在注塑制品本钱构成中，电费占了恰当份额。根据注塑机设备技术情况，注塑机油泵马达耗占悉数设备耗电量的份额高达50%~65%，因而也极具节能潜力。旨在降低能量损耗的各种领先节能控制技术，正在逐渐成为注塑机电液系统的研讨关键。 
现在，国产注塑机电液控制技术几乎悉数运用电液份额技术，其技术特征是用三通型份额调速阀控制速度。该电液份额技术虽可大大减少元件数量，但因选用定量泵供油，工作进程中一贯存在与流量有关的能量丢掉，国外已很少选用。 
注塑机技术进程通常分为锁模、打针、塑化、保压、冷却、开模等几个期间，各个期间需求不一样的压力和流量。对油泵马达而言，注塑进程处于改动的负载情况，在定量泵的液压系统中，油泵马达以安稳转速供给安稳流量，剩余的液压油通过溢流阀回流，此进程称为高压节省。据统计，由高压节省构成的能量丢掉高达36%~68%。 

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