State owned | |
Industry | Railway |
---|---|
Founded | 1961 |
Founder | Indian Railways |
Headquarters | Varanasi, Uttar Pradesh , |
Key people | Rashmi Goel (GM), IRAS[1] |
Products | Locomotives |
Website | www.dlw.indianrailways.gov.in |
The Diesel Locomotive Works (DLW) in Varanasi, India, is a production unit owned by Indian Railways, that manufactures diesel-electric locomotives and its spare parts. It is the largest diesel-electric locomotive manufacturer in India. It is located on DLW to BHU road of the metropolitan city of Varanasi.
Company[edit]
Founded in 1961, the DLW rolled out its first locomotive three years later, on 3 January 1964. It manufactures locomotives which are variants based on the original ALCO designs dating to 1960s and the GM EMD designs of the 1990s.[2] DLW has an annual production capacity of 250 locomotives[3] and plans to increase it to 275 based on the current demand.[4][5]Since inception,DLW has produced total 8099 locomotives (up to 31 January 2018) of various types. DLW now manufactures'More than one locomotive a day'. DLW manufactured 334 diesel-electric locomotives in last financial year 2016-17, which is the highest ever loco production by any loco manufacturing unit in India and bagged the 'Best Production Unit Shield' for the second successive year.[6]
Products[edit]
DLW locomotives have power outputs ranging from 2,600 horsepower (1,900 kW) to 5,500 horsepower (4,100 kW). Currently DLW is producing EMD GT46MAC and EMD GT46PAC locomotives under license from Electro-Motive Diesels (formerly GM-EMD) for Indian Railways. Some of its EMD locomotive products are WDP4, WDP4D, WDG4D, WDG5 and others as of June 2015. DLW recently started producing HEP capable WAP-7 high horsepower Electric Locomotives. Recently, it has been allotted to Santragachi & Tughlakabad Loco Shed.[5] It will also produce WDG4G (ES43ACmi, Customized for IR) Locomotives From General-Electric Transportation.
Market[edit]
Besides the Indian Railways, it regularly exports diesel-electric locomotives[5] and has supplied locomotives to other countries such as Sri Lanka, Nepal, Bangladesh, Mali, Senegal,[7]Sudan[8]Tanzania, Angola, and Vietnam and also to a few users within India, such as ports, large power and steel plants and private railways.[9][10]
Ancillary[edit]
In July 2006, DLW outsourced manufacture of some passenger and freight locomotives to Parel Workshop, Central Railway, Mumbai.[11]
See also[edit]
References[edit]
- ^http://www.newindianexpress.com/pti-news/2017/oct/30/govt-appoints-five-new-general-managers-in-railways-1687308.html
- ^'Diesel Locomotive Works (DLW)'. Retrieved 11 January 2008.
- ^'DLW meets annual target ahead of the deadline'. The Indian express Group. 17 March 2008. Archived from the original on 23 August 2009.
- ^'Rlys plan to make more locomotives to tap global mkt'. The Financial Express. 8 August 2008.
- ^ abc'DLW sets new record in locomotive production'. Times of India. 1 January 2012. Retrieved 14 January 2012.
- ^'GM's Article'(PDF).
- ^'Indian Railways exports four diesel locomotives'. The Economic Times. 15 January 2008.
- ^'Rs. 80-crore target for railway spares export'. The Hindu. Chennai, India. 11 November 2004.
- ^'Retiring DLW GM flags off rail engine'. Times of India. 30 June 2009. Retrieved 14 January 2012.
- ^'IR to soon manufacture high power locomotives'. Times of India. 9 October 2010. Retrieved 14 January 2012.
- ^Verma, Kalpana (19 August 2008). 'Engine manufacturing unit at Parel a boon for Rlys'. Indian Express. Archived from the original on 22 January 2013. Retrieved 14 January 2012.
12.http://www.dlw.indianrailways.gov.in/view_section.jsp?lang=0&id=0,294,520
External links[edit]
Wikimedia Commons has media related to Diesel locomotives of India. |
Coordinates: 25°17′32″N82°57′35″E / 25.29227°N 82.95962°E
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The class YDM-4 is Indian Railways' workhorse diesel locomotive. The first units were imported fully built from the American Locomotive Company (Alco) in 1961. Since 1968, it has been manufactured in India by the Diesel Locomotive Works (DLW), Varanasi. The model name stands for metre gauge (Y), diesel (D), mixed traffic (M) engine. Bewafa song download mp3. The YDM-4 has been the most successful diesel locomotive in the metre gauge operation of Indian Railways.
The YDM-4A is a variant of the YDM-4 supplied by MLW . Originally equipped with vacuum brakes. Some were later equipped with dual brakes, particularly those working in the Northeast Frontier Railway were retrofitted with dual brake system by Lumding shed. The YDM-4 locos have a maximum speed of 100 km/h (62 mph),[1] restricted to 85 km/h (53 mph).[2]
- 2Sheds holding YDM-4
History[edit]
In the mid 1950s Indian Railways began introducing diesel locomotives to its metre gauge system. Metre gauge, though rare gauge today, used to be a dominant gauge that time. After the introduction of YDM-1 locomotives by North British, Indian Railway thought for more powerful ones and hence General Motors Electro-Motive Division (EMD) and the American Locomotive Company (ALCO) submitted designs of YDM-3 (12-567C) and YDM-4 respectively for new diesel locomotives. Each company supplied 30 locomotives in 1961. While YDM-3 was 13 ton lighter than the YDM-4, Indian Railways opted for the ALCo design because of the heavier axle load and technology agreement that would allow these locomotives to be manufactured in India. After Diesel Locomotive Works (DLW) completed construction of its factory in Varanasi, production of the locomotives began in India.Initial 30 YDM-4 locomotives supplied by American Locomotive Company (ALCo) in 1961 had the road numbers in #6020 to #6049 range. Another batch of 8 locomotives followed the route to India soon which had the road numbers in #6105-6112 range. YDM-4 #6113-6129 were built perhaps in 1964.Siliguri Diesel Locoshed was the first DLS to home YDM-4 locomotives in 1962. The very first YDM4 numbered as #6020 was allotted to New Guwahati Diesel Loco Shed which was an outbase of Siliguri DLS on 30/10/1962. The loco, however is assumed to be scrapped due to overage.
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YDM4 numbered in #6130 to #6198 range were built by Montreal Locomotive Works (MLW) in 1964 under the license of ALCo and were classified as YDM-4A. All the YDM-4 delivered till then were presumably based at three premier DLS across India namely Siliguri (SGUJ), Golden Rock (GOC) and Sabarmati (SBI).
The First YDM-4 built by Diesel Locomotive Works (DLW) Varanasi was #6199 christened as Hubli. This loco rolled out from DLW in 1968 and was dedicated to the nation by the then Deputy Prime Minister of India, Morarji Desai. DLW built at first locos in the range #6199 to #6258.
Another batch of YDM-4A were dispatched from MLW in 1969 in the range #6259 to #6288.
From 1969 till 1993 DLW produced YDM-4 locomotives for Indian Railways in the number range #6289 to #6769. Last YDM-4 was based at Rangapara North outbse of Siliguri DLS but later on transferred to Myanmar (Burma) Railways and possibly renumbered as DF1332.[3][better source needed]
Sheds holding YDM-4[edit]
Functional[edit]
- Chhapra Kachehri (satellite shed of Izatnagar)
- Coonoor (outbase of Golden Rock. YDM4 draws 56136 Mettupalayam Ooty Passenger from Coonoor to Udhagamandalam)
- Mavli (outbase of Phulera)
- Narkatiaganj (satellite shed, locos outbased from NER)
Dlw Varanasi
Non-functional[edit]
- Mysore (outbase of Golden Rock. Held 4 locos that worked on the Mysore Chamrajnagar line. MYS had its own logo and livery though it was a GOC Outbase)
- Katihar (outbase of Siliguri)
- Rangapara North (satellite of Siliguri shed)
Technical specifications[4][edit]
Manufacturers | Alco, MLW, DLW |
Engine | Alco 251-D, Inline-6, 1,400 hp (1,000 kW) (1,300 hp or 970 kW site rating) with Alco turbocharged engine. 1,100 rpm max, 400 rpm idle; 228 mm × 267 mm (8.98 in × 10.51 in) bore x stroke; compression ratio 12.5:1. |
Transmission | Electric, DC-DC (DC Generator and DC Traction motor) |
Traction motors | GE for original Alco and MLW models, BHEL for DLW |
Axle load | 12.0 t (11.8 long tons; 13.2 short tons) |
total weight | 72.0 t (70.9 long tons; 79.4 short tons) ALCo and DLW, 67.0 t (65.9 long tons; 73.9 short tons) MLW |
Bogies | Alco design cast frame trimount (Co-Co) bogies with asymmetrical arrangement of traction motors |
Starting TE | 18.94 t (18.64 long tons; 20.88 short tons) |
Continuous TE | 16.05 t (15.80 long tons; 17.69 short tons) |
References[edit]
- ^'YDM–4, YDM–4A'. IRFCA. Retrieved March 29, 2016.
- ^RDSO (19 August 1967). 'YDM4 Loco Max Operating Speed 85 kmph'(PDF). Research Designs and Standards Organisation (RDSO). Retrieved March 29, 2016.
- ^'YDM4 - About'.
- ^'[IRFCA] Indian Railways FAQ: Locomotives -- Specific classes : AC Electric'. www.irfca.org.