Electrically-controlled pneumatic gear disengagement control method and system and vehicle
A control method and electronic control technology, applied in the direction of transmission control, components with teeth, belts/chains/gears, etc., can solve problems such as failure to remove gears
Active Publication Date: 2021-04-06
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 invention relates to the field of gear control, and discloses an electric control pneumatic gear disengagement control method and system and a vehicle. The method comprises the steps: S1, judging whether a gear disengagement instruction is received or not, and if so, executing the step S2; S2, switching on two electromagnetic valves of an electric control pneumatic actuating mechanism and executing the step S3; S3, detecting and judging whether a piston reaches a neutral gear or not, if yes, completing gear disengagement, and if not, executing the step S4; S4, detecting and judging whether the position of the piston is changed or not, if so, returning to the step S2, and if not, executing the step S5; and S5, switching on the electromagnetic valve, applying force in the forward direction, in the two electromagnetic valves to make the electromagnetic valve applying force in the reverse direction to execute a preset on and off control strategy, increasing the pressure difference of two air chambers of the electric control pneumatic executing mechanism, increasing the gear disengagement force, and executing the step S4 again. The electromagnetic valve capable of applying force reversely can be controlled according to a preset on and off control strategy so as to control gear disengagement force, and the problem of gear disengagement failure is solved.
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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Login to View More IPC IPC(8): F16H61/02
CPCF16H61/0213
Inventor 韩福强邓金涛王磊刘林涛
Owner WEICHAI POWER CO LTD