Porsche 991

Porsche 991
Overview
Manufacturer Porsche
Also called Porsche 911
Porsche Carrera
Production 2011–present
Assembly Stuttgart, Germany
Designer Michael Mauer
Body and chassis
Body style 2-door coupe
2-door targa
2-door convertible
Layout Rear engine, rear wheel drive / all wheel drive
Related Ruf RGT
Powertrain
Engine 3.4 L H6
3.8 L H6
Transmission 7-speed manual
7-speed PDK
Dimensions
Wheelbase 2,450 mm (96.5 in), 2,457 mm (96.7 in) (GT3)
Length 4,491 mm (176.8 in) (Carrera), 4,506 mm (177.4 in) (Turbo), 4,545 mm (178.9 in) (GT3)
Width 1,808 mm (71.2 in) (Carrera), 1,880 mm (74.0 in) (Turbo), 1,852 mm (72.9 in) (GT3)
Height 1,303 mm (51.3 in) (Carrera), 1,296 mm (51.0 in) (Turbo), 1,269 mm (50.0 in) (GT3)
Curb weight 1,380 kg (3,040 lb) (Carrera), 1,605 kg (3,538 lb) (Turbo), 1,430 kg (3,150 lb) (GT3)
Chronology
Predecessor Porsche 997

The Porsche 991 is the internal designation for the seventh generation Porsche 911 which was unveiled at the 2011 Frankfurt Motor Show on 15 September as the replacement for the 997. The 991 is an entirely new platform, only the third since the original 911 launched in 1963 (the 996 of 1999 was the second new platform). The design has taken an evolutionary design step, in keeping with the previous generation 997 and 996. Designer of the 991 is Porsche home designer Michael Mauer.

Compared to the outgoing 997, the 991 is slightly larger, with the wheelbase increased by 100 mm (3.9 in) to 2,450 millimetres (96.5 in), and the overall length up by 70 mm (2.8 in) to 4,490 millimetres (176.8 in).[1] A new transaxle was developed so that the rear wheels could be moved 76 millimetres (3 in) backward in relation to the position of the engine, which significantly improves the weight distribution and cornering performance of the new 911.[2][3]

Due to the use of high-strength steels, aluminium and some composites the weight has been reduced to 1,380 kg (3,040 lb) for the manual Carrera, rising to 1,605 kg (3,538 lb) for the four wheel drive Turbo model with PDK (Porsche Doppelkupplung). PDK is available as an option for all 911 Carrera models as 7-speed transmission, featuring manual and automatic modes. Gears 1 to 6 have a sports ratio and top speed is reached in 6th gear. 7th gear has a long ratio and helps to reduce fuel consumption by keeping engine revs low. PDK is essentially two gearboxes in one and thus requires two clutches. For all 991 models PDK is produced by ZF Friedrichshafen.

The auto start/stop function is standard in the 911 Carrera models.

Design

Typically for Porsche Carrera, 991 is evolutionary design step. Two basic principles were strictly respected: the roof line tapers down into the rear and the front wings are higher than the lid.

Models

911 Carrera

Base model, introduced in 2011. Car is equipped with a 3.4 litre boxer engine with direct fuel injection. The engine develops 257 kW (350 hp) at 7,400 rpm and the maximum torque is 390 Nm at 5,600 rpm. For the 911 Carrera with 7-speed manual gearbox, this means acceleration from 0 to 100 km/h in 4.8 seconds and a top speed of 289 km/h.

911 Carrera S

Introduced with 911 Carrera, in 2011; and equipped with more powerful 3.8 litre engine developing 294 kW (400 hp).

911 GT3

With the introduction in 2012 of the latest GT3 model came the announcement of active rear steering. It is claimed by Porsche to provide higher lateral dynamics than previously available. Car speed inputs determine whether the rears steer in the same or opposite direction of the front wheels. It is the first GT3 offered only with automatic transmission.

At the start of 2014, deliveries of the GT3 were halted following two fires.[4] A subsequent recall to replace the engines of all 785 cars was announced in March 2014 before manufacturing of the GT3 would restart.[5]

2016 Porsche 911 GT3 RS

At the 2015 Geneva Motor Show an RS model was unveiled featuring a 4.0 L F6 packing 500 hp.

911 Cabriolet

In February 2012, the convertible model of the 991 was announced. Initially available in Carrera Cabriolet and Carrera S Cabriolet models,[6] a Turbo version was added to the range at the 2013 Frankfurt Motor Show.[7]

911 Targa

In January 2014, Porsche introduced the Targa 4 and Targa 4S models. These new derivatives come equipped with an all-new roof technology with the original targa design, now with an all electric cabriolet roof along with the B-pillar and the glass 'dome' at the rear.

911 Turbo and Turbo S

The 991 Turbo has a twin-turbocharged 3.8 litre engine generating 520 PS (382 kW; 513 bhp) and 620 N·m (457 lb·ft) of torque.[8] The S version has 560 PS (412 kW; 552 bhp) and 700 N·m (516 lb·ft) of torque, but the torque is pushed to 750 N·m (553 lb·ft) with over boost. Both vehicles have all-wheel drive and a seven-speed dual clutch sequential transmission. The Turbo S can reach 0 – 100 km/h in 3.1 seconds as claimed by Porsche but has achieved 2.6 seconds by many car magazine tests.[9][10] New technologies featuring adaptive aerodynamics and rear wheel steer are new on these cars.

Engines

All 911s are powered by a flat-six engine, with a direct injection 3.8-litre is carried over from the previous Carrera S, with power increasing to 400 PS (294 kW; 395 hp). A Powerkit option is available for the Carrera S, increasing power to 430 PS.[11] The standard Carrera engine is a 3.4-litre, producing 350 PS (257 kW; 345 hp). The car features stop/start system, a coasting function and also electro-mechanical power steering to aid efficiency.

New for the first time on a 911 model are electronic parking brakes (button selectable) and 20 inch diameter wheels. The car also features a new seven-speed manual gearbox, a first for a production car, along with an improved seven-speed Porsche Doppelkupplung (PDK) dual clutch transmission.[12]

Model Engine cc Power Torque
Carrera 3,436 cc (210 cu in) 350 PS (257 kW; 345 bhp) @ 7,400 rpm 390 N·m (288 lb·ft) @ 5,600 rpm
Carrera S 3,800 cc (232 cu in) 400 PS (294 kW; 395 bhp) @ 7,400 rpm 440 N·m (325 lb·ft) @ 5,600 rpm
Carrera GTS/S Powerkit 3,800 cc (232 cu in) 430 PS (316 kW; 424 bhp) @ 7,400 rpm 440 N·m (325 lb·ft) @ 5,600 rpm
GT3 3,799 cc (232 cu in) 475 PS (349 kW; 469 bhp) @ 8,250 rpm 440 N·m (325 lb·ft) @ 6,250 rpm
Turbo 3,800 cc (232 cu in) 520 PS (382 kW; 513 bhp) @ 6,000 rpm 660 N·m (487 lb·ft) @ 1,950 rpm (710 N·m (524 lb·ft) overboost)
Turbo S 3,800 cc (232 cu in) 560 PS (412 kW; 552 bhp) @ 6,500 rpm 700 N·m (516 lb·ft) @ 2,100 rpm (750 N·m (553 lb·ft) overboost)

Performance

Model Transmission Engine Top speed Acceleration 0-100 Emissions CO2
Carrera 7-speed man 3.4 289 km/h (180 mph) 4.8 211 g/km
Carrera 7-speed PDK 3.4 287 km/h (178 mph) 4.6 191 g/km
Carrera (sc)* 7-speed PDK 3.4 287 km/h (178 mph) 4.4 191 g/km
Carrera S 7-speed man 3.8 304 km/h (189 mph) 4.5 223 g/km
Carrera S 7-speed PDK 3.8 302 km/h (188 mph) 4.3 202 g/km
Carrera S (sc) 7-speed PDK 3.8 302 km/h (188 mph) 4.1 202 g/km
Carrera S (sc/pk) 7-speed PDK 3.8 308 km/h (191 mph) 4.0 205 g/km
GT3 7-speed PDK 3.8 315 km/h (196 mph) 3.0 289 g/km
Turbo 7-speed PDK 3.8 315 km/h (196 mph) 3.4 227 g/km
Turbo (sc) 7-speed PDK 3.8 315 km/h (196 mph) 3.2 227 g/km
Turbo S 7-speed PDK 3.8 318 km/h (198 mph) 2.6 227 g/km

(SC) = Sport Chrono (PK) = Powerkit

Awards

The Porsche 991 was titled World Performance Car 2012[13] shortly after famed Porsche designer Ferdinand Alexander Porsche died. The GT3 was awarded the title of World Performance Car Of The Year in 2014.[14]

References

  1. ↑ Neil, Dan (11 February 2012). "Porsche's Magnificent First Stab at the New 911". The Wall Street Journal. p. D13.
  2. ↑ Tim Pollard (4 November 2010). "Porsche 911: 2011’s new 991 generation scooped". Car Magazine. Retrieved 3 August 2011.
  3. ↑ Ben Pulman (26 July 2011). "Porsche 911 (2011) the clearest spyshots yet". Car Magazine. Retrieved 3 August 2011.
  4. ↑ "Porsche warns 911 GT3 owners to stop driving". Daily Telegraph. 20 February 2014. Retrieved 21 April 2014.
  5. ↑ "Porsche to replace all 911 GT3 engines after fire risk". Auto Express. 18 March 2014. Retrieved 21 April 2014.
  6. ↑ "Porsche 911 Cabriolet review". Daily Telegraph. 15 February 2012. Retrieved 21 April 2014.
  7. ↑ "2013 Porsche 911 Turbo gets Cabriolet version". Evo. 23 September 2013. Retrieved 21 April 2014.
  8. ↑ "Technical Specs - 911 Turbo - 911 Overview - Dr. Ing. h.c. F. Porsche AG". Porsche AG - Dr. Ing. h.c. F. Porsche AG. Retrieved 30 September 2014.
  9. ↑ "Technical Specs - 911 Turbo S - 911 Overview - Dr. Ing. h.c. F. Porsche AG". Porsche AG - Dr. Ing. h.c. F. Porsche AG. Retrieved 30 September 2014.
  10. ↑ "Audi R8, Porsche 911 Turbo, BMW M6 und Nissan GT-R im Vergleich - autobild.de". Retrieved 30 September 2014.
  11. ↑ "Porsche 911 Carrera 4S is a porker with extra gristle". Daily Mirror. 22 March 2013. Retrieved 21 April 2014.
  12. ↑ Ben Barry (12 October 2011). "Porsche 991: our comprehensive guide to the new 911". Car Magazine. Retrieved 16 January 2012.
  13. ↑ "Porsche 911 Named 2012 World Performance Car". sacbee.com. Retrieved 9 April 2012.
  14. ↑ "World Car Awards 2014". http://www.wcoty.com. Retrieved 25 April 2014.

External links

Wikimedia Commons has media related to Porsche 991.