China Railways DFH mainline locomotives

Specifications
Specifications
Configuration:;
• UIC	DFH1,DFH3 B’B’; DFH4 6 axle
Gauge	1,435 mm (4 ft 8+1⁄2 in)
Wheel diameter	DF1, DF3 1,050 mm (41.34 in); DF4 ?
Minimum curve	DF1, DF3 145 m (476 ft); DF4 ?
Length	DFH1 16.550 m (54 ft 3.6 in); DFH3 17.970 m (58 ft 11.5 in)
Width	DFH1 3.106 m (10 ft 2.28 in); DFH3 3.279 m (10 ft 9.09 in)
Height	DFH1 4.516 m (14 ft 9.80 in); DFH3 4.450 m (14 ft 7.20 in)
Loco weight	DFH1 84 t (83 long tons; 93 short tons); DFH3 92t
Prime mover	DFH1 2 of 12V175Z, 12V180Z or 12V175ZL; DFH3 12V180JZ; DFH4 2 of 12V200ZL later 12V200ZJ
Transmission	DFH1 hydraulic 12175Z (2 of)

Type and origin
Type and origin
Power type	Diesel-hydraulic
Builder	DFH1: Sifang; DFH3: Sifang; DFH4 Sifang, Ziyang, Qishuyan; China
Build date	DFH1 1959‡; 1964-1972 (series); DFH3 1976-87; DFH4 1969-81
Total produced	DFH1 109; DFH3 268; DFH4 6

DFH1, DFH3, DFH4
东方红1、东方红3、东方红4
DFH1, DFH3, DFH4; 东方红1、东方红3、东方红4
	DFH3-0009 at Beijing Railway Museum (2010)
Power type
Type and origin
Power type	Diesel-hydraulic
Builder	DFH1: Sifang; DFH3: Sifang; DFH4 Sifang, Ziyang, Qishuyan; China
Build date	DFH1 1959‡; 1964-1972 (series); DFH3 1976-87; DFH4 1969-81
Total produced	DFH1 109; DFH3 268; DFH4 6
Configuration:;
Specifications
Configuration:;
• UIC	DFH1,DFH3 B’B’; DFH4 6 axle
Gauge	1,435 mm (4 ft 8+1⁄2 in)
Wheel diameter	DF1, DF3 1,050 mm (41.34 in); DF4 ?
Minimum curve	DF1, DF3 145 m (476 ft); DF4 ?
Length	DFH1 16.550 m (54 ft 3.6 in); DFH3 17.970 m (58 ft 11.5 in)
Width	DFH1 3.106 m (10 ft 2.28 in); DFH3 3.279 m (10 ft 9.09 in)
Height	DFH1 4.516 m (14 ft 9.80 in); DFH3 4.450 m (14 ft 7.20 in)
Loco weight	DFH1 84 t (83 long tons; 93 short tons); DFH3 92t
Prime mover	DFH1 2 of 12V175Z, 12V180Z or 12V175ZL; DFH3 12V180JZ; DFH4 2 of 12V200ZL later 12V200ZJ
Transmission	DFH1 hydraulic 12175Z (2 of)
Maximum speed
Performance figures
Maximum speed	DFH1 140 km/h (87 mph)*, 120 km/h (75 mph)†; DFH3 120 km/h (75 mph)
Power output	DFH1 1,060 kW (1,420 hp), 1,220 kW (1,640 hp)†; DFH3 2730 kW (980 hp), 2*820 kW (1,100 hp)¤; DFH4 3,308 kW (4,436 hp)¶
Tractive effort	DFH1250 kN (56,000 lbf) / 270 kN (61,000 lbf) (maximum); DFH3 271 kN (61,000 lbf) (maximum)
Operators
Career
Operators	China Railway; Korean State Railway
	First 73 units; † Final 36 units; ‡ NY1 prototype; ¤ Two units produced in 1986 of higher power; ¶ First units produced were of higher power;

The China Railways DFH1 (Chinese: 东方红1) was a type of 4-axle B'B' single-cab diesel-hydraulic locomotive used on mainline passenger services; the DFH3 (Chinese: 东方红3) was a later development of a similar design but with two driving cabs.

The China Railways DFH4 (Chinese: 东方红4) was a 6-axle high-powered freight and passenger locomotive, it did not reach mass production.

China Railways DFH1

The first prototype unit (NY1) (neiran yeli chuandong meaning diesel-hydraulic transmission)^[4] was produced in 1959 at Sifang locomotive works, and given the name 'Weixing'. Locomotive design was similar to German diesel-hydraulic machines such as the DB Class V 200 - the machine had a pair of high-speed diesel engines, each driving a separate hydraulic torque converter based transmission resulting in low mass compared to contemporary diesel-electric machines.

Series production began in 1964. The locomotive was used for passenger trains.^[1] The locomotives could be worked in multiple, and were often used in this way, with a cab at each end. They operated on the Beijing Shenyang passenger trains.^[5]

China Railways DFH3

The DFH3 shares the same twin engine and twin hydraulic transmission as the DFH1 but is a two-cab design.

A DFH3 in standard Kukch'ŏl livery at Namyang Station on the Hambuk Line.

The production of the DFH3 follows on from the DFH1. The class were used on passenger trains in northeast China, by 2010 most had been displaced, and some are believed to being used in industrial service.^[6]

North Korea

Between 2000 and 2002, thirty second-hand DFH3 were imported by the Korean State Railway for operation in North Korea,^[7] numbered 내연901 to 내연930, although 내연903 is a Beijing class locomotive.^[8] Many are still in their original Chinese livery of blue and white, but some have been repainted into several different liveries, including the standard North Korean light blue over dark green, along with non-standard schemes of white over green, green with a yellow stripe, and green with a white stripe.

China Railways DFH4

The Qishuyan Ziyang Diesel locomotive works manufactured six locomotives of type DFH4 between 1969 and 1981. The first unit was produced in 1969 with an overall 5,000 hp (3,700 kW) machine with twin engine and hydraulic transmission.^[1] Two 4,500 hp (3,400 kW) machines were produced in 1971 and 1974. Between 1975 and 1981 the Ziyang plant investigated the manufacture of further locomotives using the 12V200ZJ engine.^[2]

Preserved locomotives

One unit, locomotive number DFH1 4290 is an exhibit at the Beijing China Railway Museum, all other units have been destroyed^[9] except DFH1 4222 which is believed to be at the locomotive museum in Shenyang.^[10] The Beijing museum also stores DFH3 0009.^[10]

References

^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k ^l ^m ⁿ 东方红型内燃机车, DFH Diesel locomotives, "kepu.net.cn"
^ ^a ^b ^c ^d ^e 东方红4型(DFH4)内燃机车, Donfang Hong (DFH4) Diesel locomotive, www.fjsen.com
^ 新闻资料：东方红型内燃机车 Archived 2011-07-23 at the Wayback Machine, DFH locomotive, news.workercn.cn
^ ND and NY prefixes Archived 2009-10-03 at the Wayback Machine, www.railwaysofchina.com
^ DFH1 Class B'-B' Diesel-Hydraulics, www.railography.co.uk
^ DFH3 Class B'-B' Diesel-Hydraulics, www.railography.co.uk
^ 朝鲜铁路机车车辆概况一览
^ Kokubu, Hayato, 将軍様の鉄道 (Shōgun-sama no Tetsudō), ISBN 978-4-10-303731-6
^ 东方红1型机车安家铁博 Archived 2013-04-07 at archive.today (information on the preservation of DFH1 4290), www.tieliu.com.cn
^ ^a ^b Preserved Locomotives Archived 2011-07-15 at the Wayback Machine, www.railwaysofchina.com

[mu-1] ^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k ^l ^m ⁿ 东方红型内燃机车, DFH Diesel locomotives, "kepu.net.cn"

[dong-2] 东方红4型(DFH4)内燃机车, Donfang Hong (DFH4) Diesel locomotive, www.fjsen.com

[3] 新闻资料：东方红型内燃机车 Archived 2011-07-23 at the Wayback Machine, DFH locomotive, news.workercn.cn

[4] ND and NY prefixes Archived 2009-10-03 at the Wayback Machine, www.railwaysofchina.com

[5] DFH1 Class B'-B' Diesel-Hydraulics, www.railography.co.uk

[6] DFH3 Class B'-B' Diesel-Hydraulics, www.railography.co.uk

[7] 朝鲜铁路机车车辆概况一览

[8] Kokubu, Hayato, 将軍様の鉄道 (Shōgun-sama no Tetsudō), ISBN 978-4-10-303731-6

[9] 东方红1型机车安家铁博 Archived 2013-04-07 at archive.today (information on the preservation of DFH1 4290), www.tieliu.com.cn

[mus-10] Preserved Locomotives Archived 2011-07-15 at the Wayback Machine, www.railwaysofchina.com

[1]

[2]

[3]

[4]

[5]

[6]

[7]

[8]

[9]

[10]