| 词条 | British Rail Class 16 |
| 释义 |
|name = NBL Type 1 British Rail Class 16 |powertype = Diesel-electric |image = North British Type 1 D8403 (8314604715).jpg |caption = No. D8403 in green livery with all-yellow front end at Stratford MPD in 1966 |fleetnumbers = D8400–D8409 |builder = North British Locomotive Company |builddate = 1958 |serialnumber = 27671–27680 |totalproduction = 10 |gauge = {{RailGauge|ussg|al=on}} |primemover = Paxman 16YHXL |transmission = Diesel electric |Britishclass= Bo-Bo |uicclass = Bo'Bo' |wheeldiameter = {{convert|3|ft|7|in|m|3|abbr=on}} |minimumcurve = {{convert|3.5|chain|m|2|lk=in}} |trainbrakes = Vacuum |locobrakeforce = {{convert|31|LTf|kN|abbr=on|lk=in}} |wheelbase = {{convert|28|ft|6|in|m|abbr=on}} |length = {{convert|42|ft|6|in|m|abbr=on}} |width = {{convert|8|ft|8+1/2|in|m|3|abbr=on}} |height = {{convert|12|ft|8|in|m|3|abbr=on}} |locoweight= {{convert|68|LT|t ST}} |maxspeed = {{convert|60|mph|abbr=on}} |poweroutput = Engine: {{convert|800|hp|0|abbr=on|lk=in}} At rail: {{convert|627|hp|0|abbr=on}} |tractiveeffort = Maximum: {{convert|42000|lbf|kN|1|abbr=on|lk=in}} |fuelcap = {{convert|400|impgal|L USgal|abbr=on}} |trainheating = None; through steam pipe |multipleworking = ● Red Circle |axleloadclass = Route availability 4 |operator = British Railways |retiredate = 1968 |disposition = All scrapped | displacement = {{convert|78.4|L|cuin|abbr=on}} | alternator = | generator = GEC WT 881 (plus GEC auxiliary generator | tractionmotors = 4 x GEC WT 441, nose suspended, with single reduction gear drive | cylindercount = 16 | cylindersize = {{convert|7|in|mm|0|abbr=on}} bore {{convert|7+3/4|in|mm|0|abbr=on}} stroke }} The North British Type 1 (later known as Class 16) was a type of diesel locomotive ordered under British Railways' 1955 Modernisation Plan. Like other Type 1 designs, they were relatively small locomotives intended primarily for local freight traffic. They were numbered D8400-D8409.[1] OverviewThe design evolved from an earlier prototype locomotive built by North British, No. 10800. Under British Railways' 'pilot scheme', ten locomotives were ordered for evaluation against rival designs from British Thomson-Houston (Class 15) and English Electric (Class 20). The design shared some similarities with Class 15, both being of the road-switcher layout which was uncommon in the U.K., and both being powered by an {{convert|800|hp|abbr=on}} Paxman 16YHXL prime mover. DeliveryThe ten locomotives (numbered D8400–D8409) were completed at the North British Locomotive Company's Queen's Park Works in Glasgow, between May and September 1958. They were delivered to Devons Road depot, Bow, North-east London on the London Midland Region of British Railways for evaluation against the rival designs, but soon moved to nearby Stratford depot on the Eastern Region, where they stayed for the rest of their lives. OperationThe design was not a success, and no further examples were built. While the Class 15s also suffered problems with the Paxman engines, these were worse on Class 16 because inadequate ventilation resulted in frequent engine seizures. Another problem was coolant contamination of the oil, due to cylinder head failure{{Clarify|date=March 2009}}. They were fitted with a non-standard type of electro-magnetic control equipment (coded "red circle" by BR) which was prone to failure, and they could not operate in multiple with locomotives fitted with the more common electro-pneumatic ("blue star") controls. WithdrawalBeing non-standard and unreliable, the locomotives were an obvious candidate for early withdrawal. They were withdrawn between February and September 1968, and all ten had been cut up for scrap by the end of 1969. Sources1. ^http://www.brdatabase.info/locoqry.php?action=class&type=D&id=16
Further reading
7 : British Rail diesel locomotives|Bo-Bo locomotives|NBL locomotives|Railway locomotives introduced in 1958|Scrapped locomotives|Standard gauge locomotives of Great Britain|Diesel-electric locomotives of Great Britain |
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