03-21
2210-01
1. OVERVIEW
The components in fuel system supply the fuel and generate the high pressure to inject the fuel to each
injector. They are controlled by the engine ECU.
The common rail fuel injection system consists of fuel tank, fuel line, low pressure line which supplies lo
pressure fuel to the low pressure pump (including high pressure pump), common rail which distributes
and accumulates the high pressurized fuel from the fuel pump, high pressure line which connected to
the injector, and the engine control unit (ECU) which calculates the accelerator pedal position and
controls the overall performance of vehicle based on the input signals from various sensors.
1) Fuel Flow Diagram
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