Fuel System
Fuel System
The fuel system is an advanced version of the
system used on earlier TSI engines.
All parts which are in direct contact with fuel are
designed in such a way that the engine can run on
any available fuel grade.
Special materials are used to ensure the fuel
system meets all requirements relating to corrosion
protection.
Fuel Pressure
Sensor G247
PWM Signal From
Engine Control Module
36
Rail
Ter. 31
Ter. 30
The high-pressure system is supplied with fuel by
a returnless, demand controlled pre-supply system.
Fuel is delivered at a variable pressure between 50.7
psi (3.5 bar) and 87 .1 psi (6.0 bar).
No low pressure sensor is used in this system.
The correct fuel pressure is determined by
mapped settings of the engine control module and
subsequently set by Fuel Pressure Regulator Valve
N276.
High-Pressure
Fuel Pump
Fuel Pump (FP)
Control Module J538
Fuel Pressure
Regulator Valve N276
Fuel Filter
Fuel Tank