JP Journal of Heat and Mass Transfer
Volume 16, Issue 1, Pages 167 - 194
(February 2019) http://dx.doi.org/10.17654/HM016010167 |
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A STUDY ON THE EMISSION CHARACTERISTIC WITH THE COMBUSTION CONTROL FACTOR IN A HCCI ENGINE WITH SPLIT INJECTION METHOD
Changhee Lee, Jaewoo Chung and Kihyung Lee
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Abstract: Currently, for the serious global air pollution caused by the substance released from the present vehicle, emission control is more firmly implemented, it is expected that the regulatory requirements for the emission will become more stringent. A new concept of the combustion technology that can reduce the NOx and PM related to combustion is urgently needed. To such social demands, technology developed countries are efforts to develop the environment friendly vehicle engine at the national level in order to cope with strengthening emission control. As a main combustion technology among new combustion technology for the new generation engine, the homogenous charge compression engine (HCCI) is expanding its application range by employing multiple combustion mode, catalyst, direct fuel injection and partially premixed combustion.
In this paper, as the 2nd stage injection system was applied to this study rather than the implementation of a complete HCCI combustion, there is a tendency of partial premixed diesel combustion, discussed the effects of various combustion factors for improving combustion and exhaust performance. It is accomplished on the optimizing emission and performance with using the effect of various factors which are compression ratio, boost pressure, split injection (injection time) and injection pressure.
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Keywords and phrases: HCCI (homogeneous charged combustion ignition), EGR (exhaust gas recirculation), multiple injection, compression ratio, intake pressure.
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