Spark plug function: The spark plug is installed on the side of the engine. The function of the spark plug is to generate an electric arc at the spark plug electrode, and the mixture of air and fuel is lit. It plays an important role in ensuring the performance of the engine. Spark plug structure: By the center electrode, line core, ceramic insulators, conductive glass and other components. The spark plugs circulating in Beijing are divided from the brand: Foreign brands mainly include: Denso, produced by Nippon Denso Co., Ltd., is mainly used in automobiles of Japanese automobiles and major automobile manufacturers in the world, with a market share of nearly 20%; Bosch, Germany's Bosch company, is mainly used in German series cars, with a market share of about 40%; NGK, mainly used in Japanese cars (Nissan, etc.), has a market share of about 20%; Champion, the American champion company, has a market share of about 10%; AC Delco, manufactured by AC Deco, is mainly used in the cars of General Motors Corporation of the United States; Other brands are: Autolite, American Outlet, Eyquem, and France Econ. Others account for about 5% of a total of more than ten species. There are dozens of domestic spark plug brands such as the Zhuzhou Xiang torch and thunderbolt. Most of them are ordinary spark plugs. Car spark plugs from the price points: Ordinary spark plug production cost is generally about 10 yuan each, the market price is generally about 15 40 yuan; platinum spark plug retail price is generally around 60 yuan; double platinum 100 yuan. Iridium alloy spark plugs are generally more than 100 yuan in 50 or 60 yuan. Japan Denso new alloy spark plugs in 120 130 yuan. Select the spark plug to pay attention to the external dimensions: Spark plug dimensions are mainly divided into thread diameter, length, hexagon size, spark plug dimensions, must be consistent with the original thread diameter and length, and sometimes spark plug thread diameter is the same, but the length is not the same. Replace spark plugs should pay attention to the thermal value match: If the calorific value is too low, it will cause deflagration, which will cause ceramic burning on the head of the spark plug. The broken ceramic will fall into the engine and it is dangerous and the electrode is easily soluble. If the calorific value is too high, carbon deposits on the head of the spark plug can easily occur, and electricity can be run. Fire; the heat value of the spark plug represents the speed of heat dissipation. Can be to the business to "heat value interchange table", the same model, different brands of spark plugs have different calorific value. Modified cars should not blindly pursue high calorific value, and the high calorific power will be improved, but the engine will be more harmful. Spark plugs have economic life and limit life: Owners often overlook the replacement time of spark plugs, and believe that they can use or purchase low-cost, low-quality spark plugs. Actually, poor-quality spark plugs have a greater impact on the engine life, overall performance, and fuel consumption. It is understood that the economic life of spark plugs refers to automobiles. The overall performance and fuel consumption are kept at the number of kilometers used by the spark plug when the ignition performance of the spark plug is good; the extreme service life is the number of kilometers when the spark plug is used until it cannot be ignited. How to determine if the spark plug is working properly: 1. The normal spark plug should have a clean surface with brown or yellow and yellowish white. 2. The blackness of the spark plug surface indicates that there is coke or oil contamination, which may be due to the over-concentration of oil and gas mixture, poor power supply system, dirty air Filter, or wrong heating value of the spark plug, which needs to be cleaned or replaced. 3. There are ablation spots on the surface of the spark plug and the color is white-gray, indicating a problem. Improvement of foreign spark plugs in the ignition structure: In order to overcome the traditional spark plug side electrode spark blocking, foreign spark plug manufacturers have tried to modify the traditional side electrode spark plug, such as a V-shaped groove in the center electrode or U-shaped side electrode (such as Japan DENSO spark plug) To increase ignition intensity. If the ignition performance of the spark plug is not good, the engine will not start easily, fatigue, incomplete combustion of oil and gas, high fuel consumption, waste gas, affect the engine life. komatsu injector,caterpillar injector,cummins injector Jining BST Import and Export Co.,Ltd , https://www.komatsucatparts.com
According to statistics, Beijing has about 2.5 million vehicles, and nearly 10 million spark plugs need to be replaced each year. The average retail price of an ordinary spark plug is calculated at RMB 20 and the annual consumption is nearly RMB 200 million.