After air conditioning, the engine will drive the air conditioning compressor, and the engine load will increase.
The starting of air conditioner condenser fan, air conditioner blower fan, compressor electromagnetic clutch and other components increases the load of the generator, so it is necessary to increase the output power of the generator, and then the running resistance of the generator will also increase. The last increase is the load of the engine.
After turning on the air conditioner, the power is insufficient, so it is necessary to step on a heavier throttle, or drive at a low gear, or increase the engine load.
The air conditioner condenser is located in front of the engine radiator and next to them. When the condenser works, the temperature can reach 60-70 degrees Celsius, which is equivalent to adding extra heat to the radiator and reducing its heat dissipation ability.
Coolant circulation fault
Coolant must be circulated to take away the heat from the engine and give it away. If the coolant circulation is not good, it will also lead to insufficient heat dissipation and high temperature. The reasons that affect the coolant circulation failure are as follows:
Pump failure
The water pump is the power source of coolant circulation. Without a water pump, it is difficult for coolant to circulate and dissipate heat by itself. Common faults include damaged water pump blades and loose water pump spindle. The most obvious performance after the pump is broken is that there is no warm air.
There is air in the cooling system.
There is air in the cooling system, which will lead to poor circulation or even abnormal circulation of coolant. At this time, it is necessary to open the exhaust screw to try to exhaust.