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The Effects of Injection Conditions and Combustion Chamber Geometry on Performance and Emissions of DI-PCCI Operation in a Diesel Engine
Technical Paper
2007-01-1874
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The present study aims to obtain a strategy for optimizing the combination of injection conditions and combustion chamber geometry to achieve low carbon monoxide (CO), nitrogen oxides (NOx) and smoke emissions with high thermal efficiency at low loads in direct-injection premixed charge compression ignition (DI-PCCI) operation in a diesel engine. To this end, experiments were performed using a naturally-aspirated single-cylinder DI diesel engine equipped with a common-rail injection system and a cooled exhaust gas recirculation (EGR) system under various injection conditions, including injection timing, injection angle and injection quantity, and combustion chamber geometry. The results indicate that CO emission was reduced at injection timings that provide high peak heat release rates. To improve the NOx-CO trade-off relation, the spray angle should be properly selected depending on the combustion chamber geometry.
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Authors
- Naoto HORIBE - Graduate School of Energy Science, Kyoto University
- Ken TAKAHASHI - Graduate School of Energy Science, Kyoto University
- Sung-Sub KEE - Graduate School of Energy Science, Kyoto University
- Takuji ISHIYAMA - Graduate School of Energy Science, Kyoto University
- Masahiro SHIOJI - Graduate School of Energy Science, Kyoto University
Topic
Citation
HORIBE, N., TAKAHASHI, K., KEE, S., ISHIYAMA, T. et al., "The Effects of Injection Conditions and Combustion Chamber Geometry on Performance and Emissions of DI-PCCI Operation in a Diesel Engine," SAE Technical Paper 2007-01-1874, 2007, https://doi.org/10.4271/2007-01-1874.Also In
References
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