Oil-gas separation device for engine plateau intake and exhaust altitude simulation bench test

Abstract

The utility model discloses an oil-gas separation device for an engine plateau intake and exhaust altitude simulation bench test, which is arranged between a crankcase ventilation pipeline and an altitude simulation exhaust pipeline, and comprises a support assembly and an oil-gas separator, the support assembly is used for supporting the oil-gas separator, the height of the support assembly is adjustable, and the oil-gas separator is arranged on the support assembly. The height of the oil-gas separator is adjusted to meet test conditions. An oil-gas separation filter element is arranged in the oil-gas separator, oil-gas inlets and an oil-gas outlet are formed in the oil-gas separator, the oil-gas inlets are connected with the crankcase ventilation pipelines, the number of the oil-gas inlets is two, the two oil-gas inlets are respectively connected with the two crankcase ventilation pipelines which are connected in parallel, and the oil-gas outlet is connected with the altitude simulation exhaust pipeline. The oil-gas separator is used for carrying out oil-gas separation, engine oil is collected and then added to the engine again, and the problems that engine oil mist is discharged along with a crankcase ventilation pipeline, engine oil of the engine is consumed abnormally, and the atmosphere is polluted are effectively solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of engine simulation test, concretely relates to an oil gas separation device for engine plateau intake and exhaust altitude simulation bench test. BACKGROUND

[0002] Engine performance is a key factor for evaluating the quality of a vehicle, therefore, it is extremely important to verify whether the engine performance is good or not. The engine intake and exhaust altitude simulation test bench, as a test tool for quickly verifying the performance indicators of the engine under different altitude conditions, has played a very important role in the development and verification of new engine products. The engine intake and exhaust altitude simulation test needs to simulate a safe and reliable environment, which involves many aspects. The engine intake and exhaust altitude simulation test bench is a new verification device in the automobile engine research and production industry. The purpose of using the engine intake and exhaust altitude simulation test bench is to simulate the running conditions of the whole vehicle under different altitude environmental conditions, and to realize the development test operation of the performance, reliability and other aspects of the engine product. Whether the engine intake and exhaust altitude simulation equipment, as an auxiliary equipment of the test bench, is reasonably applied to the test bench plays a crucial role in the effectiveness of the engine test data.

[0003] The engine intake and exhaust pipeline is respectively connected and installed with the altitude simulation intake and exhaust pipeline of the test room. In order to ensure the accuracy of the test data and protect the engine supercharger, the engine crankcase needs to be connected with the intake and exhaust altitude simulation system through two parallel engine crankcase ventilation pipelines, so as to ensure that the crankcase pressure is consistent with the engine intake and exhaust pipeline pressure, and prevent the engine oil from entering the intake pipeline due to the crankcase pressure being greater than the pressure at the end of the supercharger compressor, which affects the test results and / or causes damage to the engine.

[0004] After the two parallel crankcase ventilation pipelines are connected to the altitude simulation exhaust pipeline, the engine oil mist will be finally discharged into the atmosphere through the pipeline, resulting in abnormal consumption of the engine oil and pollution of the atmosphere. Therefore, the oil mist in the pipeline needs to be treated. UTILITY MODEL CONTENTS

[0005] In view of the above problems, the utility model provides an oil gas separation device for engine plateau intake and exhaust altitude simulation bench test, which solves the problems of abnormal consumption of engine oil and pollution of the atmosphere caused by directly connecting the crankcase ventilation pipeline to the intake and exhaust altitude simulation system under the condition of ensuring stable crankcase pressure.

[0006] Specifically, the utility model is implemented as follows:

[0007] An oil gas separation device for engine plateau intake and exhaust altitude simulation bench test is arranged between the crankcase ventilation pipeline and the altitude simulation exhaust pipeline, which comprises:

[0008] a support assembly configured to be height-adjustable;

[0009] an oil-gas separator provided on the support assembly, and an oil-gas separation filter element is arranged in the oil-gas separator; the oil-gas separator is provided with an oil-gas inlet and an oil-gas outlet, the oil-gas inlet is connected with a crankcase ventilation duct, and the oil-gas inlet is provided with two oil-gas inlets connected with two parallel crankcase ventilation ducts, respectively; the oil-gas outlet is connected with an altitude simulation exhaust pipeline.

[0010] Further, the oil-gas separator comprises:

[0011] a closed shell provided on the support assembly, and a pressure stabilizing cavity is formed in the closed shell;

[0012] a cover plate detachably arranged on the top of the closed shell, and the oil-gas inlet and the oil-gas outlet are arranged on the cover plate;

[0013] a liquid level display tube arranged on the closed shell and used for displaying the oil liquid level collected in the closed shell.

[0014] Further, the lower part of the closed shell is provided with a drain port, and a drain valve is arranged on the drain port.

[0015] Further, the oil-gas separation filter element is detachably arranged at the oil-gas outlet.

[0016] Further, the liquid level display tube is arranged outside the closed shell and is integrally made of transparent material; the upper end and the lower end of the liquid level display tube are both in communication with the internal space of the closed shell.

[0017] Further, the drain valve is connected to an engine oil pan through a drain pipeline.

[0018] Further, the support assembly comprises:

[0019] a support base;

[0020] a support frame arranged on the support base;

[0021] a support rod arranged at the bottom of the oil-gas separator, and the support rod is configured to move axially along the support frame to adjust the height of the oil-gas separator.

[0022] Further, the support frame is in a whole "U" shape, a plurality of limiting holes are arranged on the two sides of the support frame in the vertical direction, a plurality of positioning holes are arranged on the support rod, and bolts pass through the corresponding limiting holes and the positioning holes to fix the oil-gas separator.

[0023] Working principle of the utility model:

[0024] In use, the two oil-gas inlets at the top of the oil-gas separator are connected with two crankcase ventilation pipes on the engine respectively, the oil-gas outlet is connected with the altitude simulation exhaust pipe, then the support assembly is adjusted, and the oil-gas separator is adjusted to a position with an overall height higher than the top of the engine. During the test, the oil mist enters the oil-gas separator through the crankcase ventilation pipe of the engine, then moves to the oil-gas outlet, is separated from the oil-gas when passing through the oil-gas separation filter element, the gas is normally discharged from the altitude simulation exhaust pipe, and the oil is separated and collected in the closed shell. The oil liquid level is observed through the liquid level display pipe, and the oil can be discharged and added to the engine again when the liquid level is too high.

[0025] In addition, the stable pressure cavity is formed in the closed shell of the oil-gas separator, the stable pressure cavity is used as a volume buffer, and the instantaneous pressure change in the pipeline is suppressed through the internal space, so that the crankcase pressure fluctuation can be reduced.

[0026] Compared with the prior art, the oil-gas separation device for the engine plateau intake and exhaust altitude simulation bench test has the following beneficial effects:

[0027] (1) The oil-gas separation device for the engine plateau intake and exhaust altitude simulation bench test provided by the utility model separates oil and gas by using an oil-gas separator, collects the oil, and adds the oil to the engine again, so that the problem of abnormal consumption of the oil of the engine caused by the oil mist of the oil being discharged through the crankcase ventilation pipe and the problem of air pollution are effectively solved.

[0028] (2) The stable pressure cavity is formed in the oil-gas separator, the crankcase pressure fluctuation can be effectively reduced through the stable pressure cavity, and the crankcase pressure is consistent with the pressure of the intake and exhaust pipeline of the engine.

[0029] (3) The height of the oil-gas separator can be adjusted through the support assembly, the height position of the oil-gas separator can be adjusted according to the actual situation when different engines are tested, and the adaptability of the whole is improved. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 It is an engine plateau intake and exhaust altitude simulation test system schematic diagram in embodiment 1;

[0031] Figure 2 It is an oil-gas separation device for engine plateau intake and exhaust altitude simulation bench test in use state schematic diagram in embodiment 1;

[0032] Figure 3 It is a structure schematic diagram of the oil-gas separation device for engine plateau intake and exhaust altitude simulation bench test in embodiment 1;

[0033] Figure 4 It is an exploded view of the oil-gas separation device for engine plateau intake and exhaust altitude simulation bench test in embodiment 1;

[0034] Figure 5 This is a cross-sectional view of the oil-gas separation device used in the high-altitude intake and exhaust simulation bench test of the engine in Example 1.

[0035] Figure label:

[0036] 1-Altitude simulation air intake device; 2-Engine; 3-Altitude simulation air exhaust device; 4-Engine dynamometer; 51-Altitude simulation air intake pipe; 52-Crankcase ventilation pipe; 53-Altitude simulation exhaust pipe; 54-Drain pipe; 6-Oil-gas separator; 61-Sealed housing; 62-Cover plate; 621-Quick release clamp; 63-Oil-gas inlet; 64-Oil-gas outlet; 65-Level display tube; 66-Drain valve; 67-Oil-gas separator filter element; 7-Support assembly; 71-Support base; 72-Support frame; 721-Limit hole; 73-Support rod; 731-Positioning hole; 74-Bolt. Detailed Implementation

[0037] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0038] Example 1

[0039] like Figure 1 As shown, this embodiment provides an engine high-altitude intake and exhaust altitude simulation test system, including: an altitude simulation intake device 1, an altitude simulation exhaust device 3, and an engine dynamometer 4. An engine 2 is mounted on a test bench and connected to the engine dynamometer 4. The altitude simulation intake device 1 is connected to the engine 2 via an altitude simulation intake pipe 51, and the altitude simulation exhaust device 3 is connected to the engine 2 via an altitude simulation exhaust pipe 53. The engine's crankcase is connected to the altitude simulation exhaust pipe 53 via two parallel crankcase ventilation pipes 52. The system simulates altitude by controlling the air pressure through the altitude simulation intake device 1.

[0040] like Figure 2 As shown, an oil-gas separator is installed between the crankcase ventilation duct 52 and the altitude simulation exhaust pipe 53 of engine 2. This separator separates the oil and gas in the crankcase ventilation duct 52, removing the engine oil. This solves the problem of abnormal oil consumption in engine 2 caused by oil mist being discharged through the crankcase ventilation duct 52, while also preventing oil mist from polluting the atmosphere. Specifically, as... Figure 3 As shown, the oil-gas separation device includes an oil-gas separator 6 and a support assembly 7. The support assembly 7 is used to support the oil-gas separator 6 as a whole and adjusts the height of the oil-gas separator 6 so that the height of the oil-gas separator 6 is higher than that of the engine 2 during the test.

[0041] like Figures 3-4As shown, the support assembly 7 comprises a support base 71, a support frame 72 and a support rod 73, the support base 71 is fixed on the test bench bottom plate by bolts, the support frame 72 is fixed on the support base 71 and has a whole "U" shape, the support frame 72 is made of C-shaped steel, and a plurality of limiting holes 721 are arranged on the two sides of the support frame 72 in the vertical direction, the support rod 73 is arranged at the bottom of the oil-gas separator 6 and is inserted into the support frame 72, and a plurality of positioning holes 731 are arranged on the support rod 73 in the vertical direction, bolts 74 pass through the limiting holes 721 and the positioning holes 731 to fix the oil-gas separator 6, and the bolts 74 pass through different positioning holes 731 and limiting holes 721 to adjust the height of the oil-gas separator 6.

[0042] As shown in the figure, Figures 3-5 As shown, the oil-gas separator 6 comprises a sealed shell 61 and a cover plate 62, both of which are made of 304 stainless steel, the cover plate 62 is installed on the top of the sealed shell 61 through a quick-release clamp 621, two oil-gas inlets 63 and an oil-gas outlet 64 are arranged on the cover plate 62, the two oil-gas inlets 63 are connected with the two crankcase ventilation pipes 52 respectively, the oil-gas outlet 64 is connected with the altitude simulation exhaust pipeline 53, the oil-gas from the crankcase ventilation pipes 52 enters the oil-gas separator 6 through the oil-gas inlets 63 for oil-gas separation, and then enters the altitude simulation exhaust pipeline 53 through the oil-gas outlet 64, and finally is discharged into the air through the altitude simulation exhaust equipment 3. When the cover plate 62 is closed, a stable pressure cavity is formed in the sealed shell 61, the stable pressure cavity serves as a volumetric buffer and smoothes the instantaneous pressure change in the pipeline through the internal space, thereby reducing the crankcase pressure fluctuation.

[0043] The inlet section of the oil-gas outlet 64 is detachably connected with an oil-gas separation filter element 67, the oil-gas separation filter element 67 is connected in a manner such as thread, flange, etc., and the specific connection is not limited herein. The oil-gas from the crankcase ventilation pipes 52 enters the stable pressure cavity through the oil-gas inlets 63, and then flows to the oil-gas separation filter element 67, the oil mist in the gas is filtered by the oil-gas separation filter element 67 and is collected in the sealed shell 61, and the gas is discharged through the oil-gas outlet 64. It should be noted that the present application does not involve improvement of the oil-gas separation filter element 67.

[0044] A liquid level display tube 65 made of transparent material is arranged on the side wall of the sealed shell 61, the upper and lower ends of the liquid level display tube 65 are connected to the upper and lower parts of the sealed shell 61 respectively, and the liquid level display tube 65 is in communication with the inside of the sealed shell 61, and the oil level height collected in the sealed shell 61 can be directly displayed through the liquid level display tube 65, so that the oil in the sealed shell 61 can be timely discharged.

[0045] The lower part of the closed shell 61 is provided with an oil drain port, which is controlled to open and close by an oil drain valve 66.

[0046] The above describes the utility model by using specific examples, which is only used to help understand the utility model and does not limit the utility model. For the skilled in the art to which the utility model belongs, according to the idea of the utility model, a number of simple deductions, deformations or substitutions can be made.

Claims

1. An oil-gas separation device for use in a high-altitude intake and exhaust simulation bench test of an engine, characterized by, A support assembly (7) is arranged between the crankcase ventilation pipe (52) and the altitude simulation exhaust pipe (53), and comprises: The support assembly (7) is arranged between the crankcase ventilation pipe (52) and the altitude simulation exhaust pipe (53), and comprises: An oil-gas separator (6) is arranged on the support assembly (7) and has an oil-gas separation filter element (67) arranged therein; the oil-gas separator (6) is provided with an oil-gas inlet (63) and an oil-gas outlet (64), the oil-gas inlet (63) is connected with the crankcase ventilation pipe (52), and the oil-gas outlet (64) is connected with the altitude simulation exhaust pipe (53).

2. The oil and gas separation device for engine high altitude intake and exhaust simulation bench test of claim 1, wherein, The oil-gas separator (6) comprises: A closed housing (61) is arranged on the support assembly (7) and has a pressure stabilizing cavity formed therein; A cover plate (62) is detachably arranged on the top of the closed housing (61), and the oil-gas inlet (63) and the oil-gas outlet (64) are arranged on the cover plate (62); A liquid level display tube (65) is arranged on the closed housing (61) and used for displaying the liquid level of the collected engine oil in the closed housing (61).

3. The oil and gas separation device for engine high altitude intake and exhaust simulation bench test of claim 2, wherein, The lower part of the closed housing (61) is provided with a drain port, and the drain port is provided with a drain valve (66).

4. The oil-gas separation device for engine high altitude intake and exhaust simulation bench test according to claim 2 or 3, characterized in that, The oil-gas separation filter element (67) is detachably arranged at the oil-gas outlet (64).

5. The oil and gas separation device for engine high altitude intake and exhaust simulation bench test of claim 3, wherein, The liquid level display tube (65) is arranged on the outside of the closed housing (61) and is made of transparent material; the upper and lower ends of the liquid level display tube (65) are in communication with the internal space of the closed housing (61).

6. The oil and gas separation device for engine high altitude intake and exhaust simulation bench test of claim 3, wherein The drain valve (66) is connected to the oil pan of the engine (2) through a drain pipeline (54).

7. The oil and gas separation device for engine high altitude intake and exhaust simulation bench test of claim 1, wherein, The support assembly (7) comprises: A support base (71); A support frame (72) is arranged on the support base (71); The oil-gas separator (6) is provided with a support rod (73) at the bottom, and the support rod (73) is arranged to move axially along the support frame (72) to adjust the height of the oil-gas separator (6).

8. The oil and gas separation device for engine high altitude intake and exhaust simulation bench test of claim 7, wherein, The support frame (72) has a "U" shape, and a plurality of limiting holes (721) are arranged on the two sides of the support frame (72) in the vertical direction; a plurality of positioning holes (731) are arranged on the support rod (73), and a bolt (74) passes through the corresponding limiting hole (721) and the positioning hole (731) to fix the oil-gas separator (6).

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