The life of the motorcycle engine cylinder depends on these details!
The service life of a motorcycle is calculated by the overhaul mileage of the motorcycle. The main sign of overhaul mileage is the amount of wear and crankshaft wear in the cylinder bore, of which the wear amount of cylinder diameter is the most important. When the cylinder diameter is worn, the gap between the piston and the cylinder inner wall increases, causing a knock-on sound and a leak between the piston and the cylinder inner wall. At this time, the fuel consumption of motorcycles rose sharply, sewage increased significantly, mechanical efficiency and power fell sharply, must be overhauled. The main item of overhaul is the cylinder, the piston change, restore the piston and cylinder wall between the normal cylinder gap. The cylinder gap of domestic motorcycle is generally 0.03 to 0.06mm (refers to the gap between the piston skirt and the cylinder block), and the cylinder gap of foreign high-performance engines can be as small as 0.015 to 0.025mm.
Thus, the wear of cylinder diameter directly determines the life of motorcycle and overhaul period. Owners want their motorcycles to last longer and the better. The overhaul mileage of genuine domestic motorcycles is generally 50000 to 100,000km, and the foreign high-performance motorcycle is 100,000 to 150,000km. Use reasonable to reach the upper limit, the use of unreasonable lower limit may not reach; fake and inferior motorcycles may run 10000km, some even can only maintain 6000km warranty period, once beyond the warranty period, the owner has to pay for their own overhaul or replacement of new cylinders, resulting in undue economic losses. Needless to say, how to extend the service life of the cylinder has a very important practical significance, it is related to the vital interests of each owner.
Therefore, it is necessary to introduce some appropriate measures to avoid borewear as far as possible, extend their service life.
First, the purchase of brand name or genuine car is the key One of the main reasons for the service life of high-performance engines of up to 100,000 to 150,000km is the plated layer of high-performance ceramic composites on the inner walls of cylinders. In recent years, China's Everest company and Chongqing Huawei have also begun to apply the cylinder ceramic coating technology. For example, Huawei's "Golden Pottery Technology" is the use of chemical vapor deposition technology, in the cylinder wall deposit a layer of Ni-SiC composite ceramic film, penetration into the cylinder wall of the ceramic particle diameter of only 0.3 m, structural density, surface roughness accuracy, friction coefficient is only 0.06 to 0.082. The coating has high temperature resistance, corrosion resistance, self-lubrication, high strength, high wear and other comprehensive properties. Tested, the cylinder in 200000km wear amount of less than 0.10mm, the cylinder gap can be reduced to 0.015 to 0.025mm, without fear of bloating, pulling cylinder steam and leakage, to reach the international advanced level.
Motorcycle enthusiasts can choose to buy such a cylinder car is the most ideal.
Second, the new car to go through a good run-in At the time of the motorcycle factory, the factory requires the user to carry out a new car run-in period, which is generally between 1500 and 2500km. In order to ensure the quality of the run-in, some factories in the motorcycle carburetor pipe with speed limit pipe, so that the speed of the new car than the normal use of the speed of a lower speed. During the run-in period, the user must not remove the speed limit pipe at will, strictly prohibit high-speed or low-speed driving, preferably not carrying people, as far as possible to avoid driving on the uneven bad road surface, so as not to bear a larger load.
For two-stroke motorcycles using mixed oil, the mixing ratio of gasoline to lubricant should be increased to about 20:1 so that it is conducive to the grinding of the surface of the cylinder block.
Third, the surface of the cylinder block should have good lubrication The piston movement of modern motorcycle engines is so high that even if it is lost in a short period of time, it can cause severe wear and even damage to the inner surface of the cylinder. To avoid dry friction, it is important to ensure that the engine is in good lubrication when running.
On the one hand, always check the oil pressure and the oil ruler, avoid the use of motorcycles in the absence of lubricants, on the other hand, it should be noted that the lubricant should have the appropriate viscosity, so that it can adhere well to the cylinder block and piston surface, in order to form liquid friction.
Four, into the cylinder air to clean Air entering the cylinder from the air filter, if it contains more dust or tiny particles of sand, will increase the wear on the surface of the cylinder as quickly as abrasives, so be sure to make the air entering the cylinder very clean. On the one hand, remove dust from the air filter on a regular basis (approximately 1000km) and replace the filter if necessary, and on the other hand, check the sealing at the joints of the air filter regularly (approximately 1000km) to avoid unfiltered air from entering the cylinder. In order to improve the filter effect, the paper hollow filter can add a thin foam sponge outside the filter element, foam sponge must be washed with water once a day, so as not to block. With high temperature, corrosion resistance, self-lubrication, high strength, high wear and other comprehensive performance. Tested, the cylinder in 200000km wear amount of less than 0.10mm, the cylinder gap can be reduced to 0.015 to 0.025mm, without fear of bloating, pulling cylinder steam and leakage, to reach the international advanced level. Motorcycle enthusiasts can choose to buy such a cylinder car is the most ideal.