A method, device, equipment and storage medium for processing soft braking of a vehicle

Abstract

The present invention discloses a method, device, equipment and storage medium for processing a vehicle with a soft brake. The method comprises the following steps: when all the brake pipe connection points, the pressure building rate of the master cylinder pressure, the ESC valve body, the vacuum pumping equipment, the brake fluid adding equipment and the process parameters of the brake fluid adding in the brake circuit of the newly-offline vehicle are normal and there is gas in the brake circuit of the newly-offline vehicle, it is determined that the gas exists in the ESC circuit; it is checked whether there is gas in the normally open service brake circuit in the ESC circuit, and after detecting the service brake circuit, it is checked whether there is gas in the normally closed pressure-increasing and pressure-reducing brake circuit in the ESC circuit, and the gas in the service brake circuit and / or the pressure-increasing and pressure-reducing brake circuit is exhausted. The present invention can lock the gas storage position and determine the cause of gas generation, and at the same time exhaust the brake circuit in which the gas has been detected, thereby ensuring the driving safety of the user, improving the driving experience of the user, and eliminating the hidden dangers of road safety.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle chassis braking, and in particular to a method, device, equipment and storage medium for processing soft braking of a vehicle. Background Art

[0002] With the development of the automobile industry, cars have become a part of people's lives. However, the development of automobile technology must be based on the safety of the entire vehicle. There are often news reports of traffic accidents caused by brake failure. At present, the braking system of a vehicle involves many parts. Any failure of a part will cause the vehicle's brakes to be soft and difficult to troubleshoot. The reason for the soft brake is that there is a failure of a part in the braking system, or gas is mixed in when the brake fluid is filled, which causes the whole vehicle to brake softly.

[0003] Therefore, how to solve the problem of soft braking of the whole vehicle is a technical problem that needs to be solved urgently. Summary of the invention

[0004] The main purpose of the present invention is to provide a method, device, equipment and storage medium for processing soft vehicle brakes, which can lock the gas storage position and determine the cause of gas generation, and at the same time vent the brake circuit where gas has been detected, thereby ensuring the user's driving safety, improving the user's driving experience, and eliminating road safety hazards.

[0005] In a first aspect, the present application provides a method for processing a vehicle with soft brakes, the method comprising the steps of:

[0006] When all brake pipe connection points in the vehicle's brake circuit, the master cylinder pressure build-up rate, the ESC valve body, the vacuum pumping equipment, the brake fluid adding equipment, and the brake fluid adding process parameters are normal and there is gas in the vehicle's brake circuit, it is determined that gas exists in the ESC circuit;

[0007] Checking whether there is gas in a normally open service brake circuit in the ESC circuit, and after checking the service brake circuit, checking whether there is gas in a normally closed pressure-increasing and pressure-relieving brake circuit in the ESC circuit;

[0008] Bleed the service brake circuit and / or the boost / relief brake circuit.

[0009] In combination with the first aspect above, as an optional implementation method, by inputting a preset volume of brake fluid into the service brake circuit and / or the pressure-boosting and pressure-releasing brake circuit, when intermittent brake fluid is discharged or bubbles exist, it is determined that there is gas in the service brake circuit and / or the pressure-boosting and pressure-releasing brake circuit.

[0010] In combination with the first aspect above, as an optional implementation method, the gas in the service brake circuit and the pressure-increasing and reducing brake circuit is discharged into the vehicle brake circuit by inputting brake fluid, and the vehicle brake circuit is exhausted.

[0011] In combination with the first aspect above, as an optional implementation method, it is detected according to the ESC regulatory line whether the gas in the braking circuit of the whole vehicle is completely discharged. When it is determined that the gas in the braking circuit of the whole vehicle is not completely discharged, the braking circuit of the whole vehicle is secondary exhausted by inputting brake fluid.

[0012] In combination with the first aspect above, as an optional implementation method, when the pressure building rate in the braking circuit of the whole vehicle is lower than a set value, it is determined that there is gas in the braking circuit of the whole vehicle.

[0013] In combination with the first aspect above, as an optional implementation method, when all brake pipe connection points in the brake circuit are normal and the brake pedal is soft, it is determined that there is gas in the brake circuit of the entire vehicle.

[0014] In combination with the first aspect above, as an optional implementation method, the components in the vehicle braking circuit include: brake lines, master cylinders, ESC valve bodies, vacuum equipment, brake fluid adding equipment, and brake fluid adding parameter verification equipment.

[0015] In a second aspect, the present application provides a device for processing a vehicle with soft brakes, the device comprising:

[0016] A determination module, which is used to determine that gas exists in the ESC circuit when all brake pipe connection points in the vehicle brake circuit, the pressure building rate of the master cylinder pressure, the ESC valve body, the vacuum pumping equipment, the brake fluid adding equipment and the brake fluid adding process parameters are normal and there is gas in the vehicle brake circuit;

[0017] a testing module, which is used to test whether there is gas in a normally open service brake circuit in the ESC circuit, and after testing the service brake circuit, test whether there is gas in a normally closed pressure increase / relief brake circuit in the ESC circuit;

[0018] The processing module is used to discharge the gas in the service brake circuit and / or the pressure increase and relief brake circuit.

[0019] In a third aspect, the present application further provides an electronic device, comprising: a processor; a memory, wherein the memory stores computer-readable instructions, and when the computer-readable instructions are executed by the processor, the method described in any one of the first aspects is implemented.

[0020] In a fourth aspect, the present application further provides a computer-readable storage medium storing computer program instructions, which, when executed by a computer, enables the computer to execute any of the methods described in the first aspect.

[0021] The present application provides a method, device, equipment and storage medium for processing soft vehicle brakes, the method comprising the following steps: when all brake line connection points in the whole vehicle brake circuit, the pressure building rate of the master cylinder pressure, the ESC valve body, the vacuum equipment, the brake fluid adding equipment and the process parameters of the brake fluid adding are normal and there is gas in the whole vehicle brake circuit, determining that gas exists in the ESC circuit; checking whether there is gas in the normally open service brake circuit in the ESC circuit, and after detecting the service brake circuit, checking whether there is gas in the normally closed pressure-increasing and pressure-relieving brake circuit in the ESC circuit; exhausting the gas in the service brake circuit and / or the pressure-increasing and pressure-relieving brake circuit, being able to lock the gas storage position and determine the cause of gas generation, and at the same time exhausting the brake circuit in which gas has been detected, thereby ensuring the user's driving safety, improving the user's driving experience, and eliminating road safety hazards.

[0022] It is to be understood that the foregoing general description and the following detailed description are exemplary only and are not restrictive of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0024] Figure 1 A flow chart of a method for processing soft braking of a vehicle provided in an embodiment of the present application;

[0025] Figure 2 A schematic diagram of a vehicle soft brake processing device provided in an embodiment of the present application;

[0026] Figure 3 This is a schematic diagram of the ESC circuit structure provided in the embodiments of the present application;

[0027] Figure 4 A schematic diagram of an electronic device provided in an embodiment of the present application;

[0028] Figure 5 A schematic diagram of a computer-readable program medium provided in an embodiment of the present application. DETAILED DESCRIPTION

[0029] Here, exemplary embodiments will be described in detail, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Instead, they are merely examples of devices and methods consistent with some aspects of the present invention as detailed in the appended claims.

[0030] Furthermore, the drawings are only schematic illustrations of the present disclosure and are not necessarily drawn to scale. Some of the blocks shown in the drawings are functional entities and do not necessarily correspond to physically or logically separate entities.

[0031] The embodiments of the present application provide a method, device, equipment and storage medium for processing soft vehicle brakes, which can lock the gas storage position and determine the cause of gas generation, and at the same time vent the brake circuit where gas has been detected, thereby ensuring the user's driving safety, improving the user's driving experience, and eliminating road safety hazards.

[0032] In order to achieve the above technical effects, the general idea of ​​this application is as follows:

[0033] A method for processing a vehicle with soft braking, the method comprising the steps of:

[0034] S101: When all brake pipe connection points in the vehicle's brake circuit, the master cylinder pressure build-up rate, the ESC valve body, the vacuum pumping equipment, the brake fluid adding equipment, and the brake fluid adding process parameters are normal and there is gas in the vehicle's brake circuit, it is determined that gas exists in the ESC circuit.

[0035] S102: Check whether there is gas in the normally open service brake circuit in the ESC circuit, and after checking the service brake circuit, check whether there is gas in the normally closed pressure increase and reduction brake circuit in the ESC circuit.

[0036] S103: Discharge the gas in the service brake circuit and / or the pressure-increasing and reducing brake circuit.

[0037] The embodiments of the present application are further described in detail below in conjunction with the accompanying drawings.

[0038] Reference Figure 1 , Figure 1 FIG. 1 is a flow chart of a method for processing a vehicle with soft brakes provided by the present invention, as shown in FIG. Figure 1 As shown, the method comprises the steps of:

[0039] Step S101: When all brake line connection points in the vehicle's brake circuit, the master cylinder pressure build-up rate, the ESC valve body, the vacuum pumping equipment, the brake fluid adding equipment, and the brake fluid adding process parameters are normal and there is gas in the vehicle's brake circuit, it is determined that gas exists in the ESC circuit.

[0040] Specifically, firstly, all the brake pipe connection points of the vehicle are checked for leaks, that is, all 22 connection points of the vehicle are checked for leaks. The checking method is: start the vehicle and put it in N gear, two people work together, one person continuously steps on the brake pedal, and the other person checks in the front cabin and the four-wheel pipe connection to see if there is any brake fluid leakage during the pedaling process. If there is a leak at any of the above points, brake fluid will leak from these points during the process of stepping on the brake pedal, which can be easily distinguished by the naked eye.

[0041] After checking that all brake line connection points are free of faults, the vehicle is started and placed in N gear. One person uses the DSA device (software that is directly plugged into the vehicle's OBD diagnostic port and uses a computer to read the brake master cylinder pressure building data) to read the master cylinder pressure building rate during the on-site braking process. If the pressure building rate is significantly lower than that of a normal vehicle and can eventually reach the same pressure, it means that the brakes are soft and there is no leak in the brake system, but rather gas in the brake system.

[0042] By establishing the communication between the VCATS device and the ESC of the faulty vehicle, the system pipeline gas is checked from the left front, right rear, right front, and left rear in turn, and it is confirmed in the process that one or several circuits do have gas. It can be understood that by checking the left front, right rear, right front, and left rear system pipeline gas, it is further confirmed that there is gas in the brake circuit.

[0043] It is necessary to determine the cause of the gas and whether there are any opening and closing faults in the valve bodies inside the ESC. The valve bodies inside the ESC include: 4 AVs (liquid outlet valves normally closed), 4 EVs (liquid inlet valves normally open), 2 USVs (pilot valves normally open), 2 HSVs (high pressure valves normally closed), and 2 low pressure accumulators. Send opening and closing instructions to the USV valve, HSV valve, EV valve, and AV valve of the ESC in turn to confirm whether the valve bodies of the ESC can open and close normally.

[0044] When the ESC valve bodies can open and close normally, check the key components of the vacuum and filling equipment to confirm whether there are any abnormalities in the vacuum system capacity. Specifically: check whether the built-in valve of the equipment gun head is stuck, whether the OBD communication line has a loose connection, the sealing condition of the liquid supply pipeline, whether the vacuum pressure sensor has zero point drift, whether the vacuum pump's vacuum capacity has decreased, etc.

[0045] When the vacuuming and filling equipment are normal, confirm whether the process parameters such as pre-vacuuming, vacuum 1, vacuum pressure holding, vacuum inspection, vacuum 2, etc. are set reasonably.

[0046] When the brake line connection point, the pressure building rate of the master cylinder pressure, the ESC valve body, the vacuum equipment, the brake fluid adding equipment and the process parameters of the brake fluid adding are all normal, and when the pressure building rate in the brake circuit of the whole vehicle is lower than the set value, it is determined that there is gas in the brake circuit of the whole vehicle, it is determined that gas exists in the ESC circuit.

[0047] In addition, there are generally two reasons for soft braking. One is that there is a fault in the components of the braking system, and the other is that gas is mixed in when filling the brake fluid. When checking that the components and the filling process parameters have not changed, it is determined that gas exists in the ESC circuit.

[0048] It should be noted that there are two circuits in the ESC circuit, one is the circuit through which the brake fluid passes when we drive normally, and the other is the circuit through which the ABS works. That is, the circuit through which the brake fluid passes when the ABS is activated, which is composed of the service brake circuit, the pressure increase and relief brake circuit and the low-pressure accumulator.

[0049] If the device and the vehicle's ESC do not communicate, the circuit composed of the boost and release and low-pressure accumulator is always closed, and the gas inside cannot be pumped out. Open this circuit according to the communication filling. If there is no communication, the boost and release brake circuit is normally closed.

[0050] It can be understood that the normally open service brake circuit and the normally closed pressure-increasing and pressure-relieving brake circuit are connected through a solenoid valve. When the filling device communicates with the vehicle, the solenoid valve opens. At this time, the two-part circuit of the ESC module is connected with the rest of the brake circuit of the vehicle's braking system. When the filling device does not communicate with the vehicle, the solenoid valve is closed. The service brake circuit and the pressure-increasing and pressure-relieving brake circuit are two independent circuits in the ESC circuit. It can be understood that the ESC circuit is a brake circuit.

[0051] Optionally, inspect all brake line connection points of the vehicle to determine whether there is obvious leakage at the brake line connection points. If not, determine the pressure building rate of the master cylinder pressure during the vehicle's in-situ braking process, and determine whether there is gas in the brake system. If so, inspect the gas in the system from the left front, right rear, right front, left and right in turn, lock the gas and determine the circuit where the gas is located, determine whether there is an opening and closing fault in each valve body inside the ESC, inspect the vacuum and filling equipment to determine whether there is an abnormality. If not, determine whether the process parameter settings have changed. If not, determine whether there is gas in the brake circuit of the vehicle through the brake pedal. It can be understood that when the components and parameters in the brake circuit of the vehicle are normal and the brake pedal is soft, there is gas in the brake circuit of the vehicle.

[0052] It can be understood that when all brake line connection points in the vehicle's brake circuit, the pressure building rate of the master cylinder pressure, the ESC valve body, the vacuum equipment, the brake fluid adding equipment and the process parameters of the brake fluid adding are normal and the presence of gas in the vehicle's brake circuit is determined by the pressure building rate or the state of the brake pedal, and it is determined that the gas exists in the ESC circuit, it should be noted that the reason for the existence of the ESC circuit is that due to the structural characteristics of the ESC circuit, the vacuum step before adding brake fluid does not completely extract the air in the brake connected to the service brake circuit in the ESC circuit, and secondly, the gas in the low-pressure accumulator connected to the boost and relief brake circuit in the ESC circuit is completely extracted. In addition, the presence of gas in the boost and relief brake circuit is due to the interaction time of VCATS, the vacuum filling equipment and ESC, which squeezes the equipment vacuum time, resulting in the equipment vacuum not reaching the set vacuum time, which in turn leads to the presence of gas in the boost and relief brake circuit.

[0053] It is understandable that VCATS is a handheld device, vacuum filling is a line-side device, and ESC is a vehicle part. To vacuum fill, these three must be connected. Assuming that the vacuum time is set to 5s, the actual vacuum time after receiving the command is 2s. This means that the interaction time of VCATS, vacuum filling equipment, and ESC squeezes the vacuum time of the equipment, which in turn causes the gas in the boost and relief brake circuit to not be completely extracted.

[0054] It should be noted that when a new car is equipped with brakes or calipers, brake lines, ESC, etc., there is air inside. To add brake fluid to the car, the air in the brake system connected by these parts must be pumped out first. Only after pumping out can the brake fluid be added, otherwise there will be air mixed in, resulting in poor braking effect.

[0055] Step S102: Check whether there is gas in the normally open service brake circuit in the ESC circuit, and after detecting the service brake circuit, check whether there is gas in the normally closed pressure-increasing and pressure-relieving brake circuit in the ESC circuit.

[0056] Specifically, when it is determined that gas exists in the ESC circuit, the ESC circuit is detected, wherein the ESC circuit includes a service brake circuit and a pressure-increasing and releasing brake circuit, wherein the service brake circuit is connected to the brake, and the pressure-increasing and releasing brake circuit is connected to the low-pressure accumulator. It can be understood that the internal structure of the ESC is special, so the ESC is divided into a service brake circuit part and a pressure-increasing and releasing circuit, wherein the service brake circuit in the ESC circuit is normally open, and the pressure-increasing and releasing circuit in the ESC circuit is normally closed, wherein there is a valve between the service brake circuit and the pressure-increasing and releasing circuit in the ESC circuit, as described below. When it is determined that gas exists in the ESC circuit, First, check the service brake circuit in the ESC circuit and the brakes (calipers) connected to the service brake circuit to determine whether there is gas. The judgment method is: input 1.5 times the brake fluid of the whole vehicle's brake circuit into the service brake circuit. When the discharged brake fluid is intermittent, or there are bubbles in the brake line visible to the naked eye, it is determined that there is gas in the service brake circuit and the brakes in the ESC circuit. It should be noted that to verify whether there is gas in the service brake circuit, it is mainly to check the brakes connected to the service brake circuit. Due to the structural characteristics of the brake, there are many corners, and when the air is pumped out, it is not necessarily possible to pump it out completely.

[0057] It should be noted that the vehicle's braking circuit includes: booster and master cylinder, brake lines, ESC module, and brake calipers. The service brake circuit and pressure-increasing and pressure-relief brake circuit in the ESC circuit are connected to the brake lines, booster and master cylinder, and calipers when working.

[0058] After detecting the driving circuit in the ESC circuit, open the valves of the driving circuit and the pressure-boosting and pressure-releasing circuit, and inspect the pressure-boosting and pressure-releasing brake circuit by inputting brake fluid. The inspection method is: input 1.5 times the brake fluid of the whole vehicle's brake circuit into the pressure-boosting and pressure-releasing brake circuit. When the discharged brake fluid is intermittent, or there are bubbles in the brake line visible to the naked eye, it is determined that there is gas in the pressure-boosting and pressure-releasing brake circuit in the ESC circuit and in the brake. It should be noted that the pressure-boosting and pressure-releasing brake circuit is connected to the low-pressure accumulator. When there is gas in the pressure-boosting and pressure-releasing circuit, there is also gas in the low-pressure accumulator.

[0059] In one embodiment, the normally open service brake circuit in the ESC circuit and the brake pipeline (including brake hose and brake hard pipe) and brake caliper connected thereto are first checked to determine whether gas exists in the above parts. If gas does not exist in the above parts, the ESC is communicated to open the normally closed solenoid valve, and the normally closed pressure increase and release circuit and low-pressure accumulator are connected to the brake pipeline (including brake hose and brake hard pipe) and brake caliper of the whole vehicle. If gas is discharged through this part of the equipment, then the gas is bound to exist in the pressure increase and release circuit and low-pressure accumulator in the ESC circuit.

[0060] Step S103: Discharge the gas in the service brake circuit and / or the pressure-increasing and reducing brake circuit.

[0061] Specifically, when it is determined that there is gas in the ESC circuit, the gas in the service brake circuit is discharged into the vehicle brake circuit by inputting brake fluid, and then the valve between the service brake circuit and the pressure increase and relief circuit is opened to exhaust the pressure increase and relief circuit, and the gas in the pressure increase and relief circuit is discharged into the vehicle brake circuit, and the vehicle brake circuit is exhausted. According to the ESC regulatory line, it is detected whether the gas in the vehicle brake circuit is completely discharged, wherein a method for determining whether the gas in the vehicle brake circuit is completely discharged is based on the pressure building rate of the vehicle brake circuit. When the pressure building rate is less than the set value, it is determined that the gas in the vehicle brake circuit is not completely discharged, and at this time, the vehicle brake circuit is secondary exhausted by inputting brake fluid. It should be noted that when the ESC regulatory line detects whether there is gas in the vehicle's braking circuit, it will automatically open the valve between the driving circuit and the pressure increase and relief circuit to test the entire braking circuit. The ESC regulatory line is mainly used to perform corresponding tests on the driving brakes and ABS functions of newly-launched vehicles, perform corresponding braking operations according to the test specifications required by regulations, and determine whether the braking force of the front and rear axles of the vehicle can meet the braking force required by regulations. The regulatory detection line can be considered as a regulatory detection station.

[0062] In one embodiment, the device injects brake fluid into the entire brake circuit from the brake fluid filling port in the form of positive pressure, and opens the bleed screw position of one of the calipers to discharge the brake fluid outward. In this way, positive pressure is added from the top and discharged from the bottom, and the brake fluid in the brake system is squeezed out, and the gas comes out with it.

[0063] When the equipment positively pressure fills the entire brake system with 1.5 times the volume of brake fluid, at the same time, only continuous brake fluid flows out from the bleed screw position in the caliper, without intermittent bubbles mixed in it, proving that there is no gas in this caliper and the circuit.

[0064] It can be understood that the present invention discloses a method, device, equipment and storage medium for handling soft vehicle brakes. The method includes the following steps: when all brake line connection points, ESC valve bodies, vacuum equipment, brake fluid adding equipment and brake fluid adding process parameters in the vehicle's brake circuit are normal and the master cylinder is difficult to build pressure, it is determined that there is gas in the vehicle's brake circuit, the filling equipment communicates with the vehicle's ESC module, and the normally closed pressure increase and relief circuit solenoid valve is opened to make the normally closed pressure increase and relief circuit a normally open circuit and the driving brake circuit of the ESC module. At this time, the two parts of the ESC module circuit are simultaneously connected to the rest of the vehicle's brake system. Detect again whether there is gas in the vehicle's entire brake circuit at this time, that is, whether there is gas in the ESC pressure increase and relief circuit; discharge the gas in the above-mentioned inspection circuit, and re-fill the above-mentioned inspection circuit with positive pressure brake fluid to allow the brake fluid to fill the entire circuit.

[0065] The present invention determines the cause of gas generation again through the locked gas storage position, and exhausts the brake circuit of the vehicle where the gas has been detected. The cause of gas generation can be used to clarify the cause of the soft brake pedal caused by the presence of gas in the brake system circuit. This avoids the problem of soft batch brakes caused by such problems. It ensures the driving safety of users, improves the driving experience of users, and eliminates road safety hazards.

[0066] Reference Figure 2 , Figure 2 FIG. 1 is a schematic diagram of a vehicle brake soft processing device provided by the present invention, such as Figure 2 As shown, the device comprises:

[0067] Determination module 201: It is used to determine that gas exists in the ESC circuit when all brake pipe connection points in the vehicle's brake circuit, the pressure building rate of the master cylinder pressure, the ESC valve body, the vacuum pumping equipment, the brake fluid adding equipment and the process parameters of the brake fluid adding are normal and there is gas in the vehicle's brake circuit.

[0068] The inspection module 202 is used to inspect whether there is gas in the normally open service brake circuit in the ESC circuit, and after inspecting the service brake circuit, inspect whether there is gas in the normally closed pressure-increasing and pressure-relieving brake circuit in the ESC circuit.

[0069] Processing module 203: used to discharge gas in the service brake circuit and / or the pressure-increasing and reducing brake circuit.

[0070] Furthermore, in a possible implementation, the determination module 201 is also used to determine the presence of gas in the service brake circuit and / or the pressure-boosting and pressure-releasing brake circuit by inputting a preset volume of brake fluid into the service brake circuit and / or the pressure-boosting and pressure-releasing brake circuit when intermittent brake fluid is discharged or bubbles are present.

[0071] Furthermore, in a possible implementation manner, the determination module 201 is also used to determine that there is gas in the braking circuit of the whole vehicle when a pressure build-up rate in the braking circuit of the whole vehicle is lower than a set value.

[0072] Furthermore, in a possible implementation manner, the determination module 201 is also used to determine that there is gas in the brake circuit of the entire vehicle when all brake pipe connection points in the brake circuit are normal and the brake pedal is soft.

[0073] Furthermore, in a possible implementation, the processing module 203 is also used to discharge the gas in the service brake circuit and the pressure-increasing and releasing brake circuit into the whole vehicle brake circuit by inputting brake fluid, and to exhaust the whole vehicle brake circuit.

[0074] Furthermore, in a possible implementation, the processing module 203 is also used to detect whether the gas in the vehicle's braking circuit is completely discharged according to the ESC regulatory line. When it is determined that the gas in the vehicle's braking circuit is not completely discharged, the vehicle's braking circuit is secondary exhausted by inputting brake fluid.

[0075] Reference Figure 3 , Figure 3 The schematic diagram of the ESC circuit structure provided by the present invention is shown in FIG. Figure 3 As shown:

[0076] The working principle of the ESC circuit is as follows Figure 3 As shown, the figure includes 4 AVs (liquid outlet valves normally closed), 4 EVs (liquid inlet valves normally open), 2 USVs (pilot valves normally open), 2 HSVs (high-pressure valves normally closed), and 2 low-pressure accumulators, forming 2 brake circuits. The black line represents the service brake circuit, which is a conventional brake circuit and a normally open circuit; the dotted line represents the ESC boost and pressure relief circuit, which is a normally closed circuit. When the vehicle is vacuumed and filled online, each valve body opens and closes in sequence according to a fixed timing diagram to ensure that the vacuum equipment completely removes all gases in the ESC circuits, caliper bodies, and A1 and A2 low-pressure accumulators inside the ESC, and ensures that the brake fluid is filled when the vehicle brake circuit is vacuumed.

[0077] Because of the special structure inside the ESC, the ESC is divided into the service brake circuit (solid black line) and the pressure increase and relief circuit (dashed black line) that can only be opened when the ESC is in effect. The dashed line (pressure increase and relief circuit) and A2 are normally closed by the solenoid valve. When the ESC regulation line is crossed to check whether the ESC function meets the regulatory requirements, the solenoid valve of the dashed line circuit (pressure increase and relief circuit) of the vehicle communication will be opened, so that the dashed line circuit is connected with other circuits, and the gas inside will inevitably be released.

[0078] It should be noted that the reason for dividing the ESC into two circuits to check where the gas exists is because if they are not separated, even if the repaired equipment discharges the gas through the caliper bleed screw, it is not known whether the gas is inside the caliper or in the normally closed pressure-increasing and pressure-relieving circuit of the ESC. Only by using a single variable, first isolating the normally closed pressure-increasing and pressure-relieving circuit, and then discharging the gas once. If the gas is not discharged, open the normally closed pressure-increasing and pressure-relieving circuit, and discharge it together with the brake pipe and caliper again. Since the gas was not discharged just now, it will be discharged this time, and the only change this time is the gas in the opened normally closed pressure-increasing and pressure-relieving circuit.

[0079] During normal service braking and vacuum pumping without communication to add brake fluid, the pressure-increasing and relief circuit shown by the black dotted line and the low-pressure accumulator A2 are sealed by the normally closed high-pressure valve HSV2 and the normally closed liquid outlet valves RFAV and LRAV. The air inside cannot be pumped out by the vacuum equipment, and the brake fluid cannot enter the dotted line circuit and the low-pressure accumulator A2.

[0080] However, when the ESC communication is filled or the ESC function test is carried out through the regulatory line, the normally closed high-pressure valve HSV2 and the normally closed liquid outlet valves RFAV and LRAV will be opened, and the air inside will be released into the entire brake circuit of the vehicle, not only the two circuits inside the ESC, but may also be released into the brake caliper, brake hose, brake pipe, etc.

[0081] The internal circuit of ESC is divided into two parts, namely the normally open circuit and the normally closed pressure increase and release circuit. First check the normally open circuit of ESC and the brake pipeline (including brake hose and brake hard pipe) and brake caliper connected with it to determine whether gas exists in the above parts. If there is no gas in the above parts, then we communicate with ESC to open the normally closed solenoid valve, connect the normally closed dotted circuit and low-pressure accumulator A2 with the brake pipeline (including brake hose and brake hard pipe) and brake caliper of the whole vehicle. If gas is discharged through this part of the equipment, then this gas must exist in the dotted circuit and low-pressure accumulator A2 inside the ESC.

[0082] Since the brake circuit is arranged in an X shape, one for the right front and left rear, and one for the right rear and left front, you can also Figure 3 It can be seen that the schematic diagram is symmetrical from the middle. So here we will only talk about the left part, right front and left back. The principle of the symmetrical part on the right is the same.

[0083] In one embodiment, the device exhausts the air by opening only one of the four calipers, injecting brake fluid into the entire brake system from the brake fluid filling port in the form of positive pressure, and discharging the brake fluid outward through the bleed screw position of one of the opened calipers. In this way, positive pressure is added from the top and discharged from the bottom, and the brake fluid in the brake system is squeezed out.

[0084] When the equipment positively pressure fills the entire brake system with 1.5 times the volume of brake fluid, and at the same time, only continuous brake fluid flows out of the caliper's bleed screw position, without intermittent bubbles mixed in it, it proves that there is no gas in this caliper and the circuit, and then bleed the other three calipers in turn. By the same token, open the bleed screw to let the brake fluid and the gas inside drain out. When the brake fluid of all four calipers has been drained, the gas is bound to be completely discharged.

[0085] Refer to the following Figure 4 An electronic device 400 according to this embodiment of the present invention will be described. Figure 4 The electronic device 400 shown is only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present invention.

[0086] like Figure 4 As shown, the electronic device 400 is in the form of a general computing device. The components of the electronic device 400 may include but are not limited to: at least one processing unit 410, at least one storage unit 420, and a bus 430 connecting different system components (including the storage unit 420 and the processing unit 410).

[0087] The storage unit stores program codes, which can be executed by the processing unit 410, so that the processing unit 410 executes the steps according to various exemplary embodiments of the present invention described in the above “Embodiment Method” section of this specification.

[0088] The storage unit 420 may include a readable medium in the form of a volatile storage unit, such as a random access memory unit (RAM) 421 and / or a cache memory unit 422 , and may further include a read-only memory unit (ROM) 423 .

[0089] The storage unit 420 may also include a program / utility 424 having a set (at least one) of program modules 425, such program modules 425 including but not limited to: an operating system, one or more application programs, other program modules, and program data, each of which or some combination may include an implementation of a network environment.

[0090] Bus 430 may represent one or more of several types of bus structures, including a memory unit bus or memory unit controller, a peripheral bus, an accelerated graphics port, a processing unit, or a local bus using any of a variety of bus architectures.

[0091] The electronic device 400 may also communicate with one or more external devices (e.g., keyboards, pointing devices, Bluetooth devices, etc.), may also communicate with one or more devices that enable a user to interact with the electronic device 400, and / or communicate with any device that enables the electronic device 400 to communicate with one or more other computing devices (e.g., routers, modems, etc.). Such communication may be performed via an input / output (I / O) interface 450. Furthermore, the electronic device 400 may also communicate with one or more networks (e.g., local area networks (LANs), wide area networks (WANs), and / or public networks, such as the Internet) via a network adapter 460. As shown, the network adapter 460 communicates with other modules of the electronic device 400 via a bus 430. It should be understood that, although not shown in the figure, other hardware and / or software modules may be used in conjunction with the electronic device 400, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems, etc.

[0092] Through the description of the above implementation, it is easy for those skilled in the art to understand that the example implementation described here can be implemented by software, or by software combined with necessary hardware. Therefore, the technical solution according to the implementation of the present disclosure can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, a USB flash drive, a mobile hard disk, etc.) or on a network, including several instructions to enable a computing device (which can be a personal computer, a server, a terminal device, or a network device, etc.) to execute the method according to the implementation of the present disclosure.

[0093] According to the solution of the present disclosure, a computer-readable storage medium is also provided, on which a program product capable of implementing the above method of the present specification is stored. In some possible implementations, various aspects of the present invention can also be implemented in the form of a program product, which includes a program code, and when the program product is run on a terminal device, the program code is used to enable the terminal device to execute the steps according to various exemplary implementations of the present invention described in the above "Exemplary Method" section of the present specification.

[0094] refer to Figure 5 As shown, a program product 500 for implementing the above method according to an embodiment of the present invention is described, which can adopt a portable compact disk read-only memory (CD-ROM) and include program code, and can be run on a terminal device, such as a personal computer. However, the program product of the present invention is not limited thereto. In this document, a readable storage medium can be any tangible medium containing or storing a program, which can be used by or in combination with an instruction execution system, an apparatus or a device.

[0095] The program product may use any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. The readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination of the above. More specific examples (non-exhaustive list) of readable storage media include: an electrical connection with one or more wires, a portable disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above.

[0096] Computer readable signal media may include data signals propagated in baseband or as part of a carrier wave, in which readable program code is carried. Such propagated data signals may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. Readable signal media may also be any readable medium other than a readable storage medium, which may send, propagate, or transmit a program for use by or in conjunction with an instruction execution system, apparatus, or device.

[0097] The program code embodied on the readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wired, optical cable, RF, etc., or any suitable combination of the foregoing.

[0098] Program code for performing the operations of the present invention may be written in any combination of one or more programming languages, including object-oriented programming languages ​​such as Java, C++, etc., and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the user computing device, partially on the user device, as a separate software package, partially on the user computing device and partially on a remote computing device, or entirely on a remote computing device or server. In cases involving a remote computing device, the remote computing device may be connected to the user computing device through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computing device (e.g., through the Internet using an Internet service provider).

[0099] In addition, the above-mentioned figures are only schematic illustrations of the processes included in the method according to an exemplary embodiment of the present invention, and are not intended to be limiting. It is easy to understand that the processes shown in the above-mentioned figures do not indicate or limit the time sequence of these processes. In addition, it is also easy to understand that these processes can be performed synchronously or asynchronously, for example, in multiple modules.

[0100] In summary, the present application provides a method, device, equipment and storage medium for processing soft vehicle brakes, the method comprising the following steps: when all brake line connection points in the vehicle's brake circuit, the pressure building rate of the master cylinder pressure, the ESC valve body, the vacuum equipment, the brake fluid adding equipment and the process parameters for adding brake fluid are normal and there is gas in the vehicle's brake circuit, determining that gas exists in the ESC circuit; checking whether there is gas in the normally open service brake circuit in the ESC circuit, and after detecting the service brake circuit, checking whether there is gas in the normally closed pressure-increasing and pressure-reducing brake circuit in the ESC circuit; discharging the gas in the service brake circuit and / or the pressure-increasing and pressure-reducing brake circuit, being able to lock the gas storage position and determine the cause of gas generation, and at the same time venting the brake circuit in which gas has been detected, thereby ensuring the user's driving safety, improving the user's driving experience, and eliminating road safety hazards.

[0101] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

[0102] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems) and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the process in the flowchart. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

Claims

1. A method for treating a vehicle with soft braking, characterized in that: include: When all brake pipe connection points in the vehicle's brake circuit, the master cylinder pressure build-up rate, the ESC valve body, the vacuum pumping equipment, the brake fluid adding equipment, and the brake fluid adding process parameters are normal and there is gas in the vehicle's brake circuit, it is determined that gas exists in the ESC circuit; Checking whether there is gas in a normally open service brake circuit in the ESC circuit, and after checking the service brake circuit, checking whether there is gas in a normally closed pressure-increasing and pressure-relieving brake circuit in the ESC circuit; Discharge the gas in the service brake circuit and / or the pressure-increasing and reducing brake circuit; Among them, the gas in the service brake circuit and the pressure increase and relief brake circuit is discharged into the whole vehicle brake circuit by inputting brake fluid, and the whole vehicle brake circuit is exhausted; According to the ESC regulation line, check whether the gas in the vehicle's brake circuit is completely discharged. When it is determined that the gas in the vehicle's brake circuit is not completely discharged, the vehicle's brake circuit is secondary exhausted by inputting brake fluid.

2. The method according to claim 1, characterized in that The checking whether there is gas in the normally open service brake circuit in the ESC circuit, and after checking the service brake circuit, checking whether there is gas in the normally closed pressure increase and reduction brake circuit in the ESC circuit, comprises: By inputting a preset volume of brake fluid into the service brake circuit and / or the pressure-increasing and reducing brake circuit, when the brake fluid is discharged intermittently or bubbles are present, it is determined that gas exists in the service brake circuit and / or the pressure-increasing and reducing brake circuit.

3. The method according to claim 1, characterized in that: When the pressure building rate in the vehicle braking circuit is lower than a set value, it is determined that gas exists in the vehicle braking circuit.

4. The method according to claim 1, characterized in that: Also includes: When all brake pipe connection points in the brake circuit are normal and the brake pedal is soft, it is determined that there is gas in the brake circuit of the entire vehicle.

5. The method according to claim 1, characterized in that: The components in the vehicle's brake circuit include: brake lines, master cylinder, ESC valve body, vacuum equipment, brake fluid adding equipment, and brake fluid adding parameter verification equipment.

6. A device for processing soft braking of a vehicle, characterized in that: include: A determination module, which is used to determine that gas exists in the ESC circuit when all brake pipe connection points in the vehicle brake circuit, the pressure building rate of the master cylinder pressure, the ESC valve body, the vacuum pumping equipment, the brake fluid adding equipment and the brake fluid adding process parameters are normal and there is gas in the vehicle brake circuit; a testing module, which is used to test whether there is gas in a normally open service brake circuit in the ESC circuit, and after testing the service brake circuit, test whether there is gas in a normally closed pressure increase / relief brake circuit in the ESC circuit; A processing module, which is used to discharge gas in a service brake circuit and / or a pressure-increasing and reducing brake circuit; By inputting brake fluid, the gas in the service brake circuit and the pressure-increasing and reducing brake circuit is discharged into the whole vehicle brake circuit, and the whole vehicle brake circuit is exhausted; According to the ESC regulation line, check whether the gas in the vehicle's brake circuit is completely discharged. When it is determined that the gas in the vehicle's brake circuit is not completely discharged, the vehicle's brake circuit is secondary exhausted by inputting brake fluid.

7. An electronic device, characterized in that: The electronic device comprises: processor; A memory having computer-readable instructions stored thereon, wherein when the computer-readable instructions are executed by the processor, the method according to any one of claims 1 to 5 is implemented.

8. A computer-readable storage medium, characterized in that: The computer program instructions are stored therein, and when the computer program instructions are executed by a computer, the computer is caused to execute the method according to any one of claims 1 to 5.

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