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, 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, said control apparatus comprising:
- a differential-state limiting device provided in the differential mechanism, and operable to limit a differential function of the differential mechanism, for limiting an operation of the continuously-variable transmission portion as the electrically controlled continuously variable transmission; and
a differential-state switching controller operable, when a predetermined condition regarding a vehicle condition is satisfied, for limiting the operation of the continuously-variable transmission portion as the electrically controlled continuously variable transmission by switching the differential mechanism to a differential function limited state in which a differential function is limited, and when acceleration or deceleration of the vehicle is required, for removing the limitation imposed by said differential-state limiting device on the operation of the continuously-variable transmission portion as the electrically controlled continuously variable transmission, by switching the differential mechanism placed in the differential function limited state to a differential state in which the limitation of the differential function is removed.
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Accused Products
Abstract
A control apparatus for a vehicular drive system including a continuously-variable transmission portion operable as an electrically controlled continuously variable transmission 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 control apparatus includes: (a) a differential-state limiting device provided in the differential mechanism, and operable to limit a differential function of the differential mechanism, for limiting an operation of the continuously-variable transmission portion as the electrically controlled continuously variable transmission; and (b) a differential-state switching controller operable, when acceleration or deceleration of the vehicle is required, for removing the limitation imposed by the differential-state limiting device on the operation of the continuously-variable transmission portion as the electrically controlled continuously variable transmission.
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Citations
18 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, 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, said control apparatus comprising:
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a differential-state limiting device provided in the differential mechanism, and operable to limit a differential function of the differential mechanism, for limiting an operation of the continuously-variable transmission portion as the electrically controlled continuously variable transmission; and a differential-state switching controller operable, when a predetermined condition regarding a vehicle condition is satisfied, for limiting the operation of the continuously-variable transmission portion as the electrically controlled continuously variable transmission by switching the differential mechanism to a differential function limited state in which a differential function is limited, and when acceleration or deceleration of the vehicle is required, for removing the limitation imposed by said differential-state limiting device on the operation of the continuously-variable transmission portion as the electrically controlled continuously variable transmission, by switching the differential mechanism placed in the differential function limited state to a differential state in which the limitation of the differential function is removed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A control apparatus for a vehicular drive system including a differential portion, the differential 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, said control apparatus comprising:
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a differential-state limiting device provided in the differential mechanism, and operable to limit a differential function of the differential mechanism, for limiting a differential function of the differential portion; and a differential-state switching controller operable, when a predetermined condition regarding a vehicle condition is satisfied, for switching the differential mechanism to a differential function limited state in which a differential function is limited, and when acceleration or deceleration of the vehicle is required, for switching the differential portion placed in the differential function limited state to a differential state in which the limitation of the differential function is removed. - View Dependent Claims (14, 15, 16, 17, 18)
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Specification