Shift control apparatus for vehicular automatic transmission and method thereof
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsHitoshi Matsunaga, Yoshiharu Harada
Life of this patent
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Abstract
An automatic shift control is executed in an automatic transmission with 5 shift speeds of range hold type in the highest gear stage of a shift range at the manual shift mode. Upon selection of a shift mode from the automatic shift mode to the manual shift mode, the shift range at the manual shift mode is selected in accordance with the vehicle speed detected at the automatic shift mode. If the vehicle speed is in the low-speed range, the shift range 3 is selected. If the vehicle speed is in the medium-speed range, the shift range 4 is selected. If the vehicle speed is in t he high-speed range, the shift range 5 is selected.
Claims11
A shift control apparatus for a vehicular automatic transmission, comprising a controller that:
- sets an automatic shift mode in which a gear stage is established based on a first vehicle operation information used for selecting a gear stage of the automatic transmission, and a manual shift mode in which the gear stage is established by a manual shift operation, the shift mode being manually selected between the automatic shift mode and the manual shift mode, and
- sets the gear stage upon selection of the shift mode from the automatic shift mode to the manual shift mode based on a second vehicle operation information which is different from the first vehicle operation information, wherein
- the controller selects the gear stage in a shift range having a highest gear stage corresponding to the gear stage set at the manual shift mode based on the first vehicle operation information, selects the highest gear stage at least one stage higher upon an upshifting operation manually performed, and selects the highest gear stage at least one stage lower upon a downshifting operation manually performed.
A shift control apparatus for a vehicular automatic transmission, comprising a controller that:
- sets an automatic shift mode in which a gear stage is established based on a first vehicle operation information used for selecting a gear stage of the automatic transmission, and a manual shift mode in which a shift range having the gear stage established based on the first vehicle operation information is selected by a manual shift operation, the shift mode being manually selected between the automatic shift mode and the manual shift mode, and
- sets the shift range upon selection of the shift mode from the automatic shift mode to the manual shift mode based on a second vehicle operation information which is different from the first vehicle operation information, wherein
- the controller selects the gear stage in a shift range having a highest gear stage corresponding to the gear stage set at the manual shift mode based on the first vehicle operation information.
A shift control method for a vehicular automatic transmission comprising:
- setting an automatic shift mode in which a gear stage is established based on a first vehicle operation information used for selecting a gear stage of the automatic transmission, and a manual shift mode in which the gear stage is established by a manual shift operation, the shift mode being manually selected between the automatic shift mode and the manual shift mode;
- setting the gear stage upon selection of the shift mode from the automatic shift mode to the manual shift mode based on a second vehicle operation information which is different from the first vehicle operation information, wherein
- the setting the gear stage step includes selecting the gear stage in a shift range having a highest gear stage corresponding to the gear stage set at the manual shift mode based on the first vehicle operation information, and selecting the highest gear stage at least one stage higher upon an upshifting operation manually performed, and selects the highest gear stage at least one stage lower upon a downshifting operation manually performed.
A shift control method for a vehicular automatic transmission comprising:
- setting an automatic shift mode in which a gear stage is established based on a first vehicle operation information used for selecting a gear stage of the automatic transmission, and a manual shift mode in which a shift range having the gear stage established based on the first vehicle operation information is selected by a manual shift operation, the shift mode being manually selected between the automatic shift mode and the manual shift mode;
- and
- setting the shift range upon selection of the shift mode from the automatic shift mode to the manual shift mode based on a second vehicle operation information which is different from the first vehicle operation information, wherein
- said step of setting an automatic shift mode includes selecting the gear stage in a shift range having a highest gear stage corresponding to the gear stage set at the manual shift mode based on the first vehicle operation information.
Dependencies are inferred from the claim text.