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Heater Parts (59)

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Car heaters were first produced in Europe in the 1940s. They are mainly used to warm up the engine in winter and supply car cabs or passenger car cabins. After that, the products quickly spread across the European and North American markets. Compared with Europe and North America, the development of automobile fuel heaters in my country is relatively late. In the early 1960s, Hebei Anji Hongye and Wuhan Body Accessories Research Institute took the lead in production and launched the FJ series of air fuel heaters, and subsequently introduced the YJ and YJP series of fuel heaters based on the digestion and absorption of domestic and foreign technologies. These products are basically It satisfies the heating requirements of domestic passenger cars and other vehicles at that time and occupies most of the market. After entering the 1990s, with the increasingly stringent foreign environmental protection regulations and the improvement of passenger comfort requirements, the air-conditioning technology in the automobile regulations put forward higher requirements for the combustion control, emission control and noise control of the fuel heater. The technical progress of domestic automobile fuel heaters.
The main motor of the heater drives the plunger oil pump, the combustion-supporting fan and the atomizer to rotate. The fuel pump sends the inhaled fuel to the atomizer through the fuel pipeline. The atomizer atomizes the fuel through centrifugal force and mixes it with the air sucked in by the combustion fan in the main combustion chamber. It is ignited by the hot glow plug and fully in the post combustion chamber. After burning, it turns back and transfers the heat to the coolant in the water jacket interlayer through the inner wall of the water jacket and the radiating fins above it. After heating, the medium circulates in the entire pipeline system under the action of a circulating water pump (or thermal convection) to achieve the purpose of heating. The exhaust gas burned by the heater is discharged from the exhaust pipe.
Automotive liquid heater
1. Purpose:
   1. Low temperature start for various vehicle engines.
  2. Provide heat source for windshield defrosting and car interior heating
2. Function:
   heats the circulating medium of the automobile engine-antifreeze, transfers the heat directly to the radiator and defroster in the car, and provides a heat source for low-temperature engine start and interior heating.
   Three, installation
   is connected in series with the circulation system of the engine.
Car air heater
1. Purpose:
   1. Heating the cabs of construction vehicles and heavy-duty trucks. 2. Defrost the windshield.
2. Function:
   Heating the air circulating medium, transfer the heat directly to the car interior, and provide a heat source for windshield glass defrosting and car interior heating.
   Three, installation
  Independent installation will combine the inlet and outlet air with the cabin to form a circulation system.
Use and maintenance
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With the improvement of passenger car comfort requirements, except for a few hot areas, the heating system has become the basic configuration of passenger cars. The correct use and maintenance of the passenger car heating system will not only help extend the service life of the heating system, but also eliminate hidden dangers of insecurity.
Heater use
1. Introduction to the switch panel
Take a fuel heater switch panel for a vehicle as an example, the functions of each switch are as follows:
a. Heater water pump switch: used to turn on or off the water pump in the heating system
b. Heater switch: used to turn the heater on or off
c. Radiator switch: used to turn on or off the fan on the radiator
d. Defroster switch: used to turn on or off the fan on the defroster
2. How to use
a. Press the heater water pump switch to operate the water pump. Using this switch, the waste heat of the engine can be used to heat the interior of the car and defrost the windshield.
b. Press the heater switch, the heater starts to work and automatically ignites.
c. After the heater catches fire, the controller automatically cuts off the glow plug and the heater works normally.
d. The water temperature sensor at the water inlet of the heater automatically controls the constant temperature of the coolant in the circulation system. When the temperature of the water inlet reaches 80℃, extinguish the fire; when the temperature reaches 65℃, re-ignite, and the water pump continues to work.
e. Turn off: turn off the heater switch first, then turn off the water pump switch, not first
Turn off the water pump and then turn off the heater.
Precautions for use
1. Vehicle liquid fuel heaters can only use diesel as fuel. (YJH-Q5B can be used with gasoline, please specify)
2. Before the heater is used, the pipeline valve must be opened to ensure that the liquid in the pipeline can circulate, and at the same time, it must be filled with antifreeze, otherwise the dry grinding of the water pump will generate high temperature and cause damage to the water seal.
3. It is strictly forbidden to use the main power switch of the vehicle to turn off the heater to prevent damage to the main engine from overheating.
4. The coolant medium filled in the circulation system must be an antifreeze to meet the temperature requirements of the vehicle's operating environment and prevent the radiator from rusting and generating scale.
5. When the circulating system is filled with coolant medium, the heater bleed plug (on the heater inlet pipe) and the pipeline bleed valve must be opened first, and there is no gas at the bleed valve, especially the heater bleed plug. When it comes out, close the bleed plug (bleed valve), turn on the water pump switch, and continue filling until the circulating system is full of coolant medium.
6. The voltage of the vehicle battery should not be too low.
Heater maintenance
Vehicle fuel heaters are seasonally used equipment. Corresponding inspections and maintenance should be done before, during, and after shutdown to ensure safe and reliable use. During the secondary maintenance, the following items must be checked and maintained:
1 Liquid heater is not in use season, the heater should be turned on once a month
2 Check the fuel filter and replace if necessary
3 Check the tightness of the water pipe, whether there are bends and interference parts
4 Check the tightness of the fuel line, whether there is oil leakage
5 Check whether the circuit is damaged, whether the connector is loose, and whether the fixing is reliable
6 Check whether the water pump motor is operating normally and whether there is abnormal noise
7 Check the glow plug or ignition generator (ignition electrode) for carbon deposits
8 Check whether each sensor is valid
9 Check the combustion-supporting air and exhaust pipes, and the smoke exhaust is smooth and unblocked
10 Whether the radiator and defroster fan have abnormal noise or card issue
11 Whether the cooling water tank is leaking [1]
12 Ensure that the oil tank, oil pipe and oil filter solenoid valve are clean to prevent dirt from blocking the oil circuit.
Common failure analysis
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1. Nothing happens after booting
a. No power input. Measure whether the heater power supply is normal according to the circuit diagram, and check the vehicle insurance and line power supply. Check the power supply, check the power-on signal wire, and check the ground wire.
b. Thermocouple problem: Phenomenon: Measure both ends of the thermocouple, and the resistance value is 0 ohm. Reason: The two outgoing wires of the thermocouple are connected to the shell, causing the ignition sensor to be grounded.
2. Indicator problem
a. The indicator light is always on. Maybe the control circuit is broken, or the ground wire is not connected.
b. The power-on indicator flashes
The fault location can be judged according to the flashing frequency of the heater indicator light against the fault flash code table, and the corresponding parts can be repaired or replaced.
3. The heater emits black smoke
a. Heater carbon deposits, clean carbon deposits.
b. The fuel injector or filter or the fuel pipe is blocked, clean or replace the corresponding parts.
c. The oil pump pressure becomes smaller, adjust the oil pressure back, and replace the oil pump if necessary.
4. The heater works normally, but fires repeatedly.
a. Reason: When the hot spot couple is heated, the internal furnace wire will be connected to the shell, causing a short circuit of the ignition sensor. The controller considers it to extinguish the fire and the ignition sensor needs to be replaced.
b. If the voltage of the car battery is too low, it will also cause repeated fire fighting; or the fire will be extinguished as soon as it is started.
5. The heating effect is not obvious
It shows that the heater is overheated, and the radiator and defroster are not hot. Reasons: The water return port is too thin; there is gas in the circulating water circuit; the hose is bent; there is foreign matter in the circulating pipe; the water pump is faulty; the water inlet and return valve is not opened, the engine thermostat is opened too early, etc., find out Reason to repair accordingly. [2]
Daily maintenance method
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1. After the heater has been running for a period of time (according to the user's usage), the ignition plug should be unscrewed to clean up the carbon deposits. If the ignition plug is burned out, the ignition plug should be removed and replaced with a new one.
2. If too much carbon deposits cause the thermal efficiency to decrease, clean the radiating fins on the inner wall of the water jacket and the carbon deposits in the combustion chamber.
3. If you find that the heater main engine intake pipe, exhaust pipe and oil drop pipe are blocked by mud, please clean and dredge in time. Please keep the heater compartment clean, and flammable debris is strictly prohibited around it.
4. Ensure that the oil tank, oil pipe and oil filter solenoid valve are clean to prevent dirt from blocking the oil circuit.
5. In the heater circulation system, an antifreeze compatible with the ambient temperature should be used as the circulating heating medium.
6. The heater water pump should be checked regularly according to the user's usage. If the water seal part that plays a role of sealing is found to be leaking, or the water pump is difficult to start and run, it should be repaired in time.
7. The automatic control box, oil filter electromagnetic rice and other electrical components on the heater host are maintained according to the general low-voltage electrical maintenance method. The performance parameters of the automatic control box are carefully debugged by the manufacturer before leaving the factory, and the user should not modify it without authorization.
8. Ensure that the thermal control is in good condition and check it regularly. If the micro switch is found to be malfunctioning or damaged, please replace it in time.
9. The main motor used by the heater does not need to be repaired under normal circumstances. If it is not working properly due to long use time or other reasons, it should be overhauled and the carbon brush wear or bearing lubrication should be checked. It is necessary Please add grease or replace the carbon brushes.

10. When the heater is not in use during the warm season, please start it regularly 4-5 times, and run for about 5 minutes each time to ensure that the heater runs normally the next time it is used.

How should an engine block heater be installed in a car?
The engine block heater can reduce the pressure of the engine in cold weather, and the heater makes it much easier to start a cold engine. In addition, it can improve fuel economy by about 10% in winter.

There are several different types of engine heaters available. Choosing a particular car will depend on the make and model of the car and its mechanical capabilities. The simplest kind of engine heater replaces the oil dipstick. A slightly more complicated type heater connects the radiator hose up.

It can be installed with a screwdriver. The most effective engine block heater replaces the plug at the bottom of the engine block. The general installation instructions are as follows:

Step 1-Select the model

Working on a cold car will protect yourself from burning, but working on a warm engine, if you use a different metal exhaust plug, it is easier to remove than the engine block. Engine heaters at different powers. Choose one that meets your needs and is compatible with the car.

Step 2-drain the engine

Refer to the user manual for device-specific instructions. Remove the bolt clamp that secures the radiator cover and holding the radiator fixing bracket. Slide the pot down the engine and pull out the designated drain plug. This is usually at the back of the body. Remove the radiator cap to accelerate drainage.

Step 3-plug-in heater

The heating rod, if you want to connect between the power cords after the blind. Drop line male end to engine part. Lubricate the holes or rods with grease, but no further than metal clamps. Insert the rod into the hole. If the trapped air presents resistance, if there is more grease.

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The metal clip should face the rear vehicle. It will make a sounding unit when the heater slides in place. Some types must be tightened to the specified torque wrench and one.

Step 4-route the power cord

Insert the rope into the rod. Run the wiring harness through the nacelle and the front grille. Follow the directions or improvise. Avoid moving parts or hoses. Once it reaches the correct position, secure it with a binding wire. Don't leave any ties that slack behind. Want to keep the belt cut off the engine's intake manifold.

Now you have a more fuel-efficient car.

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