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The Effect of Control of the VGT and EGR in a Turbocharged Common-Rail Diesel Engine on Emissions under Partial Loads Conditions  

Jeong, Soo-Jin (Korea Automotive Technology Institute)
Chung, Jae-Woo (Korea Automotive Technology Institute)
Kang, Jeong-Ho (Korea Automotive Technology Institute)
Kang, Woo (Korea Automotive Technology Institute)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.15, no.6, 2007 , pp. 151-158 More about this Journal
Abstract
The static and dynamic behaviour of VGT and EGR systems has a significant impact on overall engine performance, fuel economy and exhaust emissions. This is because they define the state and composition of the air charge entering the engine. This work focused on the effect of the aperture ratio of VGT and EGR on the emission and flow characteristics under partial loads conditions. The investigation carried out using 2 liter PCCI 4 cylinder diesel engine with VGT and EGR. The result of this study shows that smoke increases with increasing EGR rate and NOx decreases with increasing EGR rate. It was also found that the residual gas contents greatly impact on soot emission under partial load condition. Finally, it can be concluded that VGT and EGR aperture ratio can greatly impact not only on soot and NOx but also air charging.
Keywords
Exhaust gas recirculation(EGR); Variable geometry turbo-charger(VGT); Wave action; Partial premixed charge compression ignition(PCCI;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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