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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 to the world of AMG. Mercedes-AMG has emphatically sporty and muscular to the emotionally appealing exterior of the new Mercedes-Benz A-Class with its new style, sculptural character and lines along the sides.

With an output of 265 kW (360 hp) and a torque of 450 Nm, the AMG 2.0-litre turbo is the world’s most powerful engine in series production. The A 45 AMG with variable, performance-oriented AMG all-wheel drive as standard.

The AMG DCT 7-speed sports transmission seven gears, three transmission modes, a double-declutching dependent on the transmission mode and a START function for optimum Like every AMG high-performance the A 45 AMG incorporates sophisticated axle

For enhanced dynamic handling, the front axle is fitted stiffer steering knuckles and new

The 4MATIC models of the A-Class at a

The sports tourer: the Mercedes-Benz

The second generation of the B-Class car has a new compact class era at Mercedes-Benz in of both design and technology. The new is a typical Mercedes sports offering plenty of space with impressive dynamic in hatchback saloon form.

The features the radar-based collision system COLLISION PREVENTION with adaptive Brake as standard, which lowers the of a rear-end collision.

An outstanding coefficient of Cd = 0.26 (BlueEFFICIENCY 0.24) places the B-Class at the of its market segment. Apart the aerodynamic exterior design, optimisation measures on points of such as the air flow around the wheels, the underbody design and the air flow are also crucial contributing to this excellent performance.

In September 2013, the B-Class with all-wheel was launched in the guise of the B 220 4MATIC and at the time became the most all-wheel drive Mercedes-Benz.

The at a glance:

Sleek as they the Mercedes-Benz CLA-Class

With aerodynamics (Cd of 0.22 for the BlueEFFICIENCY avant-garde coupé design and 4MATIC all-wheel drive, the CLA is all set to a new segment. As a compact four-door it follows the idea of the CLS, design concept has spawned than its fair share of since its debut 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 to order from 29 November, and in dealerships in 2014. With the yet another model series is set to the leader in its segment with to aerodynamic efficiency. It has a Cd value of

As the first Mercedes SUV, the GLA is as an option with the new generation of permanent all-wheel drive fully variable torque Models with 4MATIC are with DSR (Downhill Speed and an off-road transmission mode as

DSR is activated by a control button in the console, and assists the driver on downhill stretches by maintaining a manually selected vehicle as far as the physical limits allow negotiating downhill gradients. is done with the help of the and transmission control systems, and by braking intervention.

When the transmission mode is selected the transmission mode switch, the points and accelerator characteristics are so that the requirements for driving on off-road terrain, and particularly on surfaces, can be met. In combination the Audio 20 CD (standard) and COMAND (optional extra), the head can also be switched to an OnOffroad

The steering angle, the selected transmission mode and a compass are there. The roll angle in the gradient in percent and activation of Speed Regulation DSR are also Broader and brighter illumination of the is provided by the Off-road Light (in conjunction with Intelligent System).

As part of this, the headlamps swivel outwards by 6 a symmetrical light distribution is set and the output is increased.

The 4MATIC of the new GLA-Class at a glance:

Even the all-wheel drive is no substitute for tyres

Like any other drive system, the 4MATIC have to abide by the laws of physics. The fundamental rule is a tyre is only able to a certain level of overall to the road surface. If a particularly degree of longitudinal force is during acceleration or braking, for the available lateral force is

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 frictional coefficient µ the physical grip between the and the ground. This figure is on a dry road (µ = 0.9) and low on a road (µ = 0.3).

all the engineers’ efforts, it is ultimately themselves who determine how safe are out on the road. They should adapt their driving in accordance with the prevailing conditions and ensure that vehicle is suitably equipped; tyres are absolutely essential

A success story: the new generation of cars

The Mercedes-Benz attack in the compact segment continues: The Motor Show saw the presentation of the GLA as an reinterpretation of the compact SUV segment.

The GLA is the of five new models that a significant expansion of the brand’s portfolio designed to appeal to new groups. As an example, the conquest of the new A-Class in Europe is at about 50 and the average age of the customers is 10 years than with the predecessor

The new B-Class, new A-Class and the four-door CLA coupé already have a presence on the roads. Demand for models continues to be very from January through to 2013 alone, no fewer 303,599 vehicles from the A and and new CLA Coupé were delivered Further momentum is expected in the ahead with continuously availability in further markets.

Wolfgang Zanker, photos

05.12.2013 / MaP

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