BMW S58, Руководство пользователя

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S58�Engine
7.�Oil�Supply
50
Index Explanation
3 Suction�pump
4 Oil�intake�snorkel,�sump,�rear
5 Return�opening
6 Oil�intake�snorkel,�sump,�front�right
7 Oil�intake�snorkel,�sump,�front�left
With�these�changes,�the�oil�supply�can�be�guaranteed�up�to�a�longitudinal�acceleration�of�1.3 g.�Even�in
the�case�of�lateral�acceleration,�for�example�during�cornering,�this�structure�enables�a�secure�oil�supply
up�to�constant�1.3�g.
In�such�driving�situations,�the�engine�oil�is�drawn�out�of�the�front�of�the�sump�through�the�front�oil
intake�snorkel�by�the�return�pumps�during�longitudinal�acceleration.�The�oil�drawn�off�is�pumped�back
to�the�rear�part�of�the�sump�via�the�return�pipe�in�the�aluminium�frame.�There�the�external�gear�oil
pump�can�take�up�the�oil�again�via�the�rear�oil�intake�snorkel�and�deliver�it�to�the�engine�lubrication
points.
Also�at�the�bearing�positions�of�the�exhaust�turbocharger�the�engine�oil�may�collect�due�to�the
centrifugal�force�during�lateral�acceleration�conditions.�This�prevents�a�normal�backflow�to�the�oil
sump�and�thus�also�a�supply�of�fresh�cool�engine�oil�at�the�bearing�positions.
To�counteract�this�effect,�at�the�bearing�positions�of�the�exhaust�turbocharger�the�engine�oil�is
continuously�drawn�in�by�the�suction�pump�and�delivered�to�the�oil�sump.
S58�engine,�oil�sump�with�suction�pump