BMW M5 Wartungshandbuch PDF herunterladen (Seite 31)

The high pressure pump consists of the fixed

stator about which the rotor rotates. Five

moving plungers are mounted in the rotor. The

stator and rotor are installed off-centre in the

pump housing. The plungers are guided

radially as the rotor rotates thus producing the

pump stroke motion.

The pressure relief valve integrated in the high

pressure pump opens in response to pressure

peaks in the high pressure system and opens

up a bypass to the oil pan.

The oil pressurized at 115 bar is routed via

three delivery lines to the two VANOS control

units and to the pressure accumulator.

VANOS High pressure system

6 - Feed valve in high pressure pump

Index Explanation

1 Engine oil

2 Oil feed, high pressure pump

7 - High pressure radial piston pump with fixed stator 1 and moving rotor 2

Index Explanation

1 Rotor

2 Stator

3 Pump housing

4 Engine oil is supplied by the stator

and taken up by the pistons

5 Engine oil is compressed and

returned to the stator at 100 bar

8 - High pressure line

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BMW M5 Wartungshandbuch Seite 31