Valve components and displacement adjustment system

Abstract

The present application provides a valve component and a displacement regulating system, which relates to the technical field of lubrication systems for internal combustion engines, including a containing component formed with a containing cavity, the containing cavity forming a third cavity located between a first cavity and a second cavity; the containing component forming a second hole portion for connecting the second cavity to the outside and a fourth hole portion for connecting the third cavity to the outside; in the first working state of the valve core assembly, when the valve core assembly can move from the first predetermined position to the second predetermined position, the second hole portion is connected to the fourth hole portion via the third cavity. The valve component provided by the present application is applied to the displacement regulating system to realize the secondary regulation of the displacement of the variable pump through the coordinated control of the control valve and the valve component, which has a faster response speed than the traditional dual-regulating cavity variable pump and a stable variable control. In addition, the pressure curve output by the displacement regulating system is more suitable for the needs of the engine, ensuring the stability of the output curve of the variable pump controlled by the high pressure.

Description

Technical Field

[0001] The present application relates to the technical field of lubrication systems for internal combustion engines, and in particular to a valve component and a displacement regulating system. Background Art

[0002] The oil pump continuously supplies pressurized lubricating oil to the friction parts of the entire engine. If the oil pump does not supply enough oil, the engine will lack sufficient lubrication pressure, causing serious wear of the engine. However, if the oil supply is kept very high, it will inevitably increase the internal loss of the engine and cause unnecessary waste.

[0003] In the prior art, a variable displacement oil pump is used to solve the above problems. The variable displacement oil pump can adjust its own oil discharge according to the engine speed and the feedback oil pressure of the lubrication system. Taking the vane oil pump with adjustable displacement as an example, when the feedback oil pressure reaches the preset pressure value, the spring built into the vane oil pump is compressed, forcing the adjustment ring to swing, so that the eccentricity between the rotor and the adjustment ring becomes smaller, and the pressure oil cavity formed by the vane and the cavity decreases during the operation of the oil pump, and the oil flow rate of the oil pump also decreases accordingly; when the feedback oil pressure decreases, the spring gradually returns to its position to reset the adjustment ring.

[0004] However, it is difficult to ensure that the pressure curve output by the variable oil pump meets the needs of the engine only by using the above variable oil pump, and it is easy to have a sudden change in output pressure. In addition, when only relying on the variable oil pump to adjust the output pressure according to the feedback oil pressure, the response speed is relatively slow. Summary of the invention

[0005] In view of this, the present application provides a valve component and a displacement adjustment system, the purpose of which is to solve the above technical problems to a certain extent.

[0006] In a first aspect, the present application provides a valve component, the valve component comprising:

[0007] A containing member, formed with a containing cavity;

[0008] A valve core assembly is disposed in the accommodating cavity, so that the accommodating cavity is divided into a first chamber and a second chamber by the valve core assembly;

[0009] The accommodating cavity is further formed with a third chamber located between the first chamber and the second chamber;

[0010] The accommodating member is formed with a second hole portion for connecting the second chamber to the outside and a fourth hole portion for connecting the third chamber to the outside; the valve core assembly is located at a first predetermined position in an initial state;

[0011] In the first working state of the valve core assembly, the valve core assembly can move from the first predetermined position to gradually occupy the second chamber, and when the valve core assembly moves to the second predetermined position, the second hole portion is connected to the fourth hole portion via the third chamber.

[0012] Preferably, a third chamber is defined by part of the valve core assembly and part of the accommodating member, and the accommodating member is further formed with a third hole portion for connecting the second chamber to the outside and a first hole portion for connecting the first chamber to the outside, and a medium can enter the first chamber through the first hole portion, so that the valve core assembly is converted from the initial state to the first working state;

[0013] In the second working state of the valve core assembly, the medium can enter the third chamber through the fourth hole portion, and the valve core assembly moves from the first predetermined position to gradually occupy the second chamber. When the valve core assembly moves to the second predetermined position, the second hole portion is connected to the fourth hole portion via the third chamber.

[0014] Preferably, the valve core assembly moves in a first posture in the first working state, and moves in a second posture in the second working state.

[0015] Preferably, the valve core assembly comprises:

[0016] a first valve core member and a second valve core member, a portion of the first valve core member, a portion of the second valve core member and a portion of the receiving member together defining a third chamber;

[0017] When the valve core assembly moves in the first posture, the first valve core component and the second valve core component move together;

[0018] When the valve core assembly moves in the second posture, only the second valve core component moves.

[0019] Preferably, two ends of the accommodating cavity in the direction of movement of the valve core assembly are respectively defined as a first end of the accommodating cavity and a second end of the accommodating cavity;

[0020] A stop portion is formed on the inner side of the accommodating cavity. In the initial state, the first valve core component cooperates with the stop portion so that further movement of the first valve core component toward the first end of the accommodating cavity is prevented, and the first chamber in the initial state is defined between the first end of the accommodating cavity and the first valve core component.

[0021] Preferably, a direction from the first end of the accommodating cavity to the second end of the accommodating cavity is defined as a first direction;

[0022] The first valve core component includes a first step portion and a second step portion connected to each other, the first step portion is closer to the first end of the accommodating cavity relative to the second step portion;

[0023] The second valve core member includes a third step portion, the third step portion is formed with a barrel portion, and the barrel portion is sleeved on the outer side of a portion of the second step portion;

[0024] A cutout portion is formed in the outer portion of the third step portion from one end of the third step portion close to the first valve core member along the first direction, occupying a portion of the outer portion of the third step portion;

[0025] The third chamber is defined by an end of the first step portion facing away from the first end of the accommodating cavity, an end of the third step portion close to the first step portion, an outer side of the notched portion, and an inner side of the accommodating cavity.

[0026] Preferably, the first step portion and the second step portion are both formed in a cylindrical shape, and the portion of the second step portion sleeved by the barrel portion forms a clearance fit with the barrel portion;

[0027] The second valve core component is formed with a flow guide channel, and when the valve core component moves in the second posture, the space defined by the barrel and the second step portion is communicated with the second chamber via the flow guide channel;

[0028] The second valve core component further includes a fourth step portion and a fifth step portion, wherein the third step portion, the fourth step portion and the fifth step portion are sequentially connected and are away from the first valve core component;

[0029] The second chamber is defined by the end of the third step portion facing away from the first valve core member, the fourth step portion and the fifth step portion, the second end of the accommodating cavity and the inner side of the accommodating cavity.

[0030] A reset component is arranged between one of the third step portion, the fourth step portion and the fifth step portion and the second end of the accommodating cavity, and the reset component is used to make the second valve core component produce a movement tendency so that the valve core assembly can be reset to an initial state from the first working state and the second working state.

[0031] In a second aspect, the present application provides a displacement regulating system, comprising the valve component as described above.

[0032] Preferably, the displacement regulating system is used to regulate the displacement of the medium output to the device to be supplied, and the displacement regulating system further comprises:

[0033] Control valves;

[0034] A pump component is formed with a regulating chamber, an input chamber and an output chamber, and when the pressure of the medium in the regulating chamber increases, the pressure of the medium output by the output chamber decreases;

[0035] A medium source, used for providing and receiving the medium;

[0036] The medium flows from the medium source into the input chamber via a first path, and flows from the output chamber into the device to be supplied via a second path at a higher pressure, and the medium in the device to be supplied flows into the medium source via a third path;

[0037] The regulating chamber is in communication with the second chamber via a fourth path and the second hole portion in sequence;

[0038] The second chamber is connected to the medium source via the third hole and the fifth path in sequence;

[0039] The second path is connected to the fourth hole portion via a sixth path;

[0040] The first chamber is connected to the control valve via the first hole and the seventh path in sequence, so that when the control valve is in the first control position, the seventh path is connected to the second path via the eighth path, and when the control valve is in the second control position, the seventh path is connected to the medium source via the ninth path.

[0041] Preferably, the second path is also connected to the medium source via a tenth path, a safety valve component is provided on the tenth path, and when the medium in the second path exceeds the safety pressure, the safety valve component conducts the tenth path; a filter component is also provided on the second path;

[0042] The control valve is formed as a solenoid valve, the medium is formed as engine oil, the medium source is formed as an oil pan, the device to be supplied is formed as an engine, and the pump member is formed as a vane oil pump.

[0043] The valve member provided by the present application is applied to the displacement regulation system to realize the secondary regulation of the displacement of the variable pump through the coordinated control of the control valve and the valve member. It has a faster response speed and a smooth variable control than the traditional double-regulating chamber variable pump. In addition, the pressure curve output by the displacement regulation system is more suitable for the needs of the engine, ensuring that the output curve of the variable pump controlled by high pressure is stable. Therefore, to a certain extent, it solves the problem that it is difficult to ensure that the pressure curve output by the variable oil pump meets the needs of the engine, and it is easy to have a sudden change in output pressure. In addition, when the output pressure is adjusted by the variable oil pump based on the feedback oil pressure, the response speed is relatively slow.

[0044] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0046] Figure 1 A schematic diagram showing the displacement regulating system of the present application when the valve component is in an initial state;

[0047] Figure 2 A schematic diagram showing the displacement regulating system of the present application when the valve component is in a first working state;

[0048] Figure 3 A schematic diagram showing the displacement regulating system of the present application when the valve component is in the second working state;

[0049] Figure 4 A schematic diagram showing a cross-sectional view of a valve component of the displacement regulating system of the present application is shown.

[0050] Reference numerals:

[0051] 100- variable vane pump; 110- adjusting ring spring; 210- adjusting ring; 220- vane; 230- rotor;

[0052] 2-filter; 3-solenoid valve; 4-fifth path; 5-oil pan; 6-engine; 11-first path; 11a-input chamber; 12-output path; 12a-output chamber; 13-fourth path; 13a-regulating chamber; 14-safety valve; 15-valve member; 151-low-pressure valve core member; 152-high-pressure valve core member; 152a-guiding channel; 155-return spring; 156-first chamber; 153-third chamber; 15a-third hole; 15b-second hole; 15c-first hole; 15d-fourth hole; 16-lubricating path;

[0053] 17-accommodating member; 18-first step portion; 19-second step portion; 20-third step portion; 21-fourth step portion; 22-fifth step portion; 23-first annular space; 24-second annular space;

[0054] 25 - the third path; 26 - the sixth path; 27 - the seventh path; 28 - the eighth path; 29 - the ninth path; 30 - the tenth path. DETAILED DESCRIPTION

[0055] The technical solution of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0056] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0057] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0058] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0059] The valve component provided in this embodiment includes a containing component and a valve core assembly, and the structures and working principles of the aforementioned components will be described in detail below.

[0060] In an embodiment, the receiving member 17 may be configured to be substantially cylindrical, and the receiving cavity is defined by the inner side of the receiving member 17 substantially formed into a cylindrical shape. The inner side of the receiving cavity may include two parts, see Figure 4 , the first part is located at Figure 4 The portion on the left side of the middle portion is defined by the cylindrical surface with a smaller diameter, and the chamber corresponding to this portion is the first chamber 156; the second portion is located at Figure 4 The portion defined by the cylindrical surface with a larger diameter on the right side of the middle portion includes the space for accommodating the valve core assembly and the second chamber. It can be seen that the connection between the first portion of the aforementioned accommodating chamber and the second portion of the accommodating chamber forms an annular limiting shoulder (corresponding to the stopper). In the initial state of the valve core assembly, the valve core assembly can contact the limiting shoulder, thereby preventing the valve core assembly from further moving toward the left side of the accommodating member 17. On this basis, the portion of the accommodating chamber located on the right side of the valve core assembly forms the second chamber.

[0061] The valve core assembly may include a first valve core component and a second valve core component. In order to facilitate comparative reference with the functions of the corresponding valve core components, the first valve core component is hereinafter referred to as the low-pressure valve core component 151, and the second valve core component is hereinafter referred to as the high-pressure valve core component 152. The structures of the two will be described in turn.

[0062] The low-pressure valve core component 151 can be formed into a stepped shaft shape, and can further include a first step portion 18 and a second step portion 19 which are axially connected to each other, and the first step portion 18 can have a larger diameter relative to the second step portion 19, so that the outer side of the first step portion 18 is adapted to the inner side of the second part of the accommodating cavity, and the second step portion 19 is used to cooperate with the high-pressure valve core component 152.

[0063] In the embodiment, still see Figure 4 , the high-pressure valve core member 152 can also be formed in a roughly stepped shaft shape, which can be defined as the third step portion 20, the fourth step portion 21 and the fifth step portion 22 from left to right. The third step portion 20 can be formed with a barrel portion, such as a cylindrical portion, which is open to the left. The axial direction of the cylindrical portion can be the same as the axial direction of the low-pressure valve core member 151 and can be sleeved on the outer side of the second step portion 19, thereby defining a first annular space 23 between the end of the cylindrical portion facing the first step portion 18 and the first step portion 18. The outer side of the third step portion 20 can be formed with a missing portion from the left end of the third step portion 20 to the right end of the third step portion 20, and the outer side of the missing portion and the inner side of the accommodating cavity define a second annular space 24. Obviously, the first annular space 23 and the second annular space 24 are connected to each other, and the two together form the third chamber 153.

[0064] The outer diameters of the fourth step portion 21 and the fifth step portion 22 can be reduced in sequence. As a preferred embodiment, the first end of the reset member, such as the reset spring 155, can be sleeved on the outer side of the fifth step portion 22 and abut against the right end of the fourth step portion 21, and the second end of the reset spring 155 can abut against the right end of the accommodating cavity. The spring here can be installed with a certain amount of compression. As a result, the elastic force of the spring forces the high-pressure valve core member 152 and the low-pressure valve core member 151 to always have a tendency to move to the left, which ensures that the valve core assembly can return to the initial state currently described from the first working state and the second working state described below.

[0065] On the basis of the features described above, a second chamber is formed between the right side of the high-pressure valve core member 152 and the right side of the accommodating cavity (i.e., the second chamber is defined by the right end of the third step portion 20, the fourth step portion 21 and the fifth step portion 22, the inner part of the accommodating cavity, and the right end of the accommodating cavity). On the basis of the above chamber arrangement, continue to refer to Figure 4 , the containing member 17 is also provided with a first hole portion 15c that allows the first chamber 156 to communicate with the external environment, a second hole portion 15b and a third hole portion 15a that allow the second chamber to communicate with the external environment, and a fourth hole portion 15d that allows the third chamber 153 to communicate with the external environment. In the embodiment, the first hole portion 15c, the second hole portion 15b and the fourth hole portion 15d can all be formed at the side of the containing member 17, and the third hole portion 15a can be formed at the end of the right side of the containing member 17. As mentioned in the above description, the valve core assembly includes a first working state and a second working state, wherein the first working state can correspond to a low pressure state of the lubricating oil pressure of the engine 6, hereinafter referred to as the low pressure working state, and similarly, the second working state can correspond to a high pressure state of the lubricating oil pressure of the engine 6, hereinafter referred to as the high pressure working state, and these two working states will be described in the displacement control system below.

[0066] This embodiment also provides a displacement regulating system, including the above valve component 15, and also includes a pump component for outputting engine oil, a filter 2, a medium source and a control valve. The structure and working principle of the above components will be described in detail below.

[0067] In an embodiment, the pump component can be formed as a variable displacement vane pump 100 in the prior art, which includes a rotor 230, the rotor 230 is provided with vanes 220 in the circumferential direction, and an adjustment ring 210 is provided around the outer side of the vanes 220, and the adjustment ring 210 is arranged eccentrically with the rotor 230. The left side of the adjustment ring 210 can be pivotally connected to the pump body of the variable displacement vane pump 100, so that it can swing within the paper, and this swinging motion is limited by the adjustment ring spring 110.

[0068] The above control valve can be formed as a solenoid valve 3, the medium source can be formed as an oil pan 5 of an engine 6, and the variable vane pump 100 may include an input chamber 11a, an output chamber 12a and an adjusting chamber 13a, wherein the engine oil can be input into the input chamber 11a via an input path (i.e., the first path 11), the engine oil is pressurized by the rotation of the rotor 230, a part of the engine oil is output from the output chamber 12a via the output path 12 (the first part of the second path) to the engine 6, the engine oil in the engine 6 flows into the oil pan 5 via the third path 25, and another part of the engine oil can flow into the second chamber via the fourth path 13 and the second hole portion 15b in sequence from the adjusting chamber 13a in the initial state of the valve core assembly.

[0069] On this basis, the second chamber can be connected to the oil pan 5 via the third hole portion 15a and the fifth path 4 in sequence, and the lubrication path 16 (i.e., the second part of the second path, connected to the output path 12) can be connected to the fourth hole portion 15d via the sixth path 26. The first chamber 156 can be connected to the control valve via the first hole portion 15c and the seventh path 27 in sequence, so that when the control valve is in the first control position, the seventh path 27 is connected to the lubrication path 16 via the eighth path 28, and when the control valve is in the second control position, the seventh path 27 is connected to the oil pan 5 via the ninth path 29.

[0070] Based on the above configuration, the working process of the displacement regulating system and the working state of the valve core assembly during this process will be described in detail below.

[0071] When the valve core assembly is in the initial state, the low-pressure valve core member 151 forms an abutment fit with the limiting shoulder, the cylinder of the high-pressure valve core member 152 is sleeved on the outer side of the second step portion 19, and the bottom of the cylinder of the high-pressure valve core member 152 abuts against the right end of the second step portion 19. In this case, the pressure oil output from the regulating chamber 13a of the variable vane pump 100 flows into the second chamber of the valve member 15 via the fourth path 13 and the second hole 15b, and the engine oil in the second chamber flows into the oil pan 5 via the third hole 15a and the fifth path 4, which is equivalent to the pressure oil output from the regulating chamber 13a flowing back to the oil pan 5 at a pressure close to zero. The pressure oil in the output chamber 12a flows into the engine 6 via the output path 12 and the lubrication path 16 in turn to participate in lubrication, and the engine oil in the engine 6 flows into the oil pan 5 via the third path 25.

[0072] When the control valve is in the first control position, Figure 2The P port shown in the figure is connected to the A port. At this time, the lubrication path 16, the eighth path 28, the seventh path 27 and the first chamber 156 are all connected. If the oil pressure in the lubrication path 16 is not enough to make the oil in the first chamber 156 drive the low-pressure valve core member 151, the valve core assembly will still be in the initial state (for example, Figure 1 On the contrary, if the oil pressure is sufficient to drive the low-pressure valve core component 151, the low-pressure valve core component 151 and the high-pressure valve core component 152 will be driven by the pressure oil in the first chamber 156 to move to the right (the movement posture of the valve core component is the first posture at this time), and the return spring 155 will be further compressed. This process is equivalent to the valve core component gradually occupying the second chamber, and the oil in the occupied space of the second chamber still flows out through the third hole 15a, and when the valve core component is moved from the position of the initial state (i.e. When the adjusting ring 150 moves rightward from the first predetermined position to the second predetermined position, the second annular space 24 of the third chamber 153 is connected with the second hole portion 15b, so that the pressure in the lubrication path 16 flows into the adjusting chamber 13a via the sixth path 26, the fourth hole portion 15d, the third chamber 153, the second hole portion 15b and the fourth path 13 in sequence, thereby forcing the adjusting ring to overcome the elastic force of the adjusting ring spring and change the eccentricity of the adjusting ring, thereby reducing the displacement and pressure of the output chamber 12a and the adjusting chamber 13a.

[0073] When the control valve is in the second control position, Figure 3 The T port shown in is connected with the A port, at this time, the lubrication path 16, the ninth path 29, the seventh path 27 and the first chamber 156 are all connected, and the first chamber 156 is equivalent to close to zero pressure, and the valve core assembly will be reset to the initial state. If the oil pressure in the lubrication path 16 is not enough to make the oil in the third chamber 153 drive the high-pressure valve core member 152, then the valve core assembly will still be in the initial state. On the contrary, if the oil pressure is enough to drive the high-pressure valve core member 152, then only the high-pressure valve core member 152 will be driven by the pressure oil in the third chamber 153 to move to the right (at this time, the movement posture of the valve core assembly is the second posture), which is equivalent to the high-pressure valve core member 152 gradually occupying the second chamber, and at the same time, a cavity will appear between the second step 19 of the low-pressure valve core member 151 and the barrel of the high-pressure valve core member 152. In order to ensure the smooth movement of the high-pressure valve core member 152, the high-pressure valve core member 152 is also provided with a guide channel 152a that connects the barrel with the second chamber to balance the pressure.

[0074] Under the above movement mode of the high-pressure valve core component 152, when the valve core assembly moves rightward from the position in the above-mentioned initial state (i.e., the first predetermined position) to the second predetermined position, the second annular space 24 of the above-mentioned third chamber 153 is connected with the second hole portion 15b, which will eventually force the adjusting ring to overcome the elastic force of the adjusting ring spring and change the eccentricity of the adjusting ring, thereby reducing the displacement and pressure of the output chamber 12a and the adjusting chamber 13a.

[0075] In the embodiment, in the initial state, the effective area of ​​the low-pressure valve core by the oil in the first chamber 156 is larger than the effective area of ​​the high-pressure valve core by the oil in the third chamber 153. Therefore, when facing the state of the high-pressure oil input valve component 15, it can still ensure that the force on the high-pressure valve core is not too large, and then it can ensure that the high-pressure valve core can move smoothly, thereby improving the applicability of the displacement regulation system.

[0076] In addition, the filter 2 can be arranged on the output path 12, and is used for filtering the oil before it enters the engine 6. The displacement regulating system further includes a tenth path 30, which can connect the output path 12 with the oil pan 5. A safety valve 14, such as a relief valve, can be arranged on the tenth path 30. When the pressure of the oil in the output path 12 does not reach the relief pressure of the relief valve, the tenth path 30 is closed by the relief valve, otherwise, the tenth path 30 is opened by the relief valve, thereby protecting the displacement regulating system.

[0077] The displacement adjustment system provided in this embodiment realizes the secondary adjustment of the displacement of the variable pump through the coordinated control of the control valve and the valve member 15, which has a faster response speed than the traditional double-adjustment chamber variable pump and a stable variable control. In addition, the pressure curve output by the displacement adjustment system is more suitable for the needs of the engine 6, and the clearance formed by the second step portion 19 of the low-pressure valve core member 151 and the barrel portion of the high-pressure valve core member 152 can ensure that the output curve of the variable pump controlled by the high pressure is more stable.

[0078] The above are only preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. All equivalent structural changes made by using the contents of the present application specification and drawings under the innovative concept of the present application, or directly / indirectly applied in other related technical fields are included in the protection scope of the present application.

Claims

1. A displacement adjustment system, characterized in that: The displacement regulating system is used to regulate the displacement of the medium output to the device to be supplied, and the displacement regulating system also includes: Control valves; A pump component is formed with a regulating chamber, an input chamber and an output chamber, and when the pressure of the medium in the regulating chamber increases, the pressure of the medium output by the output chamber decreases; A medium source, used for providing and receiving the medium; A valve member, the valve member comprising: A containing member, formed with a containing cavity; A valve core assembly is disposed in the accommodating cavity, so that the accommodating cavity is divided into a first chamber and a second chamber by the valve core assembly; The accommodating cavity is further formed with a third chamber located between the first chamber and the second chamber; The accommodating member is formed with a second hole portion for connecting the second chamber to the outside and a fourth hole portion for connecting the third chamber to the outside; the valve core assembly is located at a first predetermined position in an initial state; In the first working state of the valve core assembly, the valve core assembly can move from the first predetermined position to gradually occupy the second chamber, and when the valve core assembly moves to the second predetermined position, the second hole portion is communicated with the fourth hole portion via the third chamber; A third chamber is defined by a portion of the valve core assembly and a portion of the accommodating member, and the accommodating member is further formed with a third hole portion for connecting the second chamber to the outside and a first hole portion for connecting the first chamber to the outside, and a medium can enter the first chamber through the first hole portion, so that the valve core assembly is converted from the initial state to the first working state; In the second working state of the valve core assembly, the medium can enter the third chamber through the fourth hole portion, the valve core assembly moves from the first predetermined position to gradually occupy the second chamber, and when the valve core assembly moves to the second predetermined position, the second hole portion is communicated with the fourth hole portion via the third chamber; The medium flows from the medium source into the input chamber via a first path, and flows from the output chamber into the device to be supplied via a second path at a higher pressure, and the medium in the device to be supplied flows into the medium source via a third path; The regulating chamber is in communication with the second chamber via a fourth path and the second hole portion in sequence; The second chamber is connected to the medium source via the third hole and the fifth path in sequence; The second path is connected to the fourth hole portion via a sixth path; The first chamber is connected to the control valve via the first hole and the seventh path in sequence, so that when the control valve is in a first control position, the seventh path is connected to the second path via an eighth path, and when the control valve is in a second control position, the seventh path is connected to the medium source via a ninth path; The valve core assembly moves in a first posture in the first working state, and moves in a second posture in the second working state; The valve core assembly includes a first valve core component and a second valve core component. The first valve core component includes a first step portion and a second step portion connected to each other, the first step portion is closer to the first end of the accommodating cavity relative to the second step portion; The second valve core member includes a third step portion, the third step portion is formed with a barrel portion, and the barrel portion is sleeved on the outer side of a portion of the second step portion; The second valve core component further includes a fourth step portion and a fifth step portion, wherein the third step portion, the fourth step portion and the fifth step portion are sequentially connected and are away from the first valve core component; A return spring is provided between one of the third step portion, the fourth step portion and the fifth step portion and the second end of the accommodating cavity, and the return spring is used to make the second valve core component generate a movement trend so that the valve core component can be reset to an initial state from the first working state and the second working state; When the valve core assembly moves in the first posture, the first valve core component and the second valve core component move together; When the valve core assembly moves in the second posture, only the second valve core component moves; The second valve core component is formed with a guide channel. When the valve core assembly moves in the second posture, the space defined by the barrel and the second step portion is communicated with the second chamber via the guide channel.

2. The displacement regulating system according to claim 1, characterized in that: A portion of the first valve core member, a portion of the second valve core member, and a portion of the containment member together define a third chamber.

3. The displacement regulating system according to claim 2, characterized in that: Two ends of the accommodating cavity in the direction of movement of the valve core assembly are respectively defined as a first end of the accommodating cavity and a second end of the accommodating cavity; A stop portion is formed on the inner side of the accommodating cavity. In the initial state, the first valve core component cooperates with the stop portion so that further movement of the first valve core component toward the first end of the accommodating cavity is prevented, and the first chamber in the initial state is defined between the first end of the accommodating cavity and the first valve core component.

4. The displacement regulating system according to claim 3, characterized in that: A direction from the first end of the accommodating cavity to the second end of the accommodating cavity is defined as a first direction; A cutout portion is formed in the outer portion of the third step portion from one end of the third step portion close to the first valve core member along the first direction, occupying a portion of the outer portion of the third step portion; The third chamber is defined by an end of the first step portion facing away from the first end of the accommodating cavity, an end of the third step portion close to the first step portion, an outer side of the notched portion, and an inner side of the accommodating cavity.

5. The displacement regulating system according to claim 4, characterized in that: The first step portion and the second step portion are both formed in a cylindrical shape, and a portion of the second step portion sleeved by the barrel portion is formed with a clearance fit with the barrel portion; The second chamber is defined by an end of the third step portion facing away from the first valve core member, the fourth step portion and the fifth step portion, the second end of the accommodating cavity, and the inner side of the accommodating cavity.

6. The displacement regulating system according to claim 1, characterized in that: The second path is also connected to the medium source via a tenth path, and a safety valve component is provided on the tenth path. When the medium in the second path exceeds the safety pressure, the safety valve component conducts the tenth path; a filter component is also provided on the second path; The control valve is formed as a solenoid valve, the medium is formed as engine oil, the medium source is formed as an oil pan, the device to be supplied is formed as an engine, and the pump member is formed as a vane oil pump.

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