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      48V Eco Drive
      Press Release
      December 16, 2016

      Continental´s Connected Energy Management for better fuel efficiency and a smoother ride

      • For the first time Continental presents a 48 volt mild hybrid demo car with connected Energy Management (cEM) at the CES, Las Vegas
      • The innovative cEM offers fuel efficiency guidance to the driver, which can be used to save an additional 3 to 4 percent of fuel, CO2 emissions – and cost.
      • Coasting and regenerative braking are used more profoundly by processing dynamic traffic data (ehorizon) from the cloud

      Las Vegas/Regensburg, December 16, 2016. Dynamic data on the latest traffic situation provide the digital input for Continental’s connected Energy Management (cEM). At CES 2016, in Las Vegas, the international automotive supplier presents for the first time the innovative cEM demo vehicle, which helps the driver to save even more fuel. The car is a mild hybrid equipped with the Continental 48 Volt Eco Drive system. Compared to the 1.2 liter TSI engine powered Golf VI base model complete with 12 volt stop-start function, the Eco Drive hybrid can save up to 21 percent of fuel. cEM can add another 3 to 4 percent of fuel efficiency to this without touching the vehicle architecture.

      „Our connected Energy Management expands a hybrid’s coasting and recuperation phases during which the combustion engine is switched off and decoupled from the drivetrain“, said Dr. Oliver Maiwald, Head of Technology & Innovations at the Continental Powertrain Division. „By analyzing cloud data of the current traffic situation, cEM suggests to the driver when it makes sense to step off the pedal. If you approach a traffic light that is about to turn red, cEM will inform you. If you take your foot off the accelerator, the car will automatically activate the optimum combination of engine-off coasting and regenerative braking.”

      Based on cloud data, obtained through the car’s dynamic eHorizon, the cEM vehicle “knows” the road ahead and the actual traffic condition. This information is utilized to make recommendations to the driver. For instance, the cEM’s Traffic Light Assist function knows when the next traffic light will turn red, which may not be in the driver’s line of sight. A tangible signal at the Accelerator Force Feedback Pedal (AFFP) plus a visual information in the cluster instrument suggest to the driver to slow down. All the driver needs to do is take the foot off the accelerator. The cEM will ensure that the car arrives at the stop line with a minimum of wheel braking.

      The combustion engine: Now you need it – now you don‘t

      Hybrid cars offer the best of both worlds: The combustion engine gives them an optimum range. Electrification dramatically increases the hybrid’s fuel efficiency. At the backbone of this benefit are engine-off phases. Depending on the individual trip and road topography, the combustion engine may not be needed for propulsion during as much as 25 percent of the total driving time. While the engine is off, the car’s kinetic energy can either be used to transform it into electric energy or to coast – or apply both strategies in a balanced combination.

      Connected Energy Management with dynamic cloud data can exploit the full potential of both hybrid operating strategies. For instance, cEM will tell the driver when it is most efficient to step off the pedal and just let the car use coasting and regenerative braking until it comes to a standstill in front of a red traffic light. cEM combines dynamic cloud data and map data with onboard long-range radar information to accomplish this.

      “Typically, when you approach a red light, there will be a couple of cars waiting already”, said Maiwald. “When the radar picks up these cars, the cEM knows that your stop line is actually closer than the stop line of the light. Now, in order to harvest the most energy, the intelligent Traffic Light Assistant will activate coasting and recuperation a little earlier so you harvest more energy and save more fuel.”

      No “need for speed…”

      Another new cEM function that will be showcased is called the Intelligent Deceleration Assistant. It offers guidance to the driver in a multitude of situations, when the car’s instantaneous speed eventually needs to be reduced. “When you approach a speed limit zone, cEM will tell you in time to step off the accelerator. Your car will then automatically adapt its speed to the oncoming limit. Again, we seek to avoid using the wheel brakes because they waste energy”, said Maiwald. “Of course the driver can always choose to ignore the cEM recommendation. In that case the engine-off strategy will simply not be activated.”

      On the other hand, if the driver follows the cEM guidance, the resulting ride can be as smooth as the driving style, which professional chauffeurs are often trained to use – plus the fuel efficiency will be better.

      Available documents

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