CN219015647U - Engine test device - Google Patents

Abstract

The present utility model relates to an engine test apparatus. The engine test apparatus includes: the valve assembly comprises a valve body and a throttle plate, the valve body is provided with a first opening, a second opening and a valve cavity, the first opening and the second opening are respectively communicated with the valve cavity, the throttle plate is rotatably arranged in the valve cavity, and the throttle plate can rotate in the valve cavity to adjust the opening; a first exhaust pipe in communication with the first opening; and one end of the second exhaust pipe is communicated with the second opening, and the other end of the second exhaust pipe is used for communicating with the engine. Can simulate the exhaust back pressure of different blast pipes through first blast pipe, need not many people and cooperate, and need not to change the blast pipe, be favorable to improving the experimental work efficiency of engine and operation convenience, reduce space occupation and test cost.

Description

Engine test device

Technical Field

The utility model relates to the technical field of engine exhaust back pressure tests, in particular to an engine test device.

Background

There are two tests in the engine test, one is a product consistency spot check test and the other is a endurance test, and as each type of engine has a corresponding exhaust back pressure requirement, the test type needs to be provided with an exhaust pipe matched with the engine for testing. However, because the exhaust pipes used by the engine have the characteristics of various types, large quantity, large occupied area and long length, two problems exist in the installation and storage processes: firstly, the conventional exhaust pipe is low in installation and use efficiency, and due to the length and weight, two persons have to cooperate. Secondly, occupation space is large, and with the continuous updating of machine type, the blast pipe kind can be more, and quantity is bigger, will occupy a large amount of space resource, consequently influences the work efficiency and the convenience of engine test.

Disclosure of Invention

Accordingly, it is necessary to provide an engine test apparatus capable of effectively improving the working efficiency and the operation convenience of the engine test.

The technical scheme is as follows: an engine test apparatus, the engine test apparatus comprising:

the valve assembly comprises a valve body and a throttle plate, the valve body is provided with a first opening, a second opening and a valve cavity, the first opening and the second opening are respectively communicated with the valve cavity, the throttle plate is rotatably arranged in the valve cavity, and the throttle plate can rotate in the valve cavity to adjust the opening; a first exhaust pipe in communication with the first opening; and one end of the second exhaust pipe is communicated with the second opening, and the other end of the second exhaust pipe is used for communicating with the engine.

Above-mentioned engine test device, in the test process, with engine and second blast pipe connection, because the throttle plate can rotate in the valve pocket, therefore, the engine is when carrying out the exhaust test, can adjust the aperture of valve pocket through the rotation of throttle plate, can simulate the exhaust back pressure of different blast pipes through first blast pipe, thereby can be suitable for the engine test of multiple model through a set of engine test device, only need install and dismantle the engine when the installation, need not many people to cooperate, and need not to change the blast pipe, be favorable to improving the work efficiency and the operating convenience of engine test, reduce space occupation and test cost.

In one embodiment, the valve assembly further comprises a butterfly valve actuator, the butterfly valve actuator is connected with the valve body, the throttle plate is provided with a connecting rod, the connecting rod is in driving connection with the butterfly valve actuator, and the butterfly valve actuator drives the throttle plate to rotate along the axis of the connecting rod.

In one embodiment, the valve assembly further comprises a heat sink coupled to the valve body, the heat sink configured to dissipate heat from the valve body.

In one embodiment, the heat dissipation parts are more than two, the valve body is provided with a guide cylinder, the guide cylinder is communicated with the valve cavity, the butterfly valve actuator is connected with one end of the guide cylinder, the connecting rod is in guide fit with the inner wall of the guide cylinder, and the heat dissipation parts are arranged at intervals along the height direction of the guide cylinder.

In one embodiment, the engine test device further comprises a cooling member, the cooling member is disposed corresponding to the heat dissipation member, and the cooling member is used for cooling the heat dissipation member.

In one embodiment, the engine test device further includes a temperature measurement member, the temperature measurement member is electrically connected with the cooling member, the temperature measurement member is configured to measure a temperature of the cooling member, and when the temperature of the cooling member is greater than a first preset temperature, a first signal is generated, and the cooling member is started after acquiring the first signal, so as to cool the cooling member; and when the temperature of the heat dissipation part is smaller than a second preset temperature, a second signal is generated, and the cooling part is closed after acquiring the second signal.

In one embodiment, the valve assembly further comprises a first reducing member, the first reducing member is provided with a first connecting port and a second connecting port, a port wall of the first connecting port is detachably connected with a port wall of the first opening, a port wall of the second connecting port is connected with the first exhaust pipe, and a diameter of the first connecting port is larger than a diameter of the second connecting port.

In one embodiment, the valve assembly further comprises a second reducing member, the first reducing member is provided with a third connecting port and a fourth connecting port, a port wall of the third connecting port is detachably connected with a port wall of the second opening, a port wall of the fourth connecting port is connected with the second exhaust pipe, and a diameter of the third connecting port is larger than a diameter of the fourth connecting port.

In one embodiment, the engine test device further comprises a base, the base comprises a supporting piece, a base plate and a connecting seat, the supporting piece is movably connected with the base plate through the connecting seat, the supporting piece is provided with a matching portion, the matching portion is used for being attached to the outer wall of the valve body, and the supporting piece is used for supporting the valve body.

In one embodiment, the connecting seat comprises an adjusting cylinder and a screw, one end of the adjusting cylinder is rotationally connected with the base plate, a threaded part is arranged on the inner wall of the adjusting cylinder, the adjusting cylinder is in threaded fit with the screw, and one end of the screw is rotationally connected with the supporting piece.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model.

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view showing the overall structure of an engine test apparatus according to an embodiment;

FIG. 2 is a schematic illustration of a valve assembly according to one embodiment;

FIG. 3 is an exploded schematic view of the valve assembly depicted in FIG. 2;

FIG. 4 is a flowchart illustrating steps performed by the engine test method according to one embodiment.

Reference numerals illustrate:

100. an engine test device; 110. a valve assembly; 111. a valve body; 112. a throttle plate; 113. a first opening; 114. a second opening; 115. a valve cavity; 117. a connecting rod; 118. a heat sink; 119. a guide cylinder; 120. a first exhaust pipe; 130. a second exhaust pipe; 140. a butterfly valve actuator; 150. a cooling member; 160. a first reducing member; 170. a second reducing member; 180. a base; 181. a support; 182. a substrate; 183. and a connecting seat.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The present utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the utility model, whereby the utility model is not limited to the specific embodiments disclosed below.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Referring to fig. 1 and 2, fig. 1 is a schematic diagram illustrating an overall structure of an engine test apparatus 100 according to an embodiment; FIG. 2 is a schematic diagram of a valve assembly 110 according to one embodiment; an engine test apparatus 100 according to an embodiment of the present utility model includes: valve assembly 110, first exhaust pipe 120, and second exhaust pipe 130. The valve assembly 110 includes a valve body 111 and a throttle plate 112, the valve body 111 is provided with a first opening 113, a second opening 114 and a valve cavity 115, and the first opening 113 and the second opening 114 are respectively communicated with the valve cavity 115. The throttle plate 112 is rotatably disposed in the valve chamber 115, and the throttle plate 112 can rotate in the valve chamber 115 to adjust the opening degree. The first exhaust pipe 120 communicates with the first opening 113, and the second exhaust pipe 130 communicates with the second opening 114 at one end and communicates with the engine at the other end.

Above-mentioned engine test device 100, in the test process, with engine and second blast pipe 130 connection, because throttle plate 112 can rotate in valve pocket 115, therefore, the engine is when carrying out the exhaust test, can adjust the aperture of valve pocket 115 through the rotation of throttle plate 112, can simulate the exhaust back pressure of different blast pipes through first blast pipe 120, thereby can be suitable for the engine test of multiple model through a set of engine test device 100, only need install and dismantle the engine when the installation, need not many people to cooperate, and need not to change the blast pipe, be favorable to improving the work efficiency and the operating convenience of engine test, reduce space occupation and test cost.

Specifically, referring to fig. 1 and 2, the outer wall of the first opening 113 is provided with a connecting flange, and the outer wall of the second opening 114 is provided with a connecting flange. In this way, the connection and the disassembly of the first exhaust pipe 120 and the second exhaust pipe 130 are convenient, and the flange connection is beneficial to ensuring the connection stability and the tightness of the first exhaust pipe 120 and the second exhaust pipe 130 on the valve body 111, so that the installation and the disassembly are convenient.

Alternatively, the valve body 111 may be adjusted manually, electrically, pneumatically, hydraulically, or otherwise.

In one embodiment, referring to fig. 1 and 2, the valve assembly 110 further includes a butterfly valve actuator 140, the butterfly valve actuator 140 is connected to the valve body 111, the throttle plate 112 is provided with a connecting rod 117, the connecting rod 117 is in driving connection with the butterfly valve actuator 140, and the butterfly valve actuator 140 drives the throttle plate 112 to rotate along the axis of the connecting rod 117. In this way, the butterfly valve actuator 140 can conveniently control the opening degree of the throttle plate 112, and improve the operation precision, thereby improving the adjustment accuracy of the throttle plate 112. The embodiment provides only one specific embodiment of the valve body 111, but is not limited thereto.

In other embodiments, the valve body 111 may also be a ball valve, gate valve, throttle valve, plug valve, shut-off valve, or the like.

In one embodiment, referring to fig. 1 and 2, the valve assembly 110 further includes a heat dissipation member 118, the heat dissipation member 118 is connected to the valve body 111, and the heat dissipation member 118 is used for dissipating heat from the valve body 111. Thus, in the engine back pressure test, the exhaust gas of the engine releases a large amount of heat energy, and the heat dissipation member 118 can perform a heat dissipation function on the valve body 111, so that the service life of the device and the reliability of the test result are ensured by avoiding overheating of the valve body 111.

Alternatively, the heat sink 118 may be a heat sink, a heat sink grid, a water cooled heat sink structure, or other heat sink device.

Specifically, referring to fig. 1 and 2, the heat sink 118 is a metal heat sink, and the metal heat sink is connected to the valve body 111 by welding. In this way, the contact area with the air can be increased by the metal radiating fin, thereby improving the radiating effect of the valve body 111, and the valve has a simple structure and high reliability.

Further, referring to fig. 1 and 2, the heat dissipation elements 118 are more than two, the valve body 111 is provided with a guiding cylinder 119, the guiding cylinder 119 is communicated with the valve cavity 115, the butterfly valve actuator 140 is connected with one end of the guiding cylinder 119, the connecting rod 117 is in guiding fit with the inner wall of the guiding cylinder 119, and more than two heat dissipation elements 118 are arranged at intervals along the height direction of the guiding cylinder 119. For example, the heat sink 118 is six. In this way, on one hand, the butterfly valve actuator 140 can be far away from the valve cavity 115, so as to avoid a high temperature region, and on the other hand, more than two heat dissipation elements 118 are beneficial to further improving the heat dissipation effect, so that the stable work of the butterfly valve actuator 140 is guaranteed.

For further understanding and explanation of the height direction of the guide cylinder 119, taking fig. 2 as an example, the height direction of the guide cylinder 119 is a straight line S in fig. 2 ₁ In the direction indicated by any arrow.

In one embodiment, referring to fig. 1, the engine test apparatus 100 further includes a cooling member 150, where the cooling member 150 is disposed corresponding to the heat dissipation member 118, and the cooling member 150 is configured to cool the heat dissipation member 118. In this way, when the temperature of the valve body 111 is too high, the cooling member 150 can accelerate the heat dissipation efficiency of the heat dissipation member 118, thereby rapidly dissipating the heat of the valve body 111, ensuring the normal operation of the butterfly valve actuator 140, and improving the operational reliability of the valve assembly 110.

Alternatively, the cooling element 150 may be a fan, air conditioner, refrigerator, fan, spray, or other cooling device.

Specifically, referring to fig. 1, the cooling member 150 is a blower. The air outlet of the blower is disposed toward the heat sink 118. So, after the air-blower starts, can blow to the radiating member 118 to accelerate the air flow on the radiating member 118, improve the radiating effect of the radiating member 118, cool down the radiating member 118, simple structure, convenient control is favorable to guaranteeing the operational reliability of the valve assembly 110. The embodiment provides only one specific embodiment of the cooling member 150, but is not limited thereto.

In one embodiment, the engine test device 100 further includes a temperature measuring member (not shown in the figure), which is electrically connected to the cooling member 150, and the temperature measuring member is configured to measure the temperature of the cooling member 118, generate a first signal when the temperature of the cooling member 118 is greater than a first preset temperature, and start the cooling member 150 after acquiring the first signal, so as to cool the cooling member 118; when the temperature of the heat sink 118 is less than the second preset temperature, a second signal is generated, and the cooling member 150 is turned off after acquiring the second signal.

Alternatively, the temperature measuring mode of the temperature measuring member may be contact type temperature measuring, such as temperature sensor temperature measuring, temperature transmitter temperature measuring, or non-contact type temperature measuring, such as infrared temperature measuring, radiation type temperature measuring, etc., or other temperature measuring modes.

Specifically, the temperature measuring piece is a contact type temperature sensor. Thus, the automatic cooling device has the advantages of stable structure, reliable detection effect, low cost and convenient control, and is beneficial to realizing the automatic cooling of the cooling piece 150. The embodiment provides only a specific embodiment of the temperature measuring member, but is not limited thereto.

Referring to fig. 1 and 3, fig. 3 is an exploded schematic view of the valve assembly 110 shown in fig. 2; in one embodiment, the valve assembly 110 further includes a first reducing member 160. The first reducing member 160 is provided with a first connection port and a second connection port, the port wall of the first connection port is detachably connected with the port wall of the first opening 113, the port wall of the second connection port is connected with the first exhaust pipe 120, and the diameter of the first connection port is larger than that of the second connection port. In this way, on the one hand, the first exhaust pipe 120 and the valve body 111 can be fixed, and the connection stability can be improved, and on the other hand, the flow resistance passing through the valve body can be reduced by the way that the inner diameter is changed from small to smooth, so that the vibration of the first exhaust pipe 120 can be reduced.

In one embodiment, referring to fig. 1, the valve assembly 110 further includes a second reducing member 170, where the first reducing member 160 is provided with a third connecting port and a fourth connecting port, where a wall of the third connecting port is detachably connected to a wall of the second opening 114, and a wall of the fourth connecting port is connected to the second exhaust pipe 130, and a diameter of the third connecting port is larger than a diameter of the fourth connecting port. In this way, on the one hand, the second exhaust pipe 130 and the valve body 111 can be fixed, and the connection stability can be improved, and on the other hand, the flow resistance passing through the valve body can be reduced by the way that the inner diameter becomes larger from small to smooth, which is advantageous in reducing the vibration of the second exhaust pipe 130.

In one embodiment, referring to fig. 1, the engine testing apparatus 100 further includes a base 180, the base 180 includes a supporting member 181, a base plate 182, and a connecting seat 183, the supporting member 181 is movably connected with the base plate 182 through the connecting seat 183, the supporting member 181 is provided with a matching portion, the matching portion is used for being attached to an outer wall of the valve body 111, and the supporting member 181 is used for supporting the valve body 111. In this way, the base 180 serves as a gravity supporting point of the whole device, and can support the valve assembly 110, the first exhaust pipe 120 and the second exhaust pipe 130, so that vibration is avoided, and reliability of experimental results is improved.

Specifically, the connection base 183 includes an adjusting cylinder and a screw (not shown), one end of the adjusting cylinder is rotatably connected to the base plate 182, a threaded portion is provided on an inner wall of the adjusting cylinder, the adjusting cylinder is in threaded engagement with the screw, and one end of the screw is rotatably connected to the supporting member 181. Thus, the screw rod can be lifted in the adjusting cylinder by rotating the adjusting cylinder, so that the valve body 111 is driven to lift, and the height of the exhaust pipe of different types is adapted.

Further, the connecting seat 183 further comprises a self-locking screw, the self-locking screw is movably connected with the adjusting cylinder, and the adjusting cylinder is tightly matched with the screw rod through the self-locking screw. Therefore, the screw rod can be fixed at a certain height through the self-locking screw, so that loosening of the base 180 caused by vibration of the pipeline is avoided, and stability and reliability of height adjustment of the connecting seat 183 are improved.

Referring to fig. 4, in one embodiment, an engine test method, using the engine test apparatus 100 described above, specifically includes the following steps:

s10: according to the model of the engine, the control unit sets the opening parameter of the throttle plate 112 corresponding to each rotating speed point;

s20: connecting the engine with the second exhaust pipe 130, starting the engine and the control unit;

s30: the control unit reads the engine model and invokes the opening parameter of the throttle plate 112 corresponding to the engine model;

s40: detecting whether the exhaust back pressure feedback value of the engine is equal to a target value, stopping the control unit when the exhaust back pressure feedback value is equal to the target value, and feeding back the control unit when the exhaust back pressure feedback value is not equal to the target value, wherein the control unit adjusts the opening of the throttle plate 112;

s50: the engine is stopped.

According to the engine test method, the control unit can call the opening parameters of the throttle plate 112 in the database according to the signals of the engine, so that the opening parameters are executed on the throttle plate 112, the exhaust back pressure of the engine is accurately controlled, the engine test method can be suitable for exhaust back pressure experiments of different engines without replacing an exhaust pipe, the opening of the throttle plate 112 can be automatically adjusted according to the exhaust back pressure feedback value of the engine, the test precision is improved, the working efficiency and the operation convenience of the engine test are improved, and the space occupation and the test cost are reduced.

Specifically, when the engine is running, the control unit reads the current engine model and the rotation speed, and quickly calls the exhaust back pressure data of the engine of the model at the rotation speed and the opening parameter of the throttle plate 112, and then the opening of the throttle plate 112 is adjusted by the butterfly valve actuator. And at the same time, feeding back a real-time regulation result to the control unit through the exhaust back pressure sensor, and stopping the action until the feedback value is the same as the target value. Because the engine is influenced by external factors, the exhaust back pressure of the engine is dynamically changed in fact, and therefore, by adopting high-frequency real-time monitoring, the control unit can always read the exhaust back pressure data in real time and compare the exhaust back pressure data with the target value, high-frequency online dynamic adjustment is realized, and the reliability of test results is improved.

In the whole closed-loop control, the working temperature of the butterfly valve actuator and the valve body 111 is too high to influence the control precision of the whole device, so that the high-temperature tail gas is cooled by the heat dissipation part 118 before entering the first exhaust pipe 120, and then the data of the temperature sensor is read by the control unit to judge, if the temperature is higher than a set value, the control unit will automatically start the blower to cool the butterfly valve actuator and the valve body 111, and if the temperature is smaller than the set value, the blower is always in a standby state.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims (10)

1. An engine test apparatus, comprising:

the valve assembly comprises a valve body and a throttle plate, the valve body is provided with a first opening, a second opening and a valve cavity, the first opening and the second opening are respectively communicated with the valve cavity, the throttle plate is rotatably arranged in the valve cavity, and the throttle plate can rotate in the valve cavity to adjust the opening;

a first exhaust pipe in communication with the first opening; a kind of electronic device with high-pressure air-conditioning system

And one end of the second exhaust pipe is communicated with the second opening, and the other end of the second exhaust pipe is used for communicating with the engine.

2. The engine test apparatus of claim 1, wherein the valve assembly further comprises a butterfly valve actuator, the butterfly valve actuator being coupled to the valve body and the throttle plate being provided with a connecting rod, the connecting rod being drivingly coupled to the butterfly valve actuator, the butterfly valve actuator driving the throttle plate to rotate along an axis of the connecting rod.

3. The engine test apparatus of claim 2, wherein the valve assembly further comprises a heat sink coupled to the valve body, the heat sink configured to dissipate heat from the valve body.

4. The engine test device according to claim 3, wherein the number of the heat dissipation members is two or more, the valve body is provided with a guide cylinder, the guide cylinder is communicated with the valve cavity, the butterfly valve actuator is connected with one end of the guide cylinder, the connecting rod is in guide fit with the inner wall of the guide cylinder, and two or more heat dissipation members are arranged at intervals along the height direction of the guide cylinder.

5. The engine test apparatus of claim 3, further comprising a cooling member disposed in correspondence with the heat sink, the cooling member configured to cool the heat sink.

6. The engine test device of claim 5, further comprising a temperature measurement member electrically connected to the cooling member, the temperature measurement member configured to measure a temperature of the cooling member, and generate a first signal when the temperature of the cooling member is greater than a first predetermined temperature, the cooling member being configured to obtain the first signal and then open the cooling member to cool the cooling member; and when the temperature of the heat dissipation part is smaller than a second preset temperature, a second signal is generated, and the cooling part is closed after acquiring the second signal.

7. The engine test apparatus of claim 3, wherein the valve assembly further comprises a first reducing member having a first connecting port with a port wall detachably connected to the port wall of the first opening and a second connecting port with a port wall connected to the first exhaust pipe, the first connecting port having a diameter greater than a diameter of the second connecting port.

8. The engine test apparatus of claim 7, wherein the valve assembly further comprises a second reducing member, the first reducing member is provided with a third connecting port and a fourth connecting port, a port wall of the third connecting port is detachably connected with a port wall of the second opening, a port wall of the fourth connecting port is connected with the second exhaust pipe, and a diameter of the third connecting port is larger than a diameter of the fourth connecting port.

9. The engine test apparatus of any one of claims 1-8, further comprising a base, the base comprising a support, a base plate, and a connector, the support being movably connected to the base plate by the connector, the support being provided with a mating portion for engaging an outer wall of the valve body, the support being for supporting the valve body.

10. The engine test device according to claim 9, wherein the connection base includes an adjustment cylinder and a screw, one end of the adjustment cylinder is rotatably connected to the base plate, a threaded portion is provided on an inner wall of the adjustment cylinder, the adjustment cylinder is in threaded engagement with the screw, and one end of the screw is rotatably connected to the support member.

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