内燃机工程
內燃機工程
내연궤공정
CHINESE INTERNAL COMBUSTION ENGINE ENGINEERING
2009年
6期
58-60,66
,共4页
内燃机%柴油机%高压共轨%电磁阀%复杂可编程逻辑器件%故障诊断
內燃機%柴油機%高壓共軌%電磁閥%複雜可編程邏輯器件%故障診斷
내연궤%시유궤%고압공궤%전자벌%복잡가편정라집기건%고장진단
IC engine%diesel engine%high pressure common rail%solenoid valve%complex programmable logic device(CPLD)%fault diagnosis
根据高压共轨柴油机喷油电磁阀在正常工作以及短路或断路工作状态下的驱动电流特性的分析结果,设计了一种基于CPLD（复杂可编程逻辑器件）、采用纯硬件逻辑电路结构的电磁阀故障检测系统.该系统通过对电磁阀驱动电流特征的快速提取和判断,能够迅速检测电磁阀的不同故障,并在故障出现时对电磁阀和驱动系统进行保护.试验结果表明:系统能在7ns内关闭故障电磁阀,从而有效地保证了发动机及其控制系统的安全运行.
根據高壓共軌柴油機噴油電磁閥在正常工作以及短路或斷路工作狀態下的驅動電流特性的分析結果,設計瞭一種基于CPLD（複雜可編程邏輯器件）、採用純硬件邏輯電路結構的電磁閥故障檢測繫統.該繫統通過對電磁閥驅動電流特徵的快速提取和判斷,能夠迅速檢測電磁閥的不同故障,併在故障齣現時對電磁閥和驅動繫統進行保護.試驗結果錶明:繫統能在7ns內關閉故障電磁閥,從而有效地保證瞭髮動機及其控製繫統的安全運行.
근거고압공궤시유궤분유전자벌재정상공작이급단로혹단로공작상태하적구동전류특성적분석결과,설계료일충기우CPLD（복잡가편정라집기건）、채용순경건라집전로결구적전자벌고장검측계통.해계통통과대전자벌구동전류특정적쾌속제취화판단,능구신속검측전자벌적불동고장,병재고장출현시대전자벌화구동계통진행보호.시험결과표명:계통능재7ns내관폐고장전자벌,종이유효지보증료발동궤급기공제계통적안전운행.
Through the analysis of current characteristics in fuel injector solenoid valve under normal condition and various fault conditions, a diagnostic module using pure hardware logic structure for common rail diesel engine solenoid valve was designed based on CPLD(complex programmable logic device). The module can quickly detect various fault status of solenoid valve. When the fault is detected, the module can also protect the valve and driving system immediately. Experimental result shows that it can turn off the valve within 7ns after a fault was detected, so that to protect the engine and its controller.
