2012 Lexus LFA User Guide - Page 5

Powertrain In order to secure lubrication performance that could withstand high lateral acceleration, seven independent scavenger pumps were adopted and are located in both sides of the cylinder head, the front and rear chain case and the crankcase, pumping the collected engine oil into the air-cooled oil cooler and the oil tank. Only the oil with a high temperature collected from the crankcase is pumped into the air-cooled oil cooler, minimizing drops in pressure, which in turn reduces the pump's driving loss. The oil tank's construction achieves stable oil circulation even during high lateral acceleration due to the adoption of a vertically long shape and specially designed baffle plate. Within the oil tank, cyclone type gas-liquid separation is performed and air bubbles are removed from the collected oil. The oil is then sent to the lower part of the oil tank and supplied to various parts of the engine via the feed pump which is located on the same horizontal axis as the scavenger pump. While a similar sequence of circulation is common with the standard package, it plays a more important role in the Nürburgring Package, which pursues an even higher level of driving performance. 35