Air suspension air supply system

Abstract

The utility model relates to new energy automobile chassis technical field discloses an air suspension gas supply system, including integrated electric control piston air pump as drive control part, it includes direct current brushless motor, direct current brushless electric control unit is arranged at one end of direct current brushless motor, pump block unit, integrated piston pump and air dryer cavity, are arranged at the other end of direct current brushless motor, and the dryer is close to heat source, directly absorbs the waste heat generated by heat source, including dry gas gas path and non dry gas gas path, gas path distribution solenoid valve block is connected with integrated electric control piston air pump, and it is provided with a plurality of gas paths connected with external components on it. The utility model closely arranges the double dryer cavity at the both sides of piston pump, makes dry agent can directly, efficiently absorb the waste heat generated when piston pump and motor work. Before regenerative cycle, dry agent has been preheated, significantly improved the moisture desorption efficiency under low temperature environment, ensured the long -term effectiveness and system reliability of dry agent.

Description

Technical Field

[0001] This utility model relates to the field of new energy vehicle chassis technology, specifically, an air suspension air supply system. Background Technology

[0002] With the rapid development of new energy vehicles and the increasing demands of consumers for driving comfort, air suspension systems are gradually becoming standard equipment in mid-to-high-end passenger vehicles. At the same time, air suspension systems are finding more applications, such as tire inflation assistance and pneumatic seat massage, which places higher demands on the reliability, lifespan, and versatility of the suspension air supply system.

[0003] Traditional air suspension air supply systems generally use DC brushed motors to drive piston air pumps. While simple to control, this method suffers from drawbacks such as short lifespan and high noise levels. Therefore, replacing brushed DC motors with brushless DC motors is becoming a technological trend for air pump motors. However, controlling brushless DC motors is more complex, requiring a dedicated electronic control unit (ECU). In air suspension air supply systems using brushless DC motor air pumps, the ECU not only drives and controls the air pump motor but also controls all the solenoid valves in the air circuit. Due to space constraints in the vehicle installation, this presents a greater challenge to the design and layout of the ECU.

[0004] In existing air suspension air supply systems, the regeneration of the dryer requires heat to evaporate moisture. However, the dryer is often far from heat sources such as air pumps and motors. Especially in low-temperature environments, the regeneration efficiency is extremely low, leading to desiccant saturation and failure. This, in turn, causes a series of malfunctions such as system pipeline icing and solenoid valve jamming, resulting in low thermal management efficiency. Utility Model Content

[0005] The purpose of this invention is to provide an air suspension air supply system.

[0006] This utility model provides an air suspension air supply system, comprising,

[0007] An integrated electronically controlled piston air pump serves as the drive and control component; it includes,

[0008] DC brushless motor;

[0009] The brushless DC control unit is located at one end of the brushless DC motor.

[0010] The pump block unit integrates a piston pump and an air dryer chamber, and is located at the other end of the DC brushless motor. The dryer is close to the heat source and directly absorbs the waste heat generated by the heat source.

[0011] The air dryer chamber includes a first dryer chamber and a second dryer chamber, respectively disposed on both sides of the piston-type air pump of the pump block unit. The pump block unit has a first input nozzle, a first output nozzle, and a second output nozzle. The first dryer chamber and the second dryer chamber are connected to the second output nozzle at the output end of the piston pump chamber through an air passage in the pump block unit. The second output nozzle is connected to the second input nozzle of the air passage distribution solenoid valve block, delivering drying gas to the air passage distribution solenoid valve block. The first dryer chamber and the second dryer chamber contain desiccant. The first output nozzle is directly connected to the outlet end of the piston-type air pump through an internal air passage, forming a non-drying gas output path. The second output nozzle is connected to the outlet end of the piston-type air pump through an internal air passage via the first dryer chamber and the second dryer chamber, forming a drying gas output path. The air passage distribution solenoid valve block is connected to an integrated electronically controlled piston air pump and has multiple air passages connected to external components.

[0012] According to this utility model, the brushless DC electronic control unit further includes a control unit housing, an electronic control board connected thereto, and a first connector disposed on the outer periphery of the control unit housing; the first connector is connected to the air distribution solenoid valve block through a first electronic control wiring harness; the first connector is also connected to the power supply and the vehicle electronic control unit through a second electronic control wiring harness.

[0013] According to this utility model, the gas distribution solenoid valve block further includes multiple solenoid valves, a second connector, a second input gas nozzle, a third input gas nozzle, and multiple gas output gas nozzles; the first connector and the second connector are connected through a first electrical control wiring harness.

[0014] According to this utility model, the piston-type air pump has a dual-piston structure, including a first piston and a second piston driven by a cam disc.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This invention arranges the dual dryer chambers closely on both sides of the piston pump, allowing the desiccant to directly and efficiently absorb the waste heat generated by the piston pump and motor during operation. Before regeneration, the desiccant is preheated, significantly improving moisture desorption efficiency at low temperatures and ensuring the long-term effectiveness of the desiccant and the reliability of the system.

[0017] The electronic control unit of this invention not only drives the brushless motor, but also directly controls all solenoid valves, realizing intelligent switching between multiple modes such as air supply, regeneration, and tire inflation, providing more derivative functions for the whole vehicle.

[0018] This invention reduces the number of parts such as the housing and connectors, simplifies the assembly process, and effectively reduces system manufacturing and logistics costs. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the component connections of an air suspension air supply system according to the present invention;

[0020] Figure 2 This is a schematic diagram of the component arrangement in the pump chamber of a piston pump according to one embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of the connection with an external component according to another embodiment of the present invention. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] like Figure 1 As shown in the embodiment of this application, an air suspension air supply system is proposed, including an integrated electronically controlled piston air pump 1 as a drive control component, an air distribution solenoid valve block 2 electrically connected to it, a first electronically controlled wiring harness 3, a second electronically controlled wiring harness 4, and air connection pipelines L01 to L09.

[0024] Specifically, the integrated electronically controlled piston air pump 1 includes: a DC brushless motor 101, a DC brushless electronic control unit 102 arranged at one end of the DC brushless motor 101, and a pump block unit 103 integrating a piston pump and a dryer arranged at the other end of the DC brushless motor 101.

[0025] The DC brushless electronic control unit 102 includes: a control unit housing 1022, an electronic control board 1021 disposed therein, and a first connector 1023 disposed on the outer periphery of the control unit housing 1022; one interface of the first connector 1023 is connected to the connector 201 described in detail below through a first electronic control wiring harness 3, thereby realizing the connection between the integrated electronically controlled piston air pump 1 and the air distribution solenoid valve block 2; the first connector 1023 is also connected to a second electronic control wiring harness 4, which is connected to the power supply and the vehicle electronic control unit, through another interface.

[0026] The integrated piston pump and dryer pump block unit 103 includes: a piston air pump 1031, a first air dryer chamber 1032, a second air dryer chamber 1033, a first inlet nozzle 1034, a first outlet nozzle 1035, and a second outlet nozzle 1036. The first air dryer chamber 1032 and the second air dryer chamber 1033 are located on opposite sides of the piston air pump 1031 and are connected to the second outlet nozzle 1036 at the output end of the piston pump chamber via an air passage in the pump block unit 103. Desiccant is stored in both the first air dryer chamber 1032 and the second air dryer chamber 1033. The first outlet nozzle 1035 is directly connected to the outlet end of the piston air pump 1031 via an internal air passage, forming a non-drying gas output path. The second outlet nozzle 1036 is connected to the outlet end of the piston air pump 1031 via an internal air passage through the first dryer chamber 1032 and the second dryer chamber 1033, forming a dried gas output path.

[0027] The gas distribution solenoid valve block 2 includes: solenoid valves 202-207, a second connector 201, a second input nozzle 216, a third input nozzle 209, and gas output nozzles 210-215. The working principle of this utility model is as follows: The integrated electronically controlled piston air pump 1 of this application controls the operation of the DC brushless motor 101 through the DC brushless electronic control unit 102, driving the piston air pump 1031 in the pump block unit 103 to pump the gas in the inlet pipe L01 into the first air dryer chamber 1032 and the second air dryer chamber 1033. Simultaneously, through the first output nozzle 1035, the outlet pipe L02 is connected to the gas distribution solenoid valve block 2. The output air paths of the first air dryer chamber 1032 and the second air dryer chamber 1033 both pass through the second output nozzle 1036, and the outlet pipe L03 is connected to the second input nozzle 216 of the gas distribution solenoid valve block 2.

[0028] In the gas distribution solenoid valve block 2, the dried gas is connected to the second input nozzle 216 and then connected to the solenoid valve 202 through the gas passage inside the valve block. The five output gas passages of the solenoid valve 202 are connected to their respective gas output nozzles 211-215 through the solenoid valves 204-208 and the gas passage inside the valve block. In the gas distribution solenoid valve block 2, the non-dried gas output from the air pump is connected to the third input nozzle 209 and then connected to the solenoid valve 203 through the gas passage inside the valve block. The output of the solenoid valve 203 is connected to the gas output nozzle 210 through the gas passage inside the valve block.

[0029] In addition to providing drive control for the DC brushless motor 101, the electronic control board 1021 in the DC brushless electronic control unit 102 also integrates drive control for the solenoid valves 202 to 207 in the air path distribution solenoid valve block 2. The electronic control board 1021 is connected to the control terminals of the solenoid valves 202 to 207 in the air path distribution solenoid valve block 2 through the first connector 1023 and the first electronic control wiring harness 3, which are electrically connected to it, respectively. It can independently control the opening or closing of each solenoid valve in the solenoid valves 202 to 207.

[0030] In the system's air intake and supply mode, the integrated electronically controlled piston air pump 1 draws in air through the intake pipe L01. The pressurized air is then directly output through the air pipe L02 to the third input nozzle 209 of the air distribution solenoid valve block 2, controlled by the solenoid valve 203, and output to the downstream air circuit load through the air pipe L04. The pressurized air output by the integrated electronically controlled piston air pump 1 passes through the first air dryer chamber 1032 and the second air dryer chamber 1033. The dried air is then output through the air pipe L03 to the second input nozzle 216 of the air distribution solenoid valve block 2, and then distributed to the solenoid valves 204-208 through the solenoid valve 202. The system controls the regeneration of the dryer using corresponding solenoid valves 204-208, and then outputs the compressed air to the downstream air circuit load through air pipes L05-L09. When the system regenerates the dryer, it first operates in system air supply mode, pumping air to the external air tank through air pipe L05. Once the amount of dried compressed air stored reaches a preset value, the system controls solenoid valves 204, 202, and 203 to open. Compressed air is then back-blown into the first air dryer chamber 1032 and the second air dryer chamber 1033 through air pipes L05, solenoid valves 204 and 202, and air pipe L03, discharging the moisture in the desiccant into the atmosphere through air pipes L03, solenoid valve 203, and air pipe L04. Because the desiccant has already been preheated by heat conduction through the motor and piston pump operating in system air supply mode before regeneration control, the regeneration efficiency of the desiccant in this system can achieve a relatively ideal effect.

[0031] In the embodiments of this application, please refer to Figure 2 The integrated electronically controlled piston air pump 1 comprises an integrated piston pump and dryer pump block unit 103, including: a piston air pump 1031, and air dryer chambers 1032 and 1033. The piston air pump 1031 integrates a double-piston pump rod and double pistons within its pump chamber. The piston head 10312 is connected to a cam plate 10311 via a pump rod 10313, and the piston head 10315 is connected to the cam plate 10311 via a pump rod 10314. The piston air pump 1031 communicates with the first air dryer chamber 1032 and the second air dryer chamber 1033 through air passages in the pump block unit 103.

[0032] In this application embodiment, an application example of an air suspension air supply system for assisting tire inflation is provided, such as... Figure 3 As shown, air is supplied to the system through the intake filter. The system outputs high-pressure gas through air pipe L04 for use by other equipment in the vehicle. The system outputs dry gas through air pipe L05 and stores it in the air tank. The system outputs air to the air springs of the four wheels of the vehicle through L06 to L09 respectively.

[0033] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An air suspension air supply system, characterized in that, include, An integrated electronically controlled piston air pump serves as the drive and control component; It includes, DC brushless motor; The brushless DC control unit is located at one end of the brushless DC motor. The pump block unit integrates a piston pump and an air dryer chamber, and is located at the other end of the DC brushless motor. The dryer is close to the heat source and directly absorbs the waste heat generated by the heat source. The air dryer chamber includes a first dryer chamber and a second dryer chamber, respectively disposed on both sides of the piston-type air pump of the pump block unit. The pump block unit has a first input nozzle, a first output nozzle, and a second output nozzle. The first dryer chamber and the second dryer chamber are connected to the second output nozzle at the output end of the piston pump chamber through an air passage in the pump block unit. The second output nozzle is connected to the second input nozzle of the air passage distribution solenoid valve block, delivering drying gas to the air passage distribution solenoid valve block. The first dryer chamber and the second dryer chamber contain desiccant. The first output nozzle is directly connected to the outlet end of the piston-type air pump through an internal air passage, forming a non-drying gas output path. The second output nozzle is connected to the outlet end of the piston-type air pump through an internal air passage via the first dryer chamber and the second dryer chamber, forming a drying gas output path. The air passage distribution solenoid valve block is connected to an integrated electronically controlled piston air pump and has multiple air passages connected to external components.

2. The air suspension air supply system as described in claim 1, characterized in that, The brushless DC electronic control unit includes a control unit housing, an electronic control board connected thereto, and a first connector disposed on the outer periphery of the control unit housing; the first connector is connected to the air distribution solenoid valve block through a first electronic control wiring harness; the first connector also includes a second electronic control wiring harness connected to the power supply and the vehicle electronic control unit.

3. The air suspension air supply system as described in claim 1, characterized in that, The gas distribution solenoid valve block includes multiple solenoid valves, a second connector, a second input nozzle, a third input nozzle, and multiple gas output nozzles; the first connector and the second connector are connected via a first electrical control harness.

4. The air suspension air supply system as described in claim 1, characterized in that, The piston-type air pump has a dual-piston structure, including a first piston and a second piston driven by a cam disc.

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