CN201386601Y - Check valve for controlling fuel evaporation of internal combustion engine - Google Patents
Check valve for controlling fuel evaporation of internal combustion engine Download PDFInfo
- Publication number
- CN201386601Y CN201386601Y CN200920070159U CN200920070159U CN201386601Y CN 201386601 Y CN201386601 Y CN 201386601Y CN 200920070159 U CN200920070159 U CN 200920070159U CN 200920070159 U CN200920070159 U CN 200920070159U CN 201386601 Y CN201386601 Y CN 201386601Y
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- CN
- China
- Prior art keywords
- valve
- bonnet
- spool
- valve body
- seal ring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
A check valve for controlling the fuel evaporation of an internal combustion engine comprises a valve body, a valve bonnet, a valve core, a reset spring and a seal ring, wherein an inner wall ring of the valve body is provided with a step surface; the valve bonnet is provided with a ring-shaped bottom wall; one end of the valve body is provided with an air inlet, and one end of the valve bonnet is provided with an air outlet; the other end of the valve body and the other end of the valve bonnet are connected with each other in a sealing way; the inner walls of the valve body and the valve bonnet limit a valve cavity together; the valve core is arranged in the valve cavity and comprises a valve core body and a step circularly arranged on the valve core body; the step is provided with a first step surface opposite to the air inlet and a second step surface opposite to the air outlet; the reset spring is arranged between the second step surface and the ring-shaped bottom wall of the valve bonnet; the seal ring is sheathed on the valve core body; and one surface of the seal ring is contacted with the first step surface, and the other surface thereof is contacted with the step surface of the valve body. The check valve utilizes the pressure difference between the air inlet and the air outlet to start and close the check valve, thus being capable of controlling the discharge volume of the fuel evaporation gas, and optimizing the performance of an engine.
Description
Technical field
The utility model relates to control valve, relates in particular to a kind of one-way valve that is used for the fuel vaporization control of internal-combustion engine.
Background technique
The Fuel Control System of internal-combustion engine mainly comprises fuel tank 100, air-breathing jars 200 and the throttling chamber 300 at sucking pipe middle part that is arranged on the cylinder block of internal-combustion engine, in throttling chamber 300 throttle is installed.Fuel tank 100 links to each other by pipeline 410 with air-breathing jar 200, is provided with absorbent material in air-breathing jar 200, in order to absorb from the fuel gas of fuel tank 100 evaporations.Throttling chamber 300 links to each other with air-breathing jar 200 by outlet pipe 420.The shortcoming of this Fuel Control System is that difficult control when the fuel gas concentration in throttling chamber 300 is too high, can cause engine running unusual from air-breathing jar 200 fuel gas that flows to throttling chamber 300, even flame-out.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of one-way valve of controlling combustion engine fuel vaporization, and this one-way valve can be controlled the discharge capacity of fuel vaporization gas according to engine load.
The technological scheme that the utility model adopted is: a kind of one-way valve of controlling combustion engine fuel vaporization comprises valve body, bonnet, spool, Returnning spring and seal ring; This valve body and bonnet are hollow structure, and the inwall of valve body is equipped with a ladder surface, and bonnet is provided with an annular bottom wall, one end of valve body is provided with suction port, one end of bonnet is provided with the air outlet, and the other end of valve body and the other end of bonnet are tightly connected, the common valve pocket that limits of the inwall of valve body and bonnet; Spool is arranged in this valve pocket, comprises the spool body and is located on step on the spool body, and step has first step face relative with suction port and the second step face relative with the air outlet; Returnning spring is arranged between the annular bottom wall of second step face and bonnet, and spool is produced reposition force; Seal ring is set on the spool body; The one side of sealing circle contacts with the first step face, and another side contacts with the ladder surface of valve body.
Above-mentioned one-way valve, wherein, seal ring is provided with first lug boss in the edge ring with the contacted one side of first step face, and the top of this first lug boss contacts with this first step face; Seal ring is provided with second lug boss in the edge ring with the contacted one side of ladder surface, and the top of this second lug boss contacts with this ladder surface.
Above-mentioned one-way valve, wherein, position relative with the spool body on the annular bottom wall of bonnet convexes with a block.
The utility model utilizes Returnning spring to offer the reposition force of spool and seal ring, realized coming this one-way valve of opening and closing according to the pressure difference between suction port and the air outlet, thereby the discharge capacity of may command fuel vaporization gas has been optimized the performance of motor.In addition, the utility model is provided with lug boss in the edge ring of two opposing sides of seal ring respectively, utilizes this lug boss to play the effect of sealing, and this structure can improve sealability.
Description of drawings
Fig. 1 is the schematic representation of the Fuel Control System of existing internal-combustion engine;
Fig. 2 is the schematic appearance of one-way valve of the present utility model;
Fig. 3 is the internal structure schematic representation of one-way valve of the present utility model;
Fig. 4 A is the X-X line sectional view of Fig. 3;
Fig. 4 B is the Y-Y line sectional view of Fig. 3;
Fig. 4 C is the Z-Z line sectional view of Fig. 3;
Fig. 5 is the local enlarged diagram of Fig. 4;
Fig. 6 is the local enlarged diagram of the P part of Fig. 4;
Fig. 7 is the schematic representation that one-way valve of the present utility model is applied to the Fuel Control System of internal-combustion engine.
Embodiment
Below in conjunction with accompanying drawing the utility model is made and to be further specified.
Referring to figs. 2 to Fig. 6, one-way valve 600 of the present utility model comprises valve body 1, bonnet 2, spool 3, Returnning spring 4 and seal ring 5.
The excircle of step 32 is first-class to be interval with a plurality of double wedges 323, the inwall Spielpassung of the tooth top of these double wedges 323 and valve body 1, form equal-sized gap 328 between adjacent per two double wedges 323, this structure can flow fuel vaporization gas well.Spacer ring is provided with the convex tendon 12 that a plurality of cross sections are circular arc on the inwall of valve body 1, and the top of convex tendon 12 contacts with the peripheral outer wall of spool body 31, is used for leading when spool body 31 moves axially.Because the peripheral outer wall of the top of convex tendon 12 and spool body 31, can suppress the moving resistance of spool effectively for point contacts, rub and the inclination of spool partially, thereby helps to obtain excellent sealing performance.
Fig. 7 shows the schematic representation that one-way valve of the present utility model is applied to the Fuel Control System of internal-combustion engine.As shown in the figure, one-way valve 600 is arranged on the outlet pipe 420 that connects throttling chamber 300 and air-breathing jar 200.From the fuel vaporization gas that fuel tank 100 produces, supply with air-breathing jar 200 through pipeline 410, and by the air-breathing jar 200 built-in temporary transient inhale jar 200 of absorbent material.Be installed in the folding degree of the throttle in the throttling chamber 300 by basis, the negative pressure that pc port in the throttling chamber generates, switching is arranged on the one-way valve on the outlet pipe 420, thereby control is supplied to the flow of the fuel vaporization gas in throttling chamber 300 from air-breathing jar 200 through outlet pipe 420.When the throttling chamber pc port place when producing negative pressure because the gas pressure of suction port 11 sides of one-way valve is greater than the gas pressure of air outlet 21 sides, under the effect of draught head, spool 3 is to air outlet 21 side shiftings, Returnning spring 22 is compressed.Because seal ring 5 is to be sheathed on the spool body 31, when spool 3 moves, seal ring 5 also moves with spool 3, seal ring 5 original and ladder surface 10 contacted second lug bosses 52, and produce the space between this ladder surface 10, the gas that flows into from suction port 11 by the gap 328 on this space, the step 32 after, flow into air outlet 21.Owing on the annular bottom wall 20 of bonnet 2, be provided with block 22, what make spool 3 mobilely is subjected to certain restriction, thereby can control the flow of fuel vaporization gas, and make the boil-off gas that flows into air outlet 21 obtain shunting uniformly, improve the mobile performance of boil-off gas.When the suction port 11 of one-way valve and the pressure difference between the air outlet 21 are reduced to design level, Returnning spring 4 drives spool 3 and resets, spool 3 and seal ring 5 are to suction port 11 side shiftings, and second lug boss 52 of seal ring 5 contacts with ladder surface 10, makes one-way valve get back to sealing state.
Claims (6)
1. the one-way valve of a controlling combustion engine fuel vaporization is characterized in that, comprises valve body, bonnet, spool, Returnning spring and seal ring;
Described valve body and described bonnet are hollow structure, the inwall of valve body is equipped with a ladder surface, bonnet is provided with an annular bottom wall, one end of valve body is provided with suction port, one end of bonnet is provided with the air outlet, the other end of valve body and the other end of bonnet are tightly connected, the common valve pocket that limits of the inwall of valve body and bonnet;
Described spool is arranged in the described valve pocket, comprises the spool body and is located on step on the spool body, and described step has first step face relative with described suction port and the second step face relative with described air outlet;
Described Returnning spring is arranged between the annular bottom wall of described second step face and bonnet, and described spool is produced reposition force;
Described seal ring is set on the spool body; The one side of sealing circle contacts with described first step face, and another side contacts with the described ladder surface of valve body.
2. one-way valve as claimed in claim 1 is characterized in that, described seal ring is provided with first lug boss in the edge ring with the contacted one side of described first step face, and the top of described first lug boss contacts with this first step face; Described seal ring is provided with second lug boss in the edge ring with the contacted one side of described ladder surface, and the top of described second lug boss contacts with this ladder surface.
3. one-way valve as claimed in claim 1 is characterized in that, position relative with described spool body on the annular bottom wall of described bonnet convexes with a block.
4. one-way valve as claimed in claim 3 is characterized in that, an end of described Returnning spring is set on the described block, and the other end is set on the described spool body.
5. one-way valve as claimed in claim 1 is characterized in that, first-class a plurality of double wedges, the inwall Spielpassung of the tooth top of described double wedge and described valve body of being interval with of the excircle of the step of described spool.
6. one-way valve as claimed in claim 1 is characterized in that, spacer ring is provided with the convex tendon that a plurality of cross sections are circular arc on the inwall of described valve body, and the top of described convex tendon contacts with the peripheral outer wall of described spool body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920070159U CN201386601Y (en) | 2009-04-09 | 2009-04-09 | Check valve for controlling fuel evaporation of internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920070159U CN201386601Y (en) | 2009-04-09 | 2009-04-09 | Check valve for controlling fuel evaporation of internal combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201386601Y true CN201386601Y (en) | 2010-01-20 |
Family
ID=41579135
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920070159U Expired - Lifetime CN201386601Y (en) | 2009-04-09 | 2009-04-09 | Check valve for controlling fuel evaporation of internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201386601Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101975293A (en) * | 2010-11-04 | 2011-02-16 | 天津百利展发集团有限公司 | Micro-pressure check valve |
| CN102616227A (en) * | 2012-04-17 | 2012-08-01 | 安徽江淮汽车股份有限公司 | One-way valve for automobile vacuum-assisted hydraulic brake system |
| CN107940042A (en) * | 2017-11-24 | 2018-04-20 | 广东万家乐燃气具有限公司 | A kind of anti-clogging check valve and central hot-water system |
| CN108150661A (en) * | 2018-01-22 | 2018-06-12 | 珠海格力电器股份有限公司 | A kind of valve |
-
2009
- 2009-04-09 CN CN200920070159U patent/CN201386601Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101975293A (en) * | 2010-11-04 | 2011-02-16 | 天津百利展发集团有限公司 | Micro-pressure check valve |
| CN101975293B (en) * | 2010-11-04 | 2013-01-09 | 天津百利展发集团有限公司 | Micro-pressure check valve |
| CN102616227A (en) * | 2012-04-17 | 2012-08-01 | 安徽江淮汽车股份有限公司 | One-way valve for automobile vacuum-assisted hydraulic brake system |
| CN107940042A (en) * | 2017-11-24 | 2018-04-20 | 广东万家乐燃气具有限公司 | A kind of anti-clogging check valve and central hot-water system |
| CN107940042B (en) * | 2017-11-24 | 2024-04-05 | 广东万家乐燃气具有限公司 | Anti-blocking one-way valve and central hot water system |
| CN108150661A (en) * | 2018-01-22 | 2018-06-12 | 珠海格力电器股份有限公司 | A kind of valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170207 Address after: 201612 Shanghai city Songjiang District Xinzhuan Highway No. 258 Building No. 44 room 303-308 Patentee after: Shanghai Philip electronics research and Development Co., Ltd. Address before: 201613 Songjiang District, East Wing Lok Road, Shanghai, No. 8 Patentee before: Shanghai Toyo Denso Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100120 |