Engine oil-gas separator oil return test device and its use method

Abstract

This application discloses an engine oil-gas separator oil return test device and its use method, belonging to the field of automotive engine technology. The device comprises: a heater, an oil mist generator, an oil-gas separator, a flow control element, and a pump body, all connected in sequence. The heater contains organic oil; the oil-gas separator is made of a transparent material, and the first connecting pipe between the oil-gas separator and the flow control element is also made of a transparent material. This device tests the oil-gas separator, replacing the engine used in existing technology. This not only provides more targeted testing, but also shortens testing time and reduces testing costs.

Description

Technical Field

[0001] The present application relates to the technical field of automobile engines, and in particular to an engine oil-gas separator oil return test device and a method for using the same. Background Art

[0002] Because the crankshaft and camshaft churn oil, the exhaust gas entering the crankcase can easily contain a large amount of oil. To prevent the engine from burning oil, an oil-gas separator is required to separate the crankcase gas before it is introduced into the combustion chamber, allowing the separated oil to flow back into the cylinder head oil sump. If the oil-gas separator's oil return capacity is poor, oil blowby or burning will inevitably occur, affecting engine performance.

[0003] In the prior art, oil return tests for engine oil-gas separators are primarily conducted on the engine itself. Typically, the engine is placed on a test bench and then operated for a period of time to observe whether the oil-gas separator inside the engine experiences oil blowby or oil burning. However, this test, conducted on the engine itself, requires significant time and expense. Summary of the Invention

[0004] In view of this, the present application provides an engine oil-gas separator oil return test device and a method of use, which can shorten the test time and reduce the test cost.

[0005] Specifically, the following technical solutions are included:

[0006] On the one hand, an embodiment of the present application provides an engine oil-gas separator oil return test device, the device comprising: a heating element, an oil mist generator, an oil-gas separator, a flow control element, and a pump body connected in sequence;

[0007] The heating element contains organic oil;

[0008] The oil-gas separator is made of a transparent material, and the first connecting pipe between the oil-gas separator and the flow control component is made of a transparent material.

[0009] In some embodiments, the flow control element includes a throttle valve and a flow meter;

[0010] One end of the throttle valve is connected to the oil-gas separator, and the other end is connected to the flow meter.

[0011] In some embodiments, the heating element comprises a heater and a container;

[0012] The engine oil is contained in the container, and the heater is located at the lower part of the container.

[0013] In some embodiments, the device further comprises a temperature measuring element;

[0014] The temperature measuring element is located in the container and in contact with the engine oil, and is used to measure the temperature of the engine oil.

[0015] In some embodiments, the device further comprises a load cell;

[0016] The pressure measuring component is located on the first connecting pipeline between the oil-gas separator and the flow control component.

[0017] In some embodiments, the apparatus further comprises a carrying case;

[0018] The oil-gas separator is located in the carrying box, and the carrying box is made of a transparent material.

[0019] In some embodiments, the device further comprises an adjustable stand;

[0020] The adjustable bracket is connected to the carrying box and is located at the lower part of the carrying box.

[0021] In some embodiments, the adjustable bracket includes a first sub-rack, a second sub-rack, and a support seat;

[0022] The carrying box is fixed on the first sub-frame so as to be rotatable along a first direction. The first sub-frame is fixed on the supporting seat. The supporting seat is fixed on the second sub-frame so as to be rotatable along a second direction.

[0023] On the other hand, an embodiment of the present application further provides a method for using an engine oil-gas separator oil return test device, the method being applied to the engine oil-gas separator oil return test device as described in the first aspect above, and comprising:

[0024] turning on the heating element;

[0025] In response to the oil in the heating element being heated to a preset temperature, the pump body is turned on and the flow control element is set to a target value;

[0026] In response to the working time of the pump body reaching a preset time, the pump body and the heating element are turned off.

[0027] In some embodiments, the preset temperature is 140-150° C., and the preset time is 5 minutes.

[0028] The engine oil-gas separator oil return test device provided in the embodiment of the present application is configured such that, during the test, the heating element is turned on. When the engine oil in the heating element is heated to a preset temperature, the pump body is turned on and the flow control element is set to the target value, and the device is evacuated. By heating the engine oil in the heating element, the engine oil can be evaporated and enter the oil mist generator. After mixing with hot air in the oil mist generator, the oil mist is formed, and then the oil mist enters the oil-gas separator for oil-gas separation. After a preset time, the pump body and the heating element are turned off. By observing whether there is continuous liquid flow in the transparent oil-gas separator and the transparent first connecting pipe between the oil-gas separator and the flow control element, it is confirmed whether oil leakage occurs in the oil-gas separator, and then the oil return capacity of the oil-gas separator is determined. The test object of this device is the oil-gas separator, which replaces the engine in the prior art. It is not only more targeted, but also can shorten the test time and reduce the test cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0030] Figure 1 A schematic structural diagram of an engine oil-gas separator oil return test device provided in an embodiment of the present application;

[0031] Figure 2 A schematic structural diagram of an adjustable bracket in an engine oil-gas separator oil return test device provided in an embodiment of the present application;

[0032] Figure 3 A flow chart of a method for using an engine oil-gas separator oil return test device provided in an embodiment of the present application.

[0033] The reference numerals in the figures represent respectively:

[0034] 1-heating element, 11-heater, 12-container,

[0035] 2- Oil mist generator,

[0036] 3-Oil and gas separator,

[0037] 4-flow control part, 41-throttle valve, 42-flow meter,

[0038] 5- Pump body,

[0039] 6- First connecting pipeline,

[0040] 7- Temperature measuring piece,

[0041] 8-pressure measuring piece,

[0042] 9-carrying box,

[0043] 10-adjustable bracket, 101-first sub-rack, 102-second sub-rack, 103-support base.

[0044] The above drawings illustrate specific embodiments of the present application, which will be described in more detail below. These drawings and the textual description are not intended to limit the scope of the present application in any way, but rather to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION

[0045] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

[0046] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0047] Unless otherwise defined, all technical terms used in the embodiments of the present application have the same meanings as commonly understood by those skilled in the art.

[0048] When an internal combustion engine is operating, the combustible mixture and exhaust gases in the combustion chamber can enter the crankcase through the gap between the piston and cylinder wall and the gap between the piston rings. If these exhaust gases are not promptly discharged, the engine crankcase pressure will increase, ultimately causing oil leaks and even engine damage. The exhaust gases from the combustion chamber contain water, oil, gasoline, and other substances. If discharged directly into the atmosphere, they would cause environmental pollution. Therefore, a ventilation line is required to introduce the gases in the crankcase into the combustion chamber for further combustion.

[0049] Due to the stirring of oil by the crankshaft, camshaft, etc., a large amount of engine oil is contained in the exhaust gas. In order to prevent the engine from burning oil, oil and gas need to be separated before being introduced into the combustion chamber, and the separated oil is returned to the cylinder head oil pool.

[0050] Currently, when designing an oil-gas separator, theoretical evaluation of the oil return valve's oil return characteristics is often inadequate. Instead, the oil-gas separator's oil return capability is typically verified through engine bench testing. This involves placing the engine on a bench, running it for a period of time, and observing whether the oil-gas separator inside the engine experiences oil blowby or oil burning. However, this test is conducted on the engine itself, making the test time lengthy and costly. Furthermore, due to cost constraints, the engine tilt test bench often lacks a dynamometer, making it impossible to apply a load. This prevents effective verification of the oil-gas separator's oil return capability under high load conditions.

[0051] In order to solve the problems existing in the prior art, an embodiment of the present application provides an engine oil-gas separator oil return test device.

[0052] See also Figure 1 The device includes: a heating element 1, an oil mist generator 2, an oil-gas separator 3, a flow control element 4 and a pump body 5 which are connected in sequence.

[0053] The heating element 1 contains engine oil so that the engine oil can be heated by the heating element 1 .

[0054] The oil-gas separator 3 is made of a transparent material, and the first connecting pipe 6 between the oil-gas separator 3 and the flow control component 4 is made of a transparent material. Due to the transparency of the transparent material, it is convenient for observers to observe the oil-gas separator 3 and the oil and gas conditions in the first connecting pipe 6 between the oil-gas separator 3 and the flow control component 4.

[0055] It can be understood that the heating element 1, the oil mist generator 2, the oil-gas separator 3, the flow control element 4 and the pump body 5 are all connected and communicated with each other through pipelines.

[0056] The working principle of the engine oil-gas separator oil return test device provided in the embodiment of the present application is:

[0057] During the test, the heating element 1 is turned on. When the oil in the heating element 1 is heated to a preset temperature, the pump body 5 is turned on and the flow control element 4 is set to a target value to evacuate the device.

[0058] By heating the engine oil in the heating element 1, the engine oil can be evaporated and enter the oil mist generator 2, where it is mixed with hot air to form oil mist, which then enters the oil-gas separator 3 for oil-gas separation.

[0059] After the preset time, the pump body 5 and the heating element 1 are turned off, and whether there is continuous liquid flow in the transparent oil-gas separator 3 and the transparent first connecting pipe 6 between the oil-gas separator 3 and the flow control element 4 is observed to confirm whether oil leakage occurs in the oil-gas separator 3, and then determine the oil return capacity of the oil-gas separator 3.

[0060] Therefore, the engine oil-gas separator return oil test device provided in the embodiment of the present application, since the test object is the oil-gas separator 3, which replaces the engine in the prior art, is not only more targeted, but also can shorten the test time and reduce the test cost.

[0061] The structure of the engine oil-gas separator oil return test device provided in the embodiment of the present application is further described below:

[0062] The heating element 1 is used to heat the engine oil in the engine oil-gas separator return oil test device provided in the embodiment of the present application, so that the engine oil can be heated and atomized.

[0063] In some embodiments, see Figure 1 The heating element 1 includes a heater 11 and a container 12.

[0064] The container 12 contains the organic oil, and the heater 11 is located at the lower part of the container 12 .

[0065] When the heating element 1 is working, the heater 11 is started, so that the heater 11 heats the engine oil in the container 12 and the engine oil can be heated and atomized.

[0066] In some embodiments, the container 12 may be a transparent cup.

[0067] In some embodiments, the transparent cup may have scale lines, so that an operator can determine the amount of engine oil contained in the cup by observing the scale lines.

[0068] In some embodiments, the heater 11 may be an electric heater that converts electrical energy into thermal energy to achieve a heating function.

[0069] It is understandable that the heater 11 can also be other types of heaters, such as infrared heaters, resistance heaters, etc., as long as it can achieve the heating function, and is not specifically limited in the embodiments of the present application.

[0070] Based on the above structure of the heating element 1, in some embodiments, see Figure 1 The engine oil-gas separator oil return test device provided in the embodiment of the present application also includes a temperature measuring component 7.

[0071] The temperature measuring element 7 is located in the container 12 and is in contact with the engine oil, and is used to measure the temperature of the engine oil.

[0072] In some embodiments, the temperature measuring element 7 may be a thermometer, and the temperature measuring range of the thermometer may be 0-200°C.

[0073] In some embodiments, the temperature measuring element 7 has a display screen, and the operator can directly determine the temperature of the engine oil measured by the temperature measuring element 7 through the display screen.

[0074] In some embodiments, the measurement accuracy of the temperature measuring element 7 can be 1° C. to ensure the heating accuracy of the engine oil so that the heated engine oil can be within a preset temperature range.

[0075] The oil mist generator 2 is used to simulate the exhaust gas generated by the engine crankcase.

[0076] In some embodiments, the atomization condition of the oil mist generator 2 can be controlled by measuring the oil content and particle distribution of the oil mist in the engine crankcase.

[0077] It is understandable that, after the engine oil evaporates and enters the oil mist generator 2 , it can be mixed with the hot air in the oil mist generator 2 to form oil mist.

[0078] The oil-gas separator 3 is used for oil-gas separation and is the test object of the engine oil-gas separator oil return test device provided in the embodiment of the present application.

[0079] In some embodiments, the oil-gas separator 3 may be an oil-gas separator integrated with a diaphragm umbrella valve.

[0080] In some embodiments, the oil-gas separator 3 has a fine separation structure. After the oil and gas pass through the fine separation structure, the separated oil droplets fall into the oil return hole column.

[0081] In some embodiments, the oil-gas separator can be formed by 3D rapid printing.

[0082] The flow control element 4 is used to control the flow of oil mist entering the oil-gas separator 3 .

[0083] In some embodiments, see Figure 1 The flow control component 4 includes a throttle valve 41 and a flow meter 42.

[0084] One end of the throttle valve 41 is connected to the oil-gas separator 3 , and the other end is connected to the flow meter 42 .

[0085] By controlling the opening of the throttle valve 41, the flow rate of oil mist entering the oil-gas separator 3 can be controlled. When the throttle valve 41 is opened widely, the throttle valve 41 allows more oil mist to pass through, resulting in a larger oil mist flow rate and a larger flow rate value measured by the flow meter 42. When the throttle valve 41 is opened narrowly, the throttle valve 41 allows less oil mist to pass through, resulting in a smaller oil mist flow rate and a smaller flow rate value measured by the flow meter 42.

[0086] It is understandable that the opening of the throttle valve 41 can be adjusted according to actual needs.

[0087] In some embodiments, the throttle valve 41 may be a manual regulating valve, and the valve opening can be adjusted by adjusting the valve stem located on the valve body.

[0088] The first connecting line 6 is used to connect the oil-gas separator 3 and the flow control element 4. By observing whether there is continuous liquid flow in the first connecting line 6 during the test, it is confirmed whether oil leakage occurs in the oil-gas separator, and then the oil return capacity of the oil-gas separator 3 is determined.

[0089] In some embodiments, the first connecting pipe 6 is a transparent bellows.

[0090] In order to monitor the pressure in the first connecting pipe 6, in some embodiments, see Figure 1 The engine oil-gas separator oil return test device provided in the embodiment of the present application also includes a pressure measuring piece 8.

[0091] The pressure measuring component 8 is located on the first connecting pipeline 6 between the oil-gas separator 3 and the flow control component 4 .

[0092] In some embodiments, the pressure measuring member 8 may be a pressure gauge, and the measured pressure value may be directly obtained through the pointer indication on the pressure gauge.

[0093] In some embodiments, the first connecting pipeline 6 has a tee pipe, wherein the first end of the tee pipe is connected to the oil-gas separator 3 , the second end is connected to the throttle valve 41 , and the third end is connected to the pressure measuring piece 8 .

[0094] The pump body 5 is used for suction, so that the oil mist generated by the oil mist generator 2 can enter the oil mist generator 2 under the action of the pump body 5 .

[0095] In some embodiments, the pump body 5 may be a vacuum pump.

[0096] On the basis of the above structure, the engine oil-gas separator oil return test device provided in the embodiment of the present application also includes the following structure.

[0097] In some embodiments, see Figure 1The engine oil-gas separator oil return test device provided in the embodiment of the present application also includes a carrying box 9.

[0098] The oil-gas separator 3 is located in the carrying box 9 , and the carrying box 9 is made of a transparent material.

[0099] A carrying box 9 is provided to stabilize the external pressure of the oil-gas separator 3 and to accommodate the oil separated from the oil-gas separator 3. Since the carrying box 9 is made of a transparent material, the operator can more easily observe the oil-gas separation occurring in the carrying box 9, thereby facilitating real-time understanding of the progress of the test.

[0100] It's understood that after the oil mist generator 2 generates oil mist, the oil mist flowing out of the generator 2 can first enter the carrier tank 9 through the hose. Because the fine separation structure within the oil mist generator 2 acts as a throttle, a pressure differential exists between the oil return hole within the oil-gas separator and the carrier tank 9. Therefore, the oil in the oil return column must overcome the back pressure of the valve disc. As the oil level in the oil return column rises, the oil return valve disc opens, allowing the oil to return to the carrier tank 9.

[0101] In some embodiments, the oil-gas separator 3 is fixedly connected in the carrying box 9 .

[0102] In some embodiments, see Figure 1 The engine oil-gas separator oil return test device provided in the embodiment of the present application also includes an adjustable bracket 10.

[0103] The adjustable bracket 10 is connected to the carrying box 9 and is located at the lower part of the carrying box 9 .

[0104] Since the oil-gas separator 3 is arranged in the carrying box 9, and the carrying box 9 is connected to the adjustable bracket 10, the mixing angle tilt adjustment of the oil-gas separator 3 in the front and back and left and right directions can be achieved by setting the adjustable bracket 10 to meet the requirements of various extreme road conditions.

[0105] In some embodiments, see Figure 2 The adjustable bracket 10 includes a first sub-rack 101, a second sub-rack 102 and a support base 103. In other words, the adjustable bracket 10 is composed of the first sub-rack 101, the second sub-rack 102 and the support base 103.

[0106] The carrying box 9 is fixed on the first sub-frame 101 so as to be rotatable along a first direction. The first sub-frame 101 is fixed on the support base 103. The support base 103 is fixed on the second sub-frame 102 so as to be rotatable along a second direction.

[0107] It should be noted that the first direction can be the left-right direction or the front-back direction, and the second direction can be the front-back direction or the left-right direction. When the first direction is the left-right direction, the second direction is the front-back direction; when the first direction is the front-back direction, the second direction is the left-right direction. The specific direction can be selectively set according to actual conditions and is not specifically limited in the embodiments of this application.

[0108] In some embodiments, the first subframe 101 includes a first support base, a second support base, and a first connecting shaft. One end of the first connecting shaft is connected to the first support base, and the other end is connected to the second support base. The first and second support bases not only secure the first connecting shaft but also allow the first connecting shaft to rotate angularly. In the embodiment of the present application, the carrying box 9 has a fixed portion that is connected to the first connecting shaft, so that when the first connecting shaft rotates, it can simultaneously drive the fixed portion to rotate, and then drive the carrying box 9 and the oil-gas separator 3 located therein to rotate.

[0109] In some embodiments, the support base 103 is a plate, and the first support base and the second support base are fixedly connected to the same side of the plate and are arranged opposite to each other.

[0110] In some embodiments, the second sub-frame 102 includes a third support base, a fourth support base, and a second connecting shaft. One end of the second connecting shaft is connected to the third support base, and the other end is connected to the fourth support base. The third and fourth support bases are used not only to fix the second connecting shaft, but also to allow the second connecting shaft to rotate at an angle. In the embodiment of the present application, the lower portion of the support base 103 has relatively arranged bearing holes, and the second connecting shaft is suitable for passing through the relatively arranged bearing holes. When the second connecting shaft rotates, it can drive the support base 103 to rotate, and then drive the first sub-frame 101 and the carrying box 9 located on the support base 103, as well as the oil-gas separator 3 located in the carrying box 9, to rotate.

[0111] In some embodiments, the adjustable angles of the first sub-rack 101 and the second sub-rack 102 are both -25° to 25°.

[0112] During testing, the adjustable bracket 10 can be adjusted based on the engine's layout. Generally, based on the engine's layout on the vehicle and the vehicle's extreme tilt angles during climbing and cornering, the lowest angle of the oil-gas separator outlet is selected, and a simulation test is conducted based on the maximum piston leakage. The angles of the first sub-frame 101 or the second sub-frame 102 can be adjusted based on the vehicle's extreme layout requirements. Repeat the test, recording the oil-gas separator blowby test results at different angles, to determine the comprehensive oil return capacity of the oil-gas separator 3.

[0113] The engine oil-gas separator return oil test device provided in the embodiment of the present application can be used for structural selection in the early stage of the project and dynamic total optimization matching analysis of the replacement project. Compared with the bench tilt test, it has significant advantages such as speed, efficiency and reliability.

[0114] On the other hand, an embodiment of the present application further provides a method for using an engine oil-gas separator oil return test device, which is applied to the engine oil-gas separator oil return test device involved in the above embodiments of the present application.

[0115] Figure 3 This is a flow chart of a method for using an engine oil-gas separator oil return test device provided in an embodiment of the present application. Figure 3 The method for using the engine oil-gas separator oil return test device includes the following steps:

[0116] Step 301: Turn on the heating element 1.

[0117] Step 302 : In response to the engine oil in the heating element 1 being heated to a preset temperature, the pump body 5 is turned on and the flow control element 4 is set to a target value.

[0118] Step 303 : in response to the working time of the pump body 5 reaching a preset time, turning off the pump body 5 and the heating element 1 .

[0119] The method for using the engine oil-gas separator oil return test device provided in the embodiment of the present application is to turn on the heating element 1; when the engine oil in the heating element 1 is heated to a preset temperature, turn on the pump body 5 and set the flow control element 4 to a target value to evacuate the device; by heating the engine oil therein by the heating element 1, the engine oil can be evaporated and enter the oil mist generator 2, and then the oil mist is mixed with hot air in the oil mist generator 2 to form oil mist, and then the oil mist will enter the oil-gas separator 3 for oil and gas separation; after the preset time, turn off the pump body 5 and the heating element 1, and observe whether there is continuous liquid flow in the transparent oil-gas separator 3 and the transparent first connecting pipe 6 between the oil-gas separator 3 and the flow control element 4 to confirm whether oil leakage occurs in the oil-gas separator 3, and then determine the oil return capacity of the oil-gas separator 3.

[0120] Since the test object of this method is the oil-gas separator 3, which replaces the engine in the prior art, it is not only more targeted, but also can shorten the test time and reduce the test cost.

[0121] In some embodiments, the preset temperature is 140-150° C., that is, when the engine oil is heated to 140-150° C., the pump body 5 can be turned on to pump air from the device.

[0122] In some embodiments, the preset time is 5 minutes, that is, when the air extraction time is not less than 5 minutes, it can be determined whether oil leakage occurs in the oil-gas separator 3 .

[0123] It should be noted that the terms "several" and "at least one" in this document refer to one or more, while "multiple" and "at least two" refer to two or more. "And / or" describes the relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can mean: A exists alone, A and B exist simultaneously, or B exists alone. The character " / " generally indicates an "or" relationship between the associated objects.

[0124] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to internal communication between two components or the interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0125] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0126] In this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0127] In the description of this specification, reference to the terms "certain embodiments", "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application.

[0128] The above description is merely an embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the principles of the present application shall be included in the scope of protection of the present application.

Claims

1. An engine oil-gas separator oil return test device, characterized in that: The device comprises: a heating element (1), an oil mist generator (2), an oil-gas separator (3), a flow control element (4) and a pump body (5) which are connected in sequence; The heating element (1) contains organic oil; The oil-gas separator (3) is made of a transparent material, and the first connecting pipe (6) between the oil-gas separator (3) and the flow control element (4) is also made of a transparent material; The pump body (5) is a vacuum pump, and the pump body (5) is used for suction, so that the oil mist generated by the oil mist generator (2) enters the oil mist generator (2) under the action of the pump body; the device also includes a carrying box (9) and an adjustable bracket (10), the oil-gas separator (3) is located in the carrying box (9), the carrying box (9) is made of a transparent material, the adjustable bracket (10) is connected to the carrying box (9), and is located at the lower part of the carrying box (9); the adjustable bracket (10) includes a first sub-frame (101), a second sub-frame (102) and a support seat (103); the carrying box (9) can be rotatably fixed on the first sub-frame (101) along a first direction, the first sub-frame (101) is fixed on the support seat (103), and the support seat (103) can be rotatably fixed along a first direction The invention relates to a method for rotating the first sub-frame (101) and the second sub-frame (102) in two directions; the first sub-frame (101) comprises a first supporting seat, a second supporting seat and a first connecting shaft, one end of the first connecting shaft is connected to the first supporting seat, and the other end is connected to the second supporting seat, the first supporting seat and the second supporting seat are used to fix the first connecting shaft and allow the first connecting shaft to rotate at an angle; the second sub-frame (102) comprises a third supporting seat, a fourth supporting seat and a second connecting shaft, one end of the second connecting shaft is connected to the third supporting seat, and the other end is connected to the fourth supporting seat, the third supporting seat and the fourth supporting seat are used to fix the second connecting shaft and allow the second connecting shaft to rotate at an angle, wherein the adjustable angles of the first sub-frame (101) and the second sub-frame (102) are both -25° to 25°.

2. The engine oil-gas separator oil return test device according to claim 1, characterized in that: The flow control element (4) includes a throttle valve (41) and a flow meter (42); One end of the throttle valve (41) is connected to the oil-gas separator (3), and the other end is connected to the flow meter (42).

3. The engine oil-gas separator oil return test device according to claim 1, characterized in that: The heating element (1) comprises a heater (11) and a container (12); The container (12) contains the engine oil, and the heater (11) is located at the lower part of the container (12).

4. The engine oil-gas separator oil return test device according to claim 3, characterized in that: The device further comprises a temperature measuring element (7); The temperature measuring element (7) is located in the container (12) and is in contact with the engine oil, and is used to measure the temperature of the engine oil.

5. The engine oil-gas separator oil return test device according to claim 1, characterized in that: The device also includes a pressure measuring piece (8); The pressure measuring element (8) is located on the first connecting pipeline (6) between the oil-gas separator (3) and the flow control element (4).

6. A method for using an engine oil-gas separator oil return test device, characterized in that: The method is applied to the engine oil-gas separator oil return test device according to any one of claims 1 to 5, comprising: Turning on the heating element (1); In response to the oil in the heating element (1) being heated to a preset temperature, the pump body (5) is turned on and the flow control element (4) is set to a target value; In response to the working time of the pump body (5) reaching a preset time, the pump body (5) and the heating element (1) are turned off.

7. The method for using the engine oil-gas separator oil return test device according to claim 6, characterized in that: The preset temperature is 140-150° C., and the preset time is 5 minutes.

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