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메탄-공기 예혼합기에서의 층류 화염속도 및 화염두께 예측
권순익,보웬 필립,Kwon, Soon-Ik,Bowen, Philip J. 대한기계학회 2003 大韓機械學會論文集B Vol.27 No.9
The thickness of flame and preheat zone from burning velocity which was computed by using Premix code of Chemkin program for methane-air mixture. Also the thickness was evaluated from temperature profile which is also obtained from Premix code for the equivalence ratio of 0.5 to 1.6. The computations were carried out for the laminar flame thickness and burning velocity under the unburned gas temperature 0.5bat-30bar and temperature of 300K-700K at ${\Phi}=l.0$. Comparison of the results showed no difference between these two methods. The flame thickness was decreased by increasing the pressure and temperature, but, the affect of pressure is more significant than the effect of temperature on the flame thickness. The thickness of preheat zone was about 66.5% of the flame thickness, and flame thickness and burning velocity were also predicted by using empirical equation.
권순익(Soon-Ik Kwon) 한국산업융합학회 1999 한국산업융합학회 논문집 Vol.2 No.1
It is necessary to observe the in-cylinder phenomena directly for understanding in-cylinder air motion, combustion and evaluation of the numerical simulation. This paper describes the usage, structure and peculiar technique in design, and introduces the examples of the analyses using the engine from the Honda R&D Technical Review.<br/>
스월비 변화가 직접분사식 디젤기관의 연소특성에 미치는 영향
권순익(Soon-Ik Kwon) 한국산업융합학회 2003 한국산업융합학회 논문집 Vol.6 No.2
Besides the fuel spray behavior and combustion chamber shape. an air motion has a key role on exhaust gas emission and performance in a DI diesel engine. A swirl ratio represents the ratio of the intake swirl velocity to the engine speed. The main purpose in this work is to investigate the effects of the swirl ratio to the combustion characteristics. A shroud valve machined to change the swirl ratio. Test was carry out by changing the engine speed, nozzle diameter and swirl ratio in a single cylinder diesel engine. From this study, the optimized combustion was found at swirl ratio 2.7. And it was also found that the increasing the maximum cylinder pressure with an increasing swirl ratio lead to decrease a smoke and to increase NOx.
권순익(Soon-Ik Kwon) 한국산업융합학회 2002 한국산업융합학회 논문집 Vol.5 No.4
Specific fuel consumption or specific power output characteristics of an internal combustion engine are likely, in conventional applications, the most important operating criteria. In this work, the test method for the engine performance was introduced in a compression ignition(diesel) engine.