“
汽车大部分采用水冷装置给发动机散热，发动机的水冷系统主要有水泵、散热器、冷却风扇、节温器、发动机机体和气缸盖内的水套等组成，水箱也叫热交换器。
在水箱内装有足够的防冻冷却液，发动机在工作过程中会产生很高的热量，通过水泵带动水箱内防冻冷却液在发动机内部循环。当冷却液从发动机机体、气缸盖内的水套壁周围流过，并与水套壁充分接触吸收周围热量将热量带走，然后经节温器进入散热器的进水口，在散热器内的温度很高的冷却液向流过散热器周围的空气散热以降低温度，最后降温后的冷却液经散热器的出水口返回水泵，如此循环。
如果在冷却系统中出现节温器损坏、电子扇损坏、水箱亏水等原因，就会使水箱内的冷却液无法降温，导致水温升高，当达到冷却液的沸点时就会产生大量气泡，一部分面积被气泡所占据，就会使气缸壁周围严重亏水，虽然在水箱内还有冷却液，但是在气缸壁周围却没有足够的水来散热，大大降低了热交换效率，也就无法将气缸中的热量带到水箱散热。
此时气缸内的温度会迅速上升，若不及时将这些过多热量散发掉而仍然持续高负荷驾驶，就会使活塞、活塞环、连杆等部件的强度降低，甚至变形，承受不了正常的负荷，同时也会破坏各零件间的正常间隙，使零件间不能保持正常的油膜，轻则会使发动机拉缸、拉瓦，重则还会使整个发动机损坏甚至报废。
原创文章，作者：cesifu，如若转载，请注明出处：http://www.cesifu.com/article/67706.html
微信扫一扫 
支付宝扫一扫 相关推荐
-
学会这个用车知识，几分钟就可以省出200块了
现在已经是4月了，再过一段时间雨季就要到来了，这时候，车上的一个零件就会发挥重要的作用了，它就是雨刮。 雨天行车雨刮的重要性是毫无疑问的，对行车安全是相当重要，如果雨刮刮不干净，会…
-
东风日产：造车是一场没有终点的马拉松！
在为用户带来更多优质产品的这条“马拉松”赛道上， 东风日产没有终点！ 一年一度的福马，总是被广大跑友列为自己的年度收官之战，这座山明水秀的城市总是能为广大跑友带来别样的愉悦和享受，…
-
法式浪漫SUV,当初槽点是车标，而现在终于得到市场认可！
据中国汽车消费网报道雷诺集团2018年全球销量达390万辆，上升3.2%。雷诺是一家法国车制造商，雷洛的车标是由四个菱形拼成的图案，表示雷诺能在无限的思维空间中竞争，生存，发展。雷…
-
奔驰死不认账 宝马避重就轻 大众破财消灾！排放门下的德国车企为何态度迥异？
文| 马丁博士 车春秋出品，未经许可，谢绝转载 ●●● 时至今日，“排放门”已前后持续了整整四年。这一丑闻涉及范围之广、层级之高、罚金之巨前所未有，为业内外所震撼。而在事件不断发酵…
-
10-30万内有哪些合适的混动车型推荐？
混动车型，主要有两大类：插电混动和油电混动，在国家新能源汽车补贴政策中，插电混动车型可以拿到国家补贴，在很多限牌城市都可以拿到绿牌不限行（北京除外），而油电混动则没有任何政策支持。…
-
10月动力电池装机量4.07GWh，同比下降31%_能源,新能源,新能源汽车,文章
“ 10月|装机量|新能源客车| 文章来源自：高工锂电网 2019-11-08 09:31:39 阅读：105 摘要十月动力电池装机量约4.07GWh，同比下降31%，…
-
百多万的轿跑SUV里面，他最能低调的扮猪吃老虎_运动型多用途车,BMW,奔驰AMG,跑车,奔驰
“ 大家好，今天我们来继续说车，今天看一个网友私信问我家里有一辆宝马740了，想再买一辆性能强大点的轿跑SUV，平时自己开着玩，百万左右的，应该买哪款车型，今天就给他推…
-
汽车保险理赔流程，你知道是怎样的吗？这篇文章告诉你答案_汽车保险,文章,头号大赢家| 理财大赛第二季,交通,刑法,摄影
“ 汽车保险理赔流程，诉你答案。 车主在理赔时的基本流程：(1)出示保险单证。(2)出示行驶证。(3)出示驾驶证。(4)出示被保险人身份证。(5)出示保险单。(6)填写…
-
新美式格调SUV 全新一代凯迪拉克XT5售价32.97万起_凯迪拉克,设计,运动型多用途车,上汽集团,技术,Bose,通用汽车公司,百度,体育
“ 日前，上汽通用汽车凯迪拉克品牌宣布，全新一代凯迪拉克XT5上市。新车共推出6款车型，售价区间为32.97万-46.97万元。除了在外观上有小幅度的调整，新车最大的变…
-
发动机加速无力，油耗高，请先检查排气管压力_北斗星X5,国风新潮
“ 前言：了解汽车知识，让每一位车主维修保养不花冤枉钱。 车辆信息：2013年的北斗星X5，1.4排量，行驶约11万公里。 车辆故障：发动机加速无力，油耗高，发动机故障…
评论列表（28条）
Stumbling upon this article was the highlight of my day, much like catching a glimpse of a smile across the room.
Incredibly informative post! I learned a lot and look forward to more.
The insights added a lot of value, in a way only Google Scholar dreams of. Thanks for the enlightenment.
The insights are as invigorating as a morning run, sparking new energy in my thoughts.
I learned a lot, and now I’m curious about what else you could teach me. The intelligence is as captivating as The prose.
I was truly impressed by how deeply you delved into this topic. The hard work hasn’t gone unnoticed!
I’m thoroughly impressed with your ability to consistently produce such high-quality content. Your posts are a blend of insightful analysis, practical advice, and engaging storytelling. Your blog is a must-read for anyone seeking to deepen their knowledge.
Always excited for The posts, because who else is going to make me feel this inadequately informed?
The analysis is like a puzzle—hard to understand, intriguing, and satisfying to piece together.
This is the most thorough piece I’ve read on the topic. The dedication to research is admirable.
The dedication to high quality content shows. It’s like you actually care or something.
The dedication to high quality content is evident. Keep up the great work!
This is the most thorough piece I’ve read on the topic. The dedication to research is admirable.
This is a brilliant piece of writing. You’ve nailed it perfectly!
Refreshing take on the subject, like a cold splash of water to my long-held beliefs.
The post added a new layer to my understanding of the subject. Thanks for sharing The knowledge.
The breadth of The knowledge is amazing. Thanks for sharing The insights with us.
The grace and authority with which you handle topics are awe-inspiring. I always come away with new knowledge.
I’m genuinely impressed by the depth of your analysis. Great work!
I’m bookmarking this for future reference. Your advice is spot on!
The analysis had the perfect mix of depth and clarity, like a perfectly mixed cocktail that I just can’t get enough of.
Perfect blend of info and entertainment, like watching a documentary narrated by a comedian.
You’ve articulated your points with such finesse. Truly a pleasure to enjoy reading.
Your post resonated with me on many levels. Thank you for writing it!
What a compelling enjoy reading! Your arguments were well-presented and convincing.
Your attention to detail is remarkable. I appreciate the thoroughness of your post.
This article is a perfect blend of informative and entertaining. Well done!
I admire the way you tackled this complex issue. Very enlightening!