Device for increasing oxygen content of intake air of vehicle

Abstract

The invention discloses a device for increasing the oxygen content of intake air of a vehicle, and relates to the technical field of air intake systems of automobile engines. The device comprises an oxygen generation module, a compression module, a connecting assembly, an air inlet branch pipe, a control module, a detection assembly and the like. The oxygen generation module generates high-concentration oxygen, and the high-concentration oxygen is compressed by the compression module and then conveyed to an air inlet branch pipe between an air inlet filter element and an engine throttle valve through the connecting assembly; the control module dynamically adjusts the oxygen generation rate and the oxygen supply pressure in combination with an engine working condition signal and the intake oxygen concentration monitored by the detection assembly in real time; the detection assembly adopts a zirconium oxide type oxygen sensor, so that the stability of oxygen concentration is ensured. The device can improve the oxygen concentration of inlet air, promote sufficient combustion of fuel oil, enhance power and reduce oil consumption; independent of a turbocharger, the risk of spontaneous combustion caused by oil splashing is avoided; the modular design is suitable for various fuel oil vehicle types, heat dissipation, air pretreatment and fault alarm functions are integrated, long-term stable operation is ensured, and a new path is provided for energy conservation and emission reduction.

Description

Technical Field

[0001] The present application relates to the technical field of automobile engine intake systems, and in particular to a device for increasing the oxygen content of vehicle intake air. Background Art

[0002] The engine intake systems of existing fuel vehicles primarily rely on natural aspiration or forced intake via a turbocharger, with the oxygen content of the air being approximately 21%. When the intake air contains insufficient oxygen, the fuel in the engine combustion chamber cannot be fully burned, resulting in power output below design, increased fuel consumption, and increased pollutant emissions.

[0003] To address this issue, some vehicles use turbochargers, which use exhaust gases to drive a turbine to increase intake pressure. However, this technology has significant drawbacks: the high operating temperature of a turbocharger can cause a vehicle's fuel, engine oil, or brake oil lines to burst due to aging, vibration, or other factors, spraying fuel, engine oil, and other fluids onto the turbocharger surface, potentially causing spontaneous combustion. Furthermore, increasing the turbocharger's intake volume does not change oxygen concentration, and incomplete combustion can still occur under high-load conditions.

[0004] Therefore, there is an urgent need for an intake system improvement device that can increase the intake oxygen concentration, avoid safety hazards, and be suitable for a variety of vehicle models. Summary of the Invention

[0005] The present application aims to solve one of the technical problems in the related art at least to a certain extent.

[0006] To achieve the above-mentioned objectives, an embodiment of the first aspect of the present application proposes a device for increasing the oxygen content of vehicle intake air, comprising an oxygen production module, a compression module, a connecting assembly, an intake branch pipe, an intake filter, an engine throttle, a control module and a detection assembly, wherein the oxygen production module is used to generate high-concentration oxygen; the input end of the compression module is sealed and connected to the outlet of the oxygen production module, and is used to compress the oxygen output by the oxygen production module; the input end of the connecting assembly is fixedly connected to the output end of the compression module, and the output end is connected to the downstream position of the intake filter of the engine intake branch pipe, and the connection point is located between the intake filter and the engine throttle; the control module is electrically connected to the oxygen production module and the compression module respectively, and is used to control the oxygen production rate of the oxygen production module and the output pressure of the compression module; the detection assembly is installed on the intake branch pipe and is located downstream of the output end of the connecting assembly, and is electrically connected to the control module, and is used to detect the oxygen concentration of the mixed gas in the intake branch pipe.

[0007] A device for increasing the oxygen content of a vehicle's intake air in an embodiment of the present application can enhance power and reduce fuel consumption by increasing the oxygen content of the engine's intake air and promoting full combustion of the fuel. It is independent of the turbocharger, avoiding the risk of spontaneous combustion caused by oil splashing, and is safer. It has a compact structure, is easy to install, and is compatible with a variety of fuel vehicle models, providing a new path for energy conservation and emission reduction.

[0008] In addition, the device for increasing the oxygen content of vehicle intake air proposed in the present application may also have the following additional technical features:

[0009] In one embodiment of the present application, the oxygen production module includes a molecular sieve adsorption unit and an airflow switching valve. The molecular sieve adsorption unit is filled with 13X molecular sieve. The airflow switching valve is arranged at the air inlet end of the molecular sieve adsorption unit and is electrically connected to the control module for controlling the adsorption and desorption cycles of the molecular sieve adsorption unit.

[0010] In one embodiment of the present application, the compression module includes a micro compressor and a pressure regulating valve. The air inlet of the micro compressor is connected to the air outlet of the oxygen production module. The pressure regulating valve is installed in the output end pipeline of the micro compressor and is electrically connected to the control module to adjust the pressure of the output oxygen to 0.15-0.3 MPa.

[0011] In one embodiment of the present application, the connecting assembly includes a high-pressure hose, a metal adapter joint and a one-way valve. One end of the high-pressure hose is fixedly connected to the output end of the compression module through the metal adapter joint, and the other end is connected to the intake branch pipe through the metal adapter joint. The one-way valve is connected in series to the side of the high-pressure hose close to the intake branch pipe, and its conduction direction is from the compression module to the intake branch pipe.

[0012] In one embodiment of the present application, the inner layer of the high-pressure hose is made of fluororubber, the outer layer is wrapped with a steel wire mesh, and its pressure resistance is not less than 0.5 MPa.

[0013] In one embodiment of the present application, the control module includes a single-chip microcomputer and an engine signal interface. The engine signal interface is electrically connected to the vehicle engine ECU and is used to obtain engine speed and throttle opening signals. The single-chip microcomputer is electrically connected to the engine signal interface, oxygen production module, and compression module respectively, and adjusts oxygen production and supply parameters according to the engine operating condition signal.

[0014] In one embodiment of the present application, the detection component is a zirconia oxygen sensor, whose detection end extends into the interior of the intake branch pipe, has a detection range of 20%-35%, and its output end is electrically connected to the signal input end of the control module for transmitting a real-time oxygen concentration signal to the control module.

[0015] In one embodiment of the present application, a heat dissipation module is also included, which includes an aluminum heat sink and a micro fan. The aluminum heat sink is attached to the outer wall of the oxygen production module, and the micro fan is installed on one side of the aluminum heat sink and is electrically connected to the control module.

[0016] In one embodiment of the present application, the air inlet end of the oxygen production module is also connected to an air pretreatment component, and the air pretreatment component includes an activated carbon filter and a precision filter connected in series. The filter element pore size of the activated carbon filter is 5-10 μm, and the filter element pore size of the precision filter is 0.1-0.2 μm.

[0017] In one embodiment of the present application, the control module further includes a fault alarm unit, which is electrically connected to the single-chip computer. When the detection component detects that the oxygen concentration of the mixed gas exceeds the range of 25%-30% and lasts for more than 5 seconds, the fault alarm unit sends an alarm signal.

[0018] The advantages of this application compared with the existing technology are:

[0019] (1) Increase the intake oxygen concentration, promote the complete combustion of fuel, help to increase engine power and reduce fuel consumption.

[0020] (2) The device is independent of the turbocharger, which can avoid the risk of spontaneous combustion caused by oil splashing onto high-temperature components, helping to improve driving safety.

[0021] (3) With modular design, the oxygen generator, compression unit, and control unit can be independently disassembled and assembled, making it suitable for a variety of fuel vehicle models. During installation, it only needs to be fixed to an empty position in the engine compartment through a bracket, without changing the main structure of the original vehicle's intake system.

[0022] (4) Dynamic adjustment of oxygen supply is achieved through closed-loop control, which can adapt to different engine operating conditions and avoid the risk of knock caused by excessive oxygen concentration.

[0023] (5) Integrated heat dissipation, pre-processing and fault diagnosis functions help ensure long-term stable operation of the device and reduce maintenance costs.

[0024] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0026] Figure 1 Schematic diagram of a device for increasing the oxygen content of vehicle intake air according to one embodiment of the present application;

[0027] Figure 2 This is a schematic diagram of the main system framework and signal flow of a device for increasing the oxygen content of vehicle intake air according to one embodiment of the present application;

[0028] Figure 3 This is a schematic diagram of an oxygen production and heat dissipation system of a device for increasing the oxygen content of vehicle intake air according to one embodiment of the present application;

[0029] Figure 4 Schematic diagram of an oxygen compression and delivery system of a device for increasing the oxygen content of vehicle intake air according to one embodiment of the present application;

[0030] Figure 5 The figure is a schematic diagram of a control and detection system of a device for increasing the oxygen content of vehicle intake air according to one embodiment of the present application.

[0031] As shown in the figure: 1. Oxygen production module; 2. Compression module; 3. Connection assembly; 4. Intake branch pipe; 5. Intake filter element; 6. Engine throttle; 7. Control module; 8. Detection assembly; 9. Engine ECU; 10. Heat dissipation module; 11. Air pretreatment assembly; 101. Molecular sieve adsorption unit; 102. Air flow switching valve; 201. Micro compressor; 202. Pressure regulating valve; 301. High-pressure hose; 302. Metal adapter; 303. One-way valve; 701. Single-chip microcomputer; 702. Engine signal interface; 703. Fault alarm unit; 1001. Aluminum heat sink; 1002. Micro fan; 1101. Activated carbon filter; 1102. Precision filter. DETAILED DESCRIPTION

[0032] The embodiments of the present application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application and are not to be construed as limiting the present application. On the contrary, the embodiments of the present application include all variations, modifications, and equivalents that fall within the spirit and scope of the appended claims.

[0033] A device for increasing the oxygen content of vehicle intake air according to an embodiment of the present application is described below with reference to the accompanying drawings.

[0034] like Figure 1-Figure 5 As shown, a device for increasing the oxygen content of vehicle intake air according to an embodiment of the present application is used. Taking a 1.6L naturally aspirated sedan as an example, the structural composition, connection relationship and workflow of the technical solution are fully explained:

[0035] Example 1: Specific structure and parameters of each module of the device

[0036] 1. Specific configuration of oxygen production module 1

[0037] The oxygen production module 1 is an integral metal shell structure (dimensions 300mm×150mm×200mm, material 304 stainless steel, wall thickness 2mm). The internal core components include:

[0038] Molecular sieve adsorption unit 101: adopts a double-tower parallel structure (the left tower and the right tower are both 80mm in diameter and 200mm in height), and each tower is filled with 13X molecular sieve (particle size 1.5mm, bulk density 0.7g / cm 3 The molecular sieve is fixed by stainless steel porous support plates (pore size 2mm) at the upper and lower ends to prevent the molecular sieve from blocking the air flow channel during operation.

[0039] Airflow switching valve 102: A four-way solenoid valve (model ZQDF-15, operating voltage 12 VDC, response time ≤ 50 ms) was selected and installed on the inlet manifold of the molecular sieve adsorption unit 101. Silicone tubing (10 mm inner diameter) connected the air inlets of the left and right towers. The switching valve was electrically connected to the relay group of the control module 7. The switching cycle was controlled by a PWM signal output by the single-chip microcomputer 701 (set to 50 seconds, with 30 seconds of adsorption and 20 seconds of desorption in the left tower, and the right tower switching in the reverse direction simultaneously).

[0040] 2. Installation and parameters of compression module 2

[0041] The compression module 2 is fixed to the right bracket of the oxygen production module 1 by M6 bolts (with a spacing of 100 mm to avoid vibration interference), specifically including:

[0042] Micro-compressor 201: A scroll micro-compressor (model VMC-120, rated power 100W, operating voltage 12VDC) was used. The air inlet was sealed and connected to the air outlet of oxygen generator module 1 (located in the center of the housing top, with a built-in stainless steel filter) via an 8mm high-pressure silicone tube. The connection was secured with a double clamp (12mm wide, made of 65Mn spring steel). A pressure buffer chamber (50mL, made of aluminum alloy) was installed at the compressor exhaust port to reduce airflow pulsation.

[0043] Pressure regulating valve 202: It is an electronic proportional regulating valve (model ITV2030, regulating range 0.05-0.5MPa, accuracy ±0.01MPa), connected in series between the buffer chamber and the connecting component 3, and connected through a 4-core shielded wire (wire diameter 0.5mm 2 ) is connected to the single chip microcomputer 701 of the control module 7, and receives the control signal in real time to adjust the output pressure (for a 1.6L naturally aspirated engine, the default output pressure is set to 0.18MPa).

[0044] 3. Specific structure of connection component 3

[0045] Connection component 3 is a customized oxygen delivery pipeline, specifically including:

[0046] High-pressure hose 301: Total length 800mm, inner layer of fluororubber (2mm thickness, Shore hardness 70±5), outer layer of woven 304 stainless steel wire mesh (0.2mm wire diameter, 80% weave density), inner diameter 10mm, outer diameter 16mm, secured to metal connectors via vulcanization at both ends to prevent detachment. The hose is wrapped in a flame-retardant insulation sleeve (made of fiberglass, 3mm thickness) to protect the hose from the high temperatures of the engine compartment (up to 120°C) that may affect its lifespan.

[0047] Metal adapter connector 302: Made of brass (chrome-plated surface for rust prevention), one end is a pagoda connector (matched with high-pressure hose 301 and fastened with a Φ16mm stainless steel clamp), and the other end is an M18×1.5 external thread connector, which is sealed with a reserved interface of the intake manifold 4 (a hole needs to be drilled and tapped on the original vehicle intake manifold, with a hole diameter of 18mm) through polytetrafluoroethylene raw tape (wrapped 5 times).

[0048] One-way valve 303: It is a spring-loaded one-way valve (model H71X-16, made of brass, with a nominal diameter of 10 mm). It is installed on the side of the high-pressure hose 301 close to the intake branch pipe 4 (50 mm away from the metal adapter joint 302). The opening pressure is set to 0.08 MPa (slightly higher than the normal pressure of the intake branch pipe 0.05 MPa). When closed, the sealing pressure is ≥0.5 MPa to ensure that the mixed gas in the intake branch pipe does not flow back to the compression module 2.

[0049] 4. Hardware and software logic of control module 7

[0050] The control module 7 is a rectangular PCB board (size 150mm×100mm, thickness 1.6mm), which is fixed to the top groove of the oxygen production module 1 by four M3 bolts. Specifically, it includes:

[0051] Microcontroller 701: The STM32F103C8T6 (32-bit ARM core, 72MHz main frequency) is connected to an external 12MHz crystal oscillator (to ensure timing accuracy). It connects to other components via 2.54mm pin headers. The microcontroller has a built-in preset program that stores oxygen supply mapping tables for different engine operating conditions (e.g., 15L / min at idle and 30L / min at 3000rpm).

[0052] Engine signal interface 702: using OBD-II standard interface (16 pins, plug model DJ7161-1.5-21), through 1.5m long shielded wire (wire diameter 0.3mm 2) is connected to the vehicle's OBD interface and can read parameters such as engine speed (signal type: pulse signal, frequency 0-10kHz), throttle opening (signal type: 0-5V analog), intake pressure (signal type: 0-5V analog) in real time, with a sampling frequency of 10Hz.

[0053] Driving circuit: The air flow switching valve (102) of the oxygen production module 1 is driven by a ULN2003 Darlington tube (maximum output current 500mA), the micro compressor 201 of the compression module 2 is controlled to start and stop by a 10A relay (model JQC-3FF), and the pressure regulating valve 202 outputs a 0-5V control signal through a DA conversion module (model DAC8551, 16-bit accuracy).

[0054] 5. Installation and parameters of detection component 8

[0055] Detection component 8 is a zirconium oxide oxygen sensor (model OXS-01, response time ≤ 100ms). Specific installation method:

[0056] A hole (18 mm in diameter) is opened on the intake branch pipe 4 at a distance of 12 cm from the output end of the connecting component 3. The sensor is connected via an M18×1.5 thread (copper sealing tape is wrapped around the thread to ensure airtightness). The detection end (zirconium tube probe) is extended 15 mm into the intake branch pipe (at a 45° angle to the direction of airflow to prevent direct airflow from impacting the probe and causing detection fluctuations).

[0057] The output end of the sensor is connected to the AD sampling interface of the control module 7 through a 3-core shielded cable (signal line, power line, ground line). The output signal is a 0-10V analog quantity (corresponding to an oxygen concentration of 20%-35%, with a linearity of ±0.5%). The sampling period is 200ms, and the mixed gas oxygen concentration is fed back in real time.

[0058] 6. Configuration of heat dissipation module 10

[0059] The heat dissipation module 10 and the oxygen production module 1 are integrated into the shell design:

[0060] Aluminum heat sink 1001: It is a comb-shaped structure (made of 6061 aluminum alloy, 3mm thick) and is attached to the outer wall of the shell corresponding to the molecular sieve adsorption unit 101 (area 200cm) through thermal conductive silicone (thermal conductivity 1.5W / (m·K)). 2 ), the heat sink height is 20mm and the spacing is 5mm to increase the heat dissipation area.

[0061] Micro fan 1002, model FD1225 (120mm × 120mm × 25mm, 12V voltage, 6 CFM air volume), is secured to the side of the heat sink (10mm from the heat sink) with four M4 bolts, with the fan outlet facing the gap between the heat sink teeth. The fan control cable is connected to the GPIO port of control module 7 and is triggered by an NTC temperature sensor (model DS18B20, measurement range -55°C to 125°C) inside the housing. The fan automatically starts when the housing temperature is detected to be ≥50°C and stops when the temperature is ≤40°C.

[0062] 7. Structure of air pre-treatment assembly 11

[0063] The air pretreatment component 11 is connected in series to the air inlet end of the oxygen production module 1 (located at the air inlet on the left side of the shell), and is a cylindrical series structure (total length 200mm, diameter 60mm):

[0064] Activated carbon filter 1101: The filter element is columnar activated carbon (made of coconut shell carbon, iodine value ≥1000mg / g), wrapped with non-woven fabric (pore size 5μm), and sealed at both ends by PU sealing rings. It can filter VOCs (such as hydrocarbons in automobile exhaust) and water vapor in the air (saturated moisture absorption capacity ≥20%). The filter element replacement cycle is 500 hours (about 20,000 kilometers).

[0065] Precision filter 1102: Located downstream of the activated carbon filter 1101, the filter element is a folded PTFE membrane (pore size 0.1μm, retention efficiency ≥99.9%), and the outer shell is made of transparent PC material (for easy observation of pollution). It can filter dust particles (such as metal debris and dust in the engine compartment) to avoid clogging the molecular sieve micropores.

[0066] 8. Logic design of fault alarm unit 703

[0067] The fault alarm unit 703 is integrated on the PCB board of the control module 7 and includes:

[0068] Signal acquisition circuit: real-time monitoring of the working current of the oxygen production module 1 (through a 0.1Ω sampling resistor in series), the output pressure of the compression module 2 (the feedback signal of the pressure regulating valve 202), and the oxygen concentration signal of the detection component 8, with a sampling frequency of 5Hz.

[0069] Fault judgment logic: When one of the following conditions is detected and lasts for more than 5 seconds, the corresponding fault code is triggered:

[0070] Oxygen concentration <25% or >30% (code E01);

[0071] Compression module output pressure> 0.3MPa (code E02);

[0072] Oxygen production module operating current> 3A (code E03);

[0073] The detection component has no signal output (code E04).

[0074] Alarm method: The fault signal is output to the vehicle ECU9 through the OBD interface of the control module 7. At the same time, the red LED indicator light of the module (located on the surface of the shell) flashes at a frequency of 1Hz to prompt the user to repair.

[0075] Example 2: Installation and fixing method of the device

[0076] The device is fixed to the vacant area on the left side of the engine compartment (avoiding high-temperature components such as the exhaust pipe and turbocharger, and at a distance of ≥300mm from the heat source) via an L-shaped aluminum alloy bracket (3mm thick, 400mm × 200mm):

[0077] The bracket is connected to the engine compartment longitudinal beam through four M8 expansion bolts (length 30mm), and spring washers are installed between the bolts and the bracket to prevent loosening due to vehicle vibration;

[0078] The bottom of the oxygen production module 1 is fixed to the bracket by four M6 bolts (with rubber shock-absorbing pads, thickness 5mm) to reduce the impact of engine vibration on the molecular sieve adsorption unit 101;

[0079] The high-pressure hose 301 of the connecting component 3 is fixed to the wiring harness bracket in the engine compartment by a plastic cable tie (width 10mm), and the spacing between the fixing points is ≤200mm to prevent the hose from being damaged by friction with other components due to vehicle bumps.

[0080] Example 3: Complete workflow

[0081] 1. Startup phase (from vehicle ignition to stable idle speed)

[0082] After the vehicle is ignited, the engine ECU 9 outputs a 12V wake-up signal. The control module 7 detects the start signal through the engine signal interface 702 and starts the oxygen production module 1 and the compression module 2 with a delay of 2 seconds (to avoid excessive instantaneous current).

[0083] The initial state of the air flow switching valve 102 of the oxygen production module 1 is that the left tower is inlet and the right tower is exhaust: the left tower draws air (flow rate 50L / min) through the air pretreatment component 11, the nitrogen in the air is adsorbed by the 13X molecular sieve, and high-concentration oxygen (purity 92%) is discharged from the left tower outlet; the right tower is evacuated to -0.08MPa by a vacuum pump (built-in micro vacuum pump, power 30W), desorbs the nitrogen adsorbed by the molecular sieve, and discharges it through the exhaust port (the exhaust port is equipped with a muffler to reduce noise);

[0084] The micro compressor 201 of the compression module 2 starts to compress the oxygen output from the oxygen production module 1 (initial pressure 0.1 MPa) to 0.18 MPa. After the pressure is stabilized by the pressure regulating valve 202, it is delivered to the intake branch pipe 4 through the connecting component 3;

[0085] The detection component 8 detects the oxygen concentration of the mixed gas in real time. In the initial stage, due to the residual air in the pipeline, the oxygen concentration is about 21%. The control module 7 adjusts the airflow switching frequency of the oxygen production module 1 through the single-chip microcomputer 701 (shortened to a 40-second cycle), increases the oxygen production rate to 25L / min, and after 30 seconds, the oxygen concentration stabilizes to 26% (idle target value).

[0086] 2. Dynamic adjustment stage (adaptation to vehicle operating conditions during driving)

[0087] Idle condition (speed 800 r / min, throttle opening 10%): Control module 7 obtains the operating condition signal through engine signal interface 702. MCU 701 calls the mapping table to control the oxygen production rate to 15 L / min, maintain the compression module output pressure at 0.18 MPa, and detection component 8 feedback that the oxygen concentration is stable at 26% ± 0.5%. The heat dissipation module 10 does not start due to the shell temperature of 35°C.

[0088] Acceleration condition (speed 3000r / min, throttle opening 80%): the engine ECU 9 outputs an acceleration signal, and the control module 7 responds within 500ms:

[0089] The oxygen production module 1 switches to dual-tower simultaneous oxygen production (both the left and right towers are in adsorption mode, and the air flow switching valve 102 closes the exhaust channel), and the oxygen production rate is increased to 35 L / min.

[0090] The pressure regulating valve 202 of the compression module 2 adjusts the output pressure to 0.22 MPa (matching the intake pressure of the intake manifold at this time);

[0091] The detection component 8 provides real-time feedback on the oxygen concentration. When it rises to 29%, the single-chip microcomputer 701 maintains a stable concentration by reducing the oxygen production rate (calling back to 30L / min);

[0092] At this time, the shell temperature of the oxygen production module 1 rises to 52°C, and the NTC sensor triggers the cooling fan 1002 to start. After 3 minutes, the temperature drops to 45°C, and the fan switches to intermittent operation (working for 30 seconds and resting for 20 seconds).

[0093] 3. Fault response phase (taking abnormal oxygen concentration as an example)

[0094] If the one-way valve 303 of the connecting component 3 is not closed tightly due to impurities, the mixed gas in the intake branch pipe 4 flows back, and the detection component 8 detects that the oxygen concentration drops to 24% and lasts for 6 seconds;

[0095] The fault alarm unit 703 of the control module 7 triggers code E01 and sends a signal to the vehicle ECU 9 through the OBD interface. The vehicle instrument panel lights up the "intake system fault" warning light, and the red LED on the device housing flashes at the same time;

[0096] The single-chip computer 701 activates the protection mechanism: the oxygen production rate is increased to a maximum of 35L / min, and the output pressure of the compression module is increased to 0.25MPa. An attempt is made to compensate for the leakage by increasing the oxygen supply. If the oxygen concentration still does not return to 25% after 1 minute, the oxygen production module 1 and the compression module 2 are automatically shut down to avoid ineffective energy consumption.

[0097] 4. Shutdown phase (vehicle shut down)

[0098] After the vehicle is turned off, the engine ECU9 cuts off the wake-up signal, and the control module 7 delays 10 seconds to shut down each module (to ensure that the residual oxygen in the pipeline is sucked into the engine for combustion to avoid accumulation);

[0099] The air flow switching valve 102 of the oxygen production module 1 is reset to the left tower exhaust and right tower adsorption state to regenerate the molecular sieve (lasting 10 seconds);

[0100] The pressure regulating valve 202 of the compression module 2 is fully opened to release the residual pressure in the pipeline to 0.05 MPa to avoid long-term high pressure damaging the hose;

[0101] The control module 7 records the working data (oxygen production time, maximum oxygen concentration, fault record) and stores it in the internal EEPROM (capacity 8KB) for subsequent maintenance and retrieval.

[0102] It can be seen from the above specific implementation methods that this device realizes the full-process closed loop of "oxygen production-compression-oxygen delivery-detection-control" through modular design. The parameters of each module are adapted to the operating requirements of the 1.6L naturally aspirated engine, and the structural details (such as connection method, heat dissipation design, and fault logic) are all feasible. Those skilled in the art can adjust the corresponding parameters according to the intake parameters of different models (such as turbocharged models need to adjust the upper limit of the compression module output pressure to 0.3MPa) to achieve wide adaptability of the solution.

[0103] It should be noted that the control method of the present application can be automatically controlled by a controller, and the control method of the controller can be implemented by simple programming by technicians in this field, which is common knowledge in this field. In addition, the present application is mainly used to protect mechanical structures, so the control method and circuit connection are no longer explained in detail in this application.

[0104] In summary, a device for increasing the oxygen content of a vehicle's intake air in an embodiment of the present application can enhance power and reduce fuel consumption by increasing the oxygen content of the engine's intake air and promoting full combustion of the fuel; it is independent of the turbocharger, avoiding the risk of spontaneous combustion caused by oil splashing, and is safer; it has a compact structure, is easy to install, and is compatible with a variety of fuel vehicle models, providing a new path for energy conservation and emission reduction.

[0105] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0106] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0107] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and deform the above embodiments within the scope of the present application.

Claims

1. A device for increasing the oxygen content of vehicle intake air, characterized in that: It comprises an oxygen production module (1), a compression module (2), a connection component (3), an intake branch pipe (4), an intake filter element (5), an engine throttle (6), a control module (7) and a detection component (8), wherein: The oxygen production module (1) is used to generate high-concentration oxygen; The input end of the compression module (2) is in sealed communication with the gas outlet of the oxygen production module (1), and is used to compress the oxygen output by the oxygen production module (1); The input end of the connecting assembly (3) is fixedly connected to the output end of the compression module (2), and the output end is connected to the downstream position of the air intake filter (5) of the engine intake branch pipe (4), and the connection point is located between the air intake filter (5) and the engine throttle (6); The control module (7) is electrically connected to the oxygen production module (1) and the compression module (2) respectively, and is used to control the oxygen production rate of the oxygen production module (1) and the output pressure of the compression module (2); The detection component (8) is installed on the intake branch pipe (4) and is located downstream of the output end of the connection component (3), and is electrically connected to the control module (7) for detecting the oxygen concentration of the mixed gas in the intake branch pipe (4).

2. The device for increasing the oxygen content of vehicle intake air according to claim 1, characterized in that: The oxygen production module (1) comprises a molecular sieve adsorption unit (101) and an air flow switching valve (102), wherein the molecular sieve adsorption unit (101) is filled with 13X molecular sieve, and the air flow switching valve (102) is arranged at the air inlet end of the molecular sieve adsorption unit (101) and is electrically connected to the control module (7) for controlling the adsorption and desorption cycles of the molecular sieve adsorption unit (101).

3. The device for increasing the oxygen content of vehicle intake air according to claim 1, characterized in that: The compression module (2) comprises a micro compressor (201) and a pressure regulating valve (202), wherein the air inlet of the micro compressor (201) is connected to the air outlet of the oxygen production module (1), and the pressure regulating valve (202) is installed in the output end pipeline of the micro compressor (201) and is electrically connected to the control module (7) for regulating the pressure of the output oxygen to 0.15-0.3 MPa.

4. The device for increasing the oxygen content of vehicle intake air according to claim 1, characterized in that: The connection assembly (3) comprises a high-pressure hose (301), a metal adapter joint (302) and a one-way valve (303); one end of the high-pressure hose (301) is fixedly connected to the output end of the compression module (2) via the metal adapter joint (302); the other end is connected to the intake branch pipe (4) via the metal adapter joint (302); the one-way valve (303) is connected in series to a side of the high-pressure hose (301) close to the intake branch pipe (4), and its conduction direction is from the compression module (2) to the intake branch pipe (4).

5. The device for increasing the oxygen content of vehicle intake air according to claim 4, characterized in that: The inner layer of the high-pressure hose (301) is made of fluororubber, and the outer layer is wrapped with a steel wire mesh, and its pressure resistance is not less than 0.5 MPa.

6. The device for increasing the oxygen content of vehicle intake air according to claim 1, characterized in that: The control module (7) comprises a single-chip microcomputer (701) and an engine signal interface (702). The engine signal interface (702) is electrically connected to a vehicle engine ECU (9) and is used to obtain engine speed and throttle opening signals. The single-chip microcomputer (701) is electrically connected to the engine signal interface (702), the oxygen production module (1), and the compression module (2) respectively, and adjusts oxygen production and supply parameters according to the engine operating condition signal.

7. The device for increasing the oxygen content of vehicle intake air according to claim 1, characterized in that: The detection component (8) is a zirconia-type oxygen sensor, the detection end of which extends into the interior of the intake branch pipe (4), with a detection range of 20%-35%, and the output end of which is electrically connected to the signal input end of the control module (7) for transmitting a real-time oxygen concentration signal to the control module (7).

8. The device for increasing the oxygen content of vehicle intake air according to claim 1, characterized in that: The invention also includes a heat dissipation module (10), wherein the heat dissipation module (10) includes an aluminum heat sink (1001) and a micro fan (1002), wherein the aluminum heat sink (1001) is attached to the outer wall of the oxygen production module (1), and the micro fan (1002) is installed on one side of the aluminum heat sink (1001) and is electrically connected to the control module (7).

9. The device for increasing the oxygen content of vehicle intake air according to claim 1, characterized in that: The air inlet end of the oxygen production module (1) is also connected to an air pretreatment component (11), and the air pretreatment component (11) comprises an activated carbon filter (1101) and a precision filter (1102) connected in series, the filter element pore size of the activated carbon filter (1101) is 5-10 μm, and the filter element pore size of the precision filter (1102) is 0.1-0.2 μm.

10. The device for increasing the oxygen content of vehicle intake air according to claim 6, characterized in that: The control module (7) further comprises a fault alarm unit (703), which is electrically connected to the single chip computer (701). When the detection component (8) detects that the oxygen concentration of the mixed gas exceeds the range of 25%-30% and lasts for more than 5 seconds, the fault alarm unit (703) sends an alarm signal.

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