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Electric Raceabout
The Electric Raceabout (''ERA'') is an all-electric sports car developed by the Helsinki Metropolia University of Applied Sciences. It contains lithium-titanate batteries, four direct-drive electric motors, and a carbon fiber monocoque chassis with steel sub-frames. The ERA has an operational range of . Its total weight is with a battery pack. The power output of its engines is with a peak output of / 10 seconds. The engine's nominal torque is 1000 Nm with a peak torque of 3200 Nm. The ERA has a top speed of with acceleration in 6.0 seconds. The ERA was introduced in the summer of 2009 with a target to reach low-volume production. The ERA took part in the Automotive X Prize competition and came in second in its class. ERA made a new road-legal electric vehicle lap record in Nürburgring Nordschleife in September 2011. In the winter of 2011–2012, the ERA had its inverters, aerodynamics, and power steering upgraded – after improvements, ERA ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Battery Electric Vehicle
A battery electric vehicle (BEV), pure electric vehicle, only-electric vehicle, fully electric vehicle or all-electric vehicle is a type of electric vehicle (EV) that uses electrical energy exclusively from an electric vehicle battery, on-board battery pack to power one or more electric motor, electric traction motors, on which the vehicle solely relies for propulsion. This definition excludes hybrid electric vehicles (HEVs; including mild hybrid, mild, full hybrid, full and plug-in hybrids), which use internal combustion engines (ICEs) in adjunct to electric motors for propulsion; and fuel cell electric vehicles (FCEVs) and range extender, range-extended electric vehicles (REEVs), which consume fuel through a fuel cell or an ICE-driven electric generator, generator to produce electricity needed for the electric motors. BEVs have no fuel tanks and replenish their energy storage by plug-in electric vehicle, plugging into a charging station, electrical grid or getting a new bat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Inverter
A power inverter, inverter, or invertor is a power electronic device or circuitry that changes direct current (DC) to alternating current (AC). The resulting AC frequency obtained depends on the particular device employed. Inverters do the opposite of rectifiers which were originally large electromechanical devices converting AC to DC. The input voltage, output voltage and frequency, and overall power handling depend on the design of the specific device or circuitry. The inverter does not produce any power; the power is provided by the DC source. A power inverter can be entirely electronic or maybe a combination of mechanical effects (such as a rotary apparatus) and electronic circuitry. Static inverters do not use moving parts in the conversion process. Power inverters are primarily used in electrical power applications where high currents and voltages are present; circuits that perform the same function for electronic signals, which usually have very low currents and vol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Science And Technology In Finland
Science is a systematic discipline that builds and organises knowledge in the form of testable hypotheses and predictions about the universe. Modern science is typically divided into twoor threemajor branches: the natural sciences, which study the physical world, and the social sciences, which study individuals and societies. While referred to as the formal sciences, the study of logic, mathematics, and theoretical computer science are typically regarded as separate because they rely on deductive reasoning instead of the scientific method as their main methodology. Meanwhile, applied sciences are disciplines that use scientific knowledge for practical purposes, such as engineering and medicine. The history of science spans the majority of the historical record, with the earliest identifiable predecessors to modern science dating to the Bronze Age in Ancient Egypt, Egypt and Mesopotamia (). Their contributions to mathematics, astronomy, and medicine entered and shaped the Gree ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electric Sports Cars
Electricity is the set of physical phenomena associated with the presence and motion of matter possessing an electric charge. Electricity is related to magnetism, both being part of the phenomenon of electromagnetism, as described by Maxwell's equations. Common phenomena are related to electricity, including lightning, static electricity, electric heating, electric discharges and many others. The presence of either a positive or negative electric charge produces an electric field. The motion of electric charges is an electric current and produces a magnetic field. In most applications, Coulomb's law determines the force acting on an electric charge. Electric potential is the work done to move an electric charge from one point to another within an electric field, typically measured in volts. Electricity plays a central role in many modern technologies, serving in electric power where electric current is used to energise equipment, and in electronics dealing with electrical ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Metropolia University Of Applied Sciences
Metropolia may mean: * Metropolis (religious jurisdiction), overseen by a metropolitan bishop * Diocese, or more particularly Archdiocese * Metropolia, the pre-1970 general term for the Russian Orthodox Greek Catholic Church in U.S.A., now known as the Orthodox Church in America The Orthodox Church in America (OCA) is an Eastern Orthodox Christian church based in North America. The OCA consists of more than 700 parishes, missions, communities, monasteries and institutions in the United States, Canada and Mexico. In ... * ''Metropolia'', a Polish Business Magazine published in the UK since 2007 * Metropolia University of Applied Sciences, Helsinki Metropolitan Area, Finland {{disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electric Car
An electric car or electric vehicle (EV) is a passenger car, passenger automobile that is propelled by an electric motor, electric traction motor, using electrical energy as the primary source of propulsion. The term normally refers to a plug-in electric vehicle, typically a battery electric vehicle (BEV), which only uses energy stored in electric vehicle battery, on-board battery packs, but broadly may also include plug-in hybrid electric vehicle (PHEV), range extender, range-extended electric vehicle (REEV) and fuel cell electric vehicle (FCEV), which can convert electric power from other fuels via a electric generator, generator or a fuel cell. Compared to conventional internal combustion engine (ICE) vehicles, electric cars are quieter, more responsive, have superior energy conversion efficiency and no exhaust gas#Main motor vehicle emissions, exhaust emissions, as well as a typically lower overall carbon footprint from manufacturing to end of life (even when a power pl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Inari, Finland
Inari (; ; ; ; Norwegian language, Norwegian and ) is Finland's largest Municipalities of Finland, municipality by area (but one of the most sparsely populated), with four official languages, more than any other in the country. Its major sources of income are tourism, service industry, and cold climate testing. With the Siida (museum), Siida museum in the Inari (village), village of Inari, it is a center of Sámi peoples, Sámi culture, widely known as the "capital of Sámi culture". The Ivalo Airport, airport in Ivalo and the country's key north-south European route E75, European Route E75 (Finnish national road 4, Finland's National Road 4) bring summer and winter vacationers seeking resorts with access to a well-preserved, uncrowded natural environment. History The municipality was established in 1876. It was claimed from about 1942 to 1945 by the Quisling regime#Territorial claims, Quisling regime during the Nazi occupation of Norway. Geography Inari is the List of Finnish ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dynamometer
A dynamometer or "dyno" is a device for simultaneously measuring the torque and rotational speed ( RPM) of an engine, motor or other rotating prime mover so that its instantaneous power may be calculated, and usually displayed by the dynamometer itself as kW or bhp. In addition to being used to determine the torque or power characteristics of a machine under test, dynamometers are employed in a number of other roles. In standard emissions testing cycles such as those defined by the United States Environmental Protection Agency, dynamometers are used to provide simulated road loading of either the engine (using an engine dynamometer) or full powertrain (using a chassis dynamometer). Beyond simple power and torque measurements, dynamometers can be used as part of a testbed for a variety of engine development activities, such as the calibration of engine management controllers, detailed investigations into combustion behavior, and tribology. In the medical terminology, h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Power Steering
Power steering is a system for reducing a driver's effort to turn a steering wheel of a motor vehicle, by using a power source to assist steering. Hydraulic or electric actuators add controlled energy to the steering mechanism, so the driver can provide less effort to turn the steered wheels when driving at typical speeds, and considerably reduce the physical effort necessary to turn the wheels when a vehicle is stopped or moving slowly. Power steering can also be engineered to provide some artificial feedback of forces acting on the steered wheels. Hydraulic power steering systems for cars augment steering effort via an actuator, a hydraulic cylinder that is part of a servo system. These systems have a direct mechanical connection between the steering wheel and the steering linkage that steers the wheels. This means that power-steering system failure (to augment effort) still permits the vehicle to be steered using manual effort alone. Electric power steering systems use elec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aerodynamics
Aerodynamics () is the study of the motion of atmosphere of Earth, air, particularly when affected by a solid object, such as an airplane wing. It involves topics covered in the field of fluid dynamics and its subfield of gas dynamics, and is an important domain of study in aeronautics. The term ''aerodynamics'' is often used synonymously with gas dynamics, the difference being that "gas dynamics" applies to the study of the motion of all gases, and is not limited to air. The formal study of aerodynamics began in the modern sense in the eighteenth century, although observations of fundamental concepts such as aerodynamic drag were recorded much earlier. Most of the early efforts in aerodynamics were directed toward achieving Aircraft#Heavier-than-air – aerodynes, heavier-than-air flight, which was first demonstrated by Otto Lilienthal in 1891. Since then, the use of aerodynamics through mathematical analysis, empirical approximations, wind tunnel experimentation, and computer si ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
YouTube
YouTube is an American social media and online video sharing platform owned by Google. YouTube was founded on February 14, 2005, by Steve Chen, Chad Hurley, and Jawed Karim who were three former employees of PayPal. Headquartered in San Bruno, California, it is the second-most-visited website in the world, after Google Search. In January 2024, YouTube had more than 2.7billion monthly active users, who collectively watched more than one billion hours of videos every day. , videos were being uploaded to the platform at a rate of more than 500 hours of content per minute, and , there were approximately 14.8billion videos in total. On November 13, 2006, YouTube was purchased by Google for $1.65 billion (equivalent to $ billion in ). Google expanded YouTube's business model of generating revenue from advertisements alone, to offering paid content such as movies and exclusive content produced by and for YouTube. It also offers YouTube Premium, a paid subs ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sports Car
A sports car is a type of automobile that is designed with an emphasis on dynamic performance, such as Automobile handling, handling, acceleration, top speed, the thrill of driving, and Auto racing, racing capability. Sports cars originated in Europe in the early 1910s and are currently produced by many manufacturers around the world. Definition Definitions of sports cars often relate to how the car design is optimised for dynamic performance, without any specific minimum requirements; both a Triumph Spitfire and Ferrari 488 Pista can be considered sports cars, despite vastly different levels of performance. Broader definitions of sports cars include cars "in which performance takes precedence over carrying capacity", or that emphasise the "thrill of driving" or are marketed "using the excitement of speed and the glamour of the (race)track" However, other people have more specific definitions, such as "must be a two-seater or a 2+2 seater" or a car with two seats only. In the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
