Car with E axlePorsche LMP1 294 kW 105 kW Combustion engineElectric motor Battery The combination of modern combustion engines and a selectable electrical drive axle if required is not only a vision of the future from the WEC racing series Even today with its E axle Schae ler o ers the advantages of a selectable all wheel drive with a bene t in handling stability safety and e ciency Vehicle concepts in comparison The connection of the combustion engine with an electric drive provides new opportunities In motor racing hybrid cars with four wheel drive concepts represent the pinnacle of the technically feasible In conventional road cars the electri cation of the drivetrain with increasing hybridisation plays an important role With its E axle Schae ler provides an innovation that combines the electric drive with the possibility of wheel selective controllable driving power All wheel drive in connection with combustion engines is available to the driver when required ELECTRIC FOUR WHEEL DRIVE Lightweight di erential 5 kW electric motor for driving dynamic control torque vectoring 105 kW E motor E axle Planetary gears VOLTAIC DRIVE First the meaning of hybrid in the language of automotive developers should be explained Put simply it means adding a second power source for propulsion to complement the con ventional internal combustion engine Today this refers to electric motors ONE NAME VARIOUS CONCEPTS Automotive OEMs and their suppliers are testing and o ering various hybrid systems Schae ler is among the companies at the fo refront of this technology As a pioneer in this eld Schae ler see right hand page has been testing a wide range of systems and ga thering in depth experience of high value to the automotive industry Every one of these innovative and intelli gent concepts is justi ed in the marketplace Not least because more electric power on board makes it possible to replace other con ventionally used mechanical or hydraulic com ponents with electrical ones OPTIMIZATION IN MANY AREAS Obviously the energy with which hybrid technology is pursued within the Schae ler Group is matched by the company s intensity to drive the optimization of the internal com bustion engine forward in many areas Uni Air the rst fully variable electrohydraulic val ve timing system see page 14 for instance is a Schae ler invention Hybrid is the magic word for the future of the automotive powertrain But not all hybrids are created equal Schaeff ler s research and development activities are focused on various concepts While each of them is justifi ed in its own right they all pursue a common goal effi ciency and lower CO2 emissions In fo gr ap hi cs w w w jo se kd es ig n de 8

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