An electro-pneumatic gear removal control method, system and vehicle
A control method and electronic control technology, applied in the direction of transmission control, toothed components, belts/chains/gears, etc., can solve problems such as failure to remove gears, achieve the effect of improving gear removal force and solving failure of gear removal
Active Publication Date: 2022-04-26
WEICHAI POWER CO LTD
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Problems solved by technology
[0005] The purpose of the present invention is to propose an electro-pneumatic gear removal control method to solve the problem of gear removal failure
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[0043] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods.
[0044] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected" and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrated ; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal communication of two components or the interaction relationship between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific si...
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The present invention relates to the field of gear position control, and discloses an electro-pneumatic gear removal control method, system and vehicle, including: step S1, judging whether a gear removal instruction is received; if so, executing step S2; step S2, turning on the electronically controlled For the two solenoid valves of the pneumatic actuator, perform step S3; step S3, detect and determine whether the piston has reached the neutral position; if so, complete the removal of gear; if not, perform step S4; step S4, detect and determine whether the position of the piston has changed; if , then return to step S2; if not, then execute step S5; step S5, open the solenoid valve with positive force among the two solenoid valves, make the solenoid valve with reverse force execute the preset opening and closing control strategy, increase the electric control The pressure difference between the two air chambers of the pneumatic actuator increases the gear removal force, and returns to step S4. It can control the solenoid valve with reverse force according to the preset opening and closing control strategy to control the force of removing the gear, which solves the problem of failure to remove the gear.
Description
technical field [0001] The present invention relates to the technical field of gear control, in particular to an electro-pneumatic gear removal control method, system and vehicle. Background technique [0002] Practice controlling the speed of the vehicle through gear shifting while the vehicle is moving. Electronic Pneumatics Shift (EPS for short) is a gear control technology developed in recent years, which can realize the speed change control of the gearbox. [0003] In the process of shifting gears, it is necessary to perform the step of removing gears, and when removing gears, it returns to neutral gear. For the electro-pneumatic gear shift actuator, the gear shift control of the gearbox is generally achieved by controlling the simultaneous action of two shift solenoid valves. The specific diagram of the shift actuator is as follows: figure 1 as shown, figure 1 Among them, (a) is the parking position of the even-numbered gear piston; (b) is the parking position of t...
Claims
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IPC IPC(8): F16H61/02
CPCF16H61/0213
Inventor 韩福强邓金涛王磊刘林涛
Owner WEICHAI POWER CO LTD