Slim Spur Gear Differential for Passenger Cars

Schaeffler has developed a slim design of spur gear differential for passenger cars that is 30 per cent lighter than its predecessors and will create up to 70 per cent free axial space in the gearbox. The slim shape of the new differential enables the use of new bearing concepts with optimised friction characteristics, which in turn will have a positive effect on fuel economy and CO2 emissions.

Ultimately, the lightweight differential will save space that can be used for larger dual clutches or transfer gearboxes, as well as making room for electrical components on hybrid-electric vehicles. The lightweight differential has already been installed in a mid-size passenger car. Tests are currently being carried out on the differential, including some on gearbox test rigs. These will be followed by an intensive design-optimisation stage, after which Schaeffler will decide whether to move into series production of the lightweight differential.

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