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권태희(Taehee Kwon),전성용(Sungyong Jeon),나승우(Seungwoo Rah),김덕진(Deokjin Kim),오광철(Gwangchul Oh),이천환(Cheonwhoan Lee),이춘범(Chunbum Lee) 한국자동차공학회 2009 한국자동차공학회 부문종합 학술대회 Vol.2009 No.4
The new diesel injection system was developed for active regeneration DPF using catalyst. The developed diesel injection system is designed for the medium duty commercial vehicles, and can be operated independently to the engine of the vehicles. This injection system consists of a diesel injector that can make fine spray of diesel with or without compressed air, a dosing module that can supply pressurized diesel and air, and an ECU that can control the diesel injector and the dosing module. The performance of the injection system is introduced in this paper. The fuel rate of this system can support the exhaust mass flow of medium duty commercial vehicles. One of the characteristics of this system is that the spray angle is varied corresponding to air/fuel ratio in the chamber of the diesel injector. The diameter of atomized diesel is reasonably small, so that the diesel spray can be mixed with exhaust gas. Based on these performances of this system, now efficient tool for the active regeneration DPF is available, so that soot in the DPF can be removed excellently.