Supercharger and air suspension air supply system

Abstract

The application discloses a supercharger, which comprises a gas pump and a motor, wherein the gas pump comprises a shell, four piston connecting rod assemblies and an eccentric shaft which are installed in the shell, four cylinders are arranged in the shell, one end of each piston connecting rod assembly is movably arranged in each cylinder, the other end of each piston connecting rod assembly is connected to the eccentric shaft, and the motor is connected to the eccentric shaft and used for driving the eccentric shaft to rotate to compress air. The supercharger of the application increases a first-order frequency and can effectively reduce exhaust noise. The application also relates to an air supply system of an air suspension.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of supercharger, in particular to a supercharger and an air supply system of air suspension. BACKGROUND

[0002] Passenger cars or commercial vehicles use air spring air supply systems to change the height of the vehicle body and adjust the stiffness or damping of the suspension, thereby improving the passability and comfort of the vehicle. High-pressure air needs to be filled into the air bag of the air spring of the air spring air supply system to complete the support of the vehicle, and the high-pressure air in the air bag also needs to be discharged when the height of the vehicle body is lowered. The existing air spring air supply system includes a supercharger, an air tank and a plurality of air spring air bags, the supercharger is connected to the air tank and the plurality of air spring air bags through air pipes respectively, and the supercharger is used to deliver high-pressure air to the air tank and the plurality of air spring air bags. The existing supercharger adopts a two-cylinder piston connecting rod mechanism or a three-cylinder piston connecting rod mechanism, and both the two-cylinder and the three-cylinder have the following shortcomings:

[0003] First, the vibration is unbalanced, and the first-order modal frequency is low, which is difficult to eliminate the vibration noise on the whole vehicle.

[0004] Second, due to the small number of cylinders, in order to increase the displacement, the stroke is designed to be large, which increases the overall size of the product. SUMMARY

[0005] Therefore, the present application provides a supercharger, which increases the first-order frequency and can effectively reduce the exhaust noise.

[0006] A supercharger includes a gas pump and a motor, the gas pump includes a shell, four piston connecting rod assemblies and an eccentric shaft installed in the shell, four cylinders are arranged in the shell, one end of each piston connecting rod assembly is movably arranged in each cylinder, the other end of each piston connecting rod assembly is connected to the eccentric shaft, and the motor is connected to the eccentric shaft. The motor is used to drive the eccentric shaft to rotate to compress air. The supercharger of the present application adopts a four-cylinder small-stroke arrangement, which can effectively reduce the exhaust noise without increasing the size.

[0007] In the embodiment of the present application, the two said cylinders are arranged symmetrically up and down, and the other two said cylinders are arranged symmetrically left and right; the four said piston connecting rod assemblies are arranged in a cross around the said eccentric shaft. The structure arrangement of the four cylinders and the four piston connecting rod assemblies of the present application has good longitudinal balance and small vibration.

[0008] In the embodiment of the present application, each said piston connecting rod assembly includes a connecting rod, a piston ring and an air inlet valve, the connecting rod includes opposite first and second ends, the first end is connected to the eccentric shaft, the second end is arranged in the cylinder, and the piston ring and the air inlet valve are connected to the second end.

[0009] In the embodiment of the present application, the eccentric shaft is provided with a bearing, the first end is provided with a clamping groove, the outer ring of the bearing is installed in the clamping groove, the first end is provided with a fixed block protruding along the axial direction of the eccentric shaft, the fixed blocks of the four connecting rods are arranged at 90 degrees around the eccentric shaft, and the four fixed blocks are connected by a clamping spring.

[0010] In the embodiment of the present application, the first end is tapered, and the width of the first end gradually decreases towards the direction close to the eccentric shaft. The tapered first end of the present application can avoid interference between adjacent two connecting rods.

[0011] In the embodiment of the present application, the shell is provided with four installation channels, and the four air cylinders are installed in the four installation channels respectively, the air pump further comprises four exhaust valves, and the four exhaust valves are installed in the installation channels respectively, and each exhaust valve is connected with each air cylinder.

[0012] In the embodiment of the present application, the exhaust valve comprises an exhaust cover, an exhaust seat and an exhaust valve piece, the exhaust cover is arranged opposite to the exhaust seat, the exhaust valve piece is arranged on the exhaust seat, the exhaust cover is connected in the installation channel, the exhaust seat is connected with the air cylinder, the side close to the exhaust seat of the exhaust cover is provided with a fixed cylinder, the exhaust seat is provided with a through hole communicated with the air cylinder, the exhaust valve piece comprises a fixed part and a movable part connected oppositely, the fixed cylinder abuts on the fixed part, the movable part covers the through hole, and the gas in the air cylinder can push the movable part to make the inner cavity of the fixed cylinder communicated with the air cylinder. The exhaust valve of the present application does not need to be provided with a limiting support for limiting the exhaust cover and the exhaust valve piece, and the manufacturing cost can be reduced.

[0013] In the embodiment of the present application, the side wall of the fixed cylinder is provided with a perforation, the perforation is communicated between the installation channel and the inner cavity of the fixed cylinder, and the shell is provided with an exhaust channel communicated with the installation channel.

[0014] In the embodiment of the present application, the side close to the exhaust seat of the exhaust cover is further provided with a limiting cylinder, the limiting cylinder is located in the fixed cylinder, the end part of the limiting cylinder is arranged in interval with the movable part, and the gas in the air cylinder can push the movable part to abut on the end part of the limiting cylinder. The limiting cylinder of the present application can limit the movable part.

[0015] The present application also relates to a gas supply system of an air suspension, comprising the above-mentioned supercharger.

[0016] The eccentric shaft of the supercharger of the application has one piston connecting rod assembly complete a compression gas every 90° rotation, and four piston connecting rod assemblies complete a compression air every one rotation, thereby improving the displacement of the supercharger and increasing the first order frequency of the supercharger. The supercharger of the application adopts four-cylinder small stroke arrangement, which can effectively reduce the exhaust noise. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a structural schematic diagram of the supercharger of the application.

[0018] Figure 2 is a structural schematic diagram of the supercharger of the application along a first direction.

[0019] Figure 3 is a structural schematic diagram of the supercharger of the application along a second direction.

[0020] Figure 4 is a structural schematic diagram of the supercharger of the application without the shell.

[0021] Figure 5 is a structural schematic diagram of the piston connecting rod assembly and the eccentric shaft of the application.

[0022] Figure 6 is a partial structural schematic diagram of the piston connecting rod assembly. Figure 5

[0023] Figure 7 is a structural schematic diagram of the exhaust valve of the application.

[0024] Figure 8 is a structural schematic diagram of the air supply system of the air suspension of the application. DETAILED DESCRIPTION

[0025] The following describes the embodiments of the application by specific examples, and those skilled in the art can easily understand other advantages and effects of the application from the content disclosed in the description.

[0026] In the following description, reference is made to the accompanying drawings, which form a part hereof, and in which are shown several embodiments of the present application. It is understood that other embodiments can be utilized and mechanical, structural, electrical, and operational changes can be made without departing from the spirit and scope of the present application. The following detailed description is, therefore, not to be taken in a limiting sense, as the scope of the inventive subject matter is defined by the appended claims.

[0027] While the terms first, second, etc. can be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. ​

[0028] Furthermore, as used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context indicates otherwise. It will be further understood that the terms "comprises", "comprising", "includes" and / or "including" when used herein, specify the presence of stated features, steps, operations, elements, components, items, and / or groups but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, items, and / or groups thereof. As used herein, the terms "or" and "and / or" are to be interpreted as inclusive, i.e., as meaning one or any combination of the items. Thus, "A, B or C" or "A, B and / or C" means "any of the following: A; B; C; A and B; A and C; B and C; A, B and C". Exceptions to this definition apply only when the combination of elements, functions, steps or acts are mutually exclusive, by their very nature.

[0029] Figure 1 is a structural schematic diagram of a supercharger of the present application, Figure 2 is a sectional structural schematic diagram of the supercharger of the present application along a first direction, Figure 3 is a sectional structural schematic diagram of the supercharger of the present application along a second direction, Figure 4 is a structural schematic diagram of the supercharger of the present application with the shell removed, as shown in Figure 1 , Figure 2 , Figure 3 and Figure 4 , the supercharger 10 comprises an air pump 11 and a motor 12, the air pump 11 comprises a shell 111 and four piston-rod assemblies and an eccentric shaft 115 installed in the shell 111, four cylinders 119 are arranged in the shell 111, one end of each piston-rod assembly is movably arranged in each cylinder 119, the other end of each piston-rod assembly is connected to the eccentric shaft 115, the motor 12 is connected to the eccentric shaft 115, and the motor 12 is used to drive the eccentric shaft 115 to rotate to realize compressed air.

[0030] The eccentric shaft 115 of the supercharger 10 of the present application has one piston-rod assembly completing one compression of gas every 90° of rotation, and four piston-rod assemblies complete compression of air every revolution of the eccentric shaft 115, thereby increasing the displacement of the supercharger 10 and also increasing the first-order frequency of the supercharger 10. Since the supercharger 10 of the present application adopts a four-cylinder small-stroke arrangement, the exhaust noise can be effectively reduced without increasing the size.

[0031] Optionally, as shown in Figure 3 and Figure 4 , two of the cylinders 119 are arranged symmetrically up and down, and the other two cylinders 119 are arranged symmetrically left and right; and the four piston-rod assemblies are arranged in a cross around the eccentric shaft 115. The arrangement of the four cylinders and the four piston-rod assemblies of the present application has good longitudinal balance and small vibration.

[0032] Optionally, Figure 5 This is a cross-sectional view of the piston connecting rod assembly and eccentric shaft of the present invention, as shown below. Figure 5 As shown, each piston-connecting rod assembly includes a connecting rod 112, a piston ring 113, and an intake valve 114. The connecting rod 112 includes a first end 1121 and a second end 1122 opposite to each other. The first end 1121 is connected to an eccentric shaft 115, and the second end 1122 is disposed in a cylinder 119. The piston ring 113 and the intake valve 114 are connected to the second end 1122. In this embodiment, a portion of the piston ring 113 is fixed between the intake valve 114 and the second end 1122, and the other portion of the piston ring 113 contacts the cylinder wall of the cylinder 119.

[0033] Optionally, such as Figure 4 and Figure 5 As shown, a bearing 116 is connected to the eccentric shaft 115. A snap-fit ​​groove 101 is provided at the first end 1121, and the outer ring of the bearing 116 is installed in the snap-fit ​​groove 101. A fixing block 1123 protrudes axially along the eccentric shaft 115 from the first end 1121. The fixing blocks 1123 of the four connecting rods 112 are arranged at 90° angles to each other around the eccentric shaft 115, and the four fixing blocks 1123 are connected by snap rings 117. In this embodiment, all four fixing blocks 1123 are tapered to prevent interference between adjacent connecting rods 112.

[0034] Optionally, such as Figure 4 As shown, the first end 1121 is tapered, and the width of the first end 1121 gradually decreases towards the eccentric shaft 115. This structural design can avoid interference between two adjacent connecting rods 112 and ensure that the four piston connecting rod assemblies can smoothly complete the compression action.

[0035] Optionally, Figure 6 yes Figure 5 The schematic diagram of a partial cross-sectional view of the piston connecting rod assembly shown is as follows: Figure 6 As shown, the intake valve 114 includes an intake seat 1141, an intake valve plate 1142, and a limiting pin 1143. The intake seat 1141 is connected to the second end 1122. The intake seat 1141 is provided with a first intake channel 105. The second end 1122 is provided with a second intake channel communicating with the first intake channel 105. The intake valve plate 1142 is provided to cover the first intake channel 105. The intake valve plate 1142 is provided with a through hole in the middle. One end of the limiting pin 1143 passes through the through hole and is connected to the intake seat 1141. The other end of the limiting pin 1143 forms a limiting block to limit the intake valve plate 1142. When the cylinder 119 is inlet, the airflow passes through the second intake channel and the first intake channel 105, pushes open the intake valve plate 1142, and enters the cylinder 119. At this time, the intake valve plate 1142 is pushed against the limiting block by the airflow.

[0036] Optionally, as Figure 2 and Figure 3 shown, the shell 111 is provided with four installation channels 102, and the four cylinders 119 are respectively installed in the four installation channels 102. The air pump 11 further comprises four exhaust valves 118, and the four exhaust valves 118 are respectively installed in the installation channels 102. Each exhaust valve 118 is connected with each cylinder 119.

[0037] Optionally, Figure 7 is a sectional view of the exhaust valve of the present application. As Figure 3 and Figure 7 shown, the exhaust valve 118 comprises an exhaust cover 1181, an exhaust seat 1182, and an exhaust valve plate 1183. The exhaust cover 1181 is oppositely arranged with the exhaust seat 1182, and the exhaust valve plate 1183 is arranged on the exhaust seat 1182. The exhaust cover 1181 is connected in the installation channel 102, and the exhaust seat 1182 is connected with the cylinder 119. The exhaust cover 1181 is provided with a fixed cylinder 1181a on the side close to the exhaust seat 1182. The exhaust seat 1182 is provided with a through hole 104 in communication with the cylinder 119. The exhaust valve plate 1183 comprises a fixed part 1183a and a movable part 1183b connected oppositely. The fixed cylinder 1181a is abutted on the fixed part 1183a, and the movable part 1183b covers the through hole 104. The gas in the cylinder 119 can push the movable part 1183b to make the inner cavity of the fixed cylinder 1181a in communication with the cylinder 119. When the piston connecting rod assembly compresses the air in the cylinder 119, the air pressure in the cylinder 119 gradually increases until the air pressure increases to push the movable part 1183b away from the exhaust seat 1182. At this time, the through hole 104 makes the inner cavity of the fixed cylinder 1181a in communication with the cylinder 119, and the air in the cylinder 119 is discharged into the inner cavity of the fixed cylinder 1181a. The exhaust valve 118 of the present application does not need to be provided with a limiting support for limiting the exhaust cover 1181 and the exhaust valve plate 1183, and the manufacturing cost can be reduced.

[0038] Optionally, as Figure 3 and Figure 7 shown, the side wall of the fixed cylinder 1181a is provided with a perforation 103 in communication with the installation channel 102 and the inner cavity of the fixed cylinder 1181a. The shell 111 is provided with an exhaust channel in communication with the installation channel 102, i.e. the pressurized air from the cylinder 119 sequentially passes through the through hole 104, the inner cavity of the fixed cylinder 1181a, the perforation 103, the installation channel 102, and the exhaust channel and is discharged.

[0039] Optionally, as Figure 3 and Figure 7As shown, the fixed exhaust cover 1181 is further provided with a limiting cylinder 1181b near one side of the exhaust seat 1182, the limiting cylinder 1181b is located in the fixed cylinder 1181a, the end of the limiting cylinder 1181b is spaced apart from the movable part 1183b, and the gas in the cylinder 119 can push the movable part 1183b to abut against the end of the limiting cylinder 1181b. In this embodiment, the limiting cylinder 1181b is located in the middle of the exhaust cover 1181, and is used for limiting the movable part 1183b.

[0040] Optionally, Figure 8 is a structural schematic diagram of the air supply system of the air suspension of the present application, as Figure 8 As shown, the present application also relates to an air supply system of an air suspension, comprising the above-mentioned supercharger 10, a plurality of air spring air bags 12, an air tank 13, a first three-way valve 141, a second three-way valve 142, a first two-way valve 151, a second two-way valve 152, a plurality of air spring electromagnetic valves 16, a first channel 171, a second channel 172, a third channel 173, a fourth channel 174, a fifth channel 175 and a sixth channel 176, wherein:

[0041] The first channel 171 is used for air inlet, and the first channel 171 is connected with the air inlet of the supercharger 10;

[0042] One end of the second channel 172 is connected with the air outlet of the supercharger 10, and the other end of the second channel 172 is connected with the first three-way valve 141;

[0043] One end of the third channel 173 is connected with the first three-way valve 141, the other end of the third channel 173 is connected with the air tank 13, the first two-way valve 151 is connected to the third channel 173, and the first two-way valve 151 is used for connecting or blocking the third channel 173;

[0044] One end of the fourth channel 174 is connected with the first three-way valve 141, the other end of the fourth channel 174 is connected with the air inlet of the supercharger 10, the second two-way valve 152 is connected to the fourth channel 174, and the second two-way valve 152 is used for connecting or blocking the fourth channel 174, the second three-way valve 142 is connected to the fourth channel 174 between the second two-way valve 152 and the first three-way valve 141, and the first three-way valve 141 is used for connecting the second channel 172 and the third channel 173, or connecting the third channel 173 and the fourth channel 174;

[0045] One end of the fifth channel 175 is connected with the second three-way valve 142, and the other end of the fifth channel 175 is connected with the plurality of air spring electromagnetic valves 16, each air spring electromagnetic valve 16 is connected with each air spring air bag 12, and each air spring electromagnetic valve 16 is used for connecting or blocking the air passage between each air spring air bag 12 and the fifth channel 175;

[0046] One end of the sixth channel 176 is connected to the second channel 172, and the other end of the sixth channel 176 is connected to the second three-way valve 142, which is used to connect the fourth channel 174 to the fifth channel 175 or to connect the fifth channel 175 to the sixth channel 176. In this embodiment, the air supply system of the air suspension includes four air spring bellows 12 and four air spring solenoid valves 16.

[0047] The air compressor 10 of the air supply system of the air suspension of the present application can pump high-pressure air into the air tank 13 and each air spring bellow 12, the air tank 13 can store high-pressure air and provide high-pressure air for the air compressor 10 or each air spring bellow 12; when the air tank 13 provides high-pressure air for the air compressor 10, the air compressor 10 can compress the high-pressure air in the air tank 13 again, thereby accelerating the air intake speed and pressure of the air spring bellows 12, so that the air supply system of the air suspension can quickly respond to changes in the height of the vehicle body and adjust the stiffness or damping of the suspension; when the air tank 13 provides high-pressure air for each air spring bellow 12, the air compressor 10 can stop working at this time, reducing the start-stop times of the air compressor 10, which not only increases the service life of the air compressor 10, but also reduces power consumption and noise. In addition, the air supply system of the air suspension of the present application realizes multiple pressure building work modes, multiple air release work modes, and air pressure reading modes through the cooperation of the first three-way valve 141, the second three-way valve 142, the first two-way valve 151, the second two-way valve 152, and the plurality of air spring solenoid valves 16, and can flexibly switch between different work modes according to actual needs, which has good adaptability.

[0048] Optionally, the air supply system of the air suspension further includes a first one-way valve 181 and a second one-way valve 182, the first one-way valve 181 is connected to the first channel 171, air can enter the air compressor 10 through the first one-way valve 181, and the first one-way valve 181 can prevent air from being discharged from the first channel 171; the second one-way valve 182 is connected to the second channel 172, air can be discharged to the first three-way valve 141 through the second one-way valve 182, and the second one-way valve 182 can prevent air from entering the air compressor 10.

[0049] Optionally, the air supply system of the air suspension further includes an air filter 19 and an air dryer 21, the air filter 19 is connected to the first channel 171, and the air dryer 21 is connected to the second channel 172. In this embodiment, the air filter 19 can adsorb impurities in the air; the air dryer 21 can adsorb water vapor flowing through the gas, thereby obtaining dry air.

[0050] Optionally, the air supply system of the air suspension further comprises a safety valve 22 and a seventh channel 177, one end of the seventh channel 177 is connected with the air inlet of the supercharger 10, the other end of the seventh channel 177 is connected with the second channel 172, the safety valve 22 is connected with the seventh channel 177; when the air pressure in the second channel 172 is greater than or equal to a preset value, the safety valve 22 connects the seventh channel 177; when the air pressure in the second channel 172 is less than the preset value, the safety valve 22 blocks the seventh channel 177.

[0051] Optionally, the air supply system of the air suspension further comprises a metal block (not shown in the figure), the supercharger 10, the first three-way valve 141, the second three-way valve 142, the first two-way valve 151, the second two-way valve 152 and the plurality of air spring electromagnetic valves 16 are all mounted on the metal block, and the first channel 171, the second channel 172, the third channel 173, the fourth channel 174, the fifth channel 175 and the sixth channel 176 are all formed in the metal block. The supercharger 10, the electromagnetic valves and the channels of the present application are all integrated on a metal block, without the need to reserve independent mounting space for each device, greatly compressing the layout space.

[0052] Optionally, the metal block is threadedly connected with an air inlet connector, a plurality of air bag connectors and an air tank connector; one end of the air inlet connector is connected with the first channel 171, and the other end of the air inlet connector is used for abutting against an air inlet pipe; one end of each air bag connector is respectively abutted against each air spring electromagnetic valve 16, and the other end of each air bag connector is abutted against each air spring air bag 12; one end of the air tank connector is connected with the third channel 173, and the other end of the air tank connector is connected with the air tank 13.

[0053] Optionally, the air supply system of the air suspension further comprises a third one-way valve 183, an overflow channel 23 and a first air plug 241, the third one-way valve 183 is connected with the second channel 172 between the second one-way valve 182 and the first three-way valve 141, one end of the overflow channel 23 is connected with the air inlet of the third one-way valve 183, the other end of the overflow channel 23 is connected with the air outlet of the third one-way valve 183, and the first air plug 241 is connected with the overflow channel 23; when the air pressure of the air inlet of the third one-way valve 183 is greater than or equal to a preset value, the air flow can be discharged into the air outlet of the third one-way valve 183 through the first air plug 241.

[0054] Optionally, the air supply system of the air suspension further comprises a fourth one-way valve 184, an exhaust channel 25 and a second air plug 242, the exhaust channel 25 is used for exhausting air, one end of the exhaust channel 25 is connected with the second channel 172, the fourth one-way valve 184 and the second air plug 242 are connected with the exhaust channel 25, and the second air plug 242 is a hand-operated air release plug.

[0055] Optionally, the air supply system of the air suspension further comprises an air pressure sensor 26, and the air pressure sensor 26 is connected with the fifth channel 175.

[0056] Optionally, the air supply system of the air suspension comprises at least one of the first pressure building mode, the second pressure building mode, the third pressure building mode, the fourth pressure building mode, and the fifth pressure building mode.

[0057] When the air supply system of the air suspension is in the first pressure building mode, the supercharger 10 is working, the first three-way valve 141 connects the second passage 172 and the third passage 173, the first two-way valve 151 connects the third passage 173, the second three-way valve 142 connects the fifth passage 175 and the sixth passage 176, and the plurality of air spring electromagnetic valves 16 block the air spring bellows 12 and the fifth passage 175. At this time, the supercharger 10 sucks the air pressurized by the air pressurizing pump into the air tank 13, and the air pressure sensor 26 can detect the air pressure of the air tank 13.

[0058] When the air supply system of the air suspension is in the second pressure building mode, the supercharger 10 is working, the first three-way valve 141 connects the third passage 173 and the fourth passage 174, the first two-way valve 151 blocks the third passage 173, the second three-way valve 142 connects the fifth passage 175 and the sixth passage 176, and the plurality of air spring electromagnetic valves 16 connect the air spring bellows 12 and the fifth passage 175. At this time, the supercharger 10 sucks the air pressurized by the air pressurizing pump into the air spring bellows 12, and the air pressure sensor 26 can detect the air pressure of the air spring bellows 12.

[0059] When the air supply system of the air suspension is in the third pressure building mode, the supercharger 10 is working, the first three-way valve 141 connects the third passage 173 and the fourth passage 174, the first two-way valve 151 connects the third passage 173, the second two-way valve 152 connects the fourth passage 174, the second three-way valve 142 connects the fifth passage 175 and the sixth passage 176, and the plurality of air spring electromagnetic valves 16 connect the air spring bellows 12 and the fifth passage 175. At this time, the supercharger 10 sucks the high-pressure air in the air tank 13 and pressurizes it into the air spring bellows 12, and the air pressure sensor 26 can detect the air pressure of the air spring bellows 12.

[0060] When the air supply system of the air suspension is in the fourth pressure building mode, the supercharger 10 is not working, the first three-way valve 141 connects the third passage 173 and the fourth passage 174, the first two-way valve 151 connects the third passage 173, the second two-way valve 152 blocks the fourth passage 174, the second three-way valve 142 connects the fourth passage 174 and the fifth passage 175, and the plurality of air spring electromagnetic valves 16 connect the air spring bellows 12 and the fifth passage 175. At this time, the high-pressure air in the air tank 13 is pressurized into the air spring bellows 12, and the air pressure sensor 26 can detect the air pressure of the air spring bellows 12.

[0061] When the air supply system of the air suspension is in the fifth pressure building mode, the supercharger 10 is working, the first three-way valve 141 connects the second passage 172 and the third passage 173, the first two-way valve 151 connects the third passage 173, the second two-way valve 152 connects the fourth passage 174, the second three-way valve 142 connects the fourth passage 174 and the fifth passage 175, each air spring electromagnetic valve 16 connects each air spring air bag 12 and the fifth passage 175, at this time the supercharger 10 sucks the high pressure air in each air spring air bag 12 to pressurize the pump into the air tank 13, and the air pressure sensor 26 can detect the air pressure of each air spring air bag 12.

[0062] Optionally, the air supply system of the air suspension further comprises a third two-way valve 153 and an eighth passage 178, the eighth passage 178 is used for exhaust, the eighth passage 178 is connected to the second passage 172, the third two-way valve 153 is connected to the eighth passage 178, and the third two-way valve 153 is used for connecting or blocking the eighth passage 178.

[0063] Optionally, the air supply system of the air suspension comprises at least one of a first air release mode and a second air release mode.

[0064] When the air supply system of the air suspension is in the first air release mode, the supercharger 10 is not working, the first three-way valve 141 connects the third passage 173 and the fourth passage 174, the first two-way valve 151 blocks the third passage 173, the second three-way valve 142 connects the fifth passage 175 and the sixth passage 176, each air spring electromagnetic valve 16 connects each air spring air bag 12 and the fifth passage 175, the third two-way valve 153 connects the eighth passage 178, at this time the high pressure air in each air spring air bag 12 is discharged through the eighth passage 178, and the air pressure sensor 26 can detect the air pressure of each air spring air bag 12.

[0065] When the air supply system of the air suspension is in the second air release mode, the supercharger 10 is not working, the first three-way valve 141 connects the second passage 172 and the third passage 173, the first two-way valve 151 connects the third passage 173, the second three-way valve 142 connects the fourth passage 174 and the fifth passage 175, each air spring electromagnetic valve 16 blocks each air spring air bag 12 and the fifth passage 175, the second two-way valve 152 blocks the fourth passage 174, and the third two-way valve 153 connects the eighth passage 178, at this time the high pressure air in the air tank 13 is discharged through the eighth passage 178, and the air pressure sensor 26 can detect the air pressure of the air tank 13.

[0066] Optionally, the air supply system of the air suspension comprises at least one of a first air pressure reading mode and a second air pressure reading mode.

[0067] When the air supply system of the air suspension is in the first air pressure reading mode, the air compressor 10 is not working, the first three-way valve 141 connects the third passage 173 and the fourth passage 174, the first two-way valve 151 blocks the third passage 173, the second two-way valve 152 blocks the fourth passage 174, the second three-way valve 142 connects the fourth passage 174 and the fifth passage 175, and each air spring electromagnetic valve 16 connects each air spring air bag 12 and the fifth passage 175, at this time the air pressure sensor 26 can read the air pressure of each air spring air bag 12.

[0068] When the air supply system of the air suspension is in the second air pressure reading mode, the air compressor 10 is not working, the first three-way valve 141 connects the third passage 173 and the fourth passage 174, the first two-way valve 151 connects the third passage 173, the second two-way valve 152 blocks the fourth passage 174, the second three-way valve 142 connects the fourth passage 174 and the fifth passage 175, and each air spring electromagnetic valve 16 blocks each air spring air bag 12 and the fifth passage 175, at this time the air pressure sensor 26 can read the air pressure of the air tank 13.

[0069] Optionally, when the first three-way valve 141 is powered on, the first three-way valve 141 connects the third passage 173 and the fourth passage 174; when the first three-way valve 141 is powered off, the first three-way valve 141 connects the second passage 172 and the third passage 173.

[0070] Optionally, when the second three-way valve 142 is powered on, the second three-way valve 142 connects the fifth passage 175 and the sixth passage 176; when the second three-way valve 142 is powered off, the second three-way valve 142 connects the fourth passage 174 and the fifth passage 175.

[0071] Optionally, the first two-way valve 151, the second two-way valve 152, the third two-way valve 153, and the plurality of air spring electromagnetic valves 16 are all normally closed valves.

[0072] When the first two-way valve 151 is powered on, the first two-way valve 151 connects the third passage 173; when the first two-way valve 151 is powered off, the first two-way valve 151 blocks the third passage 173.

[0073] When the second two-way valve 152 is powered on, the second two-way valve 152 connects the fourth passage 174; when the second two-way valve 152 is powered off, the second two-way valve 152 blocks the fourth passage 174.

[0074] When the third two-way valve 153 is powered on, the third two-way valve 153 connects the eighth passage 178; when the third two-way valve 153 is powered off, the third two-way valve 153 blocks the eighth passage 178.

[0075] When each air spring solenoid valve 16 is energized, each air spring solenoid valve 16 opens an air passage between each air spring air bag 12 and the fifth passage 175; when each air spring solenoid valve 16 is de-energized, each air spring solenoid valve 16 blocks the air passage between each air spring air bag 12 and the fifth passage 175.

[0076] The above embodiments are only illustrative of the principles and effects of the present application, and are not intended to limit the present application. Any modification or change made by those skilled in the art without departing from the spirit and scope of the present application shall be covered by the claims of the present application.

Claims

1. A booster compressor, characterized in that, The system includes an air pump and a motor. The air pump includes a housing, four piston rod assemblies, and an eccentric shaft mounted within the housing. Four cylinders are housed within the housing. One end of each piston rod assembly is movably disposed within its respective cylinder, and the other end is connected to the eccentric shaft. The motor is connected to the eccentric shaft and drives its rotation to compress air. The housing has four mounting channels, and the four cylinders are respectively mounted in these channels. The air pump also includes four exhaust valves, each mounted in one of the mounting channels and connected to its respective cylinder. Each exhaust valve includes an exhaust cover, an exhaust seat, and an exhaust valve plate. The exhaust cover is positioned opposite the exhaust seat, and the exhaust valve plate is disposed on the exhaust seat. The exhaust cover is connected to the mounting channel, and the exhaust seat is connected to the cylinder. The exhaust cover has a fixed cylinder on its side near the exhaust seat, and the exhaust seat has a through hole communicating with the cylinder. The exhaust valve plate includes… The fixed part and the movable part are connected relative to each other. The fixed cylinder abuts against the fixed part, and the movable part covers the through hole. The gas in the cylinder can push the movable part to make the inner cavity of the fixed cylinder communicate with the cylinder. The side wall of the fixed cylinder is provided with a through hole, which connects the mounting channel and the inner cavity of the fixed cylinder. The housing is provided with an exhaust channel that communicates with the mounting channel. The exhaust cover is also provided with a limiting cylinder on the side near the exhaust seat. The limiting cylinder is located in the fixed cylinder. The end of the limiting cylinder is spaced apart from the movable part. The gas in the cylinder can push the movable part to abut against the end of the limiting cylinder.

2. The booster compressor as described in claim 1, characterized in that, Two of the cylinders are arranged symmetrically vertically, and the other two cylinders are arranged symmetrically horizontally; the four piston connecting rod assemblies are arranged in a cross shape around the eccentric axis.

3. The booster compressor as described in claim 1 or 2, characterized in that, Each of the piston connecting rod assemblies includes a connecting rod, a piston ring, and an intake valve. The connecting rod includes a first end and a second end opposite to each other. The first end is connected to the eccentric shaft, and the second end is disposed in the cylinder. The piston ring and the intake valve are connected to the second end. The first end is tapered, and the width of the first end gradually decreases towards the eccentric shaft.

4. The booster compressor as described in claim 3, characterized in that, A bearing is connected to the eccentric shaft. The first end is provided with a snap-fit ​​groove. The outer ring of the bearing is installed in the snap-fit ​​groove. A fixing block protruding along the axial direction of the eccentric shaft is provided at the first end. The fixing blocks of the four connecting rods are arranged at 90° to each other around the eccentric shaft. The four fixing blocks are connected by snap rings.

5. An air supply system for an air suspension, characterized in that, Includes the booster compressor as described in any one of claims 1 to 4.

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