CN114215650B - Device for improving wading depth of vehicle and control method thereof - Google Patents

Device for improving wading depth of vehicle and control method thereof Download PDF

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Publication number
CN114215650B
CN114215650B CN202110146652.6A CN202110146652A CN114215650B CN 114215650 B CN114215650 B CN 114215650B CN 202110146652 A CN202110146652 A CN 202110146652A CN 114215650 B CN114215650 B CN 114215650B
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China
Prior art keywords
air inlet
vehicle
air
water level
level detection
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CN202110146652.6A
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CN114215650A (en
Inventor
朱高伟
陈荣桐
曹大海
李港生
吴永涛
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Xiangyang Daan Automobile Test Center Co Ltd
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Xiangyang Daan Automobile Test Center Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D29/00—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto
    • F02D29/02—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto peculiar to engines driving vehicles; peculiar to engines driving variable pitch propellers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/0002—Controlling intake air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10006—Air intakes; Induction systems characterised by the position of elements of the air intake system in direction of the air intake flow, i.e. between ambient air inlet and supply to the combustion chamber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10242—Devices or means connected to or integrated into air intakes; Air intakes combined with other engine or vehicle parts
    • F02M35/10255—Arrangements of valves; Multi-way valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10242—Devices or means connected to or integrated into air intakes; Air intakes combined with other engine or vehicle parts
    • F02M35/10301—Flexible, resilient, pivotally or movable parts; Membranes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10373—Sensors for intake systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10373—Sensors for intake systems
    • F02M35/1038—Sensors for intake systems for temperature or pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/16—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines characterised by use in vehicles

Abstract

The invention relates to a device for improving vehicle wading depth and a control method thereof, wherein the device comprises an engine air inlet pipe, a water level detection module, an air supply pipeline, an actuating mechanism and a control system; the first end of the engine air inlet pipe is communicated with an engine air inlet of a vehicle, the second end of the engine air inlet pipe is provided with more than two ports, one of the ports is provided with a water level detection module, and the other ports are communicated with an air storage tank of a braking system and an air charging and discharging system of the vehicle through an air supply pipeline; the water level detection module comprises a metal net, the metal net is connected with the anode of a power supply module on the vehicle, and the cathode of the power supply module is connected with the vehicle body; the actuating mechanism comprises an electric valve and a plugging mechanism; the control system comprises a pressure sensor and a controller which are arranged on the air supply pipeline, and the input end of the controller is connected with the pressure sensor; the other input end of the controller is connected with the water level detection module; greatly improves the wading running depth of the vehicle and enables the vehicle to have the capability of running underwater in a short time.

Description

Device for improving wading depth of vehicle and control method thereof
Technical Field
The invention relates to the technical field of automobiles, in particular to a device for improving the wading depth of a vehicle and a control method thereof.
Technical Field
Military off-road vehicles and some special purpose vehicles can pass through ditch, marsh and the river course of some unknown degree of depth in the in-service use in-process, and engine air inlet or even whole automobile body can be submerged to ponding sometimes, and at this moment, the air inlet can lead to the vehicle to flame out because of inhaling ponding even engine damage, and the air inlet of engine becomes the main factor that restricts the vehicle depth of wading. At present, most vehicles improve the wading depth by adjusting the mounting height of an air inlet, but the integral structure of the vehicle is attractive and harmonious, so that the mounting height of the air inlet can be adjusted only within a certain range, and when ponding submerges a vehicle body, the wading running of the vehicle cannot be met by adjusting the mounting height of the air inlet.
Disclosure of Invention
The invention aims to solve the defects of the prior art, and provides a device for improving the wading depth of a vehicle, which can greatly improve the wading running depth of the vehicle without changing the position of an air inlet of the vehicle, so that the vehicle has the capability of running underwater for a short time.
Another object of the present invention is to provide a method for controlling the above apparatus for increasing a wading depth of a vehicle.
In order to achieve the purpose, the technical scheme of the invention is realized as follows: a device for improving the wading depth of a vehicle comprises an engine air inlet pipe, a water level detection module, an air supply pipeline, an execution mechanism and a control system;
the first end of the engine air inlet pipe is communicated with an engine air inlet of a vehicle, the second end of the engine air inlet pipe is provided with more than two ports, one of the ports is provided with a water level detection module, and the other ports are communicated with air storage tanks of a braking system and an inflation and deflation system of the vehicle through an air supply pipeline;
the water level detection module comprises a metal net, and the upper end of the metal net is fixed at one port of an engine air inlet pipe through a pipe hoop; the metal net is connected with the anode of a power supply module on the vehicle, the cathode of the power supply module is connected with the vehicle body, a loop is formed when accumulated water contacts the metal net, and a voltage signal is generated;
the actuating mechanism comprises electric valves arranged on each air supply pipeline and used for controlling the on-off of the air supply pipeline, and a plugging mechanism arranged below the water level detection module and used for opening and closing a first port of an air inlet pipe of the engine; the plugging mechanism comprises an electric push rod and an air inlet plug arranged on the electric push rod, the outer surface of the air inlet plug is of a conical surface structure with a small upper part and a big lower part, the outer diameter of the small end part of the air inlet plug is 0.8 times of the inner diameter of an engine air inlet pipe, and the outer diameter of the big end part of the air inlet plug is 1.1 times of the inner diameter of the engine air inlet pipe;
the control system comprises a pressure sensor and a controller which are arranged on the air supply pipeline, wherein the input end of the controller is connected with the pressure sensor and used for receiving a signal of the pressure sensor so as to control the opening degree of the electric valve; the other input end of the controller is connected with the water level detection module and used for receiving a voltage signal of the water level detection module so as to control the action of the plugging mechanism.
The controller of the control system is a singlechip.
The control system also comprises two A/D converters, a signal line of the pressure sensor is connected with an input port VIN + of one A/D converter after being amplified by the amplifier, and 8 paths of digital output ports (DB 0-DB 7) of the A/D converters are correspondingly communicated with 8 paths of input ports (P10-P17) of the single chip microcomputer one by one; the metal net is connected with an input port VIN + of another A/D converter through a circuit line, and 8 paths of digital output ports (DB 0-DB 7) of the A/D converter are correspondingly communicated with 8 paths of input ports (P20-P27) of the single chip microcomputer one by one; four output ports (P00-P03) of the single chip microcomputer are connected with the electric valve, two output ports (P04-P05) of the single chip microcomputer are respectively connected to a coil end of one electromagnetic relay, and normally open contacts of the two electromagnetic relays are connected in series on a power supply loop of the electric push rod.
A resistor with the resistance value of 1k omega is connected in series between the metal net and the anode of the power supply module.
The metal net is welded with the pipe hoop, the diameter of the metal net is 1.1 times of the outer diameter of the plug, the distance between the lower end portion of the metal net and the first port of the engine air inlet pipe is not smaller than 10cm, and the metal net is of a tubular structure with the diameter of 6mm +/-1 mm and formed by metal wires with the diameter of 2 mm.
The outer surface of the air inlet plug is made of rubber; the metal net is made of copper.
A manual control valve is arranged between the air outlet of the air storage tank and the air supply pipeline, one end of the manual control valve is in threaded connection with the air outlet of the air storage tank on the vehicle, and the other end of the manual control valve is connected with the air supply pipeline through an air pipe joint; the pressure sensor is installed on the pressure sensor installation pipe in a threaded connection mode, one end of the pressure sensor installation pipe is connected with the electric valve in series through threads and then is integrally connected to the air supply pipeline in series, and the other port of the electric valve is connected with the air supply pipeline through an air pipe connector.
The water level detection module and the power supply module of the electric push rod are 2 12V storage batteries arranged on the vehicle; the control system adopts a 5V storage battery to provide power supply.
A method for controlling the device for improving the wading depth of the vehicle comprises the following three operation modes:
wading driving mode: the control system monitors the wading depth of the vehicle according to the water level detection module, when the water level is in contact with the metal mesh, the control system receives a signal sent by the water level detection module, the controller sends out an output control signal to control the electric push rod to push out, so that the air inlet plug blocks a normal air inlet port of an engine air inlet pipe, the electric valve is controlled to be opened, and the air storage tank provides an air source for the engine of the vehicle;
gas source pressure insufficiency mode: the control system monitors the air supply pressure of the air storage tank in real time according to the pressure sensor, and when the air supply pressure of the air storage tank is smaller than a set value of 0.45mPa, the controller controls the electric valve to be closed;
normal driving mode: the control system monitors the wading depth of the vehicle according to the water level detection module, when the vehicle is not waded or the wading depth is lower than the air inlet of the engine, the controller controls the normally closed state of the electric valve, the electric push rod is controlled to retract, the air inlet of the engine is normally opened, and meanwhile the compressor is opened to inflate the air storage tank.
The control priority of the air source pressure insufficiency mode is higher than that of the wading running mode.
Compared with the prior art, the invention has the following advantages:
the invention can greatly improve the wading depth of the vehicle, the design value of the wading depth of the military off-road vehicle is generally 0.75m, the wading depth can be improved to about 1.2m by changing the position of the air inlet in the traditional mode, the wading depth of the vehicle can be improved to more than 2m without being influenced by the position of the air inlet, and the vehicle can travel underwater for about 15s on the premise of not increasing the capacity of an air storage pipe of a braking system; in addition, the structure and the control system of the device are independent from the vehicle, the control system can be closed when the device does not wade, and when the device breaks down, the normal operation of the vehicle is not influenced, so that the safety of the device is improved. In addition, when wading into water and going, the surface of water can form the wave, leads to the depth of water difference of the different positions of vehicle, and traditional water level monitoring device installs in vehicle chassis or front grid department, leads to the water level that monitors to differ with air inlet department water level, and the water level of the water level monitoring device of this patent can real-time supervision air inlet position can prevent because the surface of water wave arouses into water, has improved the security of wading into water. In addition, the outer surface of the plug is designed to be made of rubber, airtightness is guaranteed through sealing glue and the like, and wading safety is further improved.
Drawings
FIG. 1 is a schematic view of the structure of the present invention;
FIG. 2 is a schematic circuit diagram of the control system of the present invention;
in the figure: 1-a gas storage tank; 2-a manual valve; 3-a gas pipe joint; 4-a gas supply line; 5-a pressure sensor mounting tube; 6-a pressure sensor; 7-an electric valve; 8-an engine intake pipe; 9-a water level detection module; 10-air inlet plug; 11-an electric push rod; 12-an amplifier; 13-A/D converter; 14-a controller; 15-electromagnetic relay.
Detailed Description
In fig. 1, the present invention comprises: the water level detection module 9, the air supply pipeline 4, the actuating mechanism and the control system; the first end of an engine air inlet pipe 8 is communicated with an engine air inlet of a vehicle, the second end of the engine air inlet pipe is provided with more than two ports, one of the ports is provided with a water level detection module 9, and the other ports are communicated with an air storage tank 1 of a braking system and an inflation and deflation system of the vehicle through an air supply pipeline 4;
the water level detection module 9 is composed of a pipe hoop and a metal net, the metal net is made of copper materials and has the characteristics of corrosion resistance and good conductivity, the metal net is welded with the pipe hoop and is fixed at the port of an air inlet pipe of an engine through the pipe hoop, in order to prevent the metal net from interfering with a plug of an electric push rod, the diameter of the metal net is 1.1 times of the outer diameter of the plug, in order to improve the wading height of a trigger control system and ensure that the port of the air inlet pipe does not enter water before an execution mechanism operates, the lower part of the metal net exceeds the port of the air inlet pipe of the engine by 10cm, the metal net is of a tubular structure with the diameter of 6mm +/-1 mm and is composed of metal wires with the diameter of 2mm, the structural strength can be ensured, meanwhile, the contact surface with water is increased, and the detection precision is improved; further, the metal net is connected with the anode of a power supply module on the vehicle, the cathode of the power supply module is connected with the vehicle body, when accumulated water contacts the metal net, a loop is formed, a voltage signal is generated, and the voltage signal is converted into a digital signal by an A/D converter and then read by a controller 14 (STC 89C52 chip);
one end of an air supply pipeline 4 is communicated with a first port of an engine air inlet pipe 8, the other end of the air supply pipeline is communicated with one end of a manual control valve 2 through an air pipe connector 3, and the other end of the manual control valve 2 is in threaded connection with an air outlet of an air storage tank 1 on a vehicle; the manual control valve can close the device to prevent the air storage tank from leaking when the vehicle does not wade, the pressure sensor controls the opening of the electric valve by detecting the air pressure of the air storage tank to further control the air supply rate, the electric valve is controlled by a 4-phase progressive motor, the air inlet plug is conical, the outer surface of the electric valve is made of rubber, and the air tightness can be ensured;
the actuating mechanism comprises an electric valve 7 and a plugging mechanism; the electric valves 7 are arranged on the air supply pipelines 4 and are used for controlling the on-off of the air supply pipelines 4; the plugging mechanism is arranged below the water level detection module 9 and used for opening and closing a first port of an engine air inlet pipe 8; the plugging mechanism comprises an electric push rod 11 and an air inlet plug 10 arranged on the electric push rod, the outer surface of the air inlet plug 10 is of a conical surface structure with a small upper part and a large lower part, the outer diameter of the small end part of the air inlet plug 10 is 0.8 times of the inner diameter of an engine air inlet pipe, and the outer diameter of the large end part of the air inlet plug is 1.1 times of the inner diameter of the engine air inlet pipe 8;
the control system comprises a pressure sensor 6 and a controller 14 which are arranged on the air supply pipeline 4, wherein the input end of the controller is connected with the pressure sensor 6 and is used for receiving a signal of the pressure sensor 6 so as to control the opening degree of the electric valve 7; the other input end of the controller is connected with the water level detection module 9 and is used for receiving a voltage signal of the water level detection module 9 so as to control the action of the plugging mechanism; the pressure sensor 6 is installed on the pressure sensor installation pipe 5 in a threaded connection mode, one end of the pressure sensor installation pipe 5 is connected with the electric valve 7 in series through threads and then is integrally connected with the air supply pipeline 4 in series, and the other port of the electric valve 7 is connected with the air supply pipeline 4 through an air pipe connector.
In fig. 2, the controller 14 is a single chip microcomputer, the control system further includes two a/D converters, the signal line of the pressure sensor 6 is amplified by the amplifier 12 and then connected to the input port VIN + of one of the a/D converters, and the 8 digital output ports (DB 0 to DB 7) of the a/D converter are in one-to-one correspondence communication with the 8 input ports (P10 to P17) of the single chip microcomputer; the metal net is connected with an input port VIN + of another A/D converter through a circuit line, and 8 digital output ports (DB 0-DB 7) of the A/D converter are communicated with 8 input ports (P20-P27) of the single chip microcomputer in a one-to-one correspondence manner; four output ports (P00-P03) of the single chip microcomputer are connected with the electric valve 7, two output ports (P04-P05) of the single chip microcomputer are respectively connected to a coil end of one electromagnetic relay 15, and normally open contacts of the two electromagnetic relays 15 are connected in series on a power supply loop of the electric push rod 11.
In order to protect the control system, a resistor with the resistance value of 1k omega is connected in series between the metal net and the anode of the power supply module.
The water level detection module 9 and the electric push rod 11 are powered by 2 12V storage batteries arranged on the vehicle; the control system adopts a 5V storage battery to provide power supply.
The control logic is as follows: after the single chip microcomputer (STC 89C52 chip) reads the water level signal transmitted by the water level detection module 9, the electromagnetic relay 15 controls the on/off of the circuit where the electric push rod 11 is located, so as to control the movement of the electric push rod 11, and the electric push rod 11 drives the air inlet plug 10 to seal the air inlet. The pressure sensor 6 detects the air pressure of the air storage tank 1 in real time, a digital signal formed by processing a generated voltage signal through the amplifier 12 and the A/D converter 13 is read by the singlechip, the singlechip controls the opening of the electric valve 7 according to a signal transmitted by the 2A/D converters so as to control the air supply rate of the air storage tank 1 to the engine, and when the water depth is lower than the metal mesh again, the singlechip controls the electric push rod to move reversely to open the air inlet according to the same logic and simultaneously controls the electric valve to be closed.
When the vehicle wades and runs, and the water depth reaches the position of the air inlet, the water depth detection module forms a loop, and the STC89C52 chip reads a corresponding electric signal; at the moment, the singlechip control system sends an electric signal to control a circuit where the electric push rod is located to form a loop through the closing of a relay, and the electric push rod is started and can close an air inlet of the engine; meanwhile, the single chip microcomputer control system controls the electric valve to be opened, an air source is provided for the engine in a short time, the engine can be guaranteed to continue to operate, and the vehicle finishes wading running.
When the water depth is lower than the air inlet again, the single-chip microcomputer control system controls the electric push rod to open the air inlet of the engine through the same principle, the electric valve is closed at the same time, the engine recovers normal air supply, and meanwhile the air storage tank is inflated.
Because the gas storage tank stores limited gas, the capacity and the pressure of the gas storage tank configured for a certain military off-road vehicle and the gas consumption rate of the wading working condition are calculated, the wading running of the vehicle in the limit of about 15s can be met, and the underwater running time can be prolonged by increasing the capacity and the pressure of the gas storage tank subsequently.
A method for controlling the device for improving the wading depth of the vehicle comprises the following three operation modes:
wading driving mode: the control system monitors the wading depth of the vehicle according to the water level detection module 9, when the water level is in contact with the metal mesh, the control system receives a signal sent by the water level detection module 9, the controller 14 sends an output control signal to control the electric push rod 11 to push out, so that the air inlet plug 10 plugs a normal air inlet port of an engine air inlet pipe 8, the electric valve 7 is controlled to be opened, and the air storage tank 1 provides an air source for an engine of the vehicle;
gas source pressure insufficiency mode: the control system monitors the air supply pressure of the air storage tank 1 in real time according to the pressure sensor 6, and when the air supply pressure of the air storage tank 1 is smaller than a set value of 0.45mPa, the controller 14 controls the electric valve 7 to be closed; the control priority of the air source pressure insufficiency mode is higher than that of the wading running mode, and because the air storage tank 1 stores limited air, the controller 14 firstly monitors the air supply pressure of the air storage tank 1, so that the wading running mode is operated on the premise of ensuring the braking air supply of the vehicle, and the vehicle can be prevented from losing the basic braking function under the wading condition;
normal driving mode: the control system monitors the wading depth of the vehicle according to the water level detection module 9, when the vehicle does not wade or the wading depth is lower than the air inlet of the engine, the controller 14 controls the normally closed state of the electric valve 7, controls the electric push rod 11 to retract, enables the air inlet of the engine to be normally open, and simultaneously opens the compressor to inflate the air storage tank 1.
Because of the limitation of factors such as vehicle height, overall structure and pleasing to the eye, the air inlet height can only be adjusted in certain extent, and it is limited that prior art improves the degree of depth of wading. When the water level submerges the whole vehicle body, the technical scheme of the patent can not meet the requirement of wading driving of the vehicle, and the technical scheme of the patent can enable the vehicle to have underwater driving capability in a short time.
The prior art is controlled through engine ECU, and this patent is controlled through independent single chip microcomputer control system, and when not wading into water and going, the reliability of device can influence engine system's work, and the control system of this patent is independent, can close control system when not wading into water and going, does not influence vehicle normal operating when the device breaks down.
The water level monitoring device of this patent is through the water level at the metal mesh structure monitoring air inlet department of engine air inlet installation, when wading into water and going, the surface of water can form the wave, leads to the depth of water difference of the different positions of vehicle, and the water level of the water level monitoring device of this patent can real-time supervision air inlet position can prevent because the intaking that the surface of water wave arouses.

Claims (10)

1. The utility model provides an improve device of vehicle wading depth which characterized in that: the water level detection device comprises an engine air inlet pipe (8), a water level detection module (9), an air supply pipeline (4), an actuating mechanism and a control system;
the first end of the engine air inlet pipe (8) is communicated with an engine air inlet of a vehicle, the second end of the engine air inlet pipe is provided with more than two ports, one of the ports is provided with a water level detection module (9), and the other ports are communicated with an air storage tank (1) of a braking system of the vehicle through an air supply pipeline (4);
the water level detection module (9) comprises a metal net, and the upper end of the metal net is fixed at one port of an engine air inlet pipe (8) through a pipe hoop; the metal net is connected with the anode of a power supply module on the vehicle, the cathode of the power supply module is connected with the vehicle body, a loop is formed when accumulated water contacts the metal net, and a voltage signal is generated;
the actuating mechanism comprises electric valves (7) which are arranged on the air supply pipelines (4) and used for controlling the on-off of the air supply pipelines (4), and a plugging mechanism which is arranged below the water level detection module (9) and used for opening and closing a first port of an engine air inlet pipe (8); the plugging mechanism comprises an electric push rod (11) and an air inlet plug (10) arranged on the electric push rod, the outer surface of the air inlet plug (10) is of a conical surface structure with a small top and a big bottom, the outer diameter of the small end of the air inlet plug (10) is 0.8 times of the inner diameter of an engine air inlet pipe, and the outer diameter of the big end of the air inlet plug is 1.1 times of the inner diameter of the engine air inlet pipe (8);
the control system comprises a pressure sensor (6) arranged on the air supply pipeline (4) and a controller (14), wherein the input end of the controller is connected with the pressure sensor (6) and is used for receiving a signal of the pressure sensor (6) so as to control the opening degree of the electric valve (7); the other input end of the controller is connected with the water level detection module (9) and used for receiving a voltage signal of the water level detection module (9) so as to control the action of the plugging mechanism.
2. The device for improving the wading depth of the vehicle according to claim 1, wherein: the controller (14) of the control system is a singlechip.
3. An apparatus for increasing wading depth in a vehicle according to claim 1 or 2, wherein: the control system also comprises two A/D converters, a signal line of the pressure sensor (6) is connected with an input port VIN + of one A/D converter after being amplified by an amplifier (12), and 8 paths of digital output ports (DB 0-DB 7) of the A/D converters are correspondingly communicated with 8 paths of input ports (P10-P17) of the single chip microcomputer one by one; the metal net is connected with an input port VIN + of another A/D converter through a circuit line, and 8 digital output ports (DB 0-DB 7) of the A/D converter are communicated with 8 input ports (P20-P27) of the single chip microcomputer in a one-to-one correspondence manner; four paths of output ports (P00-P03) of the single chip microcomputer are connected with the electric valve (7), two paths of output ports (P04-P05) of the single chip microcomputer are respectively connected to the coil end of one electromagnetic relay (15), and normally open contacts of the two electromagnetic relays (15) are connected to a power supply loop of the electric push rod (11) in series.
4. A device for increasing wading depth of a vehicle according to claim 3, wherein: a resistor with the resistance value of 1k omega is connected in series between the metal net and the anode of the power supply module.
5. An apparatus for increasing wading depth in a vehicle according to claim 1 or 4, wherein: the metal net is welded with the pipe hoop, the diameter of the metal net is 1.1 times of the outer diameter of the plug, the distance between the lower end portion of the metal net and a first port of an engine air inlet pipe (8) is not less than 10cm, and the metal net is of a tubular structure with the diameter of 6mm +/-1 mm and formed by metal wires with the diameter of 2 mm.
6. The device for improving the wading depth of the vehicle according to claim 1, wherein: the outer surface of the air inlet plug (10) is made of rubber; the metal net is made of copper.
7. The device for improving the wading depth of the vehicle according to claim 1, wherein: a manual control valve (2) is arranged between the air outlet of the air storage tank (1) and the air supply pipeline (4), one end of the manual control valve (2) is in threaded connection with the air outlet of the air storage tank (1) on the vehicle, and the other end of the manual control valve is connected with the air supply pipeline (4) through an air pipe joint; the pressure sensor (6) is installed on the pressure sensor installation pipe (5) in a threaded connection mode, one end of the pressure sensor installation pipe (5) is integrally connected in series on the air supply pipeline (4) after being connected in series with the electric valve (7) through threads, and the other port of the electric valve (7) is connected with the air supply pipeline (4) through an air pipe connector.
8. The device for improving the wading depth of the vehicle according to claim 1, wherein: the power supply modules of the water level detection module (9) and the electric push rod (11) are 2 12V storage batteries equipped on the vehicle; the control system adopts a 5V storage battery to provide power supply.
9. A method for controlling the apparatus for increasing wading depth of a vehicle according to any one of claims 1 to 8, characterized in that: the method comprises the following three working modes:
wading driving mode: the control system monitors the wading depth of a vehicle according to the water level detection module (9), when the water level is in contact with the metal net, the control system receives a signal sent by the water level detection module (9), the controller (14) sends out an output control signal to control the electric push rod (11) to push out, so that the air inlet plug (10) plugs the normal air inlet port of an engine air inlet pipe (8), and simultaneously the electric valve (7) is controlled to be opened, and the air storage tank (1) provides an air source for an engine of the vehicle;
gas source pressure insufficiency mode: the control system monitors the air supply pressure of the air storage tank (1) in real time according to the pressure sensor (6), and when the air supply pressure of the air storage tank (1) is smaller than a set value of 0.45mPa, the controller (14) controls the electric valve (7) to be closed;
normal driving mode: the control system monitors the wading depth of the vehicle according to the water level detection module (9), when the vehicle is not waded or the wading depth is lower than the air inlet of the engine, the controller (14) controls the normally closed state of the electric valve (7) and controls the retraction of the electric push rod (11), so that the air inlet of the engine is normally opened, and meanwhile, the compressor is opened to charge the air storage tank (1).
10. A method for controlling an apparatus for increasing a wading depth of a vehicle according to claim 9, wherein: the control priority of the air source pressure insufficiency mode is higher than that of the wading running mode.
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JPH09136551A (en) * 1995-11-16 1997-05-27 Fuji Heavy Ind Ltd Intake device of engine
DE10053146A1 (en) * 2000-10-26 2002-05-08 Mann & Hummel Filter intake system
CN101259827A (en) * 2008-04-13 2008-09-10 陈通平 Auxiliary intake duct led to driving cab and control device thereof
CN206205970U (en) * 2016-11-27 2017-05-31 清远浩和仪器设计有限公司 A kind of U-shaped waterproof air inlet pipe
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