Flashcards in Tuesday April 10th, 2018 Deck (11):
Water in fuel system
Arguably the greatest problem to fuel systems.
The first filter in the fuel stream from the fuel tank.
Before the transfer pump.
Removes large particles.
The second filter in the fuel stream.
Located between the primary filter and the high pressure fuel injection.
Positive displacement. ( one way check valve)
Pressurizes the output side to very high pressure.
Supplies fuel at low pressure (7 psi).
Engine camshaft activates this pump.
Operated by the camshaft.
Can withstand higher pressures.
Required for priming newly installed filters.
Also purges air from the fuel system when turned off.
Roller vane pumps
A permanent magnet electric motor rotates rollers.
Two check valves are located in the this pump one on each inlet an outlet.
Pump that uses rotating vanes or rollers to pressurize fuel
Fuel transfer pumps
Used to move low-pressure fuel from the fuel tanks to the high pressure fuel system.