What's the reason for the oil-diesel gaskets that are broken, the tank pulled, the oil pressure down
One, the gasket is broken
Symptoms: especially violent noises can be heard when lids are washed out, cooling water in tanks appears in bubbles, oils appear on the surface of the water, vent gas, lubricating oils are diluted, and in severe cases diesel opportunities are extinguished。
Reason: (1) the cylinder covers the nut in an inappropriate order and the pressure is uneven. The combination of the cylinder body and the cap of the cylinder is under pressure, and the combination is not good enough to be sealed. When the pressure is greatest in the cylinder, it may be used as a break-through gas from less compact places, and when the condition is severe, the lid is broken. (2) the caps of the cylinders and the cylinders are in contact with an inverted surface, or there are corrosive pyrotechnics, small pits, which do not hold the casks tight. (3) the cylinders are too low, or are too low, with an uneven pressure on the casks and burning gas coming out of the casks. (4) the operation of diesel engines results in overheating in the tank and the burning of gaskets due to overloading, late movement of oil supplies and poor cooling. (5) the compression ratio is too high, or the oil supply is too early, resulting in excessive pressure in the tank. (6) dismantling of the tatter covers is poorly guarded, disfigured or damaged, and re-assembly without strict inspection. (7) improper use of the cask mats is not flexible。
Treatment measures: (1) once the tatter covers have been washed out, they should normally stop and replace the new tatters, but less flexible tatters can be repaired and reused. (2) when overhauling or replacing cylinders, the height of the casks and the thickness of the dental shoulder to the surface of the cask, and the thickness of the hulls, are strictly checked to ensure that the hull shoulder of the casks highlights the altitude of the casks within the prescribed range and that each cask has a distinct height of less than 0. 55 mm. (3) the gaseous high temperature and pressure must be borne by the lids, which are generally made from a copper coating or a stubble steel sheet in the middle of the asbestos plate, with more copper rolls on the edges of the cylinder and the water hole, which are slightly thicker in a free state, which are tightened by bolts, and are pressed harder and sealed better where there are rolls. If the gaskets are not badly damaged and the sides are not washed, they can be used after heating the oil. Care must be taken to point the smooth side towards the cylinder holster when lids are installed. Because if one side of the roll is directed towards the cylinder holster, high temperature, high pressure gases can easily blow through the tatter from the side of the roll, reducing the useful life of the tatter cushion。
2 pull
Symptoms: catalysts, along the piston's motion direction, gutters, impregnated engine ratio, exhaust oil, gas flow through the tank during severe events。
Reason: (1) the gas intake system is not closed or the air filter performance is poor. The dust-containing air enters the cylinder, the larger grain enters the cylinder, squeezes into the gap between the jar and the piston, and when the piston moves back and forth, the jar is pulled out of the deep ditch, i. E. The jar, because of the pelvis. The ingestion system is not tightly closed, mostly at the point where air filters are connected to the inflow bronchial, where the seal cushions are often left unfilled or unconstructed, the connection is not strong and air enters the cylinder without filtering. In addition, welding of air filters, etc., will result in a lack of closure of the gas intake system. (2) the piston ring is broken. Following the break of the piston ring, the piston ring is sharp and the piston is out of control in the pedestal, it is easy to reveal the piston slot in motion, reduce the gap between the pistons and the jars, friction directly with the wall and pull the wall out of the gutter. The piston ring is broken, i. E. When the piston is fully assembled, it is not tight; ii. The piston opening is too small or is too small; and iii. The entourage is wrongly packed in the first concourse. Piston rings are also used to cause the tatters. (3) pistol card spring break. Two thirds of the diameter of the spring wire shall be buried in the ring tank after the piston has been clinked. When the clarinet breaks, the ring is removed and the piston is squeezed into the gap between the piston and the jar, and when the piston moves back and forth, the broken clarinet pulls out of the gutter。
Treatment measures: (1) accelerators caused by a failure of the ingestion system are required to maintain the air filter in a timely manner and the maintenance of the air filter is only allowed without delay. In addition, repairs should be carried out in a timely manner where the inflow is low. (2) a piston-induced piston-cracker is to be replaced. (3) a piston-scrap-scrap-scrap-scrap-scrap-scrap-scrap-scrap-scrap-scrap-scrap-scrap-scrap-scrap-scrap-scrap-scrap-scrap-scrap-scrap-scrap-scrap-s。
3 diesel oil pressure low
The low pressure on diesel oil is reflected in the rapid reduction of the oil pressure to zero following the start-up of the engine, the constant low pressure on oil in the engine's operation, the lighting of oil pressure warnings or the failure to raise the red mark of the oil indicator。
Reason: (1) the loss of spare parts of the oil pump is due mainly to the increased gap between the gear axis and the liner, the increase in the gap between the end of the gear and the end of the pump cover, and the increase in the gap between the top and the inner cavity of the pump shell, resulting in a leak of the oil and a reduction in the pressure of the pump itself. (2) when the gap between bearings is too large, when the gap between the fittings is beyond the limit, the lubricants flow from the unsealed area between the friction surfaces, the oil wedge is not formed and the oil pressure is reduced. In general, the oil pressure can be reduced by 0. 11 mpa for each increase in the gap between bearings. (3) leakage of oil filters. Owing to inappropriate adjustments or tight valves, the oil filtration cores were damaged, resulting in large quantities of oil leaking from the interior back into the shell. In addition, lubricating oils are too low in viscosity or lack of sufficient oil, and the pressure on oils can be reduced by the congestion of oil collectors. (4) the pressure-reducing valve piston slips. A single-cylinder diesel machine, such as s195, s1100, designed to have a main-channel pressure-relief device at the back of the body to keep the main-channel oil pressure within 0. 2 ~ 0. 35 mpa to ensure the reliability of lubricants. When the pressure-relief valve pistons slipped and were stuck in the opening position, the oil entering the main channel went back to the shell and the flow of oil in the main channel was reduced, thus reducing pressure and preventing the red indicator from lifting。
Disposal measures: (1) replacement of engine pumps and maintenance of pump pressure. (2) reducing oil spills and ensuring a normal gap between the necks and the axles to maintain normal oil pressure is key to the lubrication system. (3) ensuring a good working state of the filter. (4) dismantling of pressure-relief valves, cleaning of springs and pistons of pressure-relief devices, identifying and removing the reason for the pistons' slippage. Care is taken not to remove pressure-relief devices easily under normal circumstances to avoid the normal oil pressure on the main channel。
