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Quattro (four-wheel Drive System)
quattro (meaning ''four'' in Italian) is the trademark used by the 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 German automotive concern, Volkswagen Group. Quattro was first introduced in 1980 on the permanent four-wheel drive Audi Quattro model, often referred to as the '' 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", 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 "quattro", Volkswagen-branded cars initially used ''" syncro"'', but more recently, VW uses ''" 4motion"''. Škod ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Four-wheel Drive
Four-wheel drive, also called 4×4 ("four by four") or 4WD, refers to 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 d ... [...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, or a fixed multiple of that average. Functional description The following description of a differential applies to a traditional rear-wheel-drive car or truck with an open or limited slip differential combined with a reduction gearset using bevel gears (these are not strictly necessary; see spur-gear differential): Thus, for example, if the car is making a turn to the right, the main ring gear may make 10 full rotations. During that time, the left wheel will make more rotations because it has farther to travel, and the right wheel will make fewer rotations as it has less distance to travel. The sun gears (which drive the axle half-shafts) will rotate at different speeds relative to the ring gear (one faster, one slower) by, say, 2 full turns each (4 full turns relative to each other), resulting in the left wheel ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Torque
In physics and mechanics, torque is the rotational equivalent of linear force. It is also referred to as the moment of force (also abbreviated to moment). It represents the capability of a force to produce change in the rotational motion of the body. The concept originated with the studies by Archimedes of the usage of levers, which is reflected in his famous quote: "''Give me a lever and a place to stand and I will move the Earth''". Just as a linear force is a push or a pull, a torque can be thought of as a twist to an object around a specific axis. Torque is defined as the product of the magnitude of the perpendicular component of the force and the distance of the line of action of a force from the point around which it is being determined. The law of conservation of energy can also be used to understand torque. 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 . I ... [...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, front to back. Use This type of motor is usually used for rear-wheel drive cars, except for some Audi and SAAB models 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 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 gearbox, rotate in the opposite direction to the crankshaft. Most larger, "premium" veh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Transmission (mechanics)
Propulsion transmission is the mode of transmitting and controlling propulsion power of a machine. The term ''transmission'' properly refers to the whole drivetrain, including clutch, gearbox, prop shaft (for rear-wheel drive vehicles), differential, and final drive shafts. In the United States the term is sometimes used in casual speech to refer more specifically to the gearbox alone, and detailed usage differs. The transmission reduces the higher engine speed to the slower wheel speed, increasing torque in the process. Transmissions are also used on pedal bicycles, fixed machines, and where different rotational speeds and torques are adapted. Often, a transmission has multiple gear ratios (or simply "gears") with the ability to switch between them as the speed varies. This switching may be done manually (by the operator) or automatically (by a control unit). Directional (forward and reverse) control may also be provided. Single-ratio transmissions also exist, which simply ... [...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 ( piston engine), turbine blades (gas turbine), a rotor (Wankel engine), or a nozzle ( jet engine). This force moves the component over a distance, transforming chemical energy into kinetic energy which is used to propel, move or power whatever the engine is attached to. This replaced the external combustion engine for applications where the weight or size of an engine was more important. The first commercially successful internal combustion engine was created by Étienne Lenoir around 1860, and the first modern internal combustion engi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bundeswehr
The ''Bundeswehr'' (, meaning literally: ''Federal Defence'') is the armed forces of the Federal Republic of Germany. The ''Bundeswehr'' is divided into a military part (armed forces or ''Streitkräfte'') and a civil part, the military part consisting of the German Army, the German Navy, the German Air Force, the Joint Support Service, the Joint Medical Service, and the Cyber and Information Domain Service. , the ''Bundeswehr'' had a strength of 183,638 active-duty military personnel and 81,318 civilians, placing it among the 30 largest military forces in the world, and making it the second largest in the European Union behind France. In addition, the ''Bundeswehr'' has approximately 30,050 reserve personnel (2020). With German military expenditures at $56.0 billion, the ''Bundeswehr'' is the seventh highest-funded military in the world, though military expenditures remain relatively average at 1.3% of national GDP, well below the (non-binding) NATO target of 2%. Germany ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Volkswagen Iltis
The Volkswagen Type 183, more commonly known as the Iltis (German for 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, Type 183 effectively replaced the 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 an updated version of their Kübelwagen and designa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Volkswagen Beetle
The Volkswagen Beetle—officially the Volkswagen Type 1, informally in German (meaning "beetle"), in parts of the English-speaking world the Bug, and known by many other nicknames in other languages—is a two-door, rear-engine economy car, intended for five occupants (later, Beetles were restricted to four people in some countries), that was manufactured and marketed by German automaker Volkswagen (VW) from 1938 until 2003. The need for a ''people's car'' ( in German), its concept and its functional objectives were formulated by the leader of Nazi Germany, Adolf Hitler, who wanted a cheap, simple car to be mass-produced for his country's new road network (Reichsautobahn). Members of the National Socialist party, with an additional dues surcharge, were promised the first production, but the Spanish Civil War shifted most production resources to military vehicles to support the Nationalists under Francisco Franco. Lead engineer Ferdinand Porsche and his team took until 193 ... [...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 shhhuj 122mm howitzer (also known as M1971 and M1974) (Soviet Union; Cold War) * 2S3 Akatsiya self-propelled 152mm howitzer (also known as M1973) (Soviet Union; Cold War) * 2S4 Tyulpan self-propelled 240mm mortar (also known as M1975) (Soviet Union; Cold War) * 2S5 Giatsint-S self-propelled 152mm howitzer (also known ... [...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 was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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