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The Characteristics of Combustion and Exhaust Emission according to Operating Condition and Fuel Composition in a Direct Injection Type HCCI Diesel Engine  

이기형 (한양대학교 기계공학과)
류재덕 (한양대학교 대학원)
이창식 (한양대학교 기계공학과)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.12, no.1, 2004 , pp. 10-16 More about this Journal
Abstract
The Homogeneous Charge Compression Ignition (HCCI) engine has advantage for reducing the NOx and P.M. simultaneously. Therefore, HCCI engine is receiving attention as a low emission diesel engine concept. This study was carried out to investigate the characteristics of combustion and exhaust emission for operating conditions in a direct injection type of HCCI engines such as supercharged and naturally aspirated using diesel fuel and additive. From the experimental result, we found that cool flame was always appeared and also it was difficult to control combustion characteristics by changing the injection timing in HCCI. In addition, at the lean air-fuel ratio and high speed range, it was observed that charging air pressure, additive or increasing intake air temperature is effective to increase combustion performance and reduce exhaust emission. We concluded that chemical reaction by the increasing intake air temperature or additive without physical improvement has limitation for reduction of exhaust emission.
Keywords
HCCI; Charging air pressure; Additive; Intake air temperature; Combustion;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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