Automotive transmission technologies Automotive transmission technologies Advanced Hybrid System 2 (AHS2) is a set of hybrid vehicle technologies jointly developed by General Motors and DaimlerChrysler. It uses two sets of gears in an automatic transmission: One for the internal combustion engine and another to multiply the power of a pair of electric motors. General Motors has stopped using the "AHS2" name as of 2006, preferring to call it simply a "two-mode hybrid system". ...more on Wikipedia about "Advanced Hybrid System 2"
An automatic transmission is an automobile gearbox that can change gear ratios automatically as the car or truck moves, thus freeing the driver from having to shift gears manually. (Similar but larger devices are also used for railroad locomotives.) ...more on Wikipedia about "Automatic transmission"
Belts are used to mechanically link two or more rotating items. They may be used as a source of motion, to transmit power between two points, or to track relative movement. ...more on Wikipedia about "Belt (mechanical)"
Chain drive was a popular power transmission system from the earliest days of the automobile. It gained prominence as an alternative to the Systeme Panhard with its rigid Hotchkiss driveshaft and universal joints. ...more on Wikipedia about "Chain drive"
A close-ratio transmission is a transmission in which there is a relatively little difference between the gear ratios of the gears. A close-ratio transmission is designed to allow an engine to remain in a relatively narrow operating speed. Alternately, a wide-ratio transmission requires the engine to operate over a greater speed range, but requires less shifting and allows a wider range of output speeds. Close-ratio transmissions are generally offered in sports cars, in which the engine is tuned for maximum power in a narrow range of operating speeds and the driver can be expected to enjoy shifting often to keep the engine in its power band. ...more on Wikipedia about "Close-ratio transmission"
:For other meanings of the word clutch, see clutch (disambiguation). ...more on Wikipedia about "Clutch"
A continuously variable transmission (CVT) is a type of automatic transmission that can change the " gear ratio" (gears are not generally involved) to any arbitrary setting within the limits. The CVT is not constrained to a small number of gear ratios, such as the 4 to 6 forward ratios in typical automotive transmissions. ...more on Wikipedia about "Continuously variable transmission" http://www.shortopedia.com, just the best.
In an automobile and other wheeled vehicles, a differential is a device, usually consisting of gears, for supplying equal torque to the driving wheels, even as they rotate at different speeds. ...more on Wikipedia about "Differential (mechanics)"
The Direct-Shift Gearbox (Direktschaltgetriebe) is a semi-automatic transmission invented by BorgWarner and initially licenced to Volkswagen (which also owns the Audi, Seat, Bentley and Skoda brands). By using two clutches, fast shifts can be achieved, and the inefficient torque converter of a regular automatic transmission is eliminated. ...more on Wikipedia about "Direct-Shift Gearbox"
A dog leg gearbox is a manual transmission with an unusual shift pattern which forces a "dog leg" (up-over-up) shift between first and second gear. This pattern is named for its resemblance to the hind leg of a dog. ...more on Wikipedia about "Dog leg gearbox"
A Dual-clutch gearbox is a semi-automatic transmission with separate clutches for odd and even gears. Shifts can be accomplished without interupting power by transfering torque between these two clutches. A dual clutch gearbox eliminates the torque converter, which is a major source of parasitic loss in a traditional automatic transmission. This type of gearbox was invented by Andolphe Kégresse just before the outbreak of World War II. ...more on Wikipedia about "Dual-clutch gearbox"
Electrohydraulic manual transmission is a manual transmission system that appears like an automatic transmission to the user. The system automatically changes gear and handles the clutch during gear changes. Many implementations of the system result in jerky gear changes. ...more on Wikipedia about "Electrohydraulic manual transmission"
Epicyclic gearing or planetary gearing is a gear system that consists of one or more outer gears, or planet gears, rotating about a central, or sun gear. Typically, the planet gears are mounted on a movable arm or carrier which itself may rotate relative to the sun gear. Epicyclic gearing systems may also incorporate the use of an outer ring gear or annulus, which meshes with the planet gears. ...more on Wikipedia about "Epicyclic gearing"
A fluid coupling is a sealed chamber containing two toroids in a bath of hydraulic fluid. The driving toroid, called the impeller or turbine, rotates and the motion of its radial chambers imparts a centripetal motion to the hydraulic fluid. The moving fluid reaches the center of the driven toroid (the pump), where Coriolis force reaction transfers the angular momentum outward, applying a twisting force ( torque) to rotate the pump in the same direction as the turbine. The fluid leaving the outer edges of the pump returns to the turbine, where its cycle begins again. ...more on Wikipedia about "Fluid coupling"
In mechanical or automotive engineering, a freewheel is a device in a transmission that disengages the driveshaft from the driven shaft when the driven shaft rotates at a higher rpm than the driveshaft. ...more on Wikipedia about "Freewheel"
The gear ratio is the relationship between the number of teeth on two gears that are meshed or two sprockets connected with a common roller chain, or the circumferences of two pulleys connected with a drive belt. ...more on Wikipedia about "Gear ratio"
Hybrid Synergy Drive (HSD) is a set of hybrid car technologies developed by Toyota and used in that company's Prius, Highlander Hybrid, Camry Hybrid, and Lexus RX 400h automobiles. It combines the characteristics of an electric drive and a continuously variable transmission, using electricity and transistors in place of toothed gears. The Synergy Drive is a drive-by-wire system with no direct mechanical connection between the engine and the engine controls: both the gas pedal and the gearshift lever in an HSD car merely send electrical signals to a control computer. ...more on Wikipedia about "Hybrid Synergy Drive"
A Limited Slip Differential (LSD) is a modified or derived type of differential gear arrangement that allows for some difference in rotational velocity of the output shafts, but does not allow the difference in speed to increase beyond a preset amount. In an automobile, such limited slip differentials are sometimes used in place of a standard differential, where they convey certain dynamic advantages, at the expense of greater complexity. ...more on Wikipedia about "Limited slip differential"
A locking differential or locker is a variation on the standard automotive differential. A locking differential provides increased traction compared to a standard, or "open" differential by disallowing wheel speed differentiation between two wheels on the same axle under certain conditions. ...more on Wikipedia about "Locking differential"
A manual transmission (also known as a stick shift or standard transmission) is a type of transmission used in automotive applications. Manual transmissions often feature a driver-operated clutch and a movable gear selector, although some do not. Most automobile manual transmissions allow the driver to select any gear at any time, but some, such as those commonly mounted on motorcycles and some types of race cars, only allow the driver to select the next-highest or next-lowest gear ratio. This second type of transmission is sometimes called a sequential manual transmission. ...more on Wikipedia about "Manual transmission"
Overdrive can refer to two different things, one of these things is a device, and the other is an idea. An overdrive is a device which was commonly used on rear-wheel drive automobiles to allow the choice of an extra-high overall gear ratio for high speed cruising, thus saving fuel, at the cost of less torque. ...more on Wikipedia about "Overdrive (mechanics)"
This article is made for http://www.shortopedia.com Automotive_transmission_technologies
A parking pawl is a device fitted to a car's automatic transmission that locks up the transmission. It is engaged when the shift selector is placed in the Park position, which is always the first position (topmost on a column shift, frontmost on a floor shift) in all cars sold in the United States since 1965 (when the order was standardised by the SAE) and in most other vehicles worldwide. ...more on Wikipedia about "Parking pawl"
The Powerglide is a two speed automatic transmission designed by General Motors. It was available primarily on Chevrolet automobiles from 1950 through the early 1970s, although a few Pontiac models in the 1950s also used this automatic transmission. ...more on Wikipedia about "Powerglide"
A preselector gearbox is a gearbox used on a variety of vehicles, more commonly until around the 1950s. It was invented by Colonel Walter Gordon Wilson, 1874-1957, and was first used in World War 1 tanks. ...more on Wikipedia about "Preselector gearbox"
Saxomat was a type of automatic clutch available as an option on Saab 93, Volkswagen Beetle, Borgward, DKW, BMW, Opel, NSU and Glas. ...more on Wikipedia about "Saxomat"
This article is licensed under the GNU Free Documentation License.
It uses material from the Wikipedia . Direct links to the original articles are in the text.
If you use exact copy or modified of this article you should preserve above paragraph and put also : It uses material from
the Shortopedia article about "Automotive transmission technologies".
| MAIN PAGE | MAIN INDEX | CONTACT US |