The Porsche 918 Spyder is a mid-engined plug-in hybrid supercar designed by Porsche. The Spyder is powered by a normally-aspirated 4.6 liter V8 engine, developing 608 horsepower (453 kW), with two electric motors delivering an additional 279 horsepower (208 kW) for a combined output of 887 horsepower (661 kW). The 918 Spyder's 6.8 kWh lithium-ion battery pack delivers an all-electric range of 12 mi (19 km) under EPA's five-cycle tests.The car has a top speed of around 340 km/h (210 mph)
The 918 Spyder is a mid-engined two-seater sports car designed by Michael Mauer. It is powered by a 4.6 litre V8 engine. The engine is built on the same architecture as the one used in the RS Spyder Le Mans Prototype Racing car without any engine belts.
The engine weighs 135 kg according to Porsche and it delivers 608 horsepower (453 kW) at 8,500 rpm and 528 N·m (389 lbf·ft) of maximum torque. This is supplemented by two electric motors delivering an additional 279 hp (208 kW). One 154 hp (115 kW) electric motor drives the rear wheels in parallel with the engine and also serves as the main generator. This motor and engine deliver power to the rear axle via a 7-speed gearbox coupled to Porsche's own PDK double-clutch system. The front 125 hp (93 kW) electric motor directly drives the front axle; an electric clutch decouples the motor when not in use. The total system delivers 887 hp (661 kW) and 1,275 N·m (940 lbf·ft) of torque. By October 2012 the engineering design was not finalized, but Porsche provided performance figures of 0–100 km/h (62 mph) in 2.5 seconds, 0-200 km/h (120 mph) in 7.2 seconds, 300 kilometres per hour (190 mph) in 19.9 seconds and a top speed of 340 kilometres per hour (210 mph). In Car and Driver's independent test of the Porsche 918, C/D achieved 0-60 mph in 2.2 seconds (making it the fastest car C/D has ever tested), 0-100 mph in 4.9 seconds, 0-180 mph in 17.5 seconds, and the 1/4 mile in 9.8 seconds. In Motor Trend's independent test of the Porsche 918, they also claimed it was the fastest car to 60 mph that they had ever tested. It stopped from 60-0 mph in 94 feet, and broke Motor Trend's figure 8 record at 22.2 seconds
No comments:
Post a Comment