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An Experimental Study on Application of UBD20 according to EGR Rate in a CRDI Type Diesel Engine  

Shin, Seo-Yong (Graduate School of Mechanical Engineering, Chungnam National University)
Im, Seok-Yeon (Graduate School of Mechanical Engineering, BK21 Mechatronics Group, Chungnam National University)
Jung, Young-Chul (Division of Mechanical & Automative Engineering, Kongju National University)
Choi, Doo-Seuk (Division of Mechanical & Automative Engineering, Kongju National University)
Ryu, Jeong-In (Department of Mechanical Engineering, BK21 Mechatronics Group, Chungnam National University)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.15, no.6, 2007 , pp. 137-143 More about this Journal
Abstract
An object of this study is to understand the application characteristics in accordance with changes of EGR rate, applying BD20 reformed by ultrasonic energy irradiation to common-rail diesel engine. BD containing about 10% oxygen has attracted attention due to soaring crude oil prices and environmental pollution. This oxygen decreases soot by promoting combustion, but it also increases NOx. To make up for this problem, an EGR system is applied so that NOx might be decreased. In that case, engine power is lowered and exhaust gas is raised. However, the reformed fuel by ultrasonic energy irradiation is changed physically and chemically, promotes combustion, and thus solves such a problem. As the results of the experimemt, we could identify the optimum EGR rate by investigating the engine performance and the characteristics of exhaust materials in accordance with the EGR rate after ultrasonic energy irradiation to BD20 and applying it to common-rail diesel engine. The optimum EGR rate that can satisfy both engine performance and characteristics of exhaust materials was in the range of 15%.
Keywords
Common-rail diesel engine; BD; UBD; EGR; Soot; Combustion pressure;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
연도 인용수 순위
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