1. Choose the right engine oil
When choosing engine oil, car owners should know the ambient temperature of the vehicle, and then purchase engine oil according to the oil quality requirements and required viscosity. in the vehicle manual. Carefully check the quality and viscosity labels on the oil packaging and choose a motor oil that meets the minimum and higher requirements. For example, in Sichuan, you can use engine oil meeting the multigrade viscosity standard SAE15W-40 under normal circumstances throughout the year.
2. Remember to pack the oil when changing
The vehicle must undergo routine maintenance and replace the engine oil and three filters every certain kilometers driven. However, each drain is based on one barrel. Usually there will be a little left after draining. Don’t forget to pack any leftover oil and put it awaytake away for later use. This way, when it turns out that the oil and fluid levels have dropped after one or two months and need to be replenished, the car owner can also use the oil accumulated during several maintenance operations to “flush” the engine before a certain oil level. change to make the oil change more thorough
3. Do not mix engine oils
Sometimes you find that your car's engine oil level is insufficient and you need to add engine oil. At this point, you should be careful not to add different brands or types of engine oil. Different brands of petroleum products use different additives, and mixing them can cause the oil to deteriorate.
Detailed information:
Whenthe external circuit feeds the excitation winding through the brush, a magnetic field is generated, causing the claw pole to be magnetized into N pole and S pole. When the rotor rotates, the magnetic flux changes alternately in the winding of the stator. According to the principle of electromagnetic induction, it can be seen that an alternating induced electromotive force is generated in the three-phase winding of the stator. This is how an alternator produces electricity.
The main motor (i.e. motor) drives the rotor of the synchronous generator excited by direct current to rotate at a speed n (rpm), and the stator winding three-phase induces an alternating potential. If the stator winding is connected to an electrical load, the motor will produce alternating current. The alternating current will be converted to direct current through the bridge rectifier inside the generator and output from the output terminal.
The alternator is dividedinto two parts: the stator winding and the rotor winding. The three-phase stator winding is distributed across the housing at an electrical angle difference of 120 degrees to each other. is composed of two polar claws. When the rotor winding is connected to direct current, it is excited and the two pole claws form the N pole and the S pole. The magnetic lines of force start from the N pole, enter the stator core through the air gap , then return to the adjacent S pole.
Once the rotor turns, the rotor windings intersect the magnetic lines of force, generating a sinusoidal electromotive force in the stator windings with a difference of 120 electrical degrees from each other, c that is to say three-phase alternating current. , then converted into direct current output through the rectifier element composed of diodes.
However, after starting the engine, as the speed of thegenerator increases, the voltage across the generator also continues to increase. When the generator output voltage is equal to the battery voltage, the potentials of the generator terminals “B” and “D” are equal. At this time, the charging indicator light is on. The potential difference between the two ends is zero and turns off.
Indicates that the generator is operating normally and that the excitation current is provided by the generator itself. The three-phase AC electromotive force generated by the three-phase windings of the generator is rectified by the diode, and then produces DC power to power the load and charge the battery.
People's Daily Online - Basic knowledge on how to maintain and maintain automobile engines - engine oil
There is many reasons:
1. Cooling water inlet pressure is low. Check the water line and water pump.
2. ThereOil inlet pressure is low. Check the oil line and oil pump.
3. no fluctuation will usually occur, but may need to be checked
4. Internal mechanical problems, such as lack of bearing lubrication and internal locking
________________________
What can you tell if the machine is burned out? It certainly won't work. It should be disassembled and inspected.
By the way, if there is a lack of water or the oil temperature exceeds about 60°C. degrees, the machine should stop automatically, so there is a problem with the generator's automatic protection circuit. Not only does it need to be repaired, but the machine body and the protection circuit attached to it also need to be inspected and repaired.