AirDog® Champ

Common rail injection is over 30,000 psi

 

Smoke and mirrors, yes.. but there really is little to no air in your ISX, can't speak for the detroits or cats.

just skip ahead to 2:30

 

nope, about 320psi, skip to 1:40
my hydraulic line for my end dump has a working pressure of 30,000psi

 

Smoke and mirrors?
Hardly.



.

 

Cm570 is NOT HPCR, do you know what HPCR is ?

https://en.m.wikipedia.org/wiki/Cummins_ISX

Research the new ISX Motors, rail pressures over 30,000psi....35,000psi to be exact.
Even all modern pickup diesels are now 26,000+ psi rail pressure

 

Did you watch that video?
That fuel system isn't even pressurized, it's all vacuum feed until the air dog gets turned on, and then it does the exact same thing the ISX's fuel pump does. It pressurizes the system. Before he turned on the AirDog, there was no pressure, the gauge was on 0. Once he turned it on it went up to 20psi or something.

It might help with an engine without a high pressure fuel system, but on an ISX it'll be a waste.

 

I stand by my statement. These originate in Jeff City, MO....35 miles from where I spun wrenches for years. I've seen these on everything from Dodge pickups to Class 8 tractors and they simply compress existing air bubbles to allow the injector to fill more completely with fuel. If you eliminate those air bubbles they simply turn into a very expensive lift pump that simply isn't required or the engine manufacturer would've installed it at the factory.

 

Ok my good sir, i stand corrected. I have the IFSM on my truck which is the same fuel system in the video. Either way, the system is still designed to have little or no air in it. The higher pressures just means there's will be even less.

 

Presure doesn't make air disappear, no matter how high.
Air is compressible....my point. And that air causes damage to injectors and high pressure pump for several reasons, most basically the displacement of the fuel which is the lubricating and cushioning medium.

And Airdog or FASS remove the air by separation, there is a separate return line for the return fuel that is highly aerated. They work quite well.

I will agree than on your motor a lift pump isn't needed but it certainly doesn't hurt. The high pressure common rail systems really benefit from the removal because at extreme pressure, metal on metal wear caused by air displacing fuel is virtually eliminated.

Common rail engineers have also learned that particle size filtration in fuel systems is directly tied to component life. Filters are getting tighter and 5um is considered the max safe particle size now. Heck, old mechanical systems could run 25um filtration and were perfectly fine...not so with the new motors.

 

Yeh I heard year or two ago 30,000 psi was coming.

The air is from sloshing in the fuel tank. You can't see it.