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How “common rail” Diesel comes?

Posted on 12/26/2015 2:04:44 PM

The“common rail” technology is a term used by Vulcan Raptor,which in aero diesel you will common read.It is not used in the aero diesel until now while you could usually see in the  European diesel automobiles.In theory we thought the common rail diesel systems just like fuel injection in your car.The fuel is delivered by pump to a "so-called" rail (reservoir) at a certain pressure.Because all the fuel injectors are connected to the rail,it got its name.In the command of ECU (Electronic Control Unit) or ECM (Electronic Control Module) in the fuel injection computer,the injector opens & close.In practice, the differences between spark ignition and compression ignition fuel injection systems are significant.It is proventhat the constant fuel pressure is usually run between 36 and 72 psi.In the other hand,according to the engine need,the fuel pressure vary in the Vulcan common rail systems.It runs between 5000 and 26100 psi (no that’s not a misprint, it’s 26,100 psi).Timing the fuel injection also requires far more accuracy than a gasoline engine. The Raptor can use Diesel #2 fuel available in a regular gas station.

Jet A is the jet fuel commonly available at most airports.#2 diesel is a better lubricant than Jet A and in the past most diesels engines required a lubricant additive to run Jet A.In order to use Jet A,the Vulcan system was designed while doesn't need the used of any additives.Interestingly, even though #2 diesel and Jet A have different weights per gallon, a fact that pilots need to keep in mind when computing weight and balance, they have almost the same energy content per unit volume.This allows the pilot to mix approved fuels in any ratio in the tanks.all aero diesels will accomodate any of the two fuels gradually is expected highly while the first to openly offer it on the market is Vulcan.

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