CN110905698A - Engine fuel evaporation gas weight utilization system and working method thereof - Google Patents
Engine fuel evaporation gas weight utilization system and working method thereof Download PDFInfo
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- CN110905698A CN110905698A CN201911127211.0A CN201911127211A CN110905698A CN 110905698 A CN110905698 A CN 110905698A CN 201911127211 A CN201911127211 A CN 201911127211A CN 110905698 A CN110905698 A CN 110905698A
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- 239000000446 fuel Substances 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title claims description 17
- 238000001704 evaporation Methods 0.000 title claims description 7
- 230000008020 evaporation Effects 0.000 title claims description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 194
- 239000002245 particle Substances 0.000 claims abstract description 61
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 60
- 238000001179 sorption measurement Methods 0.000 claims abstract description 42
- 238000011084 recovery Methods 0.000 claims abstract description 28
- 230000005540 biological transmission Effects 0.000 claims description 102
- 230000007704 transition Effects 0.000 claims description 38
- 230000029058 respiratory gaseous exchange Effects 0.000 claims description 27
- 238000005192 partition Methods 0.000 claims description 22
- 238000004891 communication Methods 0.000 claims description 15
- 230000008569 process Effects 0.000 claims description 12
- 230000001960 triggered effect Effects 0.000 claims description 9
- 230000009471 action Effects 0.000 claims description 3
- 238000002485 combustion reaction Methods 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 238000009795 derivation Methods 0.000 claims description 2
- 239000013589 supplement Substances 0.000 claims description 2
- 238000011017 operating method Methods 0.000 claims 1
- 238000004064 recycling Methods 0.000 abstract description 3
- 238000000926 separation method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
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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
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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
- F02M25/0854—Details of the absorption canister
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Abstract
The invention discloses a recycling system for evaporated gas of engine fuel, which comprises an automobile gasoline tank, a steam adsorption carbon tank and an engine air inlet manifold, wherein a volatile steam leading-out end of the automobile gasoline tank is communicated with a steam leading-in end of the steam adsorption carbon tank through a fuel steam pipe; the fuel steam leading-out end of the steam adsorption carbon tank is communicated with the engine intake manifold through a steam recovery negative pressure pipe in a bypass mode; the slow upward movement of the movable negative pressure chamber ensures that any height position in the activated carbon particle filling cavity can generate a local negative pressure environment, so that the volatilization values of the activated carbon particles at any height position in the activated carbon particle filling cavity are consistent, and the whole volatilization amount of the activated carbon filling cavity is improved.
Description
Technical Field
The invention belongs to the field of engine oil supply systems.
Background
The activated carbon can adsorb gasoline vapor under the normal pressure state, and when the activated carbon is in a negative pressure environment, the gasoline adsorbed by the activated carbon can be volatilized again;
because the negative pressure intensity is bigger, the more thoroughly the petrol volatilizees in its active carbon, the negative pressure of current carbon tank structure connects the gas end often to be fixed, and then in the carbon tank, because gaseous negative pressure transmission has the characteristics of loss along the journey, the more near active carbon who is close to the negative pressure mouth produces negative pressure intensity, the more near active carbon who is far away from the negative pressure mouth produces negative pressure intensity less, and then make the negative pressure environment in the carbon tank inhomogeneous, because the negative pressure mouth in the carbon tank is fixed, and then only produce the most ideal negative pressure environment in negative pressure mouth local area in causing the carbon tank, the volatile volume that causes the carbon tank can not reach more ideal value.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the defects in the prior art, the invention provides the engine fuel evaporated gas weight utilization system for improving the whole negative pressure gasoline volatilization amount of the activated carbon and the working method thereof.
The technical scheme is as follows: in order to achieve the purpose, the engine fuel evaporated gas recycling system comprises an automobile gasoline tank, a steam adsorption carbon tank and an engine air inlet manifold, wherein a volatile steam leading-out end of the automobile gasoline tank is communicated with a steam leading-in end of the steam adsorption carbon tank through a fuel steam pipe; still be connected with the breathing pipe on the steam adsorption carbon tank, breathing pipe intercommunication atmospheric environment, the fuel steam derivation end of steam adsorption carbon tank passes through steam recovery negative pressure pipe bypass intercommunication engine intake manifold.
Furthermore, a pressure reducing valve is arranged on the fuel steam pipe.
Furthermore, an electromagnetic on-off valve is arranged on the steam recovery negative pressure pipe.
Further, the steam adsorption carbon tank is of a cylindrical tank body structure, a circular separation disc is integrally and coaxially arranged at the bottom of the steam adsorption carbon tank, an inner cylinder body is integrally and coaxially arranged on the upper side of the circular separation disc, and a guide column disc is integrally and coaxially arranged at the upper end of the inner cylinder body; an outer cylinder body is integrally and coaxially arranged on the upper side of the guide column disc, and the upper end of the outer cylinder body extends upwards to the upper part of the steam adsorption carbon tank; the top of the outer cylinder body is hermetically provided with an outer cylinder top wall; a horizontal annular partition disc is integrally and coaxially arranged on the outer wall of the upper end of the inner cylinder body, and the outer ring of the annular partition disc is integrally connected with the inner wall of the steam adsorption carbon tank;
a negative-pressure gas distribution column cavity is formed in the inner cylinder body, an activated carbon particle filling cavity is formed between the inner cylinder body and the inner wall of the steam adsorption carbon tank, and activated carbon particles are filled in the activated carbon particle filling cavity; a breathing cavity is formed between the annular partition disc and the top wall of the tank body of the steam adsorption carbon tank; a fuel steam transition cavity is formed between the circular partition disc and the bottom wall of the tank body of the steam adsorption carbon tank; the inner part of the outer cylinder body is provided with a negative pressure transition cavity;
a plurality of first air guide holes are uniformly and hollowly arranged on the circular partition plate between the inner wall of the steam adsorption carbon tank and the outer wall of the inner cylinder body, and the lower end of the activated carbon particle filling cavity and the fuel steam transition cavity are communicated with each other through the first air guide holes; a plurality of second air guide holes are uniformly distributed and hollowed on the wall body of the inner cylinder; a plurality of third air guide holes are uniformly distributed and hollowed in the annular partition plate, and the upper ends of the breathing cavity and the active carbon particle filling cavity are communicated with each other through the third air guide holes;
the air outlet end of the fuel steam pipe is communicated with the fuel steam transition cavity, and the breathing pipe is communicated with the breathing cavity.
Furthermore, the shaft center of the guide post disc is coaxially provided with a guide post hole, the guide post disc also comprises a movable guide pipe, the movable guide pipe coaxially and movably penetrates through the guide post hole, the outer wall of the movable guide pipe is in sliding fit with the inner wall of the guide post hole, a negative pressure transmission channel is arranged inside the guide pipe, and an opening at the upper end of the negative pressure transmission channel is communicated with the negative pressure transition cavity;
the inner wall of the inner cylinder body is provided with internal threads; the lower end of the movable guide pipe is integrally and coaxially provided with an annular outer edge, an outer ring of the annular outer edge is provided with an external thread, and the external thread of the outer ring of the annular outer edge is in threaded fit with the internal thread of the inner wall of the inner cylinder body; an air guide cylinder communicated with the negative pressure transmission channel is coaxially and integrally arranged on the lower side of the annular outer edge, the lower end of the air guide cylinder is coaxially and integrally connected with a transmission disc, an outer ring of the transmission disc is provided with an external thread, and the external thread of the outer ring of the transmission disc is in threaded fit with an internal thread of the inner wall of the inner cylinder body; a movable negative pressure chamber is formed between the annular outer edge and the transmission disc, a plurality of hollow holes are arranged on the side wall of the air guide cylinder in a hollow mode, and the movable negative pressure chamber is communicated with the lower end of the negative pressure transmission channel through the hollow holes.
Furthermore, a drive hole in a regular hexagon is hollowed out at the axis of the drive disk; the transmission shaft is in regular hexagon shape and is in sliding fit with the transmission hole, the transmission shaft penetrates through the transmission hole in a sliding mode, the transmission disc can be driven to rotate synchronously by rotation of the transmission shaft, and the transmission disc can slide up and down relative to the axis of the transmission shaft.
Further, the lower end of the transmission shaft is coaxially and rotationally matched with the axis of the circular separation disc through a bearing; the upper end of the transmission shaft extends to the top end of the negative pressure transition cavity, the top end of the transmission shaft is coaxially connected with an impeller, and the position of the impeller at the top end of the negative pressure transition cavity is a columnar impeller cavity; the impeller comprises an impeller shaft, and a plurality of vertical blades are distributed around the impeller shaft in a circumferential array divergence manner;
the impeller comprises an impeller cavity and is characterized by further comprising a left negative pressure pipe and a right negative pressure pipe which are parallel to each other and consistent with the impeller in height, wherein a left negative pressure channel and a right negative pressure channel are respectively arranged inside the left negative pressure pipe and the right negative pressure pipe; a semicircular guide plate is coaxially arranged at the lower side of the impeller, a semicircular hole for a transmission shaft to penetrate through is formed in the axis of the guide plate, the semicircular outer edge of the guide plate is integrally connected with the inner wall of the outer barrel body, which is close to one side of the left negative pressure pipe/the right negative pressure pipe, one side of the guide plate, which is far away from the left negative pressure pipe/the right negative pressure pipe, is a semicircular communication port, and the semicircular communication port mutually communicates the impeller cavity with the top end of the negative pressure transition cavity; the negative pressure in the left negative pressure channel can enable the impeller to rotate anticlockwise, and the negative pressure in the right negative pressure channel can enable the impeller to rotate clockwise;
the three interfaces of the three-way reversing valve are respectively communicated with the air outlet end of the left negative pressure pipe, the air outlet end of the right negative pressure pipe and the air inlet end of the steam recovery negative pressure pipe;
the bottom end of the negative pressure gas distribution column cavity is provided with a first microswitch, the top end of the negative pressure gas distribution column cavity is provided with a second microswitch, the annular outer edge can move upwards to trigger the second microswitch, and the transmission disc can move downwards to trigger the first microswitch;
after the first microswitch is triggered, the controller can control the three-way reversing valve to communicate the steam recovery negative pressure pipe with the right negative pressure pipe; after the second microswitch is triggered, the controller can control the three-way reversing valve to communicate the steam recovery negative pressure pipe with the left negative pressure pipe.
Further, the working method of the engine fuel evaporation gas weight utilization system comprises the following steps:
when the automobile is idle, the electromagnetic on-off valve is in a closed state, gasoline in the automobile gasoline tank can be slowly evaporated, when the pressure in the automobile gasoline tank reaches a preset value, gasoline vapor in the automobile gasoline tank can overflow into the fuel vapor transition cavity through the fuel vapor pipe, further the fuel vapor transition cavity uniformly overflows upwards into the activated carbon particle filling cavity, most of the vapor entering the activated carbon particle filling cavity is adsorbed by activated carbon particles in the upward flowing process, finally, a small amount of gasoline vapor which cannot be completely adsorbed in the activated carbon particle filling cavity overflows upwards into the breathing cavity through a plurality of third air guide holes, and finally, the gasoline vapor is discharged out of the atmospheric environment through the breathing pipe, so that the effect of reducing the gasoline vapor discharge is achieved;
the three-way reversing valve is opened in the automobile starting or engine running process, and in the initial state, the steam recovery negative pressure pipe and the right negative pressure pipe are communicated with each other through the three-way reversing valve; in the process, the right negative pressure pipe continuously sucks gas on the right side of the impeller cavity in the tangential direction, the gas in the negative pressure transition cavity is continuously supplemented to the impeller cavity through a semicircular communication port, so that continuous clockwise rotational flow is formed in the impeller cavity, the impeller rotates clockwise, the clockwise rotation of the impeller drives the transmission disc, the gas guide cylinder, the annular outer edge and the movable guide pipe to synchronously rotate through the transmission shaft, but the transmission shaft cannot interfere with the displacement of the transmission disc, the gas guide cylinder, the annular outer edge and the movable guide pipe in the axial direction; the clockwise rotation of the transmission disc and the annular outer edge can push the transmission disc and the annular outer edge upwards due to the internal thread on the inner wall of the inner cylinder, further leading the movable negative pressure chamber to move upwards slowly, leading the movable negative pressure chamber to be communicated with the inner side part of the active carbon particle filling cavity through a plurality of second air guide holes, the active carbon passing through the movable negative pressure chamber can generate strong local negative pressure, the active carbon in the local negative pressure environment can volatilize the absorbed gasoline vapor again and be sucked into the movable negative pressure chamber, the slow upward movement of the movable negative pressure chamber ensures that a primary local negative pressure environment can be generated at any height in the activated carbon particle filling cavity, the volatilization values of the activated carbon particles at any height in the activated carbon particle filling cavity are consistent, the whole volatilization amount of the activated carbon filling cavity is increased, and the activated carbon particles are finally sucked into an air inlet manifold of the engine through a steam recovery negative pressure pipe and enter an engine combustion chamber along with air;
when the movable negative pressure chamber moves upwards to the high end of the negative pressure gas distribution column cavity, the annular outer edge moves upwards to trigger a second microswitch, after the second microswitch is triggered, the controller can control the three-way reversing valve to mutually communicate the steam recovery negative pressure pipe with the left negative pressure pipe, at the moment, the left negative pressure pipe continuously sucks the gas on the left side of the impeller cavity in the tangential direction, the gas in the negative pressure transition cavity is continuously and upwards supplemented into the impeller cavity through the semicircular communication port, so that continuous anticlockwise rotational flow is formed in the impeller cavity, the impeller rotates anticlockwise, the anticlockwise rotation of the impeller can drive the transmission disc, the gas guide cylinder, the annular outer edge and the movable guide pipe to synchronously rotate anticlockwise through the transmission shaft, the anticlockwise rotation of the transmission disc and the annular outer edge can push the movable negative pressure chamber downwards due to internal threads on the inner wall of the inner cylinder body, and further the movable negative pressure chamber slowly moves downwards, the movable negative pressure chamber moves downwards slowly, so that a local negative pressure environment is generated at any height in the activated carbon particle filling cavity; when the movable negative pressure chamber moves downwards to the lower end of the negative pressure gas distribution column cavity, the transmission disc moves downwards just to trigger the first microswitch, the controller can control the three-way reversing valve to communicate the steam recovery negative pressure pipe with the right negative pressure pipe, so that the impeller rotates clockwise, the movable negative pressure chamber starts to move upwards, a local negative pressure environment can be generated at any height in the activated carbon particle filling cavity again, the movable negative pressure chamber can move up and down periodically according to the rule, and a strong negative pressure environment can be generated at any height in the activated carbon particle filling cavity periodically, so that the overall volatility of the activated carbon particle filling cavity is improved; meanwhile, the breathing tube can continuously supplement external air into the activated carbon particle filling cavity under the action of negative pressure to replace volatilized gasoline vapor.
Has the advantages that: in the process of upward or downward movement of the movable negative pressure chamber, the active carbon at the periphery where the movable negative pressure chamber passes can generate strong local negative pressure, the active carbon in the local negative pressure environment can volatilize the absorbed gasoline vapor again and is sucked into the movable negative pressure chamber, and the slow upward movement of the movable negative pressure chamber ensures that the local negative pressure environment can be generated at any height in the active carbon particle filling cavity for one time, so that the volatilization values of the active carbon particles at any height in the active carbon particle filling cavity are consistent, and the overall volatilization amount of the active carbon filling cavity is improved.
Drawings
FIG. 1 is a schematic diagram of the overall system of the present invention;
FIG. 2 is a partially enlarged schematic view of a three-way directional valve;
FIG. 3 is a schematic view of a cut-away structure of a vapor adsorption canister;
FIG. 4 is a schematic view of a first cut-away structure of the top of the outer cylinder;
FIG. 5 is a second sectional view of the top of the outer cylinder;
FIG. 6 is a horizontal cross-sectional view of the impeller;
FIG. 7 is a schematic sectional view of the inner cylinder;
FIG. 8 is a schematic sectional view of the lower part of a vapor adsorption canister;
FIG. 9 is a schematic sectional view of the upper part of the vapor adsorption canister.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
The engine fuel oil evaporation gas recycling system shown in the attached figures 1 to 9 comprises an automobile gasoline tank 4, a steam adsorption carbon tank 11 and an engine intake manifold 5, wherein a volatile steam outlet end of the automobile gasoline tank 4 is communicated with a steam inlet end of the steam adsorption carbon tank 11 through a fuel steam pipe 10; the vapor adsorption carbon tank 11 is also connected with a breathing pipe 9, the breathing pipe 9 is communicated with the atmospheric environment, and the fuel vapor leading-out end of the vapor adsorption carbon tank 11 is communicated with the engine intake manifold 5 through a vapor recovery negative pressure pipe 3 in a bypass mode; the steam recovery negative pressure pipe 3 of the present embodiment is provided with an electromagnetic on-off valve 6.
The fuel steam pipe 10 is provided with a pressure reducing valve for preventing a negative pressure environment from being formed in the oil tank and inhibiting the evaporation of the oil tank;
the steam adsorption carbon tank 11 is of a cylindrical tank body structure, a circular separation disc 36 is integrally and coaxially arranged at the inner bottom of the steam adsorption carbon tank 11, an inner cylinder body 37 is integrally and coaxially arranged on the upper side of the circular separation disc 36, and a guide column disc 47 is integrally and coaxially arranged at the upper end of the inner cylinder body 37; the upper side of the column guide disc 47 is integrally and coaxially provided with an outer cylinder body 7, and the upper end of the outer cylinder body 7 extends upwards to the upper part of the steam adsorption carbon tank 11; the top of the outer cylinder body 7 is hermetically provided with an outer cylinder top wall 20; a horizontal annular partition disc 42 is integrally and coaxially arranged on the outer wall of the upper end of the inner cylinder body 37, and the outer ring of the annular partition disc 42 is integrally connected with the inner wall of the steam adsorption carbon tank 11;
a negative-pressure gas distribution column cavity 23 is formed in the inner cylinder body 37, an activated carbon particle filling cavity 28 is formed between the inner cylinder body 37 and the inner wall of the steam adsorption carbon tank 11, and activated carbon particles 43 are filled in the activated carbon particle filling cavity 28; a breathing cavity 49 is formed between the annular partition disc 42 and the tank body top wall 100 of the steam adsorption carbon tank 11; a fuel steam transition cavity 103 is formed between the circular partition disc 36 and the tank body bottom wall 101 of the steam adsorption carbon tank 11; the inner part of the outer cylinder body 7 is provided with a negative pressure transition cavity 17;
a plurality of first air guide holes 34 are uniformly distributed and hollowed in a circular partition plate 36 between the inner wall of the steam adsorption carbon tank 11 and the outer wall of the inner cylinder 37, and the lower end of the activated carbon particle filling cavity 28 and the fuel steam transition cavity 103 are communicated with each other through each first air guide hole 34; a plurality of second air guide holes 22 are uniformly distributed and hollowed on the wall body of the inner cylinder body 37; a plurality of third air guide holes 50 are uniformly distributed and hollowed in the annular partition plate 42, and the upper ends of the breathing cavity 49 and the activated carbon particle filling cavity 28 are communicated with each other through the third air guide holes 50;
the air outlet end of the fuel steam pipe 10 is communicated with the fuel steam transition cavity 103, and the breathing pipe 9 is communicated with the breathing cavity 49.
The axial center of the guide column disc 47 is coaxially provided with a guide column hole 46, the guide column disc further comprises a movable guide tube 41, the movable guide tube 41 coaxially and movably penetrates through the guide column hole 46, the outer wall of the movable guide tube 41 is in sliding fit with the inner wall of the guide column hole 46, a negative pressure transmission channel 30 is arranged inside the guide tube 41, and an opening 40 at the upper end of the negative pressure transmission channel 30 is communicated with the negative pressure transition cavity 17;
the inner wall of the inner cylinder body 37 is provided with internal threads 21; the lower end of the movable guide pipe 41 is integrally and coaxially provided with an annular outer edge 29, an outer ring of the annular outer edge 29 is provided with an external thread, and the external thread of the outer ring of the annular outer edge 29 is in threaded fit with the internal thread 21 on the inner wall of the inner cylinder 37; an air guide cylinder 48 communicated with the negative pressure transmission channel 30 is coaxially and integrally arranged on the lower side of the annular outer edge 29, the lower end of the air guide cylinder 48 is coaxially and integrally connected with a transmission disc 31, an external thread is arranged on the outer ring of the transmission disc 31, and the external thread on the outer ring of the transmission disc 31 is in threaded fit with the internal thread 21 on the inner wall of the inner cylinder 37; a movable negative pressure chamber 24 is formed between the annular outer edge 29 and the transmission disc 31, a plurality of hollow holes 27 are hollowed in the side wall of the gas cylinder 48, and the movable negative pressure chamber 24 is communicated with the lower end of the negative pressure transmission channel 30 through each hollow hole 27.
The axle center of the transmission disc 31 is coaxially hollowed with a transmission hole 26 in a regular hexagon shape; the transmission device further comprises a transmission shaft 14 with a regular hexagonal cross section and in sliding fit with the transmission hole 26, the transmission shaft 14 penetrates through the transmission hole 26 in a sliding mode, the transmission disc 31 can be driven to rotate synchronously by the rotation of the transmission shaft 14, and the transmission disc 31 can slide up and down relative to the axis of the transmission shaft 14.
The lower end of the transmission shaft 14 is coaxially and rotationally matched with the axis of the circular partition disc 36 through a bearing 35; the upper end of the transmission shaft 14 extends to the top end of the negative pressure transition cavity 17, the top end of the transmission shaft 14 is coaxially connected with an impeller 108, and the position of the impeller 108 at the top end of the negative pressure transition cavity 17 is a columnar impeller cavity 16; the impeller 108 comprises an impeller shaft 19, and a plurality of vertical blades 18 are distributed around the impeller shaft 19 in a circumferential array and in a divergent manner;
the impeller is characterized by further comprising a left negative pressure pipe 8 and a right negative pressure pipe 1 which are parallel to each other and have the same height with the impeller 108, a left negative pressure channel 45 and a right negative pressure channel 44 are respectively arranged inside the left negative pressure pipe 8 and the right negative pressure pipe 1, the air inlet end of the left negative pressure channel 45 is communicated with the left side of the impeller cavity 16 in a tangential direction, and the right negative pressure channel 44 is communicated with the right side of the impeller cavity 16 in a tangential direction; a semicircular guide plate 13 is coaxially arranged at the lower side of the impeller 108, a semicircular hole 12 for a transmission shaft 14 to penetrate through is arranged at the axis of the guide plate 13, the semicircular outer edge of the guide plate 13 is integrally connected with the inner wall of the outer cylinder 7 at the side close to the left negative pressure pipe 8/the right negative pressure pipe 1, a semicircular communication port 15 is arranged at the side of the guide plate 13 far away from the left negative pressure pipe 8/the right negative pressure pipe 1, and the top ends of the impeller cavity 16 and the negative pressure transition cavity 17 are communicated with each other through the semicircular communication port 15; the negative pressure in the left negative pressure channel 45 can enable the impeller 108 to rotate anticlockwise, and the negative pressure in the right negative pressure channel 44 can enable the impeller 108 to rotate clockwise;
the three-way reversing valve 2 is further included, and three ports of the three-way reversing valve 2 are respectively communicated with the air outlet end of the left negative pressure pipe 8, the air outlet end of the right negative pressure pipe 1 and the air inlet end of the steam recovery negative pressure pipe 3;
the bottom end of the negative pressure gas distribution column cavity 23 is provided with a first microswitch 32, the top end of the negative pressure gas distribution column cavity 23 is provided with a second microswitch 109, the annular outer edge 29 can move upwards to trigger the second microswitch 109, and the transmission disc 31 can move downwards to trigger the first microswitch 32;
after the first microswitch 32 is triggered, the controller can control the three-way reversing valve 2 to communicate the steam recovery negative pressure pipe 3 with the right negative pressure pipe 1; after the second microswitch 109 is triggered, the controller can control the three-way reversing valve 2 to communicate the steam recovery negative pressure pipe 3 with the left negative pressure pipe 8.
The working method and the working principle of the engine fuel evaporated gas weight utilization system are as follows:
when the automobile is idle, the electromagnetic on-off valve 6 is in a closed state, gasoline in the automobile gasoline tank 4 can be slowly evaporated, when the pressure in the automobile gasoline tank 4 reaches a preset value, gasoline vapor in the automobile gasoline tank 4 can overflow into the fuel vapor transition cavity 103 through the fuel vapor pipe 10, further the gasoline vapor transition cavity 103 uniformly overflows upwards into the activated carbon particle filling cavity 28, most of the vapor entering the activated carbon particle filling cavity 28 is adsorbed 43 by activated carbon particles in the upward flowing process, finally, a small amount of gasoline vapor gas which cannot be completely adsorbed in the activated carbon particle filling cavity 28 overflows upwards into the breathing cavity 49 through the third air guide holes 50, finally, the gasoline vapor is discharged out of the atmospheric environment through the breathing pipe 9, and further the effect of reducing the gasoline vapor discharge is achieved;
the three-way reversing valve 2 is opened in the process of starting an automobile or running an engine, and in an initial state, the three-way reversing valve 2 enables the steam recovery negative pressure pipe 3 and the right negative pressure pipe 1 to be communicated with each other; the negative pressure is continuously generated in the air inlet manifold 5 of the engine due to the air suction stroke of the engine, further the negative pressure is generated in the right negative pressure pipe 1 under the communication of the three-way reversing valve 2, and finally the negative pressure transition cavity 17, the negative pressure transmission channel 30 and the movable negative pressure chamber 24 generate stable negative pressure due to the communication relation, in the process, the gas on the right side of the impeller cavity 16 is continuously sucked away by the right negative pressure pipe 1 along the tangential direction, the gas in the negative pressure transition cavity 17 is continuously supplemented into the impeller cavity 16 upwards through the semicircular communication port 15, thereby forming continuous clockwise rotation in the impeller cavity 16 and further rotating the impeller 108 clockwise, the clockwise rotation of the impeller 108 drives the transmission disc 31, the gas cylinder 48, the annular outer edge 29 and the movable guide tube 41 to rotate synchronously through the transmission shaft 14, but the transmission shaft 14 does not interfere with the displacement of the transmission disc 31, the gas cylinder 48, the annular outer edge 29 and the movable guide tube 41 in the axial direction; the clockwise rotation of the transmission disc 31 and the annular outer edge 29 can push the transmission disc and the annular outer edge 29 upwards due to the internal thread 21 on the inner wall of the inner cylinder 37, so that the movable negative pressure chamber 24 slowly moves upwards, the movable negative pressure chamber is communicated with the inner side part of the activated carbon particle filling cavity 28 through the plurality of second air guide holes 22, in the upward movement process of the movable negative pressure chamber 24, the active carbon on the periphery through which the movable negative pressure chamber 24 passes can generate strong local negative pressure, the activated carbon in the local negative pressure environment can volatilize the absorbed gasoline vapor again and suck the gasoline vapor into the movable negative pressure chamber 24, the slow upward movement of the movable negative pressure chamber 24 ensures that a local negative pressure environment can be generated at any height in the activated carbon particle filling cavity 28, further, the volatilization values of the activated carbon particles at any height in the activated carbon particle filling cavity 28 are consistent, and the whole volatilization amount of the activated carbon filling cavity 28 is improved, finally, the steam is sucked into an air inlet manifold 5 of the engine through a steam recovery negative pressure pipe 3 and enters an engine combustion chamber along with air;
when the movable negative pressure chamber 24 moves upwards to the high end of the negative pressure gas distribution column cavity 23, the annular outer edge 29 moves upwards to trigger the second microswitch 109, after the second microswitch 109 is triggered, the controller controls the three-way reversing valve 2 to communicate the steam recovery negative pressure pipe 3 with the left negative pressure pipe 8, at the moment, the left negative pressure pipe 8 continuously sucks away gas on the left side of the impeller cavity 16 along the tangential direction, the gas in the negative pressure transition cavity 17 is continuously supplemented upwards into the impeller cavity 16 through the semicircular communication port 15, so that continuous anticlockwise rotational flow is formed in the impeller cavity 16, the impeller 108 rotates anticlockwise, the anticlockwise rotation of the impeller 108 drives the transmission disc 31, the gas guide tube 48, the annular outer edge 29 and the movable guide tube 41 to synchronously rotate anticlockwise through the transmission shaft 14, the anticlockwise rotation of the transmission disc 31 and the annular outer edge 29 can make the impeller downwards due to the internal thread 21 on the inner wall of the inner cylinder 37, further, the movable negative pressure chamber 24 moves downwards slowly, and the movable negative pressure chamber 24 moves downwards slowly, so that the situation that a local negative pressure environment is generated at any height in the activated carbon particle filling cavity 28 is ensured; when the movable negative pressure chamber 24 moves downwards to the lower end of the negative pressure gas distribution column cavity 23, the transmission disc 31 just moves downwards to trigger the first microswitch 32, the controller can control the three-way reversing valve 2 to communicate the steam recovery negative pressure pipe 3 with the right negative pressure pipe 1, so that the impeller 108 rotates clockwise, the movable negative pressure chamber 24 starts to move upwards, a local negative pressure environment can be generated at any height in the activated carbon particle filling cavity 28 again, the movable negative pressure chamber 24 can move up and down periodically according to the rule, and a strong negative pressure environment can be generated at any height in the activated carbon particle filling cavity 28 periodically, so that the overall volatility in the activated carbon particle filling cavity 28 is improved; at the same time, the breathing tube continuously replenishes external air into the activated carbon particle filled cavity 28 under the action of negative pressure to replace volatilized gasoline vapor.
The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.
Claims (8)
1. Engine fuel evaporation gas weight utilizes system, its characterized in that: the device comprises an automobile gasoline tank (4), a steam adsorption carbon tank (11) and an engine air inlet manifold (5), wherein a volatile steam leading-out end of the automobile gasoline tank (4) is communicated with a steam leading-in end of the steam adsorption carbon tank (11) through a fuel steam pipe (10); still be connected with breathing pipe (9) on steam adsorption carbon tank (11), breathing pipe (9) intercommunication atmospheric environment, the fuel steam derivation end of steam adsorption carbon tank (11) passes through steam recovery negative pressure pipe (3) bypass intercommunication engine intake manifold (5).
2. The engine fuel boil-off gas weight utilization system according to claim 1, characterized in that: the fuel steam pipe (10) is provided with a pressure reducing valve.
3. The engine fuel boil-off gas weight utilization system according to claim 2, characterized in that: an electromagnetic opening and closing valve (6) is arranged on the steam recovery negative pressure pipe (3).
4. The engine fuel boil-off gas weight utilization system according to claim 3, characterized in that: the steam adsorption carbon tank (11) is of a cylindrical tank body structure, a circular partition disc (36) is integrally and coaxially arranged at the inner bottom of the steam adsorption carbon tank (11), an inner cylinder body (37) is integrally and coaxially arranged on the upper side of the circular partition disc (36), and a guide column disc (47) is integrally and coaxially arranged at the upper end of the inner cylinder body (37); an outer cylinder body (7) is integrally and coaxially arranged on the upper side of the column guide disc (47), and the upper end of the outer cylinder body (7) extends upwards to the upper part of the steam adsorption carbon tank (11); the top of the outer cylinder body (7) is hermetically provided with an outer cylinder top wall (20); a horizontal annular partition disc (42) is integrally and coaxially arranged on the outer wall of the upper end of the inner cylinder body (37), and the outer ring of the annular partition disc (42) is integrally connected with the inner wall of the steam adsorption carbon tank (11);
a negative-pressure gas distribution column cavity (23) is formed in the inner cylinder body (37), an activated carbon particle filling cavity (28) is formed between the inner cylinder body (37) and the inner wall of the steam adsorption carbon tank (11), and activated carbon particles (43) are filled in the activated carbon particle filling cavity (28); a breathing cavity (49) is formed between the annular partition disc (42) and the tank body top wall (100) of the steam adsorption carbon tank (11); a fuel steam transition cavity (103) is formed between the circular partition disc (36) and the tank body bottom wall (101) of the steam adsorption carbon tank (11); the inner part of the outer cylinder body (7) is a negative pressure transition cavity (17);
a plurality of first air guide holes (34) are uniformly distributed and hollowed in a circular partition plate (36) between the inner wall of the steam adsorption carbon tank (11) and the outer wall of the inner cylinder body (37), and the lower end of the activated carbon particle filling cavity (28) is communicated with the fuel steam transition cavity (103) through each first air guide hole (34); a plurality of second air guide holes (22) are uniformly distributed and hollowed on the wall body of the inner cylinder body (37); a plurality of third air guide holes (50) are uniformly distributed and hollowed in the annular partition plate (42), and the upper ends of the breathing cavity (49) and the activated carbon particle filling cavity (28) are communicated with each other through the third air guide holes (50);
the air outlet end of the fuel steam pipe (10) is communicated with the fuel steam transition cavity (103), and the breathing pipe (9) is communicated with the breathing cavity (49).
5. The engine fuel boil-off gas weight utilization system according to claim 1, characterized in that: the guide post disc comprises a guide post hole (46) and a movable guide pipe (41), wherein the axis of the guide post disc (47) is coaxially provided with a guide post hole (46), the movable guide pipe (41) coaxially and movably penetrates through the guide post hole (46), the outer wall of the movable guide pipe (41) is in sliding fit with the inner wall of the guide post hole (46), a negative pressure transmission channel (30) is arranged inside the guide pipe (41), and an opening (40) at the upper end of the negative pressure transmission channel (30) is communicated with the negative pressure transition cavity (17);
the inner wall of the inner cylinder body (37) is provided with internal threads (21); the lower end of the movable guide pipe (41) is integrated and coaxially provided with an annular outer edge (29), an outer ring of the annular outer edge (29) is provided with an external thread, and the external thread of the outer ring of the annular outer edge (29) is in threaded fit with the internal thread (21) on the inner wall of the inner cylinder body (37); an air guide cylinder (48) communicated with the negative pressure transmission channel (30) is coaxially and integrally arranged on the lower side of the annular outer edge (29), a transmission disc (31) is coaxially and integrally connected to the lower end of the air guide cylinder (48), an external thread is arranged on the outer ring of the transmission disc (31), and the external thread of the outer ring of the transmission disc (31) is in threaded fit with the internal thread (21) on the inner wall of the inner cylinder body (37); a movable negative pressure chamber (24) is formed between the annular outer edge (29) and the transmission disc (31), a plurality of hollow holes (27) are arranged on the side wall of the gas cylinder (48) in a hollow manner, and the movable negative pressure chamber (24) is communicated with the lower end of the negative pressure transmission channel (30) through the hollow holes (27).
6. The engine fuel boil-off gas weight utilization system according to claim 1, characterized in that: the axle center of the transmission disc (31) is coaxially hollowed with a transmission hole (26) in a regular hexagon shape; the transmission device is characterized by further comprising a transmission shaft (14) with a regular hexagonal cross section and in sliding fit with the transmission hole (26), wherein the transmission shaft (14) penetrates through the transmission hole (26) in a sliding mode, the transmission disc (31) can be driven to rotate synchronously by rotation of the transmission shaft (14), and the transmission disc (31) can slide up and down relative to the axis of the transmission shaft (14).
7. The engine fuel boil-off gas weight utilization system according to claim 1, characterized in that: the lower end of the transmission shaft (14) is coaxially and rotationally matched with the axis of the circular partition disc (36) through a bearing (35); the upper end of the transmission shaft (14) extends to the top end of the negative pressure transition cavity (17), the top end of the transmission shaft (14) is coaxially connected with an impeller (108), and the position of the impeller (108) at the top end of the negative pressure transition cavity (17) is a columnar impeller cavity (16); the impeller (108) comprises an impeller shaft (19), and a plurality of vertical blades (18) are distributed around the impeller shaft (19) in a circumferential array divergence manner;
the impeller is characterized by further comprising a left negative pressure pipe (8) and a right negative pressure pipe (1) which are parallel to each other and have the same height with the impeller (108), wherein a left negative pressure channel (45) and a right negative pressure channel (44) are respectively arranged inside the left negative pressure pipe (8) and the right negative pressure pipe (1), the air inlet end of the left negative pressure channel (45) is communicated with the left side of the impeller cavity (16) in a tangential direction, and the right negative pressure channel (44) is communicated with the right side of the impeller cavity (16) in a tangential direction; a semicircular guide plate (13) is coaxially arranged at the lower side of the impeller (108), a semicircular hole (12) for a transmission shaft (14) to penetrate through is formed in the axis of the guide plate (13), the semicircular outer edge of the guide plate (13) is integrally connected with the inner wall of the outer barrel (7) at one side close to the left negative pressure pipe (8)/the right negative pressure pipe (1), a semicircular communication port (15) is formed in one side, far away from the left negative pressure pipe (8)/the right negative pressure pipe (1), of the guide plate (13), and the impeller cavity (16) is communicated with the top end of the negative pressure transition cavity (17) through the semicircular communication port (15); the negative pressure in the left negative pressure channel (45) can enable the impeller (108) to rotate anticlockwise, and the negative pressure in the right negative pressure channel (44) can enable the impeller (108) to rotate clockwise;
the three interfaces of the three-way reversing valve (2) are respectively communicated with the air outlet end of the left negative pressure pipe (8), the air outlet end of the right negative pressure pipe (1) and the air inlet end of the steam recovery negative pressure pipe (3);
a first microswitch (32) is installed at the bottom end of the negative pressure air distribution column cavity (23), a second microswitch (109) is installed at the top end of the negative pressure air distribution column cavity (23), the annular outer edge (29) can move upwards to trigger the second microswitch (109), and the transmission disc (31) can move downwards to trigger the first microswitch (32);
after the first microswitch (32) is triggered, the controller can control the three-way reversing valve (2) to communicate the steam recovery negative pressure pipe (3) with the right negative pressure pipe (1); after the second microswitch (109) is triggered, the controller can control the three-way reversing valve (2) to communicate the steam recovery negative pressure pipe (3) with the left negative pressure pipe (8).
8. The operating method of the engine fuel evaporation gas weight utilization system according to claim 7, characterized in that:
when the automobile is idle, the electromagnetic on-off valve (6) is in a closed state, the gasoline in the automobile gasoline tank (4) can be slowly evaporated, when the pressure in the automobile gasoline tank (4) reaches a preset value, gasoline steam in the automobile gasoline tank (4) overflows to a fuel steam transition cavity (103) through a fuel steam pipe (10), further the fuel vapor transition cavity (103) uniformly overflows upwards to the activated carbon particle filling cavity (28), most of the steam entering the activated carbon particle filling cavity (28) is adsorbed (43) by the activated carbon particles in the upward flowing process, and finally, a small amount of gasoline steam gas which cannot be completely adsorbed in the activated carbon particle filling cavity (28) overflows upwards into the breathing cavity (49) through the third air guide holes (50), and is finally discharged out of the atmospheric environment through the breathing pipe (9), so that the gasoline steam emission is reduced;
the three-way reversing valve (2) is opened in the process of starting an automobile or running an engine, and in an initial state, the steam recovery negative pressure pipe (3) and the right negative pressure pipe (1) are communicated with each other through the three-way reversing valve (2); the air intake manifold (5) of the engine can continuously generate negative pressure due to the air suction stroke of the engine, further the right negative pressure pipe (1) can generate negative pressure under the communication of the three-way reversing valve (2), and finally stable negative pressure can be generated due to the communication relation among the negative pressure transition cavity (17), the negative pressure transmission channel (30) and the movable negative pressure chamber (24), in the process, the right negative pressure pipe (1) continuously sucks the gas on the right side of the impeller cavity (16) along the tangential direction, the gas in the negative pressure transition cavity (17) is continuously supplemented upwards into the impeller cavity (16) through the semicircular communication port (15), further continuous clockwise rotational flow is formed in the impeller cavity (16), further the impeller (108) rotates clockwise, the clockwise rotation of the impeller (108) can drive the transmission disc (31), the air guide cylinder (48), the annular outer edge (29) and the movable guide pipe (41) to synchronously rotate through the transmission shaft (14), but the transmission shaft (14) does not interfere with the displacement of the transmission disc (31), the gas cylinder (48), the annular outer edge (29) and the movable guide tube (41) along the axial direction; the clockwise rotation of the transmission disc (31) and the annular outer edge (29) can push the movable negative pressure chamber (24) upwards due to the internal threads (21) on the inner wall of the inner cylinder body (37), the movable negative pressure chamber is communicated with the inner side part of the activated carbon particle filling cavity (28) through a plurality of second air guide holes (22), the activated carbon passing through the movable negative pressure chamber (24) can generate strong local negative pressure in the upward movement process of the movable negative pressure chamber (24), the activated carbon in the local negative pressure environment can volatilize the absorbed gasoline vapor again and is sucked into the movable negative pressure chamber (24), the movable negative pressure chamber (24) moves upwards slowly to ensure that the local negative pressure environment can be generated at any height in the activated carbon particle filling cavity (28), and further the volatilization value of the activated carbon particles at any height in the activated carbon particle filling cavity (28) is consistent, the whole volatilization amount of the activated carbon filling cavity (28) is improved, and the activated carbon filling cavity is finally sucked into an air inlet manifold (5) of an engine through a steam recovery negative pressure pipe (3) and enters an engine combustion chamber along with air;
when the movable negative pressure chamber (24) moves upwards to the high end of the negative pressure gas distribution column cavity (23), the annular outer edge (29) moves upwards to trigger the second microswitch (109), after the second microswitch (109) is triggered, the controller can control the three-way reversing valve (2) to communicate the steam recovery negative pressure pipe (3) with the left negative pressure pipe (8), at the moment, the left negative pressure pipe (8) continuously sucks the gas on the left side of the impeller cavity (16) along the tangential direction, the gas in the negative pressure transition cavity (17) is continuously supplemented upwards into the impeller cavity (16) through the semicircular communicating port (15), so that continuous anticlockwise rotational flow is formed in the impeller cavity (16), and further the impeller (108) rotates anticlockwise, the anticlockwise rotational flow of the impeller (108) can drive the transmission disc (31), the gas guide cylinder (48), the annular outer edge (29) and the movable guide pipe (41) to synchronously rotate anticlockwise through the transmission shaft (14), the counterclockwise rotation of the transmission disc (31) and the annular outer edge (29) can push the transmission disc and the annular outer edge (29) downwards due to the internal thread (21) on the inner wall of the inner cylinder body (37), so that the movable negative pressure chamber (24) slowly moves downwards, and the movable negative pressure chamber (24) slowly moves downwards to ensure that a local negative pressure environment is generated at any height in the activated carbon particle filling cavity (28) again; when the movable negative pressure chamber (24) moves downwards to the lower end of the negative pressure gas distribution column cavity (23), the transmission disc (31) just moves downwards to trigger the first microswitch (32), the controller can control the three-way reversing valve (2) to communicate the steam recovery negative pressure pipe (3) with the right negative pressure pipe (1) so as to enable the impeller (108) to rotate clockwise, the movable negative pressure chamber (24) starts to move upwards, a local negative pressure environment can be generated at any height in the activated carbon particle filling cavity (28) again, the movable negative pressure chamber (24) can move up and down periodically according to the rule, and further the active carbon particle filling cavity (28) can generate a strong negative pressure environment at any height periodically, so that the overall volatility in the activated carbon particle filling cavity (28) is improved; meanwhile, the breathing tube can continuously supplement external air into the activated carbon particle filling cavity (28) under the action of negative pressure to replace volatilized gasoline vapor.
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