Wednesday, 11 September 2013

Design and Specifications Porsche 918 Spyder

Design Porsche 918 Spyder
The 918 Spyder might pay homage to Porsche’s illustrious past, but its real mission is redefining supercar possibilities. Smart use of advanced technology works to eliminate the traditional conflict between performance and efficiency.


Faster, and theoretically more fuel stingy than any past Porsche, the 918 ventures beyond today’s expectations of hybrid technology to ensure that driving fun and extreme performance continue to thrive. This is the Porsche for the age of environmental responsibility.

You’ll never be able to pop open the hood on this exotic supercar. The 918 engineering team saved the weight of hinges, latches, and prop systems necessary with a conventional engine cover.

And besides, opening the hood would reveal little more than the 608-hp, 4.6-liter V-8’s exhaust piping, voluminous catalytic converters, and colossal mufflers because the engine itself is buried deep in the chassis.

This race-bred powerplant descended from the championship-winning Porsche RS Spyder’s racing V-8. The salient features that take it to the outer limits of power per cubic inch include centrally located direct fuel injectors, variable intake- and exhaust-valve timing, finger-follower valve actuation with hydraulic lash control, forged titanium connecting rods, dry-sump lubrication, and a flat (180 degree) forged-steel crankshaft.

The crank’s flat configuration enhances cylinder filling while adding wickedness to the exhaust note. There are no belt-driven accessories. A clutch between the V-8 and the centrally located 154-hp electric motor provides stop-start operation to eliminate fuel consumption in some operating modes.
Interior Porsche 918 Spyder
Specifications

VEHICLE TYPE: front- and mid-motor, mid-engine, 4-wheel-drive, 2-door targa

ENGINE TYPE: DOHC 32-valve 4.6-liter V-8, 608 hp, 391 lb-ft; 2 permanent-magnet AC synchronous electric motors, 127 and 154 hp; combined power rating, 887 hp; 6.8-kWh lithium-ion battery pack

TRANSMISSION: 7-speed dual-clutch automatic with manual shifting mode

DIMENSIONS:
Wheelbase: 107.5 in
Length: 182.8 in
Width: 76.4 in Height: 45.9 in
Curb weight (mfr’s est): 3616–3715 lb

PERFORMANCE (C/D EST):
Zero to 60 mph: 2.8 sec
Standing ¼-mile: 10.2 sec
Top speed: 211 mph

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