Supercharger control system of engine altitude simulation cabin

Abstract

The utility model provides a supercharger control system of an engine altitude simulation cabin, and relates to the technical field of vehicle engines, the supercharger control system comprises a supercharger (1), an air inlet device (2) connected with the air inlet end of the supercharger (1), and an exhaust device connected with the exhaust end of the supercharger (1) through a connecting rod structure (3); the exhaust device comprises an exhaust executing mechanism (41), an intercooler (42) and a gas driving mechanism, the exhaust executing mechanism (41) is connected with the connecting rod structure (3) and the gas driving mechanism, and the gas driving mechanism is used for driving the exhaust executing mechanism (41) to enable the supercharger (1) to execute the exhaust action. The air driving mechanism replaces the pre-intercooling pressure to drive the supercharger to exhaust air, and the problem that the pre-intercooling pressure is inaccurate in simulation due to the fact that the barometric pressure in the altitude simulation cabin is the barometric pressure of the altitude where the altitude simulation cabin is located and deviates from the actual environment pressure is solved.

Description

Technical Field

[0001] The invention relates to the technical field of vehicle engines, and in particular to a supercharger control system of an engine altitude simulation cabin. Background Art

[0002] At present, altitude simulation cabins are mostly used to simulate the operating conditions of engines in plateau environments. When the engine is operating normally on the vehicle, the power source required to open the supercharger exhaust valve is the air pressure in front of the engine intercooler, and the vehicle ECU control is coordinated to determine the opening and closing timing and opening size of the exhaust valve. However, when simulating the operating conditions of the engine in the plateau environment by vacuuming the intake system and exhaust system of the engine in the altitude simulation cabin, the atmospheric pressure in the altitude simulation cabin where the engine and the supercharger are located is the atmospheric pressure at the altitude of the altitude simulation cabin, and the engine needs to simulate the operating conditions at multiple altitudes, which will cause the driving pressure of the driving unit of the supercharger exhaust valve actuator to deviate from the actual altitude application scenario under the simulated altitude; that is, the driving unit drives the diaphragm because of the pressure difference between the simulated pressure and the ambient pressure (the pressure in the actual simulation cabin), so the exhaust valve of the supercharger will be delayed when opening relative to the normal state. In the prior art, in order to ensure the authenticity of the actuator opening of the supercharger mechanical actuator-type diesel engine during the high-altitude test in the simulation cabin, it is necessary to repeatedly adjust the bolts of the supercharger actuator to balance the pressure during the test. The above-mentioned solution uses manual adjustment of the bolts, which is time-consuming and labor-intensive, and it is difficult to ensure the accuracy and responsiveness of the adjustment. Summary of the invention

[0003] The present application provides a supercharger control system for an engine altitude simulation cabin to at least solve the technical problems existing in the related art.

[0004] According to one aspect of an embodiment of the present application, a supercharger control system for an engine altitude simulation cabin is provided, comprising: a supercharger 1, an intake device 2 connected to the intake end of the supercharger 1, and an exhaust device connected to the exhaust end of the supercharger 1 via a connecting rod structure 3; the exhaust device comprises an exhaust actuator 41, an intercooler 42 and a gas driving mechanism, wherein the exhaust actuator 41 is respectively connected to the connecting rod structure 3 and the gas driving mechanism, and the gas driving mechanism is used to drive the exhaust actuator 41 to enable the supercharger 1 to perform an exhaust action.

[0005] As an alternative implementation, it further includes: an intercooler inlet pressure sensor 51, arranged in front of the intercooler 42, for obtaining the intercooler inlet pressure value P1; an intake pressure sensor 52, arranged between the intake device 2 and the intake end of the supercharger 1, for obtaining the intake pressure value P2; and an ambient pressure sensor 53, arranged inside the engine altitude simulation chamber, for obtaining the ambient pressure P3.

[0006] As an alternative implementation, it further includes a main control system 6, which is respectively connected to the gas driving mechanism, the intercooler inlet pressure sensor 51, the intake pressure sensor 52 and the ambient pressure sensor 53.

[0007] As an alternative implementation, the main control system 6 is configured to determine a target pressure value P4 based on P1, P2 and P3, and control the gas driving mechanism to output P4.

[0008] As an alternative implementation, P4 = P1 + (P3 - P2).

[0009] As an alternative implementation, the gas driving mechanism includes a compressed air control mechanism 43 and a pulse pressure regulating valve 44, and the main control system 6 is further configured to adjust the opening degree of the pulse pressure regulating valve 44 according to P4.

[0010] As an alternative implementation, it further includes: an actual pressure sensor 54, arranged on the gas driving mechanism, for obtaining the actual pressure value P output by the gas driving mechanism.

[0011] As an alternative implementation, the main control system 6 is further configured to adjust the opening degree of the pulse pressure regulating valve 44 according to the magnitude relationship between the actual pressure value P and the target pressure value P4.

[0012] As an alternative implementation, if P < P4, increase the opening degree of the pulse pressure regulating valve 44.

[0013] As an alternative implementation, if P > P4, decrease the opening degree of the pulse pressure regulating valve 44.

[0014] In an embodiment of the present application, a supercharger control system for an engine altitude simulation cabin is provided, comprising: a supercharger 1, an intake device 2 connected to the intake end of the supercharger 1, and an exhaust device connected to the exhaust end of the supercharger 1 through a connecting rod structure 3; the exhaust device comprises an exhaust actuator 41, an intercooler 42, and a gas drive mechanism, wherein the exhaust actuator 41 is connected to the connecting rod structure 3 and the gas drive mechanism, respectively, and the gas drive mechanism is used to drive the exhaust actuator 41 to enable the supercharger 1 to perform an exhaust action. The exhaust actuator 41 is driven by the gas drive mechanism to enable the supercharger 1 to perform an exhaust action, so that the gas drive mechanism replaces the intercooler pre-pressure to drive the supercharger 1 to exhaust, thereby avoiding the problem of pressure deviation of the intercooler pre-pressure due to the atmospheric pressure in the altitude simulation cabin where the engine and the supercharger 1 are located being the atmospheric pressure at the altitude of the altitude simulation cabin, and the altitude of the simulated working condition of the engine is different from the altitude of the altitude simulation cabin. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] 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.

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0017] Figure 1 It is a schematic diagram of a supercharger control system of an optional engine altitude simulation cabin provided according to an embodiment of the present application.

[0018] Reference numerals

[0019] 1Supercharger;

[0020] 2 air intake device;

[0021] 3-link structure;

[0022] 41 exhaust actuator, 42 intercooler, 43 compressed air control mechanism, 44 pulse pressure regulating valve;

[0023] 51 intercooler front pressure sensor, 52 intake pressure sensor, 53 ambient pressure sensor, 54 actual pressure sensor;

[0024] 6. Main control system. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0026] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0027] The engine altitude simulation cabin is a system for testing the application scenario where the engine has negative pressure in the intake and exhaust of high altitude by pumping air from the engine's intake and exhaust according to the altitude to be simulated. At this time, only the intake and exhaust system and the interior of the fuselage of the engine are in the altitude simulation state, and the surrounding environment of the engine is still in normal atmospheric pressure. At present, the altitude simulation cabin is mostly used to simulate the operating conditions of the engine in the plateau environment. However, when the operating conditions of the engine in the plateau environment are simulated by vacuumizing the intake and exhaust systems of the engine in the altitude simulation cabin, the atmospheric pressure in the altitude simulation cabin where the engine and the supercharger are located is the atmospheric pressure at the altitude of the altitude simulation cabin, and the engine needs to simulate the working conditions at multiple altitudes, which will cause the driving pressure of the driving unit of the supercharger exhaust valve actuator to deviate from the actual altitude in the application scenario under the simulated altitude; that is, the driving unit drives the diaphragm because of the pressure difference between the simulated pressure and the ambient pressure (the pressure in the actual simulation cabin), so the exhaust valve of the supercharger will be delayed when opening relative to the normal state. In the prior art, in order to ensure the authenticity of the actuator opening of the supercharger mechanical actuator-type diesel engine during the high-altitude test in the simulation cabin, it is necessary to repeatedly adjust the bolts of the supercharger actuator to balance the pressure during the test. The above-mentioned solution uses manual adjustment of the bolts, which is time-consuming and labor-intensive, and it is difficult to ensure the accuracy and responsiveness of the adjustment.

[0028] like Figure 1As shown, an embodiment of the present application provides a supercharger control system for an engine altitude simulation cabin, comprising: a supercharger 1, an intake device 2 connected to the intake end of the supercharger 1, and an exhaust device connected to the exhaust end of the supercharger 1 through a connecting rod structure 3; the exhaust device comprises an exhaust actuator 41, an intercooler 42 and a gas driving mechanism, wherein the exhaust actuator 41 is respectively connected to the connecting rod structure 3 and the gas driving mechanism, and the gas driving mechanism is used to drive the exhaust actuator 41 to enable the supercharger 1 to perform an exhaust action.

[0029] Specifically, the exhaust actuator 41 is driven by the gas driving mechanism to make the supercharger 1 perform the exhaust action, so that the gas driving mechanism replaces the pre-intercooler pressure to drive the supercharger 1 to exhaust, thereby avoiding the problem of pressure deviation of the pre-intercooler pressure due to the atmospheric pressure in the altitude simulation cabin where the engine and the supercharger 1 are located being the atmospheric pressure at the altitude of the altitude simulation cabin, and the altitude of the simulated working condition of the engine being different from the altitude of the altitude simulation cabin.

[0030] As an optional embodiment, it also includes: an intercooler front pressure sensor 51, which is arranged in front of the intercooler 42, and is used to obtain the intercooler front pressure value P1; an intake pressure sensor 52, which is arranged between the intake device 2 and the intake end of the supercharger 1, and is used to obtain the intake pressure value P2; an ambient pressure sensor 53, which is arranged in the engine altitude simulation cabin, and is used to obtain the ambient pressure P3.

[0031] The setting of multiple pressure sensors can further improve the real-time monitoring of the engine status and further improve the practicality and accuracy of the altitude simulation cabin.

[0032] As an optional implementation, it further includes a main control system 6, which is connected to the gas drive mechanism, the intercooler front pressure sensor 51, the intake pressure sensor 52 and the ambient pressure sensor 53 respectively.

[0033] As an optional implementation, the main control system 6 is configured to determine a target pressure value P4 according to P1, P2 and P3, and control the gas drive mechanism to output P4.

[0034] Specifically, the provision of multiple pressure sensors enables the main control system 6 to jointly determine the output pressure value of the gas drive mechanism according to the front pressure value P1 of the intercooler 42, the intake pressure value P2 of the intake device 2 and the ambient pressure value in the engine intake and exhaust altitude simulation cabin, thereby solving the technical problems in the prior art of requiring manual repeated adjustment of the bolts of the supercharger 1 actuator to balance the pressure during the test, which may be time-consuming and laborious, and difficult to ensure the accuracy and responsiveness of the adjustment. This improves the test efficiency in the altitude simulation cabin and improves the consistency and accuracy of the altitude simulation test with the actual situation.

[0035] As an optional implementation, it further includes a main control system 6, which is connected to the gas drive mechanism, the intercooler front pressure sensor 51, the intake pressure sensor 52 and the ambient pressure sensor 53 respectively.

[0036] As an optional implementation, the main control system 6 is configured to determine a target pressure value P4 according to P1, P2 and P3, and control the gas drive mechanism to output P4.

[0037] As an optional implementation, P4=P1+(P3-P2).

[0038] Specifically, when the intake and exhaust simulation environment chamber is running, the intake and exhaust of the engine enter the pressure under the altitude simulation. For example, when simulating an altitude of 2000m, the pressure value of P2 should be about 80kpa (absolute pressure), while the ambient pressure P3 in the plain area is about 101kpa, and there is a pressure difference of 21kpa between the two. Through the calculation method of P4=P1+(P3-P2), the accurate target pressure value is calculated, and then the control system controls the gas drive mechanism to output P4 to obtain an accurate experimental simulation effect.

[0039] As an optional implementation, the gas drive mechanism includes a compressed air control mechanism 43 and a pulse pressure regulating valve 44, and the main control system 6 is further configured to adjust the opening of the pulse pressure regulating valve 44 according to P4.

[0040] Specifically, the compressed air control mechanism 43 is used to control the exhaust of the supercharger 1 through the pulse pressure regulating valve 44. The compressed air may refer to clean air that has been pressurized by the air compressor system, and the pressure is generally between 6 and 8 bar.

[0041] As an optional implementation, it further includes: an actual pressure sensor 54, which is arranged on the gas drive mechanism and is used to obtain an actual pressure value P output by the gas drive mechanism.

[0042] As an alternative embodiment, the main control system 6 is further configured to adjust the opening degree of the pulse pressure regulating valve 44 according to the magnitude relationship between the actual pressure value P and the target pressure value P4.

[0043] Specifically, while using compressed air to replace the air pressure before the intercooler as the power source for the operation of the exhaust device of the supercharger 1, the pulse pressure regulating valve 44 is coordinated to further accurately control the pressure applied to the exhaust device of the supercharger 1, thereby solving the problem of differences between the environmental chamber test conditions and the actual operation of the vehicle.

[0044] As an alternative embodiment, if P < P4, increase the opening degree of the pulse pressure regulating valve 44.

[0045] As an alternative embodiment, if P > P4, decrease the opening degree of the pulse pressure regulating valve 44.

[0046] The serial numbers of the embodiments of the present application above are only for description and do not represent the superiority or inferiority of the embodiments.

[0047] If the integrated units in the above embodiments are implemented in the form of software function units and sold or used as independent products, they can be stored in the above computer-readable storage medium. Based on such an understanding, the technical solution of the present application, in essence, or the part that contributes to the prior art, or all or part of this technical solution, can be embodied in the form of a software product. This computer software product is stored in the storage medium and includes several instructions for causing one or more electronic devices (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application.

[0048] In the above embodiments of the present application, the descriptions of the various embodiments have their own emphases. For the parts not detailed in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0049] In the several embodiments provided by the present application, it should be understood that the disclosed client can be implemented in other ways. Among them, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division, and there can be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed couplings or direct couplings or communication connections to each other can be through some interfaces, and the indirect couplings or communication connections of the units or modules can be in an electrical or other form.

[0050] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution provided in this embodiment.

[0051] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0052] In the above embodiments of the present application, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0053] The above is only a preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A supercharger control system for an engine altitude simulation cabin, characterized in that: Comprising: A supercharger (1), an intake device (2) connected to the intake end of the supercharger (1), and an exhaust device connected to the exhaust end of the supercharger (1) through a connecting rod structure (3); the exhaust device includes an exhaust actuator (41), an intercooler (42) and a gas driving mechanism, wherein the exhaust actuator (41) is respectively connected to the connecting rod structure (3) and the gas driving mechanism, and the gas driving mechanism is used to drive the exhaust actuator (41) so that the supercharger (1) performs an exhaust action.

2. The supercharger control system of the engine altitude simulation cabin as claimed in claim 1, characterized in that: Further comprising: An intercooler front pressure sensor (51), arranged in front of the intercooler (42), for obtaining the intercooler front pressure value P1; An intake pressure sensor (52), arranged between the intake device (2) and the intake end of the supercharger (1), for obtaining the intake pressure value P2; An ambient pressure sensor (53), arranged in the engine altitude simulation chamber, for obtaining the ambient pressure P3.

3. The supercharger control system of the engine altitude simulation cabin as claimed in claim 2, characterized in that: Further comprising a main control system (6), which is respectively connected to the gas driving mechanism, the intercooler front pressure sensor (51), the intake pressure sensor (52) and the ambient pressure sensor (53).

4. The supercharger control system of the engine altitude simulation cabin as claimed in claim 3, characterized in that: The main control system (6) is configured to determine a target pressure value P4 according to P1, P2 and P3, and control the gas driving mechanism to output P4.

5. The supercharger control system of the engine altitude simulation cabin as claimed in claim 4, characterized in that: P4 = P1 + (P3 - P2).

6. The supercharger control system of the engine altitude simulation cabin as claimed in claim 4, characterized in that: The gas driving mechanism includes a compressed air control mechanism (43) and a pulse pressure regulating valve (44), and the main control system (6) is further configured to adjust the opening degree of the pulse pressure regulating valve (44) according to P4.

7. The supercharger control system of the engine altitude simulation cabin as claimed in claim 6, characterized in that: Further comprising: An actual pressure sensor (54), arranged in the gas driving mechanism, for obtaining the actual pressure value P output by the gas driving mechanism.

8. The supercharger control system of the engine altitude simulation cabin as claimed in claim 7, characterized in that: The main control system (6) is further configured to adjust the opening degree of the pulse pressure regulating valve (44) according to the magnitude relationship between the actual pressure value P and the target pressure value P4.

9. The supercharger control system of the engine altitude simulation cabin as claimed in claim 8, characterized in that: If P < P4, increase the opening degree of the pulse pressure regulating valve (44).

10. The supercharger control system of the engine altitude simulation cabin as claimed in claim 8, characterized in that: If P > P4, decrease the opening degree of the pulse pressure regulating valve (44).

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