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Motor integrated parallel hybrid transmission

  • US 20030199352A1
  • Filed: 02/10/2003
  • Published: 10/23/2003
  • Est. Priority Date: 08/09/1999
  • Status: Active Grant
First Claim
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1. A transmission comprising:

  • a transmission case;

    a first power source;

    a second power source;

    an electrical energy storage device in electrical communication with said second power source;

    a compound planetary gear set;

    an output shaft fixedly connected to at least a portion of said compound planetary gear set; and

    a plurality of torque transfer devices for selectively operatively connecting said first power source to said compound planetary gear set, and for connecting at least a portion of said planetary gear set to said transmission case, said plurality of torque transfer devices being simultaneously operable to selectively;

    (i) sum torque from said first and second power sources and transfer said summed torque to said output shaft;

    (ii) split torque from said first power source to simultaneously transfer a first portion of said split torque to said output shaft and a second portion of said split torque to said second power source;

    (iii) transmit torque from only a single one of said first and second power sources to said output shaft;

    (iv) transfer torque from said output shaft to said first and second power sources; and

    (v) transfer torque from said output shaft to either of said first or said second power sources independently;

    said compound planetary gear set further comprising;

    an input planetary gear train having a plurality of input gear train members, said input gear train members further comprising;

    an input sun gear, an input ring gear, and a plurality of input planetary gears engaging said input sun gear and said input ring gear and being operatively connected to an input planetary gear carrier; and

    an output planetary gear train having a plurality of output gear train members, said output gear train members further comprising;

    an output sun gear, an output ring gear, and a plurality of output planetary gears engaging said output sun gear and said output ring gear and being operatively connected to an output planetary gear carrier;

    wherein said input sun gear is conjoined with said output sun gear, and said input ring gear is conjoined with said output planetary gear carrier and said output shaft.

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