Porsche 911 GT3 -, Брошюра

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The new 911 GT3 | Drive
· 24 ·
VarioCam.
For the first time, the engine in the
new 911 GT3 is equipped with
enhanced VarioCam.This improved
system not only adjusts the
camshafts on the inlet side accord-
ing to engine speed and load,
it now also controls the exhaust
camshaft – for even more power
and torque. The continuous valve
timing adjustment is performed
by a rotary-type adjuster on each
camshaft. VarioCam is an engine
control concept that distinguishes
between different load scenarios
and adapts to the corresponding
power requirement.
The adjustment is performed
seamlessly by the Motronic ME7.8.2
electronic engine management
system. This enables smoother
running characteristics, better
fuel economy, lower exhaust
emissions and, most importantly
of all, added power and torque
across the entire engine speed
range.
Dry-sump lubrication.
A consistent oil supply is funda-
mental to track and competition
driving. This is ensured by the
dry-sump lubrication system,
even during extreme lateral and
longitudinal acceleration.
Once it has passed through the
engine, two scavenge pumps in
each cylinder head and another
two in the crankcase take the
engine oil quickly and efficiently
back to an external reservoir.
The oil pumps are designed so
that there is negative pressure
in the crankcase. This reduces
resistance to the movement
of the pistons to improve power
output and efficiency. Another
pump in the crankcase supplies
the lubricating points in the engine
from the external reservoir.
For the engine this means
consistent lubrication of the
crankshaft assembly and
the two cylinder banks, even
under the extreme lateral
and longitudinal loads which
are possible with sport tyres.
The new 911 GT3 is factory-filled
with Mobil 1 high-performance
fully synthetic oil. Its exceptional
lubricating properties ensure
reliable starting even in the
coldest conditions and, importantly,
contribute to the long-term durability
of the engine.
VarioCam