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CN-122014402-A - Engine electric auxiliary supercharging system for plateau region and vehicle

CN122014402ACN 122014402 ACN122014402 ACN 122014402ACN-122014402-A

Abstract

The invention relates to the technical field of engines, and particularly discloses an engine electric auxiliary pressurizing system and a vehicle for a plateau region. The air filter is characterized in that the first communication port is communicated with the air inlet channel under the working condition of low rotation speed, the second communication port is disconnected with the air inlet channel, the controller controls the driving fan to boost the air for the engine, the air is filtered by the air filter assembly and then is subjected to primary boosting through the driving fan, the boosted air inlet can be directly connected with the air inlet pipe of the engine through the first communication port, under the working condition of high rotation speed, both the first communication port and the second communication port are disconnected with the air inlet channel, the controller controls the driving fan to boost the air for the turbocharger, during the back blowing working condition, the second communication port is communicated with the air inlet channel, the first communication port is disconnected with the air inlet channel, and the controller controls the driving fan to reversely blow air, so that the air is sucked into the air filter assembly and then is discharged.

Inventors

  • XU ZISHUN
  • SHEN HONGXIA
  • MA XIANGMING
  • ZHANG JIAN
  • ZHANG JINGKE
  • Lv Kangmin

Assignees

  • 一汽解放青岛汽车有限公司

Dates

Publication Date
20260512
Application Date
20260323

Claims (10)

  1. 1. An engine electric assist boost system for a plateau region, comprising: An air inlet pipe assembly (1) which is provided with an air inlet channel, a first communication port (11) and a second communication port (12), wherein one end of the air inlet channel can be communicated with a turbocharger of an engine, the first communication port (11) and the second communication port (12) can be communicated with the air inlet channel in an on-off way, the first communication port (11) can be communicated with an air inlet pipe of the engine, and the second communication port (12) can be communicated with the atmosphere; An air filter assembly (2) communicated with the other end of the air inlet channel; A driving fan (3) arranged in the cavity of the air filtering component (2); The controller is in communication connection with the driving fan (3); The electric auxiliary supercharging system of the engine is provided with a low-rotation-speed working condition, a high-rotation-speed working condition and a back blowing working condition, wherein in the low-rotation-speed working condition, the first communication port (11) is communicated with the air inlet channel, the second communication port (12) is disconnected with the air inlet channel, the controller controls the driving fan (3) to supercharge the engine, in the high-rotation-speed working condition, the first communication port (11) and the second communication port (12) are disconnected with the air inlet channel, the controller controls the driving fan (3) to supercharge the turbocharger, in the back blowing working condition, the second communication port (12) is communicated with the air inlet channel, the first communication port (11) is disconnected with the air inlet channel, and the controller controls the driving fan (3) to suck the atmosphere into the air filtering assembly (2).
  2. 2. The electric auxiliary boost system for an engine in a plateau region according to claim 1, wherein the intake pipe assembly (1) includes a main intake pipe (13), an auxiliary intake pipe (14), and a passage switching unit (15), both ends of the main intake pipe (13) are respectively communicated with the turbocharger and the air filtering assembly (2), the main intake pipe (13) and the auxiliary intake pipe (14) are communicated, the main intake pipe (13) has the intake passage, the auxiliary intake pipe (14) has the first communication port (11) and the second communication port (12), and the passage switching unit (15) is provided to the auxiliary intake pipe (14) to control on-off between the first communication port (11) or the second communication port (12) and the intake passage.
  3. 3. The electric auxiliary boost system for an engine in a plateau region according to claim 2, wherein the passage switching unit (15) is a multi-way valve having three ports that communicate with the sub-intake pipe (14), the first communication port (11), and the second communication port (12), respectively.
  4. 4. The electric auxiliary boost system for engines in plateau areas according to claim 2, characterized in that said intake pipe assembly (1) further comprises a first filter element (16), said first filter element (16) being arranged inside said secondary intake pipe (14) and at said second communication port (12).
  5. 5. The electric auxiliary pressurizing system for an engine in a plateau region according to claim 1, wherein the air filtering assembly (2) comprises an end cover (21) and an air filtering structure (22) arranged in a cavity of the end cover (21), the driving fan (3) is installed in the cavity of the end cover (21), the cavity of the end cover (21) is communicated with the other end of the air inlet pipe assembly (1), and the air filtering structure (22) is used for filtering air.
  6. 6. The electric auxiliary boost system for an engine in a plateau region according to claim 5, wherein said air filtering structure (22) comprises an air filtering body (221) and a second filter element (222), said air filtering body (221) being sleeved on said second filter element (222), said air filtering body (221) having an air inlet (2211), said air inlet (2211) being in communication with the atmosphere.
  7. 7. The electric auxiliary boost system for an engine in a plateau region according to claim 5, wherein the end cap (21) includes a first cap (211) and a second cap (212), the first cap (211) and the second cap (212) are detachably connected, the driving fan (3) is detachably connected with the second cap (212), and the second cap (212) has an opening communicating with the other end of the air pipe assembly.
  8. 8. The electric auxiliary boost system for an engine for a plateau as recited in claim 7, characterized in that it further includes a fastener by which the driving fan (3) is connected with the second cover (212).
  9. 9. The electric auxiliary boost system for an engine for a plateau region according to claim 1, further comprising a pressure sensor (4), the pressure sensor (4) being provided to the intake pipe assembly (1) and being configured to detect a pressure in the intake passage, the controller being communicatively connected to the pressure sensor (4).
  10. 10. A vehicle comprising an engine electric assist boost system for a plateau region as claimed in any one of claims 1 to 9.

Description

Engine electric auxiliary supercharging system for plateau region and vehicle Technical Field The invention relates to the technical field of engines, in particular to an engine electric auxiliary supercharging system for a plateau area and a vehicle. Background At present, after a dump truck enters a plateau area, the problem of power reduction caused by insufficient air inlet of an engine due to air pressure reduction easily occurs, and the conventional waste turbocharging cannot meet the air inlet requirement of the engine. According to data statistics, the conventional engine scheme is powered down by more than 15% at the altitude of 2800m and by more than 20% at the altitude of 3500 m. In order to solve the above problems, there are various auxiliary pressurization modes, such as two-stage turbocharging, electric motor pressurization, etc. In the related patent, a series connection of one-stage electric supercharging between turbocharging and an engine is disclosed to realize two-stage supercharging of intake air. In addition, the electric booster is connected by adopting an electromagnetic clutch, is positioned in a high-temperature gas area, is difficult to arrange and has poor reliability. Disclosure of Invention The invention aims to provide an engine electric auxiliary supercharging system and a vehicle for a plateau region, which can reduce air inlet resistance and increase air inlet flow. The invention provides an engine electric auxiliary pressurizing system for a plateau region, which comprises an air inlet pipe assembly, a driving fan, a controller and a controller, wherein the air inlet pipe assembly is provided with an air inlet channel, a first communication port and a second communication port, one end of the air inlet channel can be communicated with a turbocharger of the engine, the first communication port and the second communication port are both communicated with the air inlet channel in an on-off mode, the first communication port can be communicated with the air inlet pipe of the engine, the second communication port can be communicated with the atmosphere, the air filtering assembly is communicated with the other end of the air inlet channel, the driving fan is arranged in a cavity of the air filtering assembly, the controller is in communication connection with the driving fan, the engine electric auxiliary pressurizing system is provided with a low-rotation-speed working condition, a high-rotation-speed working condition and a back-blowing working condition, the first communication port is communicated with the air inlet channel, the controller controls the driving fan to be the engine, the high-rotation-speed working condition and the second communication port is disconnected with the air inlet channel, and the controller controls the driving fan to be communicated with the turbocharger. As an alternative technical scheme of the electric auxiliary supercharging system for the engine in the plateau region, the air inlet pipe assembly comprises a main air inlet pipe, an auxiliary air inlet pipe and a passage switching unit, two ends of the main air inlet pipe are respectively communicated with the turbocharger and the air filtering assembly, the main air inlet pipe is communicated with the auxiliary air inlet pipe, the main air inlet pipe is provided with an air inlet channel, the auxiliary air inlet pipe is provided with a first communication port and a second communication port, and the passage switching unit is arranged in the auxiliary air inlet pipe so as to control the on-off of the first communication port or the second communication port and the air inlet channel. As an alternative technical scheme of the electric auxiliary pressurizing system for the engine in the plateau region, the passage switching unit is a multi-way valve, the multi-way valve is provided with three ports, and the three ports are respectively communicated with the auxiliary air inlet pipe, the first communication port and the second communication port. As an alternative technical scheme of the electric auxiliary pressurizing system for the engine in the plateau region, the air inlet pipe assembly further comprises a first filter element, and the first filter element is arranged in the auxiliary air inlet pipe and is positioned at the second communication port. As the optional technical scheme of the engine electric auxiliary pressurizing system for the plateau area, the air filtering assembly comprises an end cover and an air filtering structure arranged in the cavity of the end cover, the driving fan is arranged in the cavity of the end cover, the cavity of the end cover is communicated with the other end of the air inlet pipe assembly, and the air filtering structure is used for filtering air. As an alternative technical scheme for the electric auxiliary pressurizing system of the engine in the plateau area, the air filtering structure comprises an air filtering main body and a second filter eleme