because diesel fuel which has a low octane number causes the early ignition before TDC.
The purpose of this study is the ignition and combustion control of diesel HCCI. The effects of parameters (injection timing, injection pressure, internal/external EGR, boost pressure, and variable valve timing (VVT)) on the ignition timing of diesel HCCI were investigated. Then, exhaust emissions were simultaneously measured at each operating condition. As a result, the combinations of these strategies made it possible to cause the ignition near TDC at each operating condition. In addition, low smoke and NOx emissions were realized without a drastic increase in THC and CO emission. These results show the possibility of diesel HCCI operation at wide load ranges.
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Authors
- Daisuke Kawano - National Traffic Safety and Environment Laboratory
- Hisakazu Suzuki - National Traffic Safety and Environment Laboratory
- Hajime Ishii - National Traffic Safety and Environment Laboratory
- Yuichi Goto - National Traffic Safety and Environment Laboratory
- Matsuo Odaka - National Traffic Safety and Environment Laboratory
- Yutaka Murata - Waseda University
- Jin Kusaka - Waseda University
- Yasuhiro Daisho - Waseda University
Topic
Citation
Kawano, D., Suzuki, H., Ishii, H., Goto, Y. et al., "Ignition and Combustion Control of Diesel HCCI," SAE Technical Paper 2005-01-2132, 2005, https://doi.org/10.4271/2005-01-2132.Also In
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