哈尔滨工程大学学报
哈爾濱工程大學學報
합이빈공정대학학보
JOURNAL OF HARBIN ENGINEERING UNIVERSITY
2013年
11期
1345-1351
,共7页
低速柴油机%电控系统%高压共轨%硬件在环%燃油喷射控制%排气阀正时控制
低速柴油機%電控繫統%高壓共軌%硬件在環%燃油噴射控製%排氣閥正時控製
저속시유궤%전공계통%고압공궤%경건재배%연유분사공제%배기벌정시공제
low-speed diesel engine%electronic control system%high-pressure common-rail%control strategy%hard-ware in loop%fuel injection control%exhaust valve timing control
为研究电控系统主要控制参数随柴油机负荷变化规律及各参数间的相互关联，利用船用低速柴油机高压共轨电控系统硬件在环仿真试验平台，同步采集试验平台重要控制参数，对电控系统燃油轨压调节、伺服油轨压调节、低负荷喷油器轮换工作、燃油喷射定时和排气阀启闭定时等控制策略进行了研究。研究表明：燃油轨压调节采用闭环和前馈修正的控制算法，喷射定时控制与柴油机转速、扫气压力和燃油轨压相关联，柴油机低负荷时3个喷油器按一定间隔时间轮换工作；随柴油机负荷增加，伺服油轨压和排气阀开启持续角度亦增加；排气阀开启与柴油机转速和排气关闭角度相关，而排气阀关闭则仅与柴油机转速相关。
為研究電控繫統主要控製參數隨柴油機負荷變化規律及各參數間的相互關聯，利用船用低速柴油機高壓共軌電控繫統硬件在環倣真試驗平檯，同步採集試驗平檯重要控製參數，對電控繫統燃油軌壓調節、伺服油軌壓調節、低負荷噴油器輪換工作、燃油噴射定時和排氣閥啟閉定時等控製策略進行瞭研究。研究錶明：燃油軌壓調節採用閉環和前饋脩正的控製算法，噴射定時控製與柴油機轉速、掃氣壓力和燃油軌壓相關聯，柴油機低負荷時3箇噴油器按一定間隔時間輪換工作；隨柴油機負荷增加，伺服油軌壓和排氣閥開啟持續角度亦增加；排氣閥開啟與柴油機轉速和排氣關閉角度相關，而排氣閥關閉則僅與柴油機轉速相關。
위연구전공계통주요공제삼수수시유궤부하변화규률급각삼수간적상호관련，이용선용저속시유궤고압공궤전공계통경건재배방진시험평태，동보채집시험평태중요공제삼수，대전공계통연유궤압조절、사복유궤압조절、저부하분유기륜환공작、연유분사정시화배기벌계폐정시등공제책략진행료연구。연구표명：연유궤압조절채용폐배화전궤수정적공제산법，분사정시공제여시유궤전속、소기압력화연유궤압상관련，시유궤저부하시3개분유기안일정간격시간륜환공작；수시유궤부하증가，사복유궤압화배기벌개계지속각도역증가；배기벌개계여시유궤전속화배기관폐각도상관，이배기벌관폐칙부여시유궤전속상관。
In order to research the law of the main control parameters of the electronic control system changing with diesel engine loads, as well as correlation of parameters, the control strategy of the high-pressure common-rail elec-tronic control system for a marine low-speed diesel engine is presented in this paper. Based on a hardware-in-loop simulation test bench, the important control parameters of the test bench were collected synchronically to research the fuel rail pressure control of the electronic control system, servo oil rail pressure control, low load injector rotation law, the injection timing and the exhaust valve start and stop timing, etc. The research results show that the common-rail fuel pressure is regulated by using a closed-loop and a correction of a feed-forward control algorithm. The injection timing control is affected by the rotation speed of the marine low-speed diesel engine, the scavenging pressure and the fuel common-rail pressure. Three injectors in a cylinder work alternately with a certain interval time at low loads of the marine low-speed diesel engine. With the increase of the load of the marine diesel engine, the servo oil pressure and the exhaust valve opening duration increase respectively. The exhaust valve opening angle is related to the rotation speed of the marine diesel engine and the exhaust valve closing angle of the former cycle, and the exhaust valve clos-ing angle is solely associated with the revolving speed of the marine low-speed diesel engine.
