CN2392922Y - Gas-pressure conversion apparatus for automobile - Google Patents
Gas-pressure conversion apparatus for automobile Download PDFInfo
- Publication number
- CN2392922Y CN2392922Y CN 98233009 CN98233009U CN2392922Y CN 2392922 Y CN2392922 Y CN 2392922Y CN 98233009 CN98233009 CN 98233009 CN 98233009 U CN98233009 U CN 98233009U CN 2392922 Y CN2392922 Y CN 2392922Y
- Authority
- CN
- China
- Prior art keywords
- air supply
- valve
- supply channel
- passage
- low pressure
- 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 - Fee Related
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Abstract
The utility model relates to a gas pressure conversion apparatus for an automobile. The utility model is characterized in that a casing body is provided with a high pressure air intake passage, a low pressure air outlet passage and an air supply passage between reducing valves, which are communicated with each other; a first reducing valves is arranged between the high pressure air intake passage and the air supply passage, a secondary reducing valves is arranged between the air supply passage and the low pressure air outlet passage, and the low pressure air outlet passage is composed of an idle speed air supply passage and an operation air supply passage which are connected in parallel; a jet exhauster is arranged in the idle speed air supply passage, a valve is arranged in the operation gas supply passage, and a power feedback valve is arranged on the port of the low pressure air outlet passage. The utility model has the advantages of wide flow range of air supply, high stability, high sensitivity and fast operation response speed.
Description
The utility model relates to a kind of pressure conversion device, specifically, relates to the automobile pressure conversion device that a kind of compressed natural gas or liquefied petroleum gas act as a fuel.
At present, compressed natural gas or liquefied petroleum gas (LPG) are supplied with automobile make fuel, must be converted to and be suitable for the enter the mouth combustion gas of required pressure of motor car engine being in combustion gas high pressure conditions under, therefore essential one overlaps the gaseous-pressure conversion equipment.In the prior art, when this gaseous-pressure conversion equipment is given the motor air feed, its idling air feed state and the shared passage of work air feed state, motor rely on the valve core of reduction valve and the gap between the valve seat to regulate gas flow when the idling work state.Thereby just cause the shortcoming of several respects: 1. when need were regulated idling flow and work gas flow, it influenced each other, and causes engine stabilization poor, and sensitivity is low.2. gas supply flow narrow range, suitable motor car engine type is less.When 3. motor needed big load operation, the speed of response of gas flow supply was slow.4. compressed natural gas and liquefied petroleum gas (LPG) can not shared cover pressure conversion devices
The purpose of this utility model provides a kind of gas supply flow wide ranges, and good stability is highly sensitive, the fast automobile fuel gas pressure conversion device of work speed of response.
In order to achieve the above object.Technical solutions of the utility model are:
A kind of automobile fuel gas pressure conversion device comprises: housing 2, and one-level reduction valve K1, second depressurized valve K2, described housing 2 have high pressure admission passage and the low pressure outlet passageway that is interconnected, and the air supply channel between the reduction valve; Be provided with one-level reduction valve K1 between described high pressure admission passage and the air supply channel; Be provided with second depressurized valve K2 between described air supply channel and the low pressure outlet passageway; Its special way is: described low pressure outlet passageway is made of with the work air supply channel the idling air supply channel of parallel connection; Be provided with ejector 9d in the described idling air supply channel, the flexible sheet of ejector 9d is between idling air supply channel and atmospheric pressure chamber; Described idling air supply channel is provided with solenoid valve 10 and idling flow adjustment screw 11; Be provided with valve K3 in the described work air supply channel, its spool 8b is located at ejector lever 9c one end, and the other end of lever 9c connects with diaphragm 9b; Be provided with power feedback valve 13 at described low pressure outlet passageway mouth.
Be provided with hot water heating passage W1 in the valve seat of one-level reduction valve K1 described in the technique scheme: the high pressure admission passage of described one-level reduction valve K1 is provided with pressure transducer 14, and its low pressure air supply channel is provided with safety valve 6.
The low pressure air supply opening place of the idling air supply channel of the parallel connection described in the technique scheme and work air supply channel is provided with air pressure balance valve 12.
Be provided with the multiple tracks filter screen in the various passages in the housing 2 described in the technique scheme, this filter screen comprises filter 15b and the interior filter 15c of second depressurized passage c3 in filter 15a, the one-level relief passage C2 that is located in the high pressure admission channel C 1.
Accompanying drawing is a structural representation of the present utility model.
Drawing reference numeral is described as follows: 1-electronic equipment 2-housing 3a, 3b, 3c-transmission line K1-one-level reduction valve
4a-valve seat 4b-valve core 4c, 4d-spring 4e-diaphragm 5-screw K2-second depressurized valve
Three grades of reduction valve of 7a-valve seat 7b-valve core 7c-lever 7d-diaphragm 7e-volute spring K3-
8a-valve seat 8b-valve core 8c-spring 9d-ejector 9a, 9b-diaphragm 9c-ejector lever 6-safety valve 10-solenoid valve 11-idling flow adjustment screw 12-equilibrated valve 13-power feedback valve 14-pressure transducer 15a, 15b, 15c-filter W1-one-level reduction valve hot water heating passage W2-second depressurized valve hot water heating passage
Below in conjunction with drawings and Examples the utility model is further described:
As shown in the figure, the utility model is mainly by reduction valve, housing and the various passages that constitute between them, automobile fuel gas pressure conversion device that chamber is formed.When the automobile of fuel oil need be used high-pressure natural gas instead and acts as a fuel, fuel selection switch is beaten to the combustion gas sign, at this moment, with in its pressure parameter input electronic equipment 1, indication can show the residual capacity of combustion gas to pressure transducer 14 according to pressure parameter by transmission line 3a; If the combustion gas abundance is then cut off oil circuit,, open the idling air supply channel, and pass through the size of screw 11 can regulate idling flows by the transmission line 3b startup solenoid valve 10 of electronic equipment 1.High-pressure natural gas enters one-level reduction valve K1 from C1 passage and filter 15a, by adjusting screw 5 pressure spring 4c, 4d and diaphragm 4e, control spool 4b and valve seat 4a at high-pressure gas through out-of-date gap, make gas after adiabatic expansion decompression, enter one-level relief passage C2.In order to prevent condensation after the pressurized gas adiabatic expansion, on the valve seat 4a of one-level reduction valve K1, be provided with hot water heat tunnel W1, thereby can guarantee that air-flow is unobstructed.Also be provided with safety valve 6 on the high pressure admission passage of one-level reduction valve K1, be used to protect pressure conversion device.Still the combustion gas for gaseous state enters second depressurized valve K2 through filter 15b, overcome the volute spring 7e of reduction valve K2, the resistance of diaphragm 7d, open spool 7h on the valve seat 7a by lever 7c, make gas carry out the decompression of secondary adiabatic expansion, be similarly and prevent condensation of gas, be provided with heat tunnel W2 at second depressurized valve K2 place, make the fuel of gaseous state enter second depressurized channel C 3, i.e. the low pressure outlet passageway.The low pressure outlet passageway is made of the idling air supply channel and the work air supply channel of parallel connection.Valve K3 in the work air supply channel of this moment closes.Combustion gas enters the idling air supply channel through filter 15C and opened solenoid valve 10, is provided with ejector 9d in the idling air supply channel, thereby is formed on ejector inner chamber and exocoel in the idling passage, and ejector 9d can adopt nozzle or Venturi tube.A part of combustion gas this moment enters cavity C 6 through nozzle or Venturi tube, and another part combustion gas enters ejector lateral compartments C5 through idling flow adjustment screw 11, because of C5 communicates with the C6 chamber, when combustion gas finally enters C6.And also communicate this moment with C5, C6 by covering the diaphragm 9a that plays on-off action on the E hole by the cavity C 7 that ejector diaphragm 9a and 9b form.The two-way flow enters cavity C 8 through equilibrium valve 12, and because of the pressure height of the pressure ratio cavity C 6 of cavity C 8, so the refluence that equilibrium valve 12 can prevent combustion gas is set, combustion gas forms stable idling work flow through power feedback valve 13 supply engines.
When the power of motor strengthened, engine speed improved, and the combustion gas requirement increases, thereby formed suction in the idling passage, and the pressure in the idling passage is descended.And C5, C6, C7 three cavity pressures descend, and the side of two diaphragm 9a, the 9b of ejector 9d is the C7 chamber, atmospheric pressure chamber C9, the C10 chamber of opposite side for communicating with ambient atmosphere.Diaphragm 9a blocks C7 chamber through hole E under atmospheric effect.C7 chamber and C5, C6 two chambeies are isolated fully.And the C7 cavity pressure is further descended, when the C7 cavity pressure was lower than barometric pressure, diaphragm 9b was to the lever 9C one end application of force.Because of the other end of lever connects with the spool 8b of valve K3, after overcoming the resistance of spring 8C under the effect of lever 9C, open the K3 valve port, thereby opened the work air supply channel, make combustion gas enter the C8 chamber, lead to motor through power feedback valve 13 again, to satisfy the needs of big flow.Because of the aperture of K3 valve port is controlled by the application of force size of the other end of lever 9C, and its application of force size determines the vacuum valve of C7 chamber finally to be determined by the pressure of low pressure air supply outlet by the degree of vacuum of C7 chamber.So the aperture of K3 valve port changes with the outlet pressure size, has guaranteed the gas flow under the engine working conditions.
Behind sensor input electronic equipment 1, start power feedback valve 13 at the tach signal of motor or the degree of vacuum signal in the gas circuit, change the circulation area of low pressure air supply channel by circuit 3C.Strengthen fast the total discharge of combustion gas, the fuel compensation when realizing high-power output.
The utility model is not only applicable to high-pressure natural gas, and after removing one-level reduction valve K1, through adjusting the relevant parameter of K2, K3, can be suitable for doing with liquefied petroleum gas (LPG) the motor of fuel yet.
The utility model has following advantage with existing comparing:
1, the utility model is provided with idling fuel feed passage and two passages of work fuel air supply channel, makes During engine operation, can automatically be started by idling mode is duty, simultaneously air feed. Avoided sharing During same fuel channel, its impact each other, thereby good stability, sensitivity height.
2, the utility model is provided with the power feedback valve in the low pressure outlet passageway, makes the engine high power work The time, realize fuel compensation, thereby the fast response time of the flow of combustion gas supply.
3, air feed wide ranges of the present utility model, suitable automobile engine type is more.
4, the utility model can select two kinds in gas fuel and liquid oil gas different after doing simple the change Fuel.
Claims (4)
1, a kind of automobile fuel gas pressure conversion device comprises: housing (2), and one-level reduction valve K1, second depressurized valve K2, described housing (2) have high pressure admission passage and the low pressure outlet passageway that is interconnected, and the air supply channel between the reduction valve; Be provided with one-level reduction valve K1 between described high pressure admission passage and the air supply channel; Be provided with second depressurized valve K2 between described air supply channel and the low pressure outlet passageway; It is characterized in that: described low pressure outlet passageway is made of with the work air supply channel the idling air supply channel of parallel connection; Be provided with ejector (9d) in the described idling air supply channel, the flexible sheet of ejector (9d) is between idling air supply channel and atmospheric pressure chamber; Described idling air supply channel is provided with solenoid valve (10) and idling flow adjustment screw (11); Be provided with valve K3 in the described work air supply channel, its spool (8b) is located at ejector lever (9c) end, and the other end of lever (9c) connects with diaphragm (9b); Be provided with power feedback valve (13) at described low pressure outlet passageway mouth.
2, automobile fuel gas pressure conversion device according to claim 1 is characterized in that: be provided with hot water heating passage W1 in the valve seat of described one-level reduction valve K1; The high pressure admission passage of described one-level reduction valve K1 is provided with pressure transducer (14), and its low pressure air supply channel is provided with safety valve (6).
3, automobile fuel gas pressure conversion device according to claim 1 and 2 is characterized in that: be provided with air pressure balance valve (12) at the idling air supply channel of described parallel connection and the low pressure air supply opening place of work air supply channel.
4, automobile fuel gas pressure conversion device according to claim 3, it is characterized in that: be provided with the multiple tracks filter screen in the various passages in the described housing (2), this filter screen comprises filter 15b and the interior filter 15c of second depressurized passage c3 in filter 15a, the one-level relief passage C2 that is located in the high pressure admission channel C 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98233009 CN2392922Y (en) | 1998-09-11 | 1998-09-11 | Gas-pressure conversion apparatus for automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98233009 CN2392922Y (en) | 1998-09-11 | 1998-09-11 | Gas-pressure conversion apparatus for automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2392922Y true CN2392922Y (en) | 2000-08-23 |
Family
ID=33981830
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98233009 Expired - Fee Related CN2392922Y (en) | 1998-09-11 | 1998-09-11 | Gas-pressure conversion apparatus for automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2392922Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103485936A (en) * | 2013-10-18 | 2014-01-01 | 贵州大学 | Gas supplying device of gas vehicle engine |
-
1998
- 1998-09-11 CN CN 98233009 patent/CN2392922Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103485936A (en) * | 2013-10-18 | 2014-01-01 | 贵州大学 | Gas supplying device of gas vehicle engine |
| CN103485936B (en) * | 2013-10-18 | 2015-07-22 | 贵州大学 | Gas supplying device of gas vehicle engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: PATENTEE; FROM: NO.11 INST., CHINESE SPACE INDUSTRY GENERAL CO. TO: XI AN TIANJIE AVIATIONTECHNOLOGY CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 710061 Xi'an City Road No. 1 Jia Cuihua Patentee after: Xi'an Tian Jie spaceflight Polytron Technologies Inc Address before: 067 base courtyard, Yuhang street, Shaanxi County, Changan Province Patentee before: No.11 Inst., China Astronautics Industrial Corp. |
|
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |