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Double clutch two-gear automatic transmission with synchronizer and control method thereof

An automatic transmission, dual clutch technology, applied in the direction of transmission control, components with teeth, transmission, etc., can solve the problem that the power and economy of the single-speed reducer cannot be balanced, and ensure safe driving back to the maintenance station. , High work efficiency, the effect of improving work efficiency

Active Publication Date: 2018-12-21
绿传(北京)汽车科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to provide a dual-clutch two-speed automatic transmission for electric vehicles to solve the problem that the power and economy of single-speed reducers cannot be balanced

Method used

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  • Double clutch two-gear automatic transmission with synchronizer and control method thereof
  • Double clutch two-gear automatic transmission with synchronizer and control method thereof
  • Double clutch two-gear automatic transmission with synchronizer and control method thereof

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Embodiment Construction

[0037]In general, the present invention proposes a dual-clutch two-speed automatic transmission with a synchronizer, that is, the transmission adopts two clutches and has two forward gears, namely "first gear" and "second gear", " "First gear" is a low gear, and "second gear" is a high gear. Of course, in actual implementation, the automatic transmission of the present invention can also realize "reverse gear".

[0038] Although the present invention is preferably applied to pure electric vehicles, this does not mean that the present invention cannot be applied to non-pure electric vehicles, such as oil-electric hybrid vehicles or traditional fuel-powered vehicles, and the present invention does not exclude the use, This is because the present invention does not limit what kind of engine provides the power for rotation. In addition, the present invention is not limited to automobiles with more than four wheels. In fact, the present invention does not have any technical barrie...

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PUM

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Abstract

The invention provides a double clutch two-gear automatic transmission with a synchronizer and a control method thereof. The transmission comprises a power receiving part, a power output part, a speedratio keeping part and a speed ratio converting part. The speed ratio keeping part comprises the synchronizer; the speed ratio converting part comprises a first-gear clutch and a second-gear clutch.Both the first-gear clutch and the second-gear clutch have active ends and passive ends. When the first gear or the second gear is kept, the synchronizer is jointed, and the two clutches are separated. When the first gear and the second gear are switched, one of the two clutches is jointed temporarily, and the synchronizer is separate and is then jointed to convert. The clutches are not provided with oil pressures when the gears are not shifted, and the outlet oil pressure of an oil pump can be zero, so that the work efficiency of the transmission is improved. In the gear shifting process, thetwo clutches work simultaneously, and power failure in shifting gears is avoided, so that the dynamic property and the gear shifting smoothness are improved.

Description

technical field [0001] The invention relates to an automatic transmission of an automobile and a control method of the automatic transmission. The automatic transmission of the invention belongs to the dual-clutch automatic transmission with a synchronizer and is mainly used in electric vehicles. Background technique [0002] At present, pure electric vehicles are mainly equipped with a single-speed reducer. Although it has the advantages of simple structure, small size, light weight and low cost, it also has the following disadvantages. First, the performance requirements of the driving motor are relatively high. Since the drive motor is generally a high-speed motor, in order to balance the contradiction between the climbing and acceleration performance requirements and the maximum vehicle speed at medium and low speeds, the drive motor is required to have a higher drive torque, which increases the size and cost of the drive motor. ; Second, the efficiency of the motor wo...

Claims

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Application Information

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IPC IPC(8): F16H3/093F16H61/02
CPCF16H3/093F16H61/0206
Inventor 石刚
Owner 绿传(北京)汽车科技股份有限公司