Method, system and storage medium for adjusting oil filling pressure of hydraulic clutch

Abstract

The invention discloses a hydraulic clutch oil filling pressure adjustment method, system and storage medium, and relates to transmission control technology. In the method for adjusting the oil charging pressure of the hydraulic clutch of the present invention, when the preset start condition is met, the oil charging is started, and the capacity of the accumulator at the beginning of the oil filling and the capacity of the accumulator at the end of the oil filling are recorded; Accumulator capacity and accumulator capacity at the end of oil filling, judge whether the capacity change of the accumulator is within the preset capacity change range; if the capacity change of the accumulator is within the preset capacity change range, then maintain the current oil filling Pressure; if the capacity change of the accumulator is not within the preset capacity change range, the oil filling pressure will be adjusted. The invention uses the capacity change of the accumulator during the oil filling process to evaluate and adjust the oil filling pressure, without the need for the clutch pressure sensor to participate in the control process. For a multi-clutch system, the oil filling pressure self-regulation process can be realized while saving multiple clutch pressure sensors .

Description

technical field [0001] The invention relates to the technical field of transmission control, in particular to a method, a system and a storage medium for adjusting the filling pressure of a hydraulic clutch. Background technique [0002] At present, the hydraulically controlled clutch system commonly used in automobiles includes three hardware parts: clutch, pressure source, and actuator, and four parts in total. Among them, the clutch is the most important part of the system, and its function is to cut off or transmit power. The actuator is the execution part in the system, and the pressure source provides pressure to fill the actuator with oil to establish the execution pressure to operate the separation or combination of the clutch. The actuator executes the engagement control process such as figure 1 As shown, the better the oil filling, that is, the closer the oil filling volume is to the size of the oil chamber, the better the response of the pressure control process ...

AI Technical Summary

Problems solved by technology

[0003] For hydraulic clutches, the oil filling effect directly affects the pressure response of the actuator, and due to the following two reasons, there are differences in the oil filling pressure required for the same oil filling amount and the same time between different individuals of the same product: (1) Production differences

Due to the objective existence of dimensional tolerances in the production process of each component of the hardware, there are differences in the engagement force / separation force of the individual actuators, which in turn leads to different oil filling pressures required for the same oil filling time

(2) Wear and tear

Due to the above reasons, the clutch actuators cannot be uniformly filled under the same oil filling pressure, resulting in some individuals having better oil filling effects, and the corresponding clutch control process has better performance, while some individuals have better oil filling effects. Poor, the corresponding clutch control process performs poorly

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