How the parking heater works.

‌Fuel Combustion System‌

The fuel (diesel/gasoline) is extracted from the fuel tank by the on-board battery-driven oil pump, and then centrifugally atomized by the atomizer, mixed with the air sucked in by the combustion-supporting fan, and ignited by the glow plug. The mixed gas is fully burned in the main combustion chamber and the afterburner, generating high-temperature flue gas (the combustion temperature can reach above 800°C)
‌Heat Transfer Path‌

‌Water Heating Type‌: The combustion chamber is connected to the water jacket interlayer, and the high-temperature flue gas heats the coolant medium. The heated coolant circulates in the engine pipeline through the circulating water pump (or heat convection)
‌Air Heating Type‌: The heat sink on the outer wall of the combustion chamber directly heats the air, and the fan sends the hot air into the cab (without the need for coolant circulation)