| Autor: |
Li Guoliang, Sen Lin Xiao, Wan Chen Sun, Man Zhi Tan, Jia Kun Du |
| Rok vydání: |
2014 |
| Předmět: |
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| Zdroj: |
Advanced Materials Research. :1386-1391 |
| ISSN: |
1662-8985 |
| DOI: |
10.4028/www.scientific.net/amr.953-954.1386 |
| Popis: |
In this study, simulation model on combustion process of a diesel engine was developed and the results were validated by experiments. Then the compression ignition was switched into PCCI (Premixed Charge Compression Ignition) in order to understand the effects of individual parameters on PCCI combustion and provide the reference for the further studies of testing and simulation. The results illustrate that the lower compression ratio extends the ignition delay and enhances fuel-air mixing and improves PCCI combustion. In addition, the oxygen concentration in cylinder is highly diluted as the EGR (Exhaust Gas Recirculation) rate increases and the NOx (Oxides of nitrogen) emissions are effectively depressed as EGR rate over 30%. Moreover, the reduction of main injection fuel quantity results in a decrease reactivity and peak heat release rate in combustion. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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