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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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air compressor on new amtrak locomotives
I was at the local ice cream place that is adjacent to one of the local
train tracks. The Amtrak pulled up to exchange passengers at the nearby station. A bit after it stopped, I heard a very familiar and unexpected sound. It was a large air compressor driven by a 60 Hz 3-phase motor. I'd guess from the sound it very well could be a Quincy, and I'd guess maybe 15-25 Hp 4-cyl 2-stage, with pneumatic unloaders. Anyway, it struck me as just a tiny bit odd they'd use an electric compressor, as they have mechanical power available off the Diesel engine. I also noticed the Diesel didn't seem to change speed when the train accelerated, so I'm guessing they run a single engine at 60-Hz synchronous speed all the time, so they can distribute 60-Hz power for air conditioning, etc. to the coaches. So, no aux engine for the non-traction power. Anybody know anything about this? Jon |
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