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Locomotive Fuel Usge Help Needed
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<p><span style="font-family: verdana,geneva;"><span style="font-size: small;">Yes, I was looking at it as a form of cruise control, but to maintain engine RPM, not track speed. But I can see what you are saying and I am re-thinking this. Let me ask this: Say you have a locomotive running on level track, say in notch 2, and traveling at a balance speed of say 30 mph or whatever that speed would be. </span></span></p> <p><span style="font-family: verdana,geneva;"><span style="font-size: small;">Is that locomotive producing all the horsepower that it can possibly produce in notch 2?</span></span></p> <p><span style="font-family: verdana,geneva;"><span style="font-size: small;">Now say you add cars to the locomotive running in notch 2, and the load pulls the speed down to say 5 mph. At the same time, the voltage to the traction motors falls and the amperage rises. The RPM of the engine will remain constant. Does the fuel consumption remain exactly the same? I guess it would because the empty engine running at balance speed would be the same amount of work as the engine moving the cars and extra tonnage at a slower speed.</span></span></p> <p><span style="font-family: verdana,geneva;"><span style="font-size: small;">So then is it correct to say that the only thing the load regulator does is trade amperage for voltage and vice versa?</span></span></p> <p><span style="font-family: verdana,geneva;"><span style="font-size: small;">What does the governor do? My understanding was that the governor adjusts the fuel to maintain constant engine RPM under a varying load.</span></span></p> <p><span style="font-family: verdana,geneva;"><span style="font-size: small;">But you are saying that there is no varying load within any given throttle notch. Why have a governor then?</span></span></p>
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