Gasoline engine VTG supercharger assembly integrated test bench

Abstract

The utility model discloses a gasoline engine VTG supercharger assembly integrated test bench relates to gasoline engine spare part test equipment technical field. The utility model discloses a bottom plate is provided with damping assembly at the top of bottom plate, and the top of damping assembly is provided with bearing frame. The utility model has efficient longitudinal damping buffering capacity and stability guarantee mechanism, when the supercharger produces longitudinal vibration in high speed or working condition switching test, and bearing frame will move up and down with vibration, and simultaneously drives the stable rod extrusion damping spring, buffer plate extrusion damper, and the longitudinal vibration is directly buffered through the cooperation of both, avoids vibration transmission to the main body of test bench and ground, improves the stability of test bench itself, prevents the resonance with surrounding equipment, guarantees the normal operation of surrounding equipment, and the limiting sleeve of bearing frame both sides moves along the surface of side plate, further strengthens the overall stability of bearing frame, avoids the test bench shaking problem caused by vibration.

Description

Technical Field

[0001] This utility model belongs to the technical field of gasoline engine component testing equipment, and in particular relates to an integrated test bench for gasoline engine VTG turbocharger assembly. Background Technology

[0002] As a core component for improving the power performance and reducing fuel consumption of gasoline engines, the accurate testing of the performance parameters of the gasoline engine VTG (Variable Geometry Turbocharger) assembly is a key link in ensuring the overall quality of the gasoline engine. The gasoline engine VTG turbocharger assembly integrated test bench is a dedicated testing equipment, mainly used to simulate the operating state of the VTG turbocharger under different working conditions of the gasoline engine, and to comprehensively test key indicators such as turbocharger boost pressure, turbine speed, response lag time, and durability.

[0003] Currently available gasoline engine VTG turbocharger assembly integrated test benches typically consist of a main frame, VTG turbocharger mounting fixtures, a power simulation system, a data acquisition system, and a cooling and lubrication auxiliary system. The main frame is often welded from structural steel, and to ensure structural stability, it is usually directly fixed to the ground using rigid connectors. The VTG turbocharger mounting fixtures are mostly one-piece metal clamps, which rigidly lock the turbocharger to the designated test area on the main frame using bolts. However, in actual testing, the VTG turbocharger generates significant vibrations during high-speed operation and operating condition switching (such as simulated rapid acceleration and deceleration). Instantaneous impact torque has two main effects. First, the rigid connection structure of existing test benches lacks an effective shock absorption mechanism, and vibrations are directly transmitted to the main frame of the test bench and the ground. This not only reduces the overall stability of the test bench but also causes resonance with surrounding equipment, affecting the normal operation of the surrounding equipment. Second, the rigidly fixed turbocharger fixture cannot buffer or offset instantaneous impact torque. The huge torque will continue to act on the connection between the turbocharger and the fixture, which can easily cause loosening of connecting bolts, deformation of the fixture, and even cracking of the turbocharger housing and damage to the internal rotor shaft system, seriously affecting the accuracy of test data (such as vibration interference causing fluctuations in speed and pressure sensor data).

[0004] To address these issues, we provide a gasoline engine VTG turbocharger assembly integrated test bench. Utility Model Content

[0005] The purpose of this utility model is to provide an integrated test bench for gasoline engine VTG turbocharger assembly. Through the cooperation of shock-absorbing components and buffer components, it solves the problem that the existing gasoline engine turbocharger test bench has poor shock absorption performance, which not only leads to a decrease in the overall stability of the bench, but also causes resonance with surrounding equipment, affecting the normal operation of surrounding equipment.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution.

[0007] This utility model relates to an integrated test bench for a gasoline engine VTG turbocharger assembly, comprising a base plate, a shock-absorbing component on the top of the base plate, a load-bearing frame on the top of the shock-absorbing component, a bench assembly within the inner cavity of the load-bearing frame, the shock-absorbing component including a fixing frame, the bottom of the fixing frame being fixedly connected to the top of the base plate, a stabilizing rod being connected through the top of the fixing frame, the top of the stabilizing rod being fixedly connected to the bottom of the load-bearing frame, a buffer plate being fixedly connected to the bottom of the stabilizing rod, a damper being fixedly connected to the bottom of the buffer plate, a shock-absorbing spring being fixedly connected to the top of the fixing frame, side plates being fixedly connected to both sides of the top of the base plate, and limit sleeves being fixedly connected to the bottom of both sides of the load-bearing frame, the inner cavity of the limit sleeve being movably connected to the surface of the side plate.

[0008] The present invention is further configured such that the platform assembly includes a storage box, the bottom of which is fixedly connected to the bottom of the inner cavity of the load-bearing frame. A motor is fixedly connected to one side of the bottom of the inner cavity of the storage box, and a screw is fixedly connected to the output end of the motor. A threaded sleeve is threadedly connected to the surface of the screw, and a drive rod is movably connected to the top of the threaded sleeve. A lifting plate is movably connected to the top of the drive rod, and a buffer assembly is provided on the top of the lifting plate. A test chamber is provided on the top of the buffer assembly. When the motor is turned on, the output end of the motor drives the screw to rotate. While the screw rotates, it drives the threaded sleeve on its surface to move axially along the direction of the screw. The threaded sleeve drives one end of the drive rod to move, and the other end of the drive rod lifts the lifting plate to the top of the storage box. After the test is completed, the motor is restarted, and the output end of the motor drives the screw to reverse, thereby driving the lifting plate to move down and store the test chamber on the top of the lifting plate into the storage box.

[0009] The present invention is further configured such that the buffer assembly includes a groove, the groove being formed at the top of the lifting plate, a fixed plate being fixedly connected to the bottom of the inner cavity of the groove, shock-absorbing rods being fixedly connected to both sides of the fixed plate, the top of the fixed plate being fixedly connected to the bottom of the test chamber, buffer grooves being formed on both sides of the top of the lifting plate, a movable plate being movably connected to the inner cavity of the buffer groove, and damping springs being fixedly connected to both sides of the movable plate. When the booster test inside the test chamber generates vibration, the vibration will cause the fixed plate in the inner cavity of the groove and the movable plate in the inner cavity of the buffer groove to move left and right. When the fixed plate moves, it squeezes the shock-absorbing rods, and when the movable plate moves, it squeezes the damping springs. Under the combined action of the shock-absorbing rods and the damping springs, the lateral vibration generated during the booster test is buffered.

[0010] The present invention is further configured such that limiting seats are fixedly connected to both sides of the bottom of the inner cavity of the fixed frame, and limiting pads are fixedly connected to both sides of the bottom of the load-bearing frame. When the load-bearing frame is affected by the test chamber and generates longitudinal vibration, it will drive the limiting pads to move up and down. When the limiting pads move down, they contact the top of the limiting seats, which can prevent the bottom of the load-bearing frame from directly contacting the top of the fixed frame, thereby reducing the vibration amplitude of the load-bearing frame.

[0011] The present invention is further configured such that side plates are fixedly connected to both sides of the inner cavity of the storage box, and limit frames are fixedly connected to both sides of the bottom of the lifting plate. The slot on one side of the limit frame is movably connected to the surface of the side plate. The limit frame moves on the surface of the side plate as the lifting plate moves. The limiting structure composed of the side plate and the limit frame can improve the stability of the lifting plate when it moves up and down.

[0012] The present invention is further configured such that fixing rods are fixedly connected to both sides of the inner cavity of the fixing frame, and the surface of the fixing rods is connected to the through holes on the surface of the buffer plate. The buffer plate moves on the surface of the fixing rods, and the inner diameter of the through holes on the surface of the buffer plate is adapted to the diameter of the fixing rods. The limiting effect of the fixing rods can improve the stability of the buffer plate when it moves up and down.

[0013] The present invention is further configured such that storage slots are provided on both sides of the lifting plate, and a limiting plate is movably connected to the inner cavity of the storage slot. The bottom of the limiting plate contacts the top of the load-bearing frame. When the lifting plate rises to the top of the storage box, the limiting plate is rotated until its bottom contacts the top of the storage box. The two sets of limiting plates can improve the stability of the lifting plate at the top of the storage box and reduce the stress on the motor.

[0014] The present invention is further configured such that mounting plates are fixedly connected to both the front and back of the base plate, and mounting holes are provided on the surface of the mounting plates. Mounting bolts are screwed through the mounting holes on the surface of the mounting plates into the designated mounting surfaces, thereby installing and fixing the frame in the designated use position.

[0015] The present invention has the following beneficial effects.

[0016] 1. This utility model has a highly efficient longitudinal vibration damping and buffering capability and a stability guarantee mechanism. When the turbocharger generates longitudinal vibration during high-speed or operating condition switching tests, the load-bearing frame will move up and down with the vibration, synchronously driving the stabilizer bar to squeeze the damping spring and the buffer plate to squeeze the damper. Through the cooperation of the two, the longitudinal vibration is directly buffered, preventing the vibration from being transmitted to the main body of the test bench and the ground. This not only improves the stability of the test bench itself, but also prevents resonance with surrounding equipment, ensuring the normal operation of surrounding equipment. At the same time, the limiting sleeves on both sides of the load-bearing frame will move along the surface of the side plate, further strengthening the overall stability of the load-bearing frame and avoiding the problem of test bench shaking caused by vibration.

[0017] 2. Another major advantage of this utility model is that it can specifically buffer lateral vibration and instantaneous impact torque, protect the equipment and ensure the accuracy of test data. When the turbocharger test generates lateral vibration, the fixed plate in the groove will squeeze the damping rod, and the movable plate in the buffer groove will squeeze the damping spring. The two work together to effectively offset the instantaneous impact torque and prevent it from continuously acting on the connection between the turbocharger and the tooling, thereby reducing the risk of loose connecting bolts, tooling deformation, and even cracking of the turbocharger housing and damage to the internal rotor shaft system. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0019] Figure 1 This is a perspective view of an integrated test bench for a gasoline engine VTG turbocharger assembly.

[0020] Figure 2 This is a cross-sectional schematic diagram of the test chamber in an integrated test bench for a gasoline engine VTG turbocharger assembly.

[0021] Figure 3 A test bench for the integrated testing of a gasoline engine VTG turbocharger assembly. Figure 2 A magnified view of a portion of point A in the middle.

[0022] Figure 4 This is a cross-sectional schematic diagram of a storage box in an integrated test bench for a gasoline engine VTG turbocharger assembly.

[0023] Figure 5 A schematic diagram of the vibration damping component in an integrated test bench for a gasoline engine VTG turbocharger assembly. Figure 1 .

[0024] Figure 6 A schematic diagram of the vibration damping component in an integrated test bench for a gasoline engine VTG turbocharger assembly. Figure 2 .

[0025] Figure 7 This is a schematic diagram of the top of the base plate in an integrated test bench for a gasoline engine VTG turbocharger assembly.

[0026] In the attached diagram: 1. Base plate; 2. Shock absorption assembly; 3. Load-bearing frame; 4. Bench assembly; 201. Fixing frame; 202. Stabilizing bar; 203. Buffer plate; 204. Damper; 205. Shock-absorbing spring; 206. Side plate; 207. Limiting sleeve; 401. Storage box; 402. Motor; 403. Screw; 404. Threaded sleeve; 405. Drive rod; 406. Lifting plate; 407. Buffer assembly; 408. Test chamber; 4071. Groove; 4072. Fixing plate; 4073. Shock-absorbing bar; 4074. Buffer groove; 4075. Movable plate; 4076. Shock-absorbing spring. Detailed Implementation

[0027] The technical solutions of the present utility model will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0028] Please see Figure 1-7 This utility model is an integrated test bench for a gasoline engine VTG turbocharger assembly, including a base plate 1, a shock-absorbing component 2 on the top of the base plate 1, a load-bearing frame 3 on the top of the shock-absorbing component 2, and a bench assembly 4 inside the load-bearing frame 3. The shock-absorbing component 2 includes a fixed frame 201, the bottom of the fixed frame 201 is fixedly connected to the top of the base plate 1, a stabilizer bar 202 is connected through the top of the fixed frame 201, the top of the stabilizer bar 202 is fixedly connected to the bottom of the load-bearing frame 3, a buffer plate 203 is fixedly connected to the bottom of the stabilizer bar 202, a damper 204 is fixedly connected to the bottom of the buffer plate 203, a shock-absorbing spring 205 is fixedly connected to the top of the fixed frame 201, side plates 206 are fixedly connected to both sides of the top of the base plate 1, and limit sleeves 207 are fixedly connected to the bottom of both sides of the load-bearing frame 3, with the inner cavity of the limit sleeve 207 movably connected to the surface of the side plate 206.

[0029] Specifically: When the booster generates longitudinal vibration during the test chamber 408, the longitudinal vibration will cause the load-bearing frame 3 to move up and down. When the load-bearing frame 3 moves up and down, it will drive the stabilizer bar 202 to move and compress the damping spring 205. The movement of the stabilizer bar 202 will drive the buffer plate 203 to move. When the buffer plate 203 moves, it will compress the damper 204. Through the cooperation of the damping spring 205 and the damper 204, the longitudinal vibration transmitted from the load-bearing frame 3 can be buffered. As the load-bearing frame 3 moves up and down, the limiting sleeves 207 on both sides of the load-bearing frame 3 move on the surface of the side plate 206, thereby improving the overall stability of the load-bearing frame 3.

[0030] The test bench assembly 4 includes a storage box 401. The bottom of the storage box 401 is fixedly connected to the bottom of the inner cavity of the load-bearing frame 3. A motor 402 is fixedly connected to one side of the bottom of the inner cavity of the storage box 401. A screw 403 is fixedly connected to the output end of the motor 402. A threaded sleeve 404 is threadedly connected to the surface of the screw 403. A drive rod 405 is movably connected to the top of the threaded sleeve 404. A lifting plate 406 is movably connected to the top of the drive rod 405. A buffer assembly 407 is provided on the top of the lifting plate 406. A test chamber 408 is provided on the top of the buffer assembly 407. The buffer assembly 407 includes a groove 4071, which is opened on the top of the lifting plate 406. A fixing plate 4072 is fixedly connected to the bottom of the inner cavity of the groove 4071. Shock-absorbing rods 4073 are fixedly connected to both sides of the fixing plate 4072. The top of the fixing plate 4072 is fixedly connected to the bottom of the test chamber 408. The lifting plate 406... Both sides of the top are provided with buffer grooves 4074, and the inner cavity of the buffer groove 4074 is movably connected to a movable plate 4075. Both sides of the movable plate 4075 are fixedly connected to shock-absorbing springs 4076. Both sides of the bottom of the inner cavity of the fixed frame 201 are fixedly connected to limit seats. Both sides of the bottom of the load-bearing frame 3 are fixedly connected to limit pads. Both sides of the inner cavity of the storage box 401 are fixedly connected to side plates 206. Both sides of the bottom of the lifting plate 406 are fixedly connected to limit frames. The slot on one side of the limit frame is movably connected to the surface of the side plate 206. Both sides of the inner cavity of the fixed frame 201 are fixedly connected to fixed rods. The surface of the fixed rods is connected to the through holes on the surface of the buffer plate 203. Both sides of the lifting plate 406 are provided with storage grooves. The inner cavity of the storage groove is movably connected to a limit plate. The bottom of the limit plate is in contact with the top of the load-bearing frame 3. Both the front and back of the bottom plate 1 are fixedly connected to mounting plates. The surface of the mounting plates is provided with mounting holes.

[0031] Specifically: When motor 402 is turned on, its output drives screw 403 to rotate. Simultaneously, screw 403 drives threaded sleeve 404 on its surface to move axially along the direction of screw 403. Threaded sleeve 404 drives one end of drive rod 405 to move, and the other end of drive rod 405 lifts lifting plate 406 to the top of storage box 401. After the test is completed, motor 402 is restarted. Its output drives screw 403 to reverse, thereby driving lifting plate 406 to move downwards, raising the test chamber 406 on top of lifting plate 406. 8. When the booster inside the test chamber 408 vibrates during testing, the vibration will cause the fixed plate 4072 in the inner cavity of the groove 4071 and the movable plate 4075 in the inner cavity of the buffer groove 4074 to move left and right. When the fixed plate 4072 moves, it presses the shock absorber 4073. When the movable plate 4075 moves, it presses the damping spring 4076. Under the combined action of the shock absorber 4073 and the damping spring 4076, the lateral vibration generated during the booster test is buffered. When the load-bearing frame 3 is affected by the test chamber 408 and vibrates longitudinally, it will carry... The movable limiting pad moves up and down. When the limiting pad moves down, it contacts the top of the limiting seat, which can prevent the bottom of the load-bearing frame 3 from directly contacting the top of the fixed frame 201, thereby reducing the vibration amplitude of the load-bearing frame 3. The limiting frame moves on the surface of the side plate 206 as the lifting plate 406 moves. The limiting structure composed of the side plate 206 and the limiting frame can improve the stability of the lifting plate 406 when it moves up and down. The buffer plate 203 moves on the surface of the fixed rod. The inner diameter of the through hole on the surface of the buffer plate 203 is matched with the diameter of the fixed rod. The limiting effect of the fixed rod can... To improve the stability of the buffer plate 203 when it moves up and down, when the lifting plate 406 rises to the top of the storage box 401, the limiting plate is rotated until its bottom contacts the top of the storage box 401. The two sets of limiting plates can improve the stability of the lifting plate 406 at the top of the storage box 401, and at the same time reduce the stress on the motor 402. The mounting bolts are screwed into the mounting holes on the surface of the mounting plate and screwed into the designated mounting surface, thereby fixing the frame in the designated use position. The motor 402 is a Y2 series three-phase asynchronous motor, specifically model Y2-132M-4.

[0032] The working principle of this utility model is as follows: When the motor 402 is turned on, its output end drives the screw 403 to rotate. Simultaneously, the screw 403 rotates, driving the threaded sleeve 404 on its surface to move axially along the direction of the screw 403. The threaded sleeve 404 drives one end of the drive rod 405 to move, and the other end of the drive rod 405 lifts the lifting plate 406 to the top of the storage box 401. The gasoline engine turbocharger is then installed in the test chamber 408 for testing. When the turbocharger generates longitudinal vibration during testing within the test chamber 408, this vibration causes the load-bearing frame 3 to move up and down. This up-and-down movement of the load-bearing frame 3 causes the stabilizer bar 202 to move and compresses the damping spring 205. The movement of the stabilizer bar 202 causes the buffer plate 203 to move, and the movement of the buffer plate 203 compresses the damper 204. Through the cooperation of the damping spring 205 and the damper 204, the load-bearing frame 3 can effectively absorb vibrations. The longitudinal vibration is buffered. As the load-bearing frame 3 moves up and down, the limiting sleeves 207 on both sides of the load-bearing frame 3 move on the surface of the side plate 206, thereby improving the overall stability of the load-bearing frame 3. When the booster test inside the test chamber 408 generates vibration, the vibration will cause the fixed plate 4072 in the inner cavity of the groove 4071 and the movable plate 4075 in the inner cavity of the buffer groove 4074 to move left and right. When the fixed plate 4072 moves, it squeezes the shock-absorbing rod 4073. When the movable plate 4075 moves, it squeezes the damping spring 4076. Under the combined action of the shock-absorbing rod 4073 and the damping spring 4076, the lateral vibration generated during the booster test is buffered. After the test is completed, the motor 402 is restarted. The output end of the motor 402 drives the screw 403 to reverse, thereby driving the lifting plate 406 to move down and store the test chamber 408 on the top of the lifting plate 406 into the storage box 401.

[0033] The preferred embodiments of the present utility model disclosed above are only used to help illustrate the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to the specific implementation methods described. The present specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the present utility model, so that those skilled in the art can better understand and utilize the present utility model.

Claims

1. A test bench for integrated testing of a gasoline engine VTG turbocharger assembly, comprising a base plate (1), characterized in that: The bottom plate (1) is provided with a shock-absorbing component (2) at the top, and a load-bearing frame (3) is provided at the top of the shock-absorbing component (2). The inner cavity of the load-bearing frame (3) is provided with a platform assembly (4). The shock absorption assembly (2) includes a fixed frame (201), the bottom of which is fixedly connected to the top of the base plate (1), a stabilizer bar (202) is connected through the top of the fixed frame (201), the top of which is fixedly connected to the bottom of the load-bearing frame (3), a buffer plate (203) is fixedly connected to the bottom of the stabilizer bar (202), a damper (204) is fixedly connected to the bottom of the buffer plate (203), a shock-absorbing spring (205) is fixedly connected to the top of the fixed frame (201), side plates (206) are fixedly connected to both sides of the top of the base plate (1), and limit sleeves (207) are fixedly connected to the bottom of both sides of the load-bearing frame (3), with the inner cavity of the limit sleeve (207) movably connected to the surface of the side plate (206).

2. The integrated test bench for a gasoline engine VTG turbocharger assembly according to claim 1, characterized in that: The test bench assembly (4) includes a storage box (401), the bottom of which is fixedly connected to the bottom of the inner cavity of the load-bearing frame (3). A motor (402) is fixedly connected to one side of the bottom of the inner cavity of the storage box (401). A screw (403) is fixedly connected to the output end of the motor (402). A threaded sleeve (404) is threadedly connected to the surface of the screw (403). A drive rod (405) is movably connected to the top of the threaded sleeve (404). A lifting plate (406) is movably connected to the top of the drive rod (405). A buffer assembly (407) is provided on the top of the lifting plate (406). A test chamber (408) is provided on the top of the buffer assembly (407).

3. The integrated test bench for a gasoline engine VTG turbocharger assembly according to claim 2, characterized in that: The buffer assembly (407) includes a groove (4071) on the top of the lifting plate (406). A fixing plate (4072) is fixedly connected to the bottom of the inner cavity of the groove (4071). Shock-absorbing rods (4073) are fixedly connected to both sides of the fixing plate (4072). The top of the fixing plate (4072) is fixedly connected to the bottom of the test chamber (408). Buffer grooves (4074) are provided on both sides of the top of the lifting plate (406). A movable plate (4075) is movably connected to the inner cavity of the buffer groove (4074). Shock-absorbing springs (4076) are fixedly connected to both sides of the movable plate (4075).

4. The integrated test bench for a gasoline engine VTG turbocharger assembly according to claim 1, characterized in that: Limiting seats are fixedly connected to both sides of the bottom of the inner cavity of the fixed frame (201), and limiting pads are fixedly connected to both sides of the bottom of the load-bearing frame (3).

5. The integrated test bench for a gasoline engine VTG turbocharger assembly according to claim 2, characterized in that: The storage box (401) has side plates (206) fixedly connected to both sides of its inner cavity. The lifting plate (406) has limit frames fixedly connected to both sides of its bottom. The slot on one side of the limit frame is movably connected to the surface of the side plate (206).

6. The integrated test bench for a gasoline engine VTG turbocharger assembly according to claim 1, characterized in that: Both sides of the inner cavity of the fixing frame (201) are fixedly connected to fixing rods, and the surface of the fixing rods is connected to the through hole on the surface of the buffer plate (203).

7. The integrated test bench for a gasoline engine VTG turbocharger assembly according to claim 2, characterized in that: The lifting plate (406) has storage slots on both sides, and the inner cavity of the storage slot is movably connected to a limiting plate. The bottom of the limiting plate is in contact with the top of the load-bearing frame (3).

8. The integrated test bench for a gasoline engine VTG turbocharger assembly according to claim 1, characterized in that: The base plate (1) is fixedly connected to both the front and back sides with mounting plates, and mounting holes are provided on the surface of the mounting plates.

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