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Two-mode, input-split, parallel, hybrid transmission

  • US 5,558,588 A
  • Filed: 02/16/1995
  • Issued: 09/24/1996
  • Est. Priority Date: 02/16/1995
  • Status: Expired due to Term
First Claim
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1. A hybrid transmission, comprising:

  • an input means to receive power from an engine;

    power output means;

    first and second motor/generators;

    energy storage means for accepting power from, and supplying power to, said first and second motor/generators;

    control means for regulating power flow between said energy storage means and said motor/generators as well as between said first and second motor/generators;

    at least a first planetary gear set;

    said first planetary gear set having at least three members including an inner gear member, an outer gear member and a carrier gear member having a plurality of planet gear members which meshingly engage both of the inner and outer gear members;

    means operatively to connect said first motor/generator to a first of said gear members in said first planetary gear setmeans operatively to connect said second motor/generator to a second of said gear members in said first planetary gear set;

    means operatively to connect said input means to a third of said gear members of said first planetary gear set;

    means operatively to connect one of said gear members in said first planetary gear set to said power output means;

    a first torque transfer device selectively effecting an operative connection between one of said gear members in said first planetary gear set and said power output means; and

    a second torque transfer device selectively effecting a power transfer between another of said gear members in said first planetary gear set and said power output means.

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