CN108757226B - Vehicle gasoline and oil gas recovery monitoring device and monitoring method thereof - Google Patents
Vehicle gasoline and oil gas recovery monitoring device and monitoring method thereof Download PDFInfo
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- CN108757226B CN108757226B CN201810491847.2A CN201810491847A CN108757226B CN 108757226 B CN108757226 B CN 108757226B CN 201810491847 A CN201810491847 A CN 201810491847A CN 108757226 B CN108757226 B CN 108757226B
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- 238000011084 recovery Methods 0.000 title claims abstract description 100
- 239000003502 gasoline Substances 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000012544 monitoring process Methods 0.000 title claims abstract description 20
- 238000012806 monitoring device Methods 0.000 title claims abstract description 14
- 239000002828 fuel tank Substances 0.000 claims abstract description 47
- 238000006073 displacement reaction Methods 0.000 claims abstract description 26
- 239000007788 liquid Substances 0.000 claims abstract description 16
- 238000002347 injection Methods 0.000 claims abstract description 3
- 239000007924 injection Substances 0.000 claims abstract description 3
- 239000003921 oil Substances 0.000 claims abstract description 3
- 239000007789 gas Substances 0.000 claims description 293
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 238000004064 recycling Methods 0.000 claims description 6
- 239000000945 filler Substances 0.000 claims description 5
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 claims description 3
- 230000008020 evaporation Effects 0.000 claims description 3
- 238000001704 evaporation Methods 0.000 claims description 3
- 239000000446 fuel Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 238000012360 testing method Methods 0.000 claims description 3
- 238000007598 dipping method Methods 0.000 claims description 2
- 239000002918 waste heat Substances 0.000 claims description 2
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000010223 real-time analysis Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- 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
- F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
- F02M25/08—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding fuel vapours drawn from engine fuel reservoir
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B77/00—Component parts, details or accessories, not otherwise provided for
- F02B77/08—Safety, indicating, or supervising devices
-
- 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
- F02D41/0025—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D41/003—Adding fuel vapours, e.g. drawn from engine fuel reservoir
-
- 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
- F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
- F02M25/08—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding fuel vapours drawn from engine fuel reservoir
- F02M25/0836—Arrangement of valves controlling the admission of fuel vapour to an engine, e.g. valve being disposed between fuel tank or absorption canister and intake manifold
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Loading And Unloading Of Fuel Tanks Or Ships (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
Abstract
The invention discloses a vehicle gasoline oil gas recovery monitoring device and a monitoring method thereof, wherein the vehicle gasoline oil gas recovery monitoring device comprises an oil gas recovery device, a control device and a cloud system; the oil gas recovery device comprises a fuel tank, gasoline, oil gas, an oil gas input pipe, a recovery device, an oil gas output pipe and an oil injection pipe; the control device comprises a liquid level sensor, an oil-gas pressure sensor, an oil-gas output valve, a recovery device pressure sensor, a crankshaft displacement sensor, a crankshaft, a connecting rod, an air inlet pipe oil-gas input valve, a throttle position sensor, an engine air inlet pipe, a control unit and an external environment pressure sensor; the cloud system comprises a vehicle-mounted transmitter, a cloud platform and a computer; according to the invention, the oil gas volatilization amount of the automobile can be monitored and summarized on the cloud platform, and the oil gas volatilization amount data is analyzed through the cloud platform system, so that the relation between the total oil gas loss amount of the automobile and the integral weather condition of the city is obtained, and a scientific basis is provided for environmental management.
Description
Technical Field
The invention particularly relates to a vehicle gasoline and oil gas recovery monitoring device and a monitoring method thereof.
Background
With the rapid development of society and economy, the requirements of people on air quality are more and more stringent, and the occurrence times of haze weather are more and more accompanied, so that various factors causing environmental pollution are highly valued; the automobile is the most concerned object, and a great amount of financial resources, material resources and manpower are input to the treatment of the automobile exhaust, so that the treatment of the automobile exhaust is well improved, but the research of the automobile oil gas is not deep enough; gasoline and oil gas are main components formed by PM2.5, and are important pollutants causing environmental pollution; 1 liter of gasoline can volatilize 100 to 400 liters of oil gas, and the influence of the oil gas on the quality of the external air is great along with the influence of the external environment (temperature, wind and the like), especially in spring and winter with less rain and dryness; the vehicle gasoline and oil gas emission is not monitored from the past, the specific influence of the gasoline and oil gas emission on the environment is not known, and great difficulty is brought to the environmental monitoring and treatment.
Aiming at the problems, the automobile gasoline oil gas recovery monitoring device is urgently needed, and can monitor and data statistics on automobile gasoline oil gas emission, so that scientific basis is provided for scientifically treating weather pollution.
Disclosure of Invention
The invention aims to provide a vehicle gasoline and oil gas recovery monitoring device and a monitoring method thereof, which can monitor the oil gas volatilization amount of each vehicle under each working condition in real time, and identify, classify and summarize oil gas volatilization amount data through a cloud platform system, thereby providing scientific basis for scientifically treating weather pollution.
The technical scheme adopted by the invention is as follows: a vehicle gasoline oil gas recovery monitoring device comprises an oil gas recovery device, a control device and a cloud system; the oil gas recovery device comprises a fuel tank, gasoline, oil gas, an oil gas input pipe, a recovery device, an oil gas output pipe and an oil injection pipe; the control device comprises a liquid level sensor, an oil-gas pressure sensor, an oil-gas output valve, a recovery device pressure sensor, a crankshaft displacement sensor, a crankshaft, a connecting rod, an air inlet pipe oil-gas input valve, a throttle position sensor, an engine air inlet pipe, a control unit and an external environment pressure sensor; the cloud system comprises a vehicle-mounted transmitter, a cloud platform and a computer; the method is characterized in that:
the fuel tank is arranged on the chassis of the vehicle and stores gasoline therein; the oil gas is stored in the upper space of the fuel tank under the condition that the oil gas output valve is not opened; the bottom of the right end of the oil gas input pipe is connected with an oil gas output valve, and the left end face is connected with the right end face of the recovery device; the upper end of the oil gas output pipe is connected with an oil gas input valve of the air inlet pipe, and the right end of the oil gas output pipe is connected with the left end face of the recovery device; the oil filler pipe is arranged on the right side of the fuel tank and has the function of filling gasoline;
the float of the liquid level sensor floats above the gasoline, and the signal output terminal of the float is connected with the input terminal of the control unit and is used for monitoring the liquid level of the gasoline; the oil pressure sensor is arranged on the inner side wall surface of the top of the fuel tank, and a signal output terminal of the oil pressure sensor is connected with an input terminal of the control unit; the oil gas output valve is arranged on the outer wall surface of the top of the fuel tank, the upper end of the oil gas output valve is connected with the lower end of the oil gas input pipe, and the input terminal of the oil gas output valve is connected with the output terminal of the control unit; the pressure sensor of the recovery device is arranged on the inner side wall of the recovery device, and the signal output terminal of the pressure sensor is connected with the input terminal of the control unit; the crankshaft displacement sensor is arranged on the right side of the right end face of the crankshaft, and a signal output terminal of the crankshaft displacement sensor is connected with an input terminal of the control unit; the crank shaft is arranged on the engine box body, and the crank is connected with the connecting rod; the top of the connecting rod is connected with a pin in the piston of the engine, and the lower end of the connecting rod is connected with a crank of the crankshaft; the oil gas input valve of the air inlet pipe is arranged on the outer wall surface of the lower end of the air inlet pipe of the engine, the lower end of the oil gas input valve is connected with the oil gas output pipe, and the signal input terminal of the oil gas input valve is connected with the output terminal of the control unit; the throttle valve position sensor is arranged on the inner wall of the upper part of the circular pipe of the air inlet pipe of the engine, and the throttle valve is arranged in the circular pipe of the air inlet pipe of the engine through a central shaft fixed on the wall surface of the air inlet pipe; the engine air inlet pipe is arranged on the right side of the engine air inlet valve; the control unit is arranged in the automobile body, and an independent output terminal is arranged on the control unit and is connected with the vehicle-mounted transmitter; the external environment pressure sensor is arranged outside the automobile, and a signal output terminal of the external environment pressure sensor is connected with an input terminal of the control unit;
the vehicle-mounted transmitter is arranged in the automobile body, and an input terminal of the vehicle-mounted transmitter is connected with an output terminal of the control unit; the cloud platform is arranged in a fixed machine room, and a single output terminal is connected with an input terminal of the computer; the computer and the cloud platform are arranged in the same machine room.
Further, the fuel tank is made of plastic.
The monitoring method of the vehicle gasoline oil gas recovery monitoring device is characterized by comprising the following steps of: the method comprises the steps of oil gas recycling process, oil gas component classification monitoring method and pressure and quality conversion relation:
(1) The oil gas recycling process comprises the following steps: the method comprises the steps that gasoline is stored in a fuel tank, oil gas in the upper space of the fuel tank is increased due to the interference of external environment, when the oil gas pressure value of the fuel tank reaches a set high-level value, a monitored oil gas pressure signal is transmitted to a control unit by an oil gas pressure sensor and is processed, the control unit sends an opening signal to an oil gas output valve, oil gas in the fuel tank flows through the oil gas output valve and an oil gas input pipe to reach a recovery device, and when the pressure in the fuel tank is reduced to the set low-level value, the control unit receives the oil gas pressure signal value of the oil gas pressure sensor and then sends a closing instruction to the oil gas output valve; when the pressure of the oil gas gathered in the recovery device is larger than the pressure value of the external environment, the pressure sensor of the recovery device transmits a signal to the control unit, and meanwhile, when the control unit monitors that the crankshaft is in a normal working state through the crankshaft displacement sensor, the control unit transmits an opening signal to the oil gas input valve of the air inlet pipe, after the oil gas input valve of the air inlet pipe is opened, the oil gas is transmitted to the cylinder of the engine under the action of pressure difference in the recovery device until the pressure value of the oil gas output by the pressure sensor of the recovery device is the same as the pressure value of the external environment, and the control unit transmits a closing instruction to the oil gas input valve of the air inlet pipe; when the oil gas pressure in the recovery device exceeds a set high-level value, and the crank shaft displacement sensor detects that the engine is in a non-working state, the pressure sensor of the recovery device sends a pressure signal to the control unit, the pressure signal is received and judged by the control unit, an opening instruction is sent to the oil gas input valve of the air inlet pipe until the oil gas pressure in the recovery device is lower than a highest set value, the pressure sensor of the recovery device sends a pressure signal to the control unit, and the control unit sends a closing instruction to the oil gas input valve of the air inlet pipe;
(2) The oil gas component classification monitoring method comprises the following steps: the liquid level sensor, the oil gas pressure sensor, the recovery device pressure sensor, the crank shaft displacement sensor and the external environment pressure sensor transmit electric signals to the control unit in real time, the electric signal data are summarized to the cloud platform through the vehicle-mounted transmitter and the receiver, and finally the oil gas volatilization amount is classified, summarized and data analyzed through the cloud platform;
when the oil level detected by the liquid level sensor is at a low limit value, and the pressure signal detected by the oil pressure sensor in the fuel tank is rapidly increased, the working condition at the moment is a refueling working condition, the recovered oil gas in the period is refueling oil gas, the control unit records the detected pressure value and sends a signal to the cloud platform in real time through the vehicle-mounted transmitter;
when the crankshaft displacement sensor does not transmit an engine running signal to the control unit any more and lasts for a period of time, the waste heat of the engine can cause oil gas to volatilize in the period of time, the recovered oil gas in the period of time is hot-dip oil gas, the timing time of the period of time is set by a timer in the control unit, the control unit records the oil gas pressure formed in the period of time in real time, and signals are sent to the cloud platform in real time through the vehicle-mounted transmitter;
when the control unit receives that the pressure value in the fuel tank is gradually increased and is maintained for a period of time, the oil gas quantity is generated in the period of time due to the evaporation of the oil gas caused by heating the fuel in the fuel tank by the atmospheric temperature, and the oil gas is volatilized into diurnal oil gas; the timing time of the section is set by a timer in the control unit, the control unit records the oil gas pressure formed in the section in real time, and signals are sent to the cloud platform in real time through the vehicle-mounted transmitter;
when the oil gas pressure in the recovery device exceeds a set high-level value, and the crank shaft displacement sensor detects that the engine is in a non-working state, the pressure sensor of the recovery device sends a pressure signal to the control unit, the pressure signal is received and judged by the control unit, an opening instruction is sent to the oil gas input valve of the air inlet pipe until the oil gas pressure in the recovery device is lower than a highest set value, the pressure sensor of the recovery device sends a pressure signal to the control unit, and the control unit sends a closing instruction to the oil gas input valve of the air inlet pipe; in the process, the recovery device releases redundant oil gas into the atmosphere, and the released oil gas is lost oil gas;
the cloud platform identifies, classifies and gathers the signals sent by each vehicle to finally obtain the total recovered oil and gas quantity and the oil and gas components under various working conditions, wherein the oil and gas components comprise an oiling oil and gas component, a hot dipping oil and gas component, a daytime oil and gas component and an oil and gas loss component; the cloud platform obtains the oil gas recovery amount of each automobile by summing the oiling oil gas component, the hot-dip oil gas component and the daytime oil gas component, and adds up the oil gas recovery amount of each automobile to obtain the total oil gas recovery amount of all automobiles; the cloud platform simultaneously accumulates the oil gas loss components of each automobile, and judges and analyzes the relation between the total oil gas loss and the external atmosphere quality;
(3) The pressure and mass conversion relation is as follows: according to the ideal gas state equation: pv= (mRT/M) available, m= pVM/RT
The pressure of the p-gas, typically in atm or kPa;
v-the volume of the gas in L;
m-molar mass of air 28.97 g/mol
R-gas constant, r= 8.314411J/mol.k
Absolute temperature of T-gas in K
The formula relation can be used for manufacturing a corresponding table between oil gas pressure and quality through multiple tests; the cloud platform corresponds the collected and classified oil gas pressure to the quality of oil gas.
The invention has the beneficial effects that: the utility model provides a vehicle gasoline oil gas recovery monitoring device and monitoring method thereof, through the oil gas volatile amount of monitoring every car and summarizing on cloud platform, real-time analysis vehicle gasoline oil gas volatile amount's influence degree to urban air quality to through cloud platform system to oil gas volatile amount data analysis, the relation between the quantity of oil gas and the urban global weather condition of obtaining, provide scientific treatment foundation for environmental management department.
Drawings
Fig. 1 is a schematic structural view of the present invention.
In the figure: the fuel tank 1, gasoline 2, oil gas 3, liquid level sensor 4, oil gas pressure sensor 5, oil gas output valve 6, oil gas input pipe 7, recovery device pressure sensor 8, recovery device 9, crank shaft displacement sensor 10, crank shaft 11, connecting rod 12, oil gas output pipe 13, intake pipe oil gas input valve 14, throttle position sensor 15, engine intake pipe 16, control unit 17, external environment pressure sensor 18, vehicle-mounted transmitter 19, cloud platform 20, computer 21, filler pipe 22, throttle 23.
Detailed Description
The following are preferred embodiments of the present invention, but are not intended to limit the scope of the present invention.
A vehicle gasoline oil gas recovery monitoring device comprises an oil gas recovery device, a control device and a cloud system; the oil gas recovery device comprises a fuel tank 1, gasoline 2, oil gas 3, an oil gas input pipe 7, a recovery device 9, an oil gas output pipe 13 and an oil filler pipe 22; the control device comprises a liquid level sensor 4, an oil-gas pressure sensor 5, an oil-gas output valve 6, a recovery device pressure sensor 8, a crankshaft displacement sensor 10, a crankshaft 11, a connecting rod 12, an air inlet pipe oil-gas input valve 14, a throttle position sensor 15, an engine air inlet pipe 16, a control unit 17 and an external environment pressure sensor 18; the cloud system comprises a vehicle-mounted transmitter 19, a cloud platform 20 and a computer 21; the method is characterized in that:
the fuel tank 1 is arranged on a chassis of the vehicle and stores gasoline 2 therein; the oil gas 3 is stored in the upper space of the fuel tank 1 under the condition that the oil gas output valve 6 is not opened; the bottom of the right end of the oil gas input pipe 7 is connected with the oil gas output valve 6, and the left end face is connected with the right end face of the recovery device 9; the upper end of the oil gas output pipe 7 is connected with an oil gas input valve 14 of an air inlet pipe, and the right end of the oil gas output pipe is connected with the left end face of the recovery device 9; the filler pipe 22 is arranged on the right side of the fuel tank 1 and has the function of filling gasoline;
the float of the liquid level sensor 4 floats above the gasoline 2, and a signal output terminal of the float is connected with an input terminal of the control unit 17 and is used for monitoring the liquid level of the gasoline 2; the oil pressure sensor 5 is arranged on the inner side wall surface at the top of the fuel tank 1, and a signal output terminal of the oil pressure sensor is connected with an input terminal of the control unit 17; the oil gas output valve 6 is arranged on the outer wall surface of the top of the fuel tank 1, the upper end of the oil gas output valve is connected with the lower end of the oil gas input pipe 7, and the input terminal of the oil gas output valve 6 is connected with the output terminal of the control unit 17; the recovery device pressure sensor 8 is arranged on the inner side wall of the recovery device 9, and a signal output terminal of the recovery device pressure sensor is connected with an input terminal of the control unit 17; the crankshaft displacement sensor 10 is arranged on the right side of the right end surface of the crankshaft 11, and a signal output terminal of the crankshaft displacement sensor is connected with an input terminal of the control unit 17; the crankshaft 11 is arranged on the engine box body, and a crank position is connected with the connecting rod 12; the top of the connecting rod 12 is connected with a pin in the piston of the engine, and the lower end of the connecting rod is connected with a crank of the crankshaft 11; the air inlet pipe oil gas input valve 14 is arranged on the outer wall surface of the lower end of the engine air inlet pipe 16, the lower end of the air inlet pipe oil gas input valve is connected with the oil gas output pipe 13, and the signal input terminal of the air inlet pipe oil gas input valve is connected with the output terminal of the control unit 17; the throttle valve position sensor 15 is arranged on the inner wall of the upper part of a circular pipe of the engine air inlet pipe, and the throttle valve 23 is arranged in the circular pipe of the engine air inlet pipe through a central shaft fixed on the wall surface of the air inlet pipe; the engine air inlet pipe 16 is arranged on the right side of an engine air inlet valve; the control unit 17 is arranged in the automobile body, and is provided with a single output terminal connected with the vehicle-mounted transmitter 19; the external environment pressure sensor 18 is arranged outside the automobile, and a signal output terminal of the external environment pressure sensor is connected with an input terminal of the control unit;
the vehicle-mounted transmitter 19 is installed inside the vehicle body, and its input terminal is connected with the output terminal of the control unit 17; the cloud platform 20 is placed in a fixed machine room, and a single output terminal is connected with an input terminal of the computer 21; the computer 21 and the cloud platform 20 are placed in the same machine room.
Further, the material of the fuel tank 1 is plastic.
The monitoring method of the vehicle gasoline oil gas recovery monitoring device is characterized by comprising the following steps of: the method comprises the steps of oil gas recycling process, oil gas component classification monitoring method and pressure and quality conversion relation:
(1) The oil gas recycling process comprises the following steps: the gasoline 2 is stored in the fuel tank 1, the oil gas 3 in the upper space of the fuel tank 1 is increased by the interference of the external environment, when the oil gas pressure value of the fuel tank 1 reaches a set high level value, the oil gas pressure sensor 5 transmits a monitored oil gas pressure signal to the control unit 17 for processing, the control unit 17 sends an opening signal to the oil gas output valve 6, the oil gas 3 in the fuel tank 1 flows through the oil gas output valve 6 and the oil gas input pipe 7 to the recovery device 9, and when the pressure in the fuel tank 1 is reduced to the set low level value, the control unit 17 receives the pressure signal value of the oil gas pressure sensor 5 and then sends a closing instruction to the oil gas output valve 6; when the pressure of the oil gas 3 accumulated in the recovery device 9 is larger than the external environment pressure value, the recovery device pressure sensor 8 transmits a signal to the control unit 17, meanwhile, when the control unit 17 monitors that the crankshaft 11 is in a normal working state through the crankshaft displacement sensor 10, the control unit 17 transmits an opening signal to the air inlet pipe oil gas input valve 14, after the air inlet pipe oil gas input valve 14 is opened, the oil gas 3 in the recovery device 9 transmits oil gas to an engine cylinder under the action of pressure difference until the oil gas pressure value output by the recovery device pressure sensor 8 is the same as the external environment pressure value, and the control unit 17 transmits a closing instruction to the air inlet pipe oil gas input valve 14; when the oil gas pressure in the recovery device 9 exceeds a set high value, and the crank displacement sensor 10 detects that the engine is in a non-working state, the recovery device pressure sensor 8 sends a pressure signal to the control unit 17, the pressure signal is received and judged by the control unit 17, an opening instruction is sent to the air inlet pipe oil gas input valve 14 until the oil gas pressure in the recovery device 9 is lower than a highest set value, the recovery device pressure sensor 8 sends a pressure signal to the control unit 17, and the control unit 17 sends a closing instruction to the air inlet pipe oil gas input valve 14;
(2) The oil gas component classification monitoring method comprises the following steps: the liquid level sensor 4, the oil gas pressure sensor 5, the recovery device pressure sensor 8, the crank shaft displacement sensor 10 and the external environment pressure sensor 18 transmit electric signals to the control unit 17 in real time, the electric signal data are summarized to the cloud platform 20 through the vehicle-mounted transmitter 19 and the receiver, and finally the oil gas volatilization amount is classified, summarized and data analyzed through the cloud platform 20;
when the oil level detected by the liquid level sensor 4 is at a low limit value, and meanwhile, the pressure signal detected by the oil pressure sensor 5 in the fuel tank 1 is rapidly increased, the working condition is a refueling working condition, the recovered oil and gas in the period is refueling oil and gas, the control unit 17 records the detected pressure value and sends a signal to the cloud platform 20 in real time through the vehicle-mounted transmitter 19;
when the crankshaft displacement sensor 10 no longer transmits an engine operation signal to the control unit 17 for a period of time, the residual heat of the engine can cause the oil gas to volatilize, the recovered oil gas in the period of time is hot-dip oil gas, the timing time of the period of time is set by a timer in the control unit 17, the control unit 17 records the oil gas pressure formed in the period of time in real time, and signals are sent to the cloud platform 20 in real time through the vehicle-mounted transmitter 19;
when the control unit 17 receives that the pressure value in the fuel tank 1 is gradually increased and is maintained for a period of time, the oil gas amount is generated during the period of time due to the evaporation of the oil gas caused by the heating of the fuel in the fuel tank 1 by the atmospheric temperature, and the oil gas volatilizes into diurnal oil gas; the timing time of the section is set by a timer in the control unit 17, and the control unit 17 records the oil gas pressure formed in the section in real time and sends a signal to the cloud platform 20 in real time through the vehicle-mounted transmitter 19;
when the oil gas pressure in the recovery device 9 exceeds a set high value, and the crank displacement sensor 10 detects that the engine is in a non-working state, the recovery device pressure sensor 8 sends a pressure signal to the control unit 17, the pressure signal is received and judged by the control unit 17, an opening instruction is sent to the air inlet pipe oil gas input valve 14 until the oil gas pressure in the recovery device 9 is lower than a highest set value, the recovery device pressure sensor 8 sends a pressure signal to the control unit 17, and the control unit 17 sends a closing instruction to the air inlet pipe oil gas input valve 14; in the process, the recovery device 9 releases redundant oil gas into the atmosphere, and the released oil gas is lost oil gas;
the cloud platform 20 identifies, classifies and gathers the signals sent by each vehicle to finally obtain the total recovered oil and gas quantity and the oil and gas components under various working conditions, wherein the oil and gas components comprise an oil and gas adding component, a hot dip oil and gas component, a diurnal oil and gas loss component; the cloud deck 20 obtains the amount of oil vapor recovery for each vehicle by summing the refueling oil vapor component, the hot dip oil vapor component, and the diurnal oil vapor component, and adds up the amount of oil vapor recovery for each vehicle to obtain the total amount of oil vapor recovery for all vehicles; the cloud platform simultaneously accumulates the oil gas loss components of each automobile, and judges and analyzes the relation between the total oil gas loss and the external atmosphere quality;
(3) The pressure and mass conversion relation is as follows: according to the ideal gas state equation: pv= (mRT/M) available, m= pVM/RT
The pressure of the p-gas, typically in atm or kPa;
v-the volume of the gas in L;
m-molar mass of air 28.97 g/mol
R-gas constant, r= 8.314411J/mol.k
Absolute temperature of T-gas in K
The formula relation can be used for manufacturing a corresponding table between oil gas pressure and quality through multiple tests; the cloud platform corresponds the collected and classified oil gas pressure to the quality of oil gas.
Although the present invention has been described in detail with reference to the foregoing examples, it will be apparent to those skilled in the art that the foregoing embodiments may be modified and practiced in the field of the invention, and that certain modifications, equivalents, improvements and substitutions may be made thereto without departing from the spirit and principles of the invention.
Claims (3)
1. A vehicle gasoline oil gas recovery monitoring device comprises an oil gas recovery device, a control device and a cloud system; the oil gas recovery device comprises a fuel tank, gasoline, oil gas, an oil gas input pipe, a recovery device, an oil gas output pipe and an oil injection pipe; the control device comprises a liquid level sensor, an oil-gas pressure sensor, an oil-gas output valve, a recovery device pressure sensor, a crankshaft displacement sensor, a crankshaft, a connecting rod, an air inlet pipe oil-gas input valve, a throttle position sensor, an engine air inlet pipe, a control unit and an external environment pressure sensor; the cloud system comprises a vehicle-mounted transmitter, a cloud platform and a computer; the method is characterized in that:
the fuel tank is arranged on the chassis of the vehicle and stores gasoline therein; the oil gas is stored in the upper space of the fuel tank under the condition that the oil gas output valve is not opened; the bottom of the right end of the oil gas input pipe is connected with an oil gas output valve, and the left end face is connected with the right end face of the recovery device; the upper end of the oil gas output pipe is connected with an oil gas input valve of the air inlet pipe, and the right end of the oil gas output pipe is connected with the left end face of the recovery device; the filler pipe is arranged on the right side of the fuel tank;
the float of the liquid level sensor floats above the gasoline, and the signal output terminal of the float is connected with the input terminal of the control unit; the oil pressure sensor is arranged on the inner side wall surface of the top of the fuel tank, and a signal output terminal of the oil pressure sensor is connected with an input terminal of the control unit; the oil gas output valve is arranged on the outer wall surface of the top of the fuel tank, the upper end of the oil gas output valve is connected with the lower end of the oil gas input pipe, and the input terminal of the oil gas output valve is connected with the output terminal of the control unit; the pressure sensor of the recovery device is arranged on the inner side wall of the recovery device, and the signal output terminal of the pressure sensor is connected with the input terminal of the control unit; the crankshaft displacement sensor is arranged on the right side of the right end face of the crankshaft, and a signal output terminal of the crankshaft displacement sensor is connected with an input terminal of the control unit; the crank shaft is arranged on the engine box body, and the crank is connected with the connecting rod; the top of the connecting rod is connected with a pin in the piston of the engine, and the lower end of the connecting rod is connected with a crank of the crankshaft; the oil gas input valve of the air inlet pipe is arranged on the outer wall surface of the lower end of the air inlet pipe of the engine, the lower end of the oil gas input valve is connected with the oil gas output pipe, and the signal input terminal of the oil gas input valve is connected with the output terminal of the control unit; the throttle valve position sensor is arranged on the inner wall of the upper part of the circular pipe of the air inlet pipe of the engine, and the throttle valve is arranged in the circular pipe of the air inlet pipe of the engine through a central shaft fixed on the wall surface of the air inlet pipe; the engine air inlet pipe is arranged on the right side of the engine air inlet valve; the control unit is arranged in the automobile body, and an independent output terminal is arranged on the control unit and is connected with the vehicle-mounted transmitter; the external environment pressure sensor is arranged outside the automobile, and a signal output terminal of the external environment pressure sensor is connected with an input terminal of the control unit;
the vehicle-mounted transmitter is arranged in the automobile body, and an input terminal of the vehicle-mounted transmitter is connected with an output terminal of the control unit; the cloud platform is arranged in a fixed machine room, and a single output terminal is connected with an input terminal of the computer; the computer and the cloud platform are arranged in the same machine room.
2. The device for monitoring the recovery of gasoline and oil gas of a vehicle according to claim 1, wherein the fuel tank is made of plastic.
3. A monitoring method using the vehicle gasoline vapor recovery monitoring device according to claim 1, characterized in that: the method comprises the steps of oil gas recycling process, oil gas component classification monitoring method and pressure and quality conversion relation:
(1) The oil gas recycling process comprises the following steps: the method comprises the steps that gasoline is stored in a fuel tank, oil gas in the upper space of the fuel tank is increased due to the interference of external environment, when the oil gas pressure value of the fuel tank reaches a set high-level value, a monitored oil gas pressure signal is transmitted to a control unit by an oil gas pressure sensor and is processed, the control unit sends an opening signal to an oil gas output valve, oil gas in the fuel tank flows through the oil gas output valve and an oil gas input pipe to reach a recovery device, and when the pressure in the fuel tank is reduced to the set low-level value, the control unit receives the oil gas pressure signal value of the oil gas pressure sensor and then sends a closing instruction to the oil gas output valve; when the pressure of the oil gas gathered in the recovery device is larger than the pressure value of the external environment, the pressure sensor of the recovery device transmits a signal to the control unit, and meanwhile, when the control unit monitors that the crankshaft is in a normal working state through the crankshaft displacement sensor, the control unit transmits an opening signal to the oil gas input valve of the air inlet pipe, after the oil gas input valve of the air inlet pipe is opened, the oil gas is transmitted to the cylinder of the engine under the action of pressure difference in the recovery device until the pressure value of the oil gas output by the pressure sensor of the recovery device is the same as the pressure value of the external environment, and the control unit transmits a closing instruction to the oil gas input valve of the air inlet pipe; when the oil gas pressure in the recovery device exceeds a set high-level value, and the crank shaft displacement sensor detects that the engine is in a non-working state, the pressure sensor of the recovery device sends a pressure signal to the control unit, the pressure signal is received and judged by the control unit, an opening instruction is sent to the oil gas input valve of the air inlet pipe until the oil gas pressure in the recovery device is lower than a highest set value, the pressure sensor of the recovery device sends a pressure signal to the control unit, and the control unit sends a closing instruction to the oil gas input valve of the air inlet pipe;
(2) The oil gas component classification monitoring method comprises the following steps: the liquid level sensor, the oil gas pressure sensor, the recovery device pressure sensor, the crank shaft displacement sensor and the external environment pressure sensor transmit electric signals to the control unit in real time, the electric signal data are summarized to the cloud platform through the vehicle-mounted transmitter and the receiver, and finally the oil gas volatilization amount is classified, summarized and data analyzed through the cloud platform;
when the oil level detected by the liquid level sensor is at a low limit value, and the pressure signal detected by the oil pressure sensor in the fuel tank is rapidly increased, the working condition at the moment is a refueling working condition, the recovered oil gas in the period is refueling oil gas, the control unit records the detected pressure value and sends a signal to the cloud platform in real time through the vehicle-mounted transmitter;
when the crankshaft displacement sensor does not transmit an engine running signal to the control unit any more and lasts for a period of time, the waste heat of the engine can cause oil gas to volatilize in the period of time, the recovered oil gas in the period of time is hot-dip oil gas, the timing time of the period of time is set by a timer in the control unit, the control unit records the oil gas pressure formed in the period of time in real time, and signals are sent to the cloud platform in real time through the vehicle-mounted transmitter;
when the control unit receives that the pressure value in the fuel tank is gradually increased and is maintained for a period of time, the oil gas quantity is generated in the period of time due to the evaporation of the oil gas caused by heating the fuel in the fuel tank by the atmospheric temperature, and the oil gas is volatilized into diurnal oil gas; the timing time of the section is set by a timer in the control unit, the control unit records the oil gas pressure formed in the section in real time, and signals are sent to the cloud platform in real time through the vehicle-mounted transmitter;
when the oil gas pressure in the recovery device exceeds a set high-level value, and the crank shaft displacement sensor detects that the engine is in a non-working state, the pressure sensor of the recovery device sends a pressure signal to the control unit, the pressure signal is received and judged by the control unit, an opening instruction is sent to the oil gas input valve of the air inlet pipe until the oil gas pressure in the recovery device is lower than a highest set value, the pressure sensor of the recovery device sends a pressure signal to the control unit, and the control unit sends a closing instruction to the oil gas input valve of the air inlet pipe; in the process, the recovery device releases redundant oil gas into the atmosphere, and the released oil gas is lost oil gas;
the cloud platform identifies, classifies and gathers the signals sent by each vehicle to finally obtain the total recovered oil and gas quantity and the oil and gas components under various working conditions, wherein the oil and gas components comprise an oiling oil and gas component, a hot dipping oil and gas component, a daytime oil and gas component and an oil and gas loss component; the cloud platform obtains the oil gas recovery amount of each automobile by summing the oiling oil gas component, the hot-dip oil gas component and the daytime oil gas component, and adds up the oil gas recovery amount of each automobile to obtain the total oil gas recovery amount of all automobiles; the cloud platform simultaneously accumulates the oil gas loss components of each automobile, and judges and analyzes the relation between the total oil gas loss and the external atmosphere quality;
(3) The pressure and mass conversion relation is as follows: according to the ideal gas state equation: pv= (mRT/M) available, m= pVM/RT
The pressure of the p-gas, typically in atm or kPa;
v-the volume of the gas in L;
m-molar mass of air 28.97 g/mol
R-gas constant, r= 8.314411J/mol.k
Absolute temperature of T-gas in K
The formula relation can be used for manufacturing a corresponding table between oil gas pressure and quality through multiple tests; the cloud platform corresponds the collected and classified oil gas pressure to the quality of oil gas.
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