Method for obtaining rotation direction of input shaft of double-clutch gearbox and related device
A technology of rotation direction and dual clutches, which is applied in the field of vehicle engineering, can solve problems such as large deviations in the calculation of synchronizer speed difference signals and adverse effects on the shifting process of dual-clutch gearboxes, so as to avoid calculation errors and improve shifting smoothness and The effect of shift speed
Active Publication Date: 2020-09-29
SAIC MOTOR
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Problems solved by technology
However, the speed difference signal of the synchronizer is not only related to the rotational speed of the first shaft and the second shaft, but also related to the rotation direction of the first shaft and the second shaft. Of the three rotational speed sensors in the box, only the output shaft rotational speed sensor can obtain the rotational speed of the output shaft and identify the rotational direction of the output shaft, which makes the calculation of the speed difference signal of the The different directions of rotation of the shaft and the second shaft lead to large deviations, which adversely affect the shifting process of the dual clutch gearbox
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[0050] As mentioned in the background technology, the dual-clutch gearbox in the prior art is limited by the system structure and cannot realize the acquisition of the rotation direction of the input shaft, so that the calculation of the speed difference of the synchronizer may have a large error under certain working conditions , so that the shift smoothness and shift speed of the dual-clutch gearbox are adversely affected. For example, when the pressure required to push the synchronizer obtained by the calculation of the speed difference of the synchronizer is high, it will cause the dual clutch gearbox to appear stuttering and abnormal noise during the shifting process; when the synchronizer obtained by the calculation of the speed difference of the synchronizer When the pressure required for pushing is small, the shifting time of the dual sharp weapon gearbox will be too long, the power loss will be serious, and even the power will be interrupted in more serious cases.
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The invention discloses a method for obtaining the rotation direction of an input shaft of a double-clutch gearbox and a related device. The method for obtaining the rotation direction of the input shaft of the double-clutch gearbox achieves the obtaining of the rotation direction of the input shaft of the double-clutch gearbox on the basis that the structure of the double-clutch gearbox is not changed, and accurate input shaft rotating speed and input shaft rotating direction are provided for the double-clutch gearbox to calculate the synchronizer speed difference, so that the double-clutch gearbox can calculate the synchronizer speed difference more accurately, and the calculation error of the synchronizer speed difference possibly caused by the unclear rotating direction of the input shaft of the double-clutch gearbox is avoided; and the gear shifting smoothness and the gear shifting speed of the double-clutch gearbox are improved.
Description
technical field [0001] The present application relates to the technical field of vehicle engineering, and more specifically, relates to a method and a related device for obtaining the rotation direction of an input shaft of a dual-clutch gearbox. Background technique [0002] Dual clutch transmission (Dual Clutch Transmission) DCT is different from the general automatic transmission system. It belongs to both manual transmission and automatic transmission. In addition to having the flexibility of manual transmission and automatic transmission In addition to the comfort, it can also provide uninterrupted power output. [0003] The dual-clutch gearbox is formed on the basis of the manual gearbox, and the difference from the manual gearbox is that the two clutches of the dual-clutch gearbox are connected to the two input shafts (the first shaft and the second shaft), and the shifting Both clutch and clutch operations are accomplished through a mechatronic module integrating el...
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IPC IPC(8): F16H63/40F16H61/04
CPCF16H61/04F16H63/40
Inventor 赵智张昌钧
Owner SAIC MOTOR