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Quattro (four-wheel-drive System)
Quattro (meaning ''four'' in Italian language, Italian and stylized as quattro) is the trademark used by the automotive industry, automotive brand Audi to indicate that all-wheel drive (AWD) technologies or systems are used on specific models of its automobiles.Audi.com - Glossarquattro The word "quattro" is a registered trademark of Audi AG, a subsidiary of the Germany, German automotive enterprise, Volkswagen Group. Quattro was first introduced in 1980 on the permanent four-wheel drive Audi Quattro model, often referred to as the ''wiktionary:Ur, Ur-Quattro'' (meaning "original" or "first"). The term quattro has since been applied to all subsequent Audi AWD models. Due to the nomenclature rights derived from the trademark, the word quattro is now always spelled with a lower case "q" by the manufacturer, in honour of its former namesake. Other companies in the Volkswagen Group have used different trademarks for their 4WD vehicles. While Audi has always used the term "quatt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Four-wheel Drive
A four-wheel drive, also called 4×4 ("four by four") or 4WD, is a two-axled vehicle drivetrain capable of providing torque to all of its wheels simultaneously. It may be full-time or on-demand, and is typically linked via a transfer case providing an additional output drive shaft and, in many instances, additional gear ranges. A four-wheel drive vehicle with torque supplied to both axles is described as "all-wheel drive" (AWD). However, "four-wheel drive" typically refers to a set of specific components and functions, and intended off-road application, which generally complies with modern use of the terminology. Definitions Four-wheel-drive systems were developed in many different markets and used in many different vehicle platforms. There is no universally accepted set of terminology that describes the various architectures and functions. The terms used by various manufacturers often reflect marketing rather than engineering considerations or significant technical diffe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Differential (mechanical Device)
A differential is a gear train with three drive shafts that has the property that the rotational speed of one shaft is the average of the speeds of the others. A common use of differentials is in motor vehicles, to allow the wheels at each end of a drive axle to rotate at different speeds while cornering. Other uses include clocks and analogue computers. Differentials can also provide a gear ratio between the input and output shafts (called the "axle ratio" or "diff ratio"). For example, many differentials in motor vehicles provide a gearing reduction by having fewer teeth on the pinion than the ring gear. History Milestones in the design or use of differentials include: * 100 BCE–70 BCE: The Antikythera mechanism has been dated to this period. It was discovered in 1902 on a shipwreck by sponge divers, and modern research suggests that it used a differential gear to determine the angle between the ecliptic positions of the Sun and Moon, and thus the phase of the Moon. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Torque
In physics and mechanics, torque is the rotational analogue of linear force. It is also referred to as the moment of force (also abbreviated to moment). The symbol for torque is typically \boldsymbol\tau, the lowercase Greek letter ''tau''. When being referred to as moment of force, it is commonly denoted by . Just as a linear force is a push or a pull applied to a body, a torque can be thought of as a twist applied to an object with respect to a chosen point; for example, driving a screw uses torque to force it into an object, which is applied by the screwdriver rotating around its axis to the drives on the head. Historical terminology The term ''torque'' (from Latin , 'to twist') is said to have been suggested by James Thomson and appeared in print in April, 1884. Usage is attested the same year by Silvanus P. Thompson in the first edition of ''Dynamo-Electric Machinery''. Thompson describes his usage of the term as follows: Today, torque is referred to using d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Longitudinal Engine
In automotive engineering, a longitudinal engine is an internal combustion engine in which the crankshaft is oriented along the long axis of the vehicle, from front to back. See also: transverse engine Use This type of motor is usually used for rear-wheel drive cars, except for some Audi, SAAB, the Oldsmobile Toronado, and the 1967 Cadillac Eldorado equipped with longitudinal engines in front wheel drive. In front-wheel drive cars a transverse engine is usually used. Trucks often have longitudinal engines with rear-wheel drive. For motorcycles, the use of a particular type depends on the drive: in the case of a chain or belt drive a transverse engine is usually used, and with shaft drives a longitudinal engine. Longitudinal engines in motorcycles do have one disadvantage: the "tipping point" of the crankshaft tilts along the entire motorcycle to a greater or lesser degree when accelerating. This is partly resolved by having other components, such as the generator and the ge ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Transmission (mechanics)
A transmission (also called a gearbox) is a mechanical device invented by Louis Renault (industrialist), Louis Renault (who founded Renault, Renault) which uses a gear set—two or more gears working together—to change the speed, direction of rotation, or torque multiplication/reduction in a machine. Transmissions can have a single fixed-gear ratio, multiple distinct gear ratios, or continuously variable ratios. Variable-ratio transmissions are used in all sorts of machinery, especially vehicles. Applications Early uses Early transmissions included the right-angle drives and other gearing in windmills, horse-powered devices, and steam engine, steam-powered devices. Applications of these devices included pumps, mill (grinding), mills and Hoist (device), hoists. Bicycles Bicycles traditionally have used hub gear or Derailleur gear transmissions, but there are other more recent design innovations. Automobiles Since the torque and Horsepower, power output of an interna ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Internal Combustion Engine
An internal combustion engine (ICE or IC engine) is a heat engine in which the combustion of a fuel occurs with an oxidizer (usually air) in a combustion chamber that is an integral part of the working fluid flow circuit. In an internal combustion engine, the expansion of the high-temperature and high-pressure gases produced by combustion applies direct force to some component of the engine. The force is typically applied to pistons (reciprocating engine, piston engine), turbine blades (gas turbine), a Wankel engine, rotor (Wankel engine), or a propulsive nozzle, nozzle (jet engine). This force moves the component over a distance. This process transforms chemical energy into kinetic energy which is used to propel, move or power whatever the engine is attached to. The first commercially successful internal combustion engines were invented in the mid-19th century. The first modern internal combustion engine, the Otto engine, was designed in 1876 by the German engineer Nicolaus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bundeswehr
The (, ''Federal Defence'') are the armed forces of the Germany, Federal Republic of Germany. The is divided into a military part (armed forces or ''Streitkräfte'') and a civil part, the military part consists of the four armed forces: German Army, German Navy, German Air Force and Cyber and Information Domain Service (Germany), Cyber and Information Domain Service, which are supported by the Bundeswehr Support Area. , the had a strength of 180,215 active-duty military personnel and 80,761 civilians, placing it among the 30 largest military forces in the world, and making it the second largest in the European Union behind French Armed Forces, France. In addition, the has approximately 34,600 reserve personnel (2024). With German military expenditures at $88.5 billion (2024), the is the fourth-highest-funded military in the world, though military expenditures have until recently remained low at an average at 1.5% of national GDP, well below the non-binding NATO targ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Volkswagen Iltis
The Volkswagen Type 183, more commonly known as the Iltis (German language, German for European polecat, polecat), is a military vehicle built by Volkswagen for use by the German military. The Iltis was formerly built under licence in Canada by Bombardier Inc. Although the two vehicles were briefly offered simultaneously, the Type 183 effectively replaced the Volkswagen 181, Type 181. History The German military had been part of a cooperative effort, beginning in the late 1960s, to create what was dubbed the "Europa Jeep", an amphibious four wheel drive vehicle that could replace the small all-terrain transport vehicles being used by several of the participating governments. With development taking longer than expected, the German military requested for something inexpensive to be built in small quantities to fill their need for additional small transport vehicles while the Europa Jeep project was still undergoing design research. Volkswagen responded to the request, designing ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Volkswagen Beetle
The Volkswagen Beetle, officially the Volkswagen Type 1, is a small family car produced by the German company Volkswagen from 1938 to 2003. One of the most iconic cars in automotive history, the Beetle is noted for its distinctive shape. Its production period of 65 years is the longest of any single generation of automobile, and its total production of over 21.5 million is the most of any car of a single car platform, platform. The Beetle was conceived in the early 1930s. The leader of Nazi Germany, Adolf Hitler, decided there was a need for a ''people's car''—an inexpensive, simple, mass-produced car—to serve Germany's new road network, the ''Reichsautobahn''. The German engineer Ferdinand Porsche and his design team began developing and designing the car in the early 1930s, but the fundamental design concept can be attributed to Béla Barényi in 1925, predating Porsche's claims by almost ten years. The result was the Volkswagen Type 1 and the introduction of the Volkswage ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Military Vehicles
Military vehicles include all land combat and transport vehicles, excluding rail-based, which are designed for or are in significant use by military forces throughout the world. See also list of armoured fighting vehicles. # * 0-10 Light tank (Soviet Union; pre-World War II) * 10TP light cruiser prototype (Poland; pre-World War II) * 14TP medium cruiser prototype (Poland; pre-World War II) * 1V152 8×8 command and forward observation vehicle based on the BTR-80 (Soviet Union; Cold War/modern) * 20/25TP medium tank concept (Poland; pre-World War II) * 2K22 Tunguska Soviet tracked Self-propelled Anti-Aircraft Weapon (Soviet Union; Cold War/modern) * 2S1 Gvozdika self propelled 122 mm howitzer (also known as M1971 and M1974) (Soviet Union; Cold War) * 2S3 Akatsiya self-propelled 152 mm howitzer (also known as M1973) (Soviet Union; Cold War) * 2S4 Tyulpan self-propelled 240 mm mortar (also known as M1975) (Soviet Union; Cold War) * 2S5 Giatsint-S self-propel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Volkswagen Kommandeurswagen
The Volkswagen Typ 87, also known as the ''Kommandeurswagen'', is a World War II, four-wheel-drive version of the Volkswagen Beetle. It was produced from 1941 to 1944 by the Volkswagen plant, primarily for high officers of the ''Wehrmacht'' (German armed forces). The ''Wehrmacht'' classified the Kommandeurswagen as ''leichter geländegängiger PKW, 4-sitziger, 4-radgetriebener Geländewagen Typ 87''.Mayer, p.34 ("light offroad passenger car, four seat, four-wheel drive offroad vehicle Type 87"). The engine and drive-train, including portal geared wheel hubs, are the same as in the Volkswagen Typ 166 ''Schwimmwagen'' amphibious vehicle. 564 units of the Kommandeurswagen were produced;Mayer, p.33 in November 1946,Mayer, p.47 the Volkswagen plant — by then under British control — produced two more vehicles using spare parts from stores. Description The Typ 87 is a two-door offroad saloon. The visual appearance is similar to the ''KdF-Wagen'', because the ''KdF-Wagen'' body ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
