Air flow and temperature control metering system

Abstract

The invention relates to an air flow and temperature control metering system which comprises an air inlet pipe, a total air inlet adjusting assembly, a temperature adjusting assembly and a control assembly, the air inlet pipe is provided with an air inlet end and an air supply end, and the total air inlet adjusting assembly is installed on the side, close to the air inlet end, of the air inlet pipe; the temperature adjusting assembly is installed at the position, located between the main air inlet adjusting assembly and the air supply end, of the air inlet pipe. The control assembly comprises a feedback module, a flow control module and a temperature control module. The total air inlet amount of the air inlet pipe can be controlled through the arranged total air inlet adjusting assembly, meanwhile, the feedback module feeds back the real-time flow of air in the air inlet pipe to the flow control module, and the flow control module controls the total air inlet adjusting assembly to act according to flow information. The temperature of air in the air inlet pipe can be controlled through the arranged temperature adjusting assembly, meanwhile, the feedback module feeds back the real-time temperature of the air in the air inlet pipe to the temperature control module, and the temperature control module controls the temperature adjusting assembly to act according to flow information.

Description

Technical Field

[0001] The invention relates to the technical field of engine bench intake flow rate regulation and monitoring, and in particular to an air flow rate temperature control and metering system. Background Art

[0002] A pressure regulating valve and a flow meter are usually configured between the engine and the air filter. The flow rate is controlled by the pressure regulating valve, and the engine flow is monitored by the flow meter.

[0003] For example, the engine test bench air intake pressure stabilization system proposed in the utility model patent with application number CN201721011092.9, wherein the system includes: an engine, an air filter and a flow meter, wherein the flow meter is arranged between the engine and the air filter, the system also includes a box, a partition and a damping tube, the box is a cube, one side of which is connected to the flow meter through a rear transition pipe, and the other side is connected to the engine through an outlet pipe, a pressure regulating valve is arranged on the outlet pipe, the partition is vertically arranged in the middle of the box, and the center line of the damping tube is vertically placed at one quarter of the bottom to the top of the partition.

[0004] However, due to the fluctuation characteristics of the intake air flow of the engine itself, it is difficult to accurately control the flow and temperature of the intake air. Summary of the invention

[0005] In view of this, it is necessary to provide an air flow temperature control metering system to solve the problem that it is difficult to accurately control the flow and temperature of the intake air due to the fluctuation characteristics of the intake air flow of the engine itself.

[0006] The present invention provides an air flow temperature control metering system, comprising an intake pipe, a total intake air regulating component, a temperature regulating component and a control component, the intake pipe having an intake end and an air supply end, the total intake air regulating component being installed on a side of the intake pipe close to the intake end, for controlling the amount of intake air entering the intake pipe, the temperature regulating component being installed on the intake pipe at a position between the total intake air regulating component and the air supply end, for regulating the temperature of the air in the intake pipe, the control component comprising a feedback module, a flow control module and a temperature control module, the feedback module being arranged on the intake pipe at a position between the temperature regulating component and the air supply end, for measuring the flow and temperature of the air in the intake pipe, the flow control module being electrically connected to the feedback module and the total intake air regulating component, and controlling the action of the total intake air regulating component according to flow information, the temperature control module being electrically connected to the feedback module and the temperature regulating component, and controlling the action of the temperature regulating component according to temperature information.

[0007] Furthermore, the total air intake adjustment component includes a first flow meter and a first electrically controlled valve installed in the air intake pipe.

[0008] Furthermore, the system also includes a pressure relief regulating component arranged in the intake pipe between the temperature regulating component and the feedback module, and the pressure relief regulating component has a pressure relief end connected to the intake pipe for releasing the pressure in the intake pipe.

[0009] Furthermore, the signal receiving end of the flow control module is electrically connected to the feedback module, and the signal sending end of the control module is electrically connected to the total air intake regulating component and the pressure relief regulating component, and the operation of the total air intake regulating component and the pressure relief regulating component is controlled according to the flow information.

[0010] Furthermore, the pressure relief regulating assembly includes a second flow meter and a second electrically controlled valve installed at the pressure relief port opened on the side wall of the intake pipe.

[0011] Furthermore, the temperature adjustment component includes a heater, a mixer, a control valve and a cooler. The total air intake adjustment component, the heater, the mixer and the feedback module are arranged in sequence on the intake pipe. The heater has a first air distribution end and a second air distribution end. The first air distribution end is connected to the mixer via the control valve, and the second air distribution end is connected to the mixer via the cooling.

[0012] Furthermore, the signal receiving end of the temperature control module is electrically connected to the feedback module, the signal sending end of the control module is electrically connected to the heater, the control valve and the cooler, and the heater, the control valve and the cooler are electrically controlled according to the flow information.

[0013] Furthermore, the feedback module includes a pressure sensor and a temperature sensor, the pressure sensor is electrically connected to the flow control module, and the temperature sensor is electrically connected to the temperature control module.

[0014] Furthermore, the system also includes a pressure-surge tank installed on the intake pipe between the intake end and the total intake regulating assembly.

[0015] Furthermore, the system also includes a one-way valve installed on the air intake pipe between the feedback module and the air delivery end.

[0016] Compared with the prior art, the total air intake volume of the intake pipe can be controlled by setting a total air intake regulating component. At the same time, the feedback module feeds back the real-time flow of the air in the intake pipe to the flow control module. The flow control module controls the action of the total air intake regulating component according to the flow information to accurately adjust the flow in the intake pipe. The temperature of the air in the intake pipe can be controlled by setting a temperature regulating component. At the same time, the feedback module feeds back the real-time temperature of the air in the intake pipe to the temperature control module. The temperature control module controls the action of the temperature regulating component according to the flow information to accurately adjust the temperature of the air in the intake pipe, thereby forming a closed-loop control of the flow and temperature with high control accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the overall structure of the air flow temperature control metering system provided in an embodiment of the present invention; Figure 2 A schematic diagram of flow control in an air flow temperature control metering system provided by an embodiment of the present invention; Figure 3 A schematic diagram of the operation of temperature control in the air flow temperature control metering system provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0018] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0019] like Figure 1 As shown, the present invention provides an air flow temperature control metering system, comprising an intake pipe 100, a total intake adjustment component 200, a temperature adjustment component 300 and a control component 400, wherein the intake pipe 100 has an intake end 110 and an air supply end 120, the total intake adjustment component 200 is installed on the side of the intake pipe 100 close to the intake end 110, and is used to control the intake amount entering the intake pipe 100, the temperature adjustment component 300 is installed on the intake pipe 100 at a position between the total intake adjustment component 200 and the air supply end 120, and is used to adjust the temperature of the air in the intake pipe 100, and the control component 4 ... 0 includes a feedback module 410, a flow control module 420 and a temperature control module 430. The feedback module 410 is arranged at a position of the intake pipe 100 between the temperature adjustment component 300 and the air supply end 120 to measure the flow rate and temperature of the air in the intake pipe 100. The flow control module 420 is electrically connected to the feedback module 410 and the total intake adjustment component 200, and controls the operation of the total intake adjustment component 200 according to the flow rate information. The temperature control module 430 is electrically connected to the feedback module 410 and the temperature adjustment component 300, and controls the operation of the temperature adjustment component 300 according to the temperature information.

[0020] During implementation, the total air intake volume of the intake pipe 100 can be controlled by the set total air intake adjustment component 200. At the same time, the feedback module 410 feeds back the real-time flow of the air in the intake pipe 100 to the flow control module 420. The flow control module 420 controls the operation of the total air intake adjustment component 200 according to the flow information to accurately adjust the flow in the intake pipe 100; the temperature of the air in the intake pipe 100 can be controlled by the set temperature adjustment component 300. At the same time, the feedback module 410 feeds back the real-time temperature of the air in the intake pipe 100 to the temperature control module 430. The temperature control module 430 controls the operation of the temperature adjustment component 300 according to the flow information to accurately adjust the temperature of the air in the intake pipe 100, thereby forming a closed-loop control of the flow and temperature with high control accuracy.

[0021] The intake pipe 100 in this embodiment is used to connect to the engine so as to facilitate the engine to inhale air, and has an intake end 110 and an air supply end 120, and the air supply end 120 of the intake pipe 100 is connected to the engine. It can be understood that the diameter and shape of the intake pipe 100 should be determined according to actual needs, which is not the focus of protection of this application and is not limited thereto.

[0022] The total air intake adjustment assembly 200 in this embodiment is installed on the side of the air intake pipe 100 close to the air intake end 110 to control the amount of air intake entering the air intake pipe 100 .

[0023] In one embodiment, the total intake air adjustment assembly 200 includes a first flow meter and a first electronically controlled valve installed in the intake pipe 100. The first flow meter is used to monitor the flow rate of the gas entering the intake pipe 100. At the same time, the first electronically controlled valve can control the flow rate in the intake pipe 100 by adjusting the opening and closing degree of the controller valve.

[0024] In order to improve the control accuracy of the flow rate and speed up the response speed, in one embodiment, the system also includes a pressure relief regulating component 210 arranged in the intake pipe 100 between the temperature regulating component 300 and the feedback module 410. The pressure relief regulating component 210 has a pressure relief end connected to the intake pipe 100 for releasing the pressure in the intake pipe 100.

[0025] Among them, the signal receiving end of the flow control module 420 is electrically connected to the feedback module 410, and the signal sending end of the control module is electrically connected to the total air intake regulating component 200 and the pressure relief regulating component 210, and controls the operation of the total air intake regulating component 200 and the pressure relief regulating component 210 according to the flow information.

[0026] The pressure relief regulating assembly 210 includes a second flow meter and a second electronically controlled valve installed at a pressure relief port opened on the side wall of the intake pipe 100 .

[0027] like Figure 2As shown, specifically, when the feedback module 410 detects that the air flow in the intake pipe 100 is too large, the opening degree of the first electric valve can be reduced, and the opening degree of the second electric control valve can be increased; on the contrary, when the feedback module 410 detects that the air flow in the intake pipe 100 is too small, the opening degree of the first electric valve can be increased, and the opening degree of the second electric control valve can be reduced; through the above setting, the dual valves are adjusted synchronously (the first electric control valve and the second electric control valve), the response speed is fast, and the closed-loop control adjustment accuracy is high.

[0028] The temperature adjustment component 300 in this embodiment is installed in the air intake pipe 100 at a position between the main air intake adjustment component 200 and the air supply end 120 to adjust the temperature of the air in the air intake pipe 100 .

[0029] like Figure 3 As shown, in one embodiment, the temperature adjustment component 300 includes a heater 310, a mixer 320, a control valve 330 and a cooler 340, and the total intake air adjustment component 200, the heater 310, the mixer 320 and the feedback module 410 are arranged in sequence on the intake pipe 100, and the heater 310 has a first air distribution end and a second air distribution end, the first air distribution end is connected to the mixer 320 via the control valve 330, and the second air distribution end is connected to the mixer 320 via the cooling.

[0030] Among them, after the heater 310 heats the air, a part of the gas flows into the mixer 320 through the control valve 330, and the other part of the gas flows into the mixer 320 after being cooled by the cooler 340. By adjusting the opening and closing degree of the control valve 330, as well as the power of the heater 310 and the cooler 340, the temperature can be quickly and accurately adjusted.

[0031] It can be understood that the heater 310 can adopt a structure such as a resistive heater, which has two air outlet ends (i.e., a first air distribution end and a second air distribution end), and the cooler 340 can adopt a structure such as a refrigerator. At the same time, the mixer 320 adopts a tank structure, and the hot air and cold air delivered by the mixer 320 and the control valve 330 are mixed in the tank body and returned to the air inlet pipe 100 after the temperature stabilizes.

[0032] Among them, the signal receiving end of the temperature control module 430 is electrically connected to the feedback module 410, and the signal sending end of the control module is electrically connected to the heater 310, the control valve 330 and the cooler 340, and controls the electrical operation of the heater 310, the control valve 330 and the cooler 340 according to the flow information.

[0033] Specifically, when the feedback module 410 detects that the temperature of the air in the intake pipe 100 is too high, the power of the heater 310 can be reduced, the opening degree of the control valve 330 can be reduced, and the power of the cooler 340 can be increased; on the contrary, when the feedback module 410 detects that the temperature of the air in the intake pipe 100 is too low, the power of the heater 310 can be increased, the opening degree of the control valve 330 can be increased, and the power of the cooler 340 can be reduced. The three-phase regulation (heater 310, control valve 330 and cooler 340) has a fast response speed and high closed-loop control regulation accuracy.

[0034] The control component 400 in this embodiment includes a feedback module 410, a flow control module 420 and a temperature control module 430. The feedback module 410 is arranged at a position of the intake pipe 100 between the temperature adjustment component 300 and the air supply end 120, and is used to measure the flow and temperature of the air in the intake pipe 100. The flow control module 420 is electrically connected to the feedback module 410 and the total intake adjustment component 200, and controls the operation of the total intake adjustment component 200 according to the flow information. The temperature control module 430 is electrically connected to the feedback module 410 and the temperature adjustment component 300, and controls the operation of the temperature adjustment component 300 according to the temperature information.

[0035] In one embodiment, the feedback module 410 includes a pressure sensor and a temperature sensor, the pressure sensor is electrically connected to the flow control module 420, and the temperature sensor is electrically connected to the temperature control module 430. It should be noted that the flow rate can be determined according to the air pressure in the intake pipe 100. Specifically, when the flow rate is constant, the flow rate in the pipe is proportional to the square of the pipe diameter. Therefore, the flow information can be fed back according to the detected pressure signal.

[0036] Among them, the flow control module 420 is a structure for controlling the valve according to the flow signal that can be thought of by those skilled in the art. At the same time, the temperature control module 430 is a structure for controlling the heater, valve and cooler according to the temperature signal that can be thought of by those skilled in the art. No further elaboration and explanation will be given here.

[0037] In order to improve the stability of the gas entering the intake pipe 100, in one embodiment, the system further includes a pressure stabilizing tank 111 installed in the intake pipe 100 between the intake end 110 and the total intake regulating assembly 200. Before entering the total intake regulating assembly 200, the air will flow into the pressure stabilizing tank 111 to ensure that the pressure of the air flowing into the total intake regulating assembly 200 remains stable. It is understandable that the pressure stabilizing tank 111 is a structure that can be thought of by those skilled in the art, and no further explanation and description will be given here.

[0038] In order to reduce the influence of reverse airflow on metering, in one embodiment, the system further includes a one-way valve 121 installed in the air intake pipe 100 between the feedback module 410 and the air supply end 120. The one-way valve 121 can prevent the air close to the engine from flowing in the direction pointing to the feedback module 410, thereby preventing the reverse airflow from affecting the accuracy of the detection of the feedback module 410.

[0039] Workflow: After the air enters the intake pipe 100, it first flows into the pressure-stabilizing tank 111 for pressure stabilization. Before being transported to the total intake adjustment component 200, the air flow rate here can be known through the first flow meter, and the intake flow rate is controlled by the first electric control valve. The air is split after passing through the heater 310. One part of the air enters the mixer 320 through the control valve 330, and the other part of the air enters the mixer 320 after being cooled by the cooler 340. The two parts of air are mixed in the mixer 320 and heat exchanged until the air at the required temperature is obtained and discharged from the air supply end 120. Before being discharged, it will flow through the feedback module 410. The feedback module 410 feeds back the air flow information and temperature information to the flow control module 420 and the temperature control module 430 respectively.

[0040] When the feedback module 410 detects that the air flow in the intake pipe 100 is too large, the opening degree of the first electric valve can be reduced, and the opening degree of the second electric control valve can be increased; on the contrary, when the feedback module 410 detects that the air flow in the intake pipe 100 is too small, the opening degree of the first electric valve can be increased, and the opening degree of the second electric control valve can be reduced; through the above setting, the dual valves are adjusted synchronously (the first electric control valve and the second electric control valve), the response speed is fast, and the closed-loop control adjustment accuracy is high.

[0041] When the feedback module 410 detects that the temperature of the air in the intake pipe 100 is too high, the power of the heater 310 can be reduced, the opening degree of the control valve 330 can be reduced, and the power of the cooler 340 can be increased; on the contrary, when the feedback module 410 detects that the temperature of the air in the intake pipe 100 is too low, the power of the heater 310 can be increased, the opening degree of the control valve 330 can be increased, and the power of the cooler 340 can be reduced. The three-phase regulation (heater 310, control valve 330 and cooler 340) has a fast response speed and high closed-loop control regulation accuracy.

[0042] Compared with the prior art: the total air intake adjustment component 200 is set to control the total air intake volume of the intake pipe 100. At the same time, the feedback module 410 feeds back the real-time flow of the air in the intake pipe 100 to the flow control module 420. The flow control module 420 controls the operation of the total air intake adjustment component 200 according to the flow information to accurately adjust the flow in the intake pipe 100; the temperature of the air in the intake pipe 100 is controlled by the temperature adjustment component 300. At the same time, the feedback module 410 feeds back the real-time temperature of the air in the intake pipe 100 to the temperature control module 430. The temperature control module 430 controls the operation of the temperature adjustment component 300 according to the flow information to accurately adjust the temperature of the air in the intake pipe 100, thereby forming a closed-loop control of the flow and temperature with high control accuracy.

[0043] The details are as follows: 1. The temperature and flow control involved in the present invention are all closed-loop controls, wherein the flow is adjusted by pressure feedback, the air inlet end 110 is stabilized by a pressure stabilizing tank 111, and a one-way valve 121 is installed at the air delivery end 120 to reduce the influence of reverse airflow on metering.

[0044] 2. Flow control and measurement logic: The total air intake regulating component 200 is composed of a high-precision first flow meter and a first electrically controlled valve, which identifies the total flow value in the total air intake regulating component 200 and controls the total flow of air entering the system from the pressure regulating tank 111 by adjusting the pipe orifice cross-sectional area through the first electrically controlled valve; at the same time, the pressure relief control regulating component 210 is composed of a high-precision second flow meter and a second electrically controlled valve, which controls the system leakage flow by controlling the pipe cross-sectional area, and adjusts the opening of the electrically controlled valve in the pressure relief control through the feedback flow and the demand flow, thereby forming a closed-loop control of the flow value; that is, the demand flow is calculated as A0=A2-A7, where A0 is the hydrangea flow and A7 is the pressure relief flow.

[0045] 3. The flow rate is regulated by the second electronically controlled valve in the pressure relief regulating component 210. The opening of the second electronically controlled valve is regulated by the relationship between the pressure feedback value and the required flow rate in the pressure relief regulating component 210 to control the intake pressure, thereby affecting the intake flow rate.

[0046] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. An air flow temperature control metering system, characterized in that: include: An air intake pipe having an air intake end and an air delivery end; A total air intake adjustment component, which is installed on the side of the air intake pipe close to the air intake end, and is used to control the amount of air entering the air intake pipe; A temperature regulating assembly installed in the air intake pipe at a position between the total air intake regulating assembly and the air delivery end, for regulating the temperature of the air in the air intake pipe; A control component, comprising a feedback module, a flow control module and a temperature control module, wherein the feedback module is arranged at a position of the intake pipe between the temperature adjustment component and the air supply end, and is used to measure the flow and temperature of the air in the intake pipe, the flow control module is electrically connected to the feedback module and the total intake adjustment component, and controls the operation of the total intake adjustment component according to the flow information, and the temperature control module is electrically connected to the feedback module and the temperature adjustment component, and controls the operation of the temperature adjustment component according to the temperature information.

2. The air flow temperature control metering system according to claim 1, characterized in that: The total air intake adjustment component includes a first flow meter and a first electric control valve installed in the air intake pipe.

3. The air flow temperature control metering system according to claim 2, characterized in that: The system also includes a pressure relief regulating component arranged in the intake pipe between the temperature regulating component and the feedback module. The pressure relief regulating component has a pressure relief end connected to the intake pipe for releasing the pressure in the intake pipe.

4. The air flow temperature control metering system according to claim 3, characterized in that: The signal receiving end of the flow control module is electrically connected to the feedback module, and the signal sending end of the control module is electrically connected to the total air intake regulating component and the pressure relief regulating component, and controls the actions of the total air intake regulating component and the pressure relief regulating component according to the flow information.

5. The air flow temperature control metering system according to claim 3, characterized in that: The pressure relief regulating assembly comprises a second flow meter installed at a pressure relief port opened on the side wall of the intake pipe and a second electrically controlled valve.

6. The air flow temperature control metering system according to claim 1, characterized in that: The temperature regulating component includes a heater, a mixer, a control valve and a cooler. The total air intake regulating component, the heater, the mixer and the feedback module are arranged in sequence on the air intake pipe. The heater has a first air distribution end and a second air distribution end. The first air distribution end is connected to the mixer via the control valve, and the second air distribution end is connected to the mixer via the cooling module.

7. The air flow temperature control metering system according to claim 6, characterized in that: The signal receiving end of the temperature control module is electrically connected to the feedback module, and the signal sending end of the control module is electrically connected to the heater, the control valve and the cooler, and controls the electrical operation of the heater, the control valve and the cooler according to the flow information.

8. The air flow temperature control metering system according to claim 1, characterized in that: The feedback module includes a pressure sensor and a temperature sensor. The pressure sensor is electrically connected to the flow control module, and the temperature sensor is electrically connected to the temperature control module.

9. The air flow temperature control metering system according to claim 1, characterized in that: The system also includes a pressure-surge tank installed on the intake pipe between the intake end and the total intake regulating assembly.

10. The air flow temperature control metering system according to claim 1, characterized in that: The system also includes a one-way valve installed on the air intake pipe between the feedback module and the air delivery end.

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