MerecedesBenz 4MATIC compact class family allwheel drive for…

1 Фев 2015 | Author: | No comments yet »
Mercedes-Benz CLA 250 AT 4MATIC Special Series

Merecedes-Benz 4MATIC compact family, all-wheel drive for all

. The 4×4 family from currently comprises more 60 models. This means a 4×4 technology

The 4×4 from Mercedes-Benz currently more than 60 models.

means that a 4×4 solution tailored to the respective class is always available the new compact class model and the vehicles of the C, E, S, CLS and CL-Class, through to the range of SUVs and cross-country that make up the GLA, M, GL and G-Class ranges.


Features to all include high reserves of and outstanding agility, along optimum handling safety and efficiency.

At this year’s Workshop taking place in the conditions of Hochgurgl, Austria, the is squarely on the compact class family. The A, B and CLA-Class are now all optionally with the new generation of the 4MATIC all-wheel-drive system featuring variable torque distribution. In from March 2014 the new GLA be joining the Mercedes-Benz SUV model

The most innovative components of the new include the power take-off to the axle, which is integrated the 7G-DCT automated dual transmission, and the rear-axle gear with integrated, hydraulically multi-disc clutch. This allows fully variable of the drive torque between the and rear axles.

Additional of this design are a lower weight compared with the and also high efficiency. As their front-wheel-drive counterparts, all models also boast energy efficiency.

Integrated take-off unit (PTU) power to the rear axle

The new is combined with the 7G-DCT automated dual clutch The power flow to the rear train is provided by a compact take-off unit (PTU) is fully integrated into the transmission and is supplied with from the latter’s oil circuit.

configuration gives rise to weight advantages over systems that branch off by means of an add-on component its own oil circuit. In conjunction with the tapered roller bearings, the PTU achieves an excellent level of

The low system weight of the 4MATIC is not attributable solely to the PTU. weight-stripping measures include a rear-axle gear unit, hardened, weight-optimised rear-axle shafts and weight-optimised drive The system weight of this is up to 25 percent lower than in the versions offered by the competition.

The drive shaft is vibrationally An axially moving joint at the compensates for longitudinal movements of the transmission unit, while an flexible coupling reduces the of high-frequency gearing vibrations at the gear unit. To minimise loads, the drive shaft is with an extendable element.

new development with torque-on-demand axle

The hydraulically actuated clutch integrated into the gear unit is responsible for variable torque distribution. operating principle: when the clutch is open, the car is driven by the front axle. When the is closed, the rear axle into play. However, the torque can be shifted in fully mode between front and axle according to the given (torque on demand).

The system to activate the rear axle is in milliseconds by the gerotor pump is integrated into the rear-axle unit. The pump is activated as soon as only minimal differences arise between and rear axles, and pressure and therefore torque control to the axle is performed by means of a valve integrated into the axle.

Motoring enjoyment to intelligent control systems

The is activated according to the basic of as often as necessary, as rarely as This means that the underlying conditions allow, the compact models run in particularly front-wheel-drive mode. As soon as the situation requires, drive is channelled to the rear axle as

The reverse process takes just as quickly: as soon as drive torque is no longer at the rear axle e.g. in of heavy braking manoeuvres ABS intervention the rear drive is deactivated and torque is reduced to

In case of impending understeer or under load, the drive is first of all distributed in such a way as to the vehicle. Only if these fail to have a stabilising do the control systems adapted to the of 4MATIC, such as ESP® or intervene and keep the vehicle on

With this strategy, the have managed to combine two key defined in the performance specifications: energy efficiency coupled maximum dynamic handling and safety.

Individual: transmission to suit personal driving

The torque distribution is also on the activated shift program of the dual clutch transmission. The ECO results in torque distribution of a conservative nature. Less is channelled to the rear axle, in gentler handling and supporting an driving style at lower

In SPORT or MANUAL mode the times are shortened and more is distributed to the rear axle in the of a dynamic, sporty driving GLA models with 4MATIC an off-road transmission mode as In this mode, the shift and accelerator characteristics are also in such a way that the requirements for on light off-road terrain and on loose surfaces can be met.

On the AMG of the A and CLA-Class, adaptation of the 4MATIC system takes place in with the 3-stage ESP®.

The of a new generation: the Mercedes-Benz A-Class

the new A-Class, Mercedes-Benz has opened up a new in the compact segment: markedly in design, dynamic, highly and with a best in class Cd of 0.27 (0.26 in the case of the Edition). At the same time it that for Mercedes-Benz, safety is not a of price the standard specification the radar-based COLLISION PREVENTION system, for example.

Since the of 2013 the model range has supplemented with the addition of the A 250 Its four-cylinder engine with a of 1991 cc produces 155 kW (211 hp) and 350 Nm of peak torque between and 4000 rpm. Performance is at car level, with acceleration zero to 100 km/h in 7.1 seconds and a top of 230 km/h.

High performance in form: the A 45 AMG

The A 45 AMG offers an exciting introduction to the of AMG. Mercedes-AMG has added sporty and muscular highlights to the appealing exterior design of the new A-Class with its new dynamic sculptural character and feature along the sides.

With an of 265 kW (360 hp) and a peak torque of 450 Nm, the AMG turbo engine is the world’s powerful four-cylinder engine in production. The A 45 AMG comes with performance-oriented AMG 4MATIC all-wheel as standard.

The AMG SPEEDSHIFT DCT 7-speed transmission features seven three distinct transmission a double-declutching function dependent on the mode and a RACE START for optimum acceleration. Like AMG high-performance car, the A 45 AMG incorporates axle technology.

For enhanced handling, the McPherson front is fitted with stiffer knuckles and new elastokinematics.

The 4MATIC of the A-Class at a glance:

The sports the Mercedes-Benz B-Class

The second of the B-Class car has heralded a new compact era at Mercedes-Benz in terms of both and technology. The new B-Class is a typical sports tourer, offering of space combined with dynamic performance in hatchback form.

The B-Class features the collision warning system PREVENTION ASSIST with Brake Assist as standard, lowers the risk of a rear-end

An outstanding drag coefficient of Cd = (BlueEFFICIENCY Edition: 0.24) the B-Class at the forefront of its market Apart from the aerodynamic design, numerous optimisation on points of detail such as the air around the front wheels, the design and the cooling air flow are crucial factors contributing to excellent aerodynamic performance.

In 2013, the first B-Class all-wheel drive was launched in the of the B 220 4MATIC and at the same time the most cost-effective all-wheel Mercedes-Benz.

The specifications at a glance:

as they come: the Mercedes-Benz

With world-leading aerodynamics (Cd of for the BlueEFFICIENCY Edition), avant-garde design and optional 4MATIC drive, the CLA is all set to establish a new segment. As a four-door coupé it follows the of the CLS, whose design has spawned more than its share of imitators since its in 2003.

The CLA also comes as standard a radar-based braking system PREVENTION ASSIST), which is to warn the driver of an obstacle a speed of 7 km/h and to initiate braking when the driver on the brake pedal.

The CLA 250 4MATIC 155 kW (211 hp) features 4MATIC fully variable torque It accelerates to 100 km/h from a start in 6.6 seconds and has a top speed of 240 On average it consumes just 6.4 km, which corresponds to a CO2 level of 151

Since October the CLA 250 Sport has available to order as a sporty, by AMG series-production model. With its engine and transmission configuration as as an adapted ESP®set-up, the CLA 250 Sport promises a very special experience, which is enhanced by the emotion-stirring sound produced by the exhaust system.

Red detailing on the AMG and rear aprons serves to underline this model’s positioning. The highlighting effect is through into the interior designo seat belts in

Mercedes-Benz CLA 250 AT 4MATIC Special Series

Performance down to the smallest the CLA 45 AMG 4MATIC

The CLA 45 AMG 4MATIC follows the of the CLS 63 AMG the trendsetting four-door high-performance Just one glimpse of the high-tech confirms that the four-door also boasts the typical DNA and is the embodiment of the AMG brand promise of Performance:

With a maximum of 265 kW (360 hp) and a peak torque of 450 Nm, it not boasts the world’s most series production four-cylinder At the same time the turbocharged is also exceptionally efficient and the requirements of the EU6 emissions standard.

The models of the CLA-Class at a glance:

2014: the new Mercedes-Benz GLA-Class

in design, serene in day-to-day and with good off-road a wanderer between automotive the Mercedes-Benz GLA reinterprets the compact SUV in convincing style. It lightfootedly all day-to-day challenges and is also enough for off-road excursions.

The new GLA is available to order from 29 and arrives in dealerships in 2014. the GLA, yet another model is set to become the leader in its segment respect to aerodynamic efficiency. It has a Cd of 0.29.

As the first Mercedes the GLA is available as an option with the new of 4MATIC permanent all-wheel with fully variable distribution. Models with are equipped with DSR (Downhill Regulation) and an off-road transmission as standard.

DSR is activated by a control in the centre console, and assists the on demanding downhill stretches by a slow, manually selected speed as far as the physical limits when negotiating downhill This is done with the of the engine and transmission control and by specific braking intervention.

the off-road transmission mode is using the transmission mode the shift points and accelerator are modified so that the requirements for on light off-road terrain, and on loose surfaces, can be met. In with the Audio 20 CD (standard) and Online (optional extra), the unit can also be switched to an display.

The steering angle, the off-road transmission mode and a are displayed there. The roll in degrees, the gradient in percent and of Downhill Speed Regulation DSR are indicated. Broader and brighter of the route is provided by the Off-road function (in conjunction with Light System).

As part of the bi-xenon headlamps swivel by 6 degrees, a symmetrical light is set and the lighting output is increased.

The models of the new GLA-Class at a glance:

the best all-wheel drive is no for winter tyres

Like any all-wheel drive system, the versions have to abide by the of driving physics. The fundamental is that a tyre is only to transfer a certain level of force to the road surface. If a high degree of longitudinal is required during acceleration or for example, the available lateral is reduced.

When cornering, the reverse now a large amount of lateral is required to keep the vehicle on while the longitudinal force is restricted. The engineers’ skill in the drive mechanism and fine-tuning the systems lies in their to exploit these correlations in a way as to ensure the best possible characteristics under all conditions.

The coefficient µ describes the grip between the tyres and the This figure is high on a dry (µ = 0.9) and low on a snow-covered (µ = 0.3).

Despite all the efforts, it is ultimately drivers who determine how safe they are out on the They should always their driving style in with the prevailing wintry and ensure that their is suitably equipped; winter are absolutely essential here.

A story: the new generation of compact

The Mercedes-Benz … in the premium segment continues: The Frankfurt Show saw the presentation of the GLA as an impressive of the compact SUV segment.

The GLA is the fourth of new models that mark a expansion of the brand’s product designed to appeal to new customer As an example, the conquest rate of the new in Europe is at about 50 percent, and the age of the customers is 10 years lower with the predecessor model.

The new new A-Class and the four-door CLA compact already have a strong on the roads. Demand for these continues to be very high: January through to October alone, no fewer than vehicles from the A and B-Class and new CLA were delivered (+68.8%). momentum is expected in the months with continuously rising in further markets.

— Zanker, photos Mercedes

/ MaP

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