47
Engines
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.
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.
Pressure Limiting Valve
Low-Pressure
Fuel Circuit
High-Pressure
Fuel Circuit
High-Pressure
Injector
Triple Pump Cam
High-Pressure
Pump
Low Fuel
Pressure
Sensor
G410
Fuel Pressure Sensor G247
Fuel Pressure Regulator Valve N276
Fuel Delivery Module With Fuel Tank Sensor
Electrical Fuel Delivery
Fuel Demand Control System
Electronic
Power
Module
ECM
Fuel Filter With Pressure
Limiting Valve
Injector System
Pressure
Sensor
Injectors
Suspension
Strut Turret
Pressure Control
Valve For Pressure
Exceeding 120 Bar
Pressure
Sensor
0.5-5 Bar
Rail Pressure 50-110 Bar
Short Return Line
332_078
332_073
Содержание 2004 Jetta
Страница 1: ...Self Study Program Course Number 891403 The new Jetta New Model Introduction...
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Страница 83: ...79 Notes...
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Страница 86: ...Volkswagen of America Inc 3800 Hamlin Road Auburn Hills MI 48326 Printed in U S A December 2004...