Reason for the engine pulls the tank and prevention:
An engine zipper means a visible vertical mechanical scratching and scratching of the wall inside the gas tank within the motion of the piston ring, which, in serious cases, causes melting wear and tear, causing engine activation difficulties or failure to self-fire. Pulling a tank is a major engine accident。
The underlying reason for the pull is the difficulty in forming a film between the walls of the cylinder and the piston ring and the piston, resulting in poor lubrication and even dry friction. The specific causes of this situation are many and, in general, three:
Pistol group reason
1. Pistol rings are too small. If the opening, edge or back gap of the piston ring is too small, the piston ring dies when the engine works under a heat-inflated swelling card, presses the cylinder wall very tight or breaks the piston ring, and it is easy to pull a ditch from the piston wall。
2. Pistol sales. As piston-seller springs are not loaded or dropped or broken, the piston is sold in motion and can easily damage the inner walls of the cylinder, causing the cylinder to flow to the arctic box。
Pistols are too small or too large. If the piston is of poor material, the manufacturing size is too different, or if the piston is deformed by the fitting of the piston for sale, the piston is too small to fit with the cylinder, and the piston is stuck in the heat and swelling, thus pulling the piston wall。
4. Pistol rings contain heavy carbon. Overstretching of carbon causes piston rings to bind or bite to death in the ring, while the carbon is a hard grinder that grinds vertical ditches on the walls of the cylinder。
5. Pistols are severely deflated. Due to the bending and distortion of the poles, the parallels of the poles, the main necks, the cosmposts and the dichotomy of the cosmodulars cause the piston to be clearly decorated, which accelerates the wear of the pistons, the pistons and the walls of the cylinders and destroys the formation of the oil film。
Reasons for gas cylinders
1. Circles and cylindrical mass differentials of the cylinders exceeding the permitted limits, which significantly reduce the sealing of the pistons and the cylindrical pellets, drive down the high-temperature gases in the cylinders, damage the oil membrane between the pistons and the walls of the cylinders and, in turn, cause the pull of the cylinders。
2. The gas cylinders produce deformation during assembly. For example, the upper end of the tatter is too large, the tatter is pressured to deform the tatter when installed; the tatter is too thick and the tatter is deformed when pressed into the body。
Reasons for use:
1. Whether the size of the jars used in assembly is incompatible with the jars and pistons。
2. Air filters are not sealed, which render the filter less effective, and the dust, sand and impurities in the air are inhaled into gas cylinders, resulting in grinding. The tests showed that if a few grams of dust were inhaled daily, the wear of the gas cylinder would have increased more than tenfold。
Poor grinding. New machines or overhauled engines have many micro-comforts on the surfaces of parts such as gas cylinders, pistons and pistons, which make it more difficult to create lubricated oil membranes. An accident such as a zipper can easily occur if it is put into a heavy load without a grinding。
4. Frequent cryogenic initiation. When the engine starts at low temperatures, the lubricating oil is very sticky and not liquid and it is difficult to form an effective oil membrane inside the gas tank. According to studies conducted by the department of research, diesel engines have 5 to 7 times as much wear and tear as gas cylinders at normal water temperatures when they work to cool water temperatures below 30°c。
5. Overheating of engines. When the cooling system is poorly maintained or overloaded, excessive mechanical temperatures not only reduce the mechanical strength of the parts but also prevent the formation of lubricated oil membranes on the inner walls of the cylinders. Parts such as pistons, which expand by heat, tend to die in the jars, often as a result of the partial melting of the piston, the inner wall of the piston being pulled out of the engine。
In practical use, tatters are often influenced by a combination of several factors. For example, when non-rigid engine chillers are activated, they become fully operational at full capacity, and they are prone to tattering accidents。
The main prevention measures are:
1. For new machines and overhauled engines, it is essential that they be modulated, i. E., that they be operated from low to high and from small to large, in accordance with the principle of rotational speed, before they can become fully operational。
2. The gap between the piston skirts and the gas cylinders, the opening gap and the margin of the piston ring are correctly selected in accordance with the instructions. In addition, the piston cleavage level should be kept on repair while ensuring the exact size of the gas cylinder。
3. Maintain normal cooling water temperature of 70°c ~ 95°c to avoid overheating engines. Preheating measures should be taken before winter starts。
4. Reasonable use of motors, no overloading, no shelling, no running without water。
5. Strengthen the maintenance of air filters to protect dust from inhalation gas tanks。
6. Maintenance of the lubrication system to prevent mechanical impurities and carbon accumulation from mixing into the oils of the engine, which exacerbates the wear and tear of gas cylinders。
