SEMINAR on An Experimental Study of HCCI Engine. Contents. Importance Working principle Starting of HCCI engines Control methods of HCCI Dual mode transitions Characteristics Recent developments Conclusion. HCCI. Importance SI engines have very low NOx and PM emissions
SEMINAR onAn Experimental Study of HCCI Engine
a promising alternative combustion technology with high efficiency and lower NOx and particulate matter emissions
combustion initiates simultaneously at multiple sites
within the combustion chamber and that there is no discernable flame propagation.
Rapid mixing of cool and hot intake air takes place achieving optimal temperature as demanded and hence better control.
Combustion timing can be controlled by adjusting balance of hot and cold flow
Increase of premixed ratio, shortens the NTC, increases the peak in-cylinder pressure and temperature and rises the highest heat release rate of HCCI combustion phase
The indicated thermal efficiency shows deterioration at high load with large premixed ratios.