1. Coolant heating circuit
Coolant for heating enters through the inlet pipe. It passes through the heat exchanger and, after heating, is fed through the outlet pipe into the engine heater circuit.
2. Combustion air supply
The combustion air blower takes in outside air and feeds it through a duct into the combustion chamber.
3. Fuel supply
The fuel metering pump sucks in fuel and delivers it through an internal pipeline to the so-called evaporator.
4. Combustion process
The fuel is mixed with air in the combustion chamber. The resulting air-fuel mixture is ignited by the glow plug. The ignited mixture forms a flame that escapes into the heat exchanger chamber. Here, the thermal energy of the flame is transferred to the walls of the heat exchanger.
5. Exhaust system
Exhaust gases are discharged from the heat exchanger chamber through an exhaust pipe and a separate exhaust system to the outside.
6. Management
The system is switched on and off by the engine control unit via the control unit integrated in the system in accordance with the switching on and off criteria (e.g. coolant temperature). Temperature sensors monitor various temperature parameters in the system, such as flame temperature or coolant temperature, which are then adjusted accordingly by the control unit.
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