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Given the 45 degree cant from vertical of the cylinder banks, natural return of oil to the sump might have been inadequate during extreme cornering. Thus, engineers devised a unique system to ensure effective engine lubrication at all times. In addition to the main oil pressure pump, there are two scavenging suction pumps, one for each cylinder bank. In normal and light cornering conditions, oil from the heads and main bearings flow back into the semi-dry sump at the rear of the engine via the two suction pumps. In hard cornering 0.9g or more, the Dynamic Stability Control system's lateral-g sensor switches magnetic valves to reroute oil extraction points to alternate locations the outer sides of the heads and sump preventing a backup of oil collecting in the outside of the head, thus avoiding potential oil starvation. This system remains active even if the driver switches off the Dynamic Stability Control.


The rest of the article can be found here BMW S62 : S62
 
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