玉柴2018提前角调多少度

2025-04-02 09:53:44
推荐回答(1个)
回答1:

柴油机经过长期工作以后,由于有关配合件的磨损或相对位置的变化,会使原来的供油提前角发生变化,一般会滞后变小,容易造成柴油机启动困难.燃烧不完全,排气冒黑烟,功率不足,机温过高;但由于调整不当,也会发生供油太早的情况,会造成柴油机工作时有敲击声,启动时容易发生倒转。因此,必须及时检查、调整柴油机的供油提前用。以S195型柴油机为例,将检查调整供油提前角的几种方法介绍如下:一、检查方法:1、油动法:将燃油充满燃油泵,拆除高压油管,吹除出油阀紧座处的燃油,慢慢摇转曲轴,当发现紧座上有燃油流出,立即停止转动曲轴,检查飞轮上供油提前角的记号,应对准或接近水箱上刻线。必须指出,这种方法由于柱塞副磨损渗漏,检查时曲轴转得很慢,供油提前角又比用新柱塞付时迟2-3度,观察上又存在一定的误差,所以,用该方法检查供油提前角的准确性差,但方法简单。3、吹气法  拆除油泵进油管,排除油泵内的燃油,并拆除高压油管,出油阀紧座,取出油阀芯,再拧紧出油阀紧座,将高压油管一头对外,一头拧紧在出油阀紧座上,慢慢转动曲轴,同时用嘴向高压油管中吹气,当吹不通时,立即停止转动曲轴,再根据前面所述方法,检查飞轮上供油提前角的记号,即可判断供油提前角是否正确。4、止流法  拆除高压油管和出油阀紧座,取出出油阀芯和弹簧,将燃油系中充满柴油,转动曲轴,同前述方法,检查飞轮上供油提前角的记事情,即可判断供油提前角是否正确。

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