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The gearboxes

In vehicles, or gearbox gearbox (usually called just case) is the component designed to engage the engine and transmission with different gear ratios or gear so that it can become crankshaft speed at different speeds on the wheels. The result in the drive wheels usually reducing speed and increasing torque.

Depending on the speed transmitted to the wheels is greater, the force decreases, assuming that the engine delivers constant power, since power is work per unit time and, in turn, work is force times distance, a greater distance (derived from the higher speed) has resulted in a lower strength. In this way allows the gearbox to maintain the engine speed, and therefore the most appropriate power and torque to the speed at which you want to move the vehicle.

The gearbox has a mission to reduce the number of revolutions of the motor and reverse the direction of rotation of the wheels, where progress needs so require. Is coupled to the engine flywheel, which receives motion through the clutch. It is coupled to the transmission system.

Constitution

gearbox

The gearbox consists of a series of gears arranged in three trees.


* shaft. * Tree
intermediate. * Tree
secondary.
* Shaft reverse.


All trees supported, by means of bearings in a housing called sump gearbox, usually cast iron, aluminum or magnesium, and serves as housing for the gears, actuators, and in some cases the differential, as well as container of lubricating oil. Classification

gearboxes

There are several types of gear boxes and various ways of classifying them. So far they had not developed electronic control systems the distinction was much more simple and intuitive as it described its construction and operation. While systems have been developed electronic control box is a paradox that there possibility of manual gearboxes with automated operation (eg Alfa Romeo) and automatic transmissions with manual intervention possible. The classification according to their drive is one of the classifications accepted by most sponsors:

'''manuals or mechanical:'''


mechanical boxes called Traditionally those that are composed of structural elements (frames and controls) and functional (gears, shafts, bearings, etc) mechanical. In this type of gearbox selection of different speeds are performed by mechanical control, although this can be automated. The evidence submitted

to friction, gears, synchronizers, or selectors are lubricated by oil bath-gear-specific housing in isolation from the outside with gaskets to ensure a tight seal.

inside couplings are made by composite mechanisms balancínbalancines guided by bearings and shafts. The operation of the internal mechanisms from outside the box "and should trigger a conductor-are made possible by flexible cables or rigid rods do not stretchable.

The different speeds of consisting the box are synchronized. That is, have mechanisms that allow synchronization match the speeds of the various strands making up the carton during the change from one to another.

The kinematic connection between the motor and gear box is made using the clutch.

Within this group is the automated manual gearbox DSG-Language-Schaltgetriebe alemánalemán Direkt Volkswagen group which allows the manual and automatic.

The automatic gearboxes

This type of gear boxes engranajeepicicloidales traditionally used as a connection between the engine and the box itself using a torque converter clutch instead of the classic, but its mission is the same, connect and disconnect the movement of the motor housing.

The current gearbox application in motor vehicles, as well as automatic management in the selection of the different speeds that characterizes allow the possibility to intervene manually in a similar way as is done in manual gearboxes.

SOURCE: QuimiNet