Dr. Thomas Weber, Member of the Board of Administration accountable for Group Analysis and Head of Improvement, Mercedes-Benz Cars: "With the SLK we provide a wide range of technical options to give customers a private choice. Among them are various unique innovations. Moreover, the SLK is a main instance of how spectacular performance, trendy driving consolation and high ecological requirements can go hand in hand. Within the one hundred twenty five-year history of the automobile, we now have by no means experienced such main leaps in efficiency. Decrease gas consumption and much more driving pleasure - a components we definitely translate into reality in the SLK."
Outstanding on all fronts
The very best or nothing - this motto is at the coronary heart of the Mercedes-Benz philosophy, and also the guiding theme for the brand new SLK. From the beginning the roadster was designed to supply high performance in all areas, and Mercedes-Benz engineers have rigorously translated this requirement into actuality giving the SLK attributes that provide the roadster with a peak place in its segment. Among them are extremely compact dimensions combined with a generous interior with numerous practical features. Outstanding performance and sporty, agile handling are also major characteristics of the brand new SLK. The new SLK can be the safest roadster with its unrivalled range of security features.Dr Joachim Schmidt, Head of Sales and Advertising at Mercedes-Benz Vehicles: "Firmly embedded within the genes of the SLK is exhilarating driving pleasure in any climate situations, open or closed, for recreation or day-to-day driving. It combines its sporty character with excellent consolation and high-grade appointments. The new SLK additionally units new standards among the many compact roadsters the place gasoline financial system and environmental compatibility are concerned. A wealth of outstanding attributes and technical improvements will once again make it the benchmark in its class - and undoubtedly also a success for our brand. The SLK is a roadster with character, and everyone will need it."
Striking, athletic and stylish
The designers have tailor-made a physique for the brand new SLK that emphasizes its classic roadster proportions. Behind the long hood is a compact passenger compartment and a short rear overhang - key attributes that characterize all of the traditional roadsters from Mercedes-Benz.
Professor Gorden Wagener, Head of Design at Mercedes-Benz Vehicles: "The SLK continues the illustrious roadster tradition of Mercedes-Benz, and excitingly takes it into the future. The design idiom accentuates its energetic, athletic presence, and can be sculptural. It expresses character and sensuality. The identical applies to the interior. High-grade supplies, lovingly crafted particulars and a really exclusive end characterize the basically very sporty atmosphere."
Putting front end
The primary eye-catching characteristic is an upright radiator grille that bears the brand new Mercedes-Benz model look. The grille emphasizes the long and properly-proportioned hood, and with its gentle-catching contours it already hints at the roadster's dramatic qualities. The large radiator grille bears the Mercedes-Benz star in a distinguished central place and shows a powerfully contoured chromed fin on the front. The clearly defined headlamps complete the look of the brand new SLK's face and resemble that of the legendary 190SL from the Nineteen Fifties, which is regarded by many as being the unique "SLK". Nevertheless, the designers did not simply concentrate on the past; with the brand new SLK's front end they also intentionally created a close visual link with the brand new Mercedes-Benz SLS AMG "gullwing" and the brand new CLS-Class.
The impressive results of this meticulously detailed work is that despite the more striking, steeper entrance and bigger frontal area, the Cd worth has been reduce to only 0.30 - a brilliant achievement (the predecessor model's Cd worth was 0.32).
Dramatic traces
The timeless, traditional form of the side profile with the classic roadster proportions embodies aesthetics of the best caliber and is a visual cue to the car's sportiness and driving pleasure. Fine details show the care that has been taken by the Mercedes-Benz designers. For instance, a molding conceals the trunk joint, in order that the side line would not intervene, as it often does with related roof designs. The ventilation grilles in the front fenders with a chromed fin are harking back to the well-known Mercedes-Benz roadsters of the 1950s. In the new SLK, they kind the perfect starting point for a feature line, which flows to the muscular rear fender, using mild and shadow to add fashion and timeless aesthetics to the sides. Meanwhile, the upper edge of the large headlamps - which for the first time characteristic LED know-how - additionally seems to movement into the feature line.
This line is emphasised by the stemmed exterior mirrors, that are positioned on the beltline where they allow a greater ahead view to the side with their very narrow stems painted in the vehicle color. Their refined aerodynamics also helps to keep the facet home windows practically grime-free, while making certain a low stage of wind noise.
Muscular rear finish
On the rear, the attention is drawn to the integrated spoiler lip and vast tail light clusters. For the first time, the tail lights with their pronounced horizontal design are in all-LED technology. Their higher edge extends ahead into the sides, culminating within the function line. A twin exhaust system with trapezoidal tailpipes rounds off the muscular impression.
Premium supplies and stylish sportiness
Regardless of essentially the most compact dimensions in its class, the 2012 SLK has beneficiant inside dimensions. To realize this, the designers have developed interior appointments that offer the driving force and passenger the highest diploma of high quality and precision. The interior is characterized by trendy sportiness and real excessive-high quality materials which have been manufactured with good precision and expert craftsmanship. Normal brushed aluminum trim covers the middle console; wooden trim might be ordered as an choice in high-gloss dark brown burl walnut. Four round, metallic air outlets integrated in the dashboard emphasize that this mannequin truly belongs to the Mercedes-Benz sports automobile household, their shape being a nod to these in the SLS AMG.
Echoing the outside design, the black dashboard emphasizes the horizontal lines and width of the vehicle. The SLK's beneficiant round dials flank a show for the onboard computer. The colour display for the communications and leisure functions is housed in the middle console and is easily learn by both the motive force and passenger.
An ergonomic multifunction sports activities steering wheel with a flattened bottom and thick leather-based rim makes the high quality and athletic character of the brand new SLK a relentless tactile experience. Shift paddles and steel trim on the spokes add both sportiness and refinement. The interior could be enhanced even additional with the Trim package deal which includes a wood/leather-based steering wheel and shift knob.
The sweeping traces of the higher dashboard part are continued into the door panels. The middle panel of the door is color-coordinated with the interior and the door pulls and seat adjustment switches are trimmed in aluminum or optional wood.
Sporty yet comfortable seats
The sporty, ergonomic seats with adjustable crash-responsive NECK-PRO head restraints built-in into the backrests have high facet bolsters for optimum lateral support and comfort on lengthy journeys. Convenience and seating comfort is offered by electric seat adjustment with memory features and four-way lumbar support.
The Mercedes-Benz SLK350 gives a choice of Black, Sahara Beige or Ash solar-reflecting leather in addition to Black and Bengal Red Premium solar-reflecting leather which noticeably reduces warmth build-up. The leather has a special coating which displays the solar's rays and measurements have shown that this reduces the temperature of the seats by greater than 18 levels Fahrenheit - a big enchancment in consolation when the car has been parked within the sun.
As in the earlier mannequin, the neck-degree heating system AIRSCARF is out there as an elective extra for the brand new SLK. This creates a flow of heat air across the neck and shoulder areas of the occupants from a vent within the front of each head restraint.
Attractive lighting
An ambient lighting system accessible for the first time as an option in the Sport Package deal creates a powerful effect within the interior of the brand new SLK. It consists of discreet optical fibers in SOLAR RED, which produce a pleasing yet dramatic lighting impact in the door panels, across the door pulls and on each side of the center console. This temper-enhancing ambient lighting is activated when the doors are opened ("welcome home" effect), and its intensity could be individually diverse by a dimmer.
The central interior lights are located in the overhead control panel and contains two interior lights and a center console spotlight. Moreover, a single LED is situated in every A-pillar to provide additional inside illumination on entry and exit.
Intelligent storage compartment concept
The brand new SLK affords an exemplary number of storage choices to offer versatility and day-to-day utility. The glove compartment has been enlarged by 26% as compared with the earlier model. In addition, the glove compartment lid consists of useful options reminiscent of holders for a pen, bank cards and coins.
There are three storage compartments in the center console - under the air conditioning controls, dual cupholders subsequent to the COMAND controller on the center console and under the center armrest with a 12 V socket, USB interface and AUX connection (optionally a media interface for integration of an iPod is available as a part of the Premium 1 Package deal). A net attached to the tunnel within the passenger footwell is fitted with a versatile bottle-holder which may securely accommodate even 50 fl. oz. bottles.
Glorious local weather
The new SLK is supplied with a windshield defogging sensor in the stem of the rear-view mirror which registers the glass temperature and interior humidity stage of the brand new SLK. In dry weather, when no cooling is required however the A/C is working, the management system powers the compressor down however prompts it as quickly because it detects that the windshield is fogging-up. This has two benefits:
* The A/C perform can remain active all the time, however the demand-controlled system saves energy.
* Because the air con solely demoisturizes and cools as a lot air as is required to take care of the inside temperature, the air is never too dry to detract from the consolation of the occupants.
Progressive technology with a unique roof
Driving a roadster is a really emotional experience, conjuring photos of cruising by the countryside with the sounds and smells of the outdoors, the highest down and the solar shining. Rainy climate would not have much influence because the SLK-Class has at all times a retractable arduous-prime which converts the roadster right into a coupe with a hard and fast roof at the touch of a button. Mercedes-Benz engineers have always refined the laborious-top and maintained the SLK's pioneering function on this technology.
Unique tools: MAGIC SKY CONTROL
For the first time Mercedes-Benz is providing a alternative of three variants of the lightweight-construction retractable arduous-prime for the new SLK:
* The standard roof is painted within the car color.
* Optionally available is a panorama roof with dark-tinted glass.
* The third choice is a world premiere - the panorama roof with MAGIC SKY CONTROL. This glass roof switches to light or dark transparency on the press of a button. In mild mode it is nearly transparent, providing an open-air expertise even in chilly weather. In its dark state the roof offers welcome shade and prevents the inside from heating up from the sun's rays. In different words: a snug atmosphere on the contact of a button.
The operating principle is based on the physics of a plate condenser: if the glass construction is subjected to an electrical voltage, particles within the construction place themselves in order that gentle is ready to pass through the glass. If the voltage stays switched off, nevertheless, the particles place themselves randomly. This partially blocks the sunshine, and the glass remains dark. The control unit and converter are built-in into the entrance part of the roof, and the swap is in the overhead management console.
UV and infrared gentle are additionally effectively blocked in transparent mode, whereas insulation will increase even more significantly and noticeably in darkened mode, thereby helping to keep the temperature on inside components equivalent to armrests cooler by up to 18 levels Fahrenheit compared with typical tinted glass.
Measurements using a device known as a star pyranometer in Loss of life Valley, one of the world's hottest places, impressively demonstrated the effect. This machine measures the intensity of publicity to sunlight. With an open roof, the thermal load from the solar within the heat of Demise Valley reached a thousand to 1100 W per sq. meter. With the clear glass roof it dropped to 200 W, and when the roof was switched to darkened mode with MAGIC SKY CONTROL, it dropped to forty to 50 W - one twentieth of the unique worth and fewer than a 60 watt bulb.
Because the revolutionary glass additionally shields in opposition to the solar's rays far more successfully than standard thermal insulation glass or sunblinds, the occupants of the brand new SLK also benefit from the highest degree of climatic comfort. When driving with the roof open could be disagreeable as a consequence of intense heat, the motive force and entrance passenger are capable of relax below the MAGIC SKY CONTROL roof - an essential contribution to onboard comfort and the driver-fitness security typical of a Mercedes. Even when the car is parked the interior does not overheat since the roof is switched to darkened mode when the ignition is turned-off.
MAGIC SKY CONTROL not solely advantages passengers but in addition the environment as a few of the pressure is taken off the air-conditioning system, thereby saving on CO2 emissions.
As well as, the frame of the three roof variants is now of magnesium. This makes each roof around thirteen lbs. lighter than in the previous model, giving the automotive a decrease middle of gravity.
The engineers have also refined the working mechanism for the roof and trunk lid. It now takes lower than 20 seconds to open or shut the roof completely. The improved mechanism additionally creates more trunk capacity.
Totally appropriate trunk for everyday use
The luggage capacity with the retractable hardtop closed is 10.1 cubic feet. A golf bag or a big suitcase can be no problem.
When the roof is opened the capability is diminished to 6.four cubic ft, adequate area for 2 massive sports bags, for example with tennis equipment.
To forestall luggage from colliding with the roof components there is a baggage cover within the trunk which will be pivoted longitudinally. The roof can only be opened if this cowl is pivoted to the rear, and when the roof is closed the cover can be easily pivoted forward by hand to facilitate loading and unloading, and makes the total trunk capacity available.
Bodyshell construction with aluminum elements
The bodyshell structure already proved highly profitable in the previous model, and was weight-optimized still further for the new SLK. Accordingly the hood and entrance fenders are product of aluminum for the primary time, as are the dashboard cross-members and the rear finish; the rear bulkhead module is made of fiber-bolstered plastic. The torsional rigidity of this optimized lightweight metal development was improved even further because of the clever use of lightweight development strategies, decreasing the bodyshell weight by around 29 pounds.
The doorways are fully new, with reinforcement at the beltline and at the decrease edge. A section of high-strength metal ensures wonderful facet impression protection. The nicely-proven A-pillars with welded-in oval tubes of hot-shaped extremely-excessive-strength metal and a sturdy nodular connection to the facet members remain unchanged.
To keep repair costs down, the front side members have a prescribed reducing point for a sectional restore, and their shape causes them to bend forward of this area in the event of a collision.
Exemplary aerodynamics
Along with familiar features akin to a spoiler lip on the higher edge of the trunk lid, wheel spoilers in front of the wheels, and full engine compartment and underbody cladding, the newly designed exterior mirrors and painstaking modifications to the A-pillar cladding contributed to the excellent drag coefficient.
The A-pillar cladding is an effective example of meticulous growth work. It took more than one yr to develop a plastic cover that would mix strict design requirements with correct functionality. The result is a pillar cowl with a advantageous front edge and a drainage channel on the higher surface. This ensures a really close airflow and due to this fact a big discount in air resistance, drafts, aeroacoustics and soiling of the outside mirrors and aspect windows.
AIRGUIDE: Modern windstop system
A cushty various to the standard windstop is the brand new pivoting AIRGUIDE which has been invented by Mercedes-Benz aerodynamics engineers. It consists of pivoting clear plastic shields that are hooked up to the roll bars. That is the world's first windstop that permits totally different comfort ranges to be selected by the two occupants. The motive force and passenger can individually pivot the items to the middle of the automobile in an instant and tame turbulent air stream without any set up or removing effort.
Fashionable headlamp know-how and LED daytime running lamps
The Mercedes-Benz SLK350 is provided with horizontally arranged LED daytime working lamps with 4 LEDs. The brand new SLK could be optionally geared up with the Lighting Package deal which offers lively and cornering gentle functions.
The energetic headlamp consists of intuitive headlamp range management which robotically adjusts the angle of the sunshine beam to changes in the automotive's perspective - for example pitching movements when braking and accelerating - or to accommodate changes in automobile loading.
The vast tail lights of the brand new SLK characteristic full-LED expertise for the primary time. This not only ensures an unmistakable nighttime design, but additionally permits LEDs to shine with totally different intensities in specific areas of the tail light cluster, depending on their lighting function. LED know-how has other advantages: compared to typical bulbs they gentle up around 0.15 seconds sooner, and still have a considerably longer working life.
Athletic spirit and ecological effectivity
The 2012 SLK350 is powered by a redesigned direct-injection V6 engine developing 302 hp/273 lb-ft. of torque from its 3,498 cubic-centimeter displacement, using this power to accelerate in 5.4 (est.) seconds from 0 to 60 mph (top pace 155 mph). Its gas consumption is estimated at 20 metropolis/29 hwy mpg due to its third-technology direct injection, piezo injectors and multi-spark ignition.
Launching afterward within the mannequin year, the SLK250 goes on-sale with a turbocharged four-cylinder direct-injection engine growing 201 hp/229 lb-ft of torque from a displacement of 1,796 cubic centimeters. The SLK250 is supplied with a normal 6-speed handbook transmission and consumes an estimated 23 city/31 hwy mpg. From a standstill it reaches 60 mph in 6.5 seconds, and it has a prime velocity of a hundred and fifty five mph.
New V6 engine with revolutionary technology
The six-cylinder engine is part of the brand new V6 family of environment friendly direct injection engines. Often known as BlueDIRECT, this innovation establishes the V-engines from Mercedes-Benz as worldwide benchmarks and makes an additional reduction in gas consumption by 20 percent doable by engine modifications alone.
The V-angle of the brand new V6 engine is simply 60 degrees. This permits the stability shaft for primary vibrations to be omitted. In consequence, the motive force notices a excessive degree of comfort. The crankcase, pistons and cylinder heads of the V6 are fabricated from aluminum whereas the crankshaft, connecting rods and valves are built from particular solid steel.
The technology within the new engine generation contains a lot of new developments which can be distinctive in combination:
* Multi-spark ignition and third-era spray-guided direct fuel injection system with piezo-electric injectors that supply extra gas savings by a homogenous combustion course of with a considerably prolonged characteristic map and fuel-environment friendly lean-burn technology.
* Energy consumption by auxiliary items has been reduced. These embrace an optimized water pump with 2nd-generation thermal administration, a requirement-controlled oil pump, a volume-controlled high-stress gasoline pump and an clever generator administration system.
Light-weight building strategies and detailed improvements have also lowered in-engine friction significantly compared to the earlier engine.
Third-generation direct-injection system
Spray-guided direct gasoline injection (which Mercedes-Benz was the primary automobile producer to introduce in sequence production) is now in its third generation. The system stress is up to 2,901 psi and is variably optimized in response to the engine's performance. New piezo-electrical injectors permit up to five injections per intake stroke for the very best mixture formation.
The crystalline construction of the piezo-ceramic adjustments in microseconds under an electrical voltage and with the precision of just a few thousandths of a millimeter. The central part of a piezo-electric injector is the piezo-stack, which immediately controls the metering needle. With a response time of simply 0.1 milliseconds, the fuel injection will be very sensitively and precisely adjusted to the present load and engine pace, with a helpful impact on emissions, fuel consumption and combustion noise.
Within the V6 motor, the multiple injections even in tiny quantities made attainable with piezo-electric injection know-how were used by Mercedes-Benz engineers to manage a wider, usable combustion process with environment friendly lean-burn operation.
Multi-spark ignition for optimal effectivity
The third-generation direct injection system additionally features fast multi-spark ignition (MSI). Following the first spark discharge and a quick combustion interval, the coil is quickly recharged and a second spark is discharged. The MSI system permits up to 4 sparks to be discharged in fast succession inside one millisecond, making a plasma with a larger spatial enlargement than typical ignition. Controlling this fast multi-spark ignition permits each the time lapse earlier than the following spark and the combustion period to be optimally adjusted. This offers versatility in optimizing the middle of combustion and bettering residual fuel compatibility, especially throughout stratified cost operation. Gas consumption could be reduced by roughly two percent this way.
Fuel savings of as much as four percent are doable alone by way of piezo-electric injection technology together with multi-spark ignition, relying on the driving cycle.
Cylinder head with new camshaft adjuster
Mercedes-Benz engineers modified the variable, hydraulic vane-type camshaft adjusters for the consumption and exhaust sides through the use of the essential architecture of the preceding engine. These now have a bigger adjustment range of forty degrees with reference to the crankshaft. Engineers have been also capable of improve the performance, reaching a 35 percent larger adjustment speed and adjustability at an oil strain as little as 5.8 psi. Despite the improved efficiency, this new part features considerably smaller dimensions and low weight. For this reason the set up house on the longitudinal and vertical axes of the engine was capable of be diminished by round 0.6 inches.
Two-stage chain drive for low noise
The acute compactness of the camshaft adjusters was achieved by the new, two-stage chain drive. A main chain drives two secondary chains - one per cylinder bank -through an intermediate gear. All three chains can be individually adjusted through a series tensioner. This leads to low tensioning forces and low chain dynamics, making certain consistent timing and outstanding acoustic properties, with friction diminished even further. In brief, the brand new chain drive is compact and offers low-noise operation.
Exhaust system for stringent emission standards
The exhaust methods for the SLK have been developed to satisfy the ULEV exhaust emission standards as well as noise emission standards. The exhaust system for the 4-cylinder engine consists of a firewall catalytic converter, a center muffler and two rear mufflers.
The emission control system for the V6 gasoline engine has a firewall catalytic converter for the precise and left cylinder banks. The exhaust gases then movement into storage-sort NOx catalytic converters. These are adopted by a twin-pipe middle muffler and rear mufflers designed as reflection/absorption mufflers on the left and proper and rounded-off by two exhaust tailpipes.
Four-cylinder with a bite
The 4-cylinder engine for the new SLK250 follows the downsizing precept with the decreased cubic capability compensated by homogeneous direct injection and turbocharging. This results in benefits similar to lower weight and diminished engine friction. A smaller engine also moves the operating vary of the combustion process in the direction of more favorable situations with consequent gas consumption improvements.
The direct injection system of the four-cylinder engine has an injection stress of up to 2,031 psi. In the interests of improved effectivity, this allows the compression ratio to be increased versus a standard port injection system. The gasoline evaporating directly in the combustion chamber also lowers the temperature within the combustion chamber, lowering the engine's tendency to knock. The engine is homogeneously charged.
Turbine rotors are used to generate charge pressure within the 4-cylinder engine. The one-flow turbocharging of the 4-cylinder engine operates extra efficiently than a mechanical charger since no engine power must be dedicated to the rotors.
Different traits of the four-cylinder engine embrace 4-valve arrangement with solid intake and exhaust camshafts, as well as camshaft adjustment on the vane-cell principle. This allows the valve timing to be rapidly and variably adjusted. The result's excessive torque even at low engine speeds, and a better specific output.
The crankcase and cylinder head are solid from aluminum alloy. The crankshaft can also be cast, and has eight counterweights. To compensate the secondary lots inherent to a 4-cylinder in-line engine, two Lanchester balancer shafts rotate inside the crankcase at twice the crankshaft speed.
An electronically managed thermostat provides managed engine heat-up (no coolant flows through the cylinder head when the engine is chilly), and subsequently clever thermal management and shortened heat-up phase.
Sporty exhaust note
A sporty exhaust be aware produced by a brand new sound generator offers an acoustic backdrop to the 4-cylinder SLK250. This generator is located immediately in front of the throttle flap, and enhances the exhaust observe with parts of the intake noise. It filters out certain frequencies from the intake noise and conducts them into the automobile interior via a pipe connection - an ingeniously easy and really effective resolution for a sporty and appealing engine sound.
Computerized transmission with gasoline economy benefits
The improved seven-speed automated transmission is normal tools for the Mercedes-Benz SLK350 (optionally available on the SLK250). The transmission has undergone in depth further growth to achieve decreased torque converter slip, a big discount in internal losses and optimized efficiency. Mercedes-Benz builders decreased vibration in the transmission by incorporating a brand new torsion damper which makes low velocity operation more comfortable.
ECO mode reduces engine speeds and considerably improves fuel economy (as much as seven percent) but in addition gives an excellent quicker response to accelerator movements. A new hydraulic circuit and optimized torque converter mapping also contribute to raised acceleration. Further gasoline financial system measures include a brand new transmission fluid with a decrease viscosity and longer service life.
The optimized electrohydraulic control unit of the transmission and new lowered-friction materials in varied parts of the transmission together with optimized software result in improved shifting comfort.
The closest connection to the street
It is the suspension that establishes contact with the highway, and ride comfort and agile handling rely on it. The brand new Mercedes-Benz SLK offers a choice of two versions:
* A lowered sports suspension with tougher springs and dampers ensures a systematically sporty driving expertise
* An optionally available Dynamic Dealing with bundle is accessible as a particular order option. Its deserves include a suspension with steady adjustable damping. It has an electronically managed totally computerized damping system, so the car rolls away gently even on poor road surfaces, but nonetheless offers excessive driving dynamics
Wheel location is similar for all three suspension variants: a three-link suspension locates the wheels on the entrance, whereas at the rear that is finished by a multi-hyperlink unbiased suspension which has already impressively demonstrated its unrivalled wheel location qualities in the preceding model. Within the new SLK this has forged aluminum hub carriers, to be able to scale back unsprung masses even additional for even better handling. All fashions within the new SLK-Class even have a torsion bar stabilizer, which is attached on to the body.
The sports suspension has a stiffer damper setup, shorter suspension springs and torsion bar stabilizers with a larger cross-section. The suspension is also lowered by 0.39 inches. The roll management system has been strengthened to realize even smaller roll angles when cornering at speed.
Suspension with automated, repeatedly adjustable damping
The suspension with automated, constantly adjustable damping, which is included within the non-compulsory Dynamic Handling package, sets new standards. It permits sporty and agile dealing with for optimum driving pleasure on winding nation roads. An digital system mechanically and constantly ensures that the dampers are always set to swimsuit the driving situation. The response time is generally solely round 10 milliseconds.
Setting the fundamental characteristics of the suspension remains to be left to the driver, nevertheless, using a switch that permits him to choose comfortable or sporty damping characteristics. At the touch of a button he therefore has a suspension setup accessible which provides sport or consolation settings. If he chooses the sport setting, he's choosing a driving experience with a really high degree of dynamic response.
Like the sports activities suspension, the suspension with variable damping is supplied with torsion bars with a larger cross-section, and the suspension is lowered by 0.39 inches.
Brakes for sporty driving enjoyment
The confirmed, dual-circuit hydraulic braking system and the distribution of the 2 circuits to the front and rear axles has been adopted from the previous model. All variants are outfitted with single-piston floating caliper brakes in any respect corners.
The brake covers on the entrance axle were optimized in the wind tunnel for much more efficient cooling of the brakes and wheel bearings, and to guard the brake discs from road debris.
Electric parking brake
The electrically operated parking brake within the new SLK helps within the design of a beneficiant interior. Its swap is positioned within the dashboard, below the rotary light switch. Urgent it engages the electrical parking brake, and pulling releases it. In models with an automated transmission the brake is launched routinely as quickly because the engine is working, the transmission is within the D or R place, the motive force has a fixed seat belt and the accelerator is pressed.
Direct and comfy - the steering of the SLK
The 2012 SLK-Class features the hydraulically assisted Direct-Steer system which will increase the agility and controllability of the SLK and improves steering comfort when parking as less effort is required. It combines these attributes with predictable and safe steering characteristics at high speeds. Because of this, the agile roadster corners much more willingly and precisely, permits relaxed cruising on motorways and makes for much more exhilarating driving pleasure.
The new Direct-Steer system was developed from the acquainted speed-sensitive steering that Mercedes-Benz provides for many of its models. With this technique, the steering effort is determined by the car pace - the trouble required increases with the speed. In apply, this means more steering consolation throughout parking maneuvers and extra security at greater speeds, for instance on highways, the place a larger steering effort ensures safe straight-line stability.
The brand new Direct-Steer system retains these constructive attributes of velocity-delicate steering and provides a variable steering ratio that adjustments based on the steering angle. The ratio is indirect when the steering is centered, which ensures good straight-line stability and subsequently a excessive degree of safety. In distinction to different variable steering techniques, the ratio of the Direct-Steer system increases quickly after a steering angle of 5 levels, becoming extremely direct from a steering angle of just 100 degrees. Solely relatively small steering movements are then wanted to make course corrections.
Throughout city driving the driver needs to carry out less pronounced steering movements, making quick adjustments in course doable with much less effort. The Direct-Steer system is much more spectacular on winding nation roads, the place only small steering actions are adequate to steer the vehicle. Even on tighter bends, the motive force's arms hardly want to change their grip on the steering wheel. Speedy sequences of bends can be mastered nearly intuitively, safely, exactly and enjoyably.
Despite its remarkable efficiency, the important thing element of the Direct-Steer system is just a steering rack. Its secret lies within the enamel minimize into it: in the center these enamel are barely wave-formed, with various facet profiles. Further outward the tooth are spaced at varying distances aside so the change in steering ratio is produced by purely mechanical means. With this answer, Mercedes engineers have been in a position to dispense with the advanced actuators and sensor programs used by other variable steering systems. The advantages include very low complexity and weight. The system always responds predictably and consistently whereas other variable steering programs typically require fast adaptation by the driver in rapidly changing situations.
ECO steering servo pump lowers gasoline consumption
Driving straight ahead within the new SLK additionally means saving fuel. This is ensured by an ECO steering servo pump as commonplace in all SLK models. Its centerpiece is an electrically actuated proportional solenoid valve which variably opens a bypass aperture on the stress connection to feed the steering gear with just the correct amount of fluid. As the steering has a lower vitality requirement when driving straight forward, the stress within the steering system could be minimized and fewer power is consumed.
Superior security technology
The 2012 Mercedes-Benz SLK sets new security requirements in the roadster segment. The security specialists have lengthy adhered to the motto, "One of the best or nothing", coined by Gottlieb Daimler. Removed from being satisfied with attaining ranking targets, they work intensively on attaining a level of security which far exceeds the standards required by the world's legislators. Crucial measure of their work just isn't the laboratory or crash test facility, but actual, real-life accidents. They name the outcomes of their work Actual Life Safety, an idea which is based on analysis into thousands of accidents. Using this irrefutable proof, the Mercedes-Benz engineers have developed or initiated most of the help systems which right now successfully support drivers and have been adopted by lots of the company's competitors.
ATTENTION ASSIST and ADAPTIVE BRAKE as standard
The brand new SLK additionally incorporates a distinctive mixture of driver assistance techniques which help to keep away from accidents, together with the drowsiness detection system ATTENTION ASSIST. Thanks to this system, the roadster develops a exact feeling for the level of attentiveness of the motive force and may present an early warning of overtiredness.
Different standard gear includes the ADAPTIVE BRAKE which consists of ABS, the acceleration skid management system ASR and also energetic yaw control (GMR). In addition, it options the next capabilities:
* supports the driving force when accelerating uphill from a standstill, by stopping the vehicle from unintentionally rolling backwards;
* keeps the car stationary with out having to maintain the brakes applied continuously - for instance when waiting at traffic lights (HOLD function);
* as soon as the motive force abruptly steps off the accelerator, it brings the brake pads into gentle contact with the brake discs as a precautionary measure, in order that the necessary braking strain might be attained quicker in the occasion of emergency braking;
* in moist situations it applies gentle brake contact, with out the driver even noticing, to dry the brake discs.
Safety and comfort
Those wishing to take action can extend the vary of assistance techniques in the new SLK even further with the addition of features enhancing both security and luxury:
* The Lighting Package deal provides further lighting capabilities (energetic curve illumination and cornering gentle operate), that are activated relying on the driving situations
* The elective PARKTRONIC with Parking Guidance helps the driver when parking. Its ultrasonic sensors measure the size of parking areas as the automotive drives past; the cockpit show then gives a schematic representation of the advisable parking maneuver.
Considering all of the requirements of the rating institutes
In developing the brand new SLK, the requirements of Euro NCAP as well as all of the global shopper scores have been taken into account. This has contributed to the development of the bodyshell structure of the automobile, which follows established ideas and has been optimized in plenty of detailed areas. These include, amongst other things, reinforced members, a new facet affect construction and new fiber-strengthened roll-over bar.
In the occasion of an accident, up-front sensors and lateral satellite tv for pc and roll-over sensors assist the central control unit to foretell the nature and severity of the accident. New, extra stress sensors in the doorways as well as acceleration sensors within the entrance bumper help in detecting an affect with a pedestrian.
New headbag and crash-responsive head restraints
The restraint techniques with two-stage driver and entrance passenger airbags have additionally been enhanced. A new function is the headbag, which provides generous lateral protection for the head impact area. An additional thorax airbag within the seat backrest protects the upper body within the event of a facet impact. Each the driver and passenger are provided knee airbags as well. The seat belts, with belt buckle tensioners and velocity-sensitive belt power limiters, serve to highlight the high safety requirements of Mercedes-Benz.
One other new function finding its manner into the usual equipment of the 2012 SLK comes in the form of the NECK-PRO crash-responsive head restraints, developed by Mercedes-Benz. They support the motive force's and passenger's heads within the event of a rear impact and scale back the chance of whiplash.
An intuitive companion
A radio and other entertainment media are a given in right this moment's autos, digital navigation systems are nearly as frequent, and prospects demand to integrate a mobile phone simply into the onboard network. To meet these necessities in the absolute best means, Mercedes-Benz has equipped the new SLK with newest-era telematics.
The sophistication of the pinnacle unit is straight away apparent from the large shade display. This monitor is positioned within the upper section of the center console, so that the driving force is able to see the data supplied without taking his eyes absolutely off the road. It can also be easily seen by the passenger.
The top items share a typical interface often known as the "central controller". Within the pursuits of relaxed and ergonomical operation, it's situated inside straightforward reach in front of the middle armrest. This extremely subtle, steel rotary/pressure management might be moved in eight directions, and can also activate or verify further functions by rotating or urgent it. Navigating by means of the main menus and sub-menus is easy and thanks to new consumer-friendly logic the system is shortly and intuitively mastered.
The head units are connected to eight loudspeakers and have pace-sensitive quantity control from 12 mph, which will increase the radio volume with the car speed. All of the units are additionally protected in opposition to theft by digital project to the particular vehicle.
Audio 20
The fundamental Audio 20 radio is combined with a large TFT shade display with a display screen diagonal of 5.8 inches and a decision of four hundred x 240 pixels as a head unit. Audio 20 options:
* built-in AM/FM tuner,
* audio amplifier with 4x25 watts
* MP3-succesful CD player and AUX connection in the glove compartment
* Bluetooth interface for palms-free calling
* Bluetooth audio streaming
COMAND System
Optionally accessible is the COMAND head unit featuring the voice-operated Voice Management system. The display screen for this unit is a high-decision TFT color display with a 7-inch display able to representing 800 x 480 pixels.
10 GB of storage for compressed audio files (mp3, wma and aac codecs) is now included. COMAND also features a 6-disc CD/DVD changer.
The Music Search operate allows drivers and passengers to go looking the exhausting disc, SD reminiscence playing cards, USB sticks, CDs and DVDs for specific music tracks and artists. The search may be in response to numerous standards, for example album, music class or composer.
The quick arduous-disc navigation system of COMAND additionally has new options corresponding to 3D city views and recording of drive routes which could be recalled later. The driving force also can set specific private locations through an SD card and four different routes can be displayed on the navigation map, considered one of them a cheap variation. COMAND also includes a voice-operated management system for audio, telephone and navigation with handy whole-phrase recognition.
Sound system - putting the fitting be aware
Audiophiles are in a position to decide on the non-obligatory Premium 1 Package deal that includes Harman/Kardon® surround sound system. This features an extra MOST amplifier with DSP and an output of eight x 50 watts plus ten high-quality, high-efficiency loudspeakers. All the amplifier channels of the sound system are outfitted with frequency compensation individually suited to the car acoustics. Bass, treble, volume, stability and fader will be individually adjusted.
Telephony - reachable at any time
Both the Audio 20 radio and the COMAND system have an integrated Bluetooth palms-free system for cellular phones. The hands-free system can be operated through the multifunction steering wheel or the keys on the pinnacle unit. Bluetooth can be used to switch contact information from a cell phone to the pinnacle unit.
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