audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

Fuel System Components - New Locations|Page 2295 > < Fuel System Components - New Locations|Page 2293
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Fuel Accumulator: Description and Operation

Fig. 5  Fuel Accumulator

The fuel pressure accumulator, Fig. 5, performs three functions:

1. It dampens the operating noise of the fuel supply pump.
2. It ensures sufficient output to the injectors, by delaying fluctuations in pressure within the supply circuit.
3. It maintains pressure in the circuit after shutting off the engine in order to prevent "vapor lock", and ease hot restarting procedures.

Fuel System Components - New Locations|Page 2295 > < Fuel System Components - New Locations|Page 2293