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AssigneeToyota Jidosha Kabushiki Kaisha
InventorsTakaaki Tokura, Katsumi Kono, Norimi Asahara, Masataka Osawa, Hiroyuki Nishizawa, Ryoichi Hibino
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In order to control slip amount of a disengagement side engagement device at the time of a gear shift operation, a target value Nr for rotational speed of an input shaft of an automatic transmission is calculated inside an input shaft speed target value calculating block. Slip control of the disengagement side engagement device is then carried out by controlling engine torque using an engine torque control amount obtained from a engine torque control amount estimation block and the clutch slip amount compensation value calculating section to cause rotation speed Nt of the input shaft to follow the target value Nr. In this way, responsiveness and precision of slip control of the disengagement side engagement device at the time of gear shift operation are improved, and it is possible to improve gear shift shock and to carry out a gear shift operation in a short period of time.
A slip control device, being a control device for an automatic transmission comprising an input shaft for transmitting drive torque of a driving motor, an output shaft for conveying drive torque to a load, and a plurality of frictional engagement devices provided between the input shaft and the output shaft, and carrying out a gear shift operation by disengaging a disengagement side engagement device that is in an engaged state and engaging an engagement side engagement device that is disengaged among the plurality of frictional engagement devices, wherein
Dependencies are inferred from the claim text.