【填空题】
33.在电客车制动时，牵引电传动系统优先进行再生制动，最大限度地将能量返回电网___
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【简答题】
双塔干燥器功能检查内容有哪些？（摘自年检规程）
答：双塔干燥器工作周期为一分钟干燥一分钟再生，共两分钟。由干燥状态向再生状态（或由再生状态向干燥状态）转换时会向外部排气，监察时应听到排气声音，并观察干燥器内侧指示灯显示情况，绿色长亮为正常工作状态，绿色闪烁或无光亮为故障状态。
【简答题】
长沙轨道交通1号线制动系统中电子中继阀主要由哪些部件组成？（摘自车辆检修工教材）
答：1）中继阀（RLY）
2）紧急电磁阀（EMTMV）
3）紧急切换阀（EMTV）
4）大流量制动电磁阀（AMVH）和小流量制动电磁阀（AMVL）
5）大流量缓解电磁阀（RMVH）和小流量缓解电磁阀（RMVL）
6）制动控制压力传感器（BCCT）
【简答题】
简述长沙地铁1号线空压机油气室作用。（摘自车辆检修工教材）
答：油气室构成主机机体的一部分,它的作用是：一是储存润滑油，二是压缩空气的含油气体，在油气室经撞击转折使油、气分离（称粗分），这时气体中的油液99%以上被分离。
【简答题】
简述长沙地铁1号线采用的风源系统结构及功能（摘自车辆检修工教材）
答：整体吊架、空气压缩机、空气净化处理装置和电控单元四大主要部件构成。
风源系统整体吊架连接支撑风源系统上各零部件，并与轨道车辆的底架相连。
空气压缩机采用了由三相交流电机驱动的螺杆空压机，它是压缩空气的产生装置。
空气净化处理单元主要由吸附式干燥器、灰尘过滤器、气水分离器、高效过滤器等组成。空压机产生的压缩空气，通过气、水分离器、高效过滤器过滤后再经干燥器进行干燥，然后由灰尘过滤器收集压缩空气自带的和干燥过程中产生的灰尘，最后将干燥清洁的空气供给机车车辆风缸。
控制单元由压力控制器、空气净化处理单元控制电路、外部供风控制开关组成。风源系统将各控制信号传递给机车车辆控制系统，从而实现对整个风源系统的控制。
【简答题】
简述长沙地铁1号线螺杆式压缩机中的最小压力阀作用。（摘自车辆检修工教材）
答：最小压力阀安装在机体上，位于油细分离器座的后部，初始开启压力为0.4～0.6MPa，其功能有三：
1）空压机运行之初，压力低于0.6MPa时，阀板处于关闭状态，气体并无输出，以便于保证空压机优先建立起润滑油循环所需之压力，确保系统冷却、密封、润滑之需要。
2）压力超过0.6MPa，阀板开启，这可降低流过油气分离器的空气流速，确保油细分离效果，保护油细分离器不会因压差太大而受损。
3）停机时，空压机泄压，系统压力下降，在外部空气压力和弹簧的作用下阀板关闭，以防止系统外高压气回流，起到止回作用。
【简答题】
客室门系统锁闭单元各个工况下的工作过程？（摘自维修手册）
答：（1）关门状态下：制动盘与飞轮咬合，飞轮被制动，此时无法开门。
（2）电动开门时：电磁锁闭装置得电，齿轮盘与飞轮分离，丝杠和飞轮可以朝开门方向转动，实现开门。
（3）手动解锁时：可通过转动紧急操作装置拉动钢丝绳，在解锁板的作用下齿轮盘与飞轮分离，同时触发紧急解锁开关实现手动解锁。手动解锁后若要实现开门则紧急操作装置必需保持在“解锁”位。
【简答题】
试分析空调预冷模式：（摘自维修手册）
答：如果系统一开机即检测到温度Ti>27℃，则执行预冷模式。新风阀关闭，回风阀打开，机组执行全回风模式。当接收到MVB 网络预冷结束命令，或者当室内温度达到目标温度时，或者预冷持续15 分钟后，预冷状态结束，此时系统新风阀，回风阀均打开。
【简答题】
哪些情况下，TCMS 将取消发向所有的DCU 的牵引指令及牵引/制动设定值？（摘自维修手册）
答：（1）司机室连锁故障；
（2）牵引系统方向故障；
（3）车门未全部关闭，且无“车门旁路”信号；
（4）列车停放制动未缓解，且无“停放制动缓解旁路”信号；
（5）列车安全环路断开或者列车完整性环路断开；
（6）制动系统触发紧急制动（针对紧急制动列车线到某个制动系统的硬线断落这种情况）；
（7）列车发出牵引指令后，5秒内列车仍然不能缓解所有制动。
（8）列车总风管压力低于5.5bar，且无“总风压力旁路”信号；
（9）列车速度大于 5Km/h，非制动工况下检测到列车制动未缓解
【简答题】
TCMS 可以对列车运行的相关参数进行积累计算和保存，便于列车检修和维护。记录的参数包括哪些内容？（摘自维修手册）
答：（1）列车累计运行里程（km）；
（2）列车日运行里程（km）；
（3）列车累计牵引能耗（kWh）；
（4）列车累计电制动能耗（kWh）；
（5）列车累计辅助系统能耗（kWh）；
（6）TCMS 系统累计运行时间（h）。
【简答题】
请阐述高速断路器以及隔离开关的功能。（摘自维修手册）
答：（1）、高速断路器的功能：当在电路中出现严重的干扰情况时，比如过流、牵引逆变器故障或短路等，高速断路器能安全断开牵引设备与接触电网的连接，以此来保护牵引逆变器等设备。、隔离开关的功能：一个是用于车间电源转换，另一个则是高速断路器前的隔离接地
【简答题】
导致高速断路器保护的故障有哪些？（摘自维修手册）
答：主电路电器部件故障、网压或直流电压过压、直流侧电流过流、主电路接地、IGBT 元件故障、网络通信故障、DCU 故障、110V 控制电源失电等时，高速断路器断开，实现主电路的故障保护。同时高速断路器能对检测出的过电流进行快速响应，以实现主电路短路瞬时保护。
【简答题】
简述辅助电源系统的充放电回路的功能？（摘自维修手册）
答：SIV 经输入滤波电路后，电容先通过充电电阻预充电，当其电压充电到一定电压值时闭合短接接触器而短接充电电阻，从而减小电容器的充电电流，降低对电容器的冲击，延长电容器的使用寿命。
电容器放电电路由电容器串联放电电阻（R2）构成，串联放电电阻将电容器电压在5 分钟内放电到50V以下。
【简答题】
简述辅助电源系统的“逆变器模块超温保护”功能（摘自维修手册）
答：检测IGBT 逆变器模块散热器上的85℃温度继电器状态，当继电器触点断开时保护动作；5s 后自动重新启动。如果相同的故障在60s 内再次出现，SIV 停止运行而被锁定。
【简答题】
简述辅助电源系统的“输入电压过压保护”保护功能（摘自维修手册）
答：检测输入电容器端电压和网压，当电容器端电压或网压检测值高于2050V 时，保护动作；当网压回复到1750V以下并保持3s 以上时自动重启。
【简答题】
DCU软件主要由如下控制功能软件组成？（摘自维修手册）
答：DCU软件主要由如下控制功能软件组成：
（1）、变流器逻辑保护及特性控制。
（2）、速度处理及斩波控制。
（3）、粘着利用控制。
（4）、牵引电机控制。
【简答题】
怎样拆装渡板和渡板连杆（摘自维修手册）
答：先拆贯通道侧护板，再拉开渡板两边拉环，使渡板连杆轴脱离渡板，然后拆下渡板。拆卸渡板连杆时，掀开踏板页，拆卸渡板连杆安装销轴，即可完成渡板连杆拆卸。
【简答题】
怎样拆装贯通道侧护板（摘自维修手册）
答：上护板安装座组成带有快速锁闭机机构只要将拉手提起旋转 60 度就可拆下侧护板上端连接。并向外拉护板组成， 形成约 20°角时，将护板从底部抽出。
【简答题】
在年检作业中，如何清洗新风格栅、蒸发器、冷凝器和冷凝腔内部。（摘自年检规程）
答：（1）、先用翅片清洗剂喷洒于新风格栅、蒸发器、冷凝器上，10分钟后用高压清洗机对新风格栅、蒸发器、冷凝器外观进行清洗，要求清洗后干净整洁。
（2）、用高压清洗机对新风格栅、蒸发器、冷凝器外观进行清洗，要求清洗后干净整洁。
【简答题】
年检作业动态调试中，需要做哪些旁路试验？（摘自年检规程）
答：（1）门零速旁路功能检查；
（2）门关好旁路功能检查；
（3）所有制动缓解旁路功能检查；
（4）停放制动旁路功能试验；
（5）警惕旁路功能。
【简答题】
根据年检规程，动态调试作业中，如何进行紧急牵引实验？（摘自年检规程）
答：打下任意车一个I/O模块（41-F101）开关，将紧急牵引（=22-S101）开关置合位，列车应能以紧急牵引模式运行。
【简答题】
在年检作业中，如何检查高速断路器？（摘自年检规程）
答：（1）检查高速断路器无损坏、无污垢；
（2）底座螺栓防松线清晰无错位；
（3）高速断路器灭弧罩安装紧固螺栓防松线清晰无错位；
（4）辅助触点端盖内六角紧固螺栓防松线清晰无错位；
（5）高速断路器进、出线排紧固螺栓齐全，防松线清晰无错位。
【简答题】
在年检作业中，如何检查接触器(KM1、KM2)状态？（摘自年检规程）
答：（1）拆下灭弧罩，灭弧罩应无机械损坏或金属粉尘，否则更换或清除；
（2）接触器主触头外观良好、动作灵活、安装紧固。
【简答题】
在年检作业中，如何检查牵引电机？（摘自年检规程）
答：（1）检查进气口和排气口，进、出风滤网紧固螺栓防松线清晰无错位；滤网无堵塞。
（2）检查牵引电机悬挂及电缆、电源盒状态，电机悬挂件防松线清晰无错位；电机机座无裂纹；电缆、电源盒外观无破损、放电烧痕，三相电缆固定螺栓无松动。
（3）检查温度传感器和速度传感器，速度传感器和温度传感器安装稳固，传感器线缆外观无破损、断裂现象。
（4）吹扫进气滤网和出气滤网，用压缩空气清洁进、出气滤网和联轴节。
（5）重新润滑轴承，用壳牌能得力（Shell RETINAX）LX2抗摩擦轴承润滑脂重新润滑深沟球轴承（约 19 g）、圆柱滚子轴承（约 16 g）。
【简答题】
怎样更换齿轮箱油？（摘自维修手册）
答：1、钳去注油螺塞放油螺塞的防松镀锌钢丝;
2、排油前用抹布清洁齿轮箱排油孔及注油孔的周边,要求无积尘 ;
3、排油应在列车回库30分钟后进行,如果油温还较高,要注意安全防止烫伤。 确认齿轮箱废油已全部排出(以不连续滴油为标准 )
4、着重检查注油螺塞、放油螺塞上是否有较大铁片或金属颗粒吸附,如有则需对齿轮箱做进一步检查。注油螺塞、放油螺塞及组合密封垫圈安装前应清理干净;
5、注油螺塞的拧紧力扭为80N· m,放油螺塞的拧紧力扭为70N·m;
6、加注新齿轮箱油后,齿轮箱油位处于油标中刻度线和上刻度线之间(约 3L)。 对注油螺塞、放油螺塞做好防松标识
【简答题】
简述客室控制机柜上电后的状态（摘自维修手册）
答：（1）Power模块DC110V和DC24V指示灯点亮
（2）客室主控DC24V指示灯点亮
（3）差分模块Power指示灯常亮
（4）影视播放模块POW指示灯常亮
（5）功放模块POWER指示灯常亮
【简答题】
简述司机室广播主机上电后的状态。（摘自维修手册）
答：（1）Power模块DC110V和DC24V指示灯点亮；
（2）PA主控模块Power指示灯常亮；
（3）MVB模块POW指示灯常亮。
（4）录音模块POWER指示灯常亮。
【简答题】
简述年检中人工广播功能检测的具体操作要求。（摘自维修手册）
答：（1）按下主司机室控制台广播控制盒面板上的<人工广播>按钮，按钮上方的LED变亮，人工广播功能被激活。
（2）按下麦克风上的PTT按钮，进行人工语音广播，确认各客室均有相应的广播。
（3）松开麦克风上的PTT按钮，<人工广播>绿色显示保持为挂起状态，30秒保持会自动挂断。
（4）按下绿色显示人工广播按钮，熄灭为挂断。
【简答题】
简述年检中紧急对讲功能检测的具体操作要求。（摘自维修手册）
答：（1）逐个按下客室内紧急报警器，检查下按时有无卡滞；
（2）观察HMI上显示位置正常；
（3）报警声音响起，按下广播控制盒面板上的<乘客对讲>按钮，对讲功能正常。
【简答题】
简述辅逆箱中电容器充放电单元的组成和功能。（摘自维修手册）
答：电容器充放电单元由接触器(KM1、KM2)及充放电电阻(R1)、固定放电电阻(R4)等组成，用于主电路支撑电容器（ C）的充、放电
【简答题】
请简述DCU初始化过程？（摘自维修手册）
答：（1）DCU上电后，SMC通过握手检查DCU内部CPU插件之间通信状态，通信状态正常，则进入下一步初始化过程，否则处于等待握手状态；
（2）SMC首先不允许合主断，发充电接触器和短接接触器断开命令，使外部接触器处于断开的安全状态；
（3）对电机信号发故障清除命令，通过脉冲转换插件对IGBT模块发出故障清除命令；
（4）故障清除命令执行完成后，系统初始化完成。
【简答题】
在什么情况下，SMC过压斩波允许有效？（摘自维修手册）
答：（1）列车非零速
（2）无制动电阻超温故障（包括风压故障和风扇继电器断开）
（3）短接接触器状态反馈为闭合已达0.5s
（4）无快速放电命令
【简答题】
当那些条件同时满足时，TCMS通过DXM输出“扩展供电”指令（高电平有效）：（摘自维修手册）
答：检测到一台SIV通信故障、380V输出不正常或者SIV的KMA继电器未闭合 ；向空调发送减载指令 ；如果在15S内接收不到空调完成减载的反馈，再将空调设置为通风模式（空调在与网络通信中断的情况下，必须保证不得处于全载工况） ；当空调处于半载或者通风工况下， TCMS通过DXM输出“扩展供电”指令（高电平有效）SIV恢复正常工作后，TCMS立即撤销“扩展供电”指令，5S后再撤销“空调减载”指令TCMS发出“扩展供电”指令后1秒内收不到“扩展供电反馈”信号，TCMS报“扩展供电接触器故障”。
【简答题】
请阐述高速断路器以及隔离开关的功能。（摘自维修手册）
答：高速断路器的功能：当在电路中出现严重的干扰情况时，比如过流、牵引逆变器故障或短路等，高速断路器能安全断开牵引设备与接触电网的连接，以此来保护牵引逆变器等设备。
隔离开关的功能：一个是用于车间电源转换，另一个则是高速断路器前的隔离接地。
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