Stupid physics question of the week ...
#1
Stupid physics question of the week ...
Ok so what's wrong with this picture :
1) Fuel Pump -> Pressure Gauge -> FPR -> Fuel Rail -> Injector
Shouldn't it be :
2) Fuel Pump -> FPR -> Pressure Gauge -> Fuel Rail -> Injector
Assuming Pump is running at a higher pressure than the FPR, then the pressure before the FPR, A) = Pump pressure, while the pressure after the regulator B) = actual Fuel Pressure (which is what I'm really after ... :-)
A) Not Equal B)
Correct setup is 2) ... right ?
Too many years & frazzled brain cells, forgot all my undergrad physics, help me close an argument - thanks
1) Fuel Pump -> Pressure Gauge -> FPR -> Fuel Rail -> Injector
Shouldn't it be :
2) Fuel Pump -> FPR -> Pressure Gauge -> Fuel Rail -> Injector
Assuming Pump is running at a higher pressure than the FPR, then the pressure before the FPR, A) = Pump pressure, while the pressure after the regulator B) = actual Fuel Pressure (which is what I'm really after ... :-)
A) Not Equal B)
Correct setup is 2) ... right ?
Too many years & frazzled brain cells, forgot all my undergrad physics, help me close an argument - thanks
#5
I think you're right but the FPR is still connected to the fuel rail . . .
and while I'm not 100% sure how these things really work I think there is a fundamental difference in FPR operation on turbocharged systems.
So I guess there is only a need for one guage, so I guess my previous post is wrong.
I found this picture in a document I have . . .
<img src="http://66.134.70.69/files/audi/fuel_system.jpg">
So I guess there is only a need for one guage, so I guess my previous post is wrong.
I found this picture in a document I have . . .
<img src="http://66.134.70.69/files/audi/fuel_system.jpg">