NGK mining machine
NGK
relatively speaking, NGK spark plugs are mainly aimed at Japanese and Korean cars, while Bosch spark plug procts are mainly concentrated in European and American cars. They are also one of the most mainstream consumer spark plug brands in the world, and have the same quality in civil vehicles
NGK uses high alumina ceramic as insulator. It has excellent insulation at high temperature, which can ensure spark. It has excellent thermal conctivity and can prevent excessive combustion. It has strong thermal shock resistance (rapid heating, rapid cooling) and high mechanical strength. Because the insulator is connected with the main metal by special powder, it has excellent air tightness and strong structure
extended data:
precautions:
attention should be paid to align the thread, especially when the spark plug hole is deep, special tools should be used. If the resistance is large, blind force should be avoided to avoid screwing the thread and causing damage. When tightening the spark plug, the tightening torque shall comply with the technical specifications, and do not screw too loose or too tight, so as to avoid air leakage or damage to the spark plug and spark plug hole
the position of the spark plug is concave, so the owner must blow the st off the new spark plug, otherwise the st will fall into the cylinder. A suitable socket wrench should be used to disassemble and assemble the spark plug. When using, the wrench should be placed upright and straight to prevent the part outside the rubber ring of the wrench from touching the tail of the spark plug, resulting in the breakage of the insulating porcelain
The difference between 115CX and 116cx of NGK spark plug flame is as follows:
1. Different jumping performance
because the center electrode of platinum spark plug is smaller, according to the principle of tip discharge, the electrode tip is easier to accumulate more electric energy, and the spark is easier to skip the gap between the two poles. This shows that the engine has a good ignition performance when the engine runs to the normal operating speed
the secondary voltage proced by the ignition coil is low when the gasoline engine is starting and accelerating rapidly. If the platinum spark plug is used, its platinum electrode can still jump out of the stable spark to ensure the starting performance, idling stability and accelerating performance of the gasoline engine
Second, the stability is differentit is easy to stabilize in the best temperature range between self-cleaning combustion and hot combustion. The diameter of discharge electrode of platinum spark plug is 1.0 mm, and the diameter of traditional electrode is 2.5 mm. The area of platinum discharge electrode is 1 / 3 of that of traditional discharge electrode, which can keep the electrode at a high temperature
At the same time, e to the increase of the area of the electrode and insulator skirt, the heat dissipation speed of the skirt is accelerated, and the hot ignition is not easy to occur at the skirt, and the temperature is easy to be controlled between 500 ℃ and 800 ℃. This temperature is the best working temperature for combustion Due to the high energy of electric spark proced by platinum electrode, the spark plug is easy to pass to the mixture, so the spark gap can be smaller than that of general thick electrode. The leakage shunt caused by fouling has little effect on the platinum electrode, which means that the platinum electrode has good fouling resistanceextended data:
characteristics of spark plug
in the standard of spark plug, the calorific value is usually used to characterize the thermal characteristics of spark plug. The calorific value of spark plug represents the balance ability of heat absorption and heat dissipation of the insulator skirt of spark plug, and the higher the calorific value is. Therefore, the calorific value of the hot spark plug is lower and that of the cold spark plug is higher
generally, cold spark plugs with high calorific value are selected for engines with high power and high compression ratio; On the contrary, the engine with low power and low compression ratio chooses the hot spark plug with low calorific value. Generally, the selection of spark plug is determined by the factory through the proct finalization test and should not be replaced at will
1. Add too much oil. When changing the spark plug, many car owners will change the engine oil just at this time. At this time, if you add more oil for various reasons, it will also lead to the phenomenon of higher fuel consumption<
2.
it was not tightened ring replacement. If the spark plug is not tightened according to the specified torque, air leakage will occur. With the continuous and slow leakage of high temperature and high pressure gas, the pressure in the cylinder will become smaller and smaller. At this time, the engine will not only increase fuel consumption, but also be weak, unstable idle speed, easy to stall at high speed, or even unable to start
3. The wrong model of the replaced spark plug, the wrong quality of the proct, or the wrong model, the wrong gap, the wrong calorific value of the spark plug, will also cause the increase of fuel consumption.
the general spark plug problem will lead to poor engine operation, such as difficult start-up, unstable idle speed, poor acceleration, rapid refueling backfire, excessive exhaust gas, increased fuel consumption and other abnormal phenomena. If the carbon deposition is serious enough, the valve will not be closed tightly, and a cylinder will not work completely because of no cylinder pressure, or even the valve will not return to its original position. At this time, the valve and piston will have movement interference, and eventually damage the engine. It can be seen that the influence of carbon deposition on the engine is very huge< (2) the solution
1. Pull out the high-voltage wire connector gently, and do not shake the spark plug insulator ring operation, otherwise the sealing performance of the spark plug will be damaged
2. The engine can be disassembled after cooling down. After loosening the spark plug to be disassembled, use a thin hose to blow out the dirt around the spark plug one by one to prevent the dirt from falling into the combustion chamber after the spark plug is screwed out
3. Around the screw, spark plug electrode and gasket must be kept clean, dry and free of oil stain, otherwise, electric leakage, air leakage, spark weakening and other faults will be caused
4. When installing, align the spark plug with the screw hole with the sleeve, screw it in gently by hand, and screw it to about 1 / 2 of the total length of the thread, and then fasten it with the force lever. If the handle is not smooth when screwing, check whether the screw is aligned or whether there are impurities in the thread. Do not apply force blindly to fasten, so as not to damage the screw hole and damage the cylinder head, especially the aluminum alloy cylinder head
5. It should be tightened according to the required torque, too loose will cause air leakage, too tight will make the gasket lose elasticity, and it will also cause air leakage. It is particularly important to observe the tightening torque of conical seat spark plugs because they do not use gaskets
6. When the carbon and oil deposits on the spark plug are not serious, it can be soaked in gasoline, kerosene or acetone solvent. After the carbon deposits are softened, clean the carbon deposits on the electrode and in the cavity of the ceramic core and shell with non-metallic brush, dry them with compressed air, and do not use knife scraping, sandpaper polishing or dipping in gasoline to prevent damage to the electrode and porcelain insulator. Check the clearance of spark plug after cleaning
III. preventive measures
after completing the above, the installation and test run should be carried out to remind the car owners to do regular maintenance to keep the oil and gas pipelines clean; It is recommended to clean the air grille every 4000-8000km (according to the use and actual situation of the vehicle), clean the throttle valve and clean the burner once; Clean the intake pipe, throttle combustion chamber and relevant oil circuit every 15000-25000km (according to the use and actual situation of the vehicle), check the gasoline grid and replace it as appropriate; Avoid idling for a long time, stopping the engine immediately after driving at high speed, driving at high speed immediately after starting and shifting at low speed.