The car fuel heater, also known as the parking heater system, is an independent auxiliary heating system on the vehicle, which can be used after the engine is turned off, and can also provide auxiliary heating during driving. According to the type of fuel, it can be divided into air gasoline parking heater system and air diesel parking heater system. Most large trucks and construction machinery use diesel gas heating system, and domestic cars mostly use gasoline water heating system.
Whether it is gasoline or diesel, the parking heater has a system to provide auxiliary heating for the car. It’s just that the models they are equipped with are different, and all of them have their own advantages.
The working principle of the parking heating system is to extract a small amount of fuel from the fuel tank to the combustion chamber of the parking heater, and then the fuel is burned in the combustion chamber to generate heat, heat the engine coolant or air, and then dissipate the heat to the cabin through the radiator At the same time, the engine is also warmed up. In this process, the power of the battery and a certain amount of fuel will be consumed. According to the size of the heater, the amount of fuel required for one heating varies from 0.2 liters to 0.3 liters.
The parking heating system is mainly composed of intake air supply system, fuel supply system, ignition system, cooling system and control system. Its working process can be divided into five working steps: intake stage, fuel injection stage, mixing stage, ignition and combustion stage and heat transfer stage.
1. The centrifugal water pump starts pumping test run to check whether the waterway is normal;
2. After the water circuit is normal, the fan motor rotates to blow air in through the intake pipe, and the dosage oil pump pumps oil into the combustion chamber through the input pipe;
3. The ignition plug ignites;
4. After the fire is ignited at the head of the combustion chamber, it burns completely at the tail, and the exhaust gas is discharged through the exhaust pipe:
5. The flame sensor can sense whether the ignition is on according to the temperature of the exhaust gas, and if it is on, the spark plug will be turned off;
6. The heat is absorbed and taken away by the water through the heat exchanger, and circulated to the engine water tank:
7. The water temperature sensor senses the temperature of the water outlet. If it reaches the set temperature, it will shut down or reduce the combustion level:
8. The air controller can control the intake volume of combustion air to ensure the efficiency of combustion;
9. The fan motor can control the speed of the incoming air;
10. The overheat protection sensor can detect that when there is no water or the waterway is blocked and the temperature is higher than 108 degrees, the heater will be automatically turned off.
Post time: Feb-22-2023
