Engine electric auxiliary supercharging system for plateau area and vehicle

Abstract

The invention relates to the technical field of engines, and particularly discloses an engine electric auxiliary supercharging system for a plateau area and a vehicle, and the engine electric auxiliary supercharging system for the plateau area comprises an air inlet pipe assembly, an air filtering assembly, a driving fan and a controller. In the low-rotating-speed working condition, the first communicating opening communicates with the air inlet channel, the second communicating opening is disconnected from the air inlet channel, the controller controls the driving fan to supercharge the engine, air is filtered through the air filtering assembly and then is supercharged through the driving fan for the first time, and supercharged inlet air can be directly connected with an air inlet pipe of the engine through the first communicating opening; under the working condition of high rotating speed, the first communicating port and the second communicating port are both disconnected from the air inlet channel, and the controller controls the driving fan to pressurize the turbocharger; and in a reverse blowing working condition, the second communication port is communicated with the air inlet channel, the first communication port is disconnected from the air inlet channel, the controller controls and drives the fan to blow air reversely, and the atmosphere is sucked into the air filtering assembly and then discharged.

Description

Technical Field

[0001] This invention relates to the field of engine technology, and in particular to an electric auxiliary supercharging system and vehicle for use in high-altitude areas. Background Technology

[0002] Currently, dump trucks are prone to power loss due to reduced air pressure and insufficient engine air intake when entering high-altitude areas. Conventional exhaust turbochargers cannot meet the engine's air intake requirements. According to statistics, conventional engine configurations experience a power loss of over 15% at an altitude of 2800m and over 20% at an altitude of 3500m.

[0003] To address the aforementioned issues, various auxiliary supercharging methods exist, such as two-stage turbocharging and electric motor supercharging. Related patents disclose a method that uses a single-stage electric supercharger connected in series between the turbocharger and the engine to achieve two-stage intake supercharging. However, this structure increases system resistance and is ineffective at low engine speeds when the turbocharger is not engaged. Furthermore, the electric supercharger uses an electromagnetic clutch connection, placing it in a high-temperature gas region, making its installation difficult and its reliability poor. Summary of the Invention

[0004] The purpose of this invention is to provide an electric auxiliary supercharging system and vehicle for engines used in high-altitude areas, which can reduce intake resistance and increase intake flow.

[0005] On one hand, the present invention provides an electric auxiliary supercharging system for engines used in high-altitude areas. This system includes: an intake manifold assembly having an intake passage, a first connecting port, and a second connecting port. One end of the intake passage is connected to the engine's turbocharger. Both the first and second connecting ports are shunt-connected to the intake passage. The first connecting port is connected to the engine's intake manifold, and the second connecting port is connected to the atmosphere. An air filter assembly is connected to the other end of the intake passage. A drive fan is installed within the cavity of the air filter assembly. A controller is communicatively connected to the drive fan. In this configuration, the engine's electric auxiliary supercharging system has low-speed, high-speed, and backflush operating conditions. In the low-speed condition, the first connecting port is connected to the intake passage, and the second connecting port is disconnected from the intake passage; the controller controls the drive fan to boost the engine. In the high-speed condition, both the first and second connecting ports are disconnected from the intake passage; the controller controls the drive fan to boost the turbocharger. In the backflush condition, the second connecting port is connected to the intake passage, and the first connecting port is disconnected from the intake passage; the controller controls the drive fan to draw air into the air filter assembly.

[0006] As an optional technical solution for an electric auxiliary supercharging system for engines used in high-altitude areas, the intake pipe assembly includes a main intake pipe, a secondary intake pipe, and a path switching unit. The two ends of the main intake pipe are respectively connected to the turbocharger and the air filter assembly. The main intake pipe and the secondary intake pipe are connected. The main intake pipe has the intake channel, and the secondary intake pipe has a first connection port and a second connection port. The path switching unit is disposed on the secondary intake pipe to control the connection or disconnection between the first connection port or the second connection port and the intake channel.

[0007] As an optional technical solution for an electric auxiliary supercharging system for engines used in high-altitude areas, the path switching unit is a multi-way valve. The multi-way valve has three ports, which are respectively connected to the auxiliary intake pipe, the first connecting port, and the second connecting port.

[0008] As an optional technical solution for an electric auxiliary supercharging system for engines used in high-altitude areas, the intake manifold assembly also includes a first filter element, which is disposed inside the secondary intake manifold and located at the second connection port.

[0009] As an optional technical solution for an electric auxiliary supercharging system for engines used in high-altitude areas, the air filter assembly includes an end cover and an air filter structure disposed in the cavity of the end cover. The drive fan is installed in the cavity of the end cover, and the cavity of the end cover is connected to the other end of the intake pipe assembly. The air filter structure is used to filter the air.

[0010] As an optional technical solution for an electric auxiliary supercharging system for engines used in high-altitude areas, the air filter structure includes an air filter body and a second filter element. The air filter body is fitted onto the second filter element, and the air filter body has an air inlet that is connected to the atmosphere.

[0011] As an optional technical solution for an electric auxiliary supercharging system for engines used in high-altitude areas, the end cover includes a first cover and a second cover, which are detachably connected. The drive fan is detachably connected to the second cover, and the second cover has an opening that communicates with the other end of the air pipe assembly.

[0012] As an optional technical solution for an electric auxiliary supercharging system for engines used in high-altitude areas, the electric auxiliary supercharging system for engines also includes fasteners, through which the drive fan is connected to the second cover.

[0013] As an optional technical solution for an electric auxiliary supercharging system for engines used in high-altitude areas, the electric auxiliary supercharging system for engines also includes a pressure sensor, which is disposed in the intake manifold assembly and is used to detect the pressure in the intake passage. The controller is communicatively connected to the pressure sensor.

[0014] On the other hand, the present invention provides a vehicle including an electric auxiliary supercharging system for engines used in high-altitude areas, as described in any of the above embodiments.

[0015] The beneficial effects of this invention are as follows: This invention provides an electric auxiliary supercharging system for engines used in high-altitude areas. The system includes an intake manifold assembly, an air filter assembly, a drive fan, and a controller. The intake manifold assembly has an intake passage, a first connecting port, and a second connecting port. Using this electric auxiliary supercharging system for high-altitude areas, when the engine is operating at low speeds, the engine's built-in turbocharger is not engaged. The turbocharger impeller does not provide boost and instead increases intake resistance. At this time, the first connecting port is connected to the intake passage, and the second connecting port is disconnected. The controller controls the drive fan to boost the engine. Air filtered by the air filter assembly is first boosted by the drive fan. The boosted air can then be directly connected to the engine's intake manifold via the first connecting port, bypassing the resistance of the turbocharger and intercooler. When… When the engine is operating at high speed, both the first and second connecting ports are disconnected from the intake passage. The controller controls the drive fan to boost the turbocharger. After being filtered by the air filter assembly, the air is first boosted by the drive fan, then passes through the turbocharger, and finally is cooled by the intercooler before entering the engine. If it is determined that the resistance in the intake passage is too high and cleaning maintenance is required, the engine is put into reverse blowing mode. The second connecting port is connected to the intake passage, and the first connecting port is disconnected from the intake passage. The controller controls the drive fan to blow air in reverse, drawing in atmospheric air and then expelling it through the air filter assembly. Attached Figure Description

[0016] Figure 1 This is an exploded view of an electric auxiliary supercharging system for engines used in high-altitude areas, as described in an embodiment of the present invention.

[0017] In the picture: 1. Intake pipe assembly; 11. First connecting port; 12. Second connecting port; 13. Main intake pipe; 14. Auxiliary intake pipe; 15. Path switching unit; 16. First filter element; 2. Air filter assembly; 21. End cap; 211. First cover; 212. Second cover; 22. Air filter structure; 221. Air filter body; 2211. Air inlet; 222. Second filter element; 3. Drive the fan; 4. Pressure sensor. Detailed Implementation

[0018] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions. Furthermore, "above," "on top of," and "over" the first feature in relation to the second feature includes the first feature directly above and diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "under," and "below" the first feature in relation to the second feature includes the first feature directly below and diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0020] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0021] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. 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.

[0022] like Figure 1As shown, this embodiment provides an electric auxiliary supercharging system for engines used in high-altitude areas. This system includes an intake manifold assembly 1, an air filter assembly 2, a drive fan 3, and a controller. The intake manifold assembly 1 has an intake passage, a first connecting port 11, and a second connecting port 12. One end of the intake passage can connect to the engine's turbocharger. Both the first connecting port 11 and the second connecting port 12 are configurably connected to the intake passage. The first connecting port 11 connects to the engine's intake manifold, and the second connecting port 12 connects to the atmosphere. The air filter assembly 2 connects to the other end of the intake passage. The drive fan 3 is installed within the cavity of the air filter assembly 2. The controller is communicatively connected to the drive fan 3. The electric auxiliary supercharging system for engines has... There are low-speed, high-speed, and backflush operating conditions. In the low-speed condition, the first connecting port 11 is connected to the intake passage, and the second connecting port 12 is disconnected from the intake passage. The controller controls the drive fan 3 to boost the engine. In the high-speed condition, both the first connecting port 11 and the second connecting port 12 are disconnected from the intake passage. The controller controls the drive fan 3 to boost the turbocharger. In the backflush condition, the second connecting port 12 is connected to the intake passage, and the first connecting port 11 is disconnected from the intake passage. The controller controls the drive fan 3 to draw air into the air filter assembly 2.

[0023] The electric auxiliary supercharging system for engines used in high-altitude areas according to the present invention addresses the issue that when the engine is operating at low speeds, the engine's built-in turbocharger is not engaged. The turbocharger impeller does not provide boosting and instead increases intake resistance. In this case, the first connection port 11 is connected to the intake passage, and the second connection port 12 is disconnected. The controller controls the drive fan 3 to boost the engine. Air filtered by the air filter assembly 2 is first boosted by the drive fan 3. The boosted air can then be directly connected to the engine's intake manifold via the first connection port 11, bypassing the resistance of the turbocharger and intercooler. When the engine is running... When the engine is operating at high speed, both the first connecting port 11 and the second connecting port 12 are disconnected from the intake passage. The controller controls the drive fan 3 to boost the turbocharger. After the air is filtered by the air filter assembly 2, it is first boosted by the drive fan 3, then passes through the turbocharger, and is cooled by the intercooler before entering the engine. If it is determined that the resistance in the intake passage is too high and cleaning maintenance is required, the engine is put into reverse blowing mode. The second connecting port 12 is connected to the intake passage, and the first connecting port 11 is disconnected from the intake passage. The controller controls the drive fan 3 to blow air in reverse, drawing in the air filter assembly 2 and then discharging it.

[0024] Low speed is below 1000 RPM, and high speed is above 1000 RPM.

[0025] In some embodiments, the intake manifold assembly 1 includes a main intake manifold 13, a secondary intake manifold 14, and a flow switching unit 15. The two ends of the main intake manifold 13 are connected to a turbocharger and an air filter assembly 2, respectively, connecting the main intake manifold 13 and the secondary intake manifold 14. The main intake manifold 13 has an intake passage, and the secondary intake manifold 14 has a first connection port 11 and a second connection port 12. The flow switching unit 15 is disposed on the secondary intake manifold 14, allowing the flow switching unit 15 to control the connection / disconnection between the first connection port 11 or the second connection port 12 and the intake passage.

[0026] In this embodiment, the pathway switching unit 15 includes, but is not limited to, a multi-way valve. The multi-way valve has three ports, which are respectively connected to the auxiliary intake pipe 14, the first connecting port 11, and the second connecting port 12. By setting the multi-way valve, the connection between the three ports and the auxiliary intake pipe 14, the first connecting port 11, and the second connecting port 12 can be adjusted according to actual needs. The controller is communicatively connected to the multi-way valve to control its operation.

[0027] In some embodiments, the intake manifold assembly 1 further includes a first filter element 16. The first filter element 16 is disposed within the secondary intake manifold 14 and located at the second connecting port 12. This arrangement prevents impurities from entering the second connecting port 12.

[0028] In this embodiment, the air filter assembly 2 includes an end cap 21 and an air filter structure 22 disposed within the cavity of the end cap 21. A drive fan 3 is installed within the cavity of the end cap 21, and the cavity of the end cap 21 is connected to the other end of the air intake pipe assembly 1. The air filter structure 22 is used to filter the air.

[0029] Furthermore, the air filtration structure 22 includes an air filter body 221 and a second filter element 222. The air filter body 221 is fitted onto the second filter element 222. The air filter body 221 has an air inlet 2211 that communicates with the atmosphere. The second filter element 222 can filter the air entering from the air inlet 2211.

[0030] In some embodiments, the end cap 21 includes a first cover 211 and a second cover 212. The first cover 211 and the second cover 212 are detachably connected, which facilitates installation and disassembly; and the drive fan 3 is detachably connected to the second cover 212, which facilitates maintenance of the drive fan 3; the second cover 212 has an opening, thereby enabling the second cover 212 to communicate with the other end of the air tube assembly.

[0031] Furthermore, the engine's electric auxiliary supercharging system also includes fasteners, through which the drive fan 3 is connected to the second cover 212. This facilitates the installation and removal of the drive fan 3. The fasteners are bolts.

[0032] In this embodiment, the engine electric auxiliary supercharging system also includes a pressure sensor 4, which is disposed in the intake manifold assembly 1. The pressure sensor 4 can detect the pressure in the intake passage, and the controller is communicatively connected to the pressure sensor 4.

[0033] This embodiment also provides a vehicle including the electric auxiliary supercharging system for engines used in high-altitude areas as described above. In the vehicle using this invention, when the engine is operating at low speeds, the engine's built-in turbocharger is not engaged. The turbocharger impeller does not provide boosting and instead increases intake resistance. At this time, the first connection port 11 is connected to the intake passage, and the second connection port 12 is disconnected from the intake passage. The controller controls the drive fan 3 to boost the engine. After the air is filtered by the air filter assembly 2, it is first boosted by the drive fan 3. The boosted intake air can be directly connected to the engine's intake pipe through the first connection port 11, bypassing the resistance of the turbocharger and intercooler. When the engine is operating at high speeds... At this time, both the first connecting port 11 and the second connecting port 12 are disconnected from the intake passage. The controller controls the drive fan 3 to pressurize the turbocharger. After the air is filtered by the air filter assembly 2, it is first pressurized by the drive fan 3, then passes through the turbocharger, and then is cooled by the intercooler before entering the engine. If it is determined that the resistance in the intake passage is too high and cleaning and maintenance are required, the engine is put into reverse blowing mode. The second connecting port 12 is connected to the intake passage, and the first connecting port 11 is disconnected from the intake passage. The controller controls the drive fan 3 to blow air in reverse, drawing in the air filter assembly 2 and then discharging it.

[0034] The electric auxiliary supercharging system for engines used in high-altitude areas of the present invention can select whether the electric auxiliary supercharging system for engines used in high-altitude areas participates in operation and the corresponding operating mode based on the driver's decision. The control method is as follows: 1. For engines used in high-altitude areas, the electric auxiliary supercharging system is in a non-operating state by default. The drive fan is not powered, and both the first and second connectors are disconnected from the intake passage. At this time, the engine intake system operates in the conventional mode.

[0035] 2. The driver actively controls the electric auxiliary boost switch to turn on. The controller detects and analyzes the engine speed signal and intake pressure signal, and determines whether auxiliary boost is needed based on the preset intake pressure. If the controller determines that the turbocharger has not engaged and the intake pressure is insufficient, it connects the first connector to the intake passage and starts the drive fan. Air passes through the air filter assembly, electric auxiliary boost, intake manifold, multi-way valve, and engine intake manifold. The drive fan adjusts its speed according to the input signal until the intake pressure reaches the preset requirement.

[0036] 3. If the controller determines that the turbocharger has engaged and the intake pressure is insufficient, both the first and second connecting ports will be disconnected from the intake passage and the drive fan will be started. Air passes through the air filter assembly, electric auxiliary booster, intake pipe, and turbocharger. The drive fan adjusts its speed according to the input signal until the intake pressure reaches the preset requirement.

[0037] 4. If the intake pressure detection resistance is too high, the controller sends an alarm signal to the cab. The driver opens the front cover of the air filter assembly and actively selects the dust cleaning mode. At this time, the engine stops working, the controller connects the second connector to the intake passage and sends a reverse command to the drive fan. The drive fan reverses at full speed, and air passes through the multi-way valve, intake manifold assembly, electric auxiliary booster, air filter assembly, and then enters the atmosphere. The drive fan stops operating after reaching the preset time.

[0038] The advantages of this invention are as follows: 1. By utilizing the combination of the drive fan and the multi-way valve, the corresponding airflow path can be selected according to the working conditions of different scenarios, effectively reducing intake resistance, increasing intake flow, and improving engine power in high-altitude environments.

[0039] The drive fan is integrated with the end cap of the air filter assembly, saving space and cost. At the same time, the drive fan is installed after the air filter assembly and before the turbocharger, which can effectively avoid damage to electrical components from air impurities and high temperatures.

[0040] 4. The drive fan has a reverse function, which can assist the air filter components in cleaning and reduce system resistance.

[0041] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. An electric auxiliary supercharging system for engines used in high-altitude areas, characterized in that, include: The intake manifold assembly (1) has an intake passage, a first connecting port (11) and a second connecting port (12). One end of the intake passage can be connected to the turbocharger of the engine. The first connecting port (11) and the second connecting port (12) can be connected to the intake passage. The first connecting port (11) can be connected to the intake manifold of the engine, and the second connecting port (12) can be connected to the atmosphere. Air filter assembly (2) is connected to the other end of the air intake channel; Drive the fan (3), which is installed in the cavity of the air filter assembly (2); The controller is communicatively connected to the drive fan (3); The engine electric auxiliary supercharging system has low-speed operation, high-speed operation and backflush operation. In the low-speed operation, the first connecting port (11) is connected to the intake channel and the second connecting port (12) is disconnected from the intake channel. The controller controls the drive fan (3) to boost the engine. In the high-speed operation, both the first connecting port (11) and the second connecting port (12) are disconnected from the intake channel. The controller controls the drive fan (3) to boost the turbocharger. In the backflush operation, the second connecting port (12) is connected to the intake channel and the first connecting port (11) is disconnected from the intake channel. The controller controls the drive fan (3) to draw air into the air filter assembly (2).

2. The electric auxiliary supercharging system for engines used in high-altitude areas according to claim 1, characterized in that, The intake pipe assembly (1) includes a main intake pipe (13), a secondary intake pipe (14), and a path switching unit (15). The two ends of the main intake pipe (13) are respectively connected to the turbocharger and the air filter assembly (2). The main intake pipe (13) and the secondary intake pipe (14) are connected. The main intake pipe (13) has the intake channel. The secondary intake pipe (14) has a first connection port (11) and a second connection port (12). The path switching unit (15) is disposed on the secondary intake pipe (14) to control the connection and disconnection between the first connection port (11) or the second connection port (12) and the intake channel.

3. The electric auxiliary supercharging system for engines used in high-altitude areas according to claim 2, characterized in that, The path switching unit (15) is a multi-way valve with three ports, which are respectively connected to the auxiliary air intake pipe (14), the first connecting port (11) and the second connecting port (12).

4. The electric auxiliary supercharging system for engines used in high-altitude areas according to claim 2, characterized in that, The intake pipe assembly (1) further includes a first filter element (16), which is disposed in the secondary intake pipe (14) and located at the second connection port (12).

5. The electric auxiliary supercharging system for engines used in high-altitude areas according to claim 1, characterized in that, The air filter assembly (2) includes an end cap (21) and an air filter structure (22) disposed in the cavity of the end cap (21). The drive fan (3) is installed in the cavity of the end cap (21). The cavity of the end cap (21) is connected to the other end of the air intake pipe assembly (1). The air filter structure (22) is used to filter the air.

6. The electric auxiliary supercharging system for engines used in high-altitude areas according to claim 5, characterized in that, The air filtration structure (22) includes an air filter body (221) and a second filter element (222). The air filter body (221) is fitted onto the second filter element (222). The air filter body (221) has an air inlet (2211) that is connected to the atmosphere.

7. The electric auxiliary supercharging system for engines used in high-altitude areas according to claim 5, characterized in that, 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 drive fan (3) is detachably connected to the second cap (212), the second cap (212) has an opening, and the opening is connected to the other end of the air pipe assembly.

8. The electric auxiliary supercharging system for engines used in high-altitude areas according to claim 7, characterized in that, The engine electric auxiliary supercharging system also includes fasteners, through which the drive fan (3) is connected to the second cover (212).

9. The electric auxiliary supercharging system for engines used in high-altitude areas according to claim 1, characterized in that, The engine electric auxiliary supercharging system also includes a pressure sensor (4), which is located on the intake manifold assembly (1) and is used to detect the pressure in the intake passage. The controller is communicatively connected to the pressure sensor (4).

10. A vehicle, characterized in that, Includes the electric auxiliary supercharging system for engines used in high-altitude areas as described in any one of claims 1-9.

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