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Automatic Transmission
An automatic transmission (AT) or automatic gearbox is a multi-speed transmission (mechanics), transmission used in motor vehicles that does not require any input from the driver to change forward gears under normal driving conditions. The 1904 Sturtevant "horseless carriage gearbox" is often considered to be the first true automatic transmission. The first mass-produced automatic transmission is the General Motors ''Hydramatic'' two-speed hydraulic automatic, which was introduced in 1939. Automatic transmissions are especially prevalent in vehicular drivetrains, particularly those subject to intense mechanical acceleration and frequent idle/transient operating conditions; commonly commercial/passenger/utility vehicles, such as buses and waste collection vehicles. Prevalence Vehicles with internal combustion engines, unlike electric vehicles, require the engine to operate in a narrow range of rates of rotation, requiring a gearbox, operated manually or automatically, to drive t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Automatic Transmission Cut
Automatic may refer to: Music Bands * Automatic (Australian band), Australian rock band * Automatic (American band), American rock band * The Automatic, a Welsh alternative rock band Albums * Automatic (Jack Bruce album), ''Automatic'' (Jack Bruce album), a 1983 electronic rock album * Automatic (Sharpe & Numan album), ''Automatic'' (Sharpe & Numan album), a 1989 synthpop album * Automatic (The Jesus and Mary Chain album), ''Automatic'' (The Jesus and Mary Chain album), a 1989 alternative rock album * Automatic (Dweezil Zappa album), ''Automatic'' (Dweezil Zappa album), a 2000 hard rock album, or the title song * Automatic (Stitches album), ''Automatic'' (Stitches album), a 2006 punk rock album, or the title song * Automatic (VNV Nation album), ''Automatic'' (VNV Nation album), a 2011 futurepop album * Automatic (Don Broco album), ''Automatic'' (Don Broco album), a 2015 rock album * Automatic (Kaskade album), ''Automatic'' (Kaskade album), 2015 album by Kaskade * Automatic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Servomechanism
In mechanical and control engineering, a servomechanism (also called servo system, or simply servo) is a control system for the position and its time derivatives, such as velocity, of a mechanical system. It often includes a servomotor, and uses closed-loop control to reduce steady-state error and improve dynamic response. In closed-loop control, error-sensing negative feedback is used to correct the action of the mechanism. In displacement-controlled applications, it usually includes a built-in encoder or other position feedback mechanism to ensure the output is achieving the desired effect. Following a specified motion trajectory is called servoing, where "servo" is used as a verb. The ''servo'' prefix originates from the Latin word ''servus'' meaning slave. The term correctly applies only to systems where the feedback or error-correction signals help control mechanical position, speed, attitude or any other measurable variables. For example, an automotive power win ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oldsmobile
Oldsmobile (formally the Oldsmobile Division of General Motors) was a brand of American automobiles, produced for most of its existence by General Motors. Originally established as "Olds Motor Vehicle Company" by Ransom E. Olds in 1897, it produced over 35 million vehicles, including at least 14 million built at its Lansing, Michigan, factory alone. During its time as a division of General Motors, Oldsmobile slotted into the middle of GM's five passenger car divisions (above Chevrolet and Pontiac (automobile), Pontiac, but below Buick and Cadillac). It was also noted for several groundbreaking technologies and designs. Oldsmobile's sales peaked at over one million annually from 1983 to 1986, but by the 1990s the division faced growing competition from premium import brands, and sales steadily declined. When it shut down in 2004, Oldsmobile was the oldest surviving American automobile brand, and one of the oldest in the world. History Early history Oldsmobiles were first manufac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
REO Motor Car Company
The REO Motor Car Company (''REO'' pronounced , not letter by letter) was a company based in Lansing, Michigan, which produced automobiles and trucks from 1905 to 1975. At one point, the company also manufactured buses on its truck platforms. Ransom E. Olds was an entrepreneur who founded multiple companies in the automobile industry. In 1897 Olds founded Oldsmobile. In 1905 Olds left Oldsmobile and established a new company, REO Motor Car Company, in Lansing, Michigan. Olds had 52% of the stock and the titles of president and general manager. To ensure a reliable supply of parts, he organized a number of subsidiary firms, like the National Coil Company, the Michigan Screw Company, and the Atlas Drop Forge Company. Originally the company was to be called "R. E. Olds Motor Car Company", but the owner of Olds' previous company, then called Olds Motor Works, objected and threatened legal action on the grounds of likely confusion of names by consumers. Olds then changed the name t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Preselector Gearbox
A preselector gearbox is a type of manual transmission mostly used on passenger cars and racing cars in the 1930s, in buses from 1940–1960 and in armoured vehicles from the 1930s to the 1970s. The defining characteristic of a preselector gearbox is that the gear shift lever allowed the driver to "pre-select" the next gear, usually with the transmission remaining in the current gear until the driver pressed the "gear change pedal" at the desired time. The design removed the need for the driver to master the timing of using a clutch pedal and shift lever in order to achieve a smooth shift in a non-synchromesh manual transmission. Most pre-selector transmissions avoid a driver-controlled clutch entirely. Some use one solely for starting from a standstill. Preselector gearboxes were most common prior to the widespread adoption of the automatic transmission, so they were considered in comparison to the " crash gearbox" type of manual transmission. Preselector gearboxes were often m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydraulic Fluid
A hydraulic fluid or hydraulic liquid is the medium by which power is transferred in hydraulic machinery. Common hydraulic fluids are based on mineral oil or water. Examples of equipment that might use hydraulic fluids are excavators and backhoes, hydraulic brakes, power steering systems, automatic transmissions, garbage trucks, aircraft flight control systems, lifts, and industrial machinery. Hydraulic systems like the ones mentioned above will work most efficiently if the hydraulic fluid used has zero compressibility. Functions and properties The primary function of a hydraulic fluid is to convey power. In use, however, there are other important functions of hydraulic fluid such as protection of the hydraulic machine components. The table below lists the major functions of a hydraulic fluid and the properties of a fluid that affect its ability to perform that function: Composition Base stock The original hydraulics fluid, dating back to the time of ancient Egyp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Compressed Air
Compressed air is air kept under a pressure that is greater than atmospheric pressure. Compressed air in vehicle tires and shock absorbers are commonly used for improved traction and reduced vibration. Compressed air is an important medium for the transfer of energy in industrial processes and is used for power tools such as air hammer (fabrication), air hammers, Jackhammer, drills, power wrench, wrenches, and others, as well as to atomize paint, to operate air cylinders for automation, and can also be used to propel vehicles. Brakes applied by compressed air made large railway trains safer and more efficient to operate. Compressed air brakes are also found on large highway vehicles. Compressed air is used as a breathing gas by underwater diving, underwater divers. The diver may carry it in a high-pressure diving cylinder, or surface supplied diving, supplied from the surface at lower pressure through an air line or diver's umbilical. Similar arrangements are used in breathing ap ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ford Model T
The Ford Model T is an automobile that was produced by the Ford Motor Company from October 1, 1908, to May 26, 1927. It is generally regarded as the first mass-affordable automobile, which made car travel available to middle-class Americans. The relatively low price was partly the result of Ford's efficient fabrication, including assembly line production instead of individual handcrafting. The savings from mass production allowed the price to decline from $780 in 1910 () to $290 in 1924 ($ in dollars). It was mainly designed by three engineers, Joseph A. Galamb (the main engineer), Eugene Farkas, and Childe Harold Wills. The Model T was colloquially known as the "Tin Lizzie". The Ford Model T was named the most influential car of the 20th century in the 1999 Car of the Century competition, ahead of the Mini, BMC Mini, Citroën DS, and Volkswagen Beetle. Ford's Model T was successful not only because it provided inexpensive transportation on a massive scale, but also becaus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wilson-Pilcher
Wilson-Pilcher was an English car company founded in 1901 and acquired by Sir WG Taken Armstrong Whitworth & Co., Limited in 1904. History The company ''Wilson-Pilcher'' was founded in 1901 by Walter Gordon Wilson in London to produce automobiles. In 1904 it was acquired by Sir WG Taken Armstrong Whitworth & Co., Limited and production moved to Newcastle upon Tyne. Percy Pilcher had died in a gliding accident in 1899, and Wilson had been working with him on the engine for an attempt at powered flight. According to Bonhams there is photographic evidence of a wooden mock-up of the car in 1899, and a photo of a working car taken at Stanhope Hall in 1900. Production stopped in 1907. Vehicles The first model had a 9 hp four cylinder flat engine of 2400 cc displacement. In 1903 this was replaced by the 12/16 hp engine of 2694 cc capacity. In 1904 a six-cylinder 18/24 HP engine of 4041 cc capacity was added to the range. In April 1904 The ''Automotor Journal'' gave a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Throttle
A throttle is a mechanism by which fluid flow is managed by construction or obstruction. An engine's power can be increased or decreased by the restriction of inlet gases (by the use of a throttle), but usually decreased. The term ''throttle'' has come to refer, informally, to any mechanism by which the power or speed of an engine is regulated, such as a car's accelerator pedal. What is often termed a ''throttle'' (in an aviation context) is also called a thrust lever, particularly for jet engine powered aircraft. For a steam locomotive, the valve which controls the steam is known as the regulator. Internal combustion engines In an internal combustion engine, the throttle is a means of controlling an engine's power by regulating the amount of fuel or air entering the engine. In a motor vehicle the control used by the driver to regulate power is sometimes called the throttle, accelerator, or gas pedal. For a gasoline engine, the throttle most commonly regulates the amount of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Engine Control Unit
An engine control unit (ECU), also called an engine control module (ECM), is a device that controls various subsystems of an internal combustion engine. Systems commonly controlled by an ECU include the fuel injection and ignition systems. The earliest ECUs (used by aircraft engines in the late 1930s) were mechanical-hydraulic units; however, most 21st-century ECUs operate using digital electronics. Functions The main functions of the ECU are typically: * Fuel injection system * Ignition system * Idle speed control (typically either via an idle air control valve or the electronic throttle system) * Variable valve timing and/or variable valve lift systems The sensors used by the ECU include: * accelerator pedal position sensor * camshaft position sensor * coolant temperature sensor * crankshaft position sensor * knock sensors * inlet manifold pressure sensor ( MAP sensor) * intake air temperature * intake air mass flow rate sensor ( MAF sensor) * oxygen (lambda) s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
