Technical data

28
9
Electric oil pumps
When cornering at high speeds, the
centrifugal force forces the engine oil into the
outer cylinder head so that it can no longer
flow back into the oil pan of its own accord.
It must therefore be pumped off by the
respective oil pump and returned to the oil
sump. The electric oil pumps are activated by
the engine control unit that determines the
cornering speed with a yaw rate sensor.
The electric oil pumps are protected by heat
shields from the heat radiated from the
exhaust manifolds.
Oil spray nozzles
Double-hook oil spray nozzles are used on the
S85 for the purpose of cooling the piston
crown.
The oil spray nozzle is equipped with an
integrated pressure control valve.
Opening pressure: 1.8 to 2.2 bar
Closing pressure: 1.3 to 1.9 bar
Oil filter housing
A thermostat that opens the path to the
engine oil cooler is mounted in the head of the
oil filter housing.
Exhaust manifold
The S 85 is equipped with a 5-in-1 exhaust
manifold with near-engine catalytic converter
for each cylinder bank. The pipes or runners of
the manifold are made from stainless steel
(X 15 Cr Ni Si 20-12) and have a wall thickness
of 0.8 mm.
24 - Exhaust manifold