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AssigneeAisin Aw Co., Ltd.
InventorsTetsuya Shimizu, Masamichi Yamaguchi, Satoshi Nishio, Kenichi Tsuchida, Akitomo Suzuki, Kazunori Ishikawa, Shin-ichirou Murakami
Estimating the term…
An exemplary control device includes an input torque detection unit that detects an input torque input to the input shaft; and a controller that: determines torque distribution of two of the friction engagement elements that form the shift speeds; and calculates a transmission torque of the two friction engagement elements based on the input torque and the torque distribution and sets the engagement pressure to obtain a torque capacity that can transmit the transmission torque, wherein the controller sets the engagement pressure such that slippage does not occur in the two friction engagement elements in a state where engagement of the two friction engagement elements forms the shift speeds and such that, even if an additional friction engagement element engages based on the line pressure while the two friction engagement elements are engaged, one of the three friction engagement elements is caused to slip.
A control device for an automatic transmission that includes an automatic speed change mechanism with an input shaft connected to a driving source and an output shaft connected to a drive wheel and a plurality of friction engagement elements engaged based on an engagement pressure supplied to each hydraulic servo, in which a transmission path between the input shaft and the output shaft is changed based on engaged states of a predetermined number of friction engagement elements of the plurality of friction engagement elements to form a plurality of shift speeds;
A method of operating an automatic transmission that includes an automatic speed change mechanism with an input shaft connected to a driving source and an output shaft connected to a drive wheel and a plurality of friction engagement elements engaged based on an engagement pressure supplied to each hydraulic servo, in which a transmission path between the input shaft and the output shaft is changed based on engaged states of a predetermined number of friction engagement elements of the plurality of friction engagement elements to form a plurality of shift speeds;
A non-transitory computer readable storage medium storing a set of program instructions for operating an automatic transmission that includes an automatic speed change mechanism with an input shaft connected to a driving source and an output shaft connected to a drive wheel and a plurality of friction engagement elements engaged based on an engagement pressure supplied to each hydraulic servo, in which a transmission path between the input shaft and the output shaft is changed based on engaged states of a predetermined number of friction engagement elements of the plurality of friction engagement elements to form a plurality of shift speeds;
Dependencies are inferred from the claim text.