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Two-gear automatic transmission assembly

A technology of automatic transmission and assembly, applied in the field of vehicle transmission system, can solve the problem of long neutral position positioning time, etc., and achieve the effect of shortening the shifting time, short shifting time, and reducing the time of power interruption.

Inactive Publication Date: 2015-07-01
昆山德拉特兰传动科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the mechanical automatic transmission with a three-axis structure takes too long to be positioned in neutral, resulting in too long a power interruption

Method used

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  • Two-gear automatic transmission assembly
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  • Two-gear automatic transmission assembly

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Such as figure 1 and figure 2 As shown, a two-speed automatic transmission assembly includes an input shaft assembly 1, a first intermediate shaft assembly 2, a second intermediate shaft assembly 3, a first intermediate shaft shift actuator 4, a second intermediate shaft shift Gear actuator and differential assembly 6, the input shaft assembly 1 is transmitted to the first countershaft assembly 2 and the second countershaft assembly 3 through gear meshing, the first countershaft assembly 2 and the second intermediate shaft assembly 3 are respectively engaged and transmitted to the differential assembly 6 through gears, and the differential assembly 6 outputs power to the external left and right drive wheels; the first The intermediate shaft shift actuator 4 drives the first intermediate shaft assembly 2 to work in the first gear state or the neutral state under the control of the external transmission controller, and the second intermediate shaft shift actuator is con...

Embodiment 2

[0069] refer to Figure 6 and Figure 7 , this embodiment 2 includes all the technical features of embodiment 1, and the difference is that when the life of the driving gear 12 of the first gear can meet the requirements of all working conditions, the driving gear 12 of the first gear and the driving gear 13 of the second gear can be combined, At this time, the cost of one gear can be reduced, further reducing the manufacturing cost of the transmission.

[0070] To sum up, the present invention proposes a two-speed automatic transmission assembly, which adopts a double countershaft transmission structure, wherein the two gears are arranged on different countershafts, and are driven by two independent shift actuators. , each synchronizer has only two positions, which are the in-gear position and the neutral position respectively. Therefore, during the de-gearing process of the two-speed automatic transmission assembly of the present invention, the executive motor is always dri...

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Abstract

The invention discloses a two-gear automatic transmission assembly which comprises an assembly of an input shaft (11), a first intermediate shaft assembly, a second intermediate shaft assembly, a first intermediate shaft gear shafting execution mechanism, a second intermediate shaft gear shafting execution mechanism and a differential mechanism assembly. Two gears are arranged on different intermediate shafts and driven by the two independent gear shafting execution mechanisms, that is, each synchronizer has only two positions, namely, an on-gear position and a neutral gear position, and therefore in the downshift process of the two-gear automatic transmission assembly, execution motors carry out driving with the maximum power, the downshift time of a transmission is shortest, and the power failure time can be effectively shortened. The transmission has two final ratios through the arrangement structure of the two intermediate shafts, speed ratio distribution of all gears is more flexible, the axial length of the transmission can be reduced, and the space utilization ratio can be effectively improved.

Description

technical field [0001] The invention relates to the field of vehicle transmission systems, in particular to a two-speed automatic transmission assembly applied to pure electric vehicles. Background technique [0002] For electric vehicles, if they completely rely on the speed regulation function of the motor itself to adapt to various working conditions of the vehicle, such as starting on a slope, starting on a flat ground, accelerating, and driving at a constant speed, etc., it will place excessive demands on the motor, resulting in The cost of motors has risen sharply, and the efficiency of motors has been reduced at the same time. Therefore, it has become a consensus to use motors and transmissions to form the electric powertrain of electric vehicles. [0003] Because the motor itself has the ability to adjust the speed, the transmission gears of electric vehicles are usually very few, and for passenger cars, there are generally two. The current transmission types mainly...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H3/087F16H63/30
CPCF16H3/12F16H3/093F16H57/02F16H57/023F16H61/32F16H2061/326
Inventor 袁一卿何祥延张寅涂乐平张秋雨
Owner 昆山德拉特兰传动科技有限公司
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