Pressure control valve, oil-gas separator and vehicle

Abstract

The embodiment of the present invention discloses a pressure control valve, an oil-gas separator and a vehicle. The pressure control valve comprises: an inner shell, an outer shell, a diaphragm and an adjusting component; wherein the inner shell is connected to the outer shell, and a separation chamber inlet and a separation chamber outlet are provided on the inner shell; the diaphragm is arranged inside a shell composed of the inner shell and the outer shell, and a separation chamber is formed between the diaphragm and the inner shell; the adjusting component is arranged on the inner shell, and the position of the adjusting component relative to the inner shell can be adjusted to adjust the opening of the diaphragm. The embodiment of the present invention solves the problem of low efficiency of ash deposition rate in the GPF system by adding an adjusting component to the pressure control valve. The adjusting component increases the opening of the diaphragm, so that the blowby amount of the pressure control valve increases, thereby improving the ash deposition rate in the GPF system, so as to facilitate subsequent research on the influence of ash on the GPF system.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of vehicle engineering technology, and in particular to a pressure control valve, an oil-gas separator and a vehicle. Background Art

[0002] At present, the problem of air pollution has attracted much attention from the society. According to the survey on the causes of smog in China, motor vehicle exhaust emissions are one of the main factors causing air pollution. In the context of prominent air pollution problems, light vehicle emission regulations are becoming increasingly stringent. Gasoline Particulate Filter (GPF system) is a post-treatment device widely used in the exhaust system of National VI gasoline engines, and is a technical means to effectively meet emission requirements.

[0003] Research shows that one of the factors that has an important impact on the GPF system is ash. The main components of ash are metal salts such as Ca, Mg, and P. The main source of ash is fuel additives in the engine oil. The amount of engine oil involved in the combustion of gasoline engines directly affects the amount of ash in the GPF. However, during the normal driving of light vehicles, the ash accumulation in the GPF system is slow, time-consuming, and costly. How to quickly and effectively accumulate ash in the GPF system while taking into account the cost has become a major problem faced by GPF system carrier suppliers, vehicle manufacturers, and lubricant suppliers.

[0004] In order to increase the ash accumulation rate in the GPF system, some people have proposed adding low-concentration engine oil to the fuel. When the fuel is sprayed into the gasoline engine, this part of the engine oil will be sprayed into the gasoline engine along with the fuel to participate in the combustion, thereby increasing the ash deposition rate. Others have proposed using a burner to inject the high-temperature gas products generated by the combustion of the engine oil into the exhaust of the gasoline engine. The ash generated by the combustion of the engine oil will enter the GPF system along with the exhaust, thereby increasing the ash deposition rate in the GPF system.

[0005] The oil consumption in gasoline engines mainly occurs in the cylinder bore and piston assembly (55-65%), the crankcase ventilation assembly (20-30%), the valve oil seal assembly (5-10%) and the supercharger bearing (0-5%). However, the above two technical methods are different from the chemical components and combustion mechanisms of the oil involved in the combustion of gasoline engines during the normal combustion of oil to produce ash in gasoline engines. Some people also proposed to invert the oil plug and oil ring in the gasoline engine, so as to scrape the oil in the cylinder liner of the gasoline engine into the combustion chamber to participate in the combustion and accelerate the deposition rate of ash. However, this technical method still has the technical problem of insufficient lubrication in the cylinder liner and mechanical damage. Summary of the invention

[0006] The embodiments of the present invention provide a pressure control valve, an oil-gas separator and a vehicle to improve the ash deposition rate in the GPF system so as to subsequently study the influence of ash on the GPF system.

[0007] In a first aspect, an embodiment of the present invention provides a pressure control valve, the pressure control valve comprising: an inner housing, an outer housing, a diaphragm and a regulating assembly;

[0008] Wherein, the inner shell is connected to the outer shell, and the inner shell is provided with a separation chamber inlet and a separation chamber outlet;

[0009] The diaphragm is arranged inside the housing composed of the inner housing and the outer housing, and a separation chamber is formed between the diaphragm and the inner housing;

[0010] The adjusting component is arranged on the inner shell, and the position of the adjusting component relative to the inner shell can be adjusted to adjust the opening of the diaphragm.

[0011] Optionally, the adjustment assembly is connected to the inner shell by a slot or a thread.

[0012] Optionally, the adjusting component is arranged on the inner wall of the separation chamber outlet of the inner shell, or the adjusting component is arranged on the inner wall of the separation chamber inlet of the inner shell.

[0013] Optionally, the regulating component includes a hollow component, and the outer wall of the hollow component is connected to the inner wall of the separation chamber outlet or the inner wall of the separation chamber inlet on the inner shell.

[0014] Optionally, the pressure control valve further includes a vent hole disposed on the outer shell.

[0015] Optionally, the pressure control valve further includes a pressure spring, which is arranged in the separation chamber and contacts the regulating assembly and the diaphragm respectively.

[0016] In a second aspect, an embodiment of the present invention further provides an oil-gas separator, which includes an oil-gas separation device and any one of the pressure control valves mentioned above, wherein the mixed gas outlet of the oil-gas separation device is connected to the separation chamber inlet of the pressure control valve.

[0017] Optionally, the oil-gas separation device includes a first oil-gas separation device and a second oil-gas separation device, the outlet of the first oil-gas separation device is connected to the inlet of the second oil-gas separation device, wherein the blowby gas separation accuracy of the second oil-gas separation device is greater than the blowby gas separation accuracy of the first oil-gas separation device.

[0018] In a third aspect, an embodiment of the present invention further provides a vehicle, the vehicle comprising: a crankcase, a gas processing device and any one of the oil-gas separators described above;

[0019] Wherein, the crankcase is provided with a blow-by gas outlet, and the blow-by gas outlet is connected to the air inlet on the oil-gas separator;

[0020] The gas processing device is provided with a gas processing inlet, and the gas processing inlet is connected to the separation chamber outlet of the pressure control valve in the oil-gas separator.

[0021] Optionally, the gas processing device includes an intake manifold or a turbocharger.

[0022] The embodiment of the present invention solves the problem of low ash deposition rate efficiency in the GPF system by adding a regulating component to the pressure control valve. The regulating component increases the opening of the diaphragm, thereby increasing the blowby amount of the pressure control valve, thereby increasing the ash deposition rate in the GPF system, so as to facilitate subsequent research on the impact of ash on the GPF system. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of a pressure control valve provided in Example 1 of the present invention.

[0024] Figure 2 It is a structural schematic diagram of another pressure control valve provided in Example 1 of the present invention.

[0025] Figure 3 It is a structural schematic diagram of another pressure control valve provided in Example 1 of the present invention.

[0026] Figure 4 It is a structural schematic diagram of another pressure control valve provided in Example 1 of the present invention.

[0027] Figure 5 It is a schematic diagram of adjusting the diaphragm opening by the adjusting component provided in the first embodiment of the present invention.

[0028] Figure 6 It is a structural schematic diagram of an oil-gas separator provided in Embodiment 2 of the present invention.

[0029] Figure 7 It is a structural schematic diagram of a vehicle provided in Embodiment 3 of the present invention. DETAILED DESCRIPTION

[0030] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0031] Embodiment 1

[0032] Figure 1This is a schematic diagram of the structure of a pressure control valve provided in the first embodiment of the present invention. This embodiment can be used to accelerate the ash deposition in the GPF system. The pressure control valve can be configured in the oil-gas separator. The pressure control valve includes: an inner housing 100, an outer housing 200, a diaphragm 300 and an adjustment component 400;

[0033] Among them, the inner shell 100 is connected to the outer shell 200, and the inner shell 100 is provided with a separation chamber inlet 110 and a separation chamber outlet 120; the diaphragm 300 is arranged inside the shell composed of the inner shell 100 and the outer shell 200, and a separation chamber is formed between the diaphragm 300 and the inner shell 100; the adjustment component 400 is arranged on the inner shell 100, and the position of the adjustment component 400 relative to the inner shell 100 can be adjusted, so as to adjust the opening of the diaphragm 300.

[0034] like Figure 1 As shown, Figure 1 The cross-sectional view of the pressure control valve taken along line AA is shown. The inner housing 100 is above the outer housing 200, and the mixed gas enters the separation chamber through the separation chamber inlet 110, flows through the separation chamber and exits the pressure control valve through the separation chamber outlet 120. The mixed gas includes gas containing a small amount of engine oil after being separated by the oil-gas separator.

[0035] In one embodiment, optionally, the adjustment component 400 is disposed on the inner wall of the separation chamber outlet 120 of the inner shell 100 , or the adjustment component 400 is disposed on the inner wall of the separation chamber inlet 110 of the inner shell 100 . Figure 1 The diagram shows that the adjustment component 400 is disposed on the inner wall of the separation chamber outlet 120 of the inner housing 100. For example, the material of the adjustment component 400 may be plastic, metal, glass, ceramic or rubber, etc., and the material of the adjustment component 400 is not limited here.

[0036] In one embodiment, optionally, the adjustment component 400 and the inner shell 100 are connected by a slot or a thread. Wherein, exemplarily, the slot connection means that a male buckle is provided on the outer wall of the adjustment component 400, and a female buckle corresponding to the male buckle is provided at the part where the inner shell 100 and the adjustment component 400 are connected, or a female buckle is provided on the outer wall of the adjustment component 400, and a male buckle corresponding to the female buckle is provided at the part where the inner shell 100 and the adjustment component 400 are connected. Wherein, the male buckle represents a convex structure, and the female buckle represents a concave structure. Exemplarily, the shape type of the slot can be circular, square, triangular or irregular, and the type of the slot is not limited here. In one embodiment, optionally, a slot or a thread is provided on part of the outer wall of the adjustment component 400. Exemplarily, taking the thread as an example, the entire outer wall of the adjustment component 400 is provided with a thread. The advantage of such a setting is that the adjustment component 400 is not restricted when adjusting the opening of the diaphragm 300. Specifically, the bottom end of the adjustment assembly 400 can be adjusted to or above the bottom end position of the separation chamber outlet 120 or the separation chamber inlet 110 , without increasing the ash deposition rate of the vehicle during normal use.

[0037] When threads are provided on part of the outer wall of the adjustment component 400, for example, threads may not be provided at the upper end of the adjustment component 400, threads may not be provided at the lower end of the adjustment component 400, or threads may only be provided at the middle position of the adjustment component 400, and threads may not be provided at both the upper and lower ends, wherein the position and length of the threaded portion of the adjustment component 400 may be set according to the adjustment requirements of the adjustment component 400 in the pressure control valve. Taking the example of no threads being provided at the upper end of the adjustment component 400, the advantage of such a setting is that it is convenient to adjust the position of the adjustment component 400, and the adjustment component 400 will not enter the separation chamber outlet 120 or the separation chamber inlet 110 due to non-subjective factors such as vehicle vibration, thereby affecting normal use. Taking the case where no threads are provided at the lower end of the adjustment component 400 as an example, the advantage of such a setting is that it can ensure that, based on the existing technology, the opening of the diaphragm 300 is always maintained at a basic level, and the bottom end of the adjustment component 400 will not be located at the bottom end or above the separation chamber outlet 120 or the separation chamber inlet 110 due to non-subjective factors such as vehicle vibration, thereby affecting the ash deposition rate in the GPF system. Figure 1 The adjustment assembly 400 and the inner housing 100 are shown in FIG. Figure 1 As shown, the lower end of the adjustment assembly 400 is not provided with threads.

[0038] In one embodiment, optionally, the pressure control valve further includes a control component, and the control component is used to control the position of the adjustment component 400 relative to the inner shell 100.

[0039] In one embodiment, optionally, the adjustment component 400 includes a hollow component, and the outer wall of the hollow component is connected to the inner wall of the separation chamber outlet 120 or the separation chamber inlet 110 on the inner shell 100. Wherein, illustratively, the inner wall of the separation chamber outlet 120 or the separation chamber inlet 110 includes a part of the inner wall of the separation chamber outlet 120 or the separation chamber inlet 110 or the entire inner wall. Figure 1 The diagram shows a situation where the regulating assembly 400 is connected to the entire inner wall of the separation chamber outlet 120 . Figure 2 FIG. 1 is a schematic diagram of the structure of another pressure control valve provided by an embodiment of the present invention. Figure 2 As shown, the regulating component 400 is connected to a part of the inner wall of the separation chamber outlet 120. In one embodiment, optionally, the regulating component 400 includes a solid component, and the solid component is connected to a part of the inner wall of the separation chamber outlet 120.

[0040] In one embodiment, optionally, the pressure control valve further includes a vent hole 500 disposed on the outer shell 200 . Figure 3 FIG. 1 is a schematic diagram of the structure of another pressure control valve provided by an embodiment of the present invention. Figure 3 As shown, the vent hole 500 passes through the shell of the outer shell 200, and the vent hole 500 passes through the cavity formed by the diaphragm 300 and the outer shell 200 and the external environment.

[0041] In the present embodiment, the diaphragm 300 includes an elastic diaphragm, and illustratively, the diaphragm 300 may be a rubber diaphragm. When the air pressure in the separation chamber is less than the atmospheric pressure, the diaphragm 300 moves upward under the action of the atmospheric pressure, so that the opening of the diaphragm 300 decreases, the volume in the separation chamber decreases, and the amount of blowby gas entering the separation chamber decreases; when the air pressure in the separation chamber is greater than the atmospheric pressure, the diaphragm 300 moves downward under the action of the air pressure in the separation chamber, so that the opening of the diaphragm 300 increases, the volume in the separation chamber increases, and the amount of blowby gas entering the separation chamber increases. Among them, the air pressure in the separation chamber is regulated by the oil-gas separation device connected to the separation chamber inlet 110 and the gas processing device connected to the separation chamber outlet 120. The advantage of such a setting is that the amount of blowby gas in the separation chamber is regulated by the atmospheric pressure, and the air pressure in the device connected to the separation chamber inlet 110 or the separation chamber outlet 120 will not be too high or too low.

[0042] In one embodiment, optionally, the pressure control valve further includes a pressure spring 500 , which is disposed in the separation chamber and contacts the regulating assembly 400 and the diaphragm 300 , respectively. Figure 4 The advantage of this arrangement is that the pressure spring 500 is more sensitive to air pressure changes than the diaphragm 300, and can better adapt to the air pressure changes in the separation chamber and adjust the opening of the diaphragm 300.

[0043] On the basis of the above embodiment, specifically, by pressing or rotating the adjustment component 400, the relative position of the adjustment component 400 with respect to the inner housing 100 is changed, and then the opening of the diaphragm 300 is changed, so as to achieve the purpose of adjusting the volume in the separation chamber. Figure 5 Schematic diagram of the adjustment component for adjusting the diaphragm opening provided in the first embodiment of the present invention. Figure 5 As shown, Figure 5 The left picture shows that the adjustment assembly 400 is at a higher position relative to the inner shell 100. At this time, the volume in the separation chamber is smaller. Figure 5 The right picture shows that the adjustment assembly 400 is in a lower position relative to the inner shell 100, and the volume in the separation chamber is larger at this time.

[0044] The pressure control valve in this embodiment solves the problem of low ash deposition rate efficiency in the GPF system. The regulating component increases the opening of the diaphragm, which increases the amount of blowby gas in the pressure control valve, thereby increasing the ash deposition rate in the GPF system, allowing for subsequent research on the impact of ash on the GPF system.

[0045] Embodiment 2

[0046] Figure 6 It is a structural schematic diagram of an oil-gas separator provided in the second embodiment of the present invention, and the oil-gas separator includes an oil-gas separation device 20 and a pressure control valve 10 provided in any embodiment of the present invention. Among them, the gas outlet of the oil-gas separation device 20 is connected to the separation chamber inlet 110 of the pressure control valve 10. In one embodiment, optionally, the gas outlet and the separation chamber inlet 110 can be aligned and connected, or they can be connected through a connecting device. Exemplarily, the connecting device can be a plastic tube or a metal tube. The connection method of the gas outlet and the separation chamber inlet 110 is not limited here.

[0047] In one embodiment, optionally, the oil-gas separation device 20 includes a first oil-gas separation device 210 and a second oil-gas separation device 220, and the air outlet of the first oil-gas separation device 210 is connected to the air inlet of the second oil-gas separation device 220, wherein the blowby gas separation accuracy of the second separation device 220 is greater than the blowby gas separation accuracy of the first oil-gas separation device 210. For example, the blow-by gas generated by the vehicle enters the oil-gas separator through the air inlet of the first oil-gas separation device 210. When the blow-by gas passes through the first oil-gas separation device 210, the larger oil particles in the blow-by gas are roughly separated and flow back to the crankcase. The remaining blow-by gas is discharged from the air outlet of the first oil-gas separation device 210 and enters the second oil-gas separation device 220 from the air inlet of the second oil-gas separation device 220. The blow-by gas after the rough separation is finely separated in the second oil-gas separation device 220, and the oil obtained by the fine separation flows back to the crankcase. The remaining mixed gas passes through the air outlet of the second oil-gas separation device 220 and the separation chamber inlet 110 of the pressure control valve 10 and enters the pressure control valve. Among them, part of the combustible mixed gas and combustion products generated when the engine is working form blow-by gas.

[0048] The oil-gas separator in this embodiment solves the problem of low ash deposition rate efficiency in the GPF system. The regulating component increases the opening of the diaphragm, which increases the amount of blowby gas in the pressure control valve, thereby increasing the ash deposition rate in the GPF system, so as to facilitate subsequent research on the impact of ash on the GPF system.

[0049] Embodiment 3

[0050] Figure 7 3 is a schematic diagram of the structure of a vehicle provided in the third embodiment of the present invention, and the vehicle includes a crankcase 30, a gas processing device 31, and an oil-gas separator 32 provided in any embodiment of the present invention. The crankcase 30 is provided with a blow-by gas outlet, which is connected to the air inlet on the oil-gas separator 32; the gas processing device 31 is provided with a gas processing inlet, which is connected to the separation chamber outlet 120 of the pressure control valve 10 in the oil-gas separator 32.

[0051] In one embodiment, the gas processing device 31 optionally includes an intake manifold or a turbocharger. The blowby gas after rough separation and fine separation by the oil-gas separator 32 enters the intake manifold or the turbocharger from the separation chamber outlet 120 of the pressure control valve 10, and then enters the cylinder and participates in the combustion in the cylinder.

[0052] Through the vehicle in this embodiment, the problem of low ash deposition rate efficiency in the GPF system is solved. The adjusting component increases the opening of the diaphragm, which increases the blowby volume of the pressure control valve, thereby increasing the ash deposition rate in the GPF system, so as to facilitate subsequent research on the impact of ash on the GPF system.

[0053] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A pressure control valve, characterized in that: include: Inner housing, outer housing, diaphragm and regulating assembly; Wherein, the inner shell is connected to the outer shell, and the inner shell is provided with a separation chamber inlet and a separation chamber outlet; The diaphragm is arranged inside the housing composed of the inner housing and the outer housing, and a separation chamber is formed between the diaphragm and the inner housing; The adjusting component is arranged on the inner shell, and the position of the adjusting component relative to the inner shell can be adjusted to adjust the opening of the diaphragm; Wherein, the adjustment component is connected to the inner shell by a slot or a thread. When the adjustment component is connected to the inner shell by a thread, no thread is provided at the lower end of the adjustment component. The regulating component is a hollow component or a solid component. When the regulating component is a hollow component, the outer wall of the hollow component is connected to a part or all of the inner wall of the separation chamber outlet or the separation chamber inlet on the inner shell; When the regulating component is a solid component, the outer wall of the solid component is connected to a portion of the inner wall of the separation chamber outlet or the separation chamber inlet on the inner shell.

2. The pressure control valve according to claim 1, characterized in that: The pressure control valve further comprises a vent hole, which is arranged on the outer shell.

3. The pressure control valve according to claim 1 or 2, characterized in that: The pressure control valve further comprises a pressure spring which is arranged in the separation chamber and contacts with the regulating assembly and the diaphragm respectively.

4. An oil-gas separator, characterized in that: It comprises an oil-gas separation device and a pressure control valve as claimed in any one of claims 1 to 3, wherein a mixed gas outlet of the oil-gas separation device is connected to a separation chamber inlet of the pressure control valve.

5. The oil-gas separator according to claim 4, characterized in that: The oil-gas separation device includes a first oil-gas separation device and a second oil-gas separation device, wherein the air outlet of the first oil-gas separation device is connected to the air inlet of the second oil-gas separation device, wherein the blowby gas separation accuracy of the second oil-gas separation device is greater than the blowby gas separation accuracy of the first oil-gas separation device.

6. A vehicle, characterized in that: It comprises a crankcase, a gas processing device and an oil-gas separator as claimed in claim 4 or 5; Wherein, the crankcase is provided with a blow-by gas outlet, and the blow-by gas outlet is connected to the air inlet on the oil-gas separator; The gas processing device is provided with a gas processing inlet, and the gas processing inlet is connected to the separation chamber outlet of the pressure control valve in the oil-gas separator.

7. The vehicle according to claim 6, characterized in that The gas processing device includes an intake manifold or a turbocharger.

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