Four-speed transmission and four-speed electric assembly
A transmission and assembly technology, applied in the field of automobile transmission, can solve problems such as large space, unfavorable vehicle layout, and occupancy
Active Publication Date: 2021-04-20
BYD CO LTD
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Problems solved by technology
[0004] The technical problem to be solved by the present invention is to provide a four-speed automatic transmission and a four-speed electric assembly for the problem that the existing electric four-speed automatic transmission has a long axial dimension and occupies a large space, which is not conducive to the layout of the whole vehicle. to make
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[0024] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0025] Such as figure 1 As shown, a four-speed electric assembly provided by an embodiment of the present invention includes a motor 2, a differential (not shown in the figure) and a four-speed transmission.
[0026] Such as figure 1 As shown, in the present embodiment, the four-speed transmission includes an input shaft 1, a first layshaft 5, a second layshaft 14, a third layshaft 10, a first / second gear driving gear 3, and a third / fourth gear driving gear 4. First / third gear secondary driving gear 9, second / fourth gear secondary driving gear 18, first gear driven gea...
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The invention provides a four-speed transmission and a four-speed electric assembly, including an input shaft, a first countershaft, a second countershaft, a third countershaft, a first / second gear driving gear, a third / fourth gear driving gear, a / Third-speed secondary driving gear, second / fourth-speed secondary driving gear, first-speed driven gear, second-speed driven gear, third-speed driven gear, fourth-speed driven gear, secondary driven gear, differential Drive gear, first synchronizer and second synchronizer; the first synchronizer is used to control the disengagement and engagement of the first secondary shaft and the first-speed driven gear and the third-speed driven gear, and the first The second synchronizer is used to control the disengagement and engagement of the second auxiliary shaft and the second-speed driven gear and the fourth-speed driven gear. The four-speed transmission and the four-speed electric assembly of the embodiment of the present invention shorten the axial dimension of the four-speed transmission through the form of double countershafts, reduce the volume and mass of the four-speed transmission, and make the four-speed transmission easy to control. and the advantages of compact structure.
Description
technical field [0001] The invention belongs to the technical field of automobile transmission, in particular to a four-speed transmission and a four-speed electric assembly. Background technique [0002] An existing electric four-speed automatic transmission is driven by two electric motors. The transmission includes a first input shaft driven by a first electric motor and provided with a first-speed drive gear and a third-speed drive gear; a second input shaft driven by a second electric motor and provided with a second-speed drive gear and the fourth-speed driving gear; the output shaft is provided with the first synchronizer and the second synchronizer, and the first-speed, second-speed, third-speed, and fourth-speed driven gears meshed with the first-speed to fourth-speed driving gears, wherein The first synchronizer controls the meshing of the first gear and the first driven gear and the third gear and the third driven gear, and the second synchronizer controls the se...
Claims
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IPC IPC(8): F16H3/093F16H3/12F16H57/023F16H37/08B60K17/06B60K17/16
CPCB60K17/06B60K17/16F16H3/093F16H3/12F16H37/0813F16H57/023F16H2003/0935F16H2057/02043F16H2057/02086F16H2057/02091
Inventor 李冬冬汤秋彬
Owner BYD CO LTD