通用汽车自动变速箱培训资-AF20 electrical control

AF20TechnicalTrainingElectricalControl变速箱控制模块TCMAF20TechnicalTrainingElectricalControl变速箱控制框图TCM档位信号输入轴速度信号输出轴速度信号变速箱油温信号变速箱模式信号换档电磁阀SS2换档电磁阀SS1压力控制电磁阀锁止控制电磁阀空档控制电磁阀诊断通讯故障指示灯ECM车速信号CAN-BUSAF20TechnicalTrainingElectricalControl档位开关AF20TechnicalTrainingElectricalControl档位开关电路ABCPAF20TechnicalTrainingElectricalControl档位开关ABCPP高低低高R低低高高N高低高低D低高高低3高高高高L高低高低AF20TechnicalTrainingElectricalControl变速器控制模块(TCM)－诊断通信线路AF20TechnicalTrainingElectricalControlTCM与ECM通讯TCMECMB2371CANBUSA17A7BCMA7B196281DLC7#AF20TechnicalTrainingElectricalControlECMRPMTPSECTHVAC扭矩TCM档位信号扭矩请求车速信号故障指示灯CANBUSTCM与ECM通讯(CANBus)AF20TechnicalTrainingElectricalControl输入轴速度传感器ISSAF20TechnicalTrainingElectricalControl输入轴速度传感器ISS阻值AF20TechnicalTrainingElectricalControl输出轴速度传感器OSSAF20TechnicalTrainingElectricalControl输入轴输出轴速度传感器/及车速信号B15B6B16B5B14AF20TechnicalTrainingElectricalControl变速箱油温传感器TFTAF20TechnicalTrainingElectricalControl换档电磁阀SS1/SS2档位SS1SS21OFFON2ONON3ONOFF4OFFOFFAF20TechnicalTrainingElectricalControl换档控制电磁阀SS1/SS2AF20TechnicalTrainingElectricalControl换档和压力控制电磁阀AF20TechnicalTrainingElectricalControl换档控制电磁阀的测试AF20TechnicalTrainingElectricalControl压力控制电磁阀PCSAF20TechnicalTrainingElectricalControl压力控制电磁阀PCS信号波型TCM通过控制PWM信号的脉冲宽度来调节流过电磁阀的电流强度AF20TechnicalTrainingElectricalControl压力控制电磁阀PCS阻值AF20TechnicalTrainingElectricalControl变矩器锁止电磁阀开始结合几乎完全结合部分结合AF20TechnicalTrainingElectricalControl空档控制电磁阀5100U(V)T电磁阀工作时电磁阀不工作时AF20TechnicalTrainingElectricalControl锁止控制电磁阀换档控制电磁阀SS2压力控制电磁阀换档控制电磁阀SS1空档控制电磁阀阀体总成AF20TechnicalTrainingElectricalControl变速箱档位杆“HOLD”键AF20TechnicalTrainingElectricalControl变速箱紧急模式当AF20（50-40LN）控制电路发生某些故障时，TCM禁止对变速箱做任何控制，此时变速箱就会进入应急模式，在应急模式下：故障指示灯MIL点亮变速箱油压最高档位杆在D的位置时，变速箱的实际工作档位都是4档没有锁止离合器的控制没有换档的控制没有自适应的学习功能在下列部件发生电气故障时,TCM有可能进入紧急模式:输入轴速度传感器换档电磁阀压力控制电磁阀锁止控制电磁阀空档控制电磁阀AF20TechnicalTrainingElectricalControl变速箱油液检查MINMAX20℃+80℃MINMAXAF20TechnicalTrainingElectricalControl变速箱压力测试测试档位测试范围压力值(Mpa)D档怠速0.35-0.39失速1.12-1.27倒档怠速0.61-0.71失速1.67-1.91AF20TechnicalTrainingElectricalControl变速箱怠速压力测试AF20TechnicalTrainingElectricalControl变速箱失速压力测试AF20TechnicalTrainingElectricalControl变速箱迟滞测试AF20TechnicalTrainingElectricalControl变速箱手动换档测试AF20TechnicalTrainingElectricalControl变速箱路试路试之前要求变速箱油温在50℃-80℃(122-176°F)之间驱动档(D)测试在换档规程显示的换档点处检查增档、减档、强制降档和锁止操作检查发动机的制动操作检查是否存在异常振动、噪音和感觉生硬驻车档(P)测试将车停放在坡面上（超过5度），挂到驻车档并松开驻车制动器。确保车辆在驻车锁爪的作用下不会移动。AF20TechnicalTrainingElectricalControl变速箱压力测试孔及连接主油压测试孔AF20TechnicalTrainingElectricalControl单向离合器F1:1.内套2.止推垫3.单向离合器4.外套5.止推垫AF20TechnicalTrainingElectricalControl离合器C1及C2:1.卡簧2.C1法兰片3.C1摩擦片4.C1刚片5.卡簧6.C2法兰片7.C2摩擦片8.C2刚片9.卡簧10.回位弹簧11.O型密封圈12.C2活塞13.C1活塞14.驱动轴15.套16.止推轴承17.密封圈AF20TechnicalTrainingElectricalControl离合器C3及单向离合器F3:1.卡簧2.法兰片3.C3摩擦片4.C3刚片5.卡簧6.回位弹簧7.密封圈8.C3活塞9.离合器外壳10.止推轴承11.回位弹簧12.单向离合器F313.F3外套支架AF20TechnicalTrainingElectricalControl油泵及制动器B1:1.密封圈2.油泵外壳3.定位销4.被动齿轮5.主动齿轮6.O型密封圈7.油泵隔板8.转子轴9.B1摩擦片10.卡簧11.制动法兰片12.B1刚片13.止推垫14.卡簧15.回位弹簧16.B1活塞密封圈17.B1活塞AF20TechnicalTrainingElectricalControl油泵及制动器B2:1.密封圈2.油泵外壳3.定位销4.被动齿轮5.主动齿轮6.O型密封圈7.油泵隔板8.转子轴9.B2摩擦片10.卡簧11.B2制动法兰片12.B1刚片13.B2制动法兰片14.回位弹簧15.B2活塞密封圈16.B2活塞AF20TechnicalTrainingElectricalControl制动器B3及单向离合器F2:1.O型密封圈2.B3活塞3.回位弹簧4.卡簧5.法兰(AF22)6.B3刚片7.B3摩擦片8.法兰9.卡簧