Hydraulic clutch oil charge pressure adjusting method and system and storage medium

Abstract

The invention discloses a hydraulic clutch oil charge pressure adjusting method and system and a storage medium, and relates to a transmission control technology. According to the hydraulic clutch oilcharge pressure adjusting method, when the preset starting condition is met, oil charge is started, and the capacity of an oil charge starting energy accumulator and the capacity of an oil charge ending energy accumulator are recorded; whether the capacity change of the energy accumulator is within a preset capacity change range or not is judged according to the capacity of the oil charge starting energy accumulator and the capacity of the oil charge ending energy accumulator; if the capacity change of the energy accumulator is within the preset capacity change range, the current oil charge pressure is kept; and if the capacity change of the energy accumulator is not within the preset capacity change range, the oil charge pressure is adjusted. According to the method, the oil charge pressure is evaluated and adjusted through the capacity change of the energy accumulator in the oil charge process, clutch pressure sensors do not need to participate in the control process, and for a multi-clutch system, the oil charge pressure self-adjusting process can be achieved under the condition that the number of the clutch pressure sensors is reduced.

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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