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<h1 class="h1">柴油机冷却水温度高的原因及处理方法</span></h1>
<div class="text">发布来源：重康电力（深圳）有限公司　　发布日期: 2024-06-07　　访问量:1667</div>
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<p><span style="font-family:微软雅黑;font-size:10.5pt">摘要：</span><span style="font-family:微软雅黑;font-size:10.5pt">柴油发电机</span><span style="font-family:微软雅黑;font-size:10.5pt">的冷却系多为冷却水强制循环系统，即利用水泵增加冷却液的压力，强制冷却液在</span><span style="font-family:微软雅黑;font-size:10.5pt">柴油机</span><span style="font-family:微软雅黑;font-size:10.5pt">中循环流动。</span><span style="font-family:微软雅黑;font-size:10.5pt">柴油机</span><span style="font-family:微软雅黑;font-size:10.5pt">冷却系统是维持</span><span style="font-family:微软雅黑;font-size:10.5pt">柴油机</span><span style="font-family:微软雅黑;font-size:10.5pt">处在正常工作温度的关键系统，此系统出现故障往往会造成</span><span style="font-family:微软雅黑;font-size:10.5pt">柴油机</span><span style="font-family:微软雅黑;font-size:10.5pt">无法正常工作、机件损害或粘缸抱瓦等恶性事故。</span><span style="font-family:微软雅黑;font-size:10.5pt">柴油机</span><span style="font-family:微软雅黑;font-size:10.5pt">冷却系常见的故障就是</span><span style="font-family:微软雅黑;font-size:10.5pt">柴油机</span><span style="font-family:微软雅黑;font-size:10.5pt">温度过高，故障部位主要有水泵、散热器、冷却风扇、节温器、</span><span style="font-family:微软雅黑;font-size:10.5pt">柴油机</span><span style="font-family:微软雅黑;font-size:10.5pt">机体和气缸盖中的水套以及附属装置等。</span><span style="font-family:微软雅黑;font-size:10.5pt"></span></p><p><span style="font-family:微软雅黑;font-size:10.5pt">&nbsp;</span></p><p><b><span style="font-family:微软雅黑;font-size:10.5pt">一、柴油机冷却系统异常的影响</span></b><b><span style="font-family:微软雅黑;font-size:10.5pt"></span></b></p><p><b><span style="font-family:微软雅黑;font-size:10.5pt">1、柴油机过热的影响</span></b><b><span style="font-family:微软雅黑;font-size:10.5pt"></span></b></p><p style="text-indent:21.0000pt"><span style="font-family:微软雅黑;font-size:10.5pt">在</span><span style="font-family:微软雅黑;font-size:10.5pt">柴油机</span><span style="font-family:微软雅黑;font-size:10.5pt"><span>工作时，气缸内的可燃混合气迅速燃烧，其工作温度可达</span><span>2000℃以上。同时高速运动的各机件之间也会由于动摩擦而产生大量的热量。这些热量都会使缸体、活塞、缸盖等部件温度上升。高温容易造成</span></span><span style="font-family:微软雅黑;font-size:10.5pt">柴油机</span><span style="font-family:微软雅黑;font-size:10.5pt">各机件产生热变形，使</span><span style="font-family:微软雅黑;font-size:10.5pt">柴油机</span><span style="font-family:微软雅黑;font-size:10.5pt">各零部件的机械强度降低，热膨胀过大也会使正常的配合间隙发生改变。如果不及时给</span><span style="font-family:微软雅黑;font-size:10.5pt">柴油机</span><span style="font-family:微软雅黑;font-size:10.5pt">适当的冷却，不仅会使</span><span style="font-family:微软雅黑;font-size:10.5pt">柴油机</span><span style="font-family:微软雅黑;font-size:10.5pt">过热导致</span><span style="font-family:微软雅黑;font-size:10.5pt">柴油机</span><span style="font-family:微软雅黑;font-size:10.5pt">动力下降，混合气燃烧不正常，机油很快变质，零件磨损加剧，更严重时会造成活塞粘缸、曲轴抱瓦等恶性</span><span style="font-family:微软雅黑;font-size:10.5pt">柴油机</span><span style="font-family:微软雅黑;font-size:10.5pt">损伤。</span><span style="font-family:微软雅黑;font-size:10.5pt"></span></p><p><b><span style="font-family:微软雅黑;font-size:10.5pt">2、柴油机过冷的影响</span></b><span style="font-family:微软雅黑;font-size:10.5pt"></span></p><p style="text-indent:21.0000pt"><span style="font-family:微软雅黑;font-size:10.5pt">如果冷却过度，</span><span style="font-family:微软雅黑;font-size:10.5pt">柴油机</span><span style="font-family:微软雅黑;font-size:10.5pt">温度过低，又会使机油粘度增大，摩擦磨损加剧，造成燃油雾化不良</span><span style="font-family:微软雅黑;font-size:10.5pt">柴油机</span><span style="font-family:微软雅黑;font-size:10.5pt">动力下降及润滑性能变差。因此，</span><span style="font-family:微软雅黑;font-size:10.5pt">柴油机</span><span style="font-family:微软雅黑;font-size:10.5pt">工作时必须有适宜的工作温度，不能过高也不能过低。这就需要</span><span style="font-family:微软雅黑;font-size:10.5pt">柴油机</span><span style="font-family:微软雅黑;font-size:10.5pt">要有适宜的冷却系统，从而保证</span><span style="font-family:微软雅黑;font-size:10.5pt">柴油机</span><span style="font-family:微软雅黑;font-size:10.5pt">要始终处在较适宜的温度状态下工作。</span><span style="font-family:微软雅黑;font-size:10.5pt"></span></p><p style="text-indent:21.0000pt"><span style="font-family:微软雅黑;font-size:10.5pt">目前</span><span style="font-family:微软雅黑;font-size:10.5pt">柴油机</span><span style="font-family:微软雅黑;font-size:10.5pt">常用的冷却方式有风冷和水冷，</span><span style="font-family:微软雅黑;font-size:10.5pt">柴油发电机</span><span style="font-family:微软雅黑;font-size:10.5pt">较为常见的冷却方式是水冷。</span><span style="font-family:微软雅黑;font-size:10.5pt">柴油机</span><span style="font-family:微软雅黑;font-size:10.5pt">冷却系统的主要作用是把</span><span style="font-family:微软雅黑;font-size:10.5pt">柴油机</span><span style="font-family:微软雅黑;font-size:10.5pt">受热零部件吸收的部分热量及时散发出去，保证</span><span style="font-family:微软雅黑;font-size:10.5pt">柴油机</span><span style="font-family:微软雅黑;font-size:10.5pt">始终处在较适宜的温度状态下工作。</span><span style="font-family:微软雅黑;font-size:10.5pt"></span></p><p style="text-indent:21.0000pt"><span style="font-family:微软雅黑;font-size:10.5pt"><br></span></p><p style="text-align:center;text-indent:21pt"><span style="font-family:微软雅黑;font-size:10.5pt"><img src="//c.b2b168.net/photo/2024/06/07/02/202406070236161139344.png" alt="柴油机冷却系统结构原理示意图"><br></span></p><p style="text-align:center;text-indent:21pt"><span style="font-family:微软雅黑;font-size:10.5pt"><span style="text-wrap:*">图1&nbsp; 柴油机冷却系统结构原理示意图</span><br></span></p><p style="text-indent:21.0000pt"><span style="font-family:微软雅黑;font-size:10.5pt"><br></span></p><p><b><span style="font-family:微软雅黑;font-size:10.5pt">二、柴油机水温异常故障诊断方法</span></b><b><span style="font-family:微软雅黑;font-size:10.5pt"></span></b></p><p style="text-indent:21.0000pt"><span style="font-family:微软雅黑;font-size:10.5pt">柴油机</span><span style="font-family:微软雅黑;font-size:10.5pt">冷却系常见的故障有</span><span style="font-family:微软雅黑;font-size:10.5pt">柴油机</span><span style="font-family:微软雅黑;font-size:10.5pt">温度过高、</span><span style="font-family:微软雅黑;font-size:10.5pt">柴油机</span><span style="font-family:微软雅黑;font-size:10.5pt">温度过低、冷却液消耗异常等，其中</span><span style="font-family:微软雅黑;font-size:10.5pt">柴油机</span><span style="font-family:微软雅黑;font-size:10.5pt">温度过高尤为常见，下面我们就谈谈</span><span style="font-family:微软雅黑;font-size:10.5pt">柴油机</span><span style="font-family:微软雅黑;font-size:10.5pt">冷却液充足但温度过高的故障诊断方法。</span><b><span style="font-family:微软雅黑;font-size:10.5pt"></span></b></p><p><b><span style="font-family:微软雅黑;font-size:10.5pt">1</span></b><b><span style="font-family:微软雅黑;font-size:10.5pt">、</span></b><b><span style="font-family:微软雅黑;font-size:10.5pt">故障现象</span></b><b><span style="font-family:微软雅黑;font-size:10.5pt"></span></b></p><p><span style="font-family:微软雅黑;font-size:10.5pt">（</span><span style="font-family:微软雅黑;font-size:10.5pt">1</span><span style="font-family:微软雅黑;font-size:10.5pt">）柴油机</span><span style="font-family:微软雅黑;font-size:10.5pt">冷却液充足，但</span><span style="font-family:微软雅黑;font-size:10.5pt">运行</span><span style="font-family:微软雅黑;font-size:10.5pt">过程中水温表指示的冷却液温度超过规定值，</span><span style="font-family:微软雅黑;font-size:10.5pt">柴油机</span><span style="font-family:微软雅黑;font-size:10.5pt">工作无力。</span><span style="font-family:微软雅黑;font-size:10.5pt"></span></p><p><span style="font-family:微软雅黑;font-size:10.5pt">（</span><span style="font-family:微软雅黑;font-size:10.5pt">2</span><span style="font-family:微软雅黑;font-size:10.5pt">）</span><span style="font-family:微软雅黑;font-size:10.5pt">柴油发电机组</span><span style="font-family:微软雅黑;font-size:10.5pt">运行</span><span style="font-family:微软雅黑;font-size:10.5pt">过程中温度正常，</span><span style="font-family:微软雅黑;font-size:10.5pt">一旦</span><span style="font-family:微软雅黑;font-size:10.5pt">停车冷却液会立即沸腾。</span><span style="font-family:微软雅黑;font-size:10.5pt"></span></p><p><b><span style="font-family:微软雅黑;font-size:10.5pt">2</span></b><b><span style="font-family:微软雅黑;font-size:10.5pt">、</span></b><b><span style="font-family:微软雅黑;font-size:10.5pt">故障可能部位</span></b><b><span style="font-family:微软雅黑;font-size:10.5pt"></span></b></p><p><span style="font-family:微软雅黑;font-size:10.5pt">（</span><span style="font-family:微软雅黑;font-size:10.5pt">1</span><span style="font-family:微软雅黑;font-size:10.5pt">）</span><span style="font-family:微软雅黑;font-size:10.5pt">百叶窗开度不足。百叶窗开度不足会使的通过散热器的冷却气流减少，从而使气流带走散热器里冷却液的热量减少，造成水温过高。</span><span style="font-family:微软雅黑;font-size:10.5pt"></span></p><p><span style="font-family:微软雅黑;font-size:10.5pt">（</span><span style="font-family:微软雅黑;font-size:10.5pt">2</span><span style="font-family:微软雅黑;font-size:10.5pt">）</span><span style="font-family:微软雅黑;font-size:10.5pt">风扇皮带断裂或打滑，造成风扇不转或转速低，使吹向散热器的气流量减少。</span><span style="font-family:微软雅黑;font-size:10.5pt"></span></p><p><span style="font-family:微软雅黑;font-size:10.5pt">（</span><span style="font-family:微软雅黑;font-size:10.5pt">3</span><span style="font-family:微软雅黑;font-size:10.5pt">）</span><span style="font-family:微软雅黑;font-size:10.5pt">散热器出水胶管老化吸瘪或水管内层脱落，会使冷却液的循环速度大大降低，从而使热量不能及时散出。</span><span style="font-family:微软雅黑;font-size:10.5pt"></span></p><p><span style="font-family:微软雅黑;font-size:10.5pt">（</span><span style="font-family:微软雅黑;font-size:10.5pt">4</span><span style="font-family:微软雅黑;font-size:10.5pt">）</span><span style="font-family:微软雅黑;font-size:10.5pt">冷却风扇装反、扇叶角度变小或新换的风扇规格不对，则会使吹向散热器的气流量降低。</span><span style="font-family:微软雅黑;font-size:10.5pt"></span></p><p><span style="font-family:微软雅黑;font-size:10.5pt">（</span><span style="font-family:微软雅黑;font-size:10.5pt">5</span><span style="font-family:微软雅黑;font-size:10.5pt">）冷却风扇</span><span style="font-family:微软雅黑;font-size:10.5pt">不转或风扇转速过低。</span><span style="font-family:微软雅黑;font-size:10.5pt"></span></p><p><span style="font-family:微软雅黑;font-size:10.5pt">（</span><span style="font-family:微软雅黑;font-size:10.5pt">6</span><span style="font-family:微软雅黑;font-size:10.5pt">）</span><span style="font-family:微软雅黑;font-size:10.5pt">节温器失效，大循环水口不开启或开度不足，造成冷却液没有大循环或大循环水流量小。</span><span style="font-family:微软雅黑;font-size:10.5pt"></span></p><p><span style="font-family:微软雅黑;font-size:10.5pt">（</span><span style="font-family:微软雅黑;font-size:10.5pt">7</span><span style="font-family:微软雅黑;font-size:10.5pt">）</span><span style="font-family:微软雅黑;font-size:10.5pt">水套内水垢过多，或分水管堵塞，分水不畅。</span><span style="font-family:微软雅黑;font-size:10.5pt"></span></p><p><span style="font-family:微软雅黑;font-size:10.5pt">（</span><span style="font-family:微软雅黑;font-size:10.5pt">8</span><span style="font-family:微软雅黑;font-size:10.5pt">）</span><span style="font-family:微软雅黑;font-size:10.5pt">散热器内心管堵塞或散热片倾倒过多。</span><span style="font-family:微软雅黑;font-size:10.5pt"></span></p><p><span style="font-family:微软雅黑;font-size:10.5pt">（</span><span style="font-family:微软雅黑;font-size:10.5pt">9</span><span style="font-family:微软雅黑;font-size:10.5pt">）</span><span style="font-family:微软雅黑;font-size:10.5pt">水泵损坏或水泵皮带断裂、打滑，造成水泵泵水量降低，冷却液不循环或循环速度过慢。</span><span style="font-family:微软雅黑;font-size:10.5pt"></span></p><p><span style="font-family:微软雅黑;font-size:10.5pt">（</span><span style="font-family:微软雅黑;font-size:10.5pt">10</span><span style="font-family:微软雅黑;font-size:10.5pt">）</span><span style="font-family:微软雅黑;font-size:10.5pt">气缸垫被烧穿或缸体、缸盖出现裂缝，使燃烧室与冷却系统串通，造成高温高压气体进入冷却系。</span><span style="font-family:微软雅黑;font-size:10.5pt"></span></p><p><span style="font-family:微软雅黑;font-size:10.5pt">（</span><span style="font-family:微软雅黑;font-size:10.5pt">11</span><span style="font-family:微软雅黑;font-size:10.5pt">）</span><span style="font-family:微软雅黑;font-size:10.5pt">点火时间过迟，混合气燃烧后使转换为机械能能量降低转换为热能的能量增多。</span><span style="font-family:微软雅黑;font-size:10.5pt"></span></p><p><span style="font-family:微软雅黑;font-size:10.5pt">（</span><span style="font-family:微软雅黑;font-size:10.5pt">12</span><span style="font-family:微软雅黑;font-size:10.5pt">）</span><span style="font-family:微软雅黑;font-size:10.5pt">混合气过稀或过浓。都会影响的混合气的燃烧速度，使机械能的转换效率降低，热能转换效率增加。</span><span style="font-family:微软雅黑;font-size:10.5pt"></span></p><p><span style="font-family:微软雅黑;font-size:10.5pt">（</span><span style="font-family:微软雅黑;font-size:10.5pt">13</span><span style="font-family:微软雅黑;font-size:10.5pt">）</span><span style="font-family:微软雅黑;font-size:10.5pt">水温表及线路故障。</span><span style="font-family:微软雅黑;font-size:10.5pt"></span></p><p><b><span style="font-family:微软雅黑;font-size:10.5pt">3</span></b><b><span style="font-family:微软雅黑;font-size:10.5pt">、</span></b><b><span style="font-family:微软雅黑;font-size:10.5pt">故障诊断与排除</span></b><b><span style="font-family:微软雅黑;font-size:10.5pt"></span></b></p><p><span style="font-family:微软雅黑;font-size:10.5pt">（</span><span style="font-family:微软雅黑;font-size:10.5pt">1</span><span style="font-family:微软雅黑;font-size:10.5pt">）</span><span style="font-family:微软雅黑;font-size:10.5pt">首先检查百叶窗开度是否充足。若百叶窗开度不足应检查连杆机构运动是否灵活或调整是否得当。</span><span style="font-family:微软雅黑;font-size:10.5pt"></span></p><p><span style="font-family:微软雅黑;font-size:10.5pt">（</span><span style="font-family:微软雅黑;font-size:10.5pt">2</span><span style="font-family:微软雅黑;font-size:10.5pt">）</span><span style="font-family:微软雅黑;font-size:10.5pt">若百叶窗开度充足，则应检查冷却风扇转速是否过低。若风扇转速太低，则应检查风扇皮带是否因过松、油污、磨损过甚而打滑；检查硅油风扇离合器工作是否良好；电控风扇的热敏开关、直流电动机、控制电路工作是否良好。</span><span style="font-family:微软雅黑;font-size:10.5pt"></span></p><p><span style="font-family:微软雅黑;font-size:10.5pt">（</span><span style="font-family:微软雅黑;font-size:10.5pt">3</span><span style="font-family:微软雅黑;font-size:10.5pt">）</span><span style="font-family:微软雅黑;font-size:10.5pt">风扇转速正常，则应检查风扇的风量。其方法是：风扇转动状态下，将一张薄纸放在散热器前面，若纸被牢牢吸住，说明风量足够。否则应检查风扇叶片方向是否装反；风扇叶片角度是否正确；集风罩是否损坏等。</span><span style="font-family:微软雅黑;font-size:10.5pt"></span></p><p><span style="font-family:微软雅黑;font-size:10.5pt">（</span><span style="font-family:微软雅黑;font-size:10.5pt">4</span><span style="font-family:微软雅黑;font-size:10.5pt">）</span><span style="font-family:微软雅黑;font-size:10.5pt">在风量充足的条件下，用手触散热器和</span><span style="font-family:微软雅黑;font-size:10.5pt">柴油机</span><span style="font-family:微软雅黑;font-size:10.5pt">的温度。若散热器温度低，而</span><span style="font-family:微软雅黑;font-size:10.5pt">柴油机</span><span style="font-family:微软雅黑;font-size:10.5pt">温度高，说明冷却液循环不良。</span><span style="font-family:微软雅黑;font-size:10.5pt"></span></p><p style="text-indent:21.0000pt"><span style="font-family:微软雅黑;font-size:10.5pt">逐渐提高</span><span style="font-family:微软雅黑;font-size:10.5pt">柴油机</span><span style="font-family:微软雅黑;font-size:10.5pt">的转速，观察散热器出水胶管是否被吸瘪。若胶管被吸瘪，说明散热器堵塞严重，应进行清洗。</span><span style="font-family:微软雅黑;font-size:10.5pt"></span></p><p style="text-indent:21.0000pt"><span style="font-family:微软雅黑;font-size:10.5pt">散热器出水管良好，则应散热器的进水管，提高</span><span style="font-family:微软雅黑;font-size:10.5pt">柴油机</span><span style="font-family:微软雅黑;font-size:10.5pt">的转速，冷却液应有力的排出。否则说明水泵或节温器有故障。拆下节温器重复试验，若排水量明显增多，则应进一步检查节温器；若排水量不变，则应进一步检查水泵的工作性能、气缸体内的水垢是否过多等。</span><span style="font-family:微软雅黑;font-size:10.5pt"></span></p><p><span style="font-family:微软雅黑;font-size:10.5pt">（</span><span style="font-family:微软雅黑;font-size:10.5pt">5</span><span style="font-family:微软雅黑;font-size:10.5pt">）</span><span style="font-family:微软雅黑;font-size:10.5pt">散热器进水管冷却液排出有力，则应检查散热器各部温度是否均匀。如果散热器冷热极不均匀，则应检查散热器内心管是否堵塞。</span><span style="font-family:微软雅黑;font-size:10.5pt"></span></p><p><span style="font-family:微软雅黑;font-size:10.5pt">（</span><span style="font-family:微软雅黑;font-size:10.5pt">6</span><span style="font-family:微软雅黑;font-size:10.5pt">）</span><span style="font-family:微软雅黑;font-size:10.5pt">若以上检查正常，在水温过高的同时，</span><span style="font-family:微软雅黑;font-size:10.5pt">柴油机</span><span style="font-family:微软雅黑;font-size:10.5pt">动力明显下降，则应检查点火时间是否正确；混合气是否过稀或过浓；进、排气门间隙是否过大；燃烧室积碳是否过多等。</span><span style="font-family:微软雅黑;font-size:10.5pt"></span></p><p><span style="font-family:微软雅黑;font-size:10.5pt">（</span><span style="font-family:微软雅黑;font-size:10.5pt">7</span><span style="font-family:微软雅黑;font-size:10.5pt">）</span><span style="font-family:微软雅黑;font-size:10.5pt">对于长期未清洗水垢的</span><span style="font-family:微软雅黑;font-size:10.5pt">柴油机</span><span style="font-family:微软雅黑;font-size:10.5pt">，应检查水套内积垢是否过多。检查方法是：将冷却液全部放出，再加满冷却液并计量注入的体积。若比规定值明显减少，则减少的体积即为水垢所占据的容积。若水垢过多，应清洗。</span><span style="font-family:微软雅黑;font-size:10.5pt"></span></p><p><span style="font-family:微软雅黑;font-size:10.5pt">（</span><span style="font-family:微软雅黑;font-size:10.5pt">8</span><span style="font-family:微软雅黑;font-size:10.5pt">）</span><span style="font-family:微软雅黑;font-size:10.5pt">若</span><span style="font-family:微软雅黑;font-size:10.5pt">柴油机</span><span style="font-family:微软雅黑;font-size:10.5pt">及冷却液温度正常，而水温表指示水温过高，则应检查水温表、传感器及控制电路是否正常。</span><span style="font-family:微软雅黑;font-size:10.5pt"></span></p><p><b><span style="font-family:微软雅黑;font-size:10.5pt"><br></span></b></p><p style="text-align:center"><b><span style="font-family:微软雅黑;font-size:10.5pt"><img src="//c.b2b168.net/photo/2024/06/07/02/202406070236532376074.png" alt="柴油机冷却系统水路流向示意图"><br></span></b></p><p style="text-align:center"><span style="font-family:微软雅黑;font-size:10.5pt"><span style="text-wrap:*">图2&nbsp; 柴油机冷却系统水路流向示意图</span><br></span></p><p><b><span style="font-family:微软雅黑;font-size:10.5pt"><br></span></b></p><p><b><span style="font-family:微软雅黑;font-size:10.5pt">总结：</span></b><b><span style="font-family:微软雅黑;font-size:10.5pt"></span></b></p><p style="text-indent:21.0000pt"><span style="font-family:微软雅黑;font-size:10.5pt">总之，柴油机水温过高是一种常见的故障，可能由多种原因引起。对于该故障的分析，可以通过检查冷却液循环系统、散热器、风扇、热交换器等部件，找出问题所在，并采取相应的措施进行修复。同时，定期保养和维护柴油机也是预防该故障发生的重要手段。只有保持冷却系统的正常运行，才能确保柴油机的正常工作和使用寿命。</span><span style="font-family:微软雅黑;font-size:10.5pt"></span></p></div><a href="http://www.fdjhs.cn/" target="_blank">http://www.fdjhs.cn</a>
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