| 词条 | EMC AB6 |
| 释义 |
| name = EMC AB6 | powertype = Diesel-electric | image = CRI&P 751 (AB6) at Joliet, IL on October 16, 1966.jpg | caption = Rock Island {{Abbr|No.|Number}} 751 at Joliet, Illinois in October 1966 | gauge = {{track gauge|ussg|allk=on}} | builder = Electro-Motive Corporation (EMC) | builddate = 1940 | totalproduction = 2 | aarwheels = {{ubl|New: A1A-3|Later: A1A-A1A}} | enginetype = V12 Two-stroke diesel | primemover = EMD 567, 1 off, later 2 off | cylindercount = 12 | poweroutput = {{ubl|New: {{convert|1000|hp|kW|abbr=on}}|Later: {{convert|2000|hp|kW|0|abbr=on}}}} | operator = Rock Island | fleetnumbers = 750 and 751 | deliverydate = June 1940 | retiredate = mid-1970s | disposition = Both scrapped 1973–74 }} The EMC AB6 was a type of diesel locomotive built exclusively for the Chicago, Rock Island and Pacific Railroad (the "Rock Island Line") by General Motors' Electro-Motive Corporation and delivered in June 1940. Two examples were built, numbered #750 and #751. They were built for the Rocky Mountain Rocket passenger train, which travelled as a unified train from Chicago, Illinois, to Limon, Colorado, which then divided. One section went to Colorado Springs, Colorado, and the other to Denver, Colorado. The Rock Island desired a locomotive that could look like an integrated part of the train during the Chicago-Limon portion of the route, and could then be operated independently to take three cars to Colorado Springs. A regular, cab-equipped A-unit could have been purchased, but that would have ruined the streamlined look of the train, so the RI had EMC build a flat-fronted locomotive based on an E-series E6B (B unit) but with an operating cab, headlight, pilot, and other features to enable it to operate as an independent locomotive. Since the small three- and four-car trains the units would have to haul independently were very light, the AB6 pair were built with only one 1,000 hp EMC 567 V12 engine, and a baggage compartment where the second engine would have been. Later, with increasing trainloads, the baggage compartment was replaced with a second engine. In 1965, the units had their steam generators replaced with head-end power and were reassigned to push-pull suburban service in the Chicago area. In this form, they lasted until the mid-1970s. References
9 : A1A-3 locomotives|A1A-A1A locomotives|Electro-Motive Division locomotives|Chicago, Rock Island and Pacific Railroad|Passenger locomotives|Diesel-electric locomotives of the United States|Railway locomotives introduced in 1940|Scrapped locomotives|Standard gauge locomotives of the United States |
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