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Multi-speed transmission with an integrated electric motor

  • US 8,602,934 B2
  • Filed: 10/07/2011
  • Issued: 12/10/2013
  • Est. Priority Date: 02/17/2011
  • Status: Expired due to Fees
First Claim
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1. A multiple speed transmission for a motor vehicle comprising:

  • an input member and an output member;

    an electric motor coupled to the input member;

    a first planetary gear assembly with a sun gear, a ring gear, and a planet gear carrier that supports a set of planet gears;

    a second planetary gear assembly with a sun gear coupled to the input member, a ring gear coupled to the ring gear of the first planetary gear assembly, and a planet gear carrier that supports a first set of planet gears and a second set of planet pears and is coupled to the planet gear carrier of the first planetary gear assembly;

    a third planetary gear with a sun gear coupled to the planet gear carrier of the second planetary gear assembly, a ring gear, and a planet gear carrier that supports a set of planet gears; and

    a fourth planetary gear assembly with a sun gear, a ring gear coupled to the planet gear carrier of the third planetary gear assembly, and a planet gear carrier that supports a set of planet gears and is coupled to and drives the output member and to the ring gear of the third planetary gear assembly.

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  • 3 Assignments
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