CN204677337U - A kind of universal Diesel Fuel-Natural Gas Dual fuel Electricity Spurt System - Google Patents
A kind of universal Diesel Fuel-Natural Gas Dual fuel Electricity Spurt System Download PDFInfo
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- CN204677337U CN204677337U CN201520414582.8U CN201520414582U CN204677337U CN 204677337 U CN204677337 U CN 204677337U CN 201520414582 U CN201520414582 U CN 201520414582U CN 204677337 U CN204677337 U CN 204677337U
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Abstract
The utility model relates to a kind of universal Diesel Fuel-Natural Gas Dual fuel Electricity Spurt System, comprise piston-cylinder and fuel injector, piston-cylinder comprises cylinder head, cylinder wall and piston, cylinder head covers the top of cylinder wall, firing chamber is by cylinder head, cylinder wall and piston limit, fuel injector is installed in cylinder head, fuel injector comprises fuel channel and fuel nozzle, the tip of fuel nozzle is arranged in firing chamber, gaseous fuel and pilot fuel are directly injected in firing chamber by nozzle, the gas-entered passageway and exhaust passage that communicate with firing chamber is offered in cylinder head, gas-entered passageway and exhaust passage are controlled by suction valve and outlet valve respectively.The utility model just can introduce the alternative fuel of rock gas as diesel oil when not needing change diesel engine essential structure, greatly reduce the reforming cost of diesel engine, and avoid the restriction of natural gas fired mode and combustion manner, accommodation is wider.
Description
Technical field
The utility model relates to a kind of universal Diesel Fuel-Natural Gas Dual fuel Electricity Spurt System, belongs to diesel oil-natural gas double fuel engine field.
Background technique
Rock gas is as typical gaseous fuel, and its abundance, cost are low, discharge quantity of particulate matter is little, is the ideal substitute of conventional diesel fuel.But, the combustion ratio of rock gas is greater than diesel oil, can not automatically as diesel oil light, and usually needs to be mixed with the air of suction by rock gas in advance, then use the air-natural gas mixture in spark ignitor firing chamber, thus cause diesel engine not to be used for rock gas.And this firing mode make the compression ratio of rock gas and import volume little, output power and the combustion efficiency of motor are low, and rock gas is only flammable within the scope of narrower air-fuel proportions of ingredients, and accommodation is narrow.
Traditional diesel engine adopts ignition by compression mode, the compression ratio of compression ignition engine is more much higher than spark ignition engine, the feature of high compression ratio and un-throttled gas handling system make that fuel economy is higher, performance better and in energy fuel consumption lower.But replace diesel fuel with rock gas, first need to improve diesel engine, increase auxiliary ignition system or adopt more complicated electronic control system, reforming cost is too high.
Summary of the invention
The purpose of this utility model overcomes deficiency of the prior art, a kind of universal Diesel Fuel-Natural Gas Dual fuel Electricity Spurt System is provided, the alternative fuel of rock gas as diesel oil just can be introduced when not needing change diesel engine essential structure, greatly reduce the reforming cost of diesel engine, and avoid the restriction of natural gas fired mode and combustion manner, accommodation is wider.
For achieving the above object, the technological scheme taked of the utility model is as follows:
A kind of universal Diesel Fuel-Natural Gas Dual fuel Electricity Spurt System, comprise piston-cylinder 1 and fuel injector 2, described piston-cylinder 1 comprises cylinder head 11, cylinder wall 12 and piston 13, described cylinder head 11 covers the top of described cylinder wall 12, firing chamber 3 is by described cylinder head 11, cylinder wall 12 and piston 13 limit, described fuel injector 2 is installed in described cylinder head 11, described fuel injector 2 comprises fuel channel 21 and fuel nozzle 22, the tip of described fuel nozzle 22 is arranged in described firing chamber 3, gaseous fuel and pilot fuel are directly injected in described firing chamber 3 by described nozzle 22, the gas-entered passageway 4 and exhaust passage 5 that communicate with described firing chamber 3 is offered in described cylinder head 11, described gas-entered passageway 4 and exhaust passage 5 are controlled by suction valve 41 and outlet valve 51 respectively.
Preferably, described fuel channel 21 comprises separate fuel gas passage and pilot fuel passage, described fuel nozzle 22 comprises separate gas fuel nozzle and pilot fuel nozzle, described fuel gas passage is connected with gas fuel nozzle, and described pilot fuel passage is connected with pilot fuel nozzle.
Preferably, be connected with fuel hose 42 in described gas-entered passageway 4, described fuel hose be provided with fuel safety check 43 and fuel control valve 44, fuel control valve 44 is for controlling the amount of the fuel introduced in gas-entered passageway 4.
Preferably, described gaseous fuel is rock gas, and described pilot fuel is diesel oil.
Preferably, in described firing chamber 3, spray rock gas and diesel oil for carry out simultaneously, or first spray diesel oil, and then spray rock gas.
Preferably, duel fuel engine start up period and the idling stage, fuel injector 2 only sprays diesel oil in firing chamber 3, and when duel fuel engine runs well, fuel injector 2 only sprays diesel oil in firing chamber 3, or sprays diesel oil-rock gas mixed gas.
The firing mode of universal Diesel Fuel-Natural Gas Dual fuel Electricity Spurt System of the present utility model is: spray in firing chamber by fuel nozzle by a small amount of pilot fuel and gaseous fuel, when piston stroking upward is by near for mixed pressure reducer coupling top dead center, the mixed gas that the high temperature that compression produces makes pilot fuel ignite in cylinder, and mixed fire with it, promote piston movement and do work.Just can be changed between full diesel oil working method and double fuel working method easily by simple electronic control system subsequently.
The beneficial effects of the utility model are as follows:
The utility model remains the basic component structural of former diesel engine, ignition by compression mode, high compression ratio are constant, rock gas and diesel oil is introduced as fuel combination by Diesel Fuel-Natural Gas Dual fuel Electricity Spurt System, avoid the use of the electronic control system of auxiliary ignition system or complexity, structure is simple, greatly reduce the reforming cost of diesel engine, and avoid the restriction of natural gas fired mode and combustion manner, accommodation is wider.
Accompanying drawing illustrates:
Fig. 1: universal Diesel Fuel-Natural Gas Dual fuel Electricity Spurt System schematic diagram of the present utility model.
embodiment:
Below in conjunction with the drawings and specific embodiments, the utility model is described further.
Embodiment 1
As shown in Figure 1, a kind of universal Diesel Fuel-Natural Gas Dual fuel Electricity Spurt System, comprise piston-cylinder 1 and fuel injector 2, described piston-cylinder 1 comprises cylinder head 11, cylinder wall 12 and piston 13, described cylinder head 11 covers the top of described cylinder wall 12, firing chamber 3 is by described cylinder head 11, cylinder wall 12 and piston 13 limit, described fuel injector 2 is installed in described cylinder head 11, described fuel injector 2 comprises fuel channel 21 and fuel nozzle 22, described fuel channel 21 comprises separate fuel gas passage and pilot fuel passage, described fuel nozzle 22 comprises separate gas fuel nozzle and pilot fuel nozzle, described fuel gas passage is connected with gas fuel nozzle, described pilot fuel passage is connected with pilot fuel nozzle, the tip of described fuel nozzle 22 is arranged in described firing chamber 3, gaseous fuel and pilot fuel are directly injected in described firing chamber 3 by described nozzle 22, described gaseous fuel is rock gas, described pilot fuel is diesel oil, rock gas and diesel oil is sprayed for carry out simultaneously in described firing chamber 3, or first spray diesel oil, and then rock gas is sprayed, the gas-entered passageway 4 and exhaust passage 5 that communicate with described firing chamber 3 is offered in described cylinder head 11, described gas-entered passageway 4 and exhaust passage 5 are controlled by suction valve 41 and outlet valve 51 respectively, fuel hose 42 is connected with in described gas-entered passageway 4, described fuel hose is provided with fuel safety check 43 and fuel control valve 44, fuel control valve 44 is for controlling the amount of the fuel introduced in gas-entered passageway 4, duel fuel engine start up period and the idling stage, fuel injector 2 only sprays diesel oil in firing chamber 3, when duel fuel engine runs well, fuel injector 2 only sprays diesel oil in firing chamber 3, or spray diesel oil-rock gas mixed gas.
Below only the utility model and mode of execution thereof are described; this description is not restricted; shown in accompanying drawing is also one of mode of execution of the present utility model; actual structure is not limited thereto; if those skilled in the art enlighten by it; when not departing from the utility model and creating aim, design the structure similar to this technological scheme and mode of execution thereof without creationary, all should work as and belong to protection domain of the present utility model.
Claims (6)
1. a universal Diesel Fuel-Natural Gas Dual fuel Electricity Spurt System, it is characterized in that, comprise piston-cylinder (1) and fuel injector (2), described piston-cylinder (1) comprises cylinder head (11), cylinder wall (12) and piston (13), described cylinder head (11) covers the top of described cylinder wall (12), firing chamber (3) is by described cylinder head (11), cylinder wall (12) and piston (13) limit, described fuel injector (2) is installed in described cylinder head (11), described fuel injector (2) comprises fuel channel (21) and fuel nozzle (22), the tip of described fuel nozzle (22) is arranged in described firing chamber (3), gaseous fuel and pilot fuel are directly injected in described firing chamber (3) by described nozzle (22), the gas-entered passageway (4) and exhaust passage (5) that communicate with described firing chamber (3) is offered in described cylinder head (11), described gas-entered passageway (4) and exhaust passage (5) are controlled by suction valve (41) and outlet valve (51) respectively.
2. universal Diesel Fuel-Natural Gas Dual fuel Electricity Spurt System as claimed in claim 1, it is characterized in that, described fuel channel (21) comprises separate fuel gas passage and pilot fuel passage, described fuel nozzle (22) comprises separate gas fuel nozzle and pilot fuel nozzle, described fuel gas passage is connected with gas fuel nozzle, and described pilot fuel passage is connected with pilot fuel nozzle.
3. universal Diesel Fuel-Natural Gas Dual fuel Electricity Spurt System as claimed in claim 1, is characterized in that, is connected with fuel hose (42) in described gas-entered passageway (4), described fuel hose is provided with fuel safety check (43) and fuel control valve (44).
4. universal Diesel Fuel-Natural Gas Dual fuel Electricity Spurt System as claimed in claim 1, is characterized in that, described gaseous fuel is rock gas, and described pilot fuel is diesel oil.
5. universal Diesel Fuel-Natural Gas Dual fuel Electricity Spurt System as claimed in claim 4, is characterized in that, in described firing chamber (3), injection rock gas and diesel oil are for carry out simultaneously, or first spray diesel oil, and then spray rock gas.
6. universal Diesel Fuel-Natural Gas Dual fuel Electricity Spurt System as claimed in claim 1, it is characterized in that, duel fuel engine start up period and the idling stage, fuel injector (2) only sprays diesel oil in firing chamber (3), when duel fuel engine runs well, fuel injector (2) only sprays diesel oil in firing chamber (3), or sprays diesel oil-rock gas mixed gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520414582.8U CN204677337U (en) | 2015-06-16 | 2015-06-16 | A kind of universal Diesel Fuel-Natural Gas Dual fuel Electricity Spurt System |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520414582.8U CN204677337U (en) | 2015-06-16 | 2015-06-16 | A kind of universal Diesel Fuel-Natural Gas Dual fuel Electricity Spurt System |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204677337U true CN204677337U (en) | 2015-09-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520414582.8U Expired - Fee Related CN204677337U (en) | 2015-06-16 | 2015-06-16 | A kind of universal Diesel Fuel-Natural Gas Dual fuel Electricity Spurt System |
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| CN (1) | CN204677337U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106014600A (en) * | 2016-06-20 | 2016-10-12 | 上海交通大学 | Combustion system of gas engine |
-
2015
- 2015-06-16 CN CN201520414582.8U patent/CN204677337U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106014600A (en) * | 2016-06-20 | 2016-10-12 | 上海交通大学 | Combustion system of gas engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150930 Termination date: 20160616 |