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Identity shaping in threedigits: the new 911
THIS MODEL HAS BEEN THE GOLD STANDARD IN ITS CLASS FOR GENERATIONS.BUT NOW THE 911 SETS THE BENCHMARKS IN PERFORMANCE AND EFFICIENCY
EVEN HIGHER – DEMONSTRATING ONE HUNDRED PERCENT PURE PORSCHEINGENIOUS ENGINEERING.
The most efficient and sportiest Carrera ever
Cutting-edge 911 technology
Cutting-edge technology in every area
With the new generation of the 911,Porsche engineers have once again com -bined the latest technological develop-ments in an exceptional way, in order toprovide maximum driving pleasure andefficiency. This ingenious engineeringis not just evident in the sports cars,but also in a wide range of engineeringprojects for external customers. Aspects
like lightweight construction, perfor-mance, efficiency and emotions are in-creasingly playing an equally importantrole here as in the 911.
Efficiency
Lightweight construction throughoutthe vehicle and extremely economical
engines in comparison to their outputhave always given the 911 Carrera anexceptional power-to-weight ratio andexemplary fuel consumption. The newgeneration differentiates itself from thecompetition even further in both areas:with a power-to-weight ratio of 4.7 kilo-grams per kW (10.3 lb per kW), the new911 Carrera S clearly comes out top of
The new 911 Carrera embodies the competence, passion and technological expertise of
Porsche more than any other model generation. Four key development aspects define
the new 911: lightweight construction, performance, efficiency and emotions. Porsche
Engineering has also played a significant part in creating the new generation of the 911
by developing the new seven-speed manual transmission.
Cutting-edge 911 technology
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its class. And in NEDC consumption,the 911 Carrera and the 911 Carrera S,each with Porsche Doppelkupplungs -getriebe (PDK), once again boast un-matched and exceptional figures, with8.2 l/100 km (28.6 mpg imp.) and 8.7l/100 km (27 mpg imp.) respectively.
This huge step forward rests on thedesign: the entire new 911 Carrera hasbeen designed for more efficiency, mini-mized rolling resistance and optimizedoperating strategies. The main basis forthis efficiency is lightweight construction.The completely new aluminum-steel con-struction of the body not only enablesthe new model to be up to 45 kilograms(99 lbs) lighter than previous genera-tions, but also ensures a weight advan -tage of more than 100 kilograms (220lbs) over the lightest of competitors.
The mechanical components of the en -gines have been made even more friction-less, and to reduce consumption evenmore, vehicle electrical system recupera-tion and a map-controlled coolant ther-mal management system have beenadded. Through innovations and corre-sponding improvements in these twoareas, Porsche has succeeded in re -ducing consumption in the NEDC by0.45 l/100 km (522.7 mpg imp.). Theefficiency target has also been achievedwith the help of the first ever seven-speed transmission in automotive con-struction and the Porsche Doppelkupp -lungsgetriebe (PDK), also with sevenspeeds. Porsche Engineering led the de-velopment of the manual seven-speedtransmission, working together with thetransmission manufacturer ZF Friedrichs -hafen AG (see info box on pages 14/15).
spoiler was widened from 898 millime-ters to 1,137 millimeters. It is extendedautomatically at 120 km/h (75 mph) andretracted at 80 km/h (50 mph), but canalso be extended below these speedlimits at the push of a button. Furtheraerodynamic improvements were se -cured by optimized air brake spoilers,aerodynamically optimized exterior mir-rors, improved engine ventilation andoptimized fairings on the front wheels.
With the new 911 Carrera generation,Porsche has also further improved thefine details of the previous generation’sexemplary aerodynamics. The basic build -ing blocks of the aerodynamic designare the streamlined body surface, thenew rear spoiler and the cooling system,which does not require large air intakesunderneath the vehicle, thereby enablingthe smoothest possible vehicle floor. Theaerodynamically effective area of the rear
Cutting-edge 911 technology
The extremely impressive 911 Carrera and 911 Carrera S models are highly efficient with maximum performance
Using the latest technology for more performance and efficiency
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911 (Type 991): Fuel consumption (in l/100 km) combined 9.7-8.2; CO2 emissions 229-194 g/km
1. Lightweight structures2. Low drag, variable
aerodynamics3. Start/stop function,
coasting, on-board elec-trical system recuperation
4. Electro-mechanical steering
5. Drive train incl. seven-speed PDK/world’s first seven-speed MT
6. Engine technology7. Thermal management
of engine + transmission8. Reduced residual braking
torque9. Reduced tire
rolling resistance
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Porsche Engineering led the development of the world’s firstand only manual seven-speed transmission in the automotivesector, working together with the transmission manufacturerZF Friedrichshafen AG. The new transmission was based onthe Porsche Doppelkupplungsgetriebe (PDK). Taking theman ual gear changes into consideration, the ratios of thethird and seventh gears were modified in comparison withthe PDK. The third gear has a higher ratio, which reducesconsumption. The seventh gear has a lower ratio to maintainpulling power even at comparatively low speeds.
Shifting gears
Gears are shifted out via two cable winch mechanisms. Onecable is for selecting the gear and the other is for shifting it.The transmission uses an H-shaped shift pattern. As theman ual transmission is based on the PDK transmission, andneighboring gears (for example first gear and second gear)
are not positioned directly opposite each other in the PDKtransmission, a completely new internal gear shift had to bedeveloped. The goal here was to covert the shift pattern toan H-shaped shift pattern with a new internal gear shift. Themechanism that enables this conversion is based on an in-vention by the company ZF Friedrichshafen AG.
The development of the new seven-speed manual transmission
Ingenious Porsche Engineering
3 6 5R R 1 3 5
1 4 7R 2 4 6
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Shift pattern before conversion Shift pattern after conversion
The world’s first ever seven-speed manual transmission, developed by PorscheEngineering
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Cutting-edge 911 technology
Through this invention, any gear arrangement in the gear setof the transmission can be converted into an H-shaped shiftpattern that is familiar and comprehensible for the driver.The main element of the gear shift is the carrier shaft, whichcan move translationally (in a straight line) and rotationally(turning). The carrier shaft’s movement is transmitted to thecable winches outside it and transferred to the gears by thelever mechanism on the shift cover. In order to select a gear,the carrier shaft is pushed axially in the shift gear frame. Thecarrier shaft is then turned in order to shift gears. The shiftforks are linked to the individual shift gear frames via theshift rods. Through the unique arrangement of the shift fin-gers on the carrier shaft, the shift gear frames of each gearare moved at the same time through this rotation during theshift from first gear into second gear.
Seventh gear shift lock
In order to prevent inadvertently shifting to seventh gear, aspecial shift lock was developed. That means that it is onlypossible to change into the gate for seventh gear if fifth orsixth gear was selected beforehand. However, the driver canshift back down at any time.
Martin Kuhn
1. Fitted bolt2. Cover plate3. Flange bushing4. Spring5. Locking ring6. Carrier shaft
1 2 3 4
Figure 1Gate 3/4 selected Locking ring is decoupled from the carrier shaft by 1 mm
Figure 2Gate 5/6 selected Carrier shaft pushes the locking ring upwards and blocks gate 7
Figure 3Shift into fifth or sixth gear Carrier shaft rotates by 29° Locking ring moves back in axial directionand releases gate 7
Shifting out of fifth or sixth gear Carrier shaft rotates back to neutral position Locking ring is radiallypretensioned by the rotating spring
Figure 4Shifting to gate 7 Carrier shaft pushes the locking ring upwards
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In this way, like its forerunners, the new911 Carrera characteristically combinesexciting sportiness with exemplary effi-ciency. The formula for this: Porsche In-telligent Performance.
Performance
The proof of the 911 Carrera’s perfor-mance gain speaks for itself: the new911 Carrera with optimal sporty equip-ment can lap the Nürburgring’s Nord-schleife in 7:40 minutes – 14 secondsfaster than the previous model.
The overall design of the new 911 Car-rera provides the foundation for this sig-nificant improvement in performance.The lengthening of the wheelbase by100 millimeters and the wider fronttrack width alone – 46 millimeters widerin the 911 Carrera and 52 millimeterswider in the 911 Carrera S – results incompletely new vehicle geometry witheven more driving stability at highspeeds, when on the straight and whencornering.
developed from scratch for the new911 Carrera. This also has a tangible ef-fect on performance: When braking onroad surfaces with different levels ofgrip, a tug on the steering wheel im-parts a steering input in the desired di-rection, making it easier for the driverto stabilize the vehicle and keep it in thedesired lane.
Another decisive contribution to the im-pressive increased performance of thenew 911 Carrera is provided by the en -tirely newly developed optional PorscheDynamic Chassis Control (PDCC). Theintelligent control of the PDCC systemis, for example, able to exercise indi -vidual control over the hydraulic actua-tors, depending on the driving situation,influencing self-steering behavior in theprocess and consequently improvingvehicle stabilization.
Lightweight construction
With the new 911 Carrera, Porsche setsnew standards in lightweight construc-tion. Up to 45 kilograms less total weightthan the previous generation means atotal weight reduction of 98 kilogramsin the basic vehicle design. The reasonfor this difference: increased safety re-quirements, a longer wheelbase, fuelconsumption reduction measures and amore powerful product firstly led to aweight increase of around 58 kilogramsin comparison to the previous models.
The key to success was lightweight con-struction throughout the vehicle. For thefirst time in the new 911 Carrera, an alu-minum-steel body construction has beenused. The underlying idea of this design
The second main reason for improvedperformance is the new drive unit. Bothengines, with 3.5 liters and 3.8 liters dis -placement, have been designed accord -ing to motor racing principles for highrevs. The maximum engine speed of thesix-cylinder engines has been increasedby 300 rpm to 7,800 rpm. The entire in-take manifold has also been optimized.The intake air flows through flow-opti-mized channels, new multi-hole injec-tors inject the fuel more efficiently andexhaust emissions exit the 911 Carrerathrough a system with reduced back -pressure. The fine-tuning of the aero-dynamics has succeeded in reducingthe total lift (CA) of the new 911 Carreramodels by 0.02, to a mere 0.05.
Even more agility in the new 911 Carrerais provided by Porsche Torque Vectoring(PTV). This system consists of a mechan -ical limited-slip rear differential and vari-able torque distribution to the rear axle.
For the first time ever, Porsche hasused electro-mechanical power steering
Porsche identity: the unmistakable performance of the new 911
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The targeted use of awide range of materialshas resulted in a signifi-cant reduction in weight
Porsche Engineering contributed to the development and implementation of the leather interior design
styling meant that the engineers werefaced with quite significant challenges.Engineers at Porsche Engineering con-tributed to the development and imple-mentation of the overall leather designby designing the instrument cluster andthe center console as well as the carpet-covered elements. Specifically, they wereresponsible for creating a strategy forcomponent and tolerance layout andfor carrying out covering tests. Manag -ing system and component suppliersand cooperation with the Porsche leathermanufactory were also an important partof their job.
The driving experience in the 911 is de-fined by the design, the sound and thevehicle providing feedback from theroad to the driver through shifting gearsand revving the engine. The driver expe-riences real driving pleasure when hefeels the performance of the vehicle di-rectly. The main communicator of this is
the sound. Mechanical engine soundsare characterized by higher frequenciesand have tonal elements.
The basis of the sound design for the airintake and exhaust systems in the new911 Carrera was created in the very earlystages of the vehicle’s design. The lay-out and dimensions of the manifolds,pipes, catalytic converters and mufflerswere all visually illustrated and evalu -ated with the help of a computer modelbefore there was even any hardware.
The development of muffler systems isone of the core competencies at Porscheand is always carried out at the WeissachDevelopment Center. In order to allowthe driver to feel the revs and the powerof the engine, the pathways of the airintake and mechanical engine soundsare tuned so that messages from thenew 911 to the driver are transmittedin as pure and unadulterated form aspossible in all driving conditions.
Like no other sports car, the new 911Carrera shows that by combining thelatest cutting-edge technology, excep-tional performance and the highest effi-ciency can be achieved at the same time.Porsche engineers love the challenge ofreaching ever higher levels of perfor-mance – whether in a sports car or inan external customer project. There’s abit of 911 in all Porsche Engineeringprojects.
is using the right material in the rightplace. The extensive use of aluminum toreduce the vehicle’s weight is thereforebalanced with elements of steel of vary-ing degrees of strength for a more rigidbody and optimum occupant protection.
Parts that are especially important forpassive safety, such as the inner roofframe and the B-pillar, have been madein ultra high-strength, boron-alloyedsteels. The new modular roof designalso provides advantages in terms ofweight. For the series model without asliding roof, the steel outer skin of theroof has been replaced with significantlylighter aluminum.
The drive train, chassis and electricalequipment have all also been compre-hensively redesigned to be lighter. Thechassis accounts for more than five kilo-grams of weight reduction, mostly thanksto the newly constructed front axle withcompact lightweight suspension strut.
Emotions
A highlight of the 911 design is the leatherinterior of the vehicle. Typical Porsche
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With its completely newly developed and unique roof de-sign, the Cabriolet continues what the Coupé began withits new aluminum-steel body. The typical 911 roof contourshave been entirely preserved for the first time. Intelligentlightweight construction, which also includes the use ofmagnesium for the construction of the convertible top, hasensured less weight and more sportiness, as well as lowerconsumption and greater comfort. Porsche has managedto reverse the weight spiral for all convertible 911s and hasmanaged to make the new Cabriolet models significantlylighter than their predecessors.
Both new Cabriolets have the same drive system as theCarrera Coupés. A 3.4-liter boxer engine with 257 kW (350 hp)
operates in the rear of the 911 Carrera Cabriolet, and its poweris transmitted to the rear wheels by the seven-speed manualtransmission. The open-top 911 Carrera S has a 3.8-litersix-cylinder engine with 294 kW (400 hp) and also comeswith a seven-speed manual transmission as standard. Theconvertible 911s also differentiate themselves stronglyfrom the competition in another way: in the NEDC bothmodels consume less than ten liters of fuel for 100 kilome-ters (23.5 mpg imp.). Alternatively, Porsche Doppelkupp -lungsgetriebe (PDK) can also be optionally selected for theCabriolet models, which makes even lower fuel consumptionand shorter acceleration times possible.
The longer wheelbase compared to the previous model,the wider front track at the front axle and the new electro-mechanical power steering give the new Cabriolets evensportier driving characteristics, more precision and increasedagility. On top of that, additional active control systems areavailable as standard or as an option depending on the model,which will improve driving dynamics even further.
The new open-top models of the 911 Carreraand the 911 Carrera S also belong to the newgeneration of the classic 911 sports car – theopen-air season can begin.
The 911 Carrera Cabriolet debuts an innovative new roof design
Out in the open
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