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Wheel Slide Protection
Wheel slide protection and wheel slip protection are railway terms used to describe automatic systems used to detect and prevent wheel-slide during braking or wheel-slip during acceleration. This is analogous to ABS and traction control systems used on motor vehicles. It is particularly important in slippery rail conditions. Sanding Sanding is one method of reducing wheel slip or slide. Locomotives and Multiple units have sandboxes which can deliver dry sand to the rails in front of the wheels. This may be initiated automatically when the Wheel Slide Protection system senses loss of adhesion, or the driver can operate it manually. Sanding may be connected to a computer system that determines the train's direction and where the sand should be applied: either forward or aft of the trucks. In older locomotives there was a manual lever attached to a valve that had three positions: Off, Forward, and Aft. Automatic control systems Wheel Slide Protection (WSP) equipment is generall ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anti-lock Braking System
An anti-lock braking system (ABS) is a safety anti-skid braking system used on aircraft and on land vehicles, such as cars, motorcycles, trucks, and buses. ABS operates by preventing the wheels from locking up during braking, thereby maintaining tractive contact with the road surface and allowing the driver to maintain more control over the vehicle. ABS is an automated system that uses the principles of threshold braking and cadence braking, techniques which were once practiced by skillful drivers before ABS was widespread. ABS operates at a much faster rate and more effectively than most drivers could manage. Although ABS generally offers improved vehicle control and decreases stopping distances on dry and some slippery surfaces, on loose gravel or snow-covered surfaces ABS may significantly increase braking distance, while still improving steering control. Since ABS was introduced in production vehicles, such systems have become increasingly sophisticated and effectiv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Knorr Bremse
Knorr-Bremse AG is a German manufacturer of braking systems for rail and commercial vehicles that has operated in the field for over 110 years. Other products in Group's portfolio include intelligent door systems, control components, air conditioning systems for rail vehicles, torsional vibration dampers, and transmission control systems for commercial vehicles. In 2019, the Group's workforce of over 28,000 achieved worldwide sales of EUR 6.93 billion. The Group has a presence in over 30 countries, at 100 locations. On 4 November 2020, it was announced that Knorr-Bremse AG had chosen Dr. Jan Michael Mrosik to be a member of the Executive Board and CEO. The appointment takes effect as of 1 January 2021. History Foundation Engineer Georg Knorr established ''Knorr-Bremse GmbH'' in 1905 in Boxhagen-Rummelsburg, Neue Bahnhofstraße, near Berlin (since 1920 part of Berlin- Friedrichshain). Its production of railway braking systems derived from a company ("Carpenter & ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Decelostat
Decelostat is a wheel slide protection system developed by Westinghouse Air Brake Company that is used in railroad cars to prevent over-braking that causes wheel-slide, a condition of reduction in friction between train wheels and rails. This low wheel/rail adhesion condition reduces braking performance and causes damage to wheels (wheel spalling and wheel flat) and the rails. When over-braking, the Decelostat will detect rapid deceleration of wheel rotation caused by creep in the wheelset, another condition preceding the wheel-slide. Once detected, the system manipulates brake valves to reduce brake pressure. This allows the affected wheels to rotate at the speeds that are more comparable to the speeds of the train to gain the wheel/rail adhesion again. When that happens, the system deactivates to allow the brake pressure to be restored to continue braking. The system may reactivate again if it detects another creep. The cycle of activation and deactivation is usually brief b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
DeltaRail Group
Resonate Group Limited is a British software, technology and services company. It was called DeltaRail Group Limited until renamed and re-branded in September 2016. The company was formed from Rail business of AEA Technology plc which was acquired as part of a secondary private equity portfolio sale to Vision Capital in 2006. Previously, in 1998, AEA Technology plc formed the Rail business having acquired British Rail Research from the British Railways Board, and a number of other engineering software organisations. On 21 January 2015, the four Executive Directors of the company acquired the business out of private equity ownership. Resonate provides software, technology and services in three core areas; signalling control software, operational software and asset management products. Resonate develops and maintains the Integrated Electronic Control Centre (IECC) widely used on Britain's rail networks.Control Systems Resonate Web Site/ref> The company has UK offices in Der ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ferrovie Dello Stato
Ferrovie dello Stato Italiane S.p.A. ( "Italian Railways of the State"; previously only Ferrovie dello Stato, hence the abbreviation FS) is Italy's national state-owned railway holding company that manages transport, infrastructure, real estate services and other services in Italy and other European countries. History Early years The company was instituted by an act on 22 April 1905, taking control over the majority of the national railways, which up until that time were privately owned and managed. The president was nominated by the government. The first Director General was Riccardo Bianchi. In June 1912 Ferrovie dello Stato owned 5021 steam locomotives, 151 railcars, 10,037 coaches, 3371 baggage cars and 92,990 goods wagons.Victor Freiherr von Röll''Enzyklopädie des Eisenbahnwesens.''Band 6, Urban & Schwarzenberg, Berlin, 1914, p. 297. (in German) With the rise of Fascism, a centralization policy was carried out. The board of directors and chief administrator office ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Deutsche Bahn
The (; abbreviated as DB or DB AG) is the national railway company of Germany. Headquartered in the Bahntower in Berlin, it is a joint-stock company ( AG). The Federal Republic of Germany is its single shareholder. describes itself as the second-largest transport company in the world, after the German postal and logistics company / DHL, and is the largest railway operator and infrastructure owner in Europe. Deutsche Bahn was the largest railway company in the world by revenue in 2015; in 2019, DB Passenger transport companies carried around 4.8 billion passengers, and DB logistics companies transported approximately 232 million tons of goods in rail freight transport. The group is divided into several companies, including '' DB Fernverkehr'' (long-distance passenger), '' DB Regio'' (local passenger services) and '' DB Cargo'' (rail freight). The Group subsidiary '' DB Netz'' also operates large parts of the German railway infrastructure, making it the largest rail networ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Union Internationale Des Chemins De Fer
The International Union of Railways (UIC, french: Union internationale des chemins de fer) is an international rail transport industry body. History The railways of Europe originated as many separate concerns, and there were many border changes after World War I and the Treaty of Versailles. Colonial railways were the responsibility of the mother country. Into this environment the UIC was created on 17 October 1922, with the aim of standardising industry practices. Ticket revenue sharing was originally undertaken with the UIC Franc currency equivalent. UIC classification and UIC Country Codes allowed precise determination of rolling stock capabilities and ownership, with wagons assigned unique UIC wagon numbers. The 1990s GSM-R radio telecommunication system is an international interoperability specification covering voice and signalling systems for railway communications whose specification is maintained by the International Union of Railways project European Rail Traff ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
British Standards Institution
The British Standards Institution (BSI) is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses. History BSI was founded as the Engineering Standards Committee in London in 1901.Robert C McWilliam. BSI: The first hundred years. 2001. Thanet Press. London It subsequently extended its standardization work and became the British Engineering Standards Association in 1918, adopting the name British Standards Institution in 1931 after receiving a Royal Charter in 1929. In 1998 a revision of the Charter enabled the organization to diversify and acquire other businesses, and the trading name was changed to BSI Group. The Group now operates in 195 countries. The core business remains standards and standards related services, although the majority of the Group's revenue comes from management systems assessment and certification work. In ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wabtec
Wabtec Corporation (derived from Westinghouse Air Brake Technologies Corporation) is an American company formed by the merger of the Westinghouse Air Brake Company (WABCO) and MotivePower Industries Corporation in 1999. It is headquartered in Pittsburgh, Pennsylvania. Wabtec manufactures products for locomotives, freight cars and passenger transit vehicles, and builds new locomotives up to . The company purchased GE Transportation on February 25, 2019. History The company's origins go back to 1869 with the foundation of the Westinghouse Air Brake Company. That company (also known as WA&B later as WABCO) became independent in 1990 via a management buy-out, and went public in 1995. Another company, WABCO Vehicle Control Systems, also created from the Westinghouse Brake Company, is independent of Wabtec and was spun off by American Standard Companies in 2007, and is today part of German automotive components firm ZF Friedrichshafen. The other company forming Wabtec, Moti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Faiveley Transport
Faiveley Transport (), formerly Faiveley, is an international manufacturer and supplier of equipment for the railway industry founded in 1919. It introduced the single-arm pantograph in 1955. The company has subsidiaries in more than 24 countries. The majority of Faiveley Transport's outstanding stock is owned by Wabtec, which acquired majority stock ownership from the Faiveley family in 2016. History First years In 1919, Louis Faiveley founded in Saint-Ouen, France, the ''Établissements Louis Faiveley'', a small assembly shop centered on electromechanical parts. It soon grew and became one of the French railway system's leading suppliers. It introduced in 1923 its first pantograph. In 1930, it also ventured into the manufacture of door systems for trains. By the 1930s, it was already one of France's leading companies in all its fields of activity. In 1935, the company became a Société Anonyme, although the shares' majority stayed in hands of the Faiveley family. After t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coefficient Of Friction
Friction is the force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against each other. There are several types of friction: *Dry friction is a force that opposes the relative lateral motion of two solid surfaces in contact. Dry friction is subdivided into ''static friction'' (" stiction") between non-moving surfaces, and ''kinetic friction'' between moving surfaces. With the exception of atomic or molecular friction, dry friction generally arises from the interaction of surface features, known as asperities (see Figure 1). *Fluid friction describes the friction between layers of a viscous fluid that are moving relative to each other. *Lubricated friction is a case of fluid friction where a lubricant fluid separates two solid surfaces. *Skin friction is a component of drag, the force resisting the motion of a fluid across the surface of a body. *Internal friction is the force resisting motion between the elements making up a s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Traction Control System
A traction control system (TCS), also known as ASR (from german: Antriebsschlupfregelung, lit=drive slippage regulation), is typically (but not necessarily) a secondary function of the electronic stability control (ESC) on production motor vehicles, designed to prevent loss of traction (i.e., wheelspin) of the driven road wheels. TCS is activated when throttle input and engine power and torque transfer are mismatched to the road surface conditions. The intervention consists of one or more of the following: *Brake force applied to one or more wheels *Reduction or suppression of spark sequence to one or more cylinders *Reduction of fuel supply to one or more cylinders *Closing the throttle, if the vehicle is fitted with drive by wire throttle *In turbocharged vehicles, a boost control solenoid is actuated to reduce boost and therefore engine power. Typically, traction control systems share the electrohydraulic brake actuator (which does not use the conventional master cylinder ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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