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

Abstract

The present disclosure provides a brake method and device based on solenoid valves in an engine, electronic equipment and storage medium, relating to the technical field of vehicle braking. The engine comprises a 3rd solenoid valve, a 5th solenoid valve, a 2nd solenoid valve corresponding to the same cylinder as the 3rd solenoid valve, and a 6th solenoid valve corresponding to the same cylinder as the 5th solenoid valve. The method comprises: in response to obtaining a brake signal, using the 3rd solenoid valve and the 5th solenoid valve to perform first auxiliary braking of the engine; and if the current brake power is less than a preset threshold, switching to using the 2nd solenoid valve and the 6th solenoid valve to perform second auxiliary braking of the engine. The present disclosure reduces the risk of brake failure and improves the safety of braking.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of vehicle braking, and particularly relates to a brake method based on electromagnetic valves in an engine, a brake device, an electronic device and a storage medium. BACKGROUND

[0002] In-cylinder braking of an automobile is a form of engine auxiliary braking, which generates a large negative torque through compression release. A brake electromagnetic valve is installed in the braking system. The brake electromagnetic valve is used to receive an ECU braking signal to control the opening of a brake rocker arm.

[0003] In a braking working condition, failure of the electromagnetic valve can cause the braking power to decrease. Therefore, how to increase the stability of auxiliary braking is a technical problem to be solved in the field. SUMMARY

[0004] Therefore, the present disclosure aims to provide a brake method based on electromagnetic valves in an engine, a brake device, an electronic device and a storage medium, which can solve the existing problems.

[0005] 2. To achieve the above purpose, in a first aspect, the present disclosure provides a brake method based on electromagnetic valves in an engine, wherein the engine comprises a 3rd gear electromagnetic valve and a 5th gear electromagnetic valve, and further comprises a 2nd gear electromagnetic valve corresponding to the same cylinder as the 3rd gear electromagnetic valve, and a 6th gear electromagnetic valve corresponding to the same cylinder as the 5th gear electromagnetic valve; the method comprises: in response to obtaining a braking signal, using the 3rd gear electromagnetic valve and the 5th gear electromagnetic valve to perform first auxiliary braking of the engine; and if the current braking power is less than a preset threshold, switching to using the 2nd gear electromagnetic valve and the 6th gear electromagnetic valve to perform second auxiliary braking of the engine.

[0006] In a second aspect, the present disclosure further provides a brake device based on electromagnetic valves in an engine, wherein the engine comprises a 3rd gear electromagnetic valve and a 5th gear electromagnetic valve, and further comprises a 2nd gear electromagnetic valve corresponding to the same cylinder as the 3rd gear electromagnetic valve, and a 6th gear electromagnetic valve corresponding to the same cylinder as the 5th gear electromagnetic valve; the device comprises: a first braking unit configured to, in response to obtaining a braking signal, use the 3rd gear electromagnetic valve and the 5th gear electromagnetic valve to perform first auxiliary braking of the engine; and a second braking unit configured to, if the current braking power is less than a preset threshold, switch to using the 2nd gear electromagnetic valve and the 6th gear electromagnetic valve to perform second auxiliary braking of the engine.

[0007] In a third aspect, the present disclosure further provides an electronic device, 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 of the first aspect.

[0008] In a fourth aspect, a computer readable storage medium is provided, having stored thereon a computer program, the computer program being executed by a processor to implement the method of any one of the first aspect.

[0009] In a fifth aspect, a computer program product is provided, comprising a computer program, the computer program being executed by a processor to implement the method of any one of the first aspect.

[0010] In general, the present disclosure has at least the following beneficial effects: by adding a standby solenoid valve and a 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 maximized when the original solenoid valve fails, and the braking safety is improved. BRIEF DESCRIPTION OF DRAWINGS

[0011] In the drawings, like reference numerals refer to like elements throughout the various drawings. The drawings are not necessarily to scale, the emphasis instead being placed upon illustrating principles of the present disclosure. It should be understood that the drawings are merely depictions of some embodiments disclosed herein and should not be construed as limiting the scope of the present disclosure.

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

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

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

[0015] Figure 4 A structural schematic diagram of an electronic device is shown according to an embodiment of the present disclosure;

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

[0017] The present disclosure will be further described below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are merely intended to explain the related application, and not to limit the application. In addition, it should be noted that only parts related to the application are shown in the drawings for ease of description.

[0018] It should be noted that the embodiments in the present disclosure and the features in the embodiments can be combined with each other without conflict. The present disclosure will be described in detail below with reference to the drawings and embodiments.

[0019] Figure 1 A brake method based on solenoids in an engine is shown. The engine includes a 3rd solenoid, a 5th solenoid, a 2nd solenoid corresponding to the same cylinder as the 3rd solenoid, and a 6th solenoid corresponding to the same cylinder as the 5th solenoid. In an embodiment of the disclosure, the method includes:

[0020] In response to obtaining a brake signal, the method includes: using the 3rd solenoid and the 5th solenoid to perform first auxiliary braking of the engine.

[0021] If the current brake power is less than a preset threshold, the method includes: switching to using the 2nd solenoid and the 6th solenoid to perform second auxiliary braking of the engine.

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

[0023] Two solenoids are added to the 2nd and 6th rocker shaft seats of the engine, and the original 3rd and 5th solenoids remain unchanged. Generally, a(n+1)th solenoid is provided for an n-cylinder in-line engine.

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

[0025] The application achieves the effect of solenoid switching by adding a standby solenoid and a strategy, effectively reduces the problem of reduced brake power caused by failure of the original solenoid, and reduces the risk of brake failure. The brake function can be maximized when the original solenoid fails, and the brake safety is improved.

[0026] In some optional implementations of any of the embodiments of the disclosure, after the switching to using the 2nd solenoid and the 6th solenoid to perform second auxiliary braking of the engine, the method further includes: determining a ratio of actual brake power to a calibration brake power corresponding to a current speed during the first auxiliary braking and the second auxiliary braking, respectively, to obtain a first ratio corresponding to the first auxiliary braking and a second ratio corresponding to the second auxiliary braking; and if the second ratio is less than the first ratio, switching to using the first auxiliary braking.

[0027] Optionally, the switching to the first auxiliary brake if the second ratio is less than the first ratio includes: if the second ratio is less than the first ratio, switching to the first auxiliary brake in any state of the engine.

[0028] In some optional implementations of any of the embodiments of the present disclosure, the switching to the second auxiliary brake of the engine by the 2nd electromagnetic valve and the 6th electromagnetic valve if the current braking power is less than the preset threshold value includes: if the current braking power is less than the preset threshold value, switching to the second auxiliary brake of the engine by the 2nd electromagnetic valve and the 6th electromagnetic valve in the normal state of the engine; and issuing a fault information by the engine to update the state of the engine to the fault state.

[0029] In these implementations, the state of the engine is in the normal state, and the second auxiliary brake can be switched to, and in the fault state, the second auxiliary brake cannot be switched to, that is, after the second auxiliary brake is switched to, if the first auxiliary brake is switched back, the second auxiliary brake cannot be switched to again. Until the state of the engine is modified to the normal state, the second auxiliary brake can be switched to.

[0030] In some optional implementations of any of the embodiments of the present disclosure, the preset threshold value is a product of a calibrated braking power in the first auxiliary brake and a preset coefficient, and the preset coefficient is a difference between 1 and an empirical value percentage of a reduction in braking power when the electromagnetic valve fails.

[0031] In some optional implementations of any of the embodiments of the present disclosure, the control lines of the 3rd electromagnetic valve and the 5th electromagnetic valve are first control lines, and the control lines of the 2nd electromagnetic valve and the 6th electromagnetic valve are second control lines; the first auxiliary brake of the engine by the 3rd electromagnetic valve and the 5th electromagnetic valve includes: turning on the 3rd electromagnetic valve and the 5th electromagnetic valve in the first control lines; and the second auxiliary brake of the engine by the 2nd electromagnetic valve and the 6th electromagnetic valve includes: turning on the 2nd electromagnetic valve and the 6th electromagnetic valve in the second control lines.

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

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

[0034] The disclosure also provides an engine electromagnetic valve based braking method according to the embodiments of the disclosure. The engine electromagnetic valve based braking method comprises:

[0035] When the engine braking is calibrated, a set of engine speed based braking power data a is obtained.

[0036] Two engine electromagnetic valves are added to the rocker shaft seat of gears 2 and 6, and the original engine electromagnetic valves of gears 3 and 5 remain unchanged. The control circuit of gears 3 and 5 is set to 0 circuit (corresponding to the first control circuit), and the control circuit of gears 2 and 6 is set to 1 circuit (corresponding to the second control circuit).

[0037] After the braking is turned on, the ECU defaults to turn on the 0 circuit, that is, the engine electromagnetic valves of gears 3 and 5 are turned on, and the ECU adds a self-checking strategy. If the corresponding calibrated braking power at this time is a1, the actual braking power is less than a1x(1-x%), where x is the braking power reduction empirical value percentage when the engine electromagnetic valve fails, and b1 is the actual power at this time, b1 / a1 is recorded, and then the 1 circuit is switched, that is, the engine electromagnetic valves of gears 3 and 5 are turned off, and the engine electromagnetic valves of gears 2 and 6 are turned on. The corresponding calibrated braking power at this time is a2, and the actual braking power is b2. If b2 / a2<b1 / a1, then switch back to the 0 circuit. In order to prevent the 0 circuit from switching back to the 1 circuit, the corresponding strategy is adopted: after the 0 circuit is switched to the 1 circuit, the engine sends a fault, and this fault state is eliminated after subsequent maintenance. Switching from the 0 circuit to the 1 circuit must be in a normal state of the engine, and switching from the 1 circuit to the 0 circuit does not limit the working state of the engine.

[0038] Figure 2 A control circuit diagram of an engine electromagnetic valve is shown according to the embodiments of the disclosure.

[0039] The embodiments of the disclosure provide an engine electromagnetic valve based braking device, which is used to execute the engine electromagnetic valve based braking method described in the above embodiments, as shown in Figure 3 The engine includes a gear 3 electromagnetic valve, a gear 5 electromagnetic valve, a gear 2 electromagnetic valve corresponding to the same cylinder as the gear 3 electromagnetic valve, and a gear 6 electromagnetic valve corresponding to the same cylinder as the gear 5 electromagnetic valve; the device includes: a first braking unit 301 configured to adopt the gear 3 electromagnetic valve and the gear 5 electromagnetic valve to perform first auxiliary braking of the engine in response to obtaining a braking signal; and a second braking unit 302 configured to switch to adopt the gear 2 electromagnetic valve and the gear 6 electromagnetic valve to perform second auxiliary braking of the engine if the current braking power is less than a preset threshold.

[0040] The engine electromagnetic valve based brake device provided by the above embodiments of the present disclosure has the same beneficial effects as the method adopted, run or implemented by the stored application program.

[0041] The engine electromagnetic valve based brake method provided by the above embodiments of the present disclosure has the same beneficial effects as the method adopted, run or implemented by the stored application program.

[0042] Please refer to Figure 4 , which shows a schematic diagram of an electronic device provided by some embodiments of the present disclosure. As Figure 4 shown, the electronic device 40 includes a processor 400, a memory 401, a bus 402 and a communication interface 403, the processor 400, the communication interface 403 and the memory 401 are connected through the bus 402; the memory 401 stores a computer program executable on the processor 400, and the processor 400 executes the computer program to perform the method provided by any of the preceding embodiments of the present disclosure.

[0043] Among them, the memory 401 can contain a high-speed random access memory (RAM: Random Access Memory), and can 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 can be wired or wireless), and the Internet, wide area network, local area network, metropolitan area network, etc. can be used.

[0044] The bus 402 can be an ISA bus, a PCI bus or an EISA bus, etc. The bus can be divided into address bus, data bus, control bus, etc. Among them, the memory 401 is used to store programs, and the processor 400 executes the programs after receiving execution instructions. The engine electromagnetic valve based brake method disclosed in any of the preceding embodiments of the present disclosure can be applied to the processor 400 or implemented by the processor 400.

[0045] The processor 400 can be an integrated circuit chip with signal processing capability. In implementation, the steps of the above method can be completed by integrated logic circuits or instructions in the form of software in the processor 400. The processor 400 described above can be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; can also be a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a ready programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component. 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. The steps of the method disclosed in combination with the embodiments of the present disclosure can be directly embodied as a hardware code processor for execution, or a combination of hardware and software modules in the code processor for execution. The software module can be located in 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 in the art. The storage medium is located in the memory 401, and the processor 400 reads the information in the memory 401, and combines the hardware to complete the steps of the above method.

[0046] The electronic device provided by the embodiments of the present disclosure and the engine solenoid valve-based braking method provided by the embodiments of the present disclosure have the same beneficial effects as the method they adopt, operate or implement.

[0047] The present disclosure also provides a computer readable storage medium corresponding to the engine solenoid valve-based braking method provided by the preceding embodiments. Please refer to Figure 5 The computer readable storage medium shown is an optical disc 50, and a computer program (i.e. program product) is stored on the optical disc 50. When the computer program is run by a processor, the engine solenoid valve-based braking method provided by any of the preceding embodiments will be executed.

[0048] It should be noted that examples of the computer readable storage medium can 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, magnetic storage medium, which will not be described one by one here.

[0049] The computer readable storage medium provided by the above-mentioned embodiments of the present disclosure has the same beneficial effects as the method for braking based on the electromagnetic valve in the engine provided by the embodiments of the present disclosure, and has the same beneficial effects as the method adopted, run or implemented by the application program stored therein.

[0050] It should be noted that:

[0051] It should be noted that:

[0052] From the above description of the embodiments, those skilled in the art can clearly understand that the above-mentioned embodiment method can be realized by means of software and the necessary general hardware platform, of course, it can also be realized by hardware, but in many cases the former is a better embodiment. Based on such understanding, the technical solutions of the present disclosure can be embodied in the form of a software product in essence or in the form of a contribution to the prior art. The computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk), and includes a plurality of instructions for making a terminal (which can be a mobile phone, computer, server, air conditioner, or network device, etc.) execute the method 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 merely specific embodiments of the present disclosure, but the present disclosure is not limited to the above-mentioned specific embodiments. The above-mentioned specific embodiments are merely illustrative and not restrictive, and those skilled in the art can make many forms under the inspiration of the present disclosure without departing from the scope of the present disclosure and the scope of protection of the claims.

Claims

1. A brake method based on solenoid valves in an engine, characterized by, 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 auxiliary braking of the engine is performed by using the 2nd gear solenoid valve and the 6th gear solenoid valve.

2. The method of claim 1, wherein, After 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: Determining ratios of actual braking power to a standard braking power corresponding to a current speed during the first auxiliary braking and the second auxiliary braking, respectively, to 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 of claim 1, wherein, 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 engine is in a normal working state, 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; The engine sends fault information to update the working state of the engine to a fault state.

4. The method of claim 2, wherein, If the second ratio is less than the first ratio, switching to the first auxiliary braking comprises: When the operating 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 of claim 1, wherein, The control circuits of the 3rd gear solenoid valve and the 5th gear solenoid valve are the first control circuit, and the control circuits of the 2nd gear solenoid valve and the 6th gear solenoid valve are the second control circuit; 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 brake device based on a solenoid valve in an engine, characterized by 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 employ the 3rd solenoid valve and the 5th solenoid valve to perform a first auxiliary brake of the engine in response to obtaining a brake signal; A second brake unit configured to employ the 2nd solenoid valve and the 6th solenoid valve to perform a second auxiliary brake of the engine if a current brake power is less than a preset threshold.

9. An electronic device comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, characterized in that, The processor executes the computer program to implement the method of any one of claims 1-7.

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

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