×

Control apparatus for vehicular drive system

  • US 7,503,870 B2
  • Filed: 05/26/2006
  • Issued: 03/17/2009
  • Est. Priority Date: 05/26/2005
  • Status: Expired due to Fees
First Claim
Patent Images

1. A control apparatus for a vehicular drive system including a continuously-variable transmission portion operable as an electrically controlled continuously variable transmission, and a step-variable transmission portion, said continuously variable transmission portion having a differential mechanism operable to distribute an output of an engine to a first electric motor and a power transmitting member, and a second electric motor which can transmit power to a drive wheel, said step-variable transmission portion disposed in a power transmitting path between the engine and the drive wheel to function as an automatic transmission, said control apparatus comprising:

  • a differential-state limiting device provided in said differential mechanism, and operable to limit a differential function of said differential mechanism, for limiting an operation of said continuously-variable transmission portion as said electrically controlled continuously variable transmission; and

    an electric-motor control portion for controlling a drive-force assisting operation to generate an assisting drive force to drive the vehicle during a shifting action of said step-variable transmission portion, differently depending upon whether said continuously-variable transmission portion is placed in a continuously-variable shifting state in which said continuously-variable transmission portion is operable as said electrically controlled continuously variable transmission, or a non-continuously-variable shifting state in which the continuously-variable transmission portion is not operable as said electrically controlled continuously variable transmission.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×