Abstract: An automatic transmission includes a brake including a fixed-side cylindrical member spline-coupled to a transmission case, a rotation-side cylindrical member coupled to a given rotating member, a plurality of friction plates disposed between the fixed-side cylindrical member and the rotation-side cylindrical member, and including a fixed-side friction plate configured to be spline-engaged with the fixed-side cylindrical member and a rotation-side friction plate configured to be spline-engaged with the rotation-side cylindrical member, and a piston configured to engage the plurality of friction plates. The automatic transmission further includes a shock absorbing member disposed between a spline part of the transmission case and a spline part of the fixed-side cylindrical member and configured to absorb impact when the fixed-side cylindrical member rotates relative to the transmission case.

Abstract: An automatic transmission is provided, which includes a brake including a fixed-side cylindrical member spline-coupled to a transmission case, a rotation-side cylindrical member coupled to a given rotating member, a plurality of friction plates disposed between the fixed-side cylindrical member and the rotation-side cylindrical member, and including a fixed-side friction plate configured to be spline-engaged with the fixed-side cylindrical member and a rotation-side friction plate configured to be spline-engaged with the rotation-side cylindrical member, and a piston configured to engage the plurality of friction plates. The automatic transmission includes a shock absorbing member disposed between a spline part of the transmission case and a spline part of the fixed-side cylindrical member and configured to absorb impact when the fixed-side cylindrical member rotates relative to the transmission case.

Abstract: A control device of a powertrain with a centrifugal pendulum damper is provided in which the centrifugal pendulum damper and a power transmission shaft are operatively coupled via a connection/disconnection mechanism, and the control device of the powertrain with the centrifugal pendulum damper includes a connection/disconnection control module for controlling an engagement degree of the connection/disconnection mechanism by controlling the engagement degree of the connection/disconnection mechanism such that the centrifugal pendulum damper rotates at or below a predetermined upper rotational speed limit.

Abstract: A control apparatus of a powertrain with a centrifugal pendulum absorber, includes an engine formed with a plurality of cylinders, a drive force transmission shaft for receiving an engine output torque, a centrifugal pendulum absorber for reducing a variation in the output torque, a connect-disconnect mechanism, an engine controlling module for shifting an engine operating state between an all-cylinder operation and a reduced-cylinder operation, and a connection controlling module. The connection controlling module shifts a connecting state of the connect-disconnect mechanism to a first state when the engine is in the all-cylinder operation, and shifts the connecting state to a second state in which the connection is tighter than the first state when the engine is in the reduced-cylinder operation. In response to issued requests to shift the engine operating state, the connection controlling module shifts the connecting state, and the engine controlling module shifts the engine operating state.

Abstract: A control device of a powertrain with a centrifugal pendulum damper is provided comprising a power transmission shaft which transmits power between a drive source and an automatic transmission, and a centrifugal pendulum damper which is coupled to the power transmission shaft and a connection/disconnection mechanism. The automatic transmission has a transmission mechanism of a hydraulic pressure control type, which includes a transmission control module which performs a control to supply transmission hydraulic pressure to the transmission mechanism. The transmission control module includes a transmission characteristic changing module which changes a control characteristic of transmission hydraulic pressure according to an engagement degree of the connection/disconnection mechanism.

Abstract: A control apparatus of a powertrain with a centrifugal pendulum absorber, includes an engine formed with a plurality of cylinders, a drive force transmission shaft for receiving an engine output torque, a centrifugal pendulum absorber for reducing a variation in the output torque, a connect-disconnect mechanism, an engine controlling module for shifting an engine operating state between an all-cylinder operation and a reduced-cylinder operation, and a connection controlling module. The connection controlling module shifts a connecting state of the connect-disconnect mechanism to a first state when the engine is in the all-cylinder operation, and shifts the connecting state to a second state in which the connection is tighter than the first state when the engine is in the reduced-cylinder operation. In response to issued requests to shift the engine operating state, the connection controlling module shifts the connecting state, and the engine controlling module shifts the engine operating state.

Abstract: A control device of a powertrain with a centrifugal pendulum damper is provided comprising a power transmission shaft which transmits power between a drive source and an automatic transmission, and a centrifugal pendulum damper which is coupled to the power transmission shaft and a connection/disconnection mechanism. The automatic transmission has a transmission mechanism of a hydraulic pressure control type, which includes a transmission control module which performs a control to supply transmission hydraulic pressure to the transmission mechanism. The transmission control module includes a transmission characteristic changing module which changes a control characteristic of transmission hydraulic pressure according to an engagement degree of the connection/disconnection mechanism.

Abstract: A control device of a powertrain with a centrifugal pendulum damper is provided in which the centrifugal pendulum damper and a power transmission shaft are operatively coupled via a connection/disconnection mechanism, and the control device of the powertrain with the centrifugal pendulum damper includes a connection/disconnection control module for controlling an engagement degree of the connection/disconnection mechanism by controlling the engagement degree of the connection/disconnection mechanism such that the centrifugal pendulum damper rotates at or below an predetermined upper rotational speed limit.