| 词条 | British Rail Classes 112 and 113 | ||||||||||||||||||||||||||||||
| 释义 |
| background = #0033cc;color:white | name = British Rail Classes 112 and 113 | image = File:Last train at Arkwright Street 2022606.jpg | imagealt = | imagesize = 240px | caption = Last train from Nottingham Arkwright Street, 1969 | interiorimage = | interiorimagealt = | interiorcaption = | service = 1960–1969 | manufacturer = Cravens | factory = | family = First generation | replaced = Steam locomotives and carriages | yearconstruction = 1959–1960 | yearservice = | refurbishment = | yearscrapped = 1968–1969 | numberconstruction= | numberbuilt = Class 112: 25 sets (50 cars) Class 113: 25 sets (50 cars) | numberservice = | numberpreserved = | numberscrapped = All | formation = Power-twin: {{abbr|DMBS|Driving Motor Brake Second}}-{{abbr|DMCL|Drving Motor Composite with lavatory}} | fleetnumbers = | capacity = DMBS: 52 second DMCL: 12 first, 51 second | operator = British Rail | depots = | lines = London Midland Region | carbody = Steel | trainlength = | carlength = {{convert|57|ft|6|in|m|2|abbr=on}} | width = {{convert|9|ft|3|in|m|2|abbr=on}} | height = | floorheight = | platformheight = | entrylevelorstep = | art-sections = | doors = Slam | maxspeed = {{convert|70|mph|km/h|abbr=on}} | weight = DMBS: {{long ton|30|0}}, DMCL: {{long ton|30|0}} | acceleration = | deceleration = | traction = | engine = One Rolls-Royce C8NFLH | poweroutput = {{convert|238|hp|abbr=on}} per car | transmission = Class 112: Mechanical 4-speed epicyclic gearbox Class 113: Hydraulic | aux = | powersupply = | hvac = | uicclass = (1A)(A1)+(1A)(A1) | bogies = | brakes = Vacuum | safety = | coupling = Screw-link | multipleworking = ■ Blue Square | gauge = {{RailGauge|ussg}} }} The Class 112 and Class 113 DMUs used the standard Cravens body used on Class 105s but had a single Rolls-Royce C8NFLH engine rated at {{convert|238|hp|abbr=on}} per car, all of which formed into 'power twins'- two car sets with both vehicles powered. There were two batches built, the first 50 vehicles (25 sets) had standard mechanical transmission via a gearbox and were allocated the Class 112. The second batch of 50 cars (25 sets) had hydraulic transmission, and became Class 113s. The cars were built for services in the LMR Central Division and in the Liverpool - St Helens area, where the gradients in the Lancashire & Yorkshire area required more power. Both types also spent some time working from Cricklewood. The gross weight of a set with all seats occupied was approximately 70 tons, giving {{convert|6.8|hp|abbr=on}} per ton. Empty, it was 8.1 hp/ton, which compared favourably with 5.7 hp/ton that the Cravens power/trailer had. Orders
Other technical details
WithdrawlAll 112s and 113s were withdrawn between 1968 and 1969 and none survive. References{{Commons category|British Rail Class 112}}{{Commons category|British Rail Class 113}}
2 : British Rail diesel multiple units|Cravens multiple units |
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