compression ratio PORSCHE CAYMAN S 2012 2.G Information Manual

32
resonance intake manifold.
The resonance effect, where the air mass
inside the intake manifold is caused to
oscillate, is used to improve air induction
and, in turn, to optimise the formation
of the fuel/air mixture. In the Cayman S,
the manifold is also equipped with a
switchable resonance valve.
The results are high torque, a uniform
torque curve and high power output.

The sound produced is characteristically
resonant and deep.
Direct fuel injection (DFI).
Direct fuel injection (DFI) is featured as
standard in both Cayman models. Multi-
hole injectors deliver fuel directly into the
combustion chamber with millisecond
precision. The injection pattern has been
optimised for torque, power output, fuel
consumption and emissions. Combustion
is even more effective as a result.
With direct injection, the engine manage -
ment system regulates injection timing
individually for each cylinder as well as
the injection rate for each cylinder bank.
This optimises the combustion process
and therefore fuel economy. Depending on the engine operating con
-
dition, multiple fuel injections take place
so that the cataly tic converter reaches
normal operating temperature sooner
after a cold start and a greater top-end
torque can be achieved.
DFI improves the internal cooling of the
combustion chamber by having the mix -
ture prepared directly in the cylinder. This
allows for a higher compression ratio,
which helps to deliver greater power out -
put at the same time as enhanced engine
efficiency. Injection is regulated by the
electronic engine management system
and emissions are monitored by the
stereo Lambda sensors, thus helping to
protect the environment.
For fuel consumption, CO
2 emissions and efficiency class, please refer to page 131.
Drive |
Engine

131 Technical data.
CaymanCayman S
e ngine
C y linders 66
Displacement 2,70 6 c m
33,436 cm3
Max. power (DIN)
at rpm 202 kW (275 hp)
7, 4 0 0239 kW (325 hp)
7, 4 0 0
Max. torque
at rpm 290 Nm
4,500 – 6,500370
Nm
4,500–5,800
Compression ratio 12.5 : 112.5 : 1
Transmission
Layout Rear-wheel driveRear-wheel drive
Manual gearbox 6-speed6-speed
PDK (optional) 7-speed7-speed
Chassis
Front axle Lightweight spring-strut suspensionLightweight spring-strut suspension
Rear axle Lightweight spring-strut suspensionLightweight spring-strut suspension
Steering Variable steering ratio, power-assisted
(electromechanical) Variable steering ratio, power-assisted

(electromechanical)
Turning circle 10.9 8 m 10.9 8 m
Brakes Four-piston aluminium monobloc fixed calipers front
and rear, discs internally vented and cross-drilledFour-piston aluminium monobloc fixed calipers front
and rear, discs internally vented and cross-drilled
Vehicle stabilit y system Enhanced Porsche Stabilit y Management (PSM)
(with ABS 9.0) Enhanced
Porsche Stabilit y Management (PSM)
(with ABS 9.0)
Standard wheels Front: 8 J x 18 ET 57, Rear: 9 J x 18 ET 47Front: 8 J x 19 ET 57, Rear: 9,5 J x 19 ET 45
Standard tyres Front: 235/45 ZR 18, Rear: 265/45 ZR 18Front: 235/40 ZR 19, Rear: 265/40 ZR 19
CaymanCayman S
Performance
Manual/PDK Manual/PDK
Top speed km/ h (mph) 2 6 6 (16 5) / 2 6 4 (16 4)2 8 3 ( 17 5 ) / 2 81 ( 174 )
0 –100 km/ h (0 – 62 mph) 5.7 secs/5.6 secs 5.0 secs/4.9 secs
Sport Chrono Package (in conjunction with PDK) 0 –100 km/ h (0 – 62 mph) –/5.4 secs –/4.7 secs
0 –160 km/ h (0 –99 mph) 12.9 secs/12.8 secs 10.8 secs/10.7 secs
Sport Chrono Package (in conjunction with PDK) 0 –160 km/ h (0 –99 mph) –/12.5 secs–/10.5 secs
Flexibilit y 80 –120 km/ h (50 –75 mph) in 5th gear 8.0 secs/– 6.5 secs/–
Overtaking acceleration 80 –120 km/ h (50 –75 mph) –/3.6 secs –/3.0 secs
weightsManual/PDK Manual/PDK
Unladen weight (DIN) 1, 310 k g / 1, 3 4 0 k g 1, 32 0 k g / 1, 3 5 0 k g
Unladen weight (EC)
1)1, 3 8 5 k g / 1,415 k g 1, 3 9 5 k g / 1,425 k g
Pe r m issi b le gross we igh t 1,6 55 k g / 1,6 8 5 k g 1,6 6 5 k g / 1,69 5 k g
Dimensions/aerodynamics
Length 4,380 mm 4,380 mm
Width (including exterior mirrors) 1,8 01 m m (1,978 m m) 1,8 01 m m (1,978 m m)
Height 1, 2 9 4 m m 1, 2 95 m m
Wheelbase 2,475 mm 2,475 mm
Luggage compartment volume
(German Car Manufacturers’ Assoc.) (front/rear) 150
litres/275 litres 150 litres/275 litres
Tank capacity (refill volume) approx. 64 litres approx. 64 litres
Drag coef ficient 0.300.30
Fuel consumption/emissions 2)Manual/PDK Manual/PDK
Urban in l/100 km (mpg) 11.4 (24.8)/10.6 (26.6)12.2 (23.2)/11.2 (25.2)
Extra urban in l/100 km (mpg) 6.3 (44.8)/5.9 (47.9)6.9 (40.9)/6.2 (45.6)
Combined in l/100 km (mpg) 8.2 (34.4)/ 7.7 (36.7)8.8 (32.1)/8.0 (35.3)
CO
2 emissions in g / km 192 / 18 020 6/ 18 8
efficiency class 3)Manual/PDK Manual/PDK
Efficiency class (Germany) G/FG/F
Ef ficiency class (Switzerland) G/FG/F
1) Weight is calculated in accordance with the relevant EC Directives and is valid for vehicles with standard specification only. Optional equipment increases this figure. The figure given includes 68 kg for the driver and 7 kg for luggage.2) Data determined in the NEDC (New European Driving Cycle) in accordance with the Euro 5 (715/2007/ EC, 692/2008/ EC, 566/2011/ EC and ECE- R 101) measurement method. The figures do not refer to an individual vehicle nor do they constitute part of the
of fer. They are intended solely as a means of comparing dif ferent t ypes of vehicle. Fuel consumption calculated for vehicles with standard specification only. Actual consumption and per formance may var y with items of optional equipment. A vehicle’s fuel
consumption and CO
2 emissions depend not only on its ef ficient use of fuel but also on driving st yle and other non -technical factors. The latest Porsche models with petrol engine are designed to operate on fuels with an ethanol content of up to 10 %. You can
obtain further information about individual vehicles from your Porsche Centre.
3) Valid in the countries listed only.