A novel flow regulation structure for an automotive engine hot-end EGR valve

Abstract

This utility model relates to the field of EGR valve technology and discloses a novel flow regulation structure for a hot-end EGR valve in an automotive engine. The structure includes a mounting plate, a connecting pipe, an annular plate, and an EGR valve body. Both the mounting plate and the annular plate are fixedly connected to the arcuate surface of the connecting pipe. The EGR valve body is slidably connected to the inner wall of the annular plate. A connecting plate is fixedly connected to the arcuate surface of the EGR valve body, and the connecting plate is slidably connected to one end of the annular plate. A wiring port is provided on the arcuate surface of the EGR valve body. This novel flow regulation structure for a hot-end EGR valve in an automotive engine solves the problem of difficult disassembly and maintenance of existing EGR valves. Traditional models often use rigid bolt connections, requiring multiple tools to remove fasteners one by one during maintenance, which is cumbersome and time-consuming, especially in the confined space of the engine compartment where efficiency is extremely low. Furthermore, during use, the connection between the EGR valve and the vehicle's wiring is prone to loosening due to vehicle movement and engine operation, leading to EGR valve malfunction or abnormal operation.

Description

Technical Field

[0001] This utility model relates to the field of EGR valve technology, and in particular to a novel flow regulation structure for a hot-end EGR valve of an automotive engine. Background Technology

[0002] An EGR valve is an electromechanical product used to control the amount of exhaust gas recirculated back to the intake system. It is a crucial component of any exhaust gas recirculation system. Currently, the flow regulation of EGR valves is typically controlled by the engine control unit (ECU) which sends signals based on various operating conditions such as engine speed, temperature, and throttle opening to regulate the valve's opening.

[0003] Regarding the above-mentioned and existing related technologies, the inventors believe that the following defects often exist: Existing EGR valves are difficult to disassemble and maintain. Traditional EGR valves mostly use rigid bolt connections, and during maintenance, various tools are needed to disassemble the fasteners one by one, which is cumbersome and time-consuming. Especially in the confined space of the engine compartment, the efficiency is extremely low. At the same time, during the use of the EGR valve, the connection between the EGR valve and the wiring in the vehicle is prone to loosening due to vehicle movement and engine operation, which can lead to EGR valve malfunction and abnormal operation. Utility Model Content

[0004] The technical problem this utility model aims to solve is that existing EGR valves are difficult to disassemble and maintain. Traditional models are mostly rigid bolt connections, requiring multiple tools to remove fasteners one by one for maintenance, which is cumbersome and time-consuming, especially in the confined space of the engine compartment where the efficiency is extremely low. Furthermore, during use, the connection between the EGR valve and the vehicle's wiring is prone to loosening due to vehicle movement and engine operation, leading to EGR valve malfunction or abnormal operation. Therefore, we propose a new flow regulation structure for the hot-end EGR valve of an automotive engine.

[0005] To achieve the above objectives, this application adopts the following technical solution: a novel flow regulation structure for an automotive engine hot-end EGR valve, comprising a mounting plate, a connecting pipe, an annular plate, and an EGR valve body. The mounting plate and the annular plate are both fixedly connected to the arc surface of the connecting pipe. The EGR valve body is slidably connected to the inner wall of the annular plate. A connecting plate is fixedly connected to the arc surface of the EGR valve body, and the connecting plate is slidably connected to one end of the annular plate. The arc surface of the EGR valve body is provided with a wiring port. One end of the annular plate is provided with a disassembly device, which includes two mounting slots. The grooves are all opened at one end of the annular plate. Two mounting blocks are fixedly connected to the end of the connecting plate near the annular plate. The mounting blocks are slidably connected to the inner wall of the mounting groove. Two circular holes are opened on the arc surface of the annular plate. The circular holes are connected to the mounting groove. A sliding groove is opened on the side of the two mounting blocks that are far apart from each other. A first spring is fixedly connected to the inner wall of the sliding groove. A round rod is fixedly connected to the other end of the first spring. The round rod is slidably connected to the inner wall of the sliding groove. The size of the round rod is adapted to the size of the circular hole. A sliding rod is slidably connected to the inner wall of the circular hole. A circular block is fixedly connected to one end of the sliding rod.

[0006] Preferably, a second spring is fitted onto the arc surface of the slide rod, and the two ends of the second spring are fixedly connected to the annular plate and the circular block, respectively.

[0007] Preferably, a sealing gasket is fixedly connected to the inner wall of the annular plate, the sealing gasket is made of silicone rubber, and the front end of the circular rod is arc-shaped.

[0008] Preferably, the circular ring plate is fixedly connected to the arc surface of the ring plate, the upper surface of the mounting plate is provided with a square groove, the inner wall of the square groove is slidably connected with a square block, both sides of the mounting plate are provided with sliding holes, the square groove communicates with the sliding holes, the arc surface of the circular block is fixedly connected with an arc block, and the other end of the arc block passes through the sliding hole and is fixedly connected to the square block.

[0009] Preferably, the upper surface of the wiring port is provided with a clamping device, the clamping device includes a fixing block, the fixing block is fixedly connected to the upper surface of the wiring port, an L-shaped block is fixedly connected to one side of the fixing block, a plurality of third springs are fixedly connected to the inner wall of the L-shaped block, a clamping plate is fixedly connected to one end of the plurality of third springs, and the clamping plate is slidably connected to one side of the fixing block.

[0010] Preferably, an arc-shaped frame is fixedly connected to the inner wall of the L-shaped block, a long rod is slidably connected to the inner wall of the arc-shaped frame, a connecting block is fixedly connected to the surface of the clamping plate, and the connecting block is fixedly connected to the arc surface of the long rod.

[0011] Preferably, an arc-shaped pad is fixedly connected to the inner wall of the clamping plate, and the arc-shaped pad is an elastic body.

[0012] The technical effects and advantages of this utility model are as follows:

[0013] In this invention, by setting up a disassembly device, and utilizing the cooperation of its internal mounting groove, mounting block, round rod, sliding rod, and other components, the disassembly and assembly operations between the connecting plate and the annular plate on the EGR valve body can be quickly and conveniently realized. When installation is required, simply align the mounting block on the connecting plate with the mounting groove of the annular plate and insert it. The round rod inside the mounting block will automatically engage with the round hole of the annular plate under the action of the first spring, completing a secure connection. When inspecting or replacing the EGR valve body, simply push the sliding rod to remove the round rod from the round hole, and the connecting plate and the annular plate can be easily separated. This greatly reduces the operational difficulty of installing, inspecting, or replacing the EGR valve and saves maintenance time.

[0014] In this invention, a clamping device consisting of a fixing block, an L-shaped block, a third spring, and a clamping plate is provided on the wiring port. Under the elastic action of the third spring, the connected wire harness can be automatically clamped and fixed, effectively preventing the wire harness from loosening or falling off during engine vibration or vehicle operation, and ensuring the stability and reliability of the electrical connection. Attached Figure Description

[0015] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts:

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the disassembly device in this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the annular plate in this utility model;

[0019] Figure 4 In this utility model Figure 3 Enlarged view of point A;

[0020] Figure 5 This is a schematic diagram of the slide groove in this utility model;

[0021] Figure 6 This is a schematic diagram of the mounting plate in this utility model;

[0022] Figure 7 This is a schematic diagram of the clamping device in this utility model;

[0023] Figure 8 This is a structural schematic diagram of the L-shaped block in this utility model.

[0024] Legend: 1. Flange; 2. Connecting pipe; 3. EGR valve body; 4. Circular ring plate; 5. Wiring port; 6. Connecting disc; 7. Disassembly device; 701. Mounting groove; 702. Mounting block; 703. Circular hole; 704. Slide groove; 705. First spring; 706. Circular rod; 707. Slide rod; 708. Circular block; 709. Second spring; 710. Arc-shaped block; 711. Mounting plate; 712. Square groove; 713. Square block; 714. Slide hole; 715. Sealing gasket; 8. Clamping device; 81. Fixing block; 82. L-shaped block; 83. Third spring; 84. Clamping plate; 85. Arc-shaped frame; 86. Connecting block; 87. Long rod; 88. Arc-shaped gasket. Detailed Implementation

[0025] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0026] Reference Figures 1-8As shown, this utility model provides a technical solution: a novel flow regulation structure for an EGR valve at the hot end of an automotive engine, including a mounting plate, a connecting pipe 2, an annular plate 4, and an EGR valve body 3. Both the mounting plate and the annular plate 4 are fixedly connected to the arc surface of the connecting pipe 2. The EGR valve body 3 is slidably connected to the inner wall of the annular plate 4. A connecting plate 6 is fixedly connected to the arc surface of the EGR valve body 3, and the connecting plate 6 is slidably connected to one end of the annular plate 4. The arc surface of the EGR valve body 3 is provided with a wiring port 5, and one end of the annular plate 4 is provided with a disassembly device 7. By setting the disassembly device 7, and utilizing the cooperation of its internal mounting groove 701, mounting block 702, round rod 706, sliding rod 707, etc., the disassembly and assembly operations between the connecting plate 6 and the annular plate 4 on the EGR valve body 3 can be quickly and conveniently realized. When installation is required, simply align the mounting block 702 on the connecting plate 6 with... When the mounting slot 701 of the annular plate 4 is inserted, the round rod 706 in the mounting block 702 will automatically engage in the round hole 703 of the annular plate 4 under the action of the first spring 705, thus completing a secure connection. When inspecting or replacing the EGR valve body 3, simply push the slide rod 707 to remove the round rod 706 from the round hole 703, and the connecting plate 6 can be easily separated from the annular plate 4. This greatly reduces the operational difficulty of installing, inspecting, or replacing the EGR valve and saves maintenance time. The upper surface of the wiring port 5 is provided with a clamping device 8. By setting a clamping device 8 consisting of a fixing block 81, an L-shaped block 82, a third spring 83, and a clamping plate 84 on the wiring port 5, the connected wire harness can be automatically clamped and fixed under the elastic action of the third spring 83, effectively preventing the wire harness from loosening or falling off during engine vibration or vehicle operation, and ensuring the stability and reliability of the electrical connection.

[0027] The following section will explain the specific design and function of the disassembly device 7 and the clamping device 8.

[0028] Reference Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6As shown in this embodiment: the disassembly device 7 includes two mounting grooves 701, both of which are opened at one end of the annular plate 4. Two mounting blocks 702 are fixedly connected to the end of the connecting plate 6 near the annular plate 4. The mounting blocks 702 are slidably connected to the inner wall of the mounting grooves 701. Two circular holes 703 are opened on the arc surface of the annular plate 4, communicating with the mounting grooves 701. A sliding groove 704 is opened on the side of each mounting block 702 that is far from each other. The inner surface of the sliding groove 704... A first spring 705 is fixedly connected to the wall, and a round rod 706 is fixedly connected to the other end of the first spring 705. The round rod 706 is slidably connected to the inner wall of the slide groove 704. The size of the round rod 706 is adapted to the size of the round hole 703. A slide rod 707 is slidably connected to the inner wall of the round hole 703. A round block 708 is fixedly connected to one end of the slide rod 707. A second spring 709 is sleeved on the arc surface of the slide rod 707. The two ends of the second spring 709 are fixedly connected to the annular plate 4 and the round block 708, respectively. By installing a second spring 709 on the arc surface of the slide rod 707, with its two ends fixedly connected to the annular plate 4 and the circular block 708 respectively, the elastic force of the spring can be used to make the slide rod 707 automatically reset after pushing the circular rod 706 out of the circular hole 703, ensuring that the slide rod 707 is in the initial effective state when disassembling and assembling next time. A sealing gasket 715 is fixedly connected to the inner wall of the annular plate 4. The sealing gasket 715 is made of silicone rubber. The front end of the circular rod 706 is arc-shaped. The silicone rubber sealing gasket 715 enhances the sealing between the annular plate 4 and the EGR valve body 3, effectively preventing exhaust gas leakage. Silicone rubber also possesses excellent high-temperature and corrosion resistance, allowing it to withstand the harsh environment of the engine's hot end. The front end of the round rod 706 is designed in an arc shape, facilitating its smooth insertion into the round hole 703 during installation, reducing operational resistance during disassembly and assembly, and improving ease of installation and disassembly. A mounting plate 711 is fixedly connected to the arc surface of the annular plate 4. A square groove 712 is formed on the upper surface of the mounting plate 711, and a square block 713 is slidably connected to the inner wall of the square groove 712. Sliding holes 714 are formed on both sides of the mounting plate 711, and the square groove 712 communicates with the sliding holes 714. An arc-shaped block 710 is fixedly connected to the arc surface of the round block 708, and the other end of the arc-shaped block 710 passes through the sliding hole 714 and is fixedly connected to the square block 713. By incorporating a mounting plate 711, a square groove 712, a square block 713, a sliding hole 714, and an arc-shaped block 710 on the annular plate 4, synchronous operation of the two sliding rods 707 can be achieved. When the square block 713 is moved, it drives the sliding rods 707 on both sides to simultaneously push the round rod 706 out of the round hole 703 via the arc-shaped block 710, allowing the EGR valve body 3 to quickly separate from the annular plate 4. This design simplifies the disassembly process, avoids uneven force distribution caused by unilateral operation, and effectively improves disassembly and assembly efficiency and ease of operation.

[0029] Reference Figure 7 and Figure 8As shown, specifically, the clamping device 8 includes a fixing block 81, which is fixedly connected to the upper surface of the wiring port 5. An L-shaped block 82 is fixedly connected to one side of the fixing block 81. Several third springs 83 are fixedly connected to the inner wall of the L-shaped block 82. A clamping plate 84 is fixedly connected to one end of each of the third springs 83. The clamping plate 84 is slidably connected to one side of the fixing block 81. An arc-shaped frame 85 is fixedly connected to the inner wall of the L-shaped block 82. A long rod 87 is slidably connected to the inner wall of the arc-shaped frame 85. A connecting block 86 is fixedly connected to the surface of the clamping plate 84. The connecting block 86 is fixedly connected to the arc surface of the long rod 87. By setting an arc-shaped frame 85 and a long rod 87 on the inner wall of the L-shaped block 82, and fixing the long rod 87 to the connecting block 86 of the clamping plate 84, the movement direction of the clamping plate 84 can be precisely guided. When the third spring 83 drives the clamping plate 84 to clamp the wire harness, the long rod 87 slides along the inner wall of the arc-shaped frame 85, preventing the clamping plate 84 from shifting or tilting, ensuring that it always fits the wire harness in a stable posture, thus improving the clamping stability. An arc-shaped pad 88 is fixedly connected to the inner wall of the clamping plate 84. The arc-shaped pad 88 is an elastic body. The arc-shaped pad 88 made of elastic material can form a buffer, which can alleviate the squeezing damage of the clamping force on the outer layer of the wire harness. At the same time, it can increase the frictional force of contact with the wire harness, further increasing the clamping stability.

[0030] Working principle: During installation, the mounting block 702 on the connecting plate 6 is aligned with the mounting groove 701 of the annular plate 4 and inserted. The round rod 706 in the sliding groove 704 inside the mounting block 702 pops out under the elastic force of the first spring 705 and automatically engages in the round hole 703 connecting the annular plate 4 and the mounting groove 701, thus securing the connecting plate 6 and the annular plate 4 together. At the same time, the silicone rubber sealing gasket 715 on the inner wall of the annular plate 4 fits tightly, enhancing the sealing performance and preventing exhaust gas leakage. Its high temperature resistance and corrosion resistance allow it to adapt to the harsh environment of the engine. During disassembly, the square groove 712 in the mounting plate 711 is moved... Block 713, a square block 713, drives the two sliding rods 707 to move synchronously through the arc-shaped block 710 passing through the sliding hole 714. The sliding rod 707 pushes the round rod 706 in the round hole 703 to compress the first spring 705 and retract into the sliding groove 704 of the mounting block 702, so that the round rod 706 is freed from the constraint of the round hole 703. At the same time, the second spring 709 on the arc surface of the sliding rod 707 is compressed when the sliding rod 707 moves. After the round rod 706 exits the round hole 703, the second spring 709 elastically resets and drives the sliding rod 707 back to the initial position for the next use. At this time, the connecting plate 6 can be easily separated from the annular plate 4. In addition, the front end of the round rod 706 is designed to be arc-shaped, which reduces the operating resistance of the round rod 706 when it is inserted into the round hole 703 during installation and improves the smoothness of disassembly and assembly. The synchronous linkage design of the two sliding rods 707 avoids uneven force caused by unilateral operation, further simplifies the disassembly steps, and improves the efficiency and convenience of disassembly and assembly.

[0031] When a wire is connected to the terminal 5, the third spring 83 pushes the clamping plate 84 to slide along the side of the fixing block 81 through elastic force, so that the clamping plate 84 automatically moves towards the wire and clamps it, effectively preventing the wire harness from loosening or falling off due to vehicle movement or engine vibration. During this process, the long rod 87, which is slidably connected inside the arc frame 85, is fixed to the clamping plate 84 through the connecting block 86, forming a precise guiding structure. When the third spring 83 drives the clamping plate 84 to move, the long rod 87 slides synchronously along the inner wall of the arc frame 85, limiting the movement trajectory of the clamping plate 84 and preventing it from deviating or tilting, ensuring that the clamping plate 84 always fits the wire harness in a stable posture, greatly improving clamping stability and ensuring reliable electrical connection. The elastic arc-shaped pad 88 on the inner wall of the clamping plate 84 has both buffering and friction-increasing functions. On the one hand, it can alleviate the squeezing damage to the outer layer of the wire harness caused by the clamping force of the third spring 83 and protect the insulation layer of the wire harness. On the other hand, it can increase the contact friction with the wire harness, further enhance the wire harness fixing effect, and prevent the wire harness from undergoing slight displacement in a vibration environment, thus providing double protection for the stability and safety of the wire harness connection.

[0032] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A novel flow regulating structure for a hot end EGR valve of an automotive engine, characterized by, The system includes a mounting plate (1), a connecting pipe (2), an annular plate (4), and an EGR valve body (3). The mounting plate (1) and the annular plate (4) are fixedly connected to the arc surface of the connecting pipe (2). The EGR valve body (3) is slidably connected to the inner wall of the annular plate (4). A connecting plate (6) is fixedly connected to the arc surface of the EGR valve body (3), and the connecting plate (6) is slidably connected to one end of the annular plate (4). The arc surface of the EGR valve body (3) has a wiring port (5). One end of the annular plate (4) has a disassembly device (7), which includes two mounting slots (701) located at one end of the annular plate (4). Two mounting blocks are fixedly connected to the end of the connecting plate (6) near the annular plate (4). 702), the mounting block (702) is slidably connected to the inner wall of the mounting groove (701), the circular surface of the annular plate (4) has two circular holes (703), the circular holes (703) are connected to the mounting groove (701), the two mounting blocks (702) are provided with sliding grooves (704) on the side away from each other, the inner wall of the sliding groove (704) is fixedly connected to a first spring (705), the other end of the first spring (705) is fixedly connected to a round rod (706), the round rod (706) is slidably connected to the inner wall of the sliding groove (704), the size of the round rod (706) is adapted to the size of the circular hole (703), the inner wall of the circular hole (703) is slidably connected to a sliding rod (707), one end of the sliding rod (707) is fixedly connected to a round block (708).

2. The flow regulating structure of a novel hot end EGR valve for an automotive engine according to claim 1, characterized in that: The arc surface of the slide bar (707) is fitted with a second spring (709), and the two ends of the second spring (709) are fixedly connected to the annular plate (4) and the circular block (708) respectively.

3. The flow regulating structure of a novel hot end EGR valve for an automotive engine according to claim 1, characterized in that: The inner wall of the annular plate (4) is fixedly connected with a sealing gasket (715), which is made of silicone rubber, and the front end of the round rod (706) is arc-shaped.

4. The flow regulating structure of a novel hot end EGR valve for an automotive engine according to claim 1, characterized in that: The circular ring plate (4) is fixedly connected to the arc surface of the mounting plate (711). The upper surface of the mounting plate (711) is provided with a square groove (712). The inner wall of the square groove (712) is slidably connected to a square block (713). The mounting plate (711) is provided with sliding holes (714) on both sides. The square groove (712) communicates with the sliding holes (714). The arc surface of the circular block (708) is fixedly connected to an arc block (710). The other end of the arc block (710) passes through the sliding hole (714) and is fixedly connected to the square block (713).

5. The flow regulating structure of a novel hot end EGR valve for automotive engine according to claim 1, characterized in that: The upper surface of the wiring port (5) is provided with a clamping device (8). The clamping device (8) includes a fixing block (81). The fixing block (81) is fixedly connected to the upper surface of the wiring port (5). An L-shaped block (82) is fixedly connected to one side of the fixing block (81). Several third springs (83) are fixedly connected to the inner wall of the L-shaped block (82). A clamping plate (84) is fixedly connected to one end of the several third springs (83). The clamping plate (84) is slidably connected to one side of the fixing block (81).

6. The flow regulating structure of a novel hot end EGR valve for automotive engine according to claim 5, characterized in that: An arc-shaped frame (85) is fixedly connected to the inner wall of the L-shaped block (82), and a long rod (87) is slidably connected to the inner wall of the arc-shaped frame (85). A connecting block (86) is fixedly connected to the surface of the clamping plate (84), and the connecting block (86) is fixedly connected to the arc surface of the long rod (87).

7. The flow regulating structure of a novel hot end EGR valve for automotive engine according to claim 5, characterized in that: The inner wall of the clamping plate (84) is fixedly connected with an arc-shaped pad (88), which is an elastic body.

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