Specializing in the design and manufacture of automotive motor armatures and stators.

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Maintenance methods for starter armature

Release Time:

2023-03-31

   Starter armature It is an important part of the car engine. Its condition reflects the running condition of the car engine. Therefore, detecting whether there is a fault in the starter armature is an important part of car maintenance. There are several methods to detect whether there is a fault in the starter armature:

  1. Check the degree of wear of the armature when the engine starts: Since the starter armature will be worn when the engine starts, the degree of wear of the armature when the engine starts can be checked. If the surface of the armature is found to be excessively worn, it may be a sign of a fault in the armature.

  2. Check the sound emitted when the engine starts: If the engine makes an abnormal sound when it starts, it may be a sign of a fault in the armature. Normally, the engine only makes a slight humming sound when it starts. If it makes other abnormal sounds, it indicates that there may be a problem.

  3. Check for leaks during engine operation: Wear of the starter armature can cause engine oil leakage. Therefore, when the engine is running, check whether the engine is leaking oil. If oil leakage is found, it indicates that there may be a problem.

  The maintenance of the starter armature is an important factor in the running condition of the car engine. Therefore, the starter armature needs to be regularly maintained to ensure its normal operation. The main points of maintaining the starter armature are:

  1. Regularly check the degree of wear of the starter armature: Since the starter armature will be worn when the engine starts, it is necessary to regularly check the degree of wear of the starter armature. If obvious wear is found on the surface of the armature, a new armature can be replaced in time.

  2. Regularly check the level of the engine coolant: Since the level of the engine coolant will affect the normal operation of the starter armature, it is necessary to regularly check the level of the engine coolant to ensure the normal operation of the engine coolant.

  3. Regularly change the engine oil: The quality of the engine oil will directly affect the normal operation of the starter armature. Therefore, it is necessary to regularly change the engine oil to ensure the quality of the engine oil. The correct method is: Before changing the engine oil, professional equipment should be used to extract the engine oil, and then new oil should be replaced. This can ensure the quality of the engine oil.

  The above are the methods for detecting and maintaining the starter armature. Only correct detection and maintenance can ensure the normal operation of the starter armature and thus ensure the normal operation of the car engine.

  To check the starter armature, preparatory work must be carried out first, the necessary tools must be prepared, and the safety of the environment must be ensured. The main tools to be prepared include: pliers, screwdrivers, cleaning towels, etc.

  1. Open the engine hood and check the starter armature; if the armature is found to be loose, it indicates a problem and needs to be tightened.

  2. Check the grounding of the armature to ensure good contact between the armature and the ground wire to ensure current flow.

  3. Check the distance between the armature and the engine bearing to ensure that the distance is appropriate to avoid wear.


Starter armature

09-13

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Methods for winding the armature of a DC brushless automotive motor

The method for winding the armature winding of a DC brushless car motor is to leave a section of the cable end free and tie it tightly to the shaft. Hold the car armature with one hand, and wind the coil inductance clockwise with the other hand. Taking a five-slot armature as an example, the first coil is 1-5, the second coil is 2-6, then 3-7..., and so on. The sides of many components are on the next layer. The 5-9 components have one side on the next layer and the other side on the top layer. The sides of many components are on the top layer. In order to ensure the insulation between the top layer and the next layer components, it is advisable to place 0.1-0.15mm thick insulating paper pads in between. When the coil inductance in the slot reaches a certain level, a crossbar is needed to make it reach the bottom of the slot. When winding the coil inductance, the wire should be tightened first. Whether in the slot or the wire connection part, it is necessary to prevent the occurrence of crossed turns to prevent excessive space occupation and short circuit between turns due to partial stress of the wire. After all the windings are wound, the wire ends of the same winding component are bundled together, then the insulation layer of the wire connector is removed, different color waterproof sleeves are used, and they are embedded in the corresponding commutator segments. The important role of the armature in a DC brushless motor: DC motor,

08-22

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Design rules for automotive armatures

Automotive armature manufacturers indicate that single-layer windings are not suitable for large-capacity motors, and small-capacity motors should not be double-layered. The magnetic flux density of the motor core should not be too high or too low. When the frequency and thickness of the silicon steel sheet core material are constant, the iron loss depends on the magnetic flux density. If the magnetic flux density is too high, the iron loss increases, and the motor efficiency decreases. The increased heat from the iron core increases the motor temperature, and the increased excitation power increases the motor power factor, so the magnetic flux density of the core should not be too high. Try to avoid excessive saturation of the magnetization curve. If the magnetic density is too low, it will increase the amount of motor material used, increasing the cost. The rotor teeth are narrow, the magnetic density is high, the slot entry wire is large, that is, the automotive armature slots are large. Automotive armature manufacturers indicate that due to poor air conduction, there are many gaps in the slots, affecting the coils and easily damaging the heat dissipation of the insulation material, accelerating the increase in motor temperature. The slot fill factor of the motor slots cannot be too high or too low. Usually, the slot fill factor for low-speed motors is 75% to 85%, which can effectively prevent the enamelled wire from loosening in the slots. The design of the motor rotor slot shape should use parallel trapezoidal recesses as much as possible, and the edges of the recesses should not have sharp corners. Try to use a circular bottom recess, because the circular slot is filled with aluminum, which is easy to injection mold and the stator chip is easy to insert. The coil current density should not be...

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