A8 Quattro Sedan V8-4.2L (AKB) (2002)
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Camshaft: Description and Operation
Camshaft adjustment control, function
The adjustment of the intake camshafts is controlled according to engine load and engine speed. The timing of the exhaust camshafts is not variable.
The electrically operated solenoid valves for camshaft adjustment transmit oil pressure to the mechanical camshaft adjusters.
The mechanical camshaft adjusters then advance the inlet camshafts for both cylinder banks, which means that the inlet valves will open earlier.
