Rolls Royce Griffon V12 Mk58 36.7 litre engine run at Duxford Flying Legends
Duxford airfield, Saturday 30th of June 2012. Flying Legends airshow.
Startup - full throttle - shutdown.
Guys on the left were working on RR Merlin which didn't startup at that
Shutter speed was automatic, since propellers look strange.
New Mercedes Benz V8 biturbo engine
http://www.eurocarnews.com - Mercedes Benz AG - In the new V8,
Mercedes-Benz engineers achieved a high output from a lower displacement
primarily by using one turbocharger for
each bank of cylinders. The intake air is forced into the eight combustion
chambers at an overpressure of up to 0.9 bar, with the turbine blades
rotating at up to 190,000 rpm. The turbochargers and their hot gas ducting are
accommodated on the outsides of the cylinder heads. This enables the Intercooler module with its
air/water Intercooler and
charge-air distributor to be located inside the V of the engine -- a
solution which Mercedes-Benz engineers found to be advantageous following a
long series of tests. This is confirmed by the output and fuel consumption
figures achieved in practice.
The Mercedes-Benz engine designers configured the turbochargers to provide high torque even at low
engine speeds. Compared to the previous engine, the result is an increase
in torque at 2000 rpm by more than 45 percent. An outstanding 700 Nm is
available between 1600 and 4750 rpm. The driver therefore perceives no turbo lag, but experiences the same
pleasant and effortless performance from the new V8 as that delivered by a
mighty, naturally aspirated 7-litre engine.
The engine is based on a diecast aluminium crankcase with aluminium/silicon
cylinder liners. The developers adopted the basic and connecting rod
journal diameters from the preceding engine, while raising the piston
compression height for load reasons by just about 4 millimetres. By
reducing the lift and shortening the connecting rod by two millimetres, it
was possible to retain the interior height of the crankcase. Showing the
high efficiency of the turbocharged V8,
which is configured for premium petrol (RON 95), the compression ratio of
10.5:1 remains unchanged versus the naturally aspirated preceding engine.
Mercedes Benz Special Trucks UNIMOG Plant in Woerth
Mercedes Benz Special Trucks UNIMOG Plant in Woerth.
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