2013 Porsche Carrera 4S
From 1964,
after some success in motor-racing, namely with the Porsche
550 Spyder, the company launched the Porsche 911 another air-cooled, rear-engined sports car, this time with a six-cylinder "boxer" engine. After
that we have seen the 911 in refined and more refined design and improved
performance till now .The future avatar of 911 Carrera 4S will definitely shocked
you .
With the Carrera 4 and
Carrera 4S, Porsche rolls out the first four-wheel-drive versions of its new,
seventh-generation 911. Porsche claims theprevious version of the
Carrera 4 accounted for 34
percent of 911 sales worldwide. Replacing last year’s 997-based
models, the new Carrera 4 and 4S coupes will go on sale early 2013, with the
cabrio iterations of both due in spring.
Compared with the rear-drive Carrera, the rear fenders of the 4 and 4S each flare an extra 0.9 inch, and a
1.4-inch-wider or 1.7-inch-wider rear track (Carrera 4S, respectively) and
slightly wider tires lurk under those zaftig hindquarters.
Engine:
The 911 Carrera 4S models are powered by a 3.8-liter boxer
engine with direct fuel injection (DFI) and VarioCam Plus. It produces 400
horsepower at 7,400 rpm and the maximum torque of 325 lb.-ft. is achieved at
5,600 rpm. It goes 0-100 Kmph in 4.3 sec . The top track speed
is 185 mph.
Consumption(Highway): 26 mpg.
With optional Porsche Doppelkupplung (PDK), the
911 Carrera S accelerates from 0 to 60 mph in 3.9 seconds and achieves a top
speed of 187mph. The new Carrera 4S completes the 0 to 60 mph sprint in 4.0
seconds and boasts a top speed of 185 mph.
And the Price $105,630 and 58,22848.34 INR
Features
Efficiency-enhancing
measures
A
widely held belief about motorsport is that power is the only thing that
matters. From experience, we know better. Extra horsepower alone has never been
enough to win a single race. Much more important to us are ideas – ideas that
inspire more intelligent vehicle concepts and more efficient drive systems. The
same applies on the road. It’s about getting the most out of what you’ve got.
The Auto Start/Stop function is standard in the 911 Carrera
models.
In cars with the manual gearbox, the engine
switches off automatically when, for example, you stop at traffic lights, select neutral and release
the clutch pedal. In cars with Porsche Doppelkupplung (PDK), the engine
switches off whenever you stop and leave your foot on the brake pedal.
All audio and communication systems remain
switched on and the climate control continues to maintain your selected
temperature. The only differences you will notice are the silence at the rear
and the fuel saving. As soon as you operate the clutch or release the brake,
the engine will restart swiftly and smoothly.
Coasting
The ‘coasting’
function available with Porsche Doppelkupplung (PDK) enables you to save even
more fuel where the situation allows. The engine is decoupled from the
transmission to prevent deceleration caused by engine braking. In this way,
optimum use is made of the vehicle’s momentum, allowing it to coast for longer
distances.
For example, you
may want to slow down from 65 to 40 mph in anticipation of the change of speed
limit ahead. As soon as you release the accelerator pedal, PDK deselects the
current gear automatically and you begin to coast in neutral until you have
reached your desired speed. The moment you engage the accelerator or brake
pedal, PDK selects the appropriate gear smoothly and seamlessly within a
fraction of a second.
Another way to reduce
fuel consumption is to utilize the coasting function on downhill gradients that
are gentle enough for you to maintain a constant speed. Efficient on long
journeys, such as on the motorway, PDK remains ready to respond as swiftly and
precisely as you would expect.
In short, driving in coasting mode makes a real
impact on fuel consumption without any need for compromise on comfort or sporty
performance.
7-speed manual
transmission
Pure, direct,
precise. Short shift movements and an optimum transition from one gear to the
next. That’s exactly what you would expect of a Porsche manual transmission.
What you might not have expected is a 7-speed
manual transmission that combines a high level of sporty performance with an
equally high level of efficiency and offers extra comfort for longer journeys.
It’s an exceptional innovation, and not only in the sports car segment.
The design of this manual transmission is based
in principle on that of Porsche Doppelkupplung (PDK). Gears 1 to 6 have a
sports ratio and top speed is reached in 6th gear. The additional 7th gear,
however, has a long ratio, which reduces torque and helps to reduce fuel
consumption. Lower engine revs at fast driving speeds also ensure a high level
of comfort on long stretches of road.
In addition, a gear
indicator in the rev counter reminds you which gear has been selected. The
upshift indicator in the instrument cluster helps you actively conserve fuel.
Thanks to the elevated center console, the gear
lever is within easy reach – ideal for sporty gear changes.
Whether you select a sporty or comfortable gear,
the way you reach your destination is in your own hands.
Porsche
Doppelkupplung (PDK)
Available as an
option for all 911 Carrera models is 7-speed PDK, featuring manual and
automatic modes. It facilitates extremely fast gear changes with no
interruption in the flow of power, whilst at the same time improving
acceleration and fuel efficiency.
In total, PDK has seven gears at its disposal.
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. This double-clutch arrangement provides an alternating,
non-positive connection between the two half gearboxes and the engine by means
of two separate input shafts. The flow of power from the engine is transmitted
through one half gearbox and one clutch at a time, while the next gear is
preselected in the second half gearbox. During a gear change, therefore, one
clutch simply opens and the other closes at the same time, enabling gear
changes to take place within milliseconds.
The effect is instant. Driving feels even
sportier and more dynamic, and agility is increased. Depending on the gearshift
program (SPORT button activated or deactivated), the gear change is optimized
for comfort or for sporty driving.
With the optional Sport Chrono Package, PDK is
enhanced by the ‘Launch Control’ and ‘motorsport-derived gearshift strategy’
functions.

Porsche Traction
Management (PTM)
It is possible to
have a lot of power and yet not be able to move anything. Only by using your
power intelligently will you truly progress – and with consummate ease.
Enhanced Porsche Traction Management (PTM) is
standard on all 911 Carrera all-wheel-drive models. It is an active
all-wheel-drive system with an electronically variable map-controlled
multi-plate clutch, automatic brake differential (ABD) and anti-slip regulation
(ASR).
Drive power is distributed between the
permanently driven rear axle and the front axle by means of the electronically
variable multi-plate clutch.
The status of the vehicle is continuously
monitored so that it is possible to respond to different driving situations.
Sensors are used to collect a range of data, including the rotational speed of
all four wheels, the lateral and longitudinal acceleration of the car and the
current steering angle.
If, for example, the rear wheels begin to lose
traction under acceleration, a greater proportion of the drive power is
automatically transmitted to the front axle by a more positive engagement of
the multi-plate clutch. In addition, ASR prevents wheel spin by adapting the engine’s
power output. During cornering, the optimal level of drive power is distributed
to the front wheels to ensure excellent lateral stability.
In conjunction with Porsche Stability Management
(PSM), PTM helps to ensure the perfect distribution of drive power for optimum
traction in most road scenarios, whether on long straights, through tight
corners, or on surfaces with different friction coefficients.

Exhaust system