Clutch-type air compressor system and control method and control device thereof

Abstract

The present application relates to the technical field of air compressor, and provides a clutch type air compressor system and a control method and device thereof. The clutch type air compressor system comprises a clutch type air compressor, a natural suction pipeline connected with the atmosphere, a supercharged intake pipeline connected with an engine intake pipe, and an intake control valve arranged in front of an air inlet of the clutch type air compressor. The natural suction pipeline and the supercharged intake pipeline are connected with the air inlet of the clutch type air compressor through the intake control valve, and the intake control valve can selectively conduct the natural suction pipeline or the supercharged intake pipeline. The air inlet of the clutch type air compressor is connected with the natural suction pipeline and the supercharged intake pipeline, and the natural suction pipeline or the supercharged intake pipeline is selectively conducted through the intake control valve, so that the clutch type air compressor system has the advantages of large displacement, small size, energy saving and consumption reduction, and engine power improvement.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air compressor, in particular to a clutch type air compressor system and a control method and a control device thereof. BACKGROUND

[0002] The air compressor can provide compressed air for the vehicle. The conventional air compressor sucks air from the supercharged intake pipe, has the advantages of large displacement, small volume and light weight; but as it needs to compete for air with the engine (the supercharged intake pipe is used to supply air to the engine), it will consume engine power at the same time, causing high engine oil consumption.

[0003] With the development of technology, the clutch type air compressor is gradually used in vehicles. The clutch type air compressor integrates the clutch inside the air compressor, and realizes the unloading of the air compressor through the separation function of the clutch, thereby playing the role of energy saving and reducing oil consumption. The clutch type air compressor adopts a natural aspiration mode, i.e. it sucks air from the atmosphere rather than from the supercharged intake pipe, and has the problem of small displacement. In order to meet the displacement requirement, the clutch type air compressor often adopts double-pole compression, resulting in large volume and heavy weight, which is not conducive to space arrangement.

[0004] It should be noted that the information disclosed in the above background section is only used to strengthen the understanding of the background of the present application, and therefore can include information that does not constitute prior art known to those of ordinary skill in the art. SUMMARY

[0005] Therefore, the present application provides a clutch type air compressor system and a control method and a control device thereof. The air inlet of the clutch type air compressor is connected with the natural aspiration pipe and the supercharged intake pipe at the same time, and the air inlet control valve arranged in front of the air inlet of the clutch type air compressor is used to selectively conduct the natural aspiration pipe or the supercharged intake pipe, so that the clutch type air compressor system has the advantages of large displacement, small volume, energy saving, reducing consumption and improving engine power.

[0006] According to one aspect of the present application, a clutch type air compressor system is provided, comprising a clutch type air compressor, a natural aspiration pipe connected with the atmosphere and a supercharged intake pipe leading to the engine intake pipe; the air inlet of the clutch type air compressor is connected with the natural aspiration pipe and the supercharged intake pipe; the clutch type air compressor system further comprises an air inlet control valve arranged in front of the air inlet of the clutch type air compressor, the natural aspiration pipe and the supercharged intake pipe are connected with the air inlet of the clutch type air compressor through the air inlet control valve, and the air inlet control valve can selectively conduct the natural aspiration pipe or the supercharged intake pipe.

[0007] In some embodiments, the air inlet control valve comprises a two-position five-way electromagnetic valve.

[0008] In some embodiments, the clutch-type air compressor system further comprises an air filter, the naturally-aspirated air line and the supercharged air line communicate with the atmosphere through the air filter.

[0009] In some embodiments, the clutch-type air compressor system further comprises a supercharger and an intercooler connected in series, disposed in the supercharged air line, the supercharger is connected to the air filter, and the intercooler is connected to the engine air intake.

[0010] In some embodiments, the clutch-type air compressor system further comprises an air handling unit connected to the clutch-type air compressor.

[0011] In some embodiments, the clutch-type air compressor is a single-cylinder air compressor or a multi-cylinder air compressor.

[0012] According to yet another aspect of the present application, there is provided a control method of a clutch-type air compressor system, for controlling the clutch-type air compressor system as described in any of the above embodiments, comprising: determining whether the engine speed is within a set range; if yes, controlling the air intake control valve to conduct the supercharged air line, so that the clutch-type air compressor enters a supercharged air intake state; if no, controlling the air intake control valve to conduct the naturally-aspirated air line, so that the clutch-type air compressor enters a naturally-aspirated air intake state.

[0013] In some embodiments, the set range is 600 rpm to 2100 rpm.

[0014] In some embodiments, the determining whether the engine speed is within a set range comprises: determining whether the engine speed is lower than the minimum value of the set range; if yes, controlling the air intake control valve to conduct the naturally-aspirated air line, so that the clutch-type air compressor enters a naturally-aspirated air intake state; if no, determining whether the engine speed is higher than the maximum value of the set range; if yes, controlling the air intake control valve to conduct the naturally-aspirated air line, so that the clutch-type air compressor enters a naturally-aspirated air intake state; if no, controlling the air intake control valve to conduct the supercharged air line, so that the clutch-type air compressor enters a supercharged air intake state.

[0015] In some embodiments, before the determining whether the engine speed is within a set range, the method further comprises: determining the working state of the clutch of the clutch-type air compressor; when the clutch is in an engaged state, performing the step of determining whether the engine speed is within a set range.

[0016] According to still another aspect of the present application, there is provided a control device of a clutch-type air compressor system for implementing the control method according to any of the above embodiments.

[0017] The present application has at least the following advantages over the prior art:

[0018] The clutch-type air compressor system according to the present application, by connecting the air inlet of the clutch-type air compressor to both the natural air intake line and the supercharged air intake line, and by selectively connecting the natural air intake line or the supercharged air intake line through the air inlet control valve arranged at the front end of the air inlet of the clutch-type air compressor, can allow the clutch-type air compressor to intake air from the supercharged air intake line to improve the air charging efficiency and air charging amount when the engine air intake amount is sufficient, and can allow the clutch-type air compressor to intake air from the natural air intake line to avoid affecting the engine when it is necessary to ensure the engine air intake amount; thus, the clutch-type air compressor system according to the present application can have the advantages of large displacement, small size, energy saving, consumption reduction, and engine power improvement.

[0019] In addition, the clutch-type air compressor stops running in the unloading state to stop taking air from the supercharged air intake line, avoiding competing with the engine for air, further improving the engine power and reducing the fuel consumption.

[0020] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0021] The drawings incorporated into the specification and forming part thereof, illustrate embodiments in accordance with the present application and, together with the specification, serve to explain the principles of the application. It is expressly understood that the drawings described below are only some embodiments of the present application, and other drawings can be obtained from these drawings without creative labor for those skilled in the art.

[0022] Figure 1 The figure shows the architecture of the clutch-type air compressor system in the embodiment of the present application;

[0023] Figure 2 The figure shows the layout of the clutch-type air compressor system in the embodiment of the present application;

[0024] Figure 3 The figure shows the steps of the control method of the clutch-type air compressor system in the embodiment of the present application;

[0025] Figure 4 The figure shows the flowchart of the control method of the clutch-type air compressor system in the embodiment of the present application. DETAILED DESCRIPTION

[0026] Example implementations will now be described more fully with reference to the accompanying drawings. Example implementations may, however, be implemented in many different forms and should not be construed as limited to the implementations set forth herein. Rather, these implementations are provided as example embodiments so that this disclosure will be thorough and complete, and will fully convey the inventive concept to those skilled in the art.

[0027] The accompanying drawings are included to provide a further understanding of the present application, and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments of the present application and, together with the description, serve to explain the principles of the present application. In the drawings:

[0028] The flow charts shown in the drawings are only exemplary illustrations, and do not necessarily include all the steps. For example, some steps can be broken down, some steps can be combined or partially combined, and the actual execution order can be changed according to actual conditions.

[0029] It should be noted that the embodiments of the present application and the features in different embodiments can be combined with each other without conflict.

[0030] Figure 1 The main architecture of the clutch type air compressor system in the embodiment of the present application is shown; referring to Figure 1 The clutch type air compressor system provided by the embodiment of the present application includes:

[0031] The clutch type air compressor 10, the natural suction pipeline P1 connected to the atmosphere, and the supercharged intake pipeline P2 leading to the engine intake pipe 20, the air inlet of the clutch type air compressor 10 is connected to the natural suction pipeline P1 and the supercharged intake pipeline P2.

[0032] The air intake control valve 30 is arranged at the front end of the air inlet of the clutch type air compressor 10, the natural suction pipeline P1 and the supercharged intake pipeline P2 are connected to the air inlet of the clutch type air compressor 10 through the air intake control valve 30, and the air intake control valve 30 can selectively conduct the natural suction pipeline P1 or the supercharged intake pipeline P2.

[0033] The clutch type air compressor system described above connects the air inlet of the clutch type air compressor 10 to the natural suction pipeline P1 and the supercharged air inlet pipeline P2 at the same time, and selectively guides the natural suction pipeline P1 or the supercharged air inlet pipeline P2 through the air inlet control valve 30 arranged at the front end of the air inlet of the clutch type air compressor 10, so that the clutch type air compressor 10 can be allowed to inhale air from the supercharged air inlet pipeline P2 to improve the air charging efficiency and the air charging amount when the engine air intake is sufficient, and the clutch type air compressor 10 can be made to inhale air from the natural suction pipeline P1 to avoid affecting the engine when it is necessary to ensure the engine air intake; in this way, the clutch type air compressor system described above can have the advantages of large displacement, small size, energy saving, consumption reduction, and engine power improvement.

[0034] In addition, the clutch type air compressor 10 stops running in the unloading state to stop inhaling air from the supercharged air inlet pipeline P2, so that the air can be avoided from being robbed from the engine, and the engine power can be further improved and the fuel consumption can be reduced.

[0035] In the specific product implementation, the air inlet control valve 30 can be a valve arranged at the front end of the air inlet of the clutch type air compressor 10, and the natural suction pipeline P1 and the supercharged air inlet pipeline P2 are connected to different air paths of the air inlet control valve 30. Alternatively, the air inlet control valve 30 can include two or more valves arranged in the natural suction pipeline P1 and the supercharged air inlet pipeline P2, respectively.

[0036] In some embodiments, the air inlet control valve 30 includes a two-position five-way electromagnetic valve. The two-position five-way electromagnetic valve is arranged at the front end of the air inlet of the clutch type air compressor 10, and the natural suction pipeline P1 and the supercharged air inlet pipeline P2 are connected to different air paths of the two-position five-way electromagnetic valve, so as to realize that in one working state, the two-position five-way electromagnetic valve guides the natural suction pipeline P1 and cuts off the supercharged air inlet pipeline P2, so that the clutch type air compressor 10 inhales air from the natural suction pipeline P1, and at this time, the supercharged air inlet pipeline P2 only supplies the engine air inlet pipe 20 to ensure the engine power; in another working state, the two-position five-way electromagnetic valve guides the supercharged air inlet pipeline P2 and cuts off the natural suction pipeline P1, so that the clutch type air compressor 10 inhales air from the supercharged air inlet pipeline P2, and at this time, the air charging efficiency of the clutch type air compressor 10 can be improved.

[0037] Figure 2 The specific layout of the clutch type air compressor system in the embodiments of the present application is shown; in combination with Figure 1 and Figure 2 In some embodiments, the clutch type air compressor system further includes an air filter 40, and the natural suction pipeline P1 and the supercharged air inlet pipeline P2 Figure 2 are connected to the atmosphere through the air filter 40 (in which the supercharged air inlet pipeline P2 is mainly shown by a solid arrow, and the natural suction pipeline P1 is mainly shown by a hollow arrow).

[0038] The air entering the vehicle is filtered and purified through the air filter element 40 to ensure that the air input to subsequent components, including the clutch air compressor 10 and the engine intake pipe 20, is clean.

[0039] In some embodiments, the clutch air compressor system further includes: a connected supercharger 50 and an intercooler 60 , which are disposed in the supercharged air intake pipe P2 , the supercharger 50 being connected to the air filter element 40 , and the intercooler 60 being connected to the engine air intake pipe 20 .

[0040] The supercharger 50 can be turbocharged to achieve gas supercharging. The intercooler 60 is a supporting component of the turbocharger, which is used to reduce the temperature of the high-temperature gas after supercharging to reduce the heat load of the engine, increase the intake volume, and thus increase the power of the engine.

[0041] The clutch air compressor 10 is arranged at the rear end of the intercooler 60 and can take air from the turbocharger to improve the air pumping efficiency and meet the requirements of large displacement, low weight and small volume.

[0042] In some embodiments, the clutch air compressor system further includes an air processing unit (APU) 70 connected to the clutch air compressor 10. The air processing unit 70 is used to provide an air pressure signal to the clutch air compressor 10 to control the start and stop of the clutch air compressor 10.

[0043] In some embodiments, the clutched air compressor 10 is a single-cylinder air compressor. By placing the clutched air compressor 10 at the rear end of the intercooler 60, the air volume of the clutched air compressor 10 can be greatly increased, thereby enabling a single-cylinder air compressor to meet displacement requirements. In some embodiments, the clutched air compressor 10 is a multi-cylinder air compressor, such as a two-cylinder air compressor or an air compressor with more cylinders, to meet higher displacement requirements.

[0044] Embodiments of the present invention also provide a method for controlling a clutched air compressor system, for controlling a clutched air compressor system as described in any of the above embodiments. The features and principles of the clutched air compressor system described in any of the above embodiments are applicable to the control method embodiments for the clutched air compressor system. In the following control method embodiments, the features and principles of the clutched air compressor system that have already been explained will not be repeated.

[0045] Figure 3 The main steps of the control method of the clutch air compressor system in the embodiment of the present invention are shown; Figures 1 to 3 As shown, the control method of the clutch air compressor system provided by the embodiment of the present invention includes:

[0046] S810, determine whether the engine speed is in a set interval;

[0047] S820, if yes, control the intake control valve 30 to conduct the supercharged intake pipeline P2, so that the clutch type air compressor 10 enters the supercharged intake state;

[0048] S830, if no, control the intake control valve 30 to conduct the naturally aspirated pipeline P1, so that the clutch type air compressor 10 enters the naturally aspirated state.

[0049] The set interval can be set to different interval values according to different vehicles; for the same vehicle, different set intervals can also be provided under different driving conditions to meet the engine intake requirements under different driving conditions. When the engine speed is in the set interval, it indicates that the engine intake amount is sufficient at this time, so the supercharged intake pipeline P2 is conducted to make the clutch type air compressor 10 supercharged intake to improve the air charging efficiency of the clutch type air compressor 10; if the engine speed is less than the set interval, it indicates that the engine intake amount is insufficient at this time, so the clutch type air compressor 10 is naturally aspirated to avoid competing with the engine for air; if the engine speed is greater than the set interval, the engine is running at high speed at this time, driving the clutch type air compressor 10 to run at high speed, so the clutch type air compressor 10 does not need to be supercharged intake to meet the air charging demand.

[0050] In one embodiment, when the engine speed is between 600 rpm and 2100 rpm, the clutch type air compressor 10 enters the supercharged intake state. That is, in this embodiment, the set interval is 600 rpm to 2100 rpm, and the corresponding speed of the clutch type air compressor 10 is about 1000 rpm to 2500 rpm (the specific compressor speed value depends on the transmission).

[0051] Specifically, the engine intervenes in turbocharging at high speed (> 2100 rpm), and the intervention speed is related to the displacement of the engine. The main purpose is to improve the power and torque of the engine. Therefore, when defining the high speed interval of the turbocharged intake of the clutch type air compressor 10, the power and torque requirements of the engine should be considered to avoid competing with the engine for air at high speed. When the engine is running at low speed (600 rpm ~ 2100 rpm), the turbocharged intake does not need to intervene in the engine, and the turbocharged air can be introduced into the clutch type air compressor 10 through the intake control valve 30 to realize large displacement air charging of the clutch type air compressor 10. When the engine speed is very low (< 600 rpm), the engine intake amount is insufficient, so the clutch type air compressor 10 is naturally aspirated to avoid competing with the engine for air.

[0052] In some embodiments, before determining whether the engine speed is in the set interval, the method can further comprise: judging the working state of the clutch of the clutch type air compressor 10; and when the clutch is in the engaged state, performing the step of determining whether the engine speed is in the set interval.

[0053] In some embodiments, determining whether the engine speed is in the set interval can specifically comprise: judging whether the engine speed is lower than the minimum value of the set interval; if yes, controlling the air intake control valve 30 to be in the on state of the naturally aspirated pipeline P1, so that the clutch type air compressor 10 is in the naturally aspirated state; if no, continuing to judge whether the engine speed is higher than the maximum value of the set interval; if yes, controlling the air intake control valve 30 to be in the on state of the naturally aspirated pipeline P1, so that the clutch type air compressor 10 is in the naturally aspirated state; if no, controlling the air intake control valve 30 to be in the on state of the supercharged intake pipeline P2, so that the clutch type air compressor 10 is in the supercharged intake state.

[0054] Figure 4 The specific flow of the control method of the clutch type air compressor system in the embodiments of the present application is shown; in combination with Figures 1 to 4 As shown in the figure, in some embodiments, the implementation process of the control method of the clutch type air compressor system can comprise the following steps.

[0055] S910, judging the working state of the clutch of the clutch type air compressor 10.

[0056] S920, when the clutch is in the disengaged state, the clutch type air compressor 10 stops running and does not need to take air.

[0057] S930, when the clutch is in the engaged state, continuing to judge whether the engine speed is lower than the minimum value of the set interval.

[0058] S940, in the case that the engine speed is lower than the minimum value of the set interval, controlling the air intake control valve 30 to be in the on state of the naturally aspirated pipeline P1, so that the clutch type air compressor 10 is in the naturally aspirated state.

[0059] S950, in the case that the engine speed is not lower than the minimum value of the set interval, continuing to judge whether the engine speed is higher than the maximum value of the set interval.

[0060] S960, if the engine speed is higher than the maximum value of the set interval, controlling the air intake control valve 30 to be in the on state of the naturally aspirated pipeline P1, so that the clutch type air compressor 10 is in the naturally aspirated state.

[0061] S970, if the engine speed is not higher than the maximum value of the set interval, controlling the air intake control valve 30 to be in the on state of the supercharged intake pipeline P2, so that the clutch type air compressor 10 is in the supercharged intake state.

[0062] By the control logic, different driving conditions are met, so that the clutch type air compressor system has the advantages of large displacement, high inflation efficiency, light weight and small size.

[0063] The control method of the clutch type air compressor system of the present application can be executed by a controller of the vehicle, such as an electronic control unit (ECU). The embodiments of the present application also provide a control device of the clutch type air compressor system, which can be used to implement the control method described in any of the above embodiments, so as to conduct the pressurized intake pipe P2 when the engine intake amount is sufficient, and allow the clutch type air compressor 10 to intake air from the pressurized intake pipe P2 to improve the inflation efficiency and the inflation amount, and conduct the natural intake pipe P1 when it is necessary to ensure the engine intake amount or when the pressurized intake is not needed, so as to make the clutch type air compressor 10 naturally intake air; in this way, the clutch type air compressor system has the advantages of large displacement, small size, energy saving and consumption reduction, and engine power improvement.

[0064] The control device of the clutch type air compressor system can be independently configured in the vehicle, or can be integrated in the controller of the vehicle, such as an electronic control unit. The control device of the clutch type air compressor system can be in the form of a function (program) module architecture, which can include modules for implementing each step of the control method of the clutch type air compressor system described above, such as modules for implementing steps S810, S820 and S830.

[0065] The control device of the clutch type air compressor system can be in the form of a general computing device, which can include a processing unit and a storage unit, and the storage unit stores executable instructions, and the executable instructions are executed by the processing unit to implement the control method of the clutch type air compressor system described in any of the above embodiments.

[0066] The storage unit can include programs / utilities with one or more program modules, including but not limited to: an operating system, one or more application programs, other program modules, and program data. The general computing device also includes a bus connecting the processing unit and the storage unit, and other platform components, which can include a storage unit bus, a peripheral bus, a graphics acceleration port, a processing unit bus, and the like. The general computing device can also communicate with one or more external devices, other computing devices of the vehicle, networks (such as local area networks LAN, wide area networks WAN and / or public networks such as the Internet), and the like.

[0067] The control device of the clutch type air compressor system can be in the form of a storage medium, which stores a program, and when the program is executed, the control method of the clutch type air compressor system described in any of the above embodiments is implemented.

[0068] The control device of the clutch type air compressor system can be in the form of a storage medium, which stores a program, and when the program is executed, the control method of the clutch type air compressor system described in any of the above embodiments is implemented.

[0069] The storage media can be any available media that can be accessed by a general purpose or special purpose computing device. The storage media can be stored on one or more computer readable media such as a hard disk, floppy disk, tape, flash memory, memory cards, compact disc ROM, digital video disc ROM, Blu-ray disc ROM, optical disc, solid state ROM, RAM, EEPROM, or any other memory storage devices. The program can be stored on one or more of the storage media.

[0070] The above description is further to combine the specific preferred embodiments of the present application, and cannot be considered as the specific implementation of the present application only limited to these descriptions. For those skilled in the art of the present application, without departing from the concept of the present application, a number of simple deductions or replacements can be made, which should be considered as belonging to the protection scope of the present application.

Claims

1. A control method of a clutch-type air compressor system, characterized by, The clutch type air compressor system comprises: a clutch type air compressor, a natural suction pipeline in communication with the atmosphere, a supercharged intake pipeline leading to an engine intake pipe, an intake control valve arranged at the front end of the air intake port of the clutch type air compressor, the natural suction pipeline and the supercharged intake pipeline being connected to the air intake port of the clutch type air compressor through the intake control valve, and the intake control valve being capable of selectively conducting the natural suction pipeline or the supercharged intake pipeline. The control method is used for controlling the clutch type air compressor system, comprising: determining whether the engine speed is located in a set interval of 600 rpm to 2100 rpm; if the engine speed is located in the speed interval of 600 rpm to 2100 rpm without turbocharged intake, controlling the intake control valve to conduct the supercharged intake pipeline, so that the clutch type air compressor enters a supercharged intake state; if the engine speed is located in a speed interval greater than 2100 rpm of turbocharged intake, or if the engine speed is located in a speed interval less than 600 rpm of insufficient intake, controlling the intake control valve to conduct the natural suction pipeline, so that the clutch type air compressor enters a natural suction state.

2. The control method according to claim 1, characterized by, The determination of whether the engine speed is located in the set interval of 600 rpm to 2100 rpm comprises: judging whether the engine speed is lower than the minimum value of the set interval; if lower, controlling the intake control valve to conduct the natural suction pipeline, so that the clutch type air compressor enters a natural suction state; if not lower, continuing to judge whether the engine speed is higher than the maximum value of the set interval; if higher, controlling the intake control valve to conduct the natural suction pipeline, so that the clutch type air compressor enters a natural suction state; if not higher, controlling the intake control valve to conduct the supercharged intake pipeline, so that the clutch type air compressor enters a supercharged intake state.

3. The control method according to claim 1, characterized by, Before the determination of whether the engine speed is located in the set interval of 600 rpm to 2100 rpm, further comprising: judging the working state of a clutch of the clutch type air compressor; when the clutch is in an engaged state, performing the step of determining whether the engine speed is located in the set interval of 600 rpm to 2100 rpm.

4. The control method according to claim 1, characterized by, The intake control valve comprises a two-position five-way electromagnetic valve.

5. The control method according to claim 1, characterized by, The clutch type air compressor system further comprises an air filter element, and the natural suction pipeline and the supercharged intake pipeline are in communication with the atmosphere through the air filter element.

6. The control method according to claim 5, characterized by, The clutch type air compressor system further comprises a supercharger and an intercooler connected in sequence, which are arranged in the supercharged intake pipeline, the supercharger is connected to the air filter element, and the intercooler is connected to the engine intake pipe.

7. The control method according to claim 1, characterized by, The clutch type air compressor system further comprises an air treatment unit connected to the clutch type air compressor.

8. The control method according to claim 1, characterized by, The clutch type air compressor is a single-cylinder air compressor or a multi-cylinder air compressor.

9. A control device for a clutch-type air compressor system, characterized by comprising: The control method is used for realizing the control method according to any one of claims 1-8.

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