1. What is the difference between preheating the engine and automatic preheating?

Answer: The condition for preheating the engine is as follows: when the coolant temperature is below 10℃, the preheating plug is automatically heated by the engine controller. When the button is pressed, the heating time is 20 seconds, during which the heating indicator lights up for 8 seconds. After the preheating is completed, when the key is turned on, the engine continues to warm up for 30 seconds.

The conditions for automatic preheating are as follows: when the hydraulic oil temperature drops below 0℃, start the engine, the hydraulic oil temperature sensor sends an electrical signal to the MC, the MC activates the EC electric motor and operates at a set speed of 1250 rpm. The operating time is 15 minutes or until the hydraulic oil temperature reaches the set value. At temperatures above 2℃, automatic preheating is canceled.

2. What is the role of turbocharging and the intercooler?

Answer: The main role of turbocharging is to increase the engine's output power while maintaining the same working volume, improving combustion efficiency, enhancing mechanical efficiency, reducing fuel consumption, improving mixing efficiency, ensuring the air-fuel ratio, reducing harmful gas emissions, enhancing low-speed performance, and matching the engine characteristics that provide high torque at low RPM.

The role of the intercooler is that the temperature of the compressed air drawn in by the turbocharger increases, and the friction between the air and the wall of the intake pipe during movement further heats it, which affects pumping efficiency. The intercooler is similar to a radiator that dissipates heat from the air through the intake. Lowering the temperature can also increase the density of the intake air and further enhance the effective power of the engine.