초록 ▼

This invention relates to an automatic transmission for a vehicle comprising a torque convertor equipped with a rotary member on the input side and a rotary member on the output side; a semi-direct coupling clutch interposed between both of the rotary members, actuated by a control fluid pressure an

This invention relates to an automatic transmission for a vehicle comprising a torque convertor equipped with a rotary member on the input side and a rotary member on the output side; a semi-direct coupling clutch interposed between both of the rotary members, actuated by a control fluid pressure and capable of mechanically transmitting the torque between both of the rotary members while permitting the slip of rotation therebetween; an auxiliary transmission operatively connected to the torque convertor and adapted to effect the speed change operation in accordance with speed change ratios of a plurality of transmission stages; and a control apparatus for controlling the interconnecting force of the semi-direct coupling clutch in such a manner that the force becomes greater when the auxiliary transmission is operating at the speed change ratio of a higher transmission stage and becomes lower when the auxiliary transmission is operating at the speed change ratio of a lower transmission stage.

대표청구항 ▼

An automatic transmission for a vehicle, comprising: a torque convertor equipped with a rotary member on the input side and a rotary member on the output side; a semi-direct coupling clutch interposed between both of said rotary members and actuated by a control fluid pressure to mechanically transm

An automatic transmission for a vehicle, comprising: a torque convertor equipped with a rotary member on the input side and a rotary member on the output side; a semi-direct coupling clutch interposed between both of said rotary members and actuated by a control fluid pressure to mechanically transmit the torque between both of said rotary members while permitting slip of rotation therebetween; an auxiliary transmission operatively connected to said torque convertor and adapted to effect a speed change operation in accordance with speed change ratios of a plurality of transmission stages; and a control apparatus for controlling an interconnecting force of said semi-direct coupling clutch such that the force becomes greater in accordance with operation of said auxiliary transmission at the speed change ratio of a higher transmission stage and becomes lower in accordance with operation of said auxiliary transmission at the speed change ratio of a lower transmission stage.