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Power transmission apparatus for a hybrid vehicle and a method for controlling the apparatus

  • US 6,645,105 B2
  • Filed: 06/27/2002
  • Issued: 11/11/2003
  • Est. Priority Date: 08/31/2001
  • Status: Expired due to Fees
First Claim
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1. A power transmission apparatus for a hybrid vehicle including two driving means, an engine and a motor generator which has a rotor to rotate supplied with electricity and serves as a power generator supplied with torque, comprising;

  • a planetary gear unit including at least a sun gear, a carrier and a ring gear; and

    a counter shaft for transmitting power to driving wheels of the vehicle, wherein said rotor of the motor generator is connected to said sun gear, an engine output shaft and a first main shaft which is capable of transmitting torque to said counter shaft through first gears in a first plurality of transmission gear ratios are connected to said carrier, and torque of said ring gear can be transmitted through second gears to a second main shaft which is capable of transmitting torque to said counter shaft through third gears in a second plurality of transmission gear ratios.

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