Fuel Supply - Volkswagen 2004 Jetta Introduction Manual

Fuel Supply

Fuel for the 2.0L direct-injection engine is
supplied by a demand-controlled fuel pump.
This demand control was developed to
reduce the demands on the fuel pump and
improve fuel economy.
Fuel Demand Control System
Fuel Filter With Pressure
Limiting Valve
Fuel Delivery Module With Fuel Tank Sensor
Electrical Fuel Delivery
Fuel Pressure Regulator Valve N276
Triple Pump Cam
High-Pressure
Injector
332_073
Electronic
Power
Module
Pressure
Sensor
0.5-5 Bar
Short Return Line
The fuel pump maintains system pressure
but only supplies as much fuel as the
engine requires. The Engine Control Module
(ECM) and an electronic power module
control fuel pump speed through pulse
width modulation.
Low-Pressure
Fuel Circuit
Pressure Limiting Valve
Fuel Pressure Sensor G247
ECM
Pressure
Sensor
Rail Pressure 50-110 Bar
Suspension
Strut Turret
Injector System
Engines
High-Pressure
Pump
Low Fuel
Pressure
Sensor
G410
High-Pressure
Fuel Circuit
Pressure Control
Valve For Pressure
Exceeding 120 Bar
Injectors
332_078
47