Why does the car lose a lot of power after turning on the air conditioning?

[VanAllison]

When the car's air conditioning is turned on, the air conditioning compressor consumes a portion of the engine's torque during operation. If the engine's output torque is small, the proportion of torque consumed by the air conditioning compressor becomes relatively larger, making the driver feel a lack of acceleration. Below is relevant information: Reasons for the impact: In daily driving, especially at low speeds, the actual power output of small-displacement cars is around 30 kilowatts, so the effect of the car's air conditioning is quite noticeable. However, for larger-displacement models, the impact of the air conditioning may be less noticeable because these engines have more power, and even at low speeds, their power output is stronger. Reason for power reduction: In current passenger car designs, the power for the air conditioning compressor comes directly from the engine, which means the power available for driving the vehicle decreases, resulting in a reduction in power.