How Automatic Transmission Works in Car

Introduction

An automatic transmission is a type of transmission that automatically changes gears as the car moves. This is in contrast to a manual transmission, which requires the driver to shift gears manually.

Automatic transmissions are more popular than manual transmissions in the United States, and they are becoming increasingly popular in other parts of the world. This is because they are easier to drive and they can improve fuel economy.

How an Automatic Transmission Works

An automatic transmission consists of a number of components, including:

• A torque converter
• A planetary gearset
• A hydraulic control unit

The torque converter is a fluid coupling that connects the engine to the transmission. It allows the engine to run at a different speed than the transmission, which is necessary for smooth shifting.

The planetary gearset is a set of gears that are arranged in a planetary configuration. The planetary gearset allows the transmission to change gears without interrupting the flow of power to the wheels.

The hydraulic control unit is a computer that controls the operation of the transmission. It uses sensors to monitor the speed of the engine and the transmission, and it uses this information to determine when to shift gears.

The Different Types of Automatic Transmissions

There are two main types of automatic transmissions:

• Conventional automatic transmissions
• Continuously variable transmissions (CVTs)

Conventional automatic transmissions use a planetary gearset to change gears. CVTs use a different type of gearset that allows for a smooth, uninterrupted transition between gears.

The Advantages of Automatic Transmissions

Automatic transmissions have a number of advantages over manual transmissions, including:

• They are easier to drive.
• They can improve fuel economy.
• They are more reliable.

The Disadvantages of Automatic Transmissions

Automatic transmissions also have some disadvantages, including:

• They are more expensive than manual transmissions.
• They are less efficient than manual transmissions.
• They can be more difficult to repair.

Conclusion

Automatic transmissions are a convenient and efficient way to drive a car. They are easier to drive than manual transmissions, and they can improve fuel economy. However, they are more expensive and less efficient than manual transmissions, and they can be more difficult to repair.