Other Conference Proceedings


TitleChoongsik Bae, "Effects of Injection Strategy on Diesel Combustion,"pp1-7, Proc. 2005 the 7th China and Korea International Conference on Internal Combustion Engines and Automotive Engineering, Hangzhou, Apr. 2005.

Choongsik Bae, “Effects of Injection Strategy on Diesel Combustion,”pp1-7, Proc. 2005 the 7th China and Korea International Conference on Internal Combustion Engines and Automotive Engineering, Hangzhou, Apr. 2005.

Abstract

The main objective of this study is to investigate the effect of pilot-, post- and multiple-fuel injection strategies on engine performance and emissions. The study was carried out on a single cylinder optical direct injection diesel engine equipped with a high pressure common rail fuel injection system. Spray and combustion evolutions were visualized through a high speed chargecoupled device (CCD) camera. Tests were performed at fixed engine speed with various injection and flow parameters. Engine performance, emissions and cylinder pressure were obtained and analyzed to investigate the effect of fuel injection and engine operations. It was found that pilot-injection reduced the ignition delay of main injection, then contributed to the improvement of power output by controlling the premixed combustion. The post-injection was found to be very effective in completing the oxidation process and reducing the particulate emissions even when small fuel quantities were injected. It was also found that multiple injection could reduce particulate emissions by more than 40% in some cases.

PreviousEssam Abo-Serie, Yujing lin and Choongsik Bae, “Experiment and Modeling of Spray Impingement from Multi-hole DISI Injectors,” DF08, 6th KSME-JSME Thermal and Fluids Engineering Conference, Jeju, Mar. 2005.
NextEssam Abo-Serie, Seoksu Moon and Choongsik Bae, “Near-Nozzle Liquid Flow and Spray Characteristics of DISI Swirl Injectors,” pp255-261, Proc. 8th ILASS-Asia (Liquid Atomization and Spray Systems), Seoul, Oct. 2005. 10.
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