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Russian 3TE 10U locomotive.
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<p class="MsoNormal" style="margin: 0in 0in 0pt;"><span style="font-size: small;"><span style="font-family: Times New Roman;"> <o:p></o:p></span></span></p> <p class="MsoNormal" style="margin: 0in 0in 0pt;"><span style="font-size: small;"><span style="font-family: verdana,geneva;"><span style="font-size: small;">They make a lot of black smoke, which indicates unburned fuel.<span style="mso-spacerun: yes;"> </span>I wonder if that is the way the injection is set up, or if they just have neglected air filter maintenance.<span style="mso-spacerun: yes;"> </span>In several videos, you can see the trailing unit inhaling the smoke emitted by the lead unit.<span style="mso-spacerun: yes;"> </span>I don’t know if that smoke is being pulled into the combustion air intake of the trailing unit or into the cooling air intake.<span style="mso-spacerun: yes;"> </span>If it is being pulled into the combustion air intake, that would suggest that the unburned fuel emitted by the first unit is being burned in the second unit.<span style="mso-spacerun: yes;"> </span></span></span></span></p> <p class="MsoNormal" style="margin: 0in 0in 0pt;"><span style="font-size: small;"><span style="font-family: verdana,geneva;"><span style="font-size: small;"> <o:p></o:p></span></span></span></p> <p class="MsoNormal" style="margin: 0in 0in 0pt;"><span style="font-family: verdana,geneva;"><span style="font-size: small;">But if that is the case, that unburned fuel is very effective in clogging up the air filter, which then starves the engine for air, thus resulting in the second engine being unable to burn the unburned fuel emitted by the first engine. </span></span></p> <p class="MsoNormal" style="margin: 0in 0in 0pt;"><span style="font-size: small;"><span style="font-family: verdana,geneva;"><span style="font-size: small;"> <o:p></o:p></span></span></span></p> <p class="MsoNormal" style="margin: 0in 0in 0pt;"><span style="font-family: verdana,geneva;"><span style="font-size: small;">Here is a video showing this effect of the second unit inhaling the smoke of the first unit:</span></span></p> <p class="MsoNormal" style="margin: 0in 0in 0pt;"><span style="font-size: small;"><span style="font-family: verdana,geneva;"><span style="font-size: small;"> <o:p></o:p></span></span></span></p> <p><span style="font-family: 'Times New Roman'; font-size: 12pt; mso-fareast-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: AR-SA;"><a href="http://www.youtube.com/watch?v=LH6TgfseK_4&feature=related"><span style="font-family: verdana,geneva;"><span style="font-size: small;">http://www.youtube.com/watch?v=LH6TgfseK_4&feature=related</span></span></a></span></p>
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