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柴油发动机排气冒黑烟的故障分析(英文版)

柴油发动机排气冒黑烟的故障分析(英文版)

  The reasons for the failure of the Cummins diesel engine exhaust black smoke

  The smoke in the exhaust fuel incomplete combustion of carbon particles. Therefore, the excess supply of the fuel supply system, fuel, intake air amount reducing the poor sealing of the cylinder block, cylinder head and piston constitute the combustion chamber, injector jet and the poor quality factors will cause the fuel combustion is incomplete, so that the row gas black smoke. Exhaust black smoke for the following reasons:

  A. Uneven pressure fuel supply to the excessive or cylinder fuel supply

  Two. Valve sealing leakage, resulting in leakage, low cylinder compression pressure

  3. Air filter inlet obstruction, resistance of the inlet into the gas

  4. Cylinder, piston, piston rings severe wear

  5 Injector bad work

  6. Engine overload

  7. The fuel injection pump fuel delivery advance angle is too small, the combustion process to the exhaust process

  8. Gasoline fuel injection system control failure failure

  The black smoke of the engine through the high pressure oil pump adjustment, fuel injector spray test to check the cylinder compression pressure measurement, inlet cleaning, fuel supply advance angle adjustment, gasoline fuel injection system failure diagnostic work to be inspected and excluded.

  Cummins diesel engine exhaust white smoke cause of the malfunction

  Of white smoke in the exhaust is not fully atomization and combustion of fuel particles or water vapor, therefore, all lead to fuel atomization can not or will cause water to enter the cylinder exhaust white smoke. Summarized the following main reasons:

  A. Low temperatures and cylinder pressure, fuel atomization is not good, especially the early stages of cold-start exhaust white smoke

  Two. The cylinder head gasket is damaged, the cooling water to seep into the cylinder

  3. The split cylinder, the cooling water to seep into the cylinder

  4. Fuel moisture content and large

  Cold start exhaust white smoke, white smoke disappears after engine warm-up should be considered normal, if still white smoke in the normal operation of vehicles, compared with failure should be observed cooling water within the tank is not the normal consumption of each cylinder is working normal, whether the oil-water separator too much water for inspection and analysis, troubleshooting, parts

  Cummins diesel engine exhaust cause of the failure to take Lanyan

  Blue smoke in the exhaust is mainly the result of excessive oil fleeing into the combustion chamber to participate in the burning. Therefore, any reason will cause the oil fleeing into the combustion chamber exhaust take the blue smoke. Summarized the following main reasons:

  A. Piston ring broken

  Two. Back hole carbon deposits clogging the oil ring, loss of the scraping action of the oil

  3. Piston Ring go together, causing oil from the piston ring opening Upward

  4. Serious or piston ring wear coke catching in the ring slot, loss of sealing effect

  5 Up and down direction of the gas ring installed anti-scraping oil into the cylinder within the burned

  6. Piston ring stretch enough, substandard quality

  7. Improper assembly of the valve guide seals or aging failure, loss of sealing effect

  8. Piston and cylinder badly worn

  Oil by adding excessive oil splash too much, the oil ring too late scraped off the cylinder wall, excess oil

  Exhaust take the blue smoke must be accompanied by the then banner Wei hate beer laugh mast ruffian Wu the  oil consumption increased, some drivers said that "burn oil". Oil, fuel consumption than the average 0.5% to 0.8%, oil consumption

  When this value is exceeded, the exhaust will be blue smoke generated. Engine, usually through the engine to the disintegration of take Lanyan the fault, check to find out why and determine the troubleshooting program. The status of the cooler smoke is blue, but oil consumption, fuel-related, considered normal.

  The engine exhaust should generally be in the engine warm-up state inspection, and analyzed by the color change of speed and acceleration processes in the smoke of a low-speed engines, medium speed,



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| 发布时间:2017.03.27    来源:佛山发电机