Apparatus for facilitating release of the parking lock
First Claim
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1. An apparatus that facilitates release of a parking lock by reducing an applied load on the parking lock, the apparatus comprising:
- a control portion that executes a parking lock load reducing routine to apply torque to a parking gear in a direction that will reduce the applied load between the parking gear and a parking pole while movement of a driving wheel is restricted by a restricting force, and to reduce the restricting force on the driving wheel until the parking gear is rotated by the torque, when releasing the parking lock of an automatic transmission.
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Abstract
When releasing a parking lock of an automatic transmission, an apparatus for facilitating release of the parking lock executes a routine to apply torque to a parking gear in a direction that will reduce an applied load between the parking gear and a parking pole while movement of a driving wheel is in a restricted state, and to reduce the restricting force on the driving wheel until the parking gear is rotated by the torque.
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Citations
25 Claims
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1. An apparatus that facilitates release of a parking lock by reducing an applied load on the parking lock, the apparatus comprising:
a control portion that executes a parking lock load reducing routine to apply torque to a parking gear in a direction that will reduce the applied load between the parking gear and a parking pole while movement of a driving wheel is restricted by a restricting force, and to reduce the restricting force on the driving wheel until the parking gear is rotated by the torque, when releasing the parking lock of an automatic transmission. - View Dependent Claims (2, 3, 4, 5)
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6. An apparatus that facilitates release of a parking lock by reducing an applied load on a parking lock, the apparatus comprising:
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a driving wheel braking force adjusting apparatus that adjusts a braking force applied to a driving wheel; a parking gear torque outputting apparatus that outputs torque to rotate a parking gear; a parking gear rotation detector that detects rotation of the parking gear; a driving wheel restricting portion that executes a process to maintain movement of the driving wheel in a restricted state by controlling the adjustment of the braking force by the driving wheel braking force adjusting apparatus; an applied load reducing portion that executes a process to reduce the applied load by controlling the parking gear torque outputting apparatus to output torque to the parking gear in a direction that reduces the applied load between the parking gear and a parking pole, after movement of the driving wheel is maintained in a restricted state by the driving wheel restricting portion; and a driving wheel restricting force gradual reducing portion that executes a process to gradually reduce the restricting force on the driving wheel applied by the driving wheel restricting portion until the parking gear rotation detecting portion detects rotation of the parking gear of an amount equal to a reference angle while torque is being output by the applied load reducing portion. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13)
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14. An apparatus that facilitates release of a parking lock by reducing an applied load on a parking lock, the apparatus comprising:
a control portion that executes a parking lock load reducing routine to reduce a binding force for transmitting torque between a driving wheel and a parking gear while movement of the driving wheel is restricted, when releasing the parking lock of an automatic transmission. - View Dependent Claims (15, 16, 17)
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18. An apparatus that facilitates release of a parking lock by reducing an applied load on a parking lock, the apparatus comprising:
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a driving wheel braking force adjusting apparatus that adjusts braking force applied to a driving wheel; a driving force transmitting clutch that is provided between a parking gear and the driving wheel; a driving wheel restricting portion that executes a process to maintain movement of the driving wheel in a restricted state by controlling the adjustment of the braking force by the driving wheel braking force adjusting apparatus; and a clutch binding force reducing portion that executes a process to reduce a binding force of the driving force transmitting clutch after movement of the driving wheel is maintained in the restricted state by the driving wheel restricting portion. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25)
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Specification