哈弗h2抖动:因哈弗H2抖动问题，长城第二起召回事例，这回效果更好是由目录网为您收集修改整理而来，更多相关内容请关注网站汽车资讯栏目。
日前，长城哈弗因为大量H2、H6车主投诉严重抖动，引致中消费发函调查的事件，闹得沸沸扬扬的事，这里就不多说了。
在《因H2抖动问题，又一起哈弗私下召回事件，这回效果不错》一文中,小编介绍了一例长城哈弗的召回事件，总体效果是不错的。但车主事后对小编说，他对这次的技术主要变更方式——4点式发动机悬置系统变更为3点式发动机悬置系统不是很满意，因这是一个非常大的修改，担心带来安全性问题；而且，早期采取同样处理方式的一些车友，刚变更时，效果不错，但过一段时间后，抖动问题就复发了。
今天，小编又收集到一例召回事件，在此分享给大家。例子由哈弗H2 14款手动型车主网友N提供，特此对N表示感谢!
技术变更前用友趣安驾手机APP测试的抖动大小：
不开空调平均抖动887
开空调平均抖动3342，高点4800左右
说明：这台H2，不开空调平均抖动887，开启空调后平均抖动3342，在H2当中，其实属于不高的（最高的高达30000+），但给人的感觉已经极度不舒服。
变更内容：
这台车原来是4点式悬置系统，曾经变更为3点式，现再次变更回4点式发动机悬置系统；
增加水箱散热器悬置；
增加或更换三元催化器（排气管）悬置；
更换全车发动机悬置系统支架总成；
更换发动机悬置系统支架总成时，仔细反复测量支架间隙，并安装垫片调整发动机高度；
特别要提出的是，这次技术变更不是由4S店的技术人员负责，而是由厂方派驻技术人员专程过来处理，并带来了专业工具，变更时反复测试并调整技术方案，工程师们一直工作到凌晨1点，车主第二天才提回汽车。长城的工程师们也是够拼的了，赞一个。
因为4S店对变更过程比较保密，车主没能拍摄作业图，只能提供变更完成后的发动机机舱图
条码清淅的部件就是安装的发动机悬置支架总成
变更后的效果，同样用友趣安驾APP测试：
不开空调平均抖动364，正常水准
开空调平均抖动819，正常水准，但偏高一些
车主最后表示，对变更效果非常满意。
仔细研究变更后，开空调后的友趣安驾APP测试的发动机心电图，可以发现一个奇特的现象：
一、红线代表抖动，象波浪一样忽高忽低；
二、绿线，是友趣安驾利用独创的技术和算法，通过汽车NVH——振动识源技术，利用振动测试的发动机转速。图中，绿线代表的转速，和抖动的变化规律是一样的：转速低，抖动就低；转速高，抖动就高，两者都同步忽高忽低，说明发动机无法收敛到一个稳定工作状态。而正常的发动机怠速工况，转速及其它参数，都应该是稳定无变化的。由此可以初步推断，发动机的ECU程序有BUG，无法控制发动机进入稳态工况，还有进一步优化空间。
由于这次变更，厂家只是针对极少一部分投诉的车主，而数以百万计长城哈弗H2车主，都享受不到相关服务。建议长城H2车主都关心此事，因为H2抖动是因为设计，而不是小部分零件制造质量的问题，涉及到绝大部分车辆，包括手动档自动档，所有年份生产的车型。
H2车主可以手机免费下载友趣安驾，0外设，绿色软件。发动机打火，把手机放在方向盘，放稳后点开始即可测试，非常简单。测试时需要开关空调，作下对比测试，如果开空调测试结果超过3000，那绝对是要重视的。
更多用车资讯，请关注我们，谢谢！
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