Control apparatus for vehicular drive system
First Claim
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.
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Accused Products
Abstract
A control apparatus for a vehicular drive system including a continuously-variable transmission portion, and a step-variable transmission portion, the 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 disposed in a power transmitting path between the power transmitting member and a drive wheel of a vehicle, the step-variable transmission portion constituting a part of the power transmitting path, the control apparatus includes a differential-state limiting device provided in the differential mechanism for limiting an operation of the continuously-variable transmission portion, and an electric-motor control device to control a drive-force assisting operation to drive the vehicle during a shifting action of the step-variable transmission portion, differently depending upon whether the continuously-variable transmission portion is placed in a continuously-variable shifting state or a non-continuously-variable shifting state.
14 Citations
13 Claims
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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:
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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 Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification