Brake method and device based on electromagnetic valve in engine, electronic equipment and storage medium

Abstract

The invention provides a braking method and device based on an electromagnetic valve in an engine, electronic equipment and a storage medium, and relates to the technical field of vehicle braking. The engine comprises a third-gear electromagnetic valve, a fifth-gear electromagnetic valve, a second-gear electromagnetic valve corresponding to the same cylinder with the third-gear electromagnetic valve, and a sixth-gear electromagnetic valve corresponding to the same cylinder with the fifth-gear electromagnetic valve. The method comprises the steps that in response to an obtained braking signal, a third-gear electromagnetic valve and a fifth-gear electromagnetic valve are adopted for first auxiliary braking of an engine; and if the current braking power is smaller than the preset threshold value, the second-gear electromagnetic valve and the sixth-gear electromagnetic valve are adopted for second auxiliary braking of the engine. The brake failure risk is reduced, and the brake safety is improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of vehicle braking, and in particular to a braking method, device, electronic equipment and storage medium based on a solenoid valve in an engine. Background Art

[0002] The in-cylinder brake of a car is a form of engine-assisted braking, which allows the engine to generate a large negative torque through compression release. The brake system is equipped with a brake solenoid valve. The brake solenoid valve is used to receive the ECU brake signal to control the brake rocker arm to open.

[0003] Under braking conditions, failure of the solenoid valve will result in a reduction in braking power. Therefore, how to increase the stability of auxiliary braking is a technical problem that needs to be solved urgently in this field. Summary of the invention

[0004] In view of this, the purpose of the present disclosure is to propose a braking method, device, electronic device and storage medium based on a solenoid valve in an engine, and the present disclosure can solve the existing problems in a targeted manner.

[0005] 2. Based on the above purpose, in the first aspect, the present disclosure proposes a braking method based on solenoid valves in an engine, wherein the engine includes a 3-speed solenoid valve, a 5-speed solenoid valve, and also includes a 2-speed solenoid valve corresponding to the same cylinder as the 3-speed solenoid valve, and a 6-speed solenoid valve corresponding to the same cylinder as the 5-speed solenoid valve; the method includes: in response to obtaining a braking signal, using the 3-speed solenoid valve and the 5-speed solenoid valve to perform a first auxiliary braking of the engine; if the current braking power is less than a preset threshold, switching to using the 2-speed solenoid valve and the 6-speed solenoid valve to perform a second auxiliary braking of the engine.

[0006] In the second aspect, a braking device based on solenoid valves in an engine is also provided, wherein the engine includes a 3-speed solenoid valve, a 5-speed solenoid valve, and also includes a 2-speed solenoid valve corresponding to the same cylinder as the 3-speed solenoid valve, and a 6-speed solenoid valve corresponding to the same cylinder as the 5-speed solenoid valve; the device includes: a first braking unit, configured to respond to a braking signal and use the 3-speed solenoid valve and the 5-speed solenoid valve to perform a first auxiliary braking of the engine; a second braking unit, configured to switch to using the 2-speed solenoid valve and the 6-speed solenoid valve to perform a second auxiliary braking of the engine if the current braking power is less than a preset threshold.

[0007] According to a third aspect, an electronic device is provided, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the method described in the first aspect.

[0008] According to a fourth aspect, a computer-readable storage medium is provided, on which a computer program is stored, and the computer program is executed by a processor to implement any method described in the first aspect.

[0009] In a fifth aspect, a computer program product is also provided, including a computer program, wherein the computer program is executed by a processor to implement any method described in the first aspect.

[0010] In general, the present disclosure has at least the following beneficial effects: by adding a spare solenoid valve and strategy, the effect of solenoid valve switching is achieved, the problem of reduced braking power caused by failure of the original solenoid valve is effectively reduced, and the risk of brake failure is reduced. The braking function can be realized to the greatest extent when the original solenoid valve fails, thereby improving braking safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the multiple drawings represent the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings only depict some embodiments disclosed in accordance with the present disclosure and should not be regarded as limiting the scope of the present disclosure.

[0012] Figure 1 A flow chart of a braking method based on a solenoid valve in an engine according to an embodiment of the present disclosure is shown;

[0013] Figure 2 A schematic diagram of a control circuit based on a solenoid valve in an engine according to an embodiment of the present disclosure is shown;

[0014] Figure 3 A schematic diagram of a braking device based on a solenoid valve in an engine according to an embodiment of the present disclosure is shown;

[0015] Figure 4 A schematic diagram of the structure of an electronic device provided by an embodiment of the present disclosure is shown;

[0016] Figure 5 A schematic diagram of a storage medium provided by an embodiment of the present disclosure is shown. DETAILED DESCRIPTION

[0017] The present disclosure is further described in detail below in conjunction with the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are only used to explain the relevant invention, rather than to limit the invention. It is also necessary to explain that, for ease of description, only the parts related to the relevant invention are shown in the accompanying drawings.

[0018] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other. The present disclosure will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0019] Figure 1 The present invention shows a braking method based on a solenoid valve in an engine. The engine includes a 3-speed solenoid valve, a 5-speed solenoid valve, a 2-speed solenoid valve corresponding to the same cylinder as the 3-speed solenoid valve, and a 6-speed solenoid valve corresponding to the same cylinder as the 5-speed solenoid valve. In an embodiment of the present invention, the method includes:

[0020] Step S101, in response to obtaining a brake signal, using the 3rd gear solenoid valve and the 5th gear solenoid valve to perform a first auxiliary brake on the engine.

[0021] Step S102: If the current braking power is less than a preset threshold, switch to using the 2nd gear solenoid valve and the 6th gear solenoid valve to perform a second auxiliary braking of the engine.

[0022] In this embodiment, if the current braking power is less than a preset threshold, the executor of the braking method based on the solenoid valve in the engine (such as a vehicle) can switch from using the 3rd gear solenoid valve and the 5th gear solenoid valve to assist in braking the engine to using the 2nd gear solenoid valve and the 6th gear solenoid valve to assist in braking the engine.

[0023] Two solenoid valves are added to the rocker arm shaft seats of the engine 2nd and 6th gears, and the original solenoid valves at 3rd and 5th gears remain unchanged. Usually, an n-cylinder in-line engine has (n+1) gears.

[0024] For example, if the vehicle engine is a 6-cylinder engine, if the 3rd gear solenoid valve corresponding to the 3rd gear is used to brake the 1st, 2nd and 3rd cylinders of the engine, then the 2nd gear solenoid valve corresponding to the 2nd gear is also used to brake the 1st, 2nd and 3rd cylinders. If the 5th gear solenoid valve corresponding to the 5th gear is used to brake the 4th, 5th and 6th cylinders, then the 6th gear solenoid valve corresponding to the 6th gear is used to brake the 4th, 5th and 6th cylinders.

[0025] This application achieves the effect of solenoid valve switching by adding a spare solenoid valve and strategy, effectively reducing the problem of reduced braking power caused by failure of the original solenoid valve and reducing the risk of brake failure. The braking function can be realized to the greatest extent when the original solenoid valve fails, thereby improving braking safety.

[0026] In some optional implementations of any embodiment of the present disclosure, after the switch to using the 2nd-speed solenoid valve and the 6th-speed solenoid valve to perform the second auxiliary braking of the engine, the method also includes: respectively determining the ratio of the actual braking power to the standard braking power corresponding to the current speed during the first auxiliary braking and the second auxiliary braking, and obtaining a first ratio corresponding to the first auxiliary braking and a second ratio corresponding to the second auxiliary braking; if the second ratio is smaller than the first ratio, switching to using the first auxiliary braking.

[0027] Optionally, if the second ratio is smaller than the first ratio, switching to the first auxiliary braking comprises: when the working state of the engine is in any state, if the second ratio is smaller than the first ratio, switching to the first auxiliary braking.

[0028] In some optional implementations of any embodiment of the present disclosure, if the current braking power is less than a preset threshold, switching to using the 2nd gear solenoid valve and the 6th gear solenoid valve for the second auxiliary braking of the engine includes: when the working state of the engine is normal, if the current braking power is less than the preset threshold, switching to using the 2nd gear solenoid valve and the 6th gear solenoid valve for the second auxiliary braking of the engine; the engine sends a fault information to update the working state of the engine to a fault state.

[0029] In these implementations, the second auxiliary brake can be switched to only when the working state of the engine is in a normal state, and cannot be switched to in a fault state, that is, after switching to the second auxiliary brake, once the first auxiliary brake is switched back, the second auxiliary brake cannot be switched to again. The second auxiliary brake can only be switched to only when the working state of the engine is modified to a normal state.

[0030] In some optional implementations of any embodiment of the present disclosure, the preset threshold is the product of the standard braking power during the first auxiliary braking and a preset coefficient, and the preset coefficient is the difference between 1 and the empirical value percentage of the braking power reduction when the solenoid valve fails.

[0031] In some optional implementations of any embodiment of the present disclosure, the control circuit of the 3rd gear solenoid valve and the 5th gear solenoid valve is a first control circuit, and the control circuit of the 2nd gear solenoid valve and the 6th gear solenoid valve is a second control circuit; the use of the 3rd gear solenoid valve and the 5th gear solenoid valve for the first auxiliary braking of the engine includes: opening the 3rd gear solenoid valve and the 5th gear solenoid valve in the first control circuit; the use of the 2nd gear solenoid valve and the 6th gear solenoid valve for the second auxiliary braking of the engine includes: opening the 2nd gear solenoid valve and the 6th gear solenoid valve in the second control circuit.

[0032] In some optional implementations of any embodiment of the present disclosure, the 2nd gear solenoid valve and the 3rd gear solenoid valve correspond to the same rocker arm shaft; the 6th gear solenoid valve and the 5th gear solenoid valve correspond to the same rocker arm shaft.

[0033] The 2nd-gear solenoid valve and the 3rd-gear solenoid valve are arranged on the same rocker arm shaft, and the 6th-gear solenoid valve and the 5th-gear solenoid valve are arranged on the same rocker arm shaft.

[0034] The present disclosure also provides a braking method based on a solenoid valve in an engine according to an embodiment of the present disclosure. The braking method based on the solenoid valve in the engine includes:

[0035] When calibrating the engine braking, a set of braking power data based on the engine speed is obtained and set as a.

[0036] Two solenoid valves are newly added at the rocker arm shaft seats of the 2nd and 6th gears of the engine, and the solenoid valves at the original 3rd and 5th gears remain unchanged. The control lines of the 3rd and 5th gears are set as line 0 (corresponding to the first control line), and the control lines of the 2nd and 6th gears are set as line 1 (corresponding to the second control line).

[0037] After the braking is turned on, the ECU defaults to turn on line 0, that is, the solenoid valves at the 3rd and 5th gears are turned on. The ECU adds a self-checking strategy. If the calibrated braking power corresponding to the current speed is a1 and the actual braking power is less than a1×(1 - x%), where x is the percentage of the braking power reduction experience value when the solenoid valve fails. Let the actual power at this time be b1, record b1 / a1, and then switch to line 1, that is, the solenoid valves at the 3rd and 5th gears are turned off, and the solenoid valves at the 2nd and 6th gears are turned on. The calibrated braking power corresponding to the current speed is a2, and the actual braking power is b2. Record b2 / a2. If b2 / a2 < b1 / a1, then switch back to line 0. To prevent switching back from line 0 to line 1, the corresponding strategy is: after initially switching from line 0 to line 1, the engine has a fault, and this fault state is eliminated after subsequent maintenance. And the switch from line 0 to line 1 must be in the normal state of the engine, and the switch from line 1 to line 0 does not limit the working state of the engine.

[0038] Figure 2 The schematic diagram of the control line based on the solenoid valve in the engine according to the embodiment of the present disclosure is shown.

[0039] The embodiment of the present disclosure provides a braking device based on a solenoid valve in an engine. The device is used to execute the braking method based on the solenoid valve in the engine described in the above embodiment, as Figure 3 shown. The engine includes a 3rd gear solenoid valve and a 5th gear solenoid valve, and also includes a 2nd gear solenoid valve corresponding to the same cylinder as the 3rd gear solenoid valve, and a 6th gear solenoid valve corresponding to the same cylinder as the 5th gear solenoid valve. The device includes: a first braking unit 301 configured to, in response to obtaining a braking signal, perform the first auxiliary braking of the engine by using the 3rd gear solenoid valve and the 5th gear solenoid valve; a second braking unit 302 configured to, if the current braking power is less than a preset threshold, switch to perform the second auxiliary braking of the engine by using the 2nd gear solenoid valve and the 6th gear solenoid valve.

[0040] The braking device based on the solenoid valve in the engine provided by the above-mentioned embodiment of the present disclosure and the braking method based on the solenoid valve in the engine provided by the embodiment of the present disclosure are based on the same inventive concept and have the same beneficial effects as the methods adopted, run or implemented by the application programs stored therein.

[0041] The embodiment of the present disclosure also provides an electronic device corresponding to the braking method based on the electromagnetic valve in the engine provided in the above embodiment, so as to execute the braking method based on the electromagnetic valve in the engine. The embodiment of the present disclosure is not limited.

[0042] Please refer to Figure 4 , which shows a schematic diagram of an electronic device provided by some embodiments of the present disclosure. Figure 4 As shown, the electronic device 40 includes: a processor 400, a memory 401, a bus 402 and a communication interface 403, and the processor 400, the communication interface 403 and the memory 401 are connected via the bus 402; the memory 401 stores a computer program that can be run on the processor 400, and the processor 400 executes the method provided in any of the aforementioned embodiments of the present disclosure when running the computer program.

[0043] The memory 401 may include a high-speed random access memory (RAM), and may also include a non-volatile memory, such as at least one disk memory. The communication connection between the system network element and at least one other network element is realized through at least one communication interface 403 (which may be wired or wireless), and the Internet, wide area network, local area network, metropolitan area network, etc. may be used.

[0044] The bus 402 may be an ISA bus, a PCI bus, or an EISA bus, etc. The bus may be divided into an address bus, a data bus, a control bus, etc. The memory 401 is used to store a program, and the processor 400 executes the program after receiving an execution instruction. The braking method based on the solenoid valve in the engine disclosed in any implementation of the aforementioned embodiment of the present disclosure may be applied to the processor 400, or implemented by the processor 400.

[0045] The processor 400 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by the hardware integrated logic circuit in the processor 400 or the instruction in the form of software. The above processor 400 can be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it can also be a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The disclosed methods, steps and logic block diagrams in the embodiments of the present disclosure can be implemented or executed. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor, etc. The steps of the method disclosed in conjunction with the embodiments of the present disclosure can be directly embodied as a hardware decoding processor to be executed, or a combination of hardware and software modules in the decoding processor can be executed. The software module can be located in a mature storage medium in the field such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, etc. The storage medium is located in the memory 401, and the processor 400 reads the information in the memory 401 and completes the steps of the above method in combination with its hardware.

[0046] The electronic device provided by the embodiment of the present disclosure and the braking method based on the solenoid valve in the engine provided by the embodiment of the present disclosure are based on the same inventive concept and have the same beneficial effects as the methods adopted, operated or implemented by them.

[0047] The present disclosure also provides a computer-readable storage medium corresponding to the braking method based on the solenoid valve in the engine provided in the above-mentioned embodiment. Figure 5 The computer-readable storage medium shown is a CD 50 on which a computer program (ie, a program product) is stored. When the computer program is run by a processor, the braking method based on the solenoid valve in the engine provided by any of the aforementioned embodiments will be executed.

[0048] It should be noted that examples of the computer-readable storage medium may also include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other optical or magnetic storage media, which are not listed here one by one.

[0049] The computer-readable storage medium provided by the above-mentioned embodiment of the present disclosure and the braking method based on the solenoid valve in the engine provided by the embodiment of the present disclosure are based on the same inventive concept, and have the same beneficial effects as the method adopted, run or implemented by the application program stored therein.

[0050] It should be noted that:

[0051] In the above text, the term "comprises", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be noted that the scope of the method and device in the embodiments of the present disclosure is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0052] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present disclosure, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, a magnetic disk, or an optical disk), and includes a number of instructions for enabling a terminal (which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to execute the methods described in each embodiment of the present disclosure.

[0053] The embodiments of the present disclosure are described above in conjunction with the accompanying drawings, which are only specific implementation modes of the present disclosure. However, the present disclosure is not limited to the above-mentioned specific implementation modes. The above-mentioned specific implementation modes are merely illustrative and not restrictive. Under the guidance of the present disclosure, ordinary technicians in this field can also make many forms without departing from the purpose of the present disclosure and the scope of protection of the claims, all of which are within the protection of the present disclosure.

Claims

1. A braking method based on a solenoid valve in an engine, characterized in that: The engine includes a 3-speed solenoid valve, a 5-speed solenoid valve, a 2-speed solenoid valve corresponding to the same cylinder as the 3-speed solenoid valve, and a 6-speed solenoid valve corresponding to the same cylinder as the 5-speed solenoid valve; The method comprises: In response to obtaining a brake signal, using the 3rd gear solenoid valve and the 5th gear solenoid valve to perform a first auxiliary brake of the engine; If the current braking power is less than a preset threshold, the second gear solenoid valve and the sixth gear solenoid valve are switched to perform the second auxiliary braking of the engine.

2. The method according to claim 1, characterized in that After the switching to using the 2nd gear solenoid valve and the 6th gear solenoid valve to perform the second auxiliary braking of the engine, the method further includes: Determine the ratio of the actual braking power to the standard braking power corresponding to the current speed during the first auxiliary braking and the second auxiliary braking respectively, and obtain a first ratio corresponding to the first auxiliary braking and a second ratio corresponding to the second auxiliary braking; If the second ratio is smaller than the first ratio, the first auxiliary braking is switched to be used.

3. The method according to claim 1, characterized in that If the current braking power is less than a preset threshold, switching to using the 2nd gear solenoid valve and the 6th gear solenoid valve to perform the second auxiliary braking of the engine includes: When the working state of the engine is normal, if the current braking power is less than a preset threshold, switching to use the 2nd gear solenoid valve and the 6th gear solenoid valve to perform the second auxiliary braking of the engine; The engine sends fault information so that the working state of the engine is updated to a fault state.

4. The method according to claim 2, characterized in that: If the second ratio is less than the first ratio, switching to the first auxiliary braking comprises: When the working state of the engine is any state, if the second ratio is smaller than the first ratio, the first auxiliary braking is switched to be used.

5. The method according to claim 1, characterized in that The preset threshold is the product of the standard braking power during the first auxiliary braking and a preset coefficient, and the preset coefficient is the difference between 1 and the empirical value percentage of the braking power reduction when the solenoid valve fails.

6. The method according to claim 1, characterized in that The control circuits of the 3rd gear solenoid valve and the 5th gear solenoid valve are the first control circuits, and the control circuits of the 2nd gear solenoid valve and the 6th gear solenoid valve are the second control circuits; The first auxiliary braking of the engine using the 3rd gear solenoid valve and the 5th gear solenoid valve comprises: opening the 3rd gear solenoid valve and the 5th gear solenoid valve in the first control circuit; The second auxiliary braking of the engine using the 2nd gear solenoid valve and the 6th gear solenoid valve includes: opening the 2nd gear solenoid valve and the 6th gear solenoid valve in the second control circuit.

7. The method according to claim 1, characterized in that The 2nd gear solenoid valve and the 3rd gear solenoid valve correspond to the same rocker arm shaft; The 6th-speed solenoid valve and the 5th-speed solenoid valve correspond to the same rocker arm shaft.

8. A braking device based on a solenoid valve in an engine, characterized in that: The engine includes a 3-speed solenoid valve, a 5-speed solenoid valve, a 2-speed solenoid valve corresponding to the same cylinder as the 3-speed solenoid valve, and a 6-speed solenoid valve corresponding to the same cylinder as the 5-speed solenoid valve; The device comprises: a first brake unit, configured to perform a first auxiliary brake of the engine using the 3rd gear solenoid valve and the 5th gear solenoid valve in response to obtaining a brake signal; The second brake unit is configured to switch to using the 2nd gear solenoid valve and the 6th gear solenoid valve to perform the second auxiliary braking of the engine if the current braking power is less than a preset threshold.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: The processor runs the computer program to implement the method according to any one of claims 1 to 7.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: The program is executed by a processor to implement the method according to any one of claims 1 to 7.

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