Effects of the swirl ratio and injector hole number on the combustion and emission characteristics of a light duty diesel engine
| Autor: | Joonkyu Lee, Seungpil Lee, Sungwook Park, Sungjun Yoon, Hyuckmo Kwon |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Dynamometer
020209 energy Nuclear engineering Single-cylinder engine Energy Engineering and Power Technology CHEMKIN 02 engineering and technology Injector Combustion Diesel engine Industrial and Manufacturing Engineering law.invention 020303 mechanical engineering & transports 0203 mechanical engineering law 0202 electrical engineering electronic engineering information engineering Intensity (heat transfer) NOx |
| Zdroj: | Applied Thermal Engineering. 142:68-78 |
| ISSN: | 1359-4311 |
| Popis: | In this study, the effects of swirl and the injector hole number were investigated to enhance the mixing of fuel and air. Both experimental and analytical methods were employed. The KIVA code coupled with the CHEMKIN chemistry solver was used to analyze the swirl intensity at various angles of the swirl control valve and experimental results. For the experimental investigation, a 498.75 cc single cylinder engine and a 55 kW AC dynamometer were employed. The experiments were conducted at IMEP values of 6 and 10 bar with 7, 8, 9, and 10 hole injectors. The swirl intensity was varied by opening of the swirl control valve from 0° to 90°. The experimental results demonstrated that the swirl intensity has an effect on the combustion and emission characteristics. An enhanced swirl intensity reduced the PM and CO emissions but increased the NOx emissions and ISFC. An increase of the injector hole number resulted in decreases of the PM and CO emissions along with a an increase of NOx emissions and no significant difference of output. However, the exhaust characteristics with the 10 hole injector deteriorated as the interference increased. |
| Databáze: | OpenAIRE |
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