China Railways DF4

The first DF4 was built in 1969 in Dalian. The first 108 locomotives that were built here are the original DF4s using the 16V240ZJ engine. It took seven years to build all 108 locomotives of this type. Due to unstable technique in the production of early-built DF4 locomotives, malfunctions of mechanic and electric parts occurred frequently during the operation, especially the diesel engine. Thus, most DF4 locomotives were taken out of service for maintenance, and railroad engineers from Fengtai Locomotive Depot sarcastically joked that the DF4 "can't make it from Dongdan to Xisi", two neighborhoods of Beijing. Therefore, Dalian Locomotive Works introduced 16V240ZJA, an improved diesel engine.

Few of the early series DF4 are still in operation. The first DF4 of the class is currently in permanent exhibition at the Beijing Railway Museum.{{cite web| url=http://www.railography.co.uk/info/cn_diesels/p04.htm| title=DF4, DF4A and DF4B Class Diesel Electrics| work=Railography| author=Cotterill, Duncan| date=May 13, 2006| access-date=December 11, 2008}}

The DF4A distinguishes itself from first series DF4s with an improved engine, the 16V240ZJA. Production started in 1976 (the first model being DF4-0109) and lasted until 1984. The DF4A designation is unofficial.

Nicknamed "Watermelon", "Armed Police", or "Orange". Generally speaking, "Watermelons" and "Armed Police" versions are used for freight, while "Oranges" (DF4 2000 Series) are manufactured with alternated gear ratio for the allowance of increased operation speed, intended for passenger services. DF4B are very similar to standard DF4, apart from an improved engine (16V240ZJB) and modified engine inlet filters in certain instances. Production started in Dalian in 1984.

The DF4C was supposed to replace the DF4B as the main diesel locomotive in China and comes with several improvements, including a new engine revision (16240ZJC). The first DF4C was produced in 1985 and batch production started four years later, in 1989, and lasted until roughly the end of the 20th century. The first two DF4C (4001 and 4002) produced in 1985 continued the use of the DF4B hull. A new hull design is applied for the batch-produced configuration.

The DF4C comes in a different color scheme than the previous DF4s, namely dark blue and later light blue and beige. The passenger version, informally called DF4CK, has an A1A-A1A wheel arrangement.

The DF4, DF4B and DF4C were each produced with two different gear ratios, "passenger" (up to {{convert|120|km/h|abbr=on|disp=or}} or {{convert|170|km/h|abbr=on|disp=or}} for DF4C) and "freight" (up to {{convert|100|km/h|abbr=on|disp=or}}). The passenger variant was often painted orange.

The DF4D, the most recent DF4 revision, has been produced since 1996 with the 16V240ZJD engine. The passenger versions increased top speed to {{convert|145|km/h|abbr=on}} or {{convert|170|km/h|abbr=on}}.{{cite web| url=http://www.railography.co.uk/info/cn_diesels/p06.htm| title=DF4D Class Diesel Electrics| work=Railography| author=Cotterill, Duncan| date=October 13, 2006| access-date=December 11, 2008}} The freight version comes in a different color scheme than the previous DF4Ds, namely green (7000 Series) and later light blue (4000 Series) and yellow. The green version sat on radial bogies but later converted to standard bogies. Their top speed to 100 km/h (62 mph).

DF4D-7000 series are configured with shorter hull compared to standard DF4D series.

The DF4DJ, originally DF4DAC, of which only 2 were built had AC drive technology supplied by Siemens. They were China's first AC drive diesel locomotive.[http://www.trainfanz.com/trains_diesel_locomotive-frame-3-DF4DJ.htm 东风4DJ型(DF4DJ)] {{Webarchive|url=https://web.archive.org/web/20120303014715/http://www.trainfanz.com/trains_diesel_locomotive-frame-3-DF4DJ.htm |date=2012-03-03 }} (Dongfeng 4DJ type (DF4DJ) ), www.trainfanz.com[http://www.railwaygazette.com/news/single-view/view//ac-diesels-roll-out.html AC diesels roll out] {{Webarchive|url=https://web.archive.org/web/20191129145641/https://www.railwaygazette.com/news/single-view/view/ac-diesels-roll-out.html |date=2019-11-29 }} 1 August 2000, www.railwaygazette.com[http://www.chinacnr.com/LISTS/product/_MAINPAGE/cpxs/default3.aspx?id=197 东风4DJ型交流传动内燃机车 ] {{Webarchive|url=https://web.archive.org/web/20160119200651/http://www.chinacnr.com/LISTS/product/_MAINPAGE/cpxs/default3.aspx?id=197 |date=2016-01-19 }} Dongfeng 4DJ AC drive diesel locomotive, www.chinacnr.com[http://www.siemens.cz/extra/msv/cd/TS/Vozidla/Diesel-Electric_Loco_DF_4DAC_EN.pdf Diesel–Electric Locomotive DF 4DAC Prototype] www.siemens.cz

A road switcher version of the DF4 with side walkways and a full-body cab similar to modern American locomotives. The type was the most powerful road switcher class in China until the introduction of the HXN3B and HXN5B classes.

The DF4E is a 2 unit locomotive of total power 4.86MW (2x2.43MW)[http://www.tieliu.com.cn/cmtd2/2006/200609/2006-09-25/20060925191203_8862.html 东风4E型(DF4E)内燃机车] {{webarchive|url=https://web.archive.org/web/20080405114423/http://www.tieliu.com.cn/cmtd2/2006/200609/2006-09-25/20060925191203_8862.html |date=2008-04-05 }} (Dongfeng 4E-type (DF4E) Diesel Locomotive), www.tieliu.com

DF4s have been manufactured by several companies:

• CSR Sifang Locomotive and Rolling Stock Co., Ltd.
• CSR Ziyang Locomotive Works (DF4B, DF4C & DF4C (A1A)){{cite web|url=http://www.zyloco.com/english/CPSJ/cpsj.htm#jccp |publisher=ZiYang Locomotive Works |title=Products |year=2003 |access-date=December 11, 2008 |url-status=dead |archive-url=https://web.archive.org/web/20090206075846/http://zyloco.com/english/cpsj/cpsj.htm |archive-date=February 6, 2009 }}
• Dalian Locomotive & Rolling Stock Works
• Datong locomotive factory

In 2001, the Korean State Railway bought two locomotives of type CKD4A (DF4D) new from CNR Dalian; these were delivered in July 2002.{{cite web | url=http://www.cchere.com/topic/3893100 | title=分页 第1页 :【原创】朝鲜铁路机车车辆概况一览 - 西西河 }} These are powered by the same 16V240ZJD as the Chinese DF4D, producing {{convert|2,940|kW|hp|abbr=on}} and have a maximum speed of {{convert|100|km/h|mph|abbr=on}}.{{Cite web |url=http://en.chinacnr.com/394-970-10565.aspx |title=Type CKD4A Diesel Loco. For North Korea_Products_Rolling Stock_Diesel Locomotives_China CNR Corporation Limited |access-date=2016-01-12 |archive-date=2016-07-11 |archive-url=https://web.archive.org/web/20160711083021/http://en.chinacnr.com/394-970-10565.aspx |url-status=dead }} They are painted in the standard light blue over dark green, but their numbers are not known.

Between 2006 and 2008, three batches of refurbished second-hand DF4 ("DF4A") and DF4B were delivered to North Korea. These are numbered in the 내연200 series (내연 = Naeyŏn, "internal combustion") and are in service for passenger and freight trains all over North Korea;Kokubu, Hayato, 将軍様の鉄道 (Shōgun-sama no Tetsudō), {{ISBN|978-4-10-303731-6}} many are assigned to the Hamhŭng area. The total number delivered is not known, but the number is at least 36 units, numbered 내연201 to 내연225{{cite web |url=http://www.chinesemodeltrains.com/tripreport_2015trip2.html |title=ChineseModelTrains.com - Webtrip / Total China |website=www.chinesemodeltrains.com |url-status=dead |archive-url=https://web.archive.org/web/20160304030225/http://www.chinesemodeltrains.com/tripreport_2015trip2.html |archive-date=2016-03-04}} and 내연261 to 내연271. Many are still in their former Chinese paint, but some have been repainted into the standard light blue over dark green, and two have received the dark green/yellow scheme applied to many M62-type diesels obtained second hand from Germany and Slovakia. There is at least one DF4D, in standard blue over green livery.

During the construction of Jakarta–Bandung high speed railway line, the Chinese construction company PowerChina{{cite web |url=https://redigest.web.id/2022/02/lokomotif-df4b-jalani-uji-coba-di-depo-tegalluar/ |title=Lokomotif DF4B Jalani Uji Coba di Depo Tegalluar |website=redigest.web.id |date=2 February 2022 |access-date=19 February 2024 |language=ID}} brought and used several DF4 locomotives. The first unit, DF4B-1295, arrived at the Port of Tanjung Priok on 22 November 2021.{{cite web|url=https://redigest.web.id/2021/11/proyek-kereta-cepat-lokomotif-df4b-dari-tiongkok-tiba-di-jakarta/|title=Proyek Kereta Cepat, Lokomotif DF4B dari Tiongkok Tiba di Jakarta|website=redigest.web.id|date=23 November 2021|access-date=28 November 2021|archive-url=https://web.archive.org/web/20211123073224/https://redigest.web.id/2021/11/proyek-kereta-cepat-lokomotif-df4b-dari-tiongkok-tiba-di-jakarta/|archive-date=23 November 2021|url-status=live|language=ID}} It was transported to Tegalluar depot in Bandung on 21 January 2022.{{cite web |url=https://redigest.web.id/2022/01/lokomotif-china-railway-df4b-dikirim-ke-bandung/ |title=Lokomotif China Railway DF4B Dikirim ke Bandung |website=redigest.web.id |date=21 January 2022 |access-date=19 February 2024 |language=ID}} The second batch arrived on 28 January, consisted of DF4B-7552, 7553, 9129 and 7549.{{cite web |url=https://redigest.web.id/2022/01/lokomotif-df4b-kembali-tiba-di-jakarta-kali-ini-tidak-sendirian/ |title=Lokomotif DF4B Kembali Tiba di Jakarta, Kali Ini Tidak Sendirian |website=redigest.web.id |date=29 January 2022 |access-date=4 June 2023 |language=ID}}{{cite web |url=https://redigest.web.id/2022/07/galeri-menengok-lokomotif-df4b-sambil-fotosepur-di-tegalluar/ |title=[GALERI] Menengok Lokomotif DF4B Sambil #FotoSepur di Tegalluar |website=redigest.web.id |date=31 July 2022 |access-date=19 February 2024 |language=ID}} The third batch arrived in Tanjung Priok in December 2022, with the DF4B-6385 on 16 December and the DF4C-4151 on 31 December.{{cite web |url=https://redigest.web.id/2023/01/lokomotif-df4-kembali-tiba-di-tanjung-priok-kini-dalam-rasa-berbeda/ |title=Lokomotif DF4 Kembali Tiba di Tanjung Priok, Kini dalam Rasa Berbeda! |website=redigest.web.id |date=6 January 2023 |access-date=4 June 2023 |language=ID}}

During the construction of the line, one of the DF4 was involved in an accident. The DF4B-7553 was derailed on 18 December 2022 while hauling a track-laying machine. The derailment occurred in Padalarang District, West Bandung Regency.{{cite web |url=https://www.detik.com/jabar/berita/d-6468794/anjloknya-kereta-teknis-proyek-kcjb-hingga-memakan-korban-jiwa |title=Anjloknya Kereta Teknis Proyek KCJB hingga Memakan Korban Jiwa |website=detik.com |date=19 December 2022 |access-date=19 February 2024 |language=ID}} The derailed train was evacuated on 20 December.{{cite web |url=https://pasjabar.com/2022/12/20/kcic-evakuasi-sop-keselamatan-pekerja-pasca-kereta-teknis-yang-anjlok/ |title=KCIC Evakuasi SOP Keselamatan Pekerja Pasca Kereta Teknis yang Anjlok |website=pasjabar.com |date=20 December 2022 |access-date=19 February 2024 |language=ID}}

At the conclusion of the line construction, the PowerChina's DF4s were moved out of the country for use elsewhere. For maintenance and backup purpose, the Kereta Cepat Indonesia China (KCIC) operated a single DF4D, numbered CC207 23 01. Under the Indonesian railway nomenclature, the DF4 operated by KCIC was classified as CC207 class.{{cite web |url=https://redigest.web.id/2023/10/mengenal-lokomotif-cc207-yeti-dari-negeri-tirai-bambu/ |title=Mengenal Lokomotif CC207: Yeti Dari Negeri Tirai Bambu |website=redigest.web.id |date=22 October 2023 |access-date=19 February 2024 |language=ID}}

File:东风4型2001号内燃机车.jpg|The first DF₄ locomotive in 1969

File:DF4-0001 at CRM.jpg|DF₄ 0001 at the Beijing Railway Museum

File:DF4-0707 (Datong).jpg|DF₄ locomotive

File:DF4B 9221 in Beijing North Railway Station 20110322.jpg|DF₄B locomotive

File:China Railways DF4C 5127, Liuzhou Locomotive and Rolling Stock Plant, 20141019.jpg|DF₄C locomotive

File:DF4D 0379 20101110.jpg|DF₄D(0000 Series) locomotive

File:China Railways DF4D 3174 & China Railways DF4D 3265 20150725.jpg|DF₄D(3000 Series) locomotive

File:China Railways DF4D 4019 20150725.jpg|DF₄D(4000 Series) locomotive

File:China Railways DF4D 7007 20161217.jpg|DF₄D(7000 Series) locomotive

File:China Railways DF4DD 0289 20171124 01.jpg|DF₄DD locomotive

File:China Railways DF4DF 4035 20150709 02.jpg|DF₄DF locomotive which supports head-end power

File:China Railways DF4DJ 0001 20191003.jpg|DF₄DJ locomotive

File:Chinese Locomotive DF4E 0002 in 2001, Nanxiang Station, Shanghai (34564169946).jpg|DF₄E locomotive

File:Three China Railways DF-4 Locomotives in Padalarang Station.jpg|Two DF₄B and one DF₄C locomotives passing Padalarang Station, Indonesia

File:DF4D-0560 Train passing K16+960 Junction on Xi'an-Huyi Railway, Mar 26 2023.jpg|DF₄D-0560 on Xi'an–Huyi railway

File:China Railways DF4B 1787 20140914 02.jpg

File:China Railways DF4B 2480 20160703 04.jpg

File:China Railways DF4C 4001 20111007.jpg

• DF4-0001: is preserved at the China Railway Museum
• DF4-0002: is preserved at Fengtai Locomotive Depot, Beijing Railway Bureau
• DF4-0084: is preserved at Baoji Railway Technicion College
• DF4-0187: is preserved at Shandong Polytechnic
• DF4-0212: is preserved at Hebei Vocational College Of Rail Transportation
• DF4-2002: is preserved at Zhejiang Normal University
• DF4-2012: is preserved at Jinan Railway Advanced Technical School

• DF4B-1029: is preserved at the Shengyang Railway Museum
• DF4B-1442: is preserved at Taiyuan Locomotive Depot, Taiyuan Railway Bureau
• DF4B-1718: is preserved at Anhui Communications Vocational & Technical College
• DF4B-1781: is preserved at Heilongjiang Communications Polytechnic
• DF4B-1787: is preserved at Liuzhou Industrial Museum
• DF4B-1884: is preserved at Heilongjiang Communications Polytechnic
• DF4B-1893: is preserved at Fengtai Locomotive Depot, Beijing Railway Bureau
• DF4B-1983: is preserved at Central South University
• DF4B-2127: is preserved at Qiqihar Technician College
• DF4B-2244: is preserved at Nanjing Railway Vacational Technical College
• DF4B-2298: is preserved at Qiqihar Railway Engineering School
• DF4B-2480: is preserved at Liuzhou Railway Vacational Technical College.
• DF4B-3179: is preserved at Huhhot Vocational College
• DF4B-6210: is preserved at North University of China
• DF4B-7019: is preserved at Southwest Jiaotong University
• DF4B-7149: is preserved at Shijiazhuang Tiedao University
• DF4B-7260: is preserved at Tianjin Railway Vacational Technical College
• DF4B-9008: is preserved at the China Railway Museum

• DF4C-4001: is preserved at the China Railway Museum
• DF4C-4040: is preserved at the China Railway Museum
• DF4C-5331: is preserved at the Shenyang Railway Museum

{{Commons category|China Railways DF4 locomotives}}

• {{cite web| url=http://www.zyloco.com/english/cpsj/df4b.htm| title=Ziyang Locomotive Works| access-date=2007-10-17| archive-date=2004-01-30| archive-url=https://web.archive.org/web/20040130052804/http://www.zyloco.com/ENGLISH/cpsj/df4b.htm| url-status=dead}}
• {{cite web| url=http://www.railwaysofchina.com/df4.htm| title=Railways of China| url-status=dead| archive-url=https://web.archive.org/web/20070625033458/http://www.railwaysofchina.com/df4.htm| archive-date=2007-06-25}}
• {{cite web| url=http://www.railography.co.uk/info/cn_diesels/p00.htm| title=Railography}}

{{Reflist}}

• [http://trainspo.com/class/448/ CR DF4B @ Trainspo]

{{Locomotives of China}}

{{DPRKloco}}

{{DEFAULTSORT:China Railways Df4}}

DF4

Category:Diesel–electric locomotives of North Korea

Category:Co′Co′ locomotives

Category:Co-Co+Co-Co locomotives

Category:A1A-A1A locomotives

Category:Railway locomotives introduced in 1969

Category:Standard-gauge locomotives of China

Category:Standard-gauge locomotives of North Korea

Category:CRRC Dalian locomotives

Category:CRRC Datong locomotives

Category:CRRC Qingdao Sifang locomotives

Category:CSR Ziyang Locomotive Co., Ltd. locomotives

Category:Siemens locomotives

Category:Diesel–electric locomotives of Indonesia

Category:Standard-gauge locomotives of Indonesia