International Conference


TitleJeeyeon Jeon, Choongsik Bae, "Effects of EGR and DME Injection Strategy in Hydrogen-DME Compression Ignition Engine," SAE/JSAE Technical Paper 2011-01-1790, presented at 2011 SAE Powertrains ,Fuel & Lubricants, Kyoto, Aug. 2011

Jeeyeon Jeon, Choongsik Bae, “Effects of EGR and DME Injection Strategy in Hydrogen-DME Compression Ignition Engine,” SAE/JSAE Technical Paper 2011-01-1790, presented at 2011 SAE Powertrains ,Fuel & Lubricants, Kyoto, Aug. 2011

Abstract

The compression ignition combustion fuelled with hydrogen and dimethyl-ether was investigated. Exhaust gas recirculation was applied to reduce noise and nitrogen oxide (NOx) emission. When dimethyl-ether was injected earlier, combustion showed two-stage ignitions known as low temperature reaction and high temperature reaction. With advanced dimethyl-ether injection, combustion temperature and in-cylinder pressure rise were lowered which resulted in high carbon monoxide and hydrocarbon emissions. However, NOx emission was decreased due to relatively low combustion temperature. The engine combustion showed only high temperature reaction when dimethyl-ether was injected near top dead center. When exhaust gas recirculation gas was added, the in-cylinder pressure and heat release rate were decreased. However, it retarded combustion phase resulting in higher indicated mean effective pressure. The carbon monoxide and hydrocarbon emissions were increased and NOx emission was decreased with exhaust gas recirculation was added. In this study, low-emission, hydrogen-DME compression ignition engine was achieved through the DME injection strategy and EGR.

PreviousYoungsoo Park, Choongsik Bae, “Influence of EGR and Pilot Injection on PCCI Combustion in a Single-Cylinder Diesel Engine,” SAE Technical Paper 2011-01-1823, presented at 2011 SAE Powertrains ,Fuel & Lubricants, Kyoto, Aug. 2011
NextHeechang Oh, Choongsik Bae, Jungseo Park, Jeeyeon Jeon, “Effect of the Multiple Injection on Stratified Combustion Characteristics in a Spray-Guided DISI Engine,” SAE Technical Paper 2011-24-0059, presented at 10th SAE International Conference on Engines & Vehicles (ICE 2011) 11-15, September, 2011, Capri, Naples, Italy

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