Although the autumnal equinox has passed, most parts of the country are still experiencing high temperatures, with the temperature inside heavy-duty truck cabs remaining particularly high. For truck drivers who spend long hours on the road, the air conditioning system is undoubtedly an essential piece of equipment for improving the driving environment.
However, improper use of air conditioning can not only affect cooling efficiency but also potentially harm vehicle performance and the health of passengers. Below, we will explain in detail the correct way to use heavy-duty truck air conditioning to help drivers avoid common mistakes.
Mistake 1: Turning on the air conditioning immediately after starting the vehicle
Many truck drivers are accustomed to turning on the air conditioning as soon as the engine starts to cool down quickly. This practice actually puts an extra burden on the engine because during a cold start, the engine has not yet reached its optimal operating temperature. Turning on the air conditioning at this time will significantly increase the load, and doing so in the long run will accelerate engine wear.
Correct Operating Suggestions:
1. After starting the vehicle, open all windows and the sunroof to allow natural ventilation to expel accumulated hot air from the vehicle.
2. Turn on the air conditioner in external circulation mode and set the fan to medium speed.
3. After driving for 3-5 minutes until the engine temperature returns to normal, close the windows and turn on internal circulation for cooling.
4. It is recommended to use a sunshade when parking, which can effectively reduce the interior temperature by 5-8℃.
Misconception Two: Using the air conditioner while idling for extended periods
Many truck drivers choose to keep the engine idling to keep the air conditioner running while stuck in traffic or resting.
This practice has three harmful effects: firstly, it increases fuel consumption; secondly, it exacerbates engine carbon buildup; and thirdly, it leads to excessive emissions.
Correct Operating Suggestions:
1. Keep the air conditioner running for short periods of parking.
2. For long periods of parking, it is recommended to turn off the engine and open the windows for ventilation.
3. Consider installing an auxiliary battery to provide power for the air conditioner when parking.
4. Regularly check the engine idling speed to ensure complete combustion.
Myth 3: Setting the Air Conditioner Temperature Too Low
To achieve rapid cooling, some drivers habitually set the temperature to the lowest setting. However, excessively low temperatures not only increase fuel consumption but also negatively impact health.
Correct Temperature Settings:
1. In summer, it is recommended to set the temperature between 24-26℃.
2. Maintain a temperature difference between the inside and outside of the vehicle not exceeding 5-6℃.
3. Adjust the air vents upwards to utilize the principle of cold air sinking for even cooling.
4. For long-distance driving, the temperature can be appropriately increased by 1-2℃ to avoid discomfort.
Myth 4: Long-Term Use of Recirculation Mode
While recirculation mode has high cooling efficiency, it leads to a decrease in air quality and an increase in carbon dioxide concentration inside the vehicle.
Scientific Air Conditioning Methods:
1. Use external air circulation for 2-3 minutes when first starting the air conditioner to expel hot air from the vehicle.
2. Switch to internal air circulation after the cooling has stabilized.
3. Switch to external air circulation for 5 minutes every 30 minutes to refresh the air.
4. Place an activated carbon bag in the air conditioning filter to enhance filtration.
Misconception 5: Long-term use of low fan speed
To reduce noise and fuel consumption, many truck drivers habitually use low fan speed, but this leads to dust accumulation in the air conditioning system.
Recommended Usage:
1. Run the air conditioner at maximum fan speed for at least 10-15 minutes each week.
2. Check the air conditioning filter monthly and clean or replace it promptly.
3. Have the air conditioning system professionally cleaned quarterly.
4. Turn off the AC before parking and keep the fan running to dry the evaporator.
Mastering these air conditioning usage techniques will not only extend the lifespan of your equipment but also create a more comfortable and healthier driving environment for truck drivers. We hope every truck driver will use air conditioning scientifically to make long-distance transportation easier and safer.
