Visibility and safety gl

Visibility and safety gl

In developing the active and passive safety of the new GL-Class, Mercedes-Benz is guided by the findings of the company's own accident research, which began more than 60 years ago and has played a decisive role in the constant evolution of automotive safety. In addition to this wealth of experience, detailed simulations and extensive test series flow into the development and are implemented in concrete protective measures. The occupant protection systems, together with the "electronic crumple zones" of the assistance systems, result in. The intelligent body design the highest possible protection potential. The front structure can absorb impact energy in a frontal crash. To mitigate the stress peaks of the occupants. The front structure is essentially formed by two straight front longitudinal members, a second upper longitudinal member level and a subframe supporting the drive unit, which connects the two halves of the structure and can deform under heavy frontal loading. The cross-connections in the front end ensure that the side facing away from the impact is activated in the event of staggered frontal collisions. A long stem length, short V-engines, and the PTO shaft equipped with a deformation element also contribute to the potential for deformation in the stem area. The wheels support themselves against the sturdy front wall in case of large deformations. Above the pedal floor, the bulkhead is reinforced by an external cross member that is supported by the A-pillars. The strength of the passenger compartment is matched to the deformation resistance of the stem structure. Surrounds passengers in all seven seats like a protective cocoon. The extraordinary rigidity and strength are ensured, among other things, by the floor system with separate center tunnel and side longitudinal members belonging to the side wall, which form a stable supporting structure with the cross members placed on the floor. High-strength sidewall bracing includes body pillars, side roof frame and side stringers. The outer shell of the sidewall assembly is formed by the one-piece outer planking. The inner shells are partly composed of several components with large-scale nodal connections between columns, roof frames and lateral longitudinal beams. The double-skinned A-pillar with ultra-high-strength internal reinforcement is stabilized in the transverse direction by the front roof frame and various cross-members. These are located in the area below the windshield, above the pedal floor and under the instrument panel. There is also an effective protection concept for the rear impact. Large deformation paths due to box-shaped rear side members, the positioning of the fuel tank in front of the rear axle and the filler neck above the rear axle enable a high energy absorption capacity in rear collisions. The GL-Class also offers the highest possible protection potential with regard to weaker road users such as pedestrians or two-wheeled cyclists. In addition to the compliant areas of the front end, the folding exterior mirrors and the smooth contours, the risk of injury to the vehicle has been reduced by adapting the hood and increasing the distance to the components in the engine compartment. In addition, an active engine hood is used as a standard feature. It can reduce possible injuries to a colliding pedestrian or two-wheeler rider and increases the deformation space. To better determine the triggering criteria, an additional acceleration sensor system was integrated in the front bumper. New crash requirements are confidently met by the GL class
In the development of the GL class, internal test requirements and test criteria for accident tests were applied that go far beyond the legal requirement profile. Therefore, the GL could easily pass much more stringent requirements of the most important international testing organizations: – Frontal collisions: New frontal collision with full overlap according to US-NCAP (US New Car Assessment Program)

– Side collisions: New pole impact according to Euro-NCAP (European New Car Assessment Program)

– New side impact according to US NCAP

– Roof resistance: New roof resistance test according to IIHS (Insurance Institute for Highway Safety)

– Pedestrian protection: impact tests according to current Euro-NCAP

With its comprehensive protection concept, the GL-Class has the potential to score outstandingly in all international crash ratings. Assistance systems act as an "electronic crumple zone"
Numerous assistance systems, which can act as an "electronic crumple zone" to prevent accidents, are the primary means of further improving driving and condition safety in the new GL-Class. In addition to the ESP® and 4ETS driving dynamics control systems, the GL-Class also features the ADAPTIVE BRAKE electronic brake control system as standard, which improves traction, driving safety and ease of operation. The ADAPTIVE BRAKE electronic brake control system includes the basic functions of anti-lock braking system (ABS). Traction control (ASR) and yaw moment control (GMR). ABS and ASR primarily record and influence the longitudinal dynamic driving state, while GMR influences the lateral dynamic driving state. In the event of detected critical driving conditions, traction and driving stability are maintained or restored within the bounds of physical possibilities by means of wheel-selective braking interventions and influencing the engine management system. In addition, ADAPTIVE BRAKE communicates with all assistance systems and also includes the following functions, which come as standard: – Brake Assist BAS


– Trailer stabilization

– Downhill Speed Regulation DSR

– Cruise Control

– Tire pressure loss warning

– HOLD, hill start assist, pre-fill and dry brakes.

SUV premiere of the COLLISION PREVENTION ASSIST collision warning system in the GL-Class. The ATTENTION ASSIST drowsiness detection system. The steering assist is also on board at no extra charge. On request, additional systems such as DISTRONIC PLUS proximity control, BAS PLUS brake assist or PRE-SAFE® braking with autonomous braking function optimize safety in certain hazardous situations not recognized by the driver. Optionally, the Active Lane Keeping and Blind Spot Assist or the Speed Limit Assist are available. Nearly half of all rear-end collisions can be avoided with the help of radar-based safety systems such as collision warning. Adaptive Brake Assist can be avoided or their accident severity reduced. This is the result of detailed analyses by Mercedes-Benz Accident Research. The experience gained with the Mercedes innovations DISTRONIC PLUS and BAS PLUS was incorporated here. The GL-Class is the first SUV to be equipped with such a system: the COLLISION PREVENTION ASSIST*. Unlike conventional systems, the new Brake Assist is not a purely urban system designed to minimize minor damage. In fact, the innovative solution aims to protect against typical rear-end collisions in all traffic situations. The company expects the collision warning system to have a significant positive impact on statistical accident occurrence. Test results support this assessment: In tests with drivers in a driving simulator, the accident rate fell from 44 to eleven percent in three typical situations thanks to COLLISION PREVENTION ASSIST. *country-specific standard equipment

COLLISION PREVENTION ASSIST warns the driver, who may be distracted, visually and acoustically of any obstacles detected and prepares the braking assistant to apply the brakes as precisely as possible. This is initiated as soon as the driver depresses the brake pedal. The system also meets the essential "Forward Collision Warning" requirements of the U.S. National Highway Traffic Safety Administration (NHTSA) and can: – Detect insufficient distance to preceding vehicles in the speed range between 30 and 250 km/h (12 and 155 mph).

– Detect when the distance is decreasing. If there is an imminent risk of collision, the driver is warned visually and acoustically. Detect obstacles in the direction of travel. Issue appropriate warnings.

– recognize special driving situations, such as queue traffic, and adjust the trigger threshold for the warning and adaptive brake assist accordingly.

– If an imminent collision is detected, the braking force required to avoid the collision is calculated precisely and the remaining distance available is utilized as effectively as possible. This also gives the driver behind a better chance of avoiding a collision.

– readjust the braking pressure if the situation changes – if the vehicle in front accelerates, the braking pressure is readjusted to the driver's braking request; if the distance to moving and stopping vehicles decreases, the braking pressure is increased even further.

– preventive safety systems such as PRE-SAFE® activated as required, z. B. The seat belt tensioner.

Among other things, the steering assistance function, which supports the driver with a steering torque on the steering wheel when the vehicle is oversteering, provides considerable relief for the driver at the limits of driving physics. An innovation and highlight in the new GL is the standard Crosswind Assist system, which uses targeted braking interventions to support the driver in the event of strong crosswinds, thus ensuring an increased feeling of safety and comfort. Stable conditions even in crosswind attacks
Know the driving situation: When driving on well-maintained country roads or dead-straight stretches of highway, occupants suddenly feel a violent jolt from the side, such as when overtaking a truck, driving onto a bridge or after the end of side covers like noise barriers. A crosswind gust has caught the vehicle. Drivers of the new GL can rest easy in the face of such crosswinds, because Crosswind Assist reliably compensates for these meteorological attacks and keeps the vehicle steadily on course. Depending on the direction and intensity of the crosswind, the control systems set appropriate braking pressures on the wheels that largely compensate for the wind's influence on the vehicle or keep it to a minimum. The control maneuver is controlled by ADAPTIVE BRAKE. Corresponding information is provided by the sensors of the Electronic Stability Program ESP®, the AIRMATIC ADS air suspension and the electromechanical steering system. If the system has diagnosed a need for control, the driver is assisted by brake intervention on the front and rear wheels on the side facing the wind. This intervention produces a steering effect that reduces the effects of a crosswind attack. Crosswind Assist is active from 80 km/h when driving straight ahead and when cornering slightly. The driver always retains the upper hand: if he himself makes strong and/or rapid steering corrections, the crosswind assistant automatically takes a back seat. The system filters out weak crosswinds. Only kicks into action above a certain threshold value. Long-lasting, constant crosswinds are also ignored. Studies have shown that these driving situations have less impact on comfort and the feeling of safety and are intuitively compensated for by the driver. Directional recommendations from the steering assistant
The standard steering assist function becomes active whenever the assistance systems have diagnosed unstable driving conditions that can be calmed with simple steering movements. For this purpose, a steering wheel torque corresponding to the driving condition is determined at the steering wheel. Adjusted by the electric steering assist. In the event of oversteer – the rear of the vehicle is pushing toward the edge of the curve – the steering assistant gives the driver an indication via the steering wheel to countersteer until the vehicle has stabilized again. The second main feature is assistance when braking on a road with different friction values on the right and left, for example on a winter road that is icy on one side. The steering assist function gives the driver an indication of the direction of rotation on the steering wheel via the steering wheel so that the yaw impulse can be compensated for. Even if the driver ignores the steering assistant's recommendations, there are still sufficient reserves to stabilize the vehicle with the vehicle dynamics systems such as ADAPTIVE BRAKE, ESP® or 4ETS. The steering assistant always assists the driver with recommendations and never overrides him or her. Even after the crash: protecting the occupants
After a major crash, the hazard warning lights are automatically activated to warn the surrounding traffic. At the same time, the doors are unlocked automatically so that emergency services have the best possible access to the passengers. Partial opening of the side windows improves ventilation of the passenger compartment after restraint systems have been triggered. In the event of a detected collision, the central control unit shuts down the fuel system. After determining the cylinder position, the engine control system opens the injection valves of cylinders that are not in compression and relieves the high-pressure fuel area by directly draining the residual fuel into the combustion chamber. This reduces the risk of fuel leaks. To prevent fuel loss, relevant areas are equipped with cut-resistant fuel lines, which further increases safety in the event of a collision. In the new GL, the automatic Mercedes-Benz vehicle emergency call is on board as standard when equipped with COMAND Online. In the event of a serious accident, the emergency services can be notified automatically. Within a few minutes, they receive comprehensive information about the exact location of the accident or the vehicle model in question. How it works: If airbags or seat belt pretensioners are triggered in a crash and COMAND Online is connected to a cell phone, the system transmits the exact GPS position of the vehicle and its chassis number (VIN) to the Bosch Communication Center's emergency call and service centers via text message, while also transmitting the position data in parallel using the DTMF (dual tone multifrequency) method. Even if the occupants are unconscious or, for example, on a vacation trip, do not know exactly where they are, the emergency services alerted by the Communication Center can be informed accurately and quickly. In addition, the vehicle establishes a voice connection to the Bosch Communication Center within a short period of time. Communication is not in the language of the country in question, but in the language that the driver has set in COMAND Online. An emergency call can also be made manually, as the entry "Mercedes-Benz Emergency Call" is always in the first place in the phone book. With the market launch of the GL-Class, the emergency call system will be available in nine European countries: Germany, France, Italy, Spain, Great Britain, Austria, Belgium, the Netherlands and Switzerland. 19 additional countries will be added at the end of 2012. Apart from possible mobile phone charges, Mercedes customers incur no costs for Mercedes-Benz Emergency Call. GL has the view: 360°-Camera, Night View Assist PLUS and off-road lights
Together with the compact GLK character model, the 360° camera makes its debut in the GL-Class. The 360° camera is always coupled with PARKTRONIC and obtains its image information from a total of four cameras located in the radiator grille, in the tailgate above the license plate and in the two exterior mirror housings. The system calculates various views from the image information, including a bird's-eye view of the vehicle and its surroundings. The image is shown to the occupants on the central COMAND display in real time. It enables observation of the areas to the side, behind and in front of the vehicle and can thus avoid collisions during a wide range of maneuvering maneuvers on- and off-road. Additional dynamic guidance lines support orientation. The 360° camera marks the swiveling range of the vehicle depending on the steering angle. The 360° camera is activated automatically when reverse gear is engaged or by selection in the COMAND system. The camera images on the display change over with the selected driving gear: when reverse gear is engaged, the image from the rear camera is automatically displayed. The driver can also select the bird's-eye view or the individual images at any time via the COMAND system controller. In detail, the 360° camera can support the driver with the following functions: – The virtual bird's-eye view shows the GL in plan view and the surroundings three meters in front of/behind and 2.5 meters beside the vehicle in each case.

– Display of perspectives that are actually not physically possible. Ex.: When maneuvering in a parking garage with a low ceiling height, the GL. The surroundings shown in a bird's eye view from a height of over three meters. When maneuvering in a parking garage with a low ceiling height, the GL. Bird's eye view of the surroundings shown from a height of over three meters. The ceiling of the building is only a few centimeters above the vehicle. Visualization of vehicle sides. Of your surroundings to prevent contact damage z. B. Of the exterior mirrors or rims.

– Visualization of invisible obstacles below the vehicle beltline.

– Visualization of front and rear cross traffic when backing out of tight parking spaces or exiting lots. Visualization of people on the sidewalk when backing out of a parking space. Exiting from narrow parking spaces or property exits. Support for off-road driving in sophisticated. Unclear terrain.

– The color of the GL-Class in the COMAND display always corresponds to the actual vehicle paintwork.

For the first time, the cameras feature high-performance, digital CMOS image sensors (C omplementary M etal O xide S emiconductor = complementary metal-oxide semiconductor). Each camera operates with a resolution of one megapixel and has a coverage angle of 180 degrees. The views in the COMAND display, which are assembled from the four individual images by the system control, are convincingly high quality. The virtual bird's-eye view is displayed almost distortion-free. In contrast to known systems, there are no black bars between the individual images, but the 360° camera displays the overall image very homogeneously without transitions. In addition, the 360° camera adapts to different vehicle heights, for example when selecting the maximum possible ground clearance of 600 millimeters when equipped with the ON&OFFROAD package. The driver also keeps an overview during nighttime maneuvers. Up to 10 km/h, ambient lighting is activated when the 360° camera is selected with the headlights on. The 360° camera offers another special feature that prevents the rear camera from being blinded by dirt – for example, when driving extensively in muddy terrain or in winter when touring over damp, gritted highways. A flap seals off the camera. Reliably prevents soiling. The flap opens automatically when the 360° camera is activated. Night View Assist PLUS turns night into day. The assistance system, available as an option, works with two infrared headlights. The long wave light is invisible to the human eye. Illuminates the road in front of the GL-Class with the range of dipped headlights. The camera mounted in the interior mirror area of the windshield captures the infrared image. Displays it in the COMAND display after processing in the control unit. Here, the scene appears in a razor-sharp grayscale display; recognized pedestrians are additionally marked with so-called "photo corners" marked and thus clearly highlighted. The full range of the system is available from 10 km/h onwards. When driving off-road at low speeds in unclear terrain, it makes sense to illuminate the apron as broadly and brightly as possible for better and faster detection of obstacles. That's why the new GL, when equipped with the ON&OFFROAD package in conjunction with the Intelligent Light System, offers a special off-road light that meets precisely these requirements. When the driver activates the OFFROAD 1 or OFFRPAD 2 driving program with the headlights on, the off-road light automatically switches on. To achieve this, the bi-xenon headlamp modules swivel outward by 6 degrees, the light output of the xenon bulbs is increased by 3 watts and a symmetrical light distribution is achieved. In addition, the LED cornering light is switched on permanently on both sides, while the dynamic cornering light function and headlamp leveling are deactivated. With these settings, compared to the Intelligent Light System optimized for on-road use, a broader. Brighter illumination of the immediate area in front of the vehicle ensured. This significantly improves orientation in the terrain, possible obstacles are detected more quickly. The off-road light is active up to a speed of 50 km/h. If the driver exceeds this threshold, the system automatically resets the light functions optimized for road use. Since 40% of serious accidents occur at night, the light temperature of the xenon burner for the Intelligent Light System was raised to 5000 Kelvin to increase safety. This results in illumination that is close to daylight. Contributes to the driver's relief comfort. Courage to leave a gap: Active Parking Assist
The advanced Active Parking Assist uses ultrasonic sensors to detect potential parking spaces along the carriageway at speeds of up to 35 km/h, and on both sides of the carriageway in one-way streets. Suitable parking spaces are offered in the central display, and the driver then starts Active Parking Assist at the touch of a button on the multifunction steering wheel. The system calculates a suitable entry lane (trajectory) from the vehicle's current position. Afterwards the driver only has to accelerate and brake, the corresponding steering maneuvers are fully automatic. Automatic parking out of parking spaces is performed in the same way. Active Parking Assist includes 6 ultrasonic sensors in the front bumper and 4 in the rear bumper. The ultrasonic sensors on the corners of the front bumper have a greater range than the other sensors, so that the size of the parking space is reliably detected as the vehicle passes by. Full bearing: maneuvering and parking aids in retrospect
Back in the early days of the automobile at the beginning of the last century, car manufacturers were already thinking about how drivers could keep a better overview when maneuvering their automobiles. Initial tests with various dipsticks at the outer ends of the bumpers only succeeded in commercial vehicles. Then in 1959, the Mercedes-Benz passenger car models, christened "tail fins," marked the first real step toward integrating automotive clarity into the general design concept. Officially known as fins, the tail fins of Mercedes-Benz mid-size and luxury sedans allowed excellent assessment of the body, especially when looking over the shoulder to the diagonal rear, such as when parking. For a long time, the more or less pronounced bulges on the rear fenders remained the means to an end. This only changed at the beginning of the 1990s with the new S-Class of the 140 series. The up to 5.20-meter-long luxury-class model provided the occupants with an outstanding amount of space in the interior, but also called for aids to enable them to see the rear area of the body when maneuvering. The solution: extendable, chrome-plated dipsticks on the rear fenders, which were pneumatically extended after reverse gear was engaged, making the end of the S-Class visible. This mini-antenna solution was effective, but in the long run did not meet the technological demands of the top model from Mercedes-Benz. Consequently, the developers set to work. Presented in 1995 the revolutionary PARKTRONIC. The new system borrowed from nature and adapted the orientation system known from bats by means of ultrasound, enriched with sophisticated electronics. The distance to obstacles was visualized with color LCD displays in the dashboard. If the driver ignored the indications in the display, a clearly audible interval tone and then a continuous tone warned of possible collisions during intense approaches. The parking assistant available for the S-Class from 2005 onwards worked even more precisely, using the radar sensors of DISTRONIC and Brake Assist PLUS rather than ultrasound as with PARKTRONIC. Advantage over the bat principle: The monitored area around the vehicle was much larger. Here, too, the driver was told his territory acoustically with the typical beeping sounds. Visually, a colored display in the instrument cluster now provided much more detailed information about the marshalling course. Engaging reverse gear automatically activated an additional indicator display in the rear headliner. The same year sees the premiere of the first rear-view camera in the S-Class, which was supplied together with PARKTRONIC, which is still offered. The camera eye looked out of the trunk lid above the license plate into the surrounding area, the image appeared in the COMAND display after engaging reverse gear. The system's electronic director also calculated the optimal route into the targeted parking space. Supplemented the camera image with corresponding auxiliary lines. From 2008, "manual" parking space search systems were then part of the range. Parking procedures a thing of the past. For the first time, Mercedes-Benz customers could order Active Parking Assist for the revised generation of the A- and B-Class. The electronic co-driver searches for parking spaces on both sides of the vehicle at speeds of up to 35 km/h. Once he has found a parking space, the driver is not only delighted but also relieved to have the following shunting work taken off his hands. An arrow in the instrument cluster shows on which side the parking space is located. Then the reverse gear had to be engaged. The assistant can be given the marching orders at the touch of a button on the multifunction steering wheel. The assistant then takes over the steering work, the driver only has to accelerate and brake. Another intermediate step was taken a year later. Parallel to the Active Parking Assist, the classic PARKTRONIC was offered for the E-Class with a new parking guidance system. This version also found a suitable parking place as described. However, the driver had to take the wheel himself when parking, supported by instructions for the necessary steering maneuvers in the display of the instrument cluster. The preliminary highlight in the development of parking and maneuvering assistants is the Active Parking Assistant in the GL-Class with automatic parking and unparking function, as well as the 360° camera, which visualizes the driver's surroundings from various angles without any doubt: From a complete panorama from a bird's-eye view to various detailed views that allow maneuvering with centimeter precision even in unclear terrain.

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