Honda Motor Co., Ltd.

Atsuhiro Saeki

Yuji Yasui

Takayuki Kishi

Yasushi Inagawa

Masashi Eto

Shohei Taka

Mitsuhiro Araki

Takahiro Matsuda

Shintaro Kameda

Hiroyuki Okuda

Hidekazu Araki

A vehicle control device includes a control device that performs synchronization control of a synchronization mechanism on a vehicle, the vehicle including an input shaft, an intermediate shaft to which rotational power is transmitted, a shift gear that is synchronized with the intermediate shaft, and a synchronization mechanism that synchronizes the input side synchronization element with the output side synchronization element, and the control device includes a first synchronization mode in which the differential rotation is calculated on the basis of the rotational speed of the intermediate shaft, and a second synchronization mode in which the differential rotation is calculated on the basis of the rotational speed of the input shaft, and performs synchronization control in the first synchronization mode when performing the synchronization control, and performs the synchronization control in the second synchronization mode in a case in which the synchronization control does not proceed.

Control device for vehicle

A control device of a twin-clutch transmission includes a gear operation mechanism driven by a single actuator mechanism . The gear operation mechanism performs a selection operation to select a synchromesh unit to operate from a plurality of synchromesh units and a shift operation to drive the selected synchromesh unit to an engagement position (in-gear position) corresponding to a shift position. In the control device, based on a deceleration rate of a vehicle, a determination is made to allow or disallow continuation of the shift operation at a change of a shift position to a target shift position. When a determination is made to disallow continuation of the shift operation, only the selection operation is performed, and the shift operation is prohibited. When a determination is made to allow continuation of the shift operation, the shift operation is allowed.

Transmission control device

In a control apparatus for an automatic transmission, it is configured to calculate a change amount (&#x394;NC estimation value) of an output rotational speed of the transmission (S); calculate an average (I phase initial average G) of the change amount of the output rotational speed over a predetermined period of an initial inertia (I) phase of shifting; calculate an average (after-shift average G) of a vehicle acceleration after the completion of the shifting, assuming that the change amount of the output rotational speed indicates the vehicle acceleration G; calculate a difference (I phase initial G) between the average of the change amount of the output rotational speed and the average of the vehicle acceleration; incrementally and decrementally correct the desired value of the transmission torque of the frictional engaging element such that the calculated difference falls within a predetermined range; and control supply of hydraulic pressure to the frictional engaging element such that it becomes the corrected desired value (Sto S). With this, since the vehicle acceleration at shifting is estimated and evaluated and based thereon, variation in the transmission torque of the frictional engaging element, etc., is learned, it becomes possible to fully exploit the potential of the frictional engaging element, thereby improving a feel given to the vehicle occupant(s) at shifting.

Control apparatus for automatic transmission

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Wako, Japan

Atsuhiro Saeki