What is the effect of installing two Rolls Royce engines on the speedboat?

The core of Rolls-Royce is a special power drive system, a naturally aspirated 60-degree v 12 engine specially designed for Rolls-Royce, and a 6-speed automatic gearbox of zf.

The torque output curve of Rolls-Royce is almost always flat. At 1 000 rpm, it has produced a remarkable 500 Newton meters, which is 75% of its peak torque (the engine can reach a peak of 720 Newton meters at 3,500 rpm).

It takes only 5.9 seconds for a huge body weighing 2.5 tons to accelerate from standstill to speed 100 km/h, and the top speed can reach 240 km/h. The whole engine is hand-built by technical experts in Munich, which can output powerful power at extremely low speed, and it is quite quiet and stable, which is a classic in the industry. The huge torque reserve means that every time the driver steps on the accelerator, the car will accelerate smoothly without hesitation. When the speed reaches 5350 rpm, the rated maximum power output of the engine is 453 HP (338 kW, 453 HP, sae). Other technologically advanced features of this engine include variable valve timing and cutting-edge variable valve lift technology.

The latter is a highly efficient system, which uses the intake valve to adjust the amount of air entering the cylinder, thus overcoming the inherent defects of the throttle butterfly valve. Throttle butterfly valve is an integral part of internal combustion engine from the beginning. Therefore, the fuel consumption and instantaneous throttle response at low speed and uniform speed are improved. No matter how high the engine speed is, it can also output power smoothly. Phantom adopts V 12, 6.75 liter naturally aspirated engine specially developed by BMW. After transplanting to Phantom, the exhaust volume increased to 6749mL, and in-cylinder direct injection system was adopted.

The maximum power reached 338kW at 5350r/min, and the worst thing was that the engine output was only 25% at the speed of 160km/h, and the torque reached 540Nm at 1000r/min, which was almost 60% of the maximum torque. Phantom has a very unique display mode: there is no tachometer design in the instrument, but kinetic energy display, and the numbers in the table represent the percentage of engine output power. ZF's six-speed automatic transmission is used to control the huge energy of the engine. The control mode of the transmission adopts a cylindrical control lever similar to BMW. Gently pull the control lever to the D position, and the "palace" will move easily.