Fuel Pumpability

Since the quality of the fuel greatly affects the operation of the engine and the whole car, then you need to know and understand the kind of fuel use and how to choose. Pumpability of fuel is one of the three components quality fuel. The power supply system of diesel engines in addition to the fuel tank, pumps, fuel lines include strainers - to hold the mechanical particle sizes greater than 50 - 60 microns - and fine-to capture the solid particles larger than 2. 5 microns - cleaning. The nature of the receipt of fuel through the food system affect its viscosity, low temperature properties, as well as contamination by mechanical impurities, water and soaps of naphthenic acids. Than higher the viscosity, the harder it is pumped fuel, especially in winter.

Therefore, to neutralize the negative effects of increasing viscosity in the winter time, feed boost pump, which accounts for the main burden of pumping fuel, usually in three to five times the required flow for the engine. For low-temperature fuel properties include its turbidity and zastyvanie.Pomutnenie fuel occurs during cooling and is caused by fallout from the liquid phase microcrystals of solid hydrocarbons (paraffin). For more information see Paul Price. If clouding of the fuel does not lose strength. However, the size of the microcrystals allow them to pass only through the coarse filter. In the fine filter, they are stopped, and the filter cartridge while a thin, impervious to fuel, paraffin film, resulting in the fuel supply is stopped. Temperature, at which the fuel becomes cloudy, called the cloud point temperature. Interruptions in the supply of fuel due to turbidity often observed when starting and warming up a diesel engine, engine compartment when the car is held still low temperature. As the engine warms outages for this reason are becoming rare, and when working in hot condition occur only at very low temperatures, when strongly cooled in the fuel tank Diesel fuel does not have time to warm up in the fuel lines to engine compartment.