Pressure adjusting device and vehicle

Abstract

The invention discloses a pressure adjusting device and a vehicle, the pressure adjusting device comprises a pipeline structure, the pipeline structure is communicated with a pressure adjusting valve among a crankcase, an air filter and the air inlet side of an engine, the pressure adjusting valve is arranged in the pipeline structure, the pressure adjusting valve is provided with a throttling part, and the throttling part is arranged in the pipeline structure; the throttling part is arranged in the crankcase, the air inlet area of the throttling part is S1, the air outlet area of the throttling part is S2, and S1 is larger than S2, so that a negative pressure source is formed on the communicating side of the crankcase and the pipeline structure when air flows through the throttling part. Therefore, the throttling part is arranged on the pressure regulating valve, the negative pressure source is formed on the air outlet side of the pressure regulating valve in the mode that the throttling part is used for regulating the flow speed of the air flow passing through the throttling part (namely increasing the flow speed of the air flow), and the negative pressure source can be communicated with one side of the crankcase through the pipeline structure, so that the side of the crankcase can be regulated to be negative pressure; the arrangement space can be saved, the complexity of the pressure adjusting device is reduced, and the cost is reduced.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a pressure regulating device and a vehicle. Background Art

[0002] Currently, negative crankcase pressure in engines can prevent excessive crankcase pressure, extend oil life, reduce component corrosion, and prevent oil leaks. Furthermore, negative crankcase pressure minimizes changes in crankcase pressure when piston movement causes changes in crankcase volume. Furthermore, due to regulations on crankcase pollutant emissions, negative crankcase pressure is required under specific engine operating conditions.

[0003] In the related art, an active oil-gas separator is provided at the crankcase, and the crankcase pressure is adjusted to a negative pressure by a motor or oil drive. However, the motor requires layout space and is costly, while the oil requires additional power to make it flow. Summary of the Invention

[0004] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the present application is to provide a pressure regulating device that can achieve negative pressure in the crankcase.

[0005] According to the first aspect of the present application, the pressure regulating device includes: a pipeline structure, the pipeline structure is connected to a pressure regulating valve between the crankcase, the air filter and the intake side of the engine, the pressure regulating valve is arranged in the pipeline structure, and the pressure regulating valve is provided with a throttling part, the intake area of the throttling part is S1, the outlet area of the throttling part is S2, and S1>S2, so as to form a negative pressure source on the connecting side of the crankcase and the pipeline structure when the gas flows through the throttling part.

[0006] According to the pressure regulating device of the embodiment of the present application, a throttle portion is provided on the pressure regulating valve. The throttle portion regulates the flow rate of the airflow passing through the throttle portion (i.e., accelerates the flow rate of the airflow), thereby forming a negative pressure source on the outlet side of the pressure regulating valve. The negative pressure source is connected to the crankcase side via a pipeline structure, thereby adjusting the crankcase side to a negative pressure. In other words, the throttle portion structure of the present application conforms to the Venturi effect, eliminating the need for further equipment to actively drive the negative pressure, thus saving layout space, reducing the complexity of the pressure regulating device, and lowering costs.

[0007] In some embodiments of the present application, the pressure regulating valve includes: a first valve body, which is fixed in the pipeline structure and is provided with the throttling portion and the first valve hole; a first valve plate, which is arranged opposite to the first valve hole and can move relative to the first valve body along the first direction to selectively open the first valve hole.

[0008] In some embodiments of the present application, the throttling portion is configured as a jet hole, the jet hole is arranged through along the first direction, and the opening cross-sectional size of the jet hole is arranged to decrease from the air inlet side to the air outlet side.

[0009] In some embodiments of the present application, there are multiple jet holes, and the multiple jet holes are circumferentially arranged around the outside of the first valve hole.

[0010] In some embodiments of the present application, the first valve body includes: a first seat body, the first seat body forms the first valve hole and the jet hole; a second seat body, the second seat body is connected to the first seat body and is arranged on the air outlet side of the first valve hole, and the first valve plate is arranged between the first seat body and the second seat body.

[0011] In some embodiments of the present application, the first seat body is provided with a conical platform, the conical platform forms the jet hole, and the cross-sectional area of the conical platform is gradually reduced toward the second seat body in the first direction.

[0012] In some embodiments of the present application, the second seat body is provided with a guide groove arranged along the first direction, and a guide rod is connected to the surface of the first valve plate on the side opposite to the second seat body, and the guide rod is plugged into and fitted with the guide groove.

[0013] In some embodiments of the present application, the pressure regulating valve further includes a first elastic member, which is elastically supported between the second seat body and the first valve plate, and the first elastic member is suitable for storing energy when the first valve plate moves along the first direction toward the side of the second seat body.

[0014] In some embodiments of the present application, the pressure regulating valve includes: a second valve body, which is fixed in the pipeline structure, and the second valve body is provided with a second valve hole and a third valve hole arranged through along a first direction; a second valve plate, which is rotatably arranged in the second valve hole around a first axis, and the second valve plate can define the throttling portion with the hole wall of the second valve hole.

[0015] In some embodiments of the present application, the second valve plate includes: a first plate segment, the first plate segment is located on one radial side of the first axis; a second plate segment, the second plate segment is connected to the first plate segment and is located on the other radial side of the first axis; wherein, the second plate segment can be flipped around the first axis toward the air outlet side of the second valve hole, and is defined by the hole wall of the second valve hole to form the throttling portion.

[0016] In some embodiments of the present application, the thickness of the second plate segment is gradually reduced toward the side away from the first plate segment; and / or the mass of the second plate segment (222) is lighter than the mass of the first plate segment (221).

[0017] In some embodiments of the present application, the second valve body includes: a third seat body, which forms the second valve hole and the third valve hole; a fourth seat body, which is arranged on the outlet side of the second valve hole and the third valve hole, and is spaced apart from the third seat body in the first direction, and a second elastic member is connected between the fourth seat body and the first plate segment, and the second elastic member is suitable for storing energy when the first plate segment flips around the first axis toward the inlet side of the second valve hole.

[0018] In some embodiments of the present application, a limiting portion is provided in the second valve hole, and the limiting portion cooperates with the second valve plate to limit the axial movement of the second valve plate along the first axis.

[0019] In some embodiments of the present application, the pressure regulating valve includes: a third valve body, which is fixed in the pipeline structure and is formed with a fourth valve hole arranged through the third valve body along the first direction; a third valve plate, which is rotatably arranged in the third valve body around a second axis, and the third valve plate and the hole wall of the fourth valve hole define the throttling portion.

[0020] In some embodiments of the present application, the third valve plate includes: a third plate segment, which is located on one radial side of the second axis; and a fourth plate segment, which is connected to the third plate segment and is located on the other radial side of the second axis; wherein the third plate segment can be flipped around the second axis toward the air outlet side of the fourth valve hole, and is defined together with the hole wall of the fourth valve hole to form the throttling portion.

[0021] In some embodiments of the present application, the pressure regulating valve further includes a counterweight, which is disposed on the gas outlet side surface of the fourth plate segment and is suitable for maintaining the third valve plate in a position inclined relative to the first direction when no gas passes through the fourth valve hole.

[0022] In some embodiments of the present application, a first limiting portion is provided in the hole wall of the fourth valve hole, and the first limiting portion is used to limit and cooperate with the side surface of the third plate segment opposite to the air inlet side of the fourth valve hole; and / or, a second limiting portion is provided in the hole wall of the fourth valve hole, and the second limiting portion is used to limit and cooperate with the side surface of the third plate segment opposite to the air outlet side of the fourth valve hole.

[0023] According to the vehicle of the second embodiment of the present application, the vehicle includes the above-mentioned pressure regulating device.

[0024] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0026] Figure 1 is a schematic cross-sectional view of a pressure regulating device according to one embodiment of the present application;

[0027] Figure 2 is a schematic diagram of a pressure regulating device according to one embodiment of the present application;

[0028] Figure 2 is a schematic diagram of a pressure regulating valve according to one embodiment of the present application;

[0029] Figure 3 is a cross-sectional view of a pressure regulating valve according to one embodiment of the present application;

[0030] Figure 4 is a front view of a pressure regulating valve according to one embodiment of the present application;

[0031] Figure 5 is a schematic diagram of a pipeline structure according to an embodiment of the present application;

[0032] Figure 6 This is a schematic diagram of the structure of a pressure regulating valve according to another embodiment of the present application. Figure 1 ;

[0033] Figure 7 This is a schematic diagram of the structure of a pressure regulating valve according to another embodiment of the present application. Figure 2 ;

[0034] Figure 8 is a front view of a pressure regulating valve according to another embodiment of the present application;

[0035] Figure 9is a rear view of a pressure regulating valve according to another embodiment of the present application;

[0036] Figure 10 is a cross-sectional view of a pressure regulating valve according to another embodiment of the present application;

[0037] Figure 11 is a structural schematic diagram of a valve plate according to an embodiment of the present application;

[0038] Figure 12 is a structural schematic diagram of a pressure regulating valve according to another embodiment of the present application;

[0039] Figure 13 is a cross-sectional view of a pressure regulating valve according to another embodiment of the present application;

[0040] Figure 14 is a front view of a third valve body according to one embodiment of the present application;

[0041] Figure 15 yes Figure 14 Section view at midline AA;

[0042] Figure 16 This is a schematic diagram of the cooperation between the third valve plate and the counterweight according to an embodiment of the present application. Figure 1 ;

[0043] Figure 17 This is a schematic diagram of the cooperation between the third valve plate and the counterweight according to an embodiment of the present application. Figure 2 ;

[0044] Figure 18 It is a cross-sectional schematic diagram of a pressure regulating device according to another embodiment of the present application.

[0045] Reference numerals:

[0046] Pressure regulating device 100; pipeline structure 200; first connection end 201; second connection end 202; third connection end 203;

[0047] Pressure regulating valve 1;

[0048] First valve body 11; first valve hole 111; first seat body 112; conical platform 1121; second seat body 113; guide groove 1131; jet hole 114;

[0049] First valve plate 12; guide rod 121; first elastic member 13;

[0050] Second valve body 21; second valve hole 211; third valve hole 212; third seat body 213; fourth seat body 214;

[0051] Second valve plate 22; first plate section 221; spring buckle 2211; second plate section 222; first rotating shaft 23; limiting portion 231; second elastic member 24;

[0052] The third valve body 31; the fourth valve hole 311; the first limiting portion 312; the second limiting portion 313;

[0053] The third valve plate 32 ; the third plate segment 321 ; the fourth plate segment 322 ; the counterweight 33 ; and the second rotating shaft 34 . DETAILED DESCRIPTION

[0054] The following describes in detail embodiments of the present application. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application.

[0055] Reference below Figures 1-18 The pressure regulating device 100 according to an embodiment of the present application is described. The pressure regulating device 100 is arranged between the crankcase, the air filter and the intake side of the engine. The pressure regulating device 100 can form a negative pressure source at the ventilation duct connected to the crankcase, while ensuring the intake volume and power of the engine, and maintaining negative pressure in the crankcase.

[0056] The pressure regulating device 100 according to an embodiment of the present application includes: a pipeline structure 200 and a pressure regulating valve 1 .

[0057] Among them, the pipeline structure 200 is connected between the crankcase, the air filter and the intake side of the engine. The gas discharged through the ventilation pipeline of the crankcase can enter the pipeline structure 200 and be transported to the engine side by the pipeline structure 200. The gas filtered by the air filter will also flow into the pipeline structure 200 and be further transported to the engine side.

[0058] Furthermore, the pressure regulating valve 1 is arranged in the pipeline structure 200, and the pressure regulating valve 1 is provided with a throttling portion, the air inlet area of the throttling portion is S1, the air outlet area of the throttling portion is S2, and S1>S2, so that a negative pressure source is formed on the connecting side of the crankcase and the pipeline structure 200 when the gas flows through the throttling portion.

[0059] It should be noted that the throttle portion is a ventilation structure in the pressure regulating valve 1 for allowing gas from one side of the air filter to enter the pipeline structure 200 to pass through. The throttle portion can be a hole structure, or a plurality of components together define a ventilation structure with a throttling function.

[0060] Reference Figure 1Pressure regulating valve 1 is positioned upstream of the connection between the crankcase and pipeline structure 200. Specifically, the throttle portion of pressure regulating valve 1 is located near the connection between the crankcase and pipeline structure 200, near the connection between pipeline structure 200 and the air filter. When gas from the air filter flows into pipeline structure 200, it flows through pressure regulating valve 1. The throttle portion creates a negative pressure source on the connection between the crankcase and pipeline structure 200, thereby adjusting the crankcase pressure to a negative level, lowering the crankcase pressure below atmospheric pressure.

[0061] like Figure 1 As shown, the pipeline structure 200 includes a first connecting end 201, a second connecting end 202 and a third connecting end 203. The first connecting end 201 is used to be connected to the ventilation pipeline of the crankcase, and the gas in the ventilation pipeline can flow into the pipeline structure 200 through the first connecting end 201; the second connecting end 202 is used to be connected to one side of the air filter, and the gas filtered by the air filter can flow into the pipeline structure 200 through the second connecting end 202, and further be discharged through the third connecting end 203 after flowing through the pressure regulating valve 1; the third connecting end 203 is used to be connected to the intake side pipeline structure 200 of the engine, and the gas in the pipeline structure 200 can flow to the side of the engine through the third connecting end 203.

[0062] In the present application, the air inlet area S1 of the throttle portion is greater than the air outlet area S2, that is, the communication area between the throttle portion and the second connecting end 202 is greater than the communication area between the throttle portion and the second connecting end 202 and the third connecting end 203. When the gas flows through the throttle portion, the flow rate of the gas can be increased, so that the pressure of the pressure regulating valve 1 on the air outlet side of the throttle portion is reduced, and a negative pressure is generated at the first connecting end 201, thereby adjusting the pressure of the crankcase to a negative pressure.

[0063] It can be understood that the throttling portion in the present application conforms to the Venturi effect. After the gas flows through the throttling portion, the flow area is reduced, and the flow velocity of the gas after passing through the throttling portion increases, so that the pressure on the outlet side of the throttling portion in the pipeline structure 200 (that is, near the high-speed air flow) is reduced, and an adsorption effect is generated. Then, the connecting area between the ventilation pipeline of the crankcase and the pipeline structure 200 can be constructed as a negative pressure source, and the pressure on the crankcase side can be adjusted to a negative pressure.

[0064] It should be noted that, according to GB18352.6-2016, under all operating conditions specified in the standard, measured crankcase pressure must not exceed atmospheric pressure at the time of measurement. Therefore, regardless of whether the engine is used in a gasoline-powered or hybrid vehicle, the crankcase pressure must be negative. Related technologies employ an active oil-gas separator in the crankcase, which is driven by a motor to adjust the crankcase pressure to a negative pressure. However, the motor requires space and is costly.

[0065] Furthermore, during engine operation, some of the high-pressure mixture in the combustion chamber enters the crankcase through the gap between the piston and the cylinder bore, forming blowby gas. This blowby gas enters the engine's intake section after the air filter via the forced crankcase ventilation system's oil-gas separator and ventilation duct, and then re-enters the combustion chamber. As the gas flows through the oil-gas separator and ventilation duct, a certain pressure drop occurs, such as ΔP1 (pressure drop across the oil-gas separator) and ΔP2 (pressure drop across the ventilation duct). The crankcase pressure P_crank satisfies the equation P_crank = ΔP1 + ΔP2 + P_air_filter_out. Due to the oil-gas separation requirements, the required oil carryover is only met when ΔP1 and ΔP2 are present. Therefore, the crankcase pressure P_crank depends on the air filter outlet pressure P_air_filter_out. In other words, a negative pressure source is required to maintain a negative crankcase pressure.

[0066] In the present application, a throttle portion is provided on the pressure regulating valve 1, and the throttle portion is used to adjust the flow rate of the airflow passing through the throttle portion (i.e., to accelerate the flow rate of the airflow), thereby forming a negative pressure source (i.e., the aforementioned P_air_filter_out: the pressure on the air filter outlet side) on the outlet side of the pressure regulating valve 1. Furthermore, the negative pressure source can be connected to the crankcase side via the pipeline structure 200, thereby adjusting the crankcase side to a negative pressure. In other words, the throttle portion structure in the present application conforms to the Venturi effect, eliminating the need for further equipment to actively drive and generate negative pressure, thereby saving layout space, reducing the complexity of the pressure regulating device 100, and lowering costs.

[0067] It should be noted that the pressure regulating device 100 in the present application can be applied to engines with turbocharged intake mode and naturally aspirated intake mode, that is, the pressure regulating device 100 in the present application has good versatility.

[0068] like Figure 1 and Figure 2 As shown, in some embodiments of the present application, the pressure regulating valve 1 includes a first valve body 11 and a first valve plate 12 .

[0069] Among them, the first valve body 11 is fixed in the pipeline structure 200, and the first valve body 11 is provided with a throttling part and a first valve hole 111. The gas entering the pipeline structure 200 through the air filter side needs to flow through the first valve body 11 before flowing to the engine side, and the first valve plate 12 is arranged opposite to the first valve hole 111. The first valve plate 12 can move relative to the first valve body 11 along the first direction to selectively open the first valve hole 111 according to the size of the intake air.

[0070] Combine Figure 1 and Figure 2As can be seen, the throttle remains open, allowing gas entering the pipeline structure 200 through the second connection end 202 to flow through the throttle, pass through the first valve body 11, and further flow toward the engine. The throttle increases the flow rate of the gas, thereby creating a negative pressure source on the side of the pipeline structure 200 that connects to the crankcase.

[0071] Furthermore, the first valve hole 111 can move in the first direction under the impetus of the airflow to open the first valve port, and the gas can pass through the first valve body 11 through the first valve port. At this time, part of the gas can pass through the first valve body 11 by flowing through the throttle portion, and the other part of the gas can pass through the first valve body 11 by flowing through the first valve port.

[0072] Among them, when the first valve plate 12 opens the first valve hole 111 under the push of the airflow, the engine's intake volume is large and the airflow velocity is fast. The fast-flowing airflow can form a negative pressure on the side of the pipeline structure 200 connected to the crankcase, thereby realizing negative pressure in the crankcase; when the engine's intake volume is small, the first valve plate 12 is in a closed state, and the gas entering the pipeline structure 200 through the air filter only passes through the first valve body 11 through the throttling part. Under the action of the throttling part, the flow velocity of the gas can be increased, thereby forming a negative pressure on the side of the pipeline structure 200 connected to the crankcase, thereby realizing negative pressure in the crankcase.

[0073] It is understandable that the vehicle's engine has multiple operating conditions. When the engine is in a low-speed, high-load operating condition, the engine's intake volume is small, and the gas flow entering the pipeline structure 200 through the air filter side is small. The gas cannot drive the first valve plate 12 to open, but the gas can pass through the first valve body 11 from the throttle portion and form a negative pressure source under the action of the throttle portion to achieve crankcase negative pressure; when the engine is in a high-speed, high-load operating condition, the engine's intake volume is large, and the gas flow entering the pipeline structure 200 through the air filter side is large. Under the action of the airflow, the first valve plate 12 can be driven to open, and the large-flow gas flows through the first valve port and flows to the engine side through the pipeline structure 200. Due to the large intake volume, under the action of the air filter's own pressure drop, the negative pressure source on the crankcase and pipeline structure 200 connection side is sufficient, and the crankcase negative pressure can be achieved, and the engine's power can be guaranteed without affecting the intake volume.

[0074] like Figure 1 As shown, in some embodiments of the present application, the throttle portion is configured as a jet hole 114. Jet hole 114 is arranged through the first direction, and the opening cross-sectional size of jet hole 114 is arranged to decrease from the intake side to the outlet side. When the gas passes through jet hole 114, the flow velocity of the gas increases, thereby forming a negative pressure source on the outlet side of jet hole 114, achieving negative crankcase pressure.

[0075] It is understood that, depending on engine operating conditions (e.g., engine speed and load), when the engine is operating at low intake flow, the jet hole 114 structure can increase the gas flow rate, creating a negative pressure effect in the pipeline structure 200, thereby adjusting the crankcase pressure to a negative pressure. Furthermore, the jet hole 114 has a simple structure, is easy to form, and is integrated into the pressure regulating valve 1, eliminating the need for additional layout space.

[0076] In some embodiments of the present application, there are multiple jet holes 114, and the multiple jet holes 114 are arranged circumferentially around the outside of the first valve hole 111, so as to enhance the effect of forming negative pressure through the jet holes 114 of the first valve body 11 by setting multiple jet holes 114.

[0077] It should be noted that the inlet area of each jet hole 114 is larger than its outlet area, meaning that each jet hole 114 has the effect of increasing the gas flow rate. When the multiple jet holes 114 have the same shape and size, the inlet area S1 of the throttle portion is the sum of the inlet areas of the multiple jet holes 114, and the outlet area S2 of the throttle portion is the sum of the outlet areas of the multiple jet holes 114. For example, if the number of jet holes 114 is N, and the inlet area of each jet hole 114 is S3 and the outlet area is S4, then S1 = N × S3 and S2 = N × S4.

[0078] The number, shape and opening size of the jet holes 114 can be designed according to the maximum power of the engine and the air intake mode of the engine (such as turbocharging, natural aspiration, etc.), and are not specifically limited here. Figure 4 The first valve hole 111 is located in the middle of the first valve body 11, and multiple jet holes 114 are provided. The jet holes 114 are arranged circumferentially outside the first valve hole 111 and are evenly spaced. The jet holes 114 are positioned adjacent to the peripheral wall of the piping structure 200, bringing the negative pressure source closer to the crankcase, thereby enhancing the negative pressure effect at the crankcase.

[0079] like Figure 2 As shown, in some embodiments of the present application, the first valve body 11 includes: a first seat body 112 and a second seat body 113 .

[0080] The first seat body 112 forms a first valve hole 111 and a jet hole 114 , the second seat body 113 is connected to the first seat body 112 , and the second seat body 113 is arranged on the outlet side of the first valve hole 111 , and the first valve plate 12 is arranged between the first seat body 112 and the second seat body 113 .

[0081] Furthermore, the first valve plate 12 can move between the first seat body 112 and the second seat body 113 to shield the first valve hole 111 through the first valve plate 12. Figure 2The first base body 112 and the second base body 113 are spaced apart along the first direction, and the first base body 112 and the second base body 113 are connected by a support rod, that is, the positions of the first base body 112 and the second base body 113 are fixed.

[0082] like Figure 3 As shown, in a further embodiment of the present application, the second seat body 113 is provided with a guide groove 1131 arranged along the first direction, and the surface of the first valve plate 12 opposite to the second seat body 113 is connected to a guide rod 121, and the guide rod 121 is plugged into the guide groove 1131 to guide the movement direction of the first valve plate 12.

[0083] It is understood that the second seat 113 is used to cooperate with the first valve plate 12 to guide the movement direction of the first valve plate 12. The airflow entering the pipeline structure 200 through the air filter can drive the first valve plate 12 to move toward the second seat 113. Under the cooperation of the guide groove 1131 and the guide rod 121, the first valve plate 12 can move along the first direction toward the second seat 113, which can improve the stability of the movement of the first valve plate 12.

[0084] like Figure 2 As shown, in some embodiments of the present application, the pressure regulating valve 1 also includes a first elastic member 13, which is elastically supported between the second seat body 113 and the first valve plate 12, and the first elastic member 13 can store energy when the first valve plate 12 moves along the first direction toward the side of the second seat body 113.

[0085] Reference Figure 1 and Figure 2 It can be seen that in the pressure regulating valve 1, the first elastic member 13 can apply a driving force to the first valve plate 12 along the first direction away from the second seat body 113, so as to keep the first valve plate 12 in a position suitable for covering the first valve port, close the first valve port, and ensure that the gas passes through the first seat body 112 through the jet hole 114 when the air intake volume is small.

[0086] When the engine's intake volume is large, that is, when the airflow overcomes the elastic force applied by the first elastic member 13 and drives the first valve plate 12 to move in the first direction toward the second seat body 113, the first valve plate 12 opens. At this time, gas can pass through the first seat body 112 via the first valve hole 111 and the jet hole 114. As the first valve plate 12 moves toward the second seat body 113, the energy stored in the first elastic member 13 gradually increases. Under the action of the first elastic member 13, the opening of the first valve plate 12 can be adjusted in real time according to changes in the intake volume. The first elastic member 13 can also be used to reset the first valve plate 12 to a position where it presses against the first seat body 112, i.e., a position where the first valve hole 111 is closed.

[0087] In some embodiments, the first elastic member 13 is constructed as a spring, the spring is mounted on the guide rod 121, and the two ends of the spring are respectively connected to the second seat body 113 and the first valve plate 12. The connection method is simple and reliable, and can be used to achieve the reset of the first valve plate 12.

[0088] like Figure 2 As shown, in some embodiments of the present application, the first base 112 is provided with a conical platform 1121, which forms the jet hole 114. The cross-sectional area of the conical platform 1121 decreases gradually in the first direction toward the second base 113. Therefore, the jet hole 114, whose air intake cross-section decreases along the first direction, can be formed on the conical platform 1121. The provision of the conical platform 1121 can ensure the structural strength of the jet hole 114.

[0089] In some embodiments of the present application, the first seat body 112 can be fixed in the pipeline structure 200 by vibration friction welding, so that the first valve body 11 is assembled with the pipeline structure 200 through the first seat body 112, and the assembly method is simple and reliable.

[0090] In other embodiments of the present application, the first valve body 11 can also be fixed to the pipeline structure 200 by a snap-fit structure, which makes the assembly method simple and highly reliable.

[0091] Therefore, according to the pressure regulating device 100 of the embodiment of the present application, a negative pressure source can be formed on the side where the pipeline structure 200 is connected to the crankcase through the jet hole 114, thereby realizing negative pressure in the crankcase, and when the engine is in a high-speed and high-load working condition, the gas flow rate can be controlled through the first valve plate 12, and under the action of the pressure drop of the air filter itself, it can ensure that the negative pressure source on the side where the crankcase is connected to the pipeline structure 200 is sufficient, thereby realizing negative pressure in the crankcase.

[0092] like Figure 6 and Figure 7 As shown, in some embodiments of the present application, the pressure regulating valve 1 includes: a second valve body 21 and a second valve plate 22 .

[0093] Specifically, the second valve body 21 is fixed in the pipeline structure 200, and the second valve body 21 is provided with a second valve hole 211 and a third valve hole 212 which are arranged through along the first direction. The second valve plate 22 is rotatably arranged in the second valve hole 211 around the first axis, and the second valve plate 22 can define a throttling portion with the hole wall of the second valve hole 211.

[0094] Combine Figure 6 and Figure 8As can be seen, a second valve hole 211 and a third valve hole 212 are formed in the second valve body 21, both of which are used to allow air to pass through. A second valve plate 22 is disposed in the second valve hole 211, and the second valve plate 22 can be used to block the second valve hole 211. When the second valve plate 22 rotates relative to the second valve body, a throttling portion is defined by the second valve plate 22 and the wall of the second valve hole 211 to increase the gas flow rate through the second valve body 21, forming a negative pressure source on the outlet side of the second valve body 21, thereby achieving negative crankcase pressure.

[0095] It should be noted that after the gas enters the pipeline structure 200, it needs to flow through the second valve body 21 before it can further flow to the engine side, and the connection area between the pipeline structure 200 and the air filter side through the second connecting end 202 is larger than the flow area for gas to pass through formed by the second valve hole 211 and the third valve hole 212. Therefore, when the second valve plate 22 is not opened, the gas only flows from the third valve hole 212 to the engine side, which can reduce the flow area of the gas in the process of flowing through the second valve body 21, thereby increasing the gas flow rate, thereby forming a negative pressure on the side where the pipeline structure 200 is connected to the crankcase.

[0096] In some embodiments of the present application, in the first direction, the opening cross-sectional size of the third valve hole 212 gradually decreases from the air inlet side to the air outlet side, so that the third valve hole 212 can be constructed as a ventilation structure that conforms to the Venturi effect. After the gas flows through the third valve hole 212, the flow velocity increases, and a negative pressure source is formed on the exhaust side of the second valve body 21.

[0097] like Figure 10 As shown, in some embodiments of the present application, the pressure regulating valve 1 also includes a first rotating shaft 23, the second valve plate 22 is rotatably installed in the second valve hole 211 through a first rotation, and the second rotating shaft 34 can rotate around the central axis (i.e., the first axis) of the first rotating shaft 23.

[0098] Reference Figure 10 The first rotating shaft 23 can be passed through the second valve plate 22, and both ends of the first rotating shaft 23 can be plugged into the wall of the second valve hole 211 by plugging. The installation method is simple and reliable.

[0099] Combine Figure 8 and Figure 11 In some embodiments of the present application, the second valve plate 22 includes a first plate segment 221 and a second plate segment 222. The first plate segment 221 is located on one radial side of the first axis, and the second plate segment 222 is connected to the first plate segment 221 and is located on the other radial side of the first axis.

[0100] Furthermore, the second plate segment 222 can be rotated about the first axis toward the outlet side of the second valve hole 211, and a throttling portion is defined between the second plate segment 222 and the wall of the second valve hole 211, i.e., a ventilation structure with a decreasing flow area. As gas flows through the ventilation structure formed between the second plate segment 222 and the second valve hole 211, the flow rate of the gas gradually increases due to the decreasing flow area of the ventilation structure. This increases the gas flow rate and creates a negative pressure source on the outlet side of the second valve body 21, thereby achieving negative crankcase pressure.

[0101] It is understandable that when the gas on the air filter side flows into the pipeline structure 200, driven by the airflow, the second valve plate 22 can flip around the first axis to drive the second plate segment 222 to flip toward the outlet side of the second valve body 21 through the airflow.

[0102] like Figure 6 As shown, in some embodiments of the present application, the second valve body 21 includes: a third seat body 213 and a fourth seat body 214, the third seat body 213 forms the above-mentioned second valve hole 211 and the third valve hole 212, and the third seat body 213 is fixedly connected to the pipeline structure 200, and the gas entering the pipeline structure 200 through the second connecting end 202 needs to enter the side of the pipeline structure 200 connected to the crankcase after flowing through the second valve hole 211 and the third valve hole 212.

[0103] Furthermore, the fourth seat body 214 is arranged on the outlet side of the second valve hole 211 and the third valve hole 212, and the fourth seat body 214 and the third seat body 213 are spaced apart in the first direction, and a second elastic member 24 is connected between the fourth seat body 214 and the first plate segment 221. The second elastic member 24 can store energy when the first plate segment 221 flips around the first axis toward the air inlet side of the second valve hole 211, and is used to drive the second valve plate 22 to reset.

[0104] It is understood that the second elastic member 24 is connected between the fourth seat 214 and the first plate segment 221, and is adapted to exert a pulling force on the first plate segment 221 to tilt it toward the outlet side. When the second valve plate 22 tilts under the influence of airflow, the first plate segment 221 tilts toward the air inlet side, and the second plate segment 222 tilts toward the outlet side. As the tilting angle of the second valve plate 22 increases, the energy stored in the second elastic member 24 gradually increases, thereby enabling the tilting angle of the second valve plate 22 (and thus the ventilation structure area defined by the second valve plate 22 and the second valve hole 211) to be adjusted in real time according to the intake volume.

[0105] The second elastic member 24 can be configured as a tension spring, one end of which is connected to the fourth base 214, and the other end of which is connected to the first plate segment 221, so that the tension spring applies tension to the first plate segment 221. It is understood that the tension spring can be connected to the first plate segment 221 or the fourth base 214 via a spring clip 2211.

[0106] In some embodiments of the present application, a limiting protrusion (not shown) is further provided in the second valve hole 211, and the limiting protrusion protrudes from the wall surface of the second valve hole 211 toward the side of the second valve plate 22 (that is, toward the center side of the second valve hole 211), and the limiting protrusion is provided on the side of the second plate segment 222 away from the fourth seat body 214. The limiting protrusion can abut and cooperate with the intake side surface of the second plate segment 222 to limit the second plate segment 222 from flipping toward the intake side.

[0107] It can be understood that the second elastic member 24 can apply a pulling force to the first plate segment 221 to flip it toward the air outlet side, and at the same time, the second plate segment 222 has a movement tendency to flip toward the air inlet side. By cooperating with the limiting protrusion and the second plate segment 222, the second valve plate 22 can be positioned in the second valve hole 211, so that the second valve plate 22 can be maintained in a position suitable for relative to the airflow, such as: the second valve plate 22 is set perpendicular to the first direction, etc.

[0108] like Figure 8 and Figure 9 As shown, in some embodiments of the present application, a limiting portion 231 is provided in the second valve hole 211, and the limiting portion 231 cooperates with the second valve plate 22 to limit the axial movement of the second valve plate 22 along the first axis, thereby improving the movement stability of the second valve plate 22.

[0109] It can be understood that in order to ensure the reliability of the rotation process of the second valve plate 22 around the first axis, the second valve plate 22 is matched with the hole wall clearance of the second valve hole 211 in the circumferential direction to reserve a certain space between the second valve plate 22 and the second valve hole 211 to prevent the valve plate from interfering with the wall of the second valve hole 211 during the rotation process.

[0110] Furthermore, the first rotating shaft 23 passes through the second valve plate 22 and is plugged into the wall of the second valve hole 211. A stopper 231 is provided to limit the second valve plate 22 in the axial direction of the first rotating shaft 23, thereby preventing the second valve plate 22 from sliding along the axial direction of the first axis relative to the first rotating shaft 23. In other words, the second valve plate 22 can only rotate about the first axis within the second valve hole 211, thereby ensuring stability during the flipping process of the second valve plate 22.

[0111] like Figure 11As shown, in some embodiments of the present application, the thickness of the second plate segment 222 is gradually reduced toward the side away from the first plate segment 221, thereby reducing the weight of one side of the second plate segment 222, so that the weight of the second plate segment 222 can be less than the weight of the first plate segment 221, so that the second plate segment 222 can flip toward the air outlet side under the drive of the airflow.

[0112] It can be understood that the cross-sectional thickness of the second plate segment 222 gradually decreases from the end where the second plate segment 222 is connected to the first plate segment 221 to the side away from the first plate segment 221. Therefore, when the material of the second valve plate 22 is consistent, the weight of the second plate segment 222 can be lighter than that of the first valve plate 12. Compared with the first plate segment 221, the side of the second plate segment 222 with a smaller mass will preferentially flip along the direction of gas flow.

[0113] Further, refer to Figure 11 The inlet-side surface of the second plate segment 222 is configured as an inclined surface, thereby increasing the contact area between the second plate segment 222 and the gas, making it easier for the second plate segment 222 to flip along the gas flow direction than the first plate segment 221. It should be noted that the inlet-side surface of the second plate segment 222 is not limited to an inclined surface and can also be a curved surface.

[0114] like Figure 11 As shown, in some embodiments of the present application, the first plate segment 221 is constructed as a plate structure of equal thickness, so that the weight of the first plate segment 221 can be greater than the weight of the second plate segment 222, and the second plate segment 222 is easier to flip along the flow direction of the gas.

[0115] In some embodiments, the weight of the first plate segment 221 is greater than that of the second plate segment 222 , so that the second plate segment 222 will flip along the gas flow direction, ie, flip toward the gas outlet side, before the first plate segment 221 .

[0116] like Figure 8 As shown, in some embodiments of the present application, the opening area of the second valve hole 211 is larger than the opening area of the third valve hole 212. The "opening area" refers to the communication area between the valve hole structure and the pipeline structure 200.

[0117] Further integration Figure 9 The opening size of the second valve hole 211 at each position in the first direction is consistent, and the opening size of the third valve hole 212 at each position in the first direction is consistent.

[0118] like Figure 8As shown, in some embodiments of the present application, there are multiple second valve holes 211, and the multiple second valve holes 211 are evenly arranged circumferentially around the central axis of the third seat body 213. The third seat body 213 is provided with multiple third valve holes 212, each of which is arranged between two adjacent second valve holes 211 and adjacent to the outer peripheral wall of the third seat body 213.

[0119] like Figures 12-18 As shown, in some embodiments of the present application, the pressure regulating valve 1 includes a third valve body 31 and a third valve plate 32 .

[0120] Among them, the third valve body 31 is fixed in the pipeline structure 200, and the third valve body 31 is formed with a fourth valve hole 311 arranged through along the first direction. The fourth valve hole 311 can be used for gas to flow in and out, and the air inlet side of the fourth valve hole 311 is connected to the port formed by the second connecting end 202 of the pipeline structure 200.

[0121] Furthermore, the third valve plate 32 is rotatably disposed in the third valve body 31 around the second axis, and the third valve plate 32 and the hole wall of the fourth valve hole 311 define a throttling portion. Figure 12 A ventilation structure is defined between the third valve plate 32 and the hole wall of the fourth valve hole 311 , and the gas entering the fourth valve hole 311 can flow to the gas outlet side of the fourth valve hole 311 through the ventilation structure.

[0122] Among them, the flow area of the ventilation structure defined by the wall of the third valve plate 32 and the fourth valve hole 311 gradually decreases, so that the ventilation structure conforming to the Venturi effect is formed by the cooperation between the third valve plate 32 and the hole wall of the fourth valve hole 311. When the gas flows through the third valve plate 32, the flow velocity of the gas increases, and a negative pressure source can be formed on the outlet side of the fourth valve hole 311 to achieve negative pressure in the crankcase.

[0123] In some embodiments of the present application, the pressure regulating valve 1 further includes a second rotating shaft 34, which is connected to the third valve plate 32. Both ends of the second rotating shaft 34 are pluggably engaged with the third valve body 31 to rotatably mount the third valve plate 32 on the third valve body 31. The second rotating shaft 34 is disposed in the middle of the third valve plate 32, and in projection along the thickness direction of the third valve plate 32, the second rotating shaft 34 can divide the third valve plate 32 into two equal parts.

[0124] like Figure 12As shown, in a further embodiment of the present application, the third valve plate 32 includes a third plate segment 321 and a fourth plate segment 322. The third plate segment 321 is located on one radial side of the second axis, and the fourth plate segment 322 is connected to the third plate segment 321 and located on the other radial side of the second axis. The third plate segment 321 can be rotated about the second axis toward the outlet side of the fourth valve hole 311, and defines a throttling portion with the wall of the fourth valve hole 311.

[0125] Further integration Figure 18 It can be seen that when the pressure regulating valve 1 is installed in the pipeline structure 200, the third plate section 321 is located on the upper side of the fourth plate section 322, and a ventilation structure with a flow area gradually decreasing toward the outlet side is formed between the side surface of the third plate section 321 opposite to the air inlet side of the fourth valve hole 311 and the hole wall of the fourth valve hole 311, thereby forming a throttling portion through the cooperation of the third valve plate 32 and the third valve body 31.

[0126] It should be noted that in order to ensure the rotation reliability of the third valve plate 32 relative to the third valve body 31, a clearance fit is provided between the third valve plate 32 and the hole wall of the fourth valve hole 311 to prevent interference between the third valve plate 32 and the hole wall of the fourth valve hole 311 during rotation.

[0127] like Figure 12 and Figure 16 As shown, in some embodiments of the present application, the pressure regulating valve 1 further includes a counterweight 33, which is arranged on the gas outlet side surface of the fourth plate segment 322, and the counterweight 33 maintains the third valve plate 32 in a position inclined relative to the first direction when no gas passes through the fourth valve hole 311.

[0128] Therefore, when the engine is not running, the center of gravity of the third valve plate 32 is offset under the action of the counterweight 33, that is, the weight of the third valve plate 32 on the side of the fourth plate segment 322 is greater than the weight on the side of the third plate segment 321, so that the third valve plate 32 can present a certain angle with the vertical plane in the initial state, which is conducive to the third valve plate 32 flipping toward the outlet side of the fourth valve hole 311 under the impact of gas to further open.

[0129] It can be understood that when the counterweight 33 is arranged on the outlet side surface of the fourth plate segment 322, the center of the fourth plate segment 322 is located on the second axis close to the outlet side, so that the third plate segment 321 can be flipped toward the outlet side while the fourth plate segment 322 is flipped toward the inlet side.

[0130] like Figure 12 and Figure 18As shown, in some embodiments of the present application, a first limiting portion 312 is provided in the hole wall of the fourth valve hole 311, and the first limiting portion 312 is used to limit and cooperate with the surface of the side of the third plate segment 321 opposite to the air intake side of the fourth valve hole 311 to prevent the third plate segment 321 from flipping toward the air intake side.

[0131] like Figure 12 and Figure 18 As shown, in some embodiments of the present application, a second limiting portion 313 is provided in the hole wall of the fourth valve hole 311, and the second limiting portion 313 is used to cooperate with the surface of the side of the third plate segment 321 opposite to the air outlet side of the fourth valve hole 311 to limit the flipping angle of the third plate segment 321 from being too large.

[0132] It can be understood that the first limiting portion 312 and the second limiting portion 313 can limit the flipping angle of the third valve plate 32 .

[0133] In some embodiments, the first limiting portion 312 and the second limiting portion 313 can each be configured as a protruding structure that protrudes inward from the inner wall of the fourth valve hole 311 and is adapted to abut against the third valve plate 32 when the third valve plate 32 rotates to a predetermined angle. Preferably, the second limiting portion 313 can restrict the third valve plate 32 to a position parallel to the first direction, thereby maintaining the third valve plate 32 in the maximum open position.

[0134] Among them, when the engine is in a low-speed and high-load operating condition, the engine's intake volume is small, and the torque of the airflow on the third valve plate 32 is insufficient to overcome the axial gravity torque applied by the counterweight 33, so that the third valve plate 32 can be maintained at a smaller opening, and the cross-sectional area of the ventilation structure formed between the third valve plate 32 and the hole wall of the fourth valve hole 311 gradually decreases toward the outlet side. After the airflow passes through the third valve plate 32, a negative pressure source can be formed on the outlet side of the pressure regulating valve 1; when the engine is in a high-speed and high-load operating condition, the engine's intake volume is large, and under the action of the airflow, the axial gravity torque applied by the counterweight 33 of the third valve plate 32 can be overcome, and under the action of the second limit part 313, the third valve plate 32 is parallel to the gas flow direction, that is, the third valve plate 32 is in a fully open state.

[0135] like Figure 18 As shown, in some embodiments of the present application, the outer peripheral wall of the third valve body 31 is arranged to fit the inner peripheral wall of the pipeline structure 200, so that the gas flowing into the pipeline structure 200 through the second connection end 202 can all flow into the third valve body 31, ensuring the air intake effect at the third valve body 31.

[0136] The third valve body 31 may be embedded in the pipeline structure 200 by means of interference fit or snap fit.

[0137] According to the pressure regulating device 100 of the embodiment of the present application, when the engine is operating in the low-speed, high-load range, even if the engine intake volume is small, a negative pressure can be formed on the outlet side of the pressure regulating device 100, preventing the crankcase pressure from becoming positive, thereby achieving a negative full MAP crankcase pressure. "Full MAP" refers to the crankcase being in a negative pressure state throughout the entire engine operating range (including speed, load, etc.).

[0138] According to the vehicle of the embodiment of the present application, the vehicle includes the above-mentioned pressure regulating device 100. The pressure regulating device 100 can form a negative pressure source on the side where the pipeline structure 200 is connected to the crankcase by adjusting the gas flow rate, thereby achieving negative pressure in the crankcase.

[0139] 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.

[0140] In the description of this application, "first feature" and "second feature" may include one or more of the features.

[0141] In the description of this application, “plurality” means two or more.

[0142] In the description of the present application, a first feature being “on” or “under” a second feature may include the first and second features being in direct contact with each other, or the first and second features being in contact with each other not directly but via another feature therebetween.

[0143] In the description of this application, a first feature “on”, “above” and “above” a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0144] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," 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. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0145] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A pressure regulating device, characterized in that: include: A pipeline structure (200), wherein the pipeline structure (200) is connected between the crankcase, the air filter and the intake side of the engine; A pressure regulating valve (1) is provided in the pipeline structure (200), and the pressure regulating valve (1) is provided with a throttling portion, wherein the air inlet area of the throttling portion is S1, the air outlet area of the throttling portion is S2, and S1>S2, so that a negative pressure source is formed on the connecting side between the crankcase and the pipeline structure (200) when the gas flows through the throttling portion.

2. The pressure regulating device according to claim 1, characterized in that: The pressure regulating valve (1) comprises: a first valve body (11), the first valve body (11) being fixed in the pipeline structure (200), and the first valve body (11) being provided with the throttling portion and the first valve hole (111); A first valve plate (12) is disposed opposite to the first valve hole (111), and the first valve plate (12) can move relative to the first valve body (11) along a first direction to selectively open the first valve hole (111).

3. The pressure regulating device according to claim 2, characterized in that: The throttling portion is configured as a jet hole (114), the jet hole (114) is arranged through along the first direction, and the opening cross-sectional size of the jet hole (114) is arranged to decrease from the air inlet side to the air outlet side.

4. The pressure regulating device according to claim 3, characterized in that: There are a plurality of jet holes (114), and the plurality of jet holes (114) are arranged circumferentially around the outer side of the first valve hole (111).

5. The pressure regulating device according to claim 3, characterized in that: The first valve body (11) comprises: a first seat body (112), wherein the first seat body (112) forms the first valve hole (111) and the jet hole (114); A second seat body (113) is connected to the first seat body (112) and is arranged on the air outlet side of the first valve hole (111), and the first valve plate (12) is arranged between the first seat body (112) and the second seat body (113).

6. The pressure regulating device according to claim 5, characterized in that: The first seat (112) is provided with a conical platform (1121), the conical platform (1121) forms the jet hole (114), and the cross-sectional area of the conical platform (1121) is gradually reduced toward the second seat (113) in the first direction.

7. The pressure regulating device according to claim 5, characterized in that: The second seat body (113) is provided with a guide groove (1131) arranged along the first direction, and a guide rod (121) is connected to the surface of the first valve plate (12) on the side opposite to the second seat body (113), and the guide rod (121) is plugged into and matched with the guide groove (1131).

8. The pressure regulating device according to claim 7, characterized in that: The pressure regulating valve (1) further comprises a first elastic member (13), wherein the first elastic member (13) is elastically supported between the second seat body (113) and the first valve plate (12), and the first elastic member (13) is suitable for storing energy when the first valve plate (12) moves toward the side of the second seat body (113) along the first direction.

9. The pressure regulating device according to claim 1, characterized in that: The pressure regulating valve (1) comprises: a second valve body (21), the second valve body (21) being fixed in the pipeline structure (200), and the second valve body (21) being provided with a second valve hole (211) and a third valve hole (212) penetratingly arranged along a first direction; The second valve plate (22) is rotatably disposed in the second valve hole (211) around a first axis, and the second valve plate (22) can define the throttling portion together with the hole wall of the second valve hole (211).

10. The pressure regulating device according to claim 9, characterized in that: The second valve plate (22) comprises: a first plate segment (221), the first plate segment (221) being located on one radial side of the first axis; a second plate segment (222), the second plate segment (222) being connected to the first plate segment (221) and being located on the other radial side of the first axis; The second plate section (222) can be turned around the first axis toward the gas outlet side of the second valve hole (211), and define the throttling portion together with the hole wall of the second valve hole (211).

11. The pressure regulating device according to claim 10, characterized in that: The thickness of the second plate section (222) is gradually reduced toward the side away from the first plate section (221); And / or, the mass of the second plate segment (222) is lighter than the mass of the first plate segment (221).

12. The pressure regulating device according to claim 10, characterized in that: The second valve body (21) comprises: a third seat body (213), wherein the third seat body (213) forms the second valve hole (211) and the third valve hole (212); A fourth seat body (214), the fourth seat body (214) is arranged on the outlet side of the second valve hole (211) and the third valve hole (212), and is spaced apart from the third seat body (213) in the first direction, and a second elastic member (24) is connected between the fourth seat body (214) and the first plate segment (221), and the second elastic member (24) is suitable for storing energy when the first plate segment (221) flips around the first axis toward the inlet side of the second valve hole (211).

13. The pressure regulating device according to claim 10, characterized in that A limiting portion (231) is provided in the second valve hole (211), and the limiting portion (231) cooperates with the second valve plate (22) to limit the movement of the second valve plate (22) along the axial direction of the first axis.

14. The pressure regulating device according to claim 1, characterized in that The pressure regulating valve (1) comprises: a third valve body (31), the third valve body (31) being fixed in the pipeline structure (200), and the third valve body (31) being formed with a fourth valve hole (311) extending through the third valve body along the first direction; A third valve plate (32) is rotatably disposed in the third valve body (31) around a second axis, and the third valve plate (32) and the hole wall of the fourth valve hole (311) define the throttling portion.

15. The pressure regulating device according to claim 14, characterized in that The third valve plate (32) comprises: a third plate segment (321), the third plate segment (321) being located on one radial side of the second axis; a fourth plate segment (322), the fourth plate segment (322) being connected to the third plate segment (321) and being located on the other radial side of the second axis; The third plate segment (321) can be turned around the second axis toward the gas outlet side of the fourth valve hole (311), and define the throttling portion together with the hole wall of the fourth valve hole (311).

16. The pressure regulating device according to claim 15, characterized in that The pressure regulating valve (1) further comprises a counterweight (33), which is arranged on the gas outlet side surface of the fourth plate section (322) and is suitable for maintaining the third valve plate (32) in a position inclined relative to the first direction when no gas passes through the fourth valve hole (311).

17. The pressure regulating device according to claim 15, characterized in that A first limiting portion (312) is provided in the hole wall of the fourth valve hole (311), and the first limiting portion (312) is used to cooperate with the surface of the third plate segment (321) on the side opposite to the air inlet side of the fourth valve hole (311) in a limiting manner; And / or, a second limiting portion (313) is provided in the hole wall of the fourth valve hole (311), and the second limiting portion (313) is used to cooperate with the surface of the side of the third plate section (321) opposite to the air outlet side of the fourth valve hole (311) to limit the position.

18. A vehicle, characterized in that: Comprising a pressure regulating device according to any one of claims 1-17.

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