EGR율 변화와 분사전략에 따른 저온 디젤 연소의 모드 전환 특성

다국어 초록 (Multilingual Abstract)

Combustion mode transition between low temperature diesel combustion (LTC) and conventional diesel combustion was carried out in a direct injection diesel engine by changing exhaust gas recirculation (EGR) rate with two throttles. The characteristics of combustion mode transition was analyzed based on the in-cylinder pressure and hydrocarbon (HC) emission of each cycle. In the case of mode transition from LTC to conventional diesel combustion, rapid decrease in indicated mean effective pressure (IMEP) and increase in HC emissions occurred right after throttle movement owing to air flow overshoot. On the other hand, IMEP was decreased very slowly and continuously during mode transition from conventional diesel combustion to LTC. As the EGR rate was changed slowly, IMEP fluctuation was reduced. Rapid IMEP fluctuation which occurred during mode transition by changing EGR rate was improved with application of injection strategy.

목차 (Table of Contents)

• Abstract
• 1. 서론
• 2. 실험 장치 및 방법
• 3. 실험 결과
• 4. 결론
• 후기
• References