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柳工818C轮式装载机机油压力过低是什么原因?
2020-07-14 中国工程机械商贸网

作为柳工的明星产品,柳工818C轮式装载机凭借着小巧灵活、一机多用、易操纵等特点,深受机友们的喜爱。近日有朋友求助问装载机压力过低是什么原因造成的?小编现在将机油压力过低的主要原因介绍如下。

(1)机油油量不足

若机油油量不足,会使机油泵的泵油量减少,导致机油压力下降,加剧曲轴与轴承、缸套与活塞的磨损。

(2)发动机温度过高

若发动机温度过高,不但加速机油老化、变质,也容易使机油变稀,导致油压下降。

(3)机油泵停转或泵油量不足

机油泵的驱动齿轮与驱动轴的固定销断裂或配合键脱落,以及机油泵吸入异物而将泵油齿轮卡住,都会使机油泵停止运转,机油压力也随之降为0。

当机油泵泵轴与衬套之间的间隙、齿轮端面与泵盖的间隙、齿侧间隙或径向间隙因磨损而超过允许值时,都会导致泵油量减少,造成机油压力下降的后果。

(4)曲轴与连杆轴承配合间隙过大

柳工818C轮式装载机发动机长期使用后,曲轴与连杆轴承的配合间隙会逐渐增大,机油压力也随着下降。

(5)机油滤油器堵塞

当机油因滤油器堵塞而不能流通时,设在滤油器底座上的安全阀就被顶开,机油便不经过滤而直接进入主油道。如果安全阀的开启压力调得过高,滤油器被堵塞时,安全阀就不能及时打开,于是机油泵压力升高,内漏增加,主油道供油量减少,引起油压下降。

柳工818C轮式装载机

(6)回油阀损坏或失灵

若回油阀弹簧疲劳软化或调整不当,阀座与钢珠的配合面磨损或被脏物卡住而关闭不严时,回油量便明显增加,主油道的油压也会随之下降。

(7)机油散热器或管路漏油

机油散热器及管路漏油,会使油压下降。管路若被脏物堵塞,也会因阻力增大而使油的流量减少、油压下降。

(8)油压传感器失灵或油管堵塞

若油压传感器失灵,或由主油道至油压传感器的油管因污垢积聚而流通不畅时,油压表将显示机油压力下降。

(9)吸油盘堵塞

机油若过脏、过黏,就容易堵塞吸油盘。当发动机小油门低速运转时,机油泵吸油量不大,主油道尚能建立起一定的压力,油压会正常;但当加大油门高速运转时,机油泵的吸油量会因吸盘阻力过大而明显减少,进而造成机油压力表的显示值下降。

(10)机油牌号不对或质量不合格

不同型号的发动机须添加不同的机油,同种机型在不同的季节也应采用不同牌号的机油。如果机油牌号不对,发动机运转时会因机油黏度太低而加大泄漏量,从而使油压降低。

(11)调压阀设定压力偏低

如果调压阀设定油压低,机油就不能有效地输送到各润滑部位,从而发生机械故障。如果油压过高,就会增加油耗,给机油泵和润滑部位增加负荷,损坏油路密封件并引发机油泄漏。

日常有效的预防可以减少机器出故障的几率。以上即是小编整理的可能造成柳工818C轮式装载机机油压力过低的原因,希望对有需要的朋友带来帮助。

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HTTP Status 500 – Internal Server Error

HTTP Status 500 – Internal Server Error


Type Exception Report

Message Unable to compile class for JSP:

Description The server encountered an unexpected condition that prevented it from fulfilling the request.

Exception

org.apache.jasper.JasperException: Unable to compile class for JSP: 

An error occurred at line: [22] in the jsp file: [/information_list_2020/include/comment.jsp]
PoolManager cannot be resolved to a type
19: 	String detailId=CommonString.getFormatPara(request.getParameter("detailId"));
20: 	String sql="";
21: 	Map memberInfo = (HashMap)session.getAttribute("memberInfo");
22: 	PoolManager pool = (PoolManager)application.getAttribute("poolAPP");
23: 	if(pool==null){
24: 		pool = new PoolManager();
25: 	}


An error occurred at line: [22] in the jsp file: [/information_list_2020/include/comment.jsp]
PoolManager cannot be resolved to a type
19: 	String detailId=CommonString.getFormatPara(request.getParameter("detailId"));
20: 	String sql="";
21: 	Map memberInfo = (HashMap)session.getAttribute("memberInfo");
22: 	PoolManager pool = (PoolManager)application.getAttribute("poolAPP");
23: 	if(pool==null){
24: 		pool = new PoolManager();
25: 	}


An error occurred at line: [24] in the jsp file: [/information_list_2020/include/comment.jsp]
PoolManager cannot be resolved to a type
21: 	Map memberInfo = (HashMap)session.getAttribute("memberInfo");
22: 	PoolManager pool = (PoolManager)application.getAttribute("poolAPP");
23: 	if(pool==null){
24: 		pool = new PoolManager();
25: 	}
26: 	String memberId="0"; 
27: 	if(memberInfo!=null){


Stacktrace:
	org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:103)
	org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:392)
	org.apache.jasper.compiler.JDTCompiler.generateClass(JDTCompiler.java:594)
	org.apache.jasper.compiler.Compiler.compile(Compiler.java:400)
	org.apache.jasper.compiler.Compiler.compile(Compiler.java:370)
	org.apache.jasper.compiler.Compiler.compile(Compiler.java:354)
	org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:660)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:400)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:395)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:339)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
	org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:738)
	com.jerehnet.filter.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:36)

Note The full stack trace of the root cause is available in the server logs.


Apache Tomcat/7.0.104

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HTTP Status 500 – Internal Server Error

HTTP Status 500 – Internal Server Error


Type Exception Report

Message Unable to compile class for JSP:

Description The server encountered an unexpected condition that prevented it from fulfilling the request.

Exception

org.apache.jasper.JasperException: Unable to compile class for JSP: 

An error occurred at line: [13] in the jsp file: [/information_list_2020/include/detail/hot_news.jsp]
PoolManager cannot be resolved to a type
10: <%@page import="java.text.SimpleDateFormat"%>
11: <%
12: 
13: 	PoolManager pool = (PoolManager)application.getAttribute("poolAPP");
14: 	if(pool==null){
15: 		pool = new PoolManager();
16: 	}


An error occurred at line: [13] in the jsp file: [/information_list_2020/include/detail/hot_news.jsp]
PoolManager cannot be resolved to a type
10: <%@page import="java.text.SimpleDateFormat"%>
11: <%
12: 
13: 	PoolManager pool = (PoolManager)application.getAttribute("poolAPP");
14: 	if(pool==null){
15: 		pool = new PoolManager();
16: 	}


An error occurred at line: [15] in the jsp file: [/information_list_2020/include/detail/hot_news.jsp]
PoolManager cannot be resolved to a type
12: 
13: 	PoolManager pool = (PoolManager)application.getAttribute("poolAPP");
14: 	if(pool==null){
15: 		pool = new PoolManager();
16: 	}
17: 	Connection connection = null;
18: 	DBHelper dbHelper = DBHelper.getInstance() ;


Stacktrace:
	org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:103)
	org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:392)
	org.apache.jasper.compiler.JDTCompiler.generateClass(JDTCompiler.java:594)
	org.apache.jasper.compiler.Compiler.compile(Compiler.java:400)
	org.apache.jasper.compiler.Compiler.compile(Compiler.java:370)
	org.apache.jasper.compiler.Compiler.compile(Compiler.java:354)
	org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:660)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:400)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:395)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:339)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
	org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:738)
	com.jerehnet.filter.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:36)

Note The full stack trace of the root cause is available in the server logs.


Apache Tomcat/7.0.104

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