Transmision Automatica

AUTOMATIC TRANSMISSION

It is a system of change of speeds, or gears, which takes care of itself, the engine speed is changed autonomously, as the name suggests, a measure that the vehicle is going to move.

Gear changes occur, adapt spontaneously, speed, number of revolutions, minute, engine, registration of a series of advantages with respect to a mechanical or traditional transmission, which in many countries: Avoid overheating the Engine Save fuel to carry out the most appropriate gear at all times The driver to have to change the gear manually The minor distraction when driving the vehicle Greater smoothness during the journey In the vehicles that integrate this type of Transmissions, you can see that there is no clutch pedal, and that the shift lever is noticeably different, the quality, instead of presenting the different speeds indicated from 1 to 5 (or more) and the R of "Reverse" or reversing, it comes with the symbols P, R, ND, 2, 1. These symbols are not the speeds but also the engine speed that is used to carry out the most relieved the vehicle in certain s driving moments let's say that, special.

For example, if the vehicle is loaded with a lot of weight or on a long and long slope, it will require a shorter gear regime than if it is empty or flat. That is, once we select the speed regime that we consider most appropriate to our journey, the transmission system will do everything else, changing gear automatically as the speed increases or decreases. With this transmission system the driving becomes very simple, since the driver will only have to worry about stepping on the accelerator or brake according to the circumstances, and the vehicle will automatically make the changes of gears, without jerks or distractions for the driver when having to let go of the steering wheel every time I had to change gears in a conventional vehicle with the manual transmission. Positions of the gear lever in an automatic transmission, most automatic transmissions allow you to manually select the speed or type of gears required by the journey, as well as distinguishing whether you want to have the vehicle stopped, locked, or in reverse.

How does Automatic Transmission work?

The operation of the automatic transmission is hydraulic, uses a fluid coupling or torque converter (replaces the clutch) and a set of epicyclic trains that by means of hydraulic or electronic control actuates brakes and clutches that control the movements of the gears of satellite and planetary type who do each of the marches.

How are the points of change determined?

The automatic transmission bases the selection of the changes on two variables: 
• Position of the accelerator pedal: takes into account the engine load (if it is on a slope, in plane, number of passengers) 
• Vehicle speed: takes into account the speed of the vehicle. 
These variables allow the box to change to higher ratios more slowly and at higher speeds, in the case of a slope. In the oldest boxes, the control of the gears was made hydraulically, through mechanically regulated valves from the decelerator pedal and centrifugally in cases of speed.

Differences between automatic and manual transmission

1. If you want more power in your engine, choosing a manual transmission instead of an automatic transmission will be your best option.

2. If you consider whether saving fuel is one of your priorities then choosing a manual transmission is probably your best option, although it is far from being the only one.

3. Regarding maintenance and repair costs. Most of them need to receive much more maintenance than manual transmissions (some automakers claim that their manual transmissions never need to receive maintenance such as oil change, etc).

4. The basic and most important difference between driving an automatic vehicle and a manual one is that the automatic one does not use the clutch. To drive an automatic vehicle, you just have to put the gearshift lever in one of the speeds (Drive), step on the accelerator and brake to stop the car.

5. The biggest difference in performance between an automatic transmission and a manual transmission is braking with a downhill engine. The mechanical clutch of the manual transmission has the advantage of slowing down the speed of the vehicle. The low gear and the low speed torque converter help the automatic transmission, but they do not allow a 100% clutch.

6. Handling with manual transmission requires making decisions, you have to choose the correct gear to carry out the action. Excessive use of the accelerator causes very severe impact loads on the powertrain (frame, suspensions, engine and box). In a manual car you should get into the habit of letting the powertrain work at your own pace before stepping on the accelerator, if you are not synchronized with the engine you can lose control and if you notice that you are using the clutch you will probably need it change gear to Low Gear.

7. A car with low battery and manual transmission can be started by pushing. With the automatic, no Automatic is heavier, making the car heavier too.

8. In a manual transmission you decide when to make the changes, you get better performance in your car, spend less gas at low speeds therefore your revolutions and your way of driving. Let's say that the manual has the performance at high and low speeds

Advantages and Disadvantages of a manual transmission and an

Automatic

Advantages of a manual transmission

1. The most popular is that it gives the driver a feeling of greater control over the vehicle.

2. Because you do not have the torque converter driving the car constantly in front, it will be easier to get the car to brake.

3. It will be simpler to use the inertia of the motor to decelerate or brake with motor, since you will have more control over the changes.

4. Depending on the conditions of the roads and driving habits of each driver, the fuel consumption will be lower than the existing one with an automatic transmission.

5. Although the clutch is a crucial piece and must be changed every so often, the maintenance cost is several times lower.

Disadvantages of a manual transmission

1. Greater maintenance: when making continuous gear changes, it needs more frequent maintenance. The wear on the internal parts is greater. However, the cost for mechanical damage is lower.

2. Clutch: the coordination between the clutch and the changes is something that some drivers can not control at all. That type of effort and the discomfort of having to operate the gear lever every time it slows down and accelerates, would be the most frequent "in this type of cars. In addition, the clutch components must be replaced every so often by premature wear.

Advantages of automatic transmission

1. It is much easier to learn to drive in an automatic car than in a manual one; We do not believe it is the best option, but it is easier.

2. An automatic transmission allows you to focus a greater percentage of your attention on the road, so your driving may become safer.

3. When not needing so many movements, you will feel that your handling is more comfortable and less tired, especially when there is a lot of traffic.

4. Practical maintenance: despite having a higher cost in maintenance, automatic transmissions can survive a long time with only add transmission fluid occasionally.

Disadvantages of the automatic transmission

1. More expensive: it is said that its approximate price is 10% or US $ 1,000 more than a mechanic. In terms of maintenance and repair it is also, usually, more expensive.

2. Consume a greater amount of fuel.