博世柴油共轨系统诊断高级培训.pptVIP

课程纪律 课程安排 课堂案例模拟 Internal | RBCD/QMM3-Zh | 27/02/2012 | ? Robert Bosch GmbH 2012. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights. 博世柴油共轨系统诊断高级培训 ? Diesel Systems 推荐排查步骤 2.车辆起动后，用示波器测量曲轴传感器的信号输出波形 测得结果如右图： 3.检查曲轴传感器是否损坏或污染 完好无污染 4.检查曲轴传感器安装间隙 为1.2mm 5.检查曲轴信号轮安装以及信号盘本身 信号轮如右图 故障原因 飞轮信号轮加工问题，有个信号孔加工位置有偏差，更换信号轮后故障解决  Internal | RBCD/QMM3-Zh | 27/02/2012 | ? Robert Bosch GmbH 2012. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights. 博世柴油共轨系统诊断高级培训 ? Diesel Systems 案例 11 车辆信息 车型：混凝土搅拌车，配置四气门6缸发动机 博世燃油系统部件：EDC7UC31电控单元, CPN2.2油泵，CRIN2喷油器和锻造轨 整车配置：ECU控制的起动继电器，空档开关，刹车开关，离合器开关，节油开关，排气制动，CAN通讯，ECU控制的空调压缩机继电器，空气预热继电器，预热灯，闪码灯，故障灯，副起动开关以及车下停止开关，无发动机制动 故障信息 车辆行驶中突然故障灯亮 ，振动和噪音比较大，加速车辆无力，熄火再起动后故障依旧 行驶里程 车辆已运行15000公里，没有过大修，正常保养 故障码信息 故障码P1203 （闪码1-5-1）：驱动电路组1高端对电源或对地短路 钥匙上电不起动时故障码可以清除掉，起动后故障码又报出 Internal | RBCD/QMM3-Zh | 27/02/2012 | ? Robert Bosch GmbH 2012. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights. 博世柴油共轨系统诊断高级培训 ? Diesel Systems 推荐排查步骤 1.拔下ECU插头3，钥匙上电,用万用表测量喷油器 线束端3.04 ，3.11，3.05对地电压 为第一缸0V，第二缸0V,第三缸0V 2.钥匙下电, 用万用表测量线束3.04 ，3.11， 3.05分别和地的电阻。 第一缸无穷大，第二缸0?,第三缸无穷大 3.断开ECU3号头线束，断开第二缸喷油器高端线束 测量如图喷油器接线柱对地电阻 无穷大 4..判断为第二缸喷油器高端线束出现与地短路 包扎后故障解决 故障原因 第二缸喷油器线束磨损,线束高端对地短路  ECU 3.11 3.06 2缸喷油器 X 1.断开连线后 测量对地电压 X 2.断开连线后 测量与地电阻 X 3.断开连线后 测量与地电阻 Internal | RBCD/QMM3-Zh | 27/02/2012 | ? Robert Bosch GmbH 2012. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights. 博世柴油共轨系统诊断高级培训 ? Diesel Systems 案例 12