The new Ducati engine, derived directly from the Desmosedici GP will soon to go into production and be fitted to the new sports bikes from the Italian manufacturer. In fact the new Ducati Panigale V4 will be unveiled on November 5th, 2017, put that in your calendar.
Ducati officially unveiled the Desmosedici Stradale V4 engine in Misano during the San Marino and Rimini Riviera GP, the thirteenth round of the 2017 MotoGP championship.
The Desmosedici Stradale V4 Engine
While the Desmosedici Stradale engine is undoubtedly suited to the track, it has also been designed to respond to the needs of the road rider. For example, to maximise mid-range torque – essential for a satisfying road experience – and ensure punchy torque and power at lower revs, the engine has a slightly larger displacement than its MotoGP counterpart (1103 cm³, to be precise). Power output from the Euro 4 compliant engine configuration exceeds 155 kW (210 hp) at 13,000 rpm while maximum torque exceeds 120 Nm (12.2 Kgm) from 8,750 to 12,250 rpm.
An R version with a displacement of less than 1000 cc – which revs higher and is intended more for track use – is currently at the advanced development stage.
This will provide the foundation for the homologated version that competes in the Superbike championship, where this engine will be used starting in 2019 (one year on from the launch of the respective road version, as per the Ducati tradition).
Just like the Ducati bikes used in racing, the crankshaft is counter-rotating. This reduces the overall gyroscopic effect and is designed to make the bike faster and more agile in direction.
The crank pins, offset at 70 degrees, just like the Desmosedici GP, utilises a Twin Pulse firing sequence that generates easy-to-handle power delivery and optimises out-of-the-corner traction (referred to as the “Big Bang” effect). This firing sequence also gives the Desmosedici Stradale a unique signature sound.
A 90 degree V4 configuration makes the engine extremely compact. The engine will be inserted in the motorcycle with the front cylinders banked 42° back from the horizontal, similar to the Ducati engines used in MotoGP. This optimises weight distribution, allows the adoption of larger radiators and brings the swingarm pivot point forwards.
The engine has an 81 mm cylinder bore. This measurement reflects the maximum limit allowed by MotoGP rules; it’s also the highest in the 4-cylinder supersport segment.
Ultimately this means both power units, the Stradale and the Desmosedici GP share nearly identical in-engine fluid dynamics (i.e. on valves, intake ducts and throttle bodies, right where the power is produced).
Variable-height air intake horns constitute another first for a Ducati factory bike, optimising cylinder intake across the rev range and giving significant advantages in terms of power delivery and handling.
Completing the fuelling system are the oval throttle bodies, each equipped with two injectors: one above the butterfly and one below it.
Main Technical Specifications
- 1,103 cm³ 4-cylinder 90-degree V
- Bore x stroke 81 x 53.5 mm
- Compression ratio 14:1
- Maximum power exceeds 210 hp at 13,000 rpm
- Maximum torque exceeds 120 Nm from 8,750 to 12,250 rpm
- Counter-rotating crankshaft
- Twin Pulse firing sequence, crank pins offset at 70°
- Euro 4 emissions
- Desmodromic part chain, part gear timing with dual overhead camshaft, 4 valves per cylinder
- Wet multiplate anti-patter servo clutch
- Semi-dry sump lubrication with four oil pumps: 1 delivery and 3 return
- Fuelling with four oval throttle bodies (52 mm diameter equivalent) and variable-height intake horns
- 6-speed gearbox with DQS up/down system
- 24,000 km “Desmo-service” maintenance interval (15,000 miles)
Cannot wait to see the new Ducati Panigale V4 in November, that is going to be something very cool.