Search

CN-122014466-A - Air intake system, control method of air intake system, controller and vehicle

CN122014466ACN 122014466 ACN122014466 ACN 122014466ACN-122014466-A

Abstract

The application relates to the technical field of air intake systems, in particular to an air intake system, a control method of the air intake system, a controller and a vehicle, which are used for improving NVH performance of the air intake system. The air inlet system part comprises a muffler, an adjusting motor and an adjusting motor, wherein a movable partition plate is arranged in the muffler, the movable partition plate is used for partitioning the inner space of the muffler to form a resonant cavity, and the adjusting motor is in driving connection with the movable partition plate and is used for driving the movable partition plate to move according to the running working condition of a vehicle so as to change the volume of the resonant cavity.

Inventors

  • ZHU YONGCHENG
  • ZHU CHUANFENG

Assignees

  • 广州汽车集团股份有限公司

Dates

Publication Date
20260512
Application Date
20260310

Claims (14)

  1. 1. An air intake system, comprising: the silencer is internally provided with a movable partition board, and the movable partition board separates the internal space of the silencer to form a resonant cavity; and the adjusting motor is in driving connection with the movable partition plate and is used for driving the movable partition plate to move according to the running working condition of the vehicle so as to change the volume of the resonant cavity.
  2. 2. An air intake system according to claim 1, wherein a guide rail for defining a moving path of the movable partition is provided inside the muffler, and the movable partition is driven by the adjusting motor to slide along the guide rail.
  3. 3. An air intake system according to claim 2, wherein the guide rail is provided with a plurality of condition position holes for defining the movement positions of the movable partition under different operating conditions of the vehicle.
  4. 4. The air intake system of claim 1, further comprising a water-gas separation device and a water reservoir; The water storage part is provided with a plurality of water leakage holes, and the water storage part is communicated with the inside of the muffler through the plurality of water leakage holes; the water-gas separation device is arranged at the inlet of the muffler, and the water storage part is arranged on the muffler body and used for collecting water separated by the water-gas separation device.
  5. 5. The air intake system of claim 4, wherein a fluid passage for guiding the flow of moisture is provided inside the water storage part, and one end of the fluid passage communicates with the water leakage hole, and the other end communicates with the water storage chamber of the water storage part.
  6. 6. The air intake system of claim 4, wherein an external recycling drain valve is arranged at the bottom of the water storage part, a whole water tank interface valve and an air humidifier interface valve are arranged on the side surface of the water storage part, and the external recycling drain valve, the whole water tank interface valve and the air humidifier interface valve are respectively fixedly connected with the regulating motor.
  7. 7. A control method of an intake system, characterized by being applied to an intake system according to any one of claims 1 to 6, comprising: Identifying the current running condition of the vehicle; determining a target position of the movable partition according to the operation condition; and controlling the adjusting motor to drive the movable partition plate to move to the target position so as to adjust the volume of the resonant cavity.
  8. 8. The control method of claim 7, wherein the operating conditions include at least one of an idle condition, an acceleration condition, a deceleration condition, and a constant speed driving condition.
  9. 9. The control method according to claim 7, wherein the determining the target position of the movable partition includes: Based on a plurality of position identifiers calibrated in advance, matching the position identifiers corresponding to the current operation working conditions, and determining the position of the movable partition corresponding to the matched position identifiers as the target position; The plurality of position identifiers are obtained in advance by testing tail pipe noise frequency distribution of the vehicle under different operation conditions to analyze a frequency section of exhaust noise larger than preset noise, determining the positions of the movable partition plates of the corresponding muffler under each operation condition based on the frequency section, and recording the positions of the movable partition plates of the corresponding muffler under each operation condition by using different position identifiers.
  10. 10. The control method according to claim 7, characterized in that the method further comprises: and acquiring a load parameter of the vehicle, and adjusting the rotation rate of the water-air separation device based on the load parameter.
  11. 11. The control method of claim 10, wherein the adjusting the rotation rate of the water-gas separation device comprises: When the load parameter is increased, the rotation rate is increased; the rotation rate is reduced when the load parameter is reduced.
  12. 12. The control method according to any one of claims 7 to 11, characterized in that the method further comprises: And controlling the regulating motor to open/close the external recycling drain valve, or opening/closing the whole water tank interface valve or opening/closing the air humidifier interface valve according to a valve control instruction.
  13. 13. A controller comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that the processor implements the method of controlling an air intake system according to any one of claims 7-12 when executing the computer program.
  14. 14. A vehicle comprising an air intake system according to any one of claims 1 to 6, a controller according to claim 13.

Description

Air intake system, control method of air intake system, controller and vehicle Technical Field The embodiment of the application relates to the technical field of air inlet systems, in particular to an air inlet system, a control method of the air inlet system, a controller and a vehicle. Background In a vehicle powertrain, the air intake system serves an important function of directing air into the power unit and suppressing airflow noise. In order to reduce pulsation noise generated during the intake process, a muffler device is generally provided in the intake path, and noise of a specific frequency is attenuated by the muffler structure. However, in the existing intake system, the structure for attenuating intake noise is generally fixed. Because the vehicle has a plurality of complex working conditions in the running process, the air inlet frequency characteristics and the noise energy distribution under different working conditions have obvious differences. The fixed silencing structure can only be comprehensively balanced based on various expected working conditions in the design stage, and attempts are made to meet noise suppression requirements under different rotating speeds and loads, so that NVH (noise, vibration and harshness) performance of an air inlet system of a vehicle cannot reach an optimal state under specific operating conditions. Disclosure of Invention The embodiment of the application provides an air inlet system, a control method of the air inlet system, a controller and a vehicle, and aims to improve NVH performance of the air inlet system. An air intake system, comprising: the silencer is internally provided with a movable partition board, and the movable partition board separates the internal space of the silencer to form a resonant cavity; and the adjusting motor is in driving connection with the movable partition plate and is used for driving the movable partition plate to move according to the running working condition of the vehicle so as to change the volume of the resonant cavity. An air inlet system is provided, and dynamic adjustment of the volume of a resonant cavity is realized by arranging a movable baffle plate which can be driven by an adjusting motor in the silencer, so that the air inlet system is not limited to single static acoustic performance. Because the volume of resonant cavity can carry out accurate matching according to the real-time operation operating mode of vehicle, solved traditional fixed muffler and can only compromise comprehensive NVH performance and can't reach the optimal technical pain point under all operating modes, guaranteed that the vehicle can reach optimal control state in the tail pipe noise of admitting air under each operating mode to showing the NVH performance of admitting air of improving the vehicle, promoted driving environment's travelling comfort and market competition. In one implementation, a guide rail for defining the moving path of the movable partition is arranged inside the muffler, and the movable partition is driven by the adjusting motor to slide along the guide rail. By introducing the guide rail structure into the muffler, solid mechanical support and accurate path guiding are provided for the movable partition plate, lateral stress generated by air inlet pulsation on the partition plate is counteracted, mechanical shaking in the movement process of the partition plate is eliminated, physical precision and response stability of volume adjustment of the resonant cavity are remarkably improved, accurate matching of noise elimination frequency is ensured, meanwhile, a stable sliding mechanism reduces abrasion among moving parts, the service life of the adjusting mechanism is prolonged, and the sustainability of NVH performance of an air inlet system under all working conditions is further enhanced. In one implementation, the guide rail is provided with a plurality of working condition position holes, and the working condition position holes are used for limiting the moving positions of the movable partition plate under different operation working conditions of the vehicle. By providing a plurality of predefined operating condition position holes on the guide rail, continuous volume adjustment is converted into discrete, acoustically verified, accurate position stops. On one hand, physical hole sites are used for limiting, so that errors of the adjusting motor in the long-path moving process are greatly reduced, the muffler can reach a preset optimal muffling position instantly under different working conditions, and on the other hand, the NVH performance of the air inlet system is adjusted to have extremely high reliability and repeatability by solidifying acoustic optimal points of typical working conditions, so that the NVH performance of the air inlet system of the vehicle is effectively improved. In one implementation, the air intake system further includes a water-gas separation device and a water reservoir; The