초록 ▼

This transmission has a first planetary gear assembly having first input means connected to an input shaft, first output means, and first reaction means, and a second planetary gear assembly having second input means connected to the first input means, second output means, and second reaction means

This transmission has a first planetary gear assembly having first input means connected to an input shaft, first output means, and first reaction means, and a second planetary gear assembly having second input means connected to the first input means, second output means, and second reaction means connected directly to the first reaction means by a reaction shaft. First clutch means, when engaged, connect the first output means to an output shaft in a high driving range. A hydrodynamic drive is used; for example, a torque converter, which may or may not have a stationary case, has a pump connected to the second output means, a stator grounded by an overrunning clutch to the case, and a turbine connected to an output member, and may be used in a starting phase. Alternatively, a fluid coupling or other type of hydrodynamic drive may be used. Second clutch means, when engaged, for connecting the output member to the output shaft in a low driving range. A variable-displacement hydraulic unit is mechanically connected to the input shaft, and a fixed-displacement hydraulic unit is mechanically connected to the reaction shaft. The hydraulic units are hydraulically connected together so that when one operates as a pump the other acts as a motor, and vice versa. Both clutch means are connected to the output shaft through a forward-reverse shift arrangement. It is possible to lock out the torque converter after the starting phase is over.

대표청구항 ▼

A transmission, including in combination: an input shaft, a first planetary gear assembly having first input means connected to said input shaft, first output means, and first reaction means, a second planetary gear assembly having second input means connected to said first input means, second outpu

A transmission, including in combination: an input shaft, a first planetary gear assembly having first input means connected to said input shaft, first output means, and first reaction means, a second planetary gear assembly having second input means connected to said first input means, second output means, and second reaction means connected directly to said first reaction means by a reaction shaft, an output shaft, first clutch means for connecting said first output means to said output shaft in a high driving range, a hydrodynamic drive connected to said second output means, having an output member connected thereto, second clutch means for connecting said output member to said output shaft in a low driving range, a variable-displacement hydraulic unit mechanically connected to said input shaft, and a fixed-displacement hydraulic unit mechanically connected to said reaction shaft, said hydraulic units being hydraulically connected together so that when one operates as a pump the other acts as a motor, and vice versa.