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In an automobile, the gear system works by allowing the car to travel backward ("reverse gear"), or by changing the ratio between the engine speed and the vehicle speed.
When a smaller gear drives a larger gear, the smaller gear turns faster than the larger gear. So this converts speed into torque. So it is easier for the vehicle to move, through the engine would need to be going fast. When a larger gear drives a smaller gear, the smaller gear turns faster than the larger gear, thus converting torque into speed. If both gears are the same size, then the output speed is the same as the input speed. In a typical 4-5 speed car, there may be 3 gear arrangements where the input gear is smaller than the output one, with less difference in size as the gear number increases. There is also likely an arrangement where they are the same size, and perhaps one where the input gear is larger than the output gear -- that's called overdrive.
In a manual transmission, there is linkage from the gear lever which moves the different gear combinations into place. The gears are at different positions on the same shafts and are slid into the place. The clutch is used to disconnect the engine from the transmission while the driver changes gears. There are also smaller gears called synchronizers that help to allow for differences in the engine speed and the transmission speed.
An automatic transmission is more complex. Instead of a manual clutch, a torque converter is used. That uses Transmission Fluid to couple the engine to the transmission. There is a pump that is used with the valve body to control fluid operated servos that work bands or plates. The valve body is essentially a fluid-based computer. The governor and the modulator valve act as "data" inputs for the valve body. The gears are typically in a planetary, or epicyclic, arrangement. There is a central "sun." There is a ring gear that is a drum that has the teeth on the inside, and there are "planet" gears that connect the sun gear to the ring gear. The planet gears are held by a carrier that turns. There are bands as mentioned above that tighten or loosen over the drums and change the behavior of the arrangement. Some automatic transmissions use a lockup clutch to lock the torque converter at higher speeds to eliminate slippage.
What else can I help you with?
What is a triptronic gear box in automobile vehicles?
Triptronic is a brand name of automatic transmision equiped with a system to give the driver easy manual overide of the gear selection. Initialy available in the Porche line of automobile. It has been surpassed by other technology in the last decade or so.
Main parts of automobile?
The major parts of automobile are as follows: Engine is the main source of power. The power or drive train unit consist of parts that transmit the power from the engine until it finally reaches the wheels. The running gear system consist of accessory units that assist the engine and the power train unit in enabling smooth operation running The body is the compartment where the operator or driver and passenger or car goers are housed. The frame is referred to as skeleton of the automobile where the engine, power train unit, running gear system and body are attached together The chassis unit consist of all parts of the automobile like engine, power train unit, running gear system and frame minus automobile body.
What are the main parts of an automobile?
The major parts of automobile are as follows: Engine is the main source of power. The power or drive train unit consist of parts that transmit the power from the engine until it finally reaches the wheels. The running gear system consist of accessory units that assist the engine and the power train unit in enabling smooth operation The body is the compartment where the operator or driver and passenger or car goers are housed. The frame is referred to as skeleton of the automobile where the engine, power train unit, running gear system and body are attached together The chassis unit consist of all parts of the automobile like engine, power train unit, running gear system and frame minus automobile body.
What type of gear train is used in automatic transmission of an automobile?
epicyclic gear train
How does the car system work?
There are many different systems involved in an automobile, be more specific.
Why do you need gearbox in the automobile?
the need of gear box in automobile is to increase / decrease the speed while u driving the car
Do Sega master system games work on the Sega game gear?
Yes but you need a adaptor called the Gear Master
Working of automobile gear box animation?
i dont know exactly
A system of a automobile?
a styereo
Will imported Japanese Sega game gear games work on a north American game gear system?
Most Japanese titles should work on a North American Game Gear. (Keyword: Most) Source: http://ryangenno.tripod.com/sub_pages/GameGear.htm
What does it mean if the rpm in your automobile does not go over 2?
Transmissions not shifting out of second gear.
What does an automobile starter do?
Besides the smart alec answer "start an automobile", a starter has a small gear, that will both extend as well as rotate when the key is turned. This gear will engage teeth on the flywheel/flexplate, which is bolted to the rear of the crankshaft. As the starter turns, the engine will be turned.
