Control apparatus and control method for power transmission apparatus for vehicle
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsTooru Matsubara, Kenta Kumazaki, Atsushi Tabata, Masakazu Kaifuku
Life of this patent
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Abstract
A control apparatus for a power transmission apparatus for a vehicle controls the rotational speed of an output shaft of an electric differential portion to a predetermined rotational speed until at least one of a control that starts a main power source and a control that stops the main power source ends, if at least one of a shift position and a shift range is changed from a parking position to a neutral position while the at least one of the control that starts the main power source and the control that stops the main power source is being executed.
Claims20
A control apparatus for a power transmission apparatus for a vehicle, which includes an electric differential portion in which a difference between a rotational speed of an input shaft connected to a main power source and a rotational speed of an output shaft is controlled by controlling an operating state of a motor connected to a rotational element of a differential mechanism, the control apparatus comprising
- an output-shaft rotational speed control portion that controls the rotational speed of the output shaft of the electric differential portion to a predetermined rotational speed until at least one of a control that starts the main power source and a control that stops the main power source ends, if at least one of a shift position and a shift range is changed from a parking position to a neutral position while the at least one of the control that starts the main power source and the control that stops the main power source is being executed.
A control apparatus for a power transmission apparatus for a vehicle, which includes an electric differential portion in which a difference between a rotational speed of an input shaft connected to a main power source and a rotational speed of an output shaft is controlled by controlling an operating state of a motor connected to a rotational element of a differential mechanism, the control apparatus comprising
- an output-shaft rotational speed control portion that controls the rotational speed of the output shaft of the electric differential portion to a predetermined rotational speed until a change in a load of the main power source ends, if at least one of a shift position and a shift range is changed from a parking position to a neutral position during the change in the load of the main power source.
A method of controlling a power transmission apparatus for a vehicle, which includes an electric differential portion in which a difference between a rotational speed of an input shaft connected to a main power source and a rotational speed of an output shaft is controlled by controlling an operating state of a motor connected to a rotational element of a differential mechanism, the method comprising:
- determining whether at least one of a shift position and a shift range is a parking position;
- determining whether a load of the main power source is being changed, if it is determined the at least one of the shift position and the shift range is the parking position;
- and
- controlling the rotational speed of the output shaft of the electric differential portion to a predetermined rotational speed, if it is determined that the load of the main power source is being changed.
Dependencies are inferred from the claim text.