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Page 1 of 5 The BMW M5 V10
The ultimate in sports saloon motoring has got a name: M5. This finest 5 Series
vehicle is the most powerful of all time: five litres of cubic capacity, ten
cylinders, a maximum output of 507 bhp (373 kW), a peak torque of 520 Newton
metres and engine speeds redlining at 8,000 rpm, these are figures that speak
for themselves. In an unprecedented way, these figures blur the lines between
a car for everyday use and a vehicle for ambitious motor sport racing.
A successful recipe for two decades: power without overstatement.
With its performance figures, the fourth-generation M5 once again sets the benchmark
in the segment of powerful sports saloons, a niche which the first M5 carved
for itself back in 1984. During the last 20 years, this first M5 and all its
successors have made their mark, always setting the standard as a perfect symbiosis
of a comfortable, elegant saloon for everyday use, abundant output delivered
by a powerful engine and ultimate sportiness. With sales figures exceeding 20,000,
the M5 has proved to be an economically successful concept which combines prodigious
performance with understatement, a basic feature of all M automobiles.
This principle reaches its culmination in the new M5: this 'extreme athlete'
with its subtle appearance and the seemingly endless power of its ten-cylinder
high-revving engine, which interacts perfectly with the seven-speed SMG gearbox,
introduces the driver to completely new dimensions of effortlessness. To put
it in a nutshell: in its class, which it shares with top-class competitors,
the M5 excels due to the most innovative drive concept, the best power-to-weight
ratio, supreme handling and excellent everyday driving qualities. It is a fully
roadworthy saloon with the heart of an athlete, a sports car which is perfectly
suited for everyday motoring. The new M5 skilfully combines these two virtues.
First high-revving V10 engine to be featured in a regular-production
saloon.
The V10 is the only high-revving power unit to be featured in a series-production
car. Featured in the most powerful production car within the BMW model family,
this new engine once again sets the benchmark in its class. There is, however,
more to it than pure performance. What is important for M automobiles is acceleration
and driving dynamics, the latter which is dependent on the actual forward thrust
and the vehicle's weight. The drive forces at the driven wheels are significantly
influenced by the engine torque and the total ratio. The high-revving concept
caters for an optimum transmission and rear-axle ratio, thus guaranteeing an
impressive forward thrust.
The perfect choice: high-revving concept.
For the BMW M engineers the compact, high-revving normally aspirated engine
was the ideal choice. With a red line of 8,250 rpm, the ten-cylinder engine
has ventured into terrain which has so far been reserved for red-blooded racing
cars. Compared to the previous M5 eight-cylinder engine, performance has increased
by more than 25 percent. The M5 has also surpassed the magical 100 bhp per litre
limit, its specific output being on par with that of racing cars.
A masterpiece in engine construction.
The two five-cylinder banks of the V10 are arranged at an angle of 90° to
achieve a mass balance of the crankshaft drive, which is optimised for low vibration
and increased comfort. For reasons of stiffness and due to the high loads resulting
from combustion pressure, engine speed and vibrations, a bedplate design has
been chosen for the crankcase, the first-ever application in a production V
engine by BMW. For an optimum alignment of the crankshaft, grey-cast iron inserts
have been integrated into the aluminium bedplate, which also serve to enhance
acoustics, increase vibrational comfort and ensure a high oil supply rate. The
extremely stiff crankshaft is supported by six bearings.
High-pressure bi-VANOS and individual throttle butterflies.
The bi-VANOS variable valve timing featured in the new M5 engine ensures an
optimum charge cycle, thus helping to achieve extremely short adjustment times.
This means in practice: increased performance, an improved torque curve, optimum
responsiveness, lower consumption and fewer emissions. Each cylinder has its
own throttle, a feature typical of racing cars. Throttle control is fully electronic
and cylinder bank specific.
Dual exhaust system made of stainless steel.
The exhaust system is made of seamless stainless steel and has a dual-flow design
all the way to the silencers. The exhaust gases finally leave the system through
four tailpipes which are what make the rear end of the M vehicles so unmistakable.
The exhaust system complies with the European EU4 and the US LEV2 emission standards.
The engine control module: the first of its kind in the world.
The MS S65 engine management system is the central factor behind the V10's outstanding
performance and emission data. This engine management system is unparalleled
in its package density. Its processors are the most powerful ones which are
currently approved for use in automobiles, as high engine speeds and comprehensive
management and control tasks demand the utmost from this system.
Highlight in engine management: ionic current technology.
The ionic current technology featured by the engine management unit is a technological
highlight which serves to detect engine knock, misfiring and combustion misses.
Utilising the spark plug in each cylinder, this system helps to pinpoint engine
knock, to check for correct ignition and to detect any ignition misses. Thus,
the spark plug has a dual function - as an actuator for the ignition and as
a sensor for monitoring the combustion process.
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