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</h3> <h6>来源Qwww.www.lgsvo.icu    发布旉Q?019-02-21</h6> <div class="detail" id="zoom" style="width:558px; overflow:hidden; margin-bottom:5px;"><p><p class="MsoNormal" style="text-indent:2em;"> <span style="font-size:16px;">比例阀在出厂前已经q严格的质量验,包括静态特性测?/span><span style="font-size:16px;">(</span><span style="font-size:16px;">输入甉|一压力Ҏ试验、内泄漏试验、负载特性试?/span><span style="font-size:16px;">)</span><span style="font-size:16px;">和动态特性测?/span><span style="font-size:16px;">(</span><span style="font-size:16px;">频率响应试验、瞬间响应试?/span><span style="font-size:16px;">)</span><span style="font-size:16px;">?b>比例阀l修</b>前需要先Ҏ例阀q行,的Ҏ包括比例阀늣U圈电阻定、输入电测试及输出二次油压的测试? </span> </p> <p class="MsoNormal" style="text-indent:2em;"> <span style="font-size:16px;">(1)</span><span style="font-size:16px;">늣U圈电阻的测定。关闭点火开养I脱开L܇比例阀与܇控制器输出接</span><span style="font-size:16px;">1</span><span style="font-size:16px;">Q?/span><span style="font-size:16px;">3</span><span style="font-size:16px;">之间的插_定两线之间的电d和地线与机体之间的电|从而判断比例阀늣U圈有无短\、断路或搭铁? </span> </p> <p class="MsoNormal" style="text-indent:2em;"> <span style="font-size:16px;">(2)</span><span style="font-size:16px;">比例阀输入甉|的测定。断开比例阀的一根导U,串h万用表,按不同机型各自的试条g定输h甉|Q如?/span><span style="font-size:16px;">7-4</span><span style="font-size:16px;">所C。用直流钛_Ş表进行测试时相当便,无需拔开插头Q也不需断开导线。而在不同的动力模式或不同的发动机转速下Q根据܇控制器输比例阀直流甉|信号的正与否,p判断出比例阀之前的电子控刉分是否有故障? </span> </p> <p class="MsoNormal" style="text-indent:2em;"> <span style="font-size:16px;">(3)</span><span style="font-size:16px;">比例阀输出压力的测试。在比例阀l修中,二次油压的测点上接好量程?/span><span style="font-size:16px;">6MPa</span><span style="font-size:16px;">的压力表Q对不同机型按各自测试条件检查比例阀输出的压力,如果压力不正,可进行调节。对于不可调的比例阀Q在认输入的先导a压与比例阀的电正怹后,应拆阀心进行清z或更换该比例阀? </span> </p></p></div> <p><div class="hogh">上一?<a href="153.html">伺服阀l修的维修方法和注意事项 </a></div> <div class="hogh">下一?<a href="151.html">伺服阀l修从哪些方面着?/a></div> </p> <div class="tag">相关标签Q?a href='/key.aspx?k=%b1%c8%c0%fd%b7%a7%ce%ac%d0%de'>比例阀l修</a>,</div> </div> <div class="title2"><h3>相关新闻</h3></div> <div class="news_list"> <table width="100%" border="0" cellspacing="0" cellpadding="0"> <li class="hogh"><a href="/news/152.html">常见的比例阀l修中检的Ҏ有哪些? 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