Toyota Jidosha Kabushiki Kaisha

Bosch Corporation

Masaaki Otsubo

Hideo Watanabe

Akinori Yamazaki

Tomohiro Hatakeyama

Provided is a control device for a vehicle including an engine, a manual transmission, a clutch disposed between the engine and the manual transmission, and a clutch manipulation unit with which a driver controls the state of the clutch. In the control device for the vehicle, an engine revolution increasing control to increase an engine revolution is started at a predetermined start timing when the clutch is switched from a disengaged state to an engaged state by manipulation of the clutch manipulation unit at the time of starting the vehicle in an accelerator-off state, and in a case where the engine revolution is largely degrading in a predetermined period around start of the engine revolution increasing control, the start timing of the engine revolution increasing control is advanced for a next starting of the vehicle in the accelerator-off state.

Control device for vehicle

When there is a shift command for the transmission () during or immediately after clutch touch point learning, a shift operation value for the transmission () is reduced compared to what it normally is (steps STand ST). Reducing the shift operation value in this way enables the change in the rotation speed of an input rotating body at the time of a gear shift operation to be gradual if that gear shift operation is during or immediately after clutch touch point learning. As a result, inertia torque, and thus shift shock, can be suppressed.

Control apparatus and control method for transmission

An ECU executes a program including a step of detecting a running speed of a vehicle and a current gear stage of the vehicle, a step of determining whether or not shifting is required, a step of calculating a required period T(D) for performing double clutch control if shifting is required, a step of calculating a required period T(S) for synchro-rotational synchronization, a step of determining whether or not the required period T(D) for double clutch control is equal to or shorter than the required period T(S) for synchro-rotational synchronization, and a step of carrying out shifting by performing double clutch control if the required period T(D) for double clutch control is equal to or shorter than the required period T(S) for synchro-rotational synchronization. A sense of incongruity felt by a driver during shifting is thereby suppressed.

Shifting apparatus and shifting control method thereof

The ECU executes a program including the step of setting a threshold value A to be compared with a stroke amount of an actuator for determining whether gear shifting has completed or not, taking no account of a deflection amount C of the hardware due to the shift load, when the vehicle speed V is higher than a predetermined vehicle speed V(), and the step of setting a threshold value B to be compared with the stroke amount of the actuator for determining whether gear shifting has completed or not, to a value obtained by adding the deflection amount C of the hardware due to the shift load to the threshold value A used when the vehicle speed V is not lower than V(), when the vehicle speed V is lower than the predetermined vehicle speed V().

Growing community of inventors

Nishikamo-gun, Japan

Masaaki Otsubo