Vehicle, power transmission system, shift actuator and shift method thereof
A technology of power transmission system and actuator, which is applied in the direction of vehicle components, transmission device control, mechanical equipment, etc. It can solve the problems of poor shifting smoothness and poor driving comfort of vehicles, so as to avoid power interruption and improve shifting smoothness and driving comfort
Active Publication Date: 2021-05-18
SAIC MOTOR
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Problems solved by technology
[0004] However, during the above-mentioned gear switching process, the power transmission system has a power interruption after the low gear is removed and before the high gear is engaged, resulting in poor smoothness of gear shifting and poor driving comfort of the vehicle.
Method used
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[0042] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0043] Please refer to the attached Figure 1-9 ,in, figure 1 It is a structural schematic diagram of a specific embodiment of the shift actuator provided by the present invention; figure 2 It is a schematic diagram of the structure of the power transmission system provided by the present invention in low gear; image 3 for figure 2 Schematic diagram of the cooperation between the first gear train, the second gear train and the shift actuator; Figure 4 It is a schematic diagram of the structure of the power transmission system provided by the present invention when it is in the high gear; Figure 5 for Figure 4 Schematic diagram of the cooperation between the first gear train, the second gear train and the shift ...
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The invention discloses a shifting actuator and a shifting method thereof. The shifting actuator includes a first switching assembly, a second switching assembly, a third switching assembly and an operating assembly. The operating assembly includes a synchronous ring. The shifting actuator has at least three In the first working position, the operating assembly connects the first switching assembly and the third switching assembly; in the second working position, the operating assembly connects the second switching assembly and the third switching assembly; in the third working position, the synchronous ring Connect the first switching component and the third switching component, and connect the second switching component and the third switching component. When shifting gears, before the first shifting assembly (or the second switching assembly) is removed, the second switching assembly (or the first switching assembly) can be put into gear, so that the process of removing and engaging the gears can be overlapped to avoid shifting Power interruption occurs during the shifting process, which improves the smoothness of shifting and driving comfort. The invention also discloses the vehicle and its power transmission system.
Description
technical field [0001] The invention relates to the technical field of vehicle power transmission, in particular to a vehicle, a power transmission system, a shift actuator and a shift method thereof. Background technique [0002] In order to solve the dual pressure of energy and environmental protection in the development of automobiles, electric vehicles have become the focus and focus of the development and research of the automobile industry. The electric drive transmission system is the key to different types of electric vehicles such as pure electric vehicles, plug-in hybrid electric vehicles, non-plug-in hybrid electric vehicles, extended-range electric vehicles and various fuel cell vehicles, but currently lacks uniformity and versatility The design and layout of the electric drive transmission system of various types of electric vehicles has resulted in the fragmentation of the research and development of the electric drive transmission system of various electric ve...
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IPC IPC(8): F16H61/26F16H61/32B60K17/08
CPCB60K17/08F16H61/26F16H61/32
Inventor 李军李宁宁胡赣贾丽华张亚运邹强黄维朱建伟孙晓文柴少彪吴旭陵
Owner SAIC MOTOR