The most common original car spark plugs are nickel alloy spark plugs. These spark plugs are typically used for around 20,000 kilometers and have average performance.
Spark plug life is related to the electrode material, spark plug brand and other factors. Generally, ordinary nickel alloy spark plugs need to be replaced once every 20,000 kilometers, which has the shortest service life. ; platinum alloy spark plugs need to be replaced every 40,000 kilometers; iridium spark plugs can be replaced between 60,000 and 80,000 kilometers and have a long lifespan. But these are just some reference values, and they will depend on the use of the spark plug.
Classification of spark plug material grades
There are roughly alnickel alloy lumage, platinum spark plugs, platinum iridium spark plugs and gold iridium spark plugs. Among these materials, the platinum iridium spark. Spark plugs and iridium gold spark plugs are both good.
In addition to choosing the material of the spark plug, car owners also need to pay attention to the choice of the calorific value of the spark plug. It is best to choose a calorific value that matches that of the original car. Too big or too small. the calorific value will have a certain impact.
If the calorific value is reduced, insufficient combustion of the oil-gas mixture may occur, resulting in insufficient power. Insufficient heat dissipation may even cause the spark plug to become too hot, further causing deflagration and others. phenomena. If the calorific value ofthe spark plug increases, the heat dissipation capacity will be stronger, the temperature of the spark plug will drop faster, and carbon deposits will easily form on the ignition head, causing power failure and preventing the spark plug to light. .
Normal operation mode: including maintenance mode and hydro mode based on load curve and seasonal changes, thermal power mode, maximum and minimum load and maximum and minimum boot mode for longer duration. periods. .
The generator's normal operating mode is grid-connected mode. The generator operates according to the manufacturer's nameplate data, called nominal operating mode. In addition, the special operating modes of the generator include: isolated operation mode with difference, isolated operation mode without difference and le operating mode of the synchronous condenser.
Detailed information:
Maintenance of normal operating mode of the generator:
(1) Due to the structure of the brushless excitation generator, the daily operation and maintenance workload is extremely low. Regular maintenance work of the generator should be carried out according to the regular maintenance work plan of the generator.
(2) The generator slip ring brushes should be inspected every shift. Brushes must not catch fire; make timely adjustments to eliminate small fires that occur during operation when the length of the brushes is less than 1; /3, the brushes need to be replaced. The contact surface of the new brush must be ground with #0 emery cloth to ensure that the contact surfaceis more than 2/3 when a layer of oxide appears on the surface of the brush, grind it with No. 0 emery cloth or wipe it with carbon tetrachloride.
Wear insulated shoes when replacing or servicing brushes during operation. Avoid grounding or short circuits (directly or through non-insulated body parts) when replacing or servicing brushes. Do not touch the positive and negative poles. at the same time, and does not cause damage to the positive pole. Or the negative metal is grounded or grounded through the body to prevent burns when holding the brush.
Before starting the machine, the brushes should be thoroughly cleaned.Inspect, clean, replace, adjust and the excitation system cannot do other work when replacing the brushes during shutdown ; clean the surface of the slip ring with No. 0 emery cloth orcarbon tetrachloride after each stop.
(3) The generator slip ring brushes should be blown regularly with compressed air (Sunday day shift) to keep the brushes and slip rings clean and remove oil stains on the brushes timely. Before using compressed air for cleaning, please note that compressed air must not contain water, otherwise it cannot be used.
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