A multiple hydraulic multi-plate clutch transmission for a vehicle, comprising:
- an input shaft (IS) configured to be rotated by an engine or a drive motor;
- at least four hydraulic multi-plate clutches (WC) arranged in a line on the input shaft at positions spaced apart from each other in a longitudinal axial direction of the input shaft, each of the hydraulic multi-plate clutches being engaged with or disengaged from the input shaft;
- a plurality of drive gears (G) provided on each of the hydraulic multi-plate clutches (WC);
- an output shaft (OS);
- a plurality of speed gears (D) engaging with any one of the drive gears (G);
- and a plurality of selectors (S),
- wherein the output shaft (OS) comprises a first output shaft (OS1) and a second output shaft (OS2) respectively disposed below, above, and parallel to the input shaft (IS);
- an operation unit for transmitting power to either the first output shaft (OS1) or the second output shaft (OS2) comprises:
- two hydraulic multi-plate clutches (WC) successively arranged facing each other;
- a pair of drive gears (G) provided on each of the hydraulic multi-plate clutches (WC);
- four speed gears (D) engaging with the corresponding drive gears (G);
- and two gear selectors (S) provided between the speed gears so as to selectively transmit power to either the first output shall (OS1) or the second output shall (OS2),
- wherein the pair of drive gears (G) provided on each of the hydraulic multi-plate clutches (WC) is made of a combination of drive gears of gear stages that are not successive to each other, the pair of drive gears (G) being configured to be successive to gear stages of another pair of drive gears of an adjacent hydraulic multi-plate clutch, wherein a first drive gear of each pair of drive gears is interlocked with the first output shaft (OS1), and a second drive gear of the pair of drive gears is interlocked with the second output shaft (OS2),
- wherein two of the speed gears (D) respectively engage with the two drive gears interlocked to the first output shaft (OS1), and the other two of the speed gears (D) respectively engage with the two drive gears interlocked to the second output shaft (OS2),
- wherein one of the gear selectors (S) is connected to the two corresponding speed gears (D) of the different hydraulic multi-plate clutches and disposed between the two speed gears interlocked with the first output shaft (OS1), and the other one of the gear selectors (S) is connected to the two corresponding speed gears (D) of the different hydraulic multi-plate clutches and disposed between the two speed gears interlocked with the second output shaft (OS2), wherein when a signal is input, any one selected from between the two gear selectors is connected to a corresponding one of the hydraulic multi-plate clutches such that power is output via one of the first output shaft (OS1) and the second output shaft (OS2) while the other one of the first output shaft (OS1) and the second output shaft (OS2) is pre-selected to prepare for acceleration or deceleration.