Failure of diesel engine oil exclude basic method -

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Diesel engine oil exclude the basic method of fault

Blemishes. Piston ring wear depends on the role of positive pressure in the cylinder wall the size, the greater the positive pressure, lubricant film formation and maintenance more difficult, so that increased mechanical wear. With the pressure to the piston downward, increasing the cylinder volume decrease, which resulted in the piston ring on the cylinder wall under the pressure of a big small, so that goes to a large cylinder under wear for the small cone. ② poor lubrication. Engine work, because the cylinder walls are lubricated by Ji Jian, the upper oil supply is more difficult, while the upper part near the cylinder combustion chamber, high temperature in the cylinder wall surface is not easy to form a good film, and even oil may be burned; In the intake stroke when the fuel mixture into the cylinder, the mixture contained a small oil droplets continuously scour the cylinder walls (especially the intake valve side), so that the oil film on the cylinder wall is damaged. ⑧ acid corrosion of materials. Acid corrosion is the cylinder condensation of water vapor into water droplets on the cylinder walls, exhaust gas molecules encountered in the acidic water solution to produce acidic substances (such as sulfuric acid, carbonic acid, etc.), these acids adsorbed on the cylinder wall, corrosive effect on the cylinder wall. When the piston in the cylinder movement, the role of the ring, the metal material is scrape off the corrosion, resulting in corrosion and wear. More severe corrosion, wear and the more experience harm. ④ abrasive effect. Dust in the air, the carbon residue or other impurities in the lubricant, gripping the piston ring and cylinder wall between the piston up and down reciprocating movement in the formation of harmful abrasives. Because the piston movement in the fastest central cylinder, so the role of abrasive grinding on the cylinder wall, and most serious,[link widoczny dla zalogowanych], so that the cylinder wear as a \In addition, the repair of poor quality of materials used, repair of poor quality (such as the cylinder wall roughness exceeds requirements, piston pin hole tilt rod bending and torsion, etc.), will cause the cylinder can cause abnormal wear and tear. The main measures to reduce cylinder wear ① start the engine is cold, you should turn the crank, so that oil reaches the lubrication points. Special attention to the cold car not the engine speed and large load of work. ② For diesel engines, should be preheated before the start of the winter cold; operation, the engine cooling water should be maintained at normal temperature (80qc a 90oC) range. ⑧ strengthen the maintenance and timely clean air filter, air filter driving ban removed. ④ Check the oil regularly the quantity and quality, timely cleaning, replacement oil filter. (To improve the quality of repairs. Estuary f of the unit: 76,329 units) of diesel engine failure is a common oil system failure, and failure in the supply system to block the most common. Therefore, we can rule out that diesel engine oil is the most basic operation failure \Encountered oil blocking failure, apart from all the high-pressure fuel pump at the pipeline, and later hit the starter, observe the valve at the oil situation, which can immediately distinguish between the three kinds of blocking: fizzy is air resistance, not a little oil or oil resistance and foreign ice resistance, normal diesel engine oil and water resistance to fight the choke. If judged as air resistance, you can continue to play starter, has been the gas drained. If the total gas emission is also endless,[link widoczny dla zalogowanych], that is the front-end low pressure pipeline leak, use the method to fight the exhaust pump (to pump rocker example). If you pull the handle, I feel a little light, should be focused on checking the fuel tank from a hand pump the diesel engine oil pipe QICHEYUNYONG exclude the basic method of fault ● Wangshou Dong Liu Xiaobin Zhang Shu make way for leaks. Inspection, should first see whether there are bubbles in the filter, then check pipeline; push the handle if it is, I feel a little light, the focus on supply lines and fuel pump fuel pump check around to see where the oil spill. Place in oil pump oil work is likely to leak. Both the front or the back, the line filter series are in the focus even more difficult because the filter inside the bubble with the fuel away. Measures to eliminate air resistance is: to identify leakage points, good seal, drain system, the air can be. Very complex phenomenon of water resistance,[link widoczny dla zalogowanych], light diesel engine \If the exhaust pipe of continuous white smoke,[link widoczny dla zalogowanych], his hands at all times received from the exhaust port drops, or even more than the exhaust nozzle drip, water resistance, there may exist faults. Measures to eliminate the water resistance is: thoroughly cleaning oil supply system for the fuel with clean water. If judged as foreign body obstruction or ice block, oil pump can be thugs, if you pull the handle,[link widoczny dla zalogowanych], I feel a little weight, should be focused on checking the fuel tank to the pump from this pipe is blocked; If you push the handle, I feel a little heavy, is focused on checking fuel pump The oil pipeline. Exclude foreign body obstruction or resistance measures in the ice supply system is thoroughly cleaned and replace it with clean fuel. Port (Author: 71887 troops and equipment Office) 2009 12 Total No. 206 ■

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