Turning Waste into Energy
The V8 produces a peak power of 550 PS (542 bhp, 404 kW), with maximum torque of 770 Nm at 2000 rpm, maintaining this as a flat plateau through to 4500 RPM.
A key feature of the twin-scroll turbochargers is the two separate, parallel flow channels in the turbine housing specifically guiding the exhaust gases to the vanes of the turbine wheel, resulting in high torque being available at low speeds. The turbochargers are located inside the V of the engine, minimizing the distance the exhaust gases travel from the engine to the turbochargers which can operate at 176,000 rpm and generate up to 1.6 bar of boost pressure. The resulting instantaneous torque output delivers a 0-60 mph time of 4.0 secs (0-100 kph, 4.1 secs).
Additionally, like the central turbocharger layout, another design feature of the eight-cylinder engine is the close proximity of the catalytic converters to the cylinders inside the V. This configuration allows the emissions control system to come up to its optimal operating temperature quickly. The catalytic converter heating is accelerated in the engine start phase by opening the turbocharger wastegates.
The Perfect Mix
Two high-pressure fuel pumps driven directly by the camshafts supply the eight solenoid-driven injectors with fuel at a pressure up to 250 bar – 14 times the boiler pressure required to move a 60-ton steam locomotive.
The injectors are mounted centrally in the combustion chamber immediately adjacent to the spark plug, producing jets of fuel through seven nozzles into each cylinder to achieve the optimum spray pattern – and therefore air/fuel mixture - before ignition. The design of the air inlet ports supports increased tumble in the flow of the air charge entering the cylinder, with this turbulence helping to disperse fuel across the cylinder for a cleaner combustion process and reduced emissions.
To withstand high stress and bore wear, the cylinder bores are coated with an iron alloy using an atmospheric plasma spraying process, creating a coating that is robust yet just 150 microns thick, similar to the thickness of a sheet of paper.
Adaptable in Changing Situations
To maximize fuel economy, the V8 engine can shut down four of its eight cylinders under light-load conditions, when torque demand is below 250 Nm and engine speed is below 3500 RPM. The change is imperceptible to the occupants – with deactivation times of around 20 milliseconds (a tenth of the time it takes to blink).
The engine uses a two-stage sliding cam system which switches off cylinders two, three, five, and eight as necessary via the intake and exhaust valves. The result is a fuel consumption benefit to the customer of up to 30 percent depending on engine load and speed, which means increased range, lower environmental impact, and longer driving between fuel stops.
Beyond the Driving Force
The new Flying Spur V8 has been engineered to deliver driver-focused ability, whilst offering passengers the refinement, comfort, and technology expected from a grand limousine.
The Flying Spur range is purposeful yet elegant with classic Bentley design, best-in-class execution, and authentic materials. The new Flying Spur V8 not only has contemporary engine technology but also includes the latest driver assistance and infotainment systems for enhanced safety, security, and relaxation on every journey.
