A brake pipe parking emptying device and a control method thereof

Abstract

The application discloses a kind of brake pipeline parking emptying device and control method thereof, including ECU controller for whole vehicle control hub, key electricity for controlling whole vehicle power switch and air compressor for supplying air to whole vehicle brake pipeline;Air compressor is connected with dryer by gas path pipe, the outlet of dryer is connected with dehumidification cylinder by gas path pipe, and the dehumidification cylinder is connected with four circuits by one-way valve;Four circuits are connected with the gas storage cylinder of multiple brake gas storage of whole vehicle by gas path pipe, and the gas storage cylinder is connected with pressure relief valve one, and the control switch for controlling the opening and closing of pressure relief valve one is connected on pressure relief valve one;Dehumidification cylinder is connected with pressure relief valve two by gas path pipe, and pressure relief valve two is connected with the gas path pipe between air compressor and dryer;ECU controller is connected with key electricity, air compressor, pressure relief valve one, control switch and pressure relief valve two by circuit respectively;The application can automatically empty the remaining gas in brake gas path pipe when electric motor coach stops.

Description

Technical Field

[0001] This invention relates to the field of brake venting technology for electric buses, specifically to a brake line parking venting device and its control method. Background Technology

[0002] Electric buses primarily refer to pure electric buses that operate entirely on electricity. These buses are characterized by low noise, high driving stability, and zero emissions. Electric buses are powered by onboard batteries or cable-based power supplies. They offer good power performance, a continuous driving range of up to 500 kilometers, long battery life, low cost, and good integration with the overall vehicle system.

[0003] Most large pure electric buses in my country use air brake lines. Moisture in the air brake lines can affect the service life of valves and brakes. In cold weather, the moisture in the lines can freeze, causing ice blockage in the air lines, resulting in brake failure and affecting driving safety. Summary of the Invention

[0004] The purpose of this invention is to provide a brake line venting device and its control method, so that the remaining gas in the brake air line can be automatically vented when the electric bus stops.

[0005] The objective of this invention can be achieved through the following technical solutions:

[0006] A brake line parking venting device includes an ECU controller for the vehicle control center, a key switch for controlling the vehicle power switch, and an air compressor for supplying air to the vehicle brake line; the air compressor is connected to a dryer via an air pipe, the air outlet of the dryer is connected to a dehumidifier via an air pipe, and the dehumidifier is connected to a four-circuit system via a one-way valve.

[0007] The four circuits are connected to multiple brake air reservoirs of the vehicle through air pipes. Each air reservoir is connected to a pressure relief valve, and a control switch for controlling the opening and closing of the pressure relief valve is connected to the pressure relief valve.

[0008] The dehumidifier cylinder is connected to a pressure relief valve two via an air pipe, and the pressure relief valve two is connected to the air pipe between the air compressor and the dryer.

[0009] The ECU controller is connected to the key switch, air compressor, pressure relief valve one, control switch and pressure relief valve two via circuits.

[0010] As a further aspect of the present invention: a pressure sensor is connected to the dryer, and the pressure sensor is connected to the circuit ECU controller.

[0011] As a further aspect of the present invention: a pressure regulating valve is provided inside the dryer, and the pressure regulating valve is used to control the maximum pressure of the entire vehicle.

[0012] As a further aspect of the present invention, the dehumidifier cylinder is provided with a spiral pipeline structure.

[0013] As a further aspect of the present invention: a control method for a brake line parking venting device, the control method including key power-on state control, key power-off state control, and long-term parking state control.

[0014] As a further aspect of the present invention, the specific process of the key-controlled power state is as follows: the driver powers on the vehicle using the key, and the ECU controller confirms whether the air compressor has started based on the signal fed back by the pressure sensor. If the air compressor has not started, it waits for the vehicle to use air before starting; if the air compressor has started, it maintains the air supply state. Until the air pressure in the air tank reaches the preset air pressure threshold of the dryer, the pressure relief valve 2 vents the gas in the air pipe between the dryer and the air compressor. The pressure sensor receives the air pressure signal, converts the air pressure signal into an electrical signal, and transmits it to the ECU controller. The ECU controller then controls the air compressor to stop.

[0015] As a further aspect of the present invention, the specific process of the key power-off state control is as follows: the driver controls the vehicle to power on via the key, and the ECU controller confirms whether the air compressor has started based on the signal fed back by the pressure sensor. If the air compressor has not started, it waits for the vehicle to use air before starting; if the air compressor has started, it maintains the air supply state. When the key power is turned off, the air compressor power is interrupted, the air compressor stops supplying air, and the ECU controller instructs the pressure relief valve two to de-energize and vent the gas, thereby venting the gas in all air pipes after the one-way valve.

[0016] As a further aspect of the present invention, the specific process of controlling the long-term parking status is as follows: if long-term parking is required, the driver presses the venting button, and the ECU controller instructs the pressure relief valve one and pressure relief valve two to de-energize and vent, so that the gas in all air pipes of the vehicle is vented.

[0017] The beneficial effects of this invention are as follows: When the vehicle is powered on, it ensures a stable air supply to the air tank. After the air supply is completed, the gas in the air supply line can be discharged to prevent the air supply line from freezing. When the vehicle is powered off, the air supply line is vented through the pressure relief valve. When the vehicle is parked, all the gas in the brake lines of the entire vehicle body is discharged, effectively preventing water vapor in the air brake lines from affecting the service life of valves and brakes. It also prevents the water in the lines from freezing in cold weather, which could lead to ice blockage in the air lines and brake failure. Attached Figure Description

[0018] The invention will now be further described with reference to the accompanying drawings.

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0020] In the diagram: 1. Key switch; 2. Air compressor; 3. Dryer; 4. Dehumidifier cylinder; 5. Check valve; 6. Four-circuit circuit; 7. Air tank; 8. Pressure relief valve one; 9. Control switch; 10. Pressure sensor; 11. Pressure relief valve two; 12. ECU controller. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Please see Figure 1 As shown, this invention is a brake line venting device, including an ECU controller 12 for the vehicle control center, a key switch 1 for controlling the vehicle's power switch, and an air compressor 2 for supplying air to the vehicle's brake lines. The air compressor 2 is connected to a dryer 3 via an air pipe. The outlet of the dryer 3 is connected to a dehumidifier 4 via an air pipe. The dehumidifier 4 is connected to a four-loop circuit 6 via a one-way valve 5. The one-way valve 5 provides unidirectional airflow, preventing the normal air supply to the vehicle from being depleted when venting air from the dehumidifier 4. The four-loop circuit 6... The air cylinder 4 is connected to multiple brake air reservoirs 7 of the vehicle via an air pipe. The air reservoir 7 is used to store compressed air. A pressure relief valve 8 is connected to the air reservoir 7. A control switch 9 is connected to the pressure relief valve 8 to control its opening and closing. The dehumidification cylinder 4 is connected to a pressure relief valve 11 via an air pipe. The pressure relief valve 11 is connected to the air pipe between the air compressor 2 and the dryer 3. The ECU controller 12 is connected to the key ignition 1, the air compressor 2, the pressure relief valve 8, the control switch 9, and the pressure relief valve 11 via a circuit.

[0023] A pressure sensor 10 is connected to the dryer 3. The pressure sensor 10 is connected to the circuit ECU controller 12. The pressure sensor 10 is used to sense the air pressure inside the dryer 3 and convert the pressure signal into an electrical signal and transmit it to the ECU controller 12. The ECU controller 12 controls the air compressor 2 that supplies air and the pressure relief valve 8 and pressure relief valve 11 that discharge air through the signal fed back by the pressure sensor 10.

[0024] The dryer 3 is equipped with a pressure regulating valve, which is used to control the maximum pressure of the vehicle. The pressure regulating valve can preset the maximum air pressure threshold of the dryer 3. This maximum air pressure threshold is the set value of the pressure in the vehicle's brake air line. When the air pressure in the air tank 7 reaches the set value, the air compressor 2 stops supplying air to the air line.

[0025] The dehumidifier cylinder 4 is equipped with a spiral tube structure to re-condense the remaining small amount of water vapor in the air coming out of the dryer 3 and discharge it into the atmosphere.

[0026] A control method for a brake line parking venting device, the control method including key-on state control, key-off state control, and long-term parking state control.

[0027] The specific process of key-on control is as follows: The driver controls the vehicle to power on via key 1. The ECU controller 12 confirms whether the air compressor 2 is started based on the signal fed back by the pressure sensor 10. If the air compressor 2 is not started, it waits for the vehicle to use air before starting. If the air compressor 2 is already started, it maintains the air supply state. Until the air pressure in the air tank 7 reaches the preset air pressure threshold of the dryer 3, the pressure relief valve 11 vents the gas in the air pipe between the dryer 3 and the air compressor 2. The pressure sensor 10 receives the air pressure signal, converts the air pressure signal into an electrical signal, and transmits it to the ECU controller 12. The ECU controller 12 then controls the air compressor 2 to stop.

[0028] The specific process of controlling the power-off state of key 1 is as follows: The driver controls the vehicle to power on via key 1. The ECU controller 12 confirms whether the air compressor 2 is started based on the signal fed back by the pressure sensor 10. If the air compressor 2 is not started, it waits for the whole vehicle to use air before starting. If the air compressor 2 is already started, it maintains the air supply state. When key 1 is de-energized, the power supply to the air compressor 2 is interrupted, the air compressor 2 stops supplying air, and the ECU controller 12 instructs the pressure relief valve 11 to de-energize and vent the gas, emptying the gas in all air pipes after the one-way valve 5.

[0029] The specific procedure for controlling long-term parking status is as follows: If long-term parking is required, the driver presses the venting button, and the ECU controller 12 instructs the pressure relief valve 8 and pressure relief valve 11 to de-energize and vent, so that the gas in all air lines of the vehicle is vented.

[0030] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. A brake line parking venting device, characterized in that, It includes an ECU controller (12) for the vehicle control center, a key switch (1) for controlling the vehicle power switch, and an air compressor (2) for supplying air to the vehicle brake lines; the air compressor (2) is connected to a dryer (3) through an air pipe, the outlet of the dryer (3) is connected to a dehumidifier cylinder (4) through an air pipe, and the dehumidifier cylinder (4) is connected to a four-circuit (6) through a one-way valve (5); The four circuits (6) are connected to multiple brake air storage cylinders (7) of the vehicle through air pipes. A pressure relief valve (8) is connected to the air storage cylinder (7). A control switch (9) for controlling the opening and closing of the pressure relief valve (8) is connected to the pressure relief valve (8). The dehumidification cylinder (4) is connected to a pressure relief valve (11) via an air pipe, and the pressure relief valve (11) is connected to the air pipe between the air compressor (2) and the dryer (3). The ECU controller (12) is connected to the key (1), air compressor (2), pressure relief valve one (8), control switch (9) and pressure relief valve two (11) respectively via circuits.

2. A brake line parking venting device according to claim 1, characterized in that, A pressure sensor (10) is connected to the dryer (3), and the pressure sensor (10) is connected to the circuit ECU controller (12).

3. A brake line parking venting device according to claim 1, characterized in that, The dryer (3) is equipped with a pressure regulating valve, which is used to control the maximum pressure of the whole vehicle.

4. A brake line parking venting device according to claim 1, characterized in that, The dehumidifier cylinder (4) is equipped with a spiral pipeline structure.

5. The control method for a brake line parking venting device according to claim 1, characterized in that, The control method includes key power-on control, key power-off control, and long-term parking control.

6. The control method for a brake line parking venting device according to claim 5, characterized in that, The specific process of key-controlled power state is as follows: the driver controls the vehicle to power on by key (1), the ECU controller (12) confirms whether the air compressor (2) is started according to the signal fed back by the pressure sensor (10). If the air compressor (2) is not started, it waits for the whole vehicle to use air before starting. If the air compressor (2) is started, it maintains the air supply state. Until the air pressure in the air tank (7) reaches the preset air pressure threshold of the dryer (3), the pressure relief valve (11) empties the gas in the air pipe between the dryer (3) and the air compressor (2). The pressure sensor (10) receives the air pressure signal and converts the air pressure signal into an electrical signal and transmits it to the ECU controller (12). The ECU controller (12) controls the air compressor (2) to stop.

7. The control method for a brake line parking venting device according to claim 5, characterized in that, The specific process of controlling the power-off state of the key (1) is as follows: The driver controls the vehicle to power on through the key (1), and the ECU controller (12) confirms whether the air compressor (2) is started based on the signal fed back by the pressure sensor (10). If the air compressor (2) is not started, it waits for the whole vehicle to use air before starting. If the air compressor (2) is started, it maintains the air supply state. When the key (1) is de-energized, the power supply to the air compressor (2) is interrupted, the air compressor (2) stops supplying air, and the ECU controller (12) instructs the pressure relief valve (11) to de-energize and exhaust the gas, thereby venting the gas in all air pipes after the one-way valve (5).

8. The control method for a brake line parking venting device according to claim 5, characterized in that, The specific process of controlling the long-term parking status is as follows: If long-term parking is required, the driver presses the venting button, and the ECU controller (12) instructs the pressure relief valve one (8) and pressure relief valve two (11) to de-energize and vent, so that the gas in all the air pipes of the vehicle is vented.

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