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Indian Locomotive Class WDM-7
The WDM-7 is a diesel-electric locomotive of Indian Railways. It has been manufactured by Banaras Locomotive Works (BLW), Varanasi. The model name stands for broad gauge (W), diesel (D), mixed traffic (M) engine. Today, these are found exclusively at Chennai Central and nearby area. __TOC__ These units have been retro-fitted with air brakes, in addition to the original vacuum brakes. The WDM-7 locos have a maximum speed of , restricted to when run long hood forward - the gear ratio is 94:17. History Fifteen of these locomotives (road numbers #11001 to #11015) were built from 1987 to 1989 as a low-powered, “lightweight” version of the original ALCO. Like the WDM-6, maybe IR wanted a lower powered locomotive to handle small rake local and passenger services. However, all sheds declined them and they ended up at Ernakulam where they were used to handle local and shuttle services with good degrees of efficiency. Becoming aware of their abilities, SR moved all the WDM-7s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bio-diesel
Biodiesel is a form of diesel fuel derived from plants or animals and consisting of long-chain fatty acid esters. It is typically made by chemically reacting lipids such as animal fat (tallow), soybean oil, or some other vegetable oil with an alcohol, producing a methyl, ethyl or propyl ester by the process of transesterification. Unlike the vegetable and waste oils used to fuel converted diesel engines, biodiesel is a drop-in biofuel, meaning it is compatible with existing diesel engines and distribution infrastructure. However, it is usually blended with petrodiesel (typically to less than 10%) since most engines cannot run on pure Biodiesel without modification. Biodiesel blends can also be used as heating oil. The US National Biodiesel Board defines "biodiesel" as a mono-alkyl ester. Blends Blends of biodiesel and conventional hydrocarbon-based diesel are most commonly distributed for use in the retail diesel fuel marketplace. Much of the world uses a system kn ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diesel-electric Locomotive
A diesel locomotive is a type of railway locomotive in which the prime mover is a diesel engine. Several types of diesel locomotives have been developed, differing mainly in the means by which mechanical power is conveyed to the driving wheels. Early internal combustion locomotives and railcars used kerosene and gasoline as their fuel. Rudolf Diesel patented his first compression-ignition engine in 1898, and steady improvements to the design of diesel engines reduced their physical size and improved their power-to-weight ratios to a point where one could be mounted in a locomotive. Internal combustion engines only operate efficiently within a limited power band, and while low power gasoline engines could be coupled to mechanical transmissions, the more powerful diesel engines required the development of new forms of transmission. This is because clutches would need to be very large at these power levels and would not fit in a standard -wide locomotive frame, or wear too qu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rail Transport In India
Rail transport in India is an important mode of conveyance for people and goods in India. Indian Railways (IR) is the primary operator of rail operations throughout the country. IR is a state-owned organisation of the Ministry of Railways, which historically had its own government budget. Between 2019 and 2020, 22.15 million passengers used the Indian Railways network daily. In the same period, 3.32 million metric tons of freight was also shipped daily on the IR network. Other locally owned public corporations operate various suburban and urban railways throughout the country, such as Chennai Metro and the trams in Kolkata. Private sector operations currently exist only for freight trains and railroads, exclusively for non-passenger usage, but there were renewed efforts in 2020 to encourage private sector involvement in the running of passenger trains. In March 2020, the national rail network comprised of track over a route of and 7,325 stations. India's nat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Diesel Locomotives Of India
This article lists the diesel locomotives that have operated or are operating on Indian Railways. Classification Locomotives were classified by track gauge, motive power, function and power (or model number) in a four- or five-letter code. The first letter denotes the track gauge. The second letter denotes motive power (diesel or electric), and the third letter denotes use (goods, passenger, mixed or shunting). The fourth letter denotes a locomotive's chronological model number. In 2002, a new classification system was adopted. For newer diesel locomotives, the fourth letter denotes their horsepower range. Not all diesel locomotives were reclassified, and the fourth letter continues to denotes their model number. A locomotive may have a fifth letter, generally denoting a technical variant, subclass or subtype: a variation in the basic model or series, or a different motor or manufacturer. Under the new system, the fifth letter further refines horsepower in 100-hp increments: ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diesel Loco Shed, Golden Rock
Diesel Loco Shed, Golden Rock is an engine shed located in Golden Rock, Tiruchirappalli, Tamil Nadu in India. It is located north of Golden Rock railway station, falling under Tiruchirappalli railway division. It is the largest of the four locomotive shed under the Southern Railway zone of Indian Railways. History and developments The foundation stone for the shed was laid on the 25th of December, 1971 by the then Minister of Railways (India), Railway Minister, K. Hanumanthaiah. The shed was open for operations in 1975 with a total area of and covered area of . The shed initially homed 45 of the Indian locomotive class YDM-4, YDM-4 class Metre-gauge railway, metre-gauge locomotives. Three subsequent expansions were taken up which resulted in the holding capacity being increased to 100 metre gauge locomotives (1998), 40 Broad-gauge railway, broad-gauge locomotives (1993) and 100 broad gauge locomotives (2000). Infrastructure The shed was started as a metre-gauge shed. Howe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diesel Loco Shed, Erode
Diesel Loco Shed, Erode is an engine shed located on Erode–Chennimalai road in Erode, Tamil Nadu, India. Being closely located to Erode Junction Railway Station, the shed falls under Salem railway division of Southern Railway zone. History The shed was opened and became operationally active since September 1966, spreading over a total area of and covered area of . Operations Being one of the four diesel engine sheds in Southern Railway under the territory of Salem railway division, various major and minor maintenance schedules of diesel locomotives are being carried out here. Apart from serving the parent division, the locos belonging to the shed also serves the unelectrified routes of Madurai railway division, in addition to locos from Golden Rock. To provide space for electric locomotives, all the EMDs (WDG-4 and WDP-4D), WDM-3A and WDG-3A were transferred to Golden Rock. Locomotives See also * Diesel Loco Shed, Ernakulam * Diesel Loco Shed, Golden Rock * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Indian Locomotive Class WDM-2
The Indian locomotive class WDM-2 is a class of diesel-electric locomotive that was developed in 1962 by American Locomotive Company (ALCO) for Indian Railways. The model name stands for broad gauge (W), Diesel (D), Mixed traffic (M) engine, 2nd generation (2). They entered service in 1962. A total of more than 2,700 WDM-2 was built at ALCO and Banaras Locomotive Works (BLW or DLW, as it was formerly Diesel Locomotive Works), Varanasi between 1962 and 1998, which made them the most numerous class of mainline diesel locomotive until its successor the WDM-3A. The WDM-2 is one of the most successful locomotives of Indian Railways serving both passenger and freight trains for over 60 years. A few WDM-2 units were exported to neighbouring countries like Sri Lanka and Bangladesh. Despite the introduction of more modern types of locomotives like WDG-4 and electrification, a significant number are still in use, both in mainline and departmental duties. As of April 2022, 10 locomotive ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tondiarpet Railway Station
Tondiarpet railway station is one of the railway station of the Chennai Central–Gummidipoondi section of the Chennai Suburban Railway Network. It serves the neighbourhood of Tondiarpet, a suburb of Chennai, and is located 5 km north of Chennai Central railway station. It has an elevation of 5 m above sea level. History The lines at the station were electrified on 13 April 1979, with the electrification of the Chennai Central–Gummidipoondi section. Diesel loco shed Tondiarpet diesel loco shed is located to the north of the station. Established in 1972 with the induction of a WDS4B-model diesel locomotive (WDS4B #19202), the shed was built to cater the shunting requirements of the marshalling yard at Tondiarpet, the goods sheds at Royapuram and Salt Cotaurs, and the coaching depot at Basin Bridge in Chennai division. With the augmentation of the fleet of WDS4B locos to 64, they were used in other locations in other divisions. In 2001, these were replaced with the W ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diesel Loco Shed, Ernakulam
Diesel Loco Shed, Ernakulam is a motive power depot performing locomotive maintenance and repair facility for diesel locomotives of the Indian Railways, located at (ERS) of the Southern Railway zone in the city of Kochi, Kerala. It is one of the four diesel loco sheds of the Southern Railway, the others being at Tondiarpet (TNP) at Chennai, Erode (ED) and Golden Rock (GOC) at Trichy and the only locomotive shed in Kerala and the southernmost loco shed in India. Although it is in Kerala, its locomotives are used mostly in Goa and Maharashtra, and very rarely near the shed for passenger trains. History Steam locomotive sheds used to exist at (QLN) and (SRR) until the late 1970s. After Southern Railway set a deadline to eliminate all steam locomotive operations by 1985, a push was given towards establishing diesel as the primary motive power, and the Ernakulam Diesel locomotive shed was established in the year 1981 to meet these ends and the needs of exponentially inc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Indian Locomotive Class WDM-6
The Indian locomotive class WDM-6 is a class of Diesel–electric locomotive, Diesel locomotive that was developed in 1981 by Banaras Locomotive Works (BLW), Varanasi for Indian Railways. The model name stands for 5 ft 6 in gauge railway, broad gauge (W), Diesel (D), Mixed traffic (M) engine, 6th generation (6). They entered service in 1981. A total of 2 WDM-6 was built at between 1981 and 1982. They were decommissioned at Barddhaman Junction railway station, Burdwan (BWN) in 2011. History WDM-6 was developed to address the need for locomotive to haul commuter and suburban services. They had the same 1350 hp engine and hood superstructure as the Indian locomotive class YDM-4, YDM-4 locos with Indian locomotive class WDM-2, WDM-2 under frame. but these locos were underpowered and subsequently relegated to shunting and departmental duties. They were based at the diesel locomotive shed in Barddhaman Junction railway station, Burdwan (BWN) since the 1980s. One unit was seen sh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vacuum Brake
The vacuum brake is a braking system employed on trains and introduced in the mid-1860s. A variant, the automatic vacuum brake system, became almost universal in British train equipment and in countries influenced by British practice. Vacuum brakes also enjoyed a brief period of adoption in the United States, primarily on narrow-gauge railroads. Their limitations caused them to be progressively superseded by compressed air systems starting in the United Kingdom from the 1970s onward. The vacuum brake system is now obsolete; it is not in large-scale usage anywhere in the world, other than in South Africa, largely supplanted by air brakes. Introduction In the earliest days of railways, trains were slowed or stopped by the application of manually applied brakes on the locomotive and in brake vehicles through the train, and later by steam power brakes on locomotives. This was clearly unsatisfactory, given the slow and unreliable response times (each brake being separately applied ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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