ECU lexus LFA 2012 Technical Information / LEXUS 2012 LFA NURBURGRING PACKAGE GUIDE

35
Powertrain
LFA_Nurburgring_U
In order to secure lubrication performance that could withstand high lateral accel-
eration, 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.
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44
LFA_Nurburgring_U
In order to further pursue emotive performance in the Nürburgring Package, a weight
reduction of the interior equipment has been achieved.
The adoption of full bucket seats and exclusive CFRP (Carbon Fiber Reinforced Plas-
tics) parts reduced vehicle weight and helped contribute to improved drivability. Addi-
tionally, the adoption of these interior parts raises the expectation of driving.
■Full bucket seats (Europe only)
In the Nürburgring Package, full bucket seats (RECARO RS-W) have been adopted
to secure a stable driving position across a variety of driving conditions.
For the frame, lightweight and high-rigid CFRP has been adopted, improving drivabil-
ity due to a vehicle weight reduction and achieving a high level of holding performance
even during sharp turns.
Additionally, while maintaining side support performance, the shape of the seats have
been optimized, increasing the ease of getting in and out of the vehicle and improving
daily usability of the vehicle when compar ed to those used on racing vehicles.
905 mm
74 0 m m
540 mm
465 mm
Interior
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