Automotive Design and Production

SEP 2013

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the relevant gauges; the one on the right, which is central on the instrument panel, is used for infotainment and control settings.) In addition to these infrared sensors and the previously mentioned stereo camera, there is a wide array of other sensors. There are two short-range radar sensors in the front bumper and in the sides of the rear bumper. They have a range of 30 m and a beam angle of 80°. There is a long-range radar at the front, which has a range of 200 m and a beam angle of 18°; it also has a medium-range capability of 60 m and 60°. And in the back there is a multimode radar that ofers an 80° beam angle at 30 m and a 16° angle at 80 m. There are 12 ultrasonic sensors: four in the front, four in the back, four on the sides. There are four cameras that are coordinated so that they provide a 360° view around the car. All of these are necessary because there are a multitude of functions that the S-Class ofers, where the various sensors provide inputs to other systems in the vehicle. For example, there is ROAD SURFACE SCAN (Mercedes uses all-caps) that uses the stereo camera to look at the surface of the road ahead; when bumps are detected, then MAGIC BODY CONTROL is activated, setting up the suspension system to accommodate them. There is DISTRONIC PLUS— adaptive cruise-control, which uses radar—that is now available with Steering Assist and Stop&Go; Pilot (Mercedes left out the spaces). In this setup, the stereo camera comes into play. It helps make adjustments to the steering torque when traveling on a straight road or where there are slight curves; it reads the road lines or a vehicle traveling ahead for its directional reckoning. In congested situations, when road markings are not visible, the car ahead is used for guidance. Speaking of congested conditions, this leads to BAS PLUS and PRE-SAFE Brake. These systems use both the stereo camera and radar sensors to not only provide autonomous braking in the event that it is calculated that the car in front is going to be rear-ended (it can prevent collisions at speeds up to 50 km/h), but there is pedestrian detection included as well. The driver is given both visual and acoustic warnings to get on the brakes; if the brakes are applied but not sufcient to prevent a collision, there is boosting all the way up to full braking. Making it This, the sixth-generation S-Class, is exclusively produced at the Mercedes plant in Sindelfngen. The last-generation model went into production there in 2005, and since then more than 500,000 vehicles have been produced. The U.S. market is getting the S550 and S550 4MATIC vehicles that have the long wheelbase (124.6 in.) and a 455-hp, 4.6liter, direct-injected, twin-turbocharged V8. However, there is not only a short-wheelbase version (119.5 in.), but a variety of other powertrains, including a 3.0-liter V6 diesel, a diesel hybrid, and a gasoline hybrid. Meaning that with the wide range of options, to say nothing of vehicle confguration, the people at Sindelfngen are dealing with a considerable amount of build possibilities. Recognizing this, Daimler has invested a considerable amount of money in the plant for the S-Class, as in € 350 million for the body shop, € 130 million for stamping, and € 70 million for assembly. 45

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