Air supply system for air suspension

Abstract

An air supply system of an air suspension includes a supercharger, a plurality of air spring air bags, an air tank, a first three-way valve, a second three-way valve, a first two-way valve, a second two-way valve, a plurality of air spring electromagnetic valves, a first channel, a second channel, a third channel, a fourth channel, a fifth channel and a sixth channel, the first channel is connected with the supercharger; the second channel is connected between the supercharger and the first three-way valve; the third channel is connected between the first three-way valve and the air tank, the first two-way valve is connected to the third channel; the fourth channel is connected between the first three-way valve and the supercharger, the second two-way valve is connected to the fourth channel, the second three-way valve is connected to the fourth channel between the second two-way valve and the first three-way valve; one end of the fifth channel is connected with the second three-way valve, the other end of the fifth channel is connected with the plurality of air spring electromagnetic valves, each air spring electromagnetic valve is respectively connected with each air spring air bag; one end of the sixth channel is connected with the second channel, the sixth channel is connected with the second three-way valve.

Description

Technical Field

[0001] This invention relates to the field of air suspension technology, and in particular to an air supply system for air suspension. Background Technology

[0002] Passenger cars and commercial vehicles utilize air spring supply systems to alter vehicle height and adjust suspension stiffness or damping, thereby improving vehicle passability and comfort. The air springs in an air spring supply system require high-pressure air to support the vehicle, and this high-pressure air must be released when lowering the vehicle height. Existing air spring supply systems include a turbocharger, an air tank, and multiple air springs. The turbocharger is connected to the air tank and multiple air springs via air hoses, and it supplies high-pressure air to the air tank and air springs. Existing air spring supply systems have the following disadvantages:

[0003] First, the booster compressor usually supplies high-pressure air to the air tank or multiple air springs and air bags. This process requires the booster compressor to be started or stopped intermittently many times, resulting in high power consumption and noise.

[0004] Secondly, the turbocharger, air tank, and multiple air springs require independent installation space, resulting in a large space requirement for vehicle layout.

[0005] Third, the air spring supply system has few operating modes and poor adaptability. Summary of the Invention

[0006] In view of this, the present invention provides an air supply system for an air suspension that can reduce the number of times the turbocharger starts and stops, increase the service life of the turbocharger, and reduce power consumption and noise.

[0007] An air supply system for an air suspension includes a turbocharger, multiple air spring airbags, an air tank, a first three-way valve, a second three-way valve, a first two-way valve, a second two-way valve, multiple air spring solenoid valves, a first channel, a second channel, a third channel, a fourth channel, a fifth channel, and a sixth channel, wherein:

[0008] The first channel is used for air intake and is connected to the air intake of the turbocharger;

[0009] One end of the second channel is connected to the air outlet of the booster, and the other end of the second channel is connected to the first three-way valve;

[0010] One end of the third channel is connected to the first three-way valve, and the other end of the third channel is connected to the gas storage tank. The first two-way valve is connected to the third channel and is used to connect or disconnect the third channel.

[0011] One end of the fourth channel is connected to the first three-way valve, and the other end of the fourth channel is connected to the air inlet of the booster. The second two-way valve is connected to the fourth channel and is used to open or close the fourth channel. The second three-way valve is connected to the fourth channel between the second two-way valve and the first three-way valve. The first three-way valve is used to open the second channel and the third channel, or to open the third channel and the fourth channel.

[0012] One end of the fifth channel is connected to the second three-way valve, and the other end of the fifth channel is connected to multiple air spring solenoid valves. Each air spring solenoid valve is connected to each air spring airbag. Each air spring solenoid valve is used to open or close the air passage between each air spring airbag and the fifth channel.

[0013] One end of the sixth channel is connected to the second channel, and the other end of the sixth channel is connected to the second three-way valve. The second three-way valve is used to connect the fourth and fifth channels, or the fifth and sixth channels. The air suspension system of this invention can utilize an air tank to provide high-pressure air to the turbocharger or air spring airbags; the air tank supplying air to the turbocharger can accelerate the intake speed and intake pressure, enabling the system to respond quickly; the air tank supplying air to the air spring airbags can reduce the number of turbocharger start-stop cycles, increasing its service life; multiple operating modes are achieved through the cooperation of the first three-way valve, the second three-way valve, the first two-way valve, the second two-way valve, and multiple air spring solenoid valves, resulting in good adaptability.

[0014] In an embodiment of the present invention, the aforementioned booster compressor includes an air pump and a motor. The air pump includes a housing and four piston-connecting rod assemblies and an eccentric shaft installed within the housing. Four cylinders are disposed within the housing. One end of each of the four piston-connecting rod assemblies is disposed within one of the four cylinders, and the other end of each piston-connecting rod assemblies is connected to the eccentric shaft. The motor is connected to the eccentric shaft and drives the eccentric shaft to rotate, thereby compressing air using the booster compressor. The booster compressor of the present invention employs a four-cylinder short-stroke arrangement, which effectively reduces exhaust noise without increasing size.

[0015] In an embodiment of the present invention, the air supply system of the air suspension further includes a first one-way valve and a second one-way valve, wherein the first one-way valve is connected to the first channel and the second one-way valve is connected to the second channel.

[0016] In an embodiment of the present invention, the air supply system of the air suspension further includes an air filter and an air dryer, wherein the air filter is connected to the first channel and the air dryer is connected to the second channel. The air filter of the present invention can adsorb impurities in the air; the air dryer can adsorb water vapor in the flowing gas, thereby obtaining dry air.

[0017] In an embodiment of the present invention, the air supply system of the air suspension further includes a safety valve and a seventh channel. One end of the seventh channel is connected to the air inlet of the supercharger, and the other end of the seventh channel is connected to the second channel. The safety valve is connected to the seventh channel. When the air pressure in the second channel is greater than or equal to a preset value, the safety valve opens the seventh channel; when the air pressure in the second channel is less than the preset value, the safety valve blocks the seventh channel. The safety valve and the seventh channel of the present invention can relieve pressure when the pressure in the second channel is too high.

[0018] In an embodiment of the present invention, the air supply system of the air suspension further includes a metal block. The booster, the first three-way valve, the second three-way valve, the first two-way valve, the second two-way valve, and the plurality of air spring solenoid valves are all mounted on the metal block. The first channel, the second channel, the third channel, the fourth channel, the fifth channel, and the sixth channel are all formed on the metal block. The booster, each solenoid valve, and each channel of the present invention are integrated onto a single metal block, eliminating the need for separate installation space for each component and significantly reducing the required layout space.

[0019] In an embodiment of the present invention, the air supply system of the air suspension further includes a pressure sensor connected to the fifth channel. The pressure sensor of the present invention can detect air pressure under different operating modes.

[0020] In an embodiment of the present invention, the air supply system of the air suspension includes at least one of the following operating modes: a first pressure-building operating mode, a second pressure-building operating mode, a third pressure-building operating mode, a fourth pressure-building operating mode, and a fifth pressure-building operating mode:

[0021] When the air supply system of the air suspension is in the first pressure build-up working mode, the booster is working, the first three-way valve connects the second channel and the third channel, the first two-way valve connects the third channel, the second three-way valve connects the fifth channel and the sixth channel, and the multiple air spring solenoid valves block each air spring airbag from the fifth channel. At this time, the booster draws in air, pressurizes it, and pumps it into the air tank. The air pressure sensor can detect the air pressure in the air tank.

[0022] When the air supply system of the air suspension is in the second pressure build-up working mode, the booster is working, the first three-way valve connects the third channel and the fourth channel, the first two-way valve blocks the third channel, the second three-way valve connects the fifth channel and the sixth channel, and each air spring solenoid valve connects each air spring airbag to the fifth channel. At this time, the booster draws in air, pressurizes it, and pumps it into each air spring airbag. The air pressure sensor can detect the air pressure of each air spring airbag.

[0023] When the air supply system of the air suspension is in the third pressure-building working mode, the booster is working, the first three-way valve connects the third channel and the fourth channel, the first two-way valve connects the third channel, the second two-way valve connects the fourth channel, the second three-way valve connects the fifth channel and the sixth channel, and each air spring solenoid valve connects each air spring airbag to the fifth channel. At this time, the booster draws high-pressure air from the air tank and pumps it into each air spring airbag. The air pressure sensor can detect the air pressure of each air spring airbag.

[0024] When the air supply system of the air suspension is in the fourth pressure-building working mode, the booster is not working, the first three-way valve connects the third channel and the fourth channel, the first two-way valve connects the third channel, the second two-way valve blocks the fourth channel, the second three-way valve connects the fourth channel and the fifth channel, and each air spring solenoid valve connects each air spring airbag to the fifth channel. At this time, the high-pressure air in the air tank is forced into each air spring airbag, and the air pressure sensor can detect the air pressure of each air spring airbag.

[0025] When the air suspension's air supply system is in the fifth pressure-building mode, the booster operates, the first three-way valve connects the second and third channels, the first two-way valve connects the third channel, the second two-way valve connects the fourth channel, the second three-way valve connects the fourth and fifth channels, and each air spring solenoid valve connects each air spring airbag to the fifth channel. At this time, the booster draws high-pressure air from each air spring airbag and pumps it into the air tank. The air pressure sensor can detect the air pressure of each air spring airbag. The air suspension's air supply system of this invention can achieve multiple pressure-building modes, multiple deflation modes, and air pressure reading modes, and can flexibly switch between different operating modes according to actual needs, exhibiting good adaptability.

[0026] In an embodiment of the present invention, the air supply system of the air suspension further includes a third two-way valve and an eighth channel. The eighth channel is used for exhausting air and is connected to the second channel. The third two-way valve is connected to the eighth channel and is used to connect or block the eighth channel.

[0027] In embodiments of the present invention, the air supply system of the air suspension includes at least one of a first deflation mode and a second deflation mode:

[0028] When the air supply system of the air suspension is in the first deflation mode, the supercharger is not working, the first three-way valve connects the third channel and the fourth channel, the first two-way valve blocks the third channel, the second three-way valve connects the fifth channel and the sixth channel, each air spring solenoid valve connects each air spring airbag to the fifth channel, and the third two-way valve connects the eighth channel. At this time, the high-pressure air in each air spring airbag is discharged through the eighth channel, and the air pressure sensor can detect the air pressure of each air spring airbag.

[0029] When the air suspension's air supply system is in the second deflation mode, the supercharger is not working, the first three-way valve connects the second and third channels, the first two-way valve connects the third channel, the second three-way valve connects the fourth and fifth channels, each air spring solenoid valve blocks each air spring airbag from the fifth channel, the second two-way valve blocks the fourth channel, and the third two-way valve connects the eighth channel. At this time, the high-pressure air in the air tank is discharged through the eighth channel, and the air pressure sensor can detect the air pressure in the air tank. The air suspension's air supply system of this invention can also achieve two deflation modes.

[0030] The air supply system of this invention features a supercharger that pumps high-pressure air into the air tank and each air spring airbag. The air tank stores high-pressure air and supplies it to the supercharger or each air spring airbag. When the air tank supplies high-pressure air to the supercharger, the supercharger compresses the air in the tank again, thereby accelerating the intake speed and pressure of the air spring airbags. This allows the air supply system to quickly respond to changes in vehicle height and adjust suspension stiffness or damping. When the air tank supplies high-pressure air to each air spring airbag, the supercharger can stop working, reducing the number of start-stop cycles. This not only increases the supercharger's lifespan but also reduces power consumption and noise. Furthermore, the air supply system of this invention, through the cooperation of a first three-way valve, a second three-way valve, a first two-way valve, a second two-way valve, and multiple air spring solenoid valves, achieves multiple pressure build-up modes, multiple deflation modes, and air pressure reading modes. It can flexibly switch between different working modes according to actual needs, exhibiting good adaptability. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the air supply system of the air suspension of the present invention.

[0032] Figure 2 This is a schematic diagram of the air supply system of the air suspension of the present invention in the first pressure-building working mode.

[0033] Figure 3This is a schematic diagram of the air supply system of the air suspension of the present invention in the second pressure-building working mode.

[0034] Figure 4 This is a schematic diagram of the air supply system of the air suspension of the present invention in the third pressure-building working mode.

[0035] Figure 5 This is a schematic diagram of the air supply system of the air suspension of the present invention in the fourth pressure-building working mode.

[0036] Figure 6 This is a schematic diagram of the air supply system of the air suspension of the present invention in the fifth pressure-building working mode.

[0037] Figure 7 This is a schematic diagram of the air supply system of the air suspension of the present invention in the first deflation working mode.

[0038] Figure 8 This is a schematic diagram of the air supply system of the air suspension of the present invention in the second deflation mode.

[0039] Figure 9 This is a schematic diagram of the air supply system of the air suspension of the present invention in the first air pressure reading mode.

[0040] Figure 10 This is a schematic diagram of the air supply system of the air suspension of the present invention in the second air pressure reading mode.

[0041] Figure 11 This is a schematic diagram of the booster compressor of the present invention.

[0042] Figure 12 This is a cross-sectional view of the booster compressor of the present invention along the first direction.

[0043] Figure 13 This is a cross-sectional view of the booster compressor of the present invention along the second direction.

[0044] Figure 14 This is a schematic diagram of the structure of the booster compressor of the present invention when the housing is removed.

[0045] Figure 15 This is a cross-sectional structural schematic diagram of the piston connecting rod assembly and eccentric shaft of the present invention.

[0046] Figure 16 yes Figure 15 The diagram shows a partial cross-sectional view of the piston connecting rod assembly.

[0047] Figure 17 This is a cross-sectional structural schematic diagram of the exhaust valve of the present invention. Detailed Implementation

[0048] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0049] In the following description, reference is made to the accompanying drawings, which illustrate several embodiments of the invention. It should be understood that other embodiments may also be used, and changes in mechanical composition, structure, electrical system, and operation may be made without departing from the spirit and scope of the invention. The following detailed description should not be considered limiting; the terminology used herein is for describing particular embodiments only and is not intended to limit the invention.

[0050] Although the terms first, second, etc., are used in some instances to describe various elements herein, these elements should not be limited by these terms. These terms are only used to distinguish one element from another.

[0051] 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 should be further understood that the terms “comprising,” “including,” indicate the presence of a feature, step, operation, element, component, item, kind, and / or group, but do not exclude the presence, occurrence, or addition of one or more other features, steps, operations, elements, components, items, kinds, and / or groups. The terms “or” and “and / or” as used herein are interpreted as inclusive, or mean any one or any combination thereof. Thus, “A, B, or C” or “A, B, and / or C” means “any one of: A; B; C; A and B; A and C; B and C; A, B, and C.” Exceptions to this definition arise only when combinations of elements, functions, steps, or operations are inherently mutually exclusive in some way.

[0052] Figure 1 This is a schematic diagram of the air supply system of the air suspension of the present invention, as shown below. Figure 1 As shown, the air supply system of the air suspension includes a turbocharger 10, multiple air spring airbags 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, multiple air spring solenoid 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:

[0053] The first channel 171 is used for air intake, and the first channel 171 is connected to the air intake port of the booster 10;

[0054] One end of the second channel 172 is connected to the air outlet of the booster 10, and the other end of the second channel 172 is connected to the first three-way valve 141.

[0055] One end of the third channel 173 is connected to the first three-way valve 141, and the other end of the third channel 173 is connected to the gas storage tank 13. The first two-way valve 151 is connected to the third channel 173 and is used to connect or block the third channel 173.

[0056] One end of the fourth channel 174 is connected to the first three-way valve 141, and the other end of the fourth channel 174 is connected to the air inlet of the booster 10. The second two-way valve 152 is connected to the fourth channel 174 and is used to open or close 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. The first three-way valve 141 is used to open the second channel 172 and the third channel 173, or to open the third channel 173 and the fourth channel 174.

[0057] One end of the fifth channel 175 is connected to the second three-way valve 142, and the other end of the fifth channel 175 is connected to multiple air spring solenoid valves 16. Each air spring solenoid valve 16 is connected to each air spring airbag 12. Each air spring solenoid valve 16 is used to open or close the air passage between each air spring airbag 12 and the fifth channel 175.

[0058] 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. The second three-way valve 142 is used to connect the fourth channel 174 and the fifth channel 175, or to connect the fifth channel 175 and the sixth channel 176. In this embodiment, the air supply system of the air suspension includes four air spring airbags 12 and four air spring solenoid valves 16.

[0059] The supercharger 10 of the air suspension supply system of the present invention can pump high-pressure air into the air tank 13 and each air spring airbag 12. The air tank 13 can store high-pressure air and provide high-pressure air to the supercharger 10 or each air spring airbag 12. When the air tank 13 provides high-pressure air to the supercharger 10, the supercharger 10 can compress the high-pressure air in the air tank 13 again, thereby accelerating the intake speed and pressure of the air spring airbag 12, so that the air suspension supply system can quickly respond to changes in vehicle height and adjust the stiffness or damping of the suspension. When the air tank 13 provides high-pressure air to each air spring airbag 12, the supercharger 10 can stop working at this time, reducing the number of times the supercharger 10 starts and stops, which can not only increase the service life of the supercharger 10, but also reduce power consumption and noise. Furthermore, the air supply system of the air suspension of the present invention achieves multiple pressure building modes, multiple air release 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 multiple air spring solenoid valves 16. It can flexibly switch between different working modes according to actual needs and has good adaptability.

[0060] Optionally, the air supply system of the supercharger 10 also 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, and air can enter the supercharger 10 through the first one-way valve 181. 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, and air can be discharged to the first three-way valve 141 through the second one-way valve 182. The second one-way valve 182 can prevent air from entering the supercharger 10.

[0061] Optionally, the air supply system of the air suspension also includes an air filter 19 and an air dryer 21, with the air filter 19 connected to the first channel 171 and the air dryer 21 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 in the flowing gas, thereby obtaining dry air.

[0062] Optionally, the air supply system of the air suspension also includes a safety valve 22 and a seventh channel 177. One end of the seventh channel 177 is connected to the air inlet of the supercharger 10, and the other end of the seventh channel 177 is connected to the second channel 172. The safety valve 22 is connected to 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 opens 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. The safety valve 22 and the seventh channel 177 of the present invention can relieve pressure when the pressure in the second channel 172 is too high.

[0063] Optionally, the air supply system of the air suspension also includes a metal block (not shown). The booster 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 multiple air spring solenoid valves 16 are all mounted on the metal block. 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 on the metal block. In this application, the booster 10, each solenoid valve, and each channel are integrated on a single metal block, eliminating the need to reserve independent installation space for each component and greatly reducing the layout space.

[0064] Optionally, the metal block is threaded with an air inlet connector, multiple airbag connectors, and an air tank connector; one end of the air inlet connector is connected to the first channel 171, and the other end of the air inlet connector is used to connect to the air inlet pipe; one end of each airbag connector is connected to each air spring solenoid valve 16, and the other end of each airbag connector is connected to each air spring airbag 12; one end of the air tank connector is connected to the third channel 173, and the other end of the air tank connector is connected to the air storage tank 13.

[0065] Optionally, the air supply system of the air suspension also includes a third one-way valve 183, an overflow channel 23, and a first air plug 241. The third one-way valve 183 is connected to 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 to the air inlet of the third one-way valve 183, and the other end of the overflow channel 23 is connected to the air outlet of the third one-way valve 183. The first air plug 241 is connected to the overflow channel 23. When exhaust is required, the second channel 172 passes through the first air plug 241 and discharges to the air dryer 21.

[0066] Optionally, the air supply system of the air suspension also includes a fourth one-way valve 184, an exhaust passage 25, and a second air plug 242. The exhaust passage 25 is used for exhausting air, and one end of the exhaust passage 25 is connected to the second passage 172. The fourth one-way valve 184 and the second air plug 242 are connected to the exhaust passage 25. The second air plug 242 is a manual bleed screw plug.

[0067] Optionally, the air suspension's air supply system also includes a pressure sensor 26, which is connected to the fifth channel 175. The pressure sensor 26 of this invention can detect air pressure in different operating modes.

[0068] Optionally, the air supply system of the air suspension includes at least one of the following operating modes: a first pressure-building operating mode, a second pressure-building operating mode, a third pressure-building operating mode, a fourth pressure-building operating mode, and a fifth pressure-building operating mode.

[0069] Figure 2 This is a schematic diagram of the air supply system of the air suspension of the present invention in the first pressure-building working mode, as shown below. Figure 2 As shown, when the air suspension's air supply system is in the first pressure-building working mode, the booster 10 is working, the first three-way valve 141 connects the second channel 172 and the third channel 173, the first two-way valve 151 connects the third channel 173, the second three-way valve 142 connects the fifth channel 175 and the sixth channel 176, and multiple air spring solenoid valves 16 block each air spring airbag 12 from the fifth channel 175. At this time, the booster 10 draws in air, pressurizes it, and pumps it into the air tank 13. The air pressure sensor 26 can detect the air pressure in the air tank 13.

[0070] Figure 3 This is a schematic diagram of the air supply system of the air suspension of the present invention in the second pressure-building working mode, as shown below. Figure 3As shown, when the air suspension air supply system is in the second pressure build-up working mode, the booster 10 works, the first three-way valve 141 connects the third channel 173 and the fourth channel 174, the first two-way valve 151 blocks the third channel 173, the second three-way valve 142 connects the fifth channel 175 and the sixth channel 176, and each air spring solenoid valve 16 connects each air spring airbag 12 to the fifth channel 175. At this time, the booster 10 draws in air, pressurizes it, and pumps it into each air spring airbag 12. The air pressure sensor 26 can detect the air pressure of each air spring airbag 12.

[0071] Figure 4 This is a schematic diagram of the air supply system of the air suspension of the present invention in the third pressure-building working mode, as shown below. Figure 4 As shown, when the air suspension air supply system is in the third pressure-building working mode, the booster 10 works, the first three-way valve 141 connects the third channel 173 and the fourth channel 174, the first two-way valve 151 connects the third channel 173, the second two-way valve 152 connects the fourth channel 174, the second three-way valve 142 connects the fifth channel 175 and the sixth channel 176, and each air spring solenoid valve 16 connects each air spring airbag 12 to the fifth channel 175. At this time, the booster 10 draws high-pressure air from the air tank 13 and pressurizes it into each air spring airbag 12. The air pressure sensor 26 can detect the air pressure of each air spring airbag 12.

[0072] Figure 5 This is a schematic diagram of the air supply system of the air suspension of the present invention in the fourth pressure-building working mode, as shown below. Figure 5 As shown, when the air suspension air supply system is in the fourth pressure build-up working mode, the booster 10 does not work, the first three-way valve 141 connects the third channel 173 and the fourth channel 174, the first two-way valve 151 connects the third channel 173, the second two-way valve 152 blocks the fourth channel 174, the second three-way valve 142 connects the fourth channel 174 and the fifth channel 175, and each air spring solenoid valve 16 connects each air spring airbag 12 and the fifth channel 175. At this time, the high-pressure air in the air tank 13 is forced into each air spring airbag 12, and the air pressure sensor 26 can detect the air pressure of each air spring airbag 12.

[0073] Figure 6 This is a schematic diagram of the air supply system of the air suspension of the present invention in the fifth pressure-building working mode, as shown below. Figure 6As shown, when the air suspension's air supply system is in the fifth pressure-building working mode, the booster 10 operates, the first three-way valve 141 connects the second channel 172 and the third channel 173, the first two-way valve 151 connects the third channel 173, the second two-way valve 152 connects the fourth channel 174, the second three-way valve 142 connects the fourth channel 174 and the fifth channel 175, and each air spring solenoid valve 16 connects each air spring airbag 12 to the fifth channel 175. At this time, the booster 10 draws high-pressure air from each air spring airbag 12 and pressurizes it into the air storage tank 13. The air pressure sensor 26 can detect the air pressure of each air spring airbag 12.

[0074] Optionally, the air supply system of the air suspension also includes a third two-way valve 153 and an eighth channel 178. The eighth channel 178 is used for exhaust and is connected to the second channel 172. The third two-way valve 153 is connected to the eighth channel 178 and is used to connect or block the eighth channel 178.

[0075] Optionally, the air supply system of the air suspension includes at least one of a first deflation operating mode and a second deflation operating mode.

[0076] Figure 7 This is a schematic diagram of the air supply system of the air suspension of the present invention in the first deflation mode, as shown. Figure 7 As shown, when the air suspension supply system is in the first deflation mode, the supercharger 10 is not working, the first three-way valve 141 connects the third channel 173 and the fourth channel 174, the first two-way valve 151 blocks the third channel 173, the second three-way valve 142 connects the fifth channel 175 and the sixth channel 176, each air spring solenoid valve 16 connects each air spring airbag 12 to the fifth channel 175, and the third two-way valve 153 connects the eighth channel 178. At this time, the high-pressure air in each air spring airbag 12 is discharged through the eighth channel 178, and the air pressure sensor 26 can detect the air pressure of each air spring airbag 12.

[0077] Figure 8 This is a schematic diagram of the air supply system of the air suspension of the present invention in the second deflation mode, as shown. Figure 8 As shown, when the air suspension's air supply system is in the second deflation mode, the turbocharger 10 is not working, the first three-way valve 141 connects the second channel 172 and the third channel 173, the first two-way valve 151 connects the third channel 173, the second three-way valve 142 connects the fourth channel 174 and the fifth channel 175, each air spring solenoid valve 16 blocks each air spring airbag 12 from the fifth channel 175, the second two-way valve 152 blocks the fourth channel 174, and the third two-way valve 153 connects the eighth channel 178. At this time, the high-pressure air in the air tank 13 is discharged through the eighth channel 178, and the air pressure sensor 26 can detect the air pressure in the air tank 13.

[0078] Optionally, the air suspension's air supply system includes at least one of a first air pressure reading mode and a second air pressure reading mode.

[0079] Optionally, Figure 9 This is a schematic diagram of the air supply system of the air suspension of the present invention in the first air pressure reading mode, as shown. Figure 9 As shown, when the air suspension's air supply system is in the first air pressure reading mode, the supercharger 10 is not working, the first three-way valve 141 connects the third channel 173 and the fourth channel 174, the first two-way valve 151 blocks the third channel 173, the second two-way valve 152 blocks the fourth channel 174, the second three-way valve 142 connects the fourth channel 174 and the fifth channel 175, and each air spring solenoid valve 16 connects each air spring airbag 12 to the fifth channel 175. At this time, the air pressure sensor 26 can read the air pressure of each air spring airbag 12.

[0080] Optionally, Figure 10 This is a schematic diagram of the air supply system of the air suspension of the present invention in the second air pressure reading mode, as shown. Figure 10 As shown, when the air suspension's air supply system is in the second air pressure reading mode, the booster 10 is not working, the first three-way valve 141 connects the third channel 173 and the fourth channel 174, the first two-way valve 151 connects the third channel 173, the second two-way valve 152 blocks the fourth channel 174, the second three-way valve 142 connects the fourth channel 174 and the fifth channel 175, and each air spring solenoid valve 16 blocks each air spring airbag 12 from the fifth channel 175. At this time, the air pressure sensor 26 can read the air pressure of the air tank 13.

[0081] Optionally, when the first three-way valve 141 is energized, the first three-way valve 141 connects the third channel 173 and the fourth channel 174; when the first three-way valve 141 is de-energized, the first three-way valve 141 connects the second channel 172 and the third channel 173.

[0082] Optionally, when the second three-way valve 142 is energized, the second three-way valve 142 connects the fifth channel 175 and the sixth channel 176; when the second three-way valve 142 is de-energized, the second three-way valve 142 connects the fourth channel 174 and the fifth channel 175.

[0083] Optionally, the first two-way valve 151, the second two-way valve 152, the third two-way valve 153, and the multiple air spring solenoid valves 16 are all normally closed valves.

[0084] When the first two-way valve 151 is energized, it connects the third channel 173; when the first two-way valve 151 is de-energized, it blocks the third channel 173.

[0085] When the second two-way valve 152 is energized, it connects the fourth channel 174; when the second two-way valve 152 is de-energized, it blocks the fourth channel 174.

[0086] When the third two-way valve 153 is energized, it connects the eighth channel 178; when the third two-way valve 153 is de-energized, it blocks the eighth channel 178.

[0087] When each air spring solenoid valve 16 is energized, each air spring solenoid valve 16 connects the air passage between each air spring airbag 12 and the fifth channel 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 airbag 12 and the fifth channel 175.

[0088] Optionally, Figure 11 This is a schematic diagram of the booster compressor of the present invention. Figure 12 This is a cross-sectional view of the booster compressor of the present invention along the first direction. Figure 13 This is a cross-sectional view of the booster compressor of the present invention along the second direction. Figure 14 This is a schematic diagram of the structure of the booster compressor of the present invention when the housing is removed, as shown below. Figure 11 , Figure 12 , Figure 13 and Figure 14 As shown, the booster compressor 10 includes an air pump 11 and a motor 12. The air pump 11 includes a housing 111 and four piston rod assemblies and an eccentric shaft 115 installed in the housing 111. The housing 111 is provided with four cylinders 119. One end of each piston rod assembly is movably disposed in each cylinder 119, and 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 is used to drive the eccentric shaft 115 to rotate in order to compress air.

[0089] In the turbocharger 10 of this invention, one piston-connecting rod assembly completes one gas compression cycle for every 90° rotation of the eccentric shaft 115, and four piston-connecting rod assemblies complete one air compression cycle for every full rotation of the eccentric shaft 115, thereby increasing the exhaust volume of the turbocharger 10 and also increasing the first-order frequency of the turbocharger 10. Because the turbocharger 10 of this application adopts a four-cylinder short-stroke arrangement, it can effectively reduce exhaust noise without increasing size.

[0090] Optionally, such as Figure 13 and Figure 14 As shown, two cylinders 119 are arranged symmetrically vertically, and the other two cylinders 119 are arranged symmetrically horizontally; four piston connecting rod assemblies are arranged in a cross shape around the eccentric shaft 115.

[0091] Optionally, Figure 15 This is a cross-sectional view of the piston connecting rod assembly and eccentric shaft of the present invention, as shown below. Figure 15 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.

[0092] Optionally, such as Figure 14 and Figure 15 As shown, a bearing 116 is connected to the eccentric shaft 115. The first end 1121 is provided with a snap-fit ​​groove 101. The outer ring of the bearing 116 is installed in the snap-fit ​​groove 101. The first end 1121 is provided with a fixing block 1123 that protrudes along the axial direction of the eccentric shaft 115. The fixing blocks 1123 of the four connecting rods 112 are arranged around the eccentric shaft 115 at 90° to each other. The four fixing blocks 1123 are connected by snap rings 117.

[0093] Optionally, such as Figure 14 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.

[0094] Optionally, Figure 16 yes Figure 15 The schematic diagram of a partial cross-sectional view of the piston connecting rod assembly shown is as follows: Figure 16 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.

[0095] Optionally, such as Figure 12 and Figure 13As shown, the housing 111 is provided with four mounting channels 102, and four cylinders 119 are respectively installed in the four mounting channels 102. The air pump 11 also includes four exhaust valves 118, which are respectively installed in the mounting channels 102. Each exhaust valve 118 is connected to each cylinder 119.

[0096] Optionally, Figure 17 This is a cross-sectional view of the exhaust valve of the present invention, as shown in the figure. Figure 13 and Figure 17 As shown, the exhaust valve 118 includes an exhaust cover 1181, an exhaust seat 1182, and an exhaust valve plate 1183. The exhaust cover 1181 and the exhaust seat 1182 are disposed opposite to each other. The exhaust valve plate 1183 is disposed on the exhaust seat 1182. The exhaust cover 1181 is connected to the mounting channel 102, and the exhaust seat 1182 is connected to the cylinder 119. A fixed cylinder 1181a is provided on the side of the exhaust cover 1181 near the exhaust seat 1182. The exhaust seat 1182 is provided with a through hole 104 communicating with the cylinder 119. The exhaust valve plate 1183 includes a fixed part 1183a and a movable part 1183 that are connected opposite to each other. b. The fixed cylinder 1181a abuts against 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 connected to 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 the point that it can push the movable part 1183b away from the exhaust seat 1182. At this time, the through hole 104 connects the inner cavity of the fixed cylinder 1181a and 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 this application does not require a limiting bracket to limit the exhaust cover 1181 and the exhaust valve plate 1183, which can reduce manufacturing costs.

[0097] Optionally, such as Figure 13 and Figure 17 As shown, the side wall of the fixed cylinder 1181a is provided with a through hole 103, which connects the mounting channel 102 and the inner cavity of the fixed cylinder 1181a. The housing 111 is provided with an exhaust channel that connects to the mounting channel 102. That is, the pressurized air is discharged from the cylinder 119 through the through hole 104, the inner cavity of the fixed cylinder 1181a, the through hole 103, the mounting channel 102 and the exhaust channel in sequence.

[0098] Optionally, such as Figure 13 and Figure 17As shown, a limiting cylinder 1181b is also provided on the side of the fixed exhaust cover 1181 near the exhaust seat 1182. The limiting cylinder 1181b is located in the fixed cylinder 1181a, and its end is spaced apart from the movable part 1183b. The gas in the cylinder 119 can push the movable part 1183b 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 to limit the movable part 1183b.

[0099] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. An air supply system for an air suspension, characterized in that, Includes a booster compressor, multiple air spring airbags, an air tank, a first three-way valve, a second three-way valve, a first two-way valve, a second two-way valve, multiple air spring solenoid valves, and first, second, third, fourth, fifth, and sixth channels, wherein: The first channel is used for air intake, and the first channel is connected to the air intake of the booster. One end of the second channel is connected to the air outlet of the booster, and the other end of the second channel is connected to the first three-way valve; One end of the third channel is connected to the first three-way valve, and the other end of the third channel is connected to the gas storage tank. The first two-way valve is connected to the third channel and is used to open or close the third channel. One end of the fourth channel is connected to the first three-way valve, and the other end of the fourth channel is connected to the air inlet of the booster. The second two-way valve is connected to the fourth channel and is used to open or close the fourth channel. The second three-way valve is connected to the fourth channel between the second two-way valve and the first three-way valve. The first three-way valve is used to open the second channel and the third channel, or to open the third channel and the fourth channel. One end of the fifth channel is connected to the second three-way valve, and the other end of the fifth channel is connected to a plurality of air spring solenoid valves. Each air spring solenoid valve is connected to each air spring airbag. Each air spring solenoid valve is used to open or close the air passage between each air spring airbag and the fifth channel. One end of the sixth channel is connected to the second channel, and the other end of the sixth channel is connected to the second three-way valve. The second three-way valve is used to connect the fourth channel and the fifth channel, or to connect the fifth channel and the sixth channel.

2. The air supply system for the air suspension as described in claim 1, characterized in that, The booster includes an air pump and a motor. The air pump includes a housing and four piston rod assemblies and an eccentric shaft installed inside the housing. The housing contains four cylinders. One end of each of the four piston rod assemblies is disposed in one of the four cylinders, and the other end of each piston rod assembly is connected to the eccentric shaft. The motor is connected to the eccentric shaft and is used to drive the eccentric shaft to rotate so as to compress air by the booster.

3. The air supply system for the air suspension as described in claim 1, characterized in that, The air supply system of the air suspension also includes an air filter and an air dryer, the air filter being connected to the first channel and the air dryer being connected to the second channel.

4. The air supply system for the air suspension as described in claim 1, characterized in that, The air supply system of the air suspension also includes a safety valve and a seventh channel. One end of the seventh channel is connected to the air inlet of the supercharger, and the other end of the seventh channel is connected to the second channel. The safety valve is connected to the seventh channel. When the air pressure in the second channel is greater than or equal to a preset value, the safety valve connects the seventh channel; When the air pressure in the second channel is less than a preset value, the safety valve blocks the seventh channel.

5. The air supply system for the air suspension as described in claim 1, characterized in that, The air supply system of the air suspension also includes a metal block. The supercharger, the first three-way valve, the second three-way valve, the first two-way valve, the second two-way valve, and a plurality of air spring solenoid valves are all mounted on the metal block. The first channel, the second channel, the third channel, the fourth channel, the fifth channel, and the sixth channel are all formed on the metal block.

6. The air supply system for the air suspension as described in any one of claims 1 to 5, characterized in that, The air suspension's air supply system also includes a pressure sensor connected to the fifth channel.

7. The air supply system for the air suspension as described in claim 6, characterized in that, The air suspension's air supply system includes at least one of the following operating modes: a first pressure-building operating mode, a second pressure-building operating mode, a third pressure-building operating mode, a fourth pressure-building operating mode, and a fifth pressure-building operating mode: When the air supply system of the air suspension is in the first pressure build-up working mode, the booster is working, the first three-way valve connects the second channel and the third channel, the first two-way valve connects the third channel, the second three-way valve connects the fifth channel and the sixth channel, and the multiple air spring solenoid valves block each air spring airbag from the fifth channel. At this time, the booster draws in air, pressurizes it, and pumps it into the air tank. The air pressure sensor can detect the air pressure in the air tank. When the air supply system of the air suspension is in the second pressure build-up working mode, the booster is working, the first three-way valve connects the third channel and the fourth channel, the first two-way valve blocks the third channel, the second three-way valve connects the fifth channel and the sixth channel, and each air spring solenoid valve connects each air spring airbag to the fifth channel. At this time, the booster draws in air, pressurizes it, and pumps it into each air spring airbag. The air pressure sensor can detect the air pressure of each air spring airbag. When the air supply system of the air suspension is in the third pressure-building working mode, the booster is working, the first three-way valve connects the third channel and the fourth channel, the first two-way valve connects the third channel, the second two-way valve connects the fourth channel, the second three-way valve connects the fifth channel and the sixth channel, and each air spring solenoid valve connects each air spring airbag to the fifth channel. At this time, the booster draws high-pressure air from the air tank and pumps it into each air spring airbag. The air pressure sensor can detect the air pressure of each air spring airbag. When the air supply system of the air suspension is in the fourth pressure-building working mode, the booster is not working, the first three-way valve connects the third channel and the fourth channel, the first two-way valve connects the third channel, the second two-way valve blocks the fourth channel, the second three-way valve connects the fourth channel and the fifth channel, and each air spring solenoid valve connects each air spring airbag to the fifth channel. At this time, the high-pressure air in the air tank is forced into each air spring airbag, and the air pressure sensor can detect the air pressure of each air spring airbag. When the air supply system of the air suspension is in the fifth pressure-building working mode, the booster is working, the first three-way valve connects the second channel and the third channel, the first two-way valve connects the third channel, the second two-way valve connects the fourth channel, the second three-way valve connects the fourth channel and the fifth channel, and each air spring solenoid valve connects each air spring airbag to the fifth channel. At this time, the booster draws high-pressure air from each air spring airbag and pumps it into the air tank. The air pressure sensor can detect the air pressure of each air spring airbag.

8. The air supply system for the air suspension as described in claim 6, characterized in that, The air suspension's air supply system further includes a third two-way valve and an eighth channel. The eighth channel is used for venting air and is connected to the second channel. The third two-way valve is connected to the eighth channel and is used to connect or disconnect the eighth channel. The air suspension's air supply system includes at least one of a first venting mode and a second venting mode. When the air supply system of the air suspension is in the first deflation mode, the supercharger is not working, the first three-way valve connects the third channel and the fourth channel, the first two-way valve blocks the third channel, the second three-way valve connects the fifth channel and the sixth channel, each air spring solenoid valve connects each air spring airbag to the fifth channel, and the third two-way valve connects the eighth channel. At this time, the high-pressure air in each air spring airbag is discharged through the eighth channel, and the air pressure sensor can detect the air pressure of each air spring airbag. When the air supply system of the air suspension is in the second deflation mode, the supercharger is not working, the first three-way valve connects the second channel and the third channel, the first two-way valve connects the third channel, the second three-way valve connects the fourth channel and the fifth channel, each air spring solenoid valve blocks each air spring airbag from the fifth channel, the second two-way valve blocks the fourth channel, and the third two-way valve connects the eighth channel. At this time, the high-pressure air in the air tank is discharged through the eighth channel, and the air pressure sensor can detect the air pressure in the air tank.

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