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预喷参数对轻型车用高压共轨柴油机振动影响

Machinery Design & Manufacture(2023)

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Abstract
以某一轻型车用四缸高压共轨柴油机为研究对象,研究了预喷参数对柴油机整机振动的影响.在不改变柴油机零部件的前提下,改变预喷油量和主、预喷时间间隔,对比分析各参数下柴油机整机的振动情况.试验结果表明:随着预喷油量的增加,整机振动变大.怠速工况下预喷对整机振动影响更为明显.预喷油量的确定必须要由主、预喷时刻以及循环喷油量共同决定才能实现减振;存在最佳主、预喷时间间隔使整机振动最小,并且这一时间间隔与喷油量及主喷时刻相关.
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Key words
Pilot Injection Parameters,High Pressure Common Rail Diesel Engine,Vibration,Combustion,Pressure Rise Rate
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