ATA73章-发动机燃油与操纵系统-FMU、EEC、P2/T2更换指南
<P>**** Hidden Message *****</P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">ATA73</FONT></SPAN></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 18pt; TEXT-INDENT: -18pt; mso-list: l0 level1 lfo1; tab-stops: list 18.0pt"><FONT face="Times New Roman"><SPAN lang=EN-US style="mso-fareast-font-family: 'Times New Roman'"><SPAN style="mso-list: Ignore">1.<SPAN style="FONT: 7pt 'Times New Roman'"> </SPAN></SPAN></SPAN><SPAN lang=EN-US>FMU</SPAN></FONT><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">的更换：</SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">1.1</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">更换此件可能原因是渗漏，更多的时候是因为超速保护警告出现后，</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">EEC</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">里面有</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">FMU</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">的故障代码，最近已更换过两次；</SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">1.2</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">按理说故障排到落实到某一个件后已经不难了，剩下的就是细心和耐心地去安装和测试。但是问题往往出现在安装程序上，</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">FMU</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">作为一个燃油部件，管路很多是肯定的，这就要求我们按</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">IPC</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">一个个地去更换封圈，装封圈时先用油润滑并不能扭曲地装，以防封圈内部产生应力到时候在高压油的作用下破裂，造成漏油。另外，管子多就意味着固定卡子多，发动机上空间狭小部件众多，为了防震和固定，管接头处必然会连接很多卡子和卡片，</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">FMU</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">的燃油管接头都是三颗螺栓固定，有些管接头的螺栓同时要起到固定管接头和固定卡片的双重作用，问题就出现了！某次更换</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">FMU</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">时就将卡片装入了两根管子的结合面，然后再用螺栓上紧，由于卡片装入，增加了封严面的间隙，影响了封圈的密封功能，在高压燃油的作用下，由最开始的试车检查无明显渗漏，到最后的狂漏油，好像是漏了上吨级别的油！由此可见，一个低级的安装失误，会造成多么重大的后果！</SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">1.3</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">事后吸取经验教训：我们更换拆装一个件的时候，要基本了解各部分的简单原理和功能作用，而不是简单地麻木地装上了事，还有就是在时间紧的时候更要注意，要反复交叉检查，确保正确。</SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">2</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">．</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">EEC</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">的更换：</SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">2.1EEC</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">是发动机</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">FADEC</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">系统的核心部件，所有传感器的数据信息都是在</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">EEC</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">内进行处理并发出指令。</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">EEC</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">分为两个通道。</SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">2.2</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">更换前要打印出</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">EEC</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">的工作时间和工作循环，以及</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">TSD</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，大家要养成一个习惯，对类计算机部件，更换前都要打印</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">TSD</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">；</SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">2.3EEC</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">拆装相对比较简单，由</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">4</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">根螺栓固定于大发机匣上，主要是左右两边有很多大的数据电插头，拆装此类电插头要注意方法，不能蛮干，以免损坏插针，特别是装上是，要先将电插头的后部</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">BACKSHELL</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">对准电插头安装座，几根校准槽对准后，先用手带，后用鹰嘴钳去紧电插头的螺纹，这样可以确保无损害安装正确。</SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">3</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">．</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">P2/T2</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">的更换：</SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">3.1P2/T2</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">提供进入大发进气道的空气的温度和压力，尾喷的</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">P4.9</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">与</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">P2</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">的比值就是发动机的重要性能参数</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">EPR</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，所以如果</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">P2/T2</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">探头故障，就会导致</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">EPR</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">模式实效，发动机进入备用的</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">N1</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">模式，很多功能受到抑制。</SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">3.1</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">拆装过程并不复杂，主要是涂胶，因为</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">P2/T2</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">处承受着巨大的气流，所以涂胶的质量要必须过关，类似于涂风挡的胶，先用胶带将周围贴住，然后将胶均匀涂在相应位置，压平，如果干燥时间不够，要用电吹风吹干，之后一天，每个飞行航段注意检查。</SPAN></P>
回复 1# 航空 的帖子
辛苦辛苦，学习学习 ATA73章-发动机燃油与操纵系统-FMU、EEC、P2/T2更换指南 多谢了 学习一下thanks a lot
这个不错哦，收下了 ATA73章-发动机燃油与操纵系统-FMU、EEC、P2/T2更换指南
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