汽车发电机供电不足汽车会出现什么症状

2024-12-11 09:33:39
推荐回答(3个)
回答1:

1、昏暗的路灯

如果发电机开始坏了,车灯或仪表盘灯光开始变暗。一旦仪表灯或前大灯暗淡,这是潜在的交流发电机故障的明显标志。在衰落的交流可能会导致其他电子配件,如电动车窗和/或电动座椅,以比平常更慢操作。

2、警告灯

当一个仪表板里发电机警示灯闪烁。通常情况下,光线会被形如电池,不过,有些人可能会说,ALT(交流发电机)或GEN(发电机)。如果正在使用多个电气组件此灯可能只触发。它通常是在车辆有多少车辆的发电机已经离开,剩有多少用电量。

汽车发电机供电判断方法

使用简单的工具测量电压,如果手边有万用表,可以通过测量发电机的输出电压来判断发电机的工作状态。

若发现车辆已经出现难以起动的情况,请尽快用万用表测量蓄电池的空载电压,即钥匙门处于关闭状态时的蓄电池电压。如果这个电压值低于12.8V,则说明空载电压偏低,会引起车辆起动不顺畅。

随后,起动发动机,再次测量蓄电池两个极柱之间的电压。如果测量值低于13.5V,说明发电机输出电压低,导致蓄电池的电量补充不足。

回答2:

  1. 发电机定子与碳刷的接触点脏,造成励磁电压不稳定,那么交流电的输出也不稳定;

2.发动机的空滤脏了,需要清洗,发动机的空滤脏了容易造成发动机进气量不足,发动机的输出功率下降,转速不稳定也极易造成发电机的电压不稳定;

3.发电机的稳定系统出现问题,要更换AVR.

发电机故障现象: 1、不发电或电压不正常 原因 处理方法 (1) 保险丝断 (1)在确认线路正常后,换上保险丝再合闸 (2)电表损坏 (2)用万用表电压档直接测量发电机端电压 (3)电表不准 (3)定时校验电表,不准的应予更换 (4)调压器插脚接触不良 (4)检查调压器50HZ,60HZ及6、7插脚是否有松动现象 (5)浪涌电压抑制器短路 (5)检查硒堆,确保无碰片现象 (6)旋转二极管损坏 (6)将旋转整流子通向主机转子磁场的连接线拆下,用万用表或校灯就可对二极管进行测量,如果损坏需要更换管子(6只一起更换) (7)失去剩磁 (7)用蓄电池12V接入交流励磁机的定子线圈充磁一次,正极接F+(红线),负极碰F-(黑线)(约15-20秒种) 注意:充磁时,发电机必须处于静止 状态 (8)接线错误 (8)详细检查,按接线图接对 (9)励磁机磁场线圈断路 (9)将断线处纽合,用锡焊焊牢,外用绝缘材料包好 (10)接头松动或接触不良 (10)将接头擦干净后,重新接好 (11)发电机电枢线圈断路 (11)找出断路处,重新焊接包扎 (12)发电机电枢线圈短路 (12)短路会造成严重发热现象,应于拆换线圈 (13)励磁机电枢线圈断路或短路 (13)找出故障点,更换线圈 (14)转速不正常 (14)用转速或频率表检查发电机转速 (15)调节器保护关断路动作 (15)根据调节器说明书纠正后调节调节器 (16) 调节器失效 (16)更换调节器

回答3:

1.低速或起步汽车会嗡嗡响一下,发梗没有爆发力,尤其是坡道起步很明显。
2.发电机皮带抖动较大,怠速轻点油门看得很清楚,尤其带空调,症状更明显。

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