CN201943848U - Shutoff valve of control system for exhausting fuel oil evaporated gas - Google Patents
Shutoff valve of control system for exhausting fuel oil evaporated gas Download PDFInfo
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- CN201943848U CN201943848U CN2010206535407U CN201020653540U CN201943848U CN 201943848 U CN201943848 U CN 201943848U CN 2010206535407 U CN2010206535407 U CN 2010206535407U CN 201020653540 U CN201020653540 U CN 201020653540U CN 201943848 U CN201943848 U CN 201943848U
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- fuel
- control system
- stop valve
- emission control
- shell
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Abstract
The utility model relates to a shutoff valve of a control system for exhausting fuel oil evaporated gas, consisting of an outer shell penetrating through the outer wall of a fuel oil box, fixed on the upper part of the fuel oil box and fixed in the fuel oil box, an inner shell fixed at the inner part of the outer shell, a main hole formed above the inner shell and connected with the channel of the outer shell, and a side hole penetrating through the side walls of the outer shell and the inner shell, wherein the diameter of the side hole is smaller than that of the main hole. By using the shutoff valve of the utility model, the leakage of the fuel oil evaporated gas (hydrocarbon compounds HC) is automatically detected so as to prevent the excessive oiling and the counterflow of the fuel oil when automobile is overturned, thereby saving cost and reducing weight.
Description
Technical field
The utility model relates to the stop valve of fuel evaporation gaseous emission control system, when detecting the leakage of fuel evaporation gas (HC) voluntarily, the negative pressure of fuel tank is produced the utility model and the elimination process can normally be carried out, and, have and prevent to refuel excessive function.
Background technique
Generally speaking, contain hydrocarbon (HC) in the fuel evaporation gas that evaporates in fuel tank, this fuel evaporation gas is not only harmful, and environment is polluted.Therefore, prevent the fuel evaporation gaseous emission control system that fuel evaporation gas discharges in installation on the automobile in atmosphere.
Above-mentioned fuel evaporation gaseous emission control system comprises the activated carbon canister mode of using active carbon and the crankcase storage mode that fuel evaporation gas is introduced to crankcase, and the air filter storage mode that fuel evaporation gas is introduced to air filter.
Fig. 1 is the simple structure schematic representation of the fuel evaporation gaseous emission control system of employing charcoal canister mode.
As shown in Figure 1, fuel evaporation gaseous emission control system comprises: the fuel tank (1) that stores fuel oil; Be respectively equipped with vent, and be installed in the full spacing outlet valve (2) and the roll-over valve (3) on fuel tank (1) top; Detect the pressure transducer (4) of fuel tank (1) internal pressure; Collect the detoxication can (5) of the fuel evaporation gas (HC) of evaporation in the fuel tank (1); The breathing pipe (6) that connects full spacing outlet valve (2) vent and detoxication can (5) inlet; Connect detoxication can (5) outlet and motor (7) induction mnifold, simultaneously, the breathing pipe (9) that purifies control electromagnetic valve (8) is housed; Be installed on the detoxication can (5) the detoxication can cut-off valve (11) that is connected with fuel pipe (10) simultaneously; And be installed on the fuel tank (1), and prevent the horizontal pipe (12) of excessive oiling.
Wherein, the vent of roll-over valve (3) is connected with breathing pipe (13), and the vent and the detoxication can (5) that connect full spacing outlet valve (2) by breathing pipe (6) enter the mouth, and simultaneously, two breathing pipes (6 and 13) are connected.
When discharging, the vent of full spacing outlet valve (2) and the vent of roll-over valve (3) play the exhaust passage effect to the fuel evaporation gas (HC) that produces in fuel tank (1) to detoxication can (5).Generally speaking, the diameter of full spacing outlet valve (2) vent is greater than the diameter of roll-over valve (3) vent.
Because, when amount of fuel reaches 100%, full spacing outlet valve (2) and horizontal pipe (12) are in closed condition, so, in the refueling process, amount of fuel did not reach before 100%, and the fuel evaporation gas (HC) that produces in fuel tank (1) enters in the detoxication can (5) by the vent of full spacing outlet valve (2) and the vent of roll-over valve (3), then, the induction mnifold of inflow engine (7) burns again.
In addition, fuel oil reaches 100% o'clock fuel evaporation gas (HC) that produces, and can only discharge by the vent of roll-over valve (3).Because the diameter of roll-over valve (3) vent is less, therefore, compares fuel evaporation gas (HC) velocity of discharge, the rate of rise of fuel tank (1) is faster, thus, reaches in amount of fuel under 100% the state, by boosting of fuel tank (1), can effectively prevent the excessive phenomenon of oiling.
Before the air-breathing menifold of the complete inflow engine (7) of the fuel evaporation gas (HC) that in the fuel tank (1) of above-mentioned fuel evaporation gaseous emission control system, produces, leakage phenomenon must not appear, to this, stop valve can detect voluntarily by motor (7) negative pressure.
That is self check process, is that amount of fuel reaches at 15% to 85% o'clock and can realize.During motor (7) running, according to the negative pressure that produce this moment, fuel tank (1) internal pressure can descend.Within a certain period of time, judge fuel tank (1) internal pressure by pressure transducer (4), at this moment, when the internal pressure of fuel tank (1) is reduced to the negative pressure of regulation at the appointed time, to be considered as fuel evaporation gas (HC) and not have leakage, on the contrary, when not dropping to the regulation negative pressure at the appointed time as the fuel tank internal pressure, will be considered as fuel evaporation gas (HC) has leakage.
In the leakage process that detects fuel evaporation gas (HC), detoxication can cut-off valve (11) keeps closed condition.
In addition, whether detect fuel evaporation gas (HC) by self test mode leaks, then, open detoxication can cut-off valve (11), detoxication can is kept being connected with atmosphere, make fuel tank (1) internal pressure of decline quickly recover to normal state, but, amount of fuel reaches at 15% to 85% o'clock, full spacing outlet valve (2) and roll-over valve (3) all are in opening state, fuel tank (1) internal pressure of decline is recovered fast by the vent of full spacing outlet valve (2) vent and roll-over valve (3) and in conjunction with the outside, thereby finished the self check process.
But for the leakage that detects fuel evaporation gas (HC) and prevent excessive oiling, above-mentioned fuel evaporation gaseous emission control system need be installed roll-over valve (3) and full spacing outlet valve (2), therefore, has improved cost and weight.
Summary of the invention
For overcoming the problems referred to above of the prior art, the utility model provides a kind of can detect the leakage of fuel evaporation gas (HC) voluntarily, and prevents to refuel excessive stop valve, thereby helps to save cost and weight reduction.
The technical solution adopted in the utility model is: a kind of stop valve of fuel evaporation gaseous emission control system, by forming: pass the fuel tank outer wall, be fixed on the top of fuel tank, and be positioned at the shell of fuel tank inside with lower member; Be fixed on the inner casing of enclosure; Above inner casing, form, and the main aperture that is connected with outer shell passage; And the sidewall that passes shell and inner casing, diameter is less than the side opening of main aperture.
Compared with prior art, the utlity model has following advantage: as long as a stop valve is installed, can detect the leakage of fuel evaporation gas (HC) voluntarily, the fuel oil adverse current phenomenon in the time of preventing to refuel excessive and automobile upset, thus help to save cost and weight reduction.
Description of drawings
Fig. 1 is the schematic representation of the fuel evaporation gaseous emission control system used in the prior art;
Fig. 2 is the schematic representation of the utility model fuel evaporation gaseous emission control system;
Fig. 3 is the axonometric drawing of the stop valve of the utility model fuel evaporation gaseous emission control system;
Fig. 4 is the sectional view of the stop valve of the utility model fuel evaporation gaseous emission control system.
Among the figure: 1, fuel tank; 2, full spacing outlet valve; 3, roll-over valve; 31, breathing pipe; 4, pressure transducer; 5, detoxication can; 6, breathing pipe; 7, motor; 8, purify control electromagnetic valve; 9, breathing pipe; 10, fuel pipe; 11, detoxication can cut-off valve; 12, horizontal pipe; 13, breathing pipe; 20, stop valve; 21, shell; 21a, flange; 21b, stack shell; 21b-1, center-aisle; 21b-2, bottom surface; 21c, bottom tube; 21c-1, lower channel; 21d, last interface; 21d-1, upper channel; 22, inner casing; 23, main aperture; 24, side opening; 25, jump part; 26, jump the part spring; 27, seal ring.
Embodiment
Below in conjunction with accompanying drawing preferred embodiment of the present utility model is described in detail, thereby more removes clear and definite defining so that advantage of the present utility model and feature are easier to be it will be appreciated by those skilled in the art that protection domain of the present utility model made.
As shown in Figure 2, fuel evaporation gaseous emission control system of the present utility model comprises: the fuel tank 1 that stores fuel oil; Be installed in fuel tank 1 top, play the effect of fuel evaporation gas (HC) discharge route, and have and prevent the excessive stop valve 20 that adds functional oil; Detect the pressure transducer 4 of fuel tank 1 internal pressure; Collect the detoxication can 5 of the fuel evaporation gas (HC) of evaporation in the fuel tank 1; The breathing pipe 31 that connects stop valve 20 and detoxication can 5 inlets; The outlet and motor 7 induction mnifolds that connect detoxication can 5 simultaneously, are equipped with the breathing pipe 9 that purifies control electromagnetic valve 8; Be installed on the detoxication can 5 the detoxication can cut-off valve 11 that is connected simultaneously with fuel pipe 10; And be installed on the fuel tank 1, prevent to refuel excessive horizontal pipe 12.
As shown in Figure 3, Figure 4, stop valve 20 comprises: pass fuel tank 1 outer wall, be fixed on the top of fuel tank 1, and be positioned at the shell 21 of fuel tank inside; Be fixed on the inner casing 22 of shell 21 inside; Above inner casing 22, form, and the main aperture 23 that is connected with shell 21 passages; Pass the sidewall of shell 21 and inner casing 22, and diameter is less than the side opening 24 of main aperture 23; At inner casing 22 inner jumping parts moving up and down (25); Last end in contact is jumped part 25 bottoms, following end in contact shell 21 and the jumping part spring 26 fixed; And be installed in seal ring 27 between shell 21 and fuel tank 1 upper surface.
The above-mentioned shell of mentioning 21 passages are the general name of center-aisle 21b-1 and lower channel 21c-1 and upper channel 21d-1.
When the amount of fuel in the fuel tank 1 reached 95% to 97%, bottom tube 21c bottom just can contact fuel oil.
That is, from bottom tube 21c bottom contact fuel oil, bottom tube 21c will stop up, and when the amount of fuel in the fuel tank reaches 100% degree, bottom tube 21c will stop up fully, thereby can prevent to refuel excessive phenomenon.
In addition, side opening 24 passes the outer wall of shell 21 and inner casing 22, and is connected with jumping part installing space 22a.
Have only one as side opening 24, main aperture 23 sectional areas should be greater than 3 times to 4 times of side opening 24 sectional areas.
Have a plurality ofly as side opening 24, main aperture 23 sectional areas should be greater than 3 times to 4 times of all side opening 24 sectional area summations.
Jump part 25 and be installed in the jumping part installing space 22a, it can move up and down in this space, and during the automobile upset, in order to prevent the fuel oil adverse current, it plays the effect of shutoff main aperture 23.
For this reason, jump the gravity of part 25 greater than the elastic force of jumping part spring 26.
Jump part spring 26 tops and be fixed on the bottom surface of jumping part 25, and the bottom is fixed on the bottom surface 21b-2 of center-aisle 21b-1, will jump part 25 by the elasticity of spring and eject to the main aperture direction.
In addition, seal ring 27 is placed between the top of the bottom of flange 21a and fuel tank 1, plays seal action.
Below introduce the working procedure of the utility model stop valve.
Owing to the jumping parts of installing in inner casing 22 inside of stop valve 20 25 can move up and down at jumping part installing space 22a, therefore, between the outer wall of jumping part installing space 22a inboard and jumping part 25 certain slit is arranged.
In addition, when amount of fuel reached 95% to 97%, stop valve 20 bottom tube 21c bottom surfaces could contact fuel oil.
Therefore, during oiling, amount of fuel does not reach at 95% to 97% o'clock, the fuel evaporation gas (HC) that produces in fuel tank 1 inside is successively through slit, main aperture 23, upper channel 21d-1 between the outer wall of the lower channel 21c-1 of stop valve 20, the inboard of jumping part installing space 22a and jumping part 25, then, enter in the detoxication can, last, the air-breathing menifold that enters motor 7 burns.
Amount of fuel reaches at 95% to 97% o'clock, bottom tube 21c is blocked because of pasta raises, therefore, the fuel evaporation gas (HC) that oil mass produces when reaching 95% to 97%-100% can not flow into lower channel 21c-1, but, then, enter in the detoxication can successively through slit, main aperture 23, upper channel 21d-1 between the outer wall of the side opening 24 of stop valve 20, the inboard of jumping part installing space 22a and jumping part 25, at last, the air-breathing menifold that enters motor 7 burns.
Because the internal diameter of side opening 24 is smaller, so, compare the speed that fuel evaporation gas (HC) is discharged by side opening 24, the speed that fuel tank 1 pressure rises is faster, thus, and when amount of fuel reaches 100% degree, rise by fuel tank 1 pressure inside, can prevent excessive oiling phenomenon.
Before the air-breathing menifold of the complete inflow engine 7 of the fuel evaporation gas (HC) that produces in the fuel tank 1 of above-mentioned fuel evaporation gaseous emission control system, leakage phenomenon must not appear.To this, stop valve can detect voluntarily by motor 7 negative pressure.
That is self check process, is that amount of fuel reaches at 15% to 85% o'clock and can realize.During motor 7 runnings, according to the negative pressure that produce this moment, fuel tank 1 internal pressure will descend.Within a certain period of time, judge fuel tank 1 internal pressure by pressure transducer 4, at this moment, when the internal pressure of fuel tank 1 is reduced to the negative pressure of regulation at the appointed time, to be considered as fuel evaporation gas (HC) and not have leakage, on the contrary, when not dropping to the regulation negative pressure at the appointed time as the fuel tank internal pressure, will be considered as fuel evaporation gas (HC) has leakage.
In the leakage process that detects fuel evaporation gas (HC), detoxication can cut-off valve 11 keeps closed condition.
In addition, detect fuel evaporation gas (HC) by self test mode and whether leak, then, open detoxication can cut-off valve 11, detoxication can is connected with atmosphere, makes fuel tank 1 internal pressure of decline quickly recover to normal state, still, amount of fuel reaches at 15% to 85% o'clock, bottom tube 21c and side opening 24 all are in opening-wide state, so air passes through upper channel 21d-1, main aperture 23, bottom tube 21c and side opening 24 successively from the outside, enter fuel tank inside rapidly, thereby finish the self check process.
In addition, when automobile overturns, jump the elastic force of part 25 by self gravitation and jumping part spring 26, straight line moves about jumping the part installing space, and shutoff main aperture 23, thereby prevents fuel oil adverse current phenomenon by stop valve 20.
Therefore, as long as a stop valve 20 is installed, can detect the leakage of fuel evaporation gas (HC) voluntarily, the fuel oil adverse current phenomenon when preventing to refuel excessive and automobile upset, compare the structure of full spacing outlet valve 2 of former use and roll-over valve 3, help to save cost and weight reduction.
More than specific embodiment of the present utility model is illustrated; but protection content of the present utility model is not only limited to above embodiment; in the technical field, the common knowledge of a GPRS just can be carried out diversified change in its technology main idea scope under of the present utility model.
Claims (11)
1. the stop valve of a fuel evaporation gaseous emission control system is characterized in that: comprise and pass fuel tank (1) outer wall, be fixed on the top of described fuel tank (1), and be positioned at the inner shell (21) of described fuel tank (1); Be fixed on the inner inner casing (22) of described shell (21); Form in described inner casing (22) top, and the main aperture (23) that is connected with described shell 21 passages; Pass the sidewall of described shell (21) and inner casing (22), and diameter is less than the side opening (24) of described main aperture (23).
2. the stop valve of fuel evaporation gaseous emission control system according to claim 1 is characterized in that: described shell (21) comprises flange (21a), stack shell (21b), bottom tube (21c), goes up interface (21d); The described flange (21a) that is used to seal is close to described fuel tank (1) top; Described stack shell (21b) is extended downwards and is formed by described flange (21a), and is provided with center-aisle (21b-1), and described inner casing (22) is inserted in described stack shell (21b) inside; Described bottom tube (21c) is extended downwards and is formed by described stack shell (21), and it connects described center-aisle (21b-1) and fuel tank (1), and is provided with a lower channel (21c-1); The described interface (21d) of going up is positioned at described flange (21a) top, one end of breathing pipe (31) is connected with the described interface (21d) of going up, the other end is connected with detoxication can (5), upper channel (21d-1) is positioned at the described interface (21d) of going up to be located, and it connects described center-aisle (21b-1) and breathing pipe (31) passage.
3. the stop valve of fuel evaporation gaseous emission control system according to claim 2 is characterized in that: when the amount of fuel in the described fuel tank (1) reaches 95% to 97%, and described bottom tube (21c) bottom contact fuel oil.
4. the stop valve of fuel evaporation gaseous emission control system according to claim 2 is characterized in that: described inner casing (22) is installed in the center-aisle (21b-1) of described stack shell (21b); Be provided with jumping part installing space (22a) in described inner casing (22) inside; Be provided with Gobi desert (22b) in the top of described jumping part installing space (22a); In described Gobi desert (22b), be provided with the main aperture (23) that connects described jumping part installing space (22a) and upper channel (21d-1).
5. the stop valve of fuel evaporation gaseous emission control system according to claim 4 is characterized in that: described side opening (24) passes the sidewall of described shell (21) and inner casing (22), and is connected with described jumping part installing space (22a).
6. the stop valve of fuel evaporation gaseous emission control system according to claim 1 is characterized in that: described main aperture (23) and side opening (24) respectively have one.
7. the stop valve of fuel evaporation gaseous emission control system according to claim 1 is characterized in that: described main aperture (23) has one, and described side opening (24) has a plurality of.
8. the stop valve of fuel evaporation gaseous emission control system according to claim 6 is characterized in that: described main aperture (23) sectional area is greater than 3 times to 4 times of described side opening (24) sectional area.
9. the stop valve of fuel evaporation gaseous emission control system according to claim 7 is characterized in that: described main aperture (23) sectional area is greater than 3 times to 4 times of all side openings (24) sectional area summation.
10. the stop valve of fuel evaporation gaseous emission control system according to claim 4 is characterized in that: it also comprises jumps part (25), jumping part spring (26), seal ring (27), and the characteristics of each assembly are as follows:
Described jumping part (25) can be installed in the described jumping part installing space (22a) up or down, when automobile overturns, and described jumping part (25) shutoff main aperture (23); Described jumping part spring (26) upper end is fixed on described jumping part (25) bottom surface, and the lower end is fixed on the bottom surface (21b-2) of described center-aisle (21b-1), and jumping part (25) ejects to described main aperture (23) direction by the elasticity of spring;
Described seal ring (27) is positioned between the top of the bottom of flange (21a) and fuel tank (1).
11. the stop valve of fuel evaporation gaseous emission control system according to claim 10 is characterized in that: the gravity of described jumping part (25) is greater than the elastic force of described jumping part spring (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206535407U CN201943848U (en) | 2010-12-10 | 2010-12-10 | Shutoff valve of control system for exhausting fuel oil evaporated gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206535407U CN201943848U (en) | 2010-12-10 | 2010-12-10 | Shutoff valve of control system for exhausting fuel oil evaporated gas |
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| Publication Number | Publication Date |
|---|---|
| CN201943848U true CN201943848U (en) | 2011-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206535407U Expired - Lifetime CN201943848U (en) | 2010-12-10 | 2010-12-10 | Shutoff valve of control system for exhausting fuel oil evaporated gas |
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| CN (1) | CN201943848U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102011659A (en) * | 2010-12-10 | 2011-04-13 | 东熙产业股份（有限）公司 | Stop valve for fuel evaporation gas emission control system |
-
2010
- 2010-12-10 CN CN2010206535407U patent/CN201943848U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102011659A (en) * | 2010-12-10 | 2011-04-13 | 东熙产业股份（有限）公司 | Stop valve for fuel evaporation gas emission control system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110824 |
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| CX01 | Expiry of patent term |