China Railways DFH shunting locomotives

From Wikipedia, the free encyclopedia
DFH2 , DFH5 , DFH6 , DFH7 , DFH21
东方红2、东方红5、东方红6、东方红7、东方红21
China Railways DFH2 0008 20111007.jpg
DFH2 0008
hideType and origin
Power typeDiesel-hydraulic
BuilderDFH2, DFH5, DFH6, DFH7 Ziyang locomotive works[1]
DFH2, DFH5, DFH21 Sifang locomotive works[1]
Build dateDFH2 1973[1]
DFH5 1976-1988[1]
DFH6 1981[1]
DFH7 1988[1]
DFH21 1977 (prototype), 1982
Total producedDFH2 ?
DFH5 >500[2]
DFH6 1[1]
DFH7 4[1]
DFH21 >29
hideSpecifications
Configuration:
​
 • UICB'B'[1]
Gauge1,435 mm (4 ft 8+1⁄2 in)
DFH21 1,000 mm (3 ft 3+3⁄8 in)
Minimum curve(?)
LengthDFH2 12.400 m (40 ft 8.2 in)[1]
DFH5 13.700 m (44 ft 11.4 in)[1]
DFH6 ?
DFH7 ?
DFH21 12.000 m (39 ft 4.4 in)[1]
TransmissionHydraulic
hidePerformance figures
Maximum speedDFH2 62 km/h (39 mph)[1]
DFH5 40 km/h (25 mph)[1]
DFH6 ?
DFH7 ?
DFH21 50 km/h (31 mph)[1]
Power outputDFH2 650 kW (870 hp)[1]
DFH5 790 kW (1,060 hp)[2][3]
DFH6 1,740 kW (2,330 hp)[1]
DFH7 790 kW (1,060 hp)[1]
DFH21 640 kW (860 hp)[1]
hideCareer
OperatorsChina Railway DFH2, DFH5, DFH6, DFH7, DFH21
Vietnam Railways D10H

The China Railways "Dongfang Hong" diesel-hydraulic locomotive classes DFH2, DFH5, DFH6 and DFH7 built from the 1970s to 1990s were all used as shunters on the Chinese railway network.

The use of diesel-hydraulic shunters has fallen out of favour on the Chinese rail network, with diesel-electric locomotives being used, however diesel-hydraulic machines continued to be produced for industrial railways - mainly the classes.[2]

The DFH21 class is a meter gauge version of the DFH2, and was used on the Yunnan–Vietnam Railway for both passenger and freight services; the same machines are used on the Vietnam Railways where they are known as the D10H.

China Railways standard gauge[]

DFH2[]

The DHF2 was originally designed by Sifang locomotive works in 1966 as a passenger locomotive of rated power 1,470 kW (1,970 hp), the design did not enter mass production, but in 1973 the design was changed at Ziyang locomotive works to a 650 kW (870 hp) power locomotive of top speed 62 km/h (39 mph).[1][img 1]

The mass was 60 t (59.1 long tons; 66.1 short tons) and starting tractive effort 192 kN (43,000 lbf). The locomotive used a 12V180ZL engine and SF2010 transmission.[4]

DFH5[]

DFH5 0001

In comparison to the DFH2 type a number of changes were made for the DFH5; a twin speed transmission allowing a higher topspeed when running without a heavy load was included, the mass was increased to improve traction.[3]

The DFH5 class was produced in large quantities, the engine was a 12V180ZJ and transmission ZJ2011, producing 278 kN (62,000 lbf) of tractive effort with a mass of 86 t (84.6 long tons; 94.8 short tons) and with a top speed of 40 km/h (25 mph). A higher speed was available with a limit of 80 km/h (50 mph) and tractive effort reduced to approximately half.[2][img 2]

Variants were produced introduced 1985, with modififactions to improve reliability and performance; the DFH5B and DFH5C, in both the rated power was increased to 920 kW (1,230 hp), and the mass by 4 t (3.9 long tons; 4.4 short tons). DFH5C was produced for operations in metalworks.[3]

DFH6[]

One example was produced for shunting in the Chinese port of Huangpu District, Shanghai.[1]

DFH7[]

Four units produced for shunting in mines and industrial environments.[1]

Metre gauge[]

DFH21[]

"Vietnam Railways D10H" and "D10H" redirect here. D10H is also the designation of some former Plymouth CR-8 locomotives.
A DF21 pulling a narrow-gauge commuter train in Kunming (2016)

Locomotives similar in design to the DFH2 type but built to meter gauge and used as universal locomotives.[1][5] The locomotives were used on the Kunming metre gauge railway, including passenger services.[6][img 3]

As of 2012, Kunming rail fans report that DFH21 locos are still used to haul a few passenger trains a day along the metre gauge tracks from Kunming North Railway Station to several nearby stations. In 2014 they still drive these trains.[7]

30 of the locomotives are also used by Vietnam Railways where they are known as the D10H,[8] in 2005 the Vietnam railways had 20 units operational.[9] In 2009 ten of the engines had Caterpillar Inc. 3512B engines fitted as replacements.[10]

Preserved locomotives[]

DFH2 0008 and DFH5 0001 are both preserved at the Beijing China Railway Museum.[11]

References[]

  1. ^ Jump up to: a b c d e f g h i j k l m n o p q r s t u v w 东方红型内燃机车 , The East is Red Diesel locomotive , www.kepu.net.cn
  2. ^ Jump up to: a b c d DFH5 东方红5 Archived 2011-01-08 at the Wayback Machine , www.railwaysofchina.com
  3. ^ Jump up to: a b c 海子铁路网社区 » 中国内燃（干线） » 东方红5型(DFH5)内燃机车 , (DF5 locomotive) , technical drawing and description , bbs.hasea.com
  4. ^ 中国铁路东方红2型(DFH2)内燃机车 , China Railway "Dongfang Hong" 2 (DFH2) Diesel locomotive , www.hudong.com
  5. ^ 中国機関車大全 液体式ディーゼル機関車編 : 東方紅２１型（ＤＦＨ２１） Archived 2012-01-18 at the Wayback Machine Chinese locomotives : diesel hydraulics , section "DFH21" , www.chinarailway.jp
  6. ^ South China March 2005 , section "Kunming meter gauge" , Peter Patt, Jan Schirling , 2005 , www.sy-country.co.uk
  7. ^ 滇越铁路徒步第一程（昆明——宜良） (A walk along the Kunming-Vietnam Railway. Part 1: Kunming-Chenggong)
  8. ^ Danh sách đầu máy D10H tại Việt nam , Info on D10H in Vietnam, daumaytoaxe.com
  9. ^ Vietnam Railways: Rolling Stock, Number of locomotives (of the year 2005), archived from the original on 13 January 2011
  10. ^ Vòng quanh các xí nghiệp đầu máy ở VN , Tour of railway factories in Vietnam , p.16 , daumaytoaxe.com
  11. ^ Preserved Locomotives Archived 2011-07-15 at the Wayback Machine , www.railwaysofchina.com

Images[]

  1. ^ 新闻资料：东方红型内燃机车 Archived 2011-07-23 at the Wayback Machine , Dongfang Hong (The east is red) types 2 and 3 museum images , news.workercn.cn
  2. ^ 新闻资料：东方红型内燃机车 Archived 2011-07-23 at the Wayback Machine , Dongfang Hong (The east is red) type 5 , museum images and technical details , news.workercn.cn
  3. ^ DFH21 Images via www.flickr.com

External links[]

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