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Rocar DAC
Rocar DAC was a series of buses and trolleybuses produced by the Autobuzul (later Rocar) company of Bucharest, Romania, between 1979 and 2000. They were available in both standard 12-meter models and articulated, 17-meter models. The first examples to enter service were DAC 117UDs that were made towards the end of 1978 and entered service with the ITB in Bucharest in April 1979. For much of the 1980s and early 1990s, these buses and trolleybuses were the backbone of the urban transportation network of Romania since, throughout the 1980s, public transportation companies were not allowed to import any type of vehicle. The buses were designed and built in a period of severe shortages, the main emphasis being put on economizing material usage and simplicity of the design. Most buses of this type did not have power or assisted steering, and only a small number of buses, built in the early part of the project (1979-1982) employed automatic gearboxes, which were abandoned as soluti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rocar
Rocar (also T.V. or Autobuzul) was a van, light truck, bus and trolleybus manufacturer based in Bucharest, Romania. The firm also produced light offroad vehicles and later heavy road vehicles. During its existence, the company produced over 350,000 vehicles. History ''Tudor Vladimirescu (T.V.) Works'' ( ro, Uzinele Tudor Vladimirescu), named after the revolutionary Tudor Vladimirescu, was created in 1951, and the first production lines were made for rolling-stock equipment and agricultural machinery. From the 1960s much of T.V.'s motor vehicle production was based on use of domestic parts like components and mechanicals sourced from other Romanian manufacturers like ARO, Brasov, DAC, and SR. In 1956, the first bus was built on a truck frame, and in 1957 the production program was enlarged also for trolleybuses, mini-buses and pick-ups made after T.V.'s own designs. Beginning with 1968, Rocar started exporting vehicles in Eastern Europe, Africa, South America and Middle East and, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Horse Power
Horsepower (hp) is a unit of measurement of power, or the rate at which work is done, usually in reference to the output of engines or motors. There are many different standards and types of horsepower. Two common definitions used today are the mechanical horsepower (or imperial horsepower), which is about 745.7 watts, and the metric horsepower, which is approximately 735.5 watts. The term was adopted in the late 18th century by Scottish engineer James Watt to compare the output of steam engines with the power of draft horses. It was later expanded to include the output power of other types of piston engines, as well as turbines, electric motors and other machinery. The definition of the unit varied among geographical regions. Most countries now use the SI unit watt for measurement of power. With the implementation of the EU Directive 80/181/EEC on 1 January 2010, the use of horsepower in the EU is permitted only as a supplementary unit. History The development of the stea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Contactor
:''In semiconductor testing, contactors can also be referred to as the specialized socket that connects the device under test.'' :''In process industries, a contactor is a vessel where two streams interact, for example, air and liquid. See Gas-liquid contactor.'' A contactor is an electrically-controlled switch used for switching an electrical power circuit. A contactor is typically controlled by a circuit which has a much lower power level than the switched circuit, such as a 24-volt coil electromagnet controlling a 230-volt motor switch. Unlike general-purpose relays, contactors are designed to be directly connected to high-current load devices. Relays tend to be of lower capacity and are usually designed for both ''normally closed'' and ''normally open'' applications. Devices switching more than 15 amperes or in circuits rated more than a few kilowatts are usually called contactors. Apart from optional auxiliary low-current contacts, contactors are almost exclusively fitte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chopper (electronics)
In electronics, a chopper circuit is any of numerous types of electronic switching devices and circuits used in power control and signal applications. A chopper is a device that converts fixed DC input to a variable DC output voltage directly. Essentially, a chopper is an electronic switch that is used to interrupt one signal under the control of another. In power electronics applications, since the switching element is either fully on or fully off, its losses are low and the circuit can provide high efficiency. However, the current supplied to the load is discontinuous and may require smoothing or a high switching frequency to avoid undesirable effects. In signal processing circuits, use of a chopper stabilizes a system against drift of electronic components; the original signal can be recovered after amplification or other processing by a synchronous demodulator that essentially un-does the "chopping" process. Comparison (step down chopper and step up chopper) Comparison bet ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Contactors
:''In semiconductor testing, contactors can also be referred to as the specialized socket that connects the device under test.'' :''In process industries, a contactor is a vessel where two streams interact, for example, air and liquid. See Gas-liquid contactor.'' A contactor is an electrically-controlled switch used for switching an electrical power circuit. A contactor is typically controlled by a circuit which has a much lower power level than the switched circuit, such as a 24-volt coil electromagnet controlling a 230-volt motor switch. Unlike general-purpose relays, contactors are designed to be directly connected to high-current load devices. Relays tend to be of lower capacity and are usually designed for both ''normally closed'' and ''normally open'' applications. Devices switching more than 15 amperes or in circuits rated more than a few kilowatts are usually called contactors. Apart from optional auxiliary low-current contacts, contactors are almost exclusively fitte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Direct Current
Direct current (DC) is one-directional flow of electric charge. An electrochemical cell is a prime example of DC power. Direct current may flow through a conductor such as a wire, but can also flow through semiconductors, insulators, or even through a vacuum as in electron or ion beams. The electric current flows in a constant direction, distinguishing it from alternating current (AC). A term formerly used for this type of current was galvanic current. The abbreviations ''AC'' and ''DC'' are often used to mean simply ''alternating'' and ''direct'', as when they modify ''current'' or '' voltage''. Direct current may be converted from an alternating current supply by use of a rectifier, which contains electronic elements (usually) or electromechanical elements (historically) that allow current to flow only in one direction. Direct current may be converted into alternating current via an inverter. Direct current has many uses, from the charging of batteries to large power ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Regia Autonomă De Transport București
The Regia ("Royal house") was a two-part structure in Ancient Rome lying along the Via Sacra at the edge of the Roman Forum that originally served as the residence or one of the main headquarters of kings of Rome and later as the office of the '' pontifex maximus'', the highest religious official of Rome. It occupied a triangular patch of terrain between the Temple of Vesta, the Temple of Divus Julius and Temple of Antoninus and Faustina. Only the foundations of Republican/Imperial Regia remain. Like the Curia it was destroyed and rebuilt several times, as far back as the Roman monarchy. Studies have found multiple layers of similar buildings with more regular features, prompting the theory that this "Republican Regia" was to have a different use. History According to ancient tradition it was built by the second king of Rome, Numa Pompilius, as a royal palace. Indeed, the Latin term ''regia'' can be translated as ''royal residence''. It is said that he also built the Temp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Euro 2
The European emission standards are vehicle emission standards for pollution from the use of new land surface vehicles sold in the European Union and EEA member states and the UK, and ships in EU waters. The standards are defined in a series of European Union directives staging the progressive introduction of increasingly stringent standards. , the standards do not include non-exhaust emissions such as particulates from tyres and brakes. Details of Euro 7 have been postponed to 12 October 2022. Background In the European Union, emissions of nitrogen oxides (), total hydrocarbon (THC), non-methane hydrocarbons (NMHC), carbon monoxide (CO) and particulate matter (PM) are regulated for most vehicle types, including cars, trucks (lorries), locomotives, tractors and similar machinery, barges, but excluding seagoing ships and aeroplanes. For each vehicle type, different standards apply. Compliance is determined by running the engine at a standardised test cycle. Non-comp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Solaris Trollino
Solaris Trollino is a series of low-floor trolleybuses designed for public transport, produced since 1999 by the Polish company Solaris Bus & Coach. The power regulation electronics and traction motors are delivered by other companies, such as Škoda Electric, Kiepe Electric, or Cegelec. The first prototype was produced in 2001 and ran the first races on the Gdynia road network. Description and models There are four different length variants (the number indicates length in meters): *Solaris Trollino 12 (also sold as Škoda 26Tr Solaris) *Solaris Trollino 15 (also sold as Škoda 28Tr Solaris) - no longer in production *Solaris Trollino 18 (articulated, also sold as Škoda 27Tr Solaris) *Solaris Trollino 24 Solaris may refer to: Arts and entertainment Literature, television and film * ''Solaris'' (novel), a 1961 science fiction novel by Stanisław Lem ** ''Solaris'' (1968 film), directed by Boris Nirenburg ** ''Solaris'' (1972 film), directed by ... (bi-articulated, al ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kyiv
Kyiv, also spelled Kiev, is the capital and most populous city of Ukraine. It is in north-central Ukraine along the Dnieper River. As of 1 January 2021, its population was 2,962,180, making Kyiv the seventh-most populous city in Europe. Kyiv is an important industrial, scientific, educational, and cultural center in Eastern Europe. It is home to many high-tech industries, higher education institutions, and historical landmarks. The city has an extensive system of public transport and infrastructure, including the Kyiv Metro. The city's name is said to derive from the name of Kyi, one of its four legendary founders. During its history, Kyiv, one of the oldest cities in Eastern Europe, passed through several stages of prominence and obscurity. The city probably existed as a commercial center as early as the 5th century. A Slavic settlement on the great trade route between Scandinavia and Constantinople, Kyiv was a tributary of the Khazars, until its capture by the Varangian ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cluj-Napoca
; hu, kincses város) , official_name=Cluj-Napoca , native_name= , image_skyline= , subdivision_type1 = Counties of Romania, County , subdivision_name1 = Cluj County , subdivision_type2 = Subdivisions of Romania, Status , subdivision_name2 = County seat , settlement_type = Municipiu, City , leader_title = Mayor , leader_name = Emil Boc , leader_party = National Liberal Party (Romania), PNL , leader_title1 = Deputy Mayor , leader_name1 = Dan Tarcea (PNL) , leader_title2 = Deputy Mayor , leader_name2 = Emese Oláh (Democratic Alliance of Hungarians in Romania, UDMR) , leader_title3 = City Manager , leader_name3 = Gheorghe Șurubaru (PNL) , established_title= Founded , established_date = 1213 (first official record as ''Clus'') , area_total_km2 = 179.5 , area_total_sq_mi = 69.3 , area_metro_km2 = 1537.5 , elevation_m = 340 , population_as_of = 2011 Romanian census, 2011 , population_total = 324,576 , population_foot ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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