CN2735021Y - Compressed natural gas electric control flow regulation decompressor - Google Patents
Compressed natural gas electric control flow regulation decompressor Download PDFInfo
- Publication number
- CN2735021Y CN2735021Y CN 200420034773 CN200420034773U CN2735021Y CN 2735021 Y CN2735021 Y CN 2735021Y CN 200420034773 CN200420034773 CN 200420034773 CN 200420034773 U CN200420034773 U CN 200420034773U CN 2735021 Y CN2735021 Y CN 2735021Y
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- Prior art keywords
- compressed natural
- decompressor
- natural gas
- flow regulation
- engine
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Abstract
The utility model relates to a compressed natural gas electric control flow regulation decompressor, which is used for the compressed natural flow regulation decompression of a dual-fuel engine. The compressed natural gas electric control flow regulation decompressor is mainly composed of a multi-step pressure reduction cavity, an input hole, an output hole, etc. The utility model adopts more than one equipressure cavity electromagnetic dynamic flow regulating control valve to form a last stage decompression mechanism. After adopting the structure of the utility model, no matter whether the vacuum degree of the engine inlet manifold is high or low, according to the set engine operating condition and the travel range of the throttle pedal plate of the driver, the sizes of the gas consumption can be controlled by the signal of the accelerator open degree sensor, so that the gas delivery for the engine under the operating conditions of low speed and big torque is satisfied. The vehicle has rapid and smooth starting, and the control precision of the gas consumption is high.
Description
[technical field]
The utility model belongs to gas-liquid dual-fuel automobile engine accessory manufacturing field of equipment.
[background technique]
When compressed natural gas was full of container, general pressure was between 2-20Mpa, so all need be decompressed to normal pressure the time, can be for engine operation usefulness.Existing C NG (compressed natural gas) pressure reducing regulator is owing to all adopt the spring diaphragm chip to reduce pressure step by step on its structure, be subjected to automobile-used installation volume and space to occupy the restriction of position, so post-decompression gas discharge is regulated, be mechanical type, passively regulate the size that gas discharge is supplied with in negative pressure of vacuum that engine intake manifold produced.The negative pressure of vacuum height, flow is supplied with many, and negative pressure of vacuum is low, and flow is supplied with few.When vehicle normally travels continuously, still can satisfy the engine gas flow supplies with, but when the disconnected speed of vehicle is travelled or is suddenly quickened (urban transit bus Red Light, Stop), because engine speed is low, the air-distributor vacuum negative pressure is low, no matter the driver steps on gas pedal to much, and the structural principle of pressure reducing regulator has determined flow to supply with the demand that can not satisfy engine low rotation speed high pulling torque this moment, thus cause vehicle launch slowly, the difficulty of travelling.Gas flow control is coarse fuzzy, even causes engine misses and restart, and has reduced the usability of vehicle.
[the utility model content]
In view of the defective that existing CNG pressure reducing regulator exists, the purpose of this utility model is the automatically controlled adjusting flow of a kind of compressed natural gas of a design decompressor, makes it to overcome the above shortcoming of prior art.
The purpose of this utility model is to realize by following means.
The compressed natural gas that is used for duel fuel engine is regulated the automatically controlled adjusting flow of the compressed natural gas decompressor of flow decompression, mainly form, adopt more than one equivalent pressure cavity Electromagnetic Dynamic flow regulating and controlling valve to constitute the tail level mechanism of decompressor by multi-step pressure reduction cavity and input and output hole etc.
Adopt the utility model structure, adopt a plurality of equivalent pressure cavity Electromagnetic Dynamic flow regulating and controlling valves, with equivalent pressure cavity alternative membrane run-out level pressure reduction stage, pressure reduction stage before directly importing: and with decompressor assembly Assembly one, spray combustion gas and advance cylinder and overcome the defective that above-mentioned prior art exists thereby adopt microcomputor program to set the in good time operating mode of motor, malleation.Engine intake manifold degree of vacuum height no matter, gas flow all can be by engine operating condition and the driver's accelerator pedal stroke set, size by the SC sigmal control flow of accelerator open degree sensor, to have satisfied the fuel gas supply of motor under the low rotation speed large torque operating mode, vehicle start quick and stable, gas flow control accuracy height.
[description of drawings]
Description of drawings is as follows.
Fig. 1 is the partial sectional view of the utility model decompressor.
[embodiment]
Below in conjunction with accompanying drawing structure of the present utility model is described in further detail.
As shown in Figure 1, the compressed natural gas that is used for duel fuel engine is regulated the automatically controlled adjusting flow of the compressed natural gas decompressor of flow decompression, and 1 is the multi-step pressure reduction cavity, and 2 is delivery outlet, adopt more than one equivalent pressure cavity Electromagnetic Dynamic flow regulating and controlling valve (as among the figure 3,4) to constitute the tail level mechanism of decompressor.
Its working principle is: with three grades of decompressions is example, high-pressure gas is by one-level relief chamber 5, second depressurized chamber 6 enters equivalent pressure cavity Electromagnetic Dynamic flow regulating and controlling valve (3 by input hole after reducing to 0.2-0.6Mpa, 4), behind valve opening, fuel gas injection is to delivery outlet 2, delivery outlet and engine intake manifold inner chamber 7 are ganged up and are linked together, the combustion gas of ejecting has the 0.03---0.1Mpa malleation, and the flow size is controlled by equivalent pressure cavity Electromagnetic Dynamic flow regulating and controlling valve, no matter its degree of vacuum of engine intake manifold just changes, gas flow all can be by the engine operating condition of setting, according to driver's accelerator pedal stroke, size by the SC sigmal control flow of accelerator open degree sensor, thereby satisfied the fuel gas supply flow of motor under the low rotation speed large torque operating mode, the vehicle start quick and stable, gas flow control accuracy height has improved the usability of vehicle, overcome the defective that prior art exists.
When reality was implemented, number is set can determines according to the design of valve flow and the air feed demand of motor of equivalent pressure cavity Electromagnetic Dynamic flow regulating and controlling valve generally was installed on the decompression cavity loam cake 8 to well with erect-type symmetry.
Claims (2)
1, the automatically controlled adjusting flow of compressed natural gas decompressor is made of multi-step pressure reduction cavity and the input and output hole that is arranged on the cavity, it is characterized in that, adopts more than one equivalent pressure cavity Electromagnetic Dynamic flow regulating and controlling valve to constitute the tail level mechanism of decompressor.
According to the automatically controlled adjusting flow of the described compressed natural gas of claim 1 decompressor, it is characterized in that 2, described equivalent pressure cavity Electromagnetic Dynamic flow regulating and controlling valve is erect and is installed on the decompression cavity loam cake.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420034773 CN2735021Y (en) | 2004-05-17 | 2004-05-17 | Compressed natural gas electric control flow regulation decompressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420034773 CN2735021Y (en) | 2004-05-17 | 2004-05-17 | Compressed natural gas electric control flow regulation decompressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2735021Y true CN2735021Y (en) | 2005-10-19 |
Family
ID=35264897
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420034773 Expired - Fee Related CN2735021Y (en) | 2004-05-17 | 2004-05-17 | Compressed natural gas electric control flow regulation decompressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2735021Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105370464A (en) * | 2014-08-20 | 2016-03-02 | 上海瑾冠电气科技有限公司 | Supersonic-speed fuel injection control valve |
-
2004
- 2004-05-17 CN CN 200420034773 patent/CN2735021Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105370464A (en) * | 2014-08-20 | 2016-03-02 | 上海瑾冠电气科技有限公司 | Supersonic-speed fuel injection control valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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 |