Kihyung Lee
한양대학교 기계공학과 · 공학
이 교수의 연구실은 내연기관의 고성능 및 저공해화를 위한 첨단 연소 기술과 연료 분사 메커니즘을 중심으로 연구를 진행하고 있습니다. 특히 두단계 연소, HCCI(균질 혼합기계 압축Ignition) 및 CAI 연소와 같은 고효율·저-emission 연소 기반 기술 개발에 중점을 두고 있으며, 고압 연료 분사 시스템의 분사 특성과 표면에 비침하는 행동에 대한 실험 및 수치 모델링도 함께 수행하고 있습니다. 연구는 실제 주행 조건을 반영한 WLTP 기준의 연료 소비 최적화 및 실내 공기질 향상을 위한 기술적 접근도 포함됩니다.
표시된 성과는 수집된 데이터 기준으로 산출되며, 일부 차이가 있을 수 있습니다.
The aim of this study was to confirm the effects of two-stage combustion on the combustion and NOx reduction characteristics of a four cylinder direct injection diesel engine. In order to analyze the combustion and emission characteristics, various injection parameters, such as injection quantity, injection timing and injection pressure were used under constant engine speed and engine load. In addition, the experimental results of two-stage combustion are compared to the single injection when in
Higher speeds, faster acceleration and longer duration need a more realistic driving cycle. As a result, a new test procedure that reflects real-world driving conditions has been applied since 2017, and the previous development environment optimized for NEDC has also changed. In this study, several factors and technologies relating to fuel consumption, such as vehicle weight, tire rolling resistance, drag of aerodynamic, stop–start, and 48 V mild hybrid system, are evaluated as per the new world
Homogeneous charge compression ignition (HCCI) combustion provides extremely low levels of pollutant emissions, and thus is an attractive alternative for future IC engines. In order to achieve a uniform mixture distribution within the engine cylinder, the characteristics of the fuel spray play an important role in the HCCI engine concept. It is well known that high-pressure common rail injection systems, mainly used in diesel engines, achieve poor mixture formation because of the possibility of
