Transmission unit, power transmission system and vehicle comprising the same
First Claim
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1. A transmission unit for a vehicle, comprising:
- a plurality of input shafts, each of the input shafts having a shift driving gear thereon;
a plurality of output shafts, each of the output shafts having a shift driven gear configured to mesh with the corresponding shift driving gear;
a motor power shaft configured to rotate together with one of the output shafts;
an output unit configured to rotate with the one or a different one of the output shafts at a different speed or configured to selectively engage with the one or the different one of the output shafts so as to rotate together with the engaged output shaft;
a reverse output gear configured to selectively rotate together with one of the shift driving gears via a reverse idler gear; and
a reverse synchronizer configured to selectively synchronize the reverse output gear with the reverse idler gear,wherein both the reverse output gear and the reverse idler gear are fitted over the motor power shaft; and
wherein in a parking state, the motor power shaft is configured to rotate together with one of the input shafts to drive a first motor generator to generate electric power; and
wherein the plurality of input shafts comprise a first input shaft and a second input shaft coaxially fitted over the first input shaft, and the plurality of output shafts comprise a first output shaft and a second output shaft parallel to the first and second input shafts respectively; and
wherein the shift driving gears on the plurality of input shafts comprise;
a first-gear driving gear disposed on the first input shaft, a second-gear driving gear disposed on the second input shaft, a third-gear driving gear disposed on the first input shaft, a fifth-gear driving gear disposed on the first input shaft, and a fourth-sixth-gear driving gear disposed on the second input shaft; and
wherein the shift driven gears on the plurality of output shafts comprise;
a first-gear driven gear, a second-gear driven gear, a third-gear driven gear, and a fourth-gear driven gear disposed on the first output shaft, a fifth-gear driven gear and a sixth-gear driven gear disposed on the second output shaft; and
wherein a first-third gear synchronizer disposed between the first-gear driven gear and the third-gear driven gear, a second-fourth gear synchronizer disposed between the second-gear driven gear and the fourth-gear driven gear, and a fifth-sixth gear synchronizer disposed between the fifth-gear driven gear and the sixth-gear driven gear.
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Abstract
A transmission unit includes: input shafts, each of the input shafts being provided with a shift driving gear thereon; output shafts, each of the output shafts being provided with a shift driven gear configured to mesh with a corresponding shift driving; a motor power shaft configured to rotate together with one of the output shafts; and an output unit configured to rotate with one of the output shafts at different speeds and configured to selectively engage with one of the output shafts so as to rotate together with one of the output shafts. A power transmission system including the transmission unit and a vehicle including the power transmission system are also provided.
74 Citations
17 Claims
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1. A transmission unit for a vehicle, comprising:
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a plurality of input shafts, each of the input shafts having a shift driving gear thereon; a plurality of output shafts, each of the output shafts having a shift driven gear configured to mesh with the corresponding shift driving gear; a motor power shaft configured to rotate together with one of the output shafts; an output unit configured to rotate with the one or a different one of the output shafts at a different speed or configured to selectively engage with the one or the different one of the output shafts so as to rotate together with the engaged output shaft; a reverse output gear configured to selectively rotate together with one of the shift driving gears via a reverse idler gear; and a reverse synchronizer configured to selectively synchronize the reverse output gear with the reverse idler gear, wherein both the reverse output gear and the reverse idler gear are fitted over the motor power shaft; and wherein in a parking state, the motor power shaft is configured to rotate together with one of the input shafts to drive a first motor generator to generate electric power; and wherein the plurality of input shafts comprise a first input shaft and a second input shaft coaxially fitted over the first input shaft, and the plurality of output shafts comprise a first output shaft and a second output shaft parallel to the first and second input shafts respectively; and wherein the shift driving gears on the plurality of input shafts comprise;
a first-gear driving gear disposed on the first input shaft, a second-gear driving gear disposed on the second input shaft, a third-gear driving gear disposed on the first input shaft, a fifth-gear driving gear disposed on the first input shaft, and a fourth-sixth-gear driving gear disposed on the second input shaft; andwherein the shift driven gears on the plurality of output shafts comprise;
a first-gear driven gear, a second-gear driven gear, a third-gear driven gear, and a fourth-gear driven gear disposed on the first output shaft, a fifth-gear driven gear and a sixth-gear driven gear disposed on the second output shaft; andwherein a first-third gear synchronizer disposed between the first-gear driven gear and the third-gear driven gear, a second-fourth gear synchronizer disposed between the second-gear driven gear and the fourth-gear driven gear, and a fifth-sixth gear synchronizer disposed between the fifth-gear driven gear and the sixth-gear driven gear. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification