Method and system for testing surface flatness of friction plate of dual-clutch transmission
A dual-clutch transmission, surface smoothness technology, applied to instruments, measuring devices, etc., can solve problems such as poor linearity of clutch transmission torque, poor surface roughness of friction discs, inconsistent quality control, etc.
Pending Publication Date: 2022-05-13
CHINA FIRST AUTOMOBILE
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Problems solved by technology
[0003] In the current wet dual-clutch automatic transmission scheme, the torque and power transmission route from the engine to the transmission is carried out by controlling the engagement of multi-plate wet clutches. Due to inconsistent quality control in the manufacturing or assembly process, the wet clutch The surface roughness of the friction plate is out of tolerance, so the linearity of the torque transmitted by the clutch is not good, which is manifested at the vehicle level, that is, the torque transmission curve is not good. users complain
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[0034] 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, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings but not all structures.
[0035] Before discussing the exemplary embodiments in more detail, it should be mentioned that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although the flowcharts describe various operations (or steps) as sequential processing, many of the operations may be performed in parallel, concurrently, or simultaneously. In addition, the order of operations can be rearranged. The process may be terminated when its operations are complete, but may also have additional steps not ...
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The embodiment of the invention discloses a method and a system for testing the surface flatness of a friction plate of a dual-clutch transmission. The method comprises the steps that an output end motor is used for collecting the actual output rotating speed of each gear of a transmission at the set driving rotating speed, then the theoretical output rotating speed of each gear at the set driving rotating speed is determined according to the transmission ratio of a transmission assembly at each gear, and then the theoretical output rotating speed of each gear at the set driving rotating speed is determined. Determining the actual rotating speed deviation between the actual output rotating speed and the theoretical output rotating speed under each gear, then comparing the actual rotating speed deviation with a reference threshold value deviation obtained according to a single clutch friction plate flatness test, determining the qualified condition of the surface flatness of the clutch under each gear, and finally determining the qualified condition of the surface flatness of the clutch under each gear. And judging whether the surface flatness of the clutch of the transmission is qualified or not according to the qualified condition of the surface flatness of the clutch under each gear. According to the technical scheme of the embodiment, samples with unqualified friction plate surface flatness can be detected, out-of-tolerance products are prevented from flowing into the market, and the yield of transmission products is further improved.
Description
technical field [0001] The embodiments of the present invention relate to the technical field of clutch friction plate detection, in particular to a method and system for testing the surface roughness of a friction plate of a dual clutch transmission. Background technique [0002] The clutch is an important part to ensure the car starts smoothly, shifts gears smoothly, and handles lightly. For friction clutches, the performance of the friction plate directly affects the service life of the clutch, the stability of the vehicle transmission system and the safety of the vehicle. At home and abroad, the research on the performance of the clutch friction plate has been paid more and more attention, especially in the smoothness of the friction plate. . [0003] In the current wet dual-clutch automatic transmission scheme, the torque and power transmission route from the engine to the transmission is carried out by controlling the engagement of multi-plate wet clutches. Due to inc...
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Login to View More IPC IPC(8): G01B21/30
CPCG01B21/30
Inventor 唐忌唐文强马岩张荣辉
Owner CHINA FIRST AUTOMOBILE