Automatic Transmission Cars: How Stuff Works
Automatic transmission cars are a popular choice for drivers who want an easier and more convenient driving experience. But how do they actually work? In this article, we’ll take a closer look at the inner workings of automatic transmissions and explain the different types of automatic transmissions available.
How Automatic Transmissions Work
Automatic transmissions use a series of gears and clutches to change gears automatically, based on the speed of the car and the driver’s input. The gears are arranged in a planetary gearset, which is a type of gear system that uses multiple gears to create different gear ratios. The clutches are used to engage and disengage the different gears.
When the driver shifts the car into drive, the transmission computer selects the appropriate gear ratio based on the car’s speed and the driver’s input. The computer then uses the clutches to engage the appropriate gears and disengage the other gears.
The transmission computer also uses a variety of sensors to monitor the car’s speed, engine speed, and throttle position. This information is used to adjust the gear ratio and shift points as needed.
Types of Automatic Transmissions
There are two main types of automatic transmissions: conventional automatic transmissions and continuously variable transmissions (CVTs).
Conventional Automatic Transmissions
Conventional automatic transmissions use a set number of gears, typically four to six gears. The gears are arranged in a planetary gearset, and the clutches are used to engage and disengage the different gears.
Conventional automatic transmissions are relatively simple and reliable, but they are not as efficient as CVTs.
Continuously Variable Transmissions (CVTs)
CVTs use a different type of gear system that allows for an infinite number of gear ratios. This means that CVTs can always find the optimal gear ratio for the car’s speed and the driver’s input.
CVTs are more efficient than conventional automatic transmissions, but they can be more expensive and less reliable.
Advantages and Disadvantages of Automatic Transmissions
There are several advantages to driving an automatic transmission car:
- Easier to drive: Automatic transmissions make it easier to drive, especially in stop-and-go traffic.
- More convenient: Automatic transmissions allow the driver to focus on driving without having to worry about shifting gears.
- More efficient: CVTs are more efficient than conventional automatic transmissions.
However, there are also some disadvantages to driving an automatic transmission car:
- Less engaging: Automatic transmissions can be less engaging to drive than manual transmissions.
- More expensive: Automatic transmissions can be more expensive than manual transmissions.
- Less reliable: CVTs can be less reliable than conventional automatic transmissions.
Conclusion
Automatic transmission cars offer a number of advantages over manual transmission cars, including easier driving, more convenience, and improved efficiency. However, automatic transmissions can also be more expensive and less reliable than manual transmissions.
Ultimately, the best type of transmission for you will depend on your individual needs and preferences.
