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【判断题】
虽然柴油机的紧急停车不会影响柴油机使用寿命,也不宜无故按动紧急停车按钮
A. 对
B. 错
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答案
B
解析
暂无解析
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【判断题】
增压器进气道帆布过松,会造成柴油机的增压器喘振
A. 对
B. 错
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柴油机负荷时间过长,是造成水温高的原因之一
A. 对
B. 错
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柴油机油、水温度低是造成柴油机敲缸的原因之一
A. 对
B. 错
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致使机油乳化的原因,主要是机油内含水量较高
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由于喷油器雾化不良,燃油系统有空气,活塞刮油环反装或刮油性能差,均会导致柴油机冒黑烟
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高温水系统水管上的温度控制阀漏油,会造成油水互窜,导致膨胀水箱有油
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当柴油机冷却水温度超过88℃时,水温继电器动作,通过中间继电器2ZJ的作用,柴油机卸载
A. 对
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【判断题】
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A. 对
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A. 对
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A. 对
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【判断题】
主机油泵出口压力为550kPa时,调整阀开启压力为550kPa
A. 对
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【判断题】
柴油机在空转时转速正常,加载时转速不正常时,多为喷油泵故障或供油齿条卡滞
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柴油机润滑间隙过大或过小,同样会造成轴颈或轴瓦的拉伤
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A. 对
B. 错
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A. 对
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东风4机车启动接触器QC和主发励磁接触器LC,采用CZO-40/20型电磁接触器
A. 对
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当机车轮对发生空转时,通过空转继电器线圈内的电流达0.1A时,线圈吸合,空转信号灯亮
A. 对
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A. 对
B. 错
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151、所谓主电路接地是指机车主电路带电部分和___相接触。
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152、接地开关DK置于___时,DJ线圈的一端与牵引发电机三相绕组的中性点联接。
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153、东风4机车上接触器QC.LC.YC.YRC线圈均是由启动线圈和___线圈组成。
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154、主发电机的电流互感器LH严禁副边___运行。
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155、防止电动机环火的主要措施是:保持___表面清洁,电刷状态良好,防止电动机负载剧烈变化。
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156、一系悬挂装置采用的是较软的圆弹簧和___及橡胶垫组合。
【填空题】
157、二系悬挂装置是指转向架与___之间的弹簧装置,它的作用是进一步衰减走行部传往机车上部的高频振动。
【填空题】
158、一系悬挂装置位于转向架构架与___之间,其主要作用是缓和来自线路的冲击。
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159、转向架弹性摩擦旁承的功用之一是承受机车上部结构的___ 。
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161、东风4型机车转向架主要起传递___、制动力的作用,并能承受冲击和横向力的作用。
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165、东风4机车辅助传动机械系统主要由前变速箱、___、各传动轴及联轴节组成。
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