What is the difference between automatic and manual air conditioning in cars?

[DeJosiah]

Introduction to the differences between automatic and manual air conditioning is as follows: 1. Automatic air conditioning is more intelligent and convenient to use than manual air conditioning. Manual air conditioning can only adjust the air volume and cooling/heating, and the air conditioning will keep working. When you feel too cold or too hot, you can only manually adjust it repeatedly, which is very inconvenient. In contrast, automatic air conditioning allows you to set a temperature. There is a temperature sensor in the car. When the interior temperature reaches the set temperature, the air conditioning will automatically stop working. It will restart when the temperature changes, eliminating the need for manual operation. Therefore, automatic air conditioning is more time-saving and labor-saving than manual air conditioning. 2. Automatic air conditioning has more advanced dual-zone independent air conditioning, which allows you to set the temperature for the driver and passenger areas separately. This parameter is not important when buying an economical car under 100,000 yuan, but it is very important in high-end cars. In high-end cars, even the rear seats can independently adjust the temperature. The difference in fuel consumption is minimal, and the work efficiency is comparable. The distinction lies only in the temperature control system. 3. Automatic air conditioning is more fuel-efficient and economical because manual air conditioning requires adjustment only when people feel cold, whereas automatic air conditioning stops working once the set temperature is reached. From this perspective, automatic air conditioning is more fuel-efficient and economical. 4. In terms of working principles, automatic air conditioning is more complex. The automatic working principle involves the air conditioning control panel receiving signals from various sensors (such as outdoor temperature sensors, indoor temperature sensors, sunlight sensors, evaporator temperature sensors, etc.) as well as signals like engine load and water temperature from the engine control unit. It automatically controls the air conditioning system's operation, including compressor operation, interior temperature control, fan speed control, air conditioning internal/external circulation control, and air outlet mode control.