Why does the engine sound particularly loud when the air conditioner is on in summer?

[StMaria]

When the air conditioner is on in summer, the engine sound may become particularly loud, likely due to a malfunction in the compressor or pulley. Below is relevant information about car air conditioning: 1. Function: It is used to adjust and control the temperature, humidity, air cleanliness, and airflow inside the car cabin to an optimal state, providing a comfortable riding environment for passengers and reducing travel fatigue; it also creates favorable working conditions for the driver, playing a crucial role in ensuring safe driving as a ventilation device. 2. Classification: Generally includes refrigeration devices, heating devices, and ventilation devices. This combined system makes full use of the limited space inside the car, featuring a simple structure and ease of operation, making it a popular modern car air conditioning system internationally.