Fuel-System Protection at Work

摘要

That layer of dust on your television screen is composed of particles about 40 microns in size. Seems harmless, but particles much smaller―between 5 and 15 microns―can destroy expensive components in a diesel-engine fuel system in a surprisingly short time. Add some water to the fuel, and the prospect of harming the system further increases. The moral of this story is that fuel filters and fuel/water separators are your primary defenses against fuel-system hazards, so be careful about economizing in this area. At the risk of oversimplifying, diesel fuel systems have a low-pressure side and a high-pressure side. The low-pressure side pulls fuel from the tank via a transfer pump, conditions it by removing dirt and water, then delivers it at a specified pressure (usually less than 100 psi) to the high-pressure side.