One-way valve for parallel supercharger system
By designing a flexible force check valve in the parallel supercharger system, the problem of insufficient power at low and high speeds is solved, and the efficient coordinated work of the electric supercharger and the turbocharger are achieved, and the power output and fuel efficiency of the engine are improved.
Patent Information
- Application Number
- CN202421867360.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-05
- Publication Date
- 2025-05-13
- Estimated Expiration
- 2034-08-05
AI Technical Summary
In the prior art, the engine has insufficient power at low speeds, the turbocharger has low rotational speed and the boosting effect is not obvious; while at high speeds, the power increase of the electric booster is not obvious, and there is room for improvement in the gas circuit structure of the parallel boosting system.
A check valve for use in a parallel supercharger system is designed, with an elastic force inventive structure. At low speed, the check valve is closed to boost the electric supercharger; at high speed, the airflow overcomes the elastic force to open the check valve and performs turbocharger.
It realizes that the engine intake is increased by an electric supercharger at low speed, and provides greater boost pressure through a turbocharger at high speed. The overall structure is compact and the airflow flow is smooth at high pressure, which improves the engine's power output and fuel efficiency.
Smart Images
Figure CN222863497U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of automobile engine supercharging, and in particular relates to a one-way valve used in a parallel supercharger system. Background Art
[0002] A turbocharger is a boosting device used in automobile engine systems that uses the power of the engine's exhaust gas to increase the engine's intake volume and output power. Turbochargers play an important role in improving engine performance and combustion efficiency, and are widely used in automobiles and other internal combustion engine-driven equipment.
[0003] In the prior art, the engine generally uses a turbocharger alone, but the engine power is weak at low speed, and the driving force for generating exhaust gas is insufficient, which makes the turbocharger rotate at a low speed and the supercharging effect is not obvious. There is also a solution that directly uses an electric supercharger, which can rely on the electric motor to produce a good supercharging effect when the engine is at low speed, but the power improvement is not obvious when the engine is at high speed. Based on this, there are also supercharging systems in which electric superchargers and turbochargers are connected in parallel in the prior art, but the gas path structure therein needs to be improved. Therefore, this application proposes a one-way valve in the automobile engine structure in which electric superchargers and turbochargers are connected in parallel. Utility Model Content
[0004] In view of the deficiencies in the above prior art, the utility model provides a one-way valve for a parallel supercharger system, which has an elastic force invention structure. At low speed, the one-way valve is closed, allowing the electric supercharger to perform supercharging. At high speed, the airflow overcomes the elastic force to open the one-way valve for turbocharging. The overall structure is compact, and the airflow flows smoothly under high pressure.
[0005] The utility model solves the problem through the following technical solutions.
[0006] A one-way valve used in a parallel supercharger system, wherein a fixed unit and a movable unit are provided in the one-way valve, an elastic member is provided between the fixed unit and the movable unit, and the elastic force of the elastic member causes the movable unit to be in a closed position; overcoming the elastic force of the elastic member and moving the movable unit toward the fixed unit can release the movable unit from the closed state, allowing airflow to pass through, and at this time, the high-pressure intake air provided by the turbocharger can well meet the boost demand of the engine.
[0007] In a preferred embodiment, the one-way valve includes a first shell and a second shell that are assembled, such as being assembled by bolts after being buckled together, and are equipped with a sealing ring for sealing; the first shell and the second shell have an outward convex structure at the assembly position, specifically, the opposite ends of the first shell and the second shell have a trumpet-shaped expansion, and the outward convex structure is formed after assembly; the fixed unit is positioned in the outward convex structure, and the movable unit is movably arranged on the fixed unit, and the assembly structure is compact.
[0008] In a preferred embodiment, the outer periphery of the fixing unit is connected to a supporting ring via at least three supporting arms. The supporting ring is assembled on the inner wall of the outer convex structure. A corresponding annular groove is provided on the inner wall. The supporting ring has good stability after assembly and high overall structural strength.
[0009] In a preferred embodiment, the outer end face of the mobile unit is a convex curved surface, which facilitates the passage of airflow and has low resistance. A sealing ring is provided on the convex curved surface. When in a closed position, the sealing ring abuts against the inner wall of the first shell to achieve sealing. Specifically, it abuts against the trumpet-shaped expansion, which has a good sealing effect and also serves as a limit for the mobile unit.
[0010] In a preferred embodiment, the fixed unit is provided with a through hole, and the movable unit is provided with a guide rod body, and the guide rod body is inserted into the through hole and can move in the through hole. The structure has high assembly stability and good directionality when moving. Preferably, a sliding sleeve can be first assembled in the through hole, and the guide rod body moves in the sliding sleeve, which has good directionality and avoids getting stuck.
[0011] In a preferred embodiment, a spring placement cavity is provided on the opposite end surfaces of the fixed unit and the movable unit, and the elastic member is a spring arranged in the spring placement cavity for providing elastic force.
[0012] In a preferred embodiment, the end surface of the fixed unit away from the movable unit is a convex curved surface with small airflow resistance.
[0013] Compared with the prior art, the utility model has the following beneficial effects: it provides a one-way valve for a parallel supercharger system, which has an elastic force invention structure. At low speed, the one-way valve is closed, allowing the electric supercharger to perform supercharging. At high speed, the airflow overcomes the elastic force to open the one-way valve for turbocharging. The overall structure is compact, and the airflow flows smoothly under high pressure. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the connection relationship of the engine structure of the series supercharger in the utility model.
[0015] Figure 2 It is a three-dimensional diagram of the one-way valve in the utility model.
[0016] Figure 3 It is a three-dimensional diagram of the first shell and the second shell in the utility model.
[0017] Figure 4 It is a cross-sectional view of the one-way valve in the utility model.
[0018] Figure 5 It is a three-dimensional diagram of a one-way valve in the present invention with the first housing omitted.
[0019] Figure 6 It is a three-dimensional diagram of the internal structure of the one-way valve in the utility model.
[0020] Figure 7 The three-dimensional structure of the fixing unit in the utility model Figure 1 .
[0021] Figure 8 The three-dimensional structure of the fixing unit in the utility model Figure 2 .
[0022] Fig. 9 It is a three-dimensional diagram of the mobile unit and the spring thereon in the present invention. DETAILED DESCRIPTION
[0023] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.
[0024] In the following embodiments, the same or similar numbers throughout represent the same or similar elements or elements with 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 invention, and should not be construed as limiting the present invention.
[0025] In the description of the present utility model, it should be understood that the terms: center, longitudinal, transverse, length, width, thickness, up, down, front, back, left, right, vertical, horizontal, top, bottom, inside, outside, clockwise, counterclockwise, etc. indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present utility model and simplifying the description, and therefore cannot be understood as limiting the present utility model. In addition, the terms: first, second, etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features shown. In the description of the present utility model, unless otherwise clearly specified and limited, the terms: install, connect, connect, etc. should be understood in a broad sense, and ordinary technicians in this field can understand the specific meanings of the above terms in this application according to the specific circumstances.
[0026] See also Figure 1The present application relates to an automobile engine structure in which an electric supercharger and a turbocharger are connected in parallel, comprising an engine 1, a turbocharger 2, and an electric supercharger 3; the exhaust pipe L1 of the engine 1 is connected to the turbine assembly 22 of the turbocharger 2, the compressor assembly 21 of the turbocharger 2 is connected to the electric compressor 31 of the electric supercharger 3 through a first air pipe L4, and the electric compressor 31 is connected to the engine intake pipe L6 through a second air pipe L5; the first air pipe L4 is connected to the engine intake pipe L6 through a third air pipe L7, and a one-way valve 4 is provided on the third air pipe L7, which allows the gas in the first air pipe L4 to enter the engine intake pipe L6 after overcoming the elastic force of the one-way valve 4.
[0027] See also Figures 2 to 9 , the one-way valve structure involved in the present application, specifically, as can be seen from the accompanying drawings, the one-way valve 4 is provided with a fixed unit 45 and a movable unit 46, and an elastic member 48 is provided between the fixed unit 45 and the movable unit 46, and the elastic force of the elastic member 48 makes the movable unit 46 in a closed position; overcoming the elastic force of the elastic member 48 and moving the movable unit 46 toward the fixed unit 45 can release the movable unit 46 from the closed state, allowing airflow to pass through, and at this time, the high-pressure intake air provided by the turbocharger 2 can well meet the boost demand of the engine.
[0028] Furthermore, in the present application, the one-way valve 4 includes a first shell 41 and a second shell 42 that are assembled and formed, such as being assembled by bolts after being buckled together, and are equipped with a sealing ring for sealing; the first shell 41 and the second shell 42 have an outward convex structure at the assembly position, specifically, the opposite ends of the first shell 41 and the second shell 42 have a trumpet-shaped expansion, and a convex structure is formed after assembly; the fixed unit 45 is positioned in the outward convex structure, and the movable unit 46 is movably provided on the fixed unit 45, and the assembly structure is compact.
[0029] From the attached Figure 6 To Attachment Figure 8 It can be seen that in the present application, the outer periphery of the fixed unit 45 is connected to the support ring 451 through at least three support arms 452. The support ring 451 is assembled on the inner wall of the outer convex structure, and the inner wall is provided with a corresponding annular groove. The support ring 451 has good stability after assembly and high overall structural strength. In addition, the outer end face of the mobile unit 46 is a convex curved surface, which is convenient for airflow to pass through and has low resistance. A sealing ring 461 is provided on the convex curved surface. When in the closed position, the sealing ring 461 abuts against the inner wall of the first shell 41 to achieve sealing. Specifically, it abuts against the trumpet-shaped expansion, which has a good sealing effect and also serves as a limit function for the mobile unit 46.
[0030] In the present application, the fixed unit 45 is provided with a through hole 455, and the movable unit 46 is provided with a guide rod body 47, and the guide rod body 47 is inserted into the through hole 455 and can move in the through hole 455. The structure has high assembly stability and good directionality when moving. Preferably, a sliding sleeve 471 can be first assembled in the through hole 455, and the guide rod body 47 moves in the sliding sleeve 471, which has good directionality and avoids getting stuck. Furthermore, spring placement cavities are provided on the opposite end faces of the fixed unit 45 and the movable unit 46, and the elastic member 48 is a spring arranged in the spring placement cavity, which is used to provide elastic force. In the present application, the end face of the fixed unit 45 away from the movable unit 46 is a convex curved surface with low airflow resistance.
[0031] As can be seen from the above description, the automobile engine structure in the present application adopts a structure in which an electric supercharger and a turbocharger are connected in parallel. When the speed of the engine 1 is low, such as when the car is just started, the electric supercharger 2 is used for boosting. At this time, the one-way valve 4 is in a closed state, and the efficiency of the turbocharger 2 is insufficient. The intake volume provided by the turbocharger 2 is also boosted by the electric supercharger 2, which effectively increases the intake volume of the engine 1 and has a good boosting effect. When the speed of the engine 1 is high, such as when the car is driving at high speed, the efficiency of the turbocharger 2 is optimal and the intake pressure provided is large. In this state, the intake pressure will overcome the elastic force of the one-way valve 4, so that the one-way valve 4 is in an open state, so that the boosted intake volume of the turbocharger 2 can be directly supplemented into the engine through the engine intake pipe L6, which has a good boosting effect and can also reduce the pressure of the electric supercharger and reduce energy consumption.
[0032] The innovation of this application lies in the reasonable arrangement of the electric supercharger and the turbocharger, and the provision of a one-way valve with a unique structure, which can be opened under air pressure and has different opening degrees depending on the air pressure. This solution not only solves the problem of weak engine power at low speed, but also improves the engine power at high speed and reduces the fuel consumption of the engine at high speed.
[0033] Specifically, in the present application, by connecting the electric supercharger and the turbocharger in parallel, when the engine is at a low speed, although the turbocharger recovers part of the exhaust gas energy, the compressor outlet pressure is still relatively small. At this time, the electric supercharger is controlled to work to increase the engine intake volume. When the engine is at a high speed, the turbocharger receives more exhaust gas from the engine, which can drive the turbocharger to run at a high speed. The compressor outlet pressure is large, so that the engine can get more air. At this time, the engine torque and power are significantly improved.
[0034] However, since the electric supercharger and the turbocharger are connected in parallel, the high-pressure gas at the outlet of the electric supercharger compressor may flow back to the outlet of the turbocharger compressor at low speed, causing pressure loss in the engine intake manifold. In order to solve this problem, a one-way valve is arranged at the outlet of the turbocharger compressor in the present application, so that the pressure from the electric supercharger no longer flows back to the outlet of the turbocharger compressor at low speed. As the engine speed increases, the high-pressure pressure from the turbocharger gradually increases. When the pressure increases to a level that can overcome the closing pressure of the one-way valve and the outlet pressure of the electric supercharger compressor, the one-way valve opens, and the engine obtains a greater boost pressure.
[0035] When there is no pressure in the one-way valve, the elastic force of the elastic part presses the moving unit 46 onto the inner wall of the pipeline. When there is pressure, the elastic force is overcome under the action of pressure, and the moving unit 46 moves away from the pipeline and close to the fixed unit 45. The moving unit 46 is designed to be a curved surface in the direction facing the airflow, and the moving unit 46 is designed to be a curved surface in the direction away from the airflow. The space that wraps the sliding element and the fixed element, that is, the convex structure is also a curved surface structure, so as to form a suitable airflow channel and minimize the energy loss of gas flow. The guide rod body 47 is provided to provide support and positioning for the moving unit 46 when it is opened and closed.
[0036] As described above, the utility model provides a one-way valve for a parallel supercharger system, which has an elastic force invention structure. At low speed, the one-way valve is closed, allowing the electric supercharger to perform supercharging. At high speed, the airflow overcomes the elastic force to open the one-way valve to perform turbocharging. The overall structure is compact, and the airflow flows smoothly under high pressure.
[0037] The protection scope of the present invention includes but is not limited to the above embodiments. The protection scope of the present invention shall be based on the claims. Any replacement, deformation, and improvement of the technology that can be easily thought of by technicians in this field shall fall within the protection scope of the present invention.
Claims
1. A one-way valve used in a parallel supercharger system, characterized in that: The one-way valve (4) is provided with a fixed unit (45) and a movable unit (46), an elastic member (48) is provided between the fixed unit (45) and the movable unit (46), and the elastic force of the elastic member (48) causes the movable unit (46) to be in a closed position; Overcoming the elastic force of the elastic member (48) and moving the movable unit (46) toward the fixed unit (45) can release the movable unit (46) from the closed state, allowing airflow to pass through.
2. The one-way valve for a parallel supercharger system according to claim 1, characterized in that: The one-way valve (4) comprises a first shell (41) and a second shell (42) which are assembled and formed, wherein the assembly positions of the first shell (41) and the second shell (42) have an outer convex structure, the fixed unit (45) is positioned in the outer convex structure, and the movable unit (46) is movably arranged on the fixed unit (45).
3. The one-way valve for a parallel supercharger system according to claim 2, characterized in that: The outer end surface of the moving unit (46) is a convex curved surface, and a sealing ring (461) is provided on the convex curved surface. When in a closed position, the sealing ring (461) abuts against the inner wall of the first housing (41) to achieve sealing.
4. The one-way valve for a parallel supercharger system according to claim 2, characterized in that: The outer periphery of the fixing unit (45) is connected to a support ring (451) via at least three support arms (452), and the support ring (451) is assembled on the inner wall of the outer convex structure.
5. The one-way valve for a parallel supercharger system according to claim 2, characterized in that: The fixed unit (45) is provided with a through hole (455), and the movable unit (46) is provided with a guide rod body (47); the guide rod body (47) is inserted into the through hole (455) and can move in the through hole (455).
6. The one-way valve for a parallel supercharger system according to claim 2, characterized in that: The end surface of the fixed unit (45) away from the movable unit (46) is a convex curved surface.
7. The one-way valve for a parallel supercharger system according to claim 2, characterized in that: A spring placement cavity is provided on the opposite end surfaces of the fixed unit (45) and the movable unit (46), and the elastic member (48) is a spring arranged in the spring placement cavity.