|Title||Joonsik Hwang, Youngsoo Park, Kihyun Kim and Choongsik Bae, "Effect of fuel temperature on injection quantity and macroscopic spray characteristics", 17th Annual Conference on Liquid Atomization and Spray Systems (ILASS-Asia), Shanghai, China, 26-29, Oct 2014.|
Joonsik Hwang, Youngsoo Park, Kihyun Kim and Choongsik Bae, “Effect of fuel temperature on injection quantity and macroscopic spray characteristics”, 17th Annual Conference on Liquid Atomization and Spray Systems (ILASS-Asia), Shanghai, China, 26-29, Oct 2014.
Unburned hydrocarbon emissions and combustion instability are serious problems during cold starting in diesel en-gines. In this research, characteristics of injection quantity, injection rate and macroscopic spray development were investigated under various diesel fuel temperature. The experiments were carried out with a fuel injection equipment (FIE) system which was able to control fuel temperature between -30 oC to 40 oC. All of fuel lines and fuel delivery components were insulated to minimize heat loss. Macroscopic spray imaging was performed in a constant volume combustion chamber (CVCC) under simulated environment of a diesel engine. Despite of the same injection signal and duration, injection quantity showed decreasing tendency as the fuel temperature decreased. Injection rate meas-urement verified that start of injection was retarded and end of injection was advanced with lower fuel temperature condition. It also can be seen that the peak of injection rate was decreased as fuel temperature decreased. From mac-roscopic spray imaging, liquid penetration length with lower fuel temperature was longer than that with higher fuel temperature due to deteriorated atomization. Based on these results, the flow and spray characteristics under cold start condition were physically interpreted.
|Previous||Donghoon Kim and Choongsik Bae, “In-cylinder Characteristics of a Gasoline Direct Injection Compression Ignition Engine Using Computational Fluid Dynamics”, Acamedy for Co-creative Education of Environment and Energy Science (ACEEES), Perth, Australia, 2014|
|Next||Jaeheun Kim, Hyunwook Park and Choongsik Bae, “Comparison of the effects of late intake valve closing (LIVC) strategy on engine performance between conventional diesel and di-methyl ether (DME) in a compression ignition engine”, the 21st international Symposium on Alcohol Fuels (ISAF) 2015, Gwangju, Korea, Mar. 10-13, 2015.|