CN1982667B - Fuel supplier and supplying method for mixed-fuel engine - Google Patents
Fuel supplier and supplying method for mixed-fuel engine Download PDFInfo
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- CN1982667B CN1982667B CN2006101450631A CN200610145063A CN1982667B CN 1982667 B CN1982667 B CN 1982667B CN 2006101450631 A CN2006101450631 A CN 2006101450631A CN 200610145063 A CN200610145063 A CN 200610145063A CN 1982667 B CN1982667 B CN 1982667B
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- valve
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- dimethyl ether
- negative pressure
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
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Abstract
The inventive device comprises a gas bomb, a pressure-reducing control valve, a magnetic valve and negative pressure valve and they are connected in order through a pipeline. The negative pressure valve is in communication with the air inlet of the engine. The diethyl ether being as the fuel to be supplied is stored in the gas bomb and passes through in order the pressure-reducing control valve, the magnetic valve and the negative pressure valve through the pipeline and then enters into the engine cylinder from the air inlet of the engine. The invention can regulate the diethyl ether content in the fuel supplied to the engine by regulating the pressure-reducing control valve.
Description
Technical field
The present invention relates to a kind of mixed fuel engine, particularly a kind of fuel supply device of mixed fuel engine and method.
Background technique
Diesel engine is used for large-sized power machinery mostly.Aspect the firing effect that improves diesel engine, developed country has reached very high level on the material of high-pressure service pump and oil nozzle and technology, thereby can obtain firing effect preferably, but its cost height, complex manufacturing is not suitable on market and widelys popularize.Because the characteristic of diesel engine, on stability than petrol engine difference, noise is big, cold start-up in winter difficulty, the parts of motor have wearing and tearing will reduce engine performance such as piston ring, high-pressure service pump and plunger or the like slightly, and produce over-emitting black exhaust, phenomenons such as energy consumption increasing, the mild wear of machinery makes that fuel combustion is slack-off and produces a lot of adverse consequencess.
Dimethyl ether (dimethyl ether) has high cetane number, is the desirable alternative fuel of diesel engine, and its boiling point is low, easily vaporization, and velocity of combustion is fast, though cetane number is very high, the content of carbon is very little, belongs to clean fuel.Though diesel engine uses dimethyl ether to replace the diesel oil effect very good separately, motor need be transformed into the motor of dimethyl ether special use, and it is difficult to make popularization get up.And if the miscible back of dimethyl ether and diesel oil is used, firing effect also can be fine, but its fusion have any problem, could partial fusion in the time of in the winter time, can not merge in the time of summer, promptly enable the lubricity that a large amount of fusions also can destroy diesel engine high-pressure service pump plunger.
The inventor will use dimethyl ether according to years of researches and test empirical discovery, need not diesel engine is done big change, and the air supply system that only needs to add a cover dimethyl ether gets final product, and just can solve the problem of above-mentioned existence.
Summary of the invention
The object of the present invention is to provide a kind of fuel supply device and method of mixed fuel engine, in diesel engine, added the air supply system of a cover dimethyl ether, and designed a kind of method of dimethyl ether air feed, overcome above-mentioned miscible problem, can obtain good firing effect, and having solved problem such as diesel engine over-emitting black exhaust, fuel saving improves power.
To achieve these goals, the invention provides a kind of fuel supply device of mixed fuel engine, the described supplied fuel of wanting is a dimethyl ether, it is characterized in that: include air cylinder, decompression valve, solenoid valve and negative pressure valve, by pipeline above-mentioned air cylinder, decompression valve, solenoid valve and negative pressure valve are connected in turn, make its UNICOM; The suction port UNICOM of described negative pressure valve and motor; Dimethyl ether is stored in the air cylinder, by the UNICOM of pipeline, by decompression valve, solenoid valve and negative pressure valve, is entered in the cylinder by engine intake successively.
Described negative pressure valve includes first valve body and second valve body, and described first valve inner forms through hole, and described through hole has the inclined-plane, the aperture difference at its two ends, and that end of small aperture is by pipeline and solenoid valve UNICOM, that end of large aperture and engine intake UNICOM; Described negative pressure valve also includes valve rod and spring, described valve rod one end forms the tapered end that matches with described through hole inclined plane shape, the other end is formed with flange, the middle part is provided with the valve block that cooperates with engine intake, described tapered end is resisted against the inclined-plane of through hole, described flange is resisted against spring one end, and the spring the other end is resisted against described second valve body.
Described spring is a helical spring.
Described negative pressure valve also includes the controller that is used to control described spring upset.
Be enclosed with thermal insulation layer on described air cylinder and the pipeline.
The present invention also provides a kind of fuel feeding method of mixed fuel engine, includes air cylinder, decompression valve, solenoid valve and negative pressure valve, it is characterized in that, may further comprise the steps:
Dimethyl ether is stored in the air cylinder;
Regulate decompression valve, regulate the content of dimethyl ether in the fuel that is supplied to motor, and change the supply of diesel oil accordingly;
In the time of ato unit, connect solenoid valve, thereby start the dimethyl ether supply system;
Dimethyl ether by decompression valve, solenoid valve and negative pressure valve, is entered in the cylinder by engine intake successively.
Content by dimethyl ether in the fuel that is supplied to motor of decompression valve adjusting is less than or equal to 99%, and is preferred, can be less than or equal to 80%.
In increasing fuel, during the content of dimethyl ether, then reduce the content of diesel oil accordingly; In reducing fuel, during the content of dimethyl ether, then increase the content of diesel oil accordingly, make the total amount of fuel keep certain.
Be enclosed with thermal insulation layer on described air cylinder and the pipeline, utilize the heat of engine coolant circulation generation or the heat of tail gas described air cylinder and pipeline to be incubated by described thermal insulation layer.
Above-mentioned and additional features, advantage of the present invention can further be understood by the detailed description below in conjunction with accompanying drawing.
Description of drawings
Fig. 1 is the structure Block Diagram of fuel supply device of the present invention;
Fig. 2 is the plan view of negative pressure valve;
Schematic representation when Fig. 3 works for negative pressure valve.
Description of reference numerals: air cylinder 1; Decompression valve 2; Solenoid valve 3; Negative pressure valve 4; First valve body 41; Through hole 411; Second valve body 42; Valve rod 43; Tapered end 431; Valve block 432; Flange 433; Spring 44; Pipeline 5.
Embodiment
As shown in Figure 1 to Figure 3, the invention provides a kind of fuel supply device of mixed fuel engine, the time additional feeding mechanism to diesel engine, the described supplied fuel of wanting is a dimethyl ether, described device includes air cylinder 1, decompression valve 2, solenoid valve 3 and negative pressure valve 4, by pipeline 5 above-mentioned air cylinder 1, decompression valve 2, solenoid valve 3 and negative pressure valve 4 are connected in turn, make its UNICOM; The suction port UNICOM of described negative pressure valve 4 and motor; Dimethyl ether is stored in the air cylinder 1, UNICOM by pipeline 5, successively by decompression valve 2, solenoid valve 3 and negative pressure valve 4, enter in the cylinder by engine intake, supply dimethyl ether by above-mentioned additional device to diesel engine thus, the basic structure of diesel engine is not done big change simultaneously.
Described negative pressure valve 4 includes first valve body 41 and second valve body 42, described first valve body, the 41 inner through holes 411 that form, described through hole 411 has the inclined-plane, the aperture difference at its two ends, that end of small aperture is by pipeline 5 and solenoid valve 3 UNICOMs, that end of large aperture and engine intake UNICOM; Described negative pressure valve 4 also includes valve rod 43 and spring 44, described valve rod 43 1 ends form the tapered end 431 that matches with described through hole 411 inclined plane shapes, the other end is formed with flange 433, described valve rod 43 middle parts are provided with the valve block 432 that cooperates with engine intake, described tapered end 431 is resisted against the inclined-plane of through hole 411, described flange 433 is resisted against spring 44 1 ends, and the other end of described spring 44 is resisted against described second valve body 42.Wherein said spring 44 is helical spring in the present embodiment.In addition, negative pressure valve 4 also with air-strainer UNICOM, make air to enter motor by negative pressure valve 4.
Wherein valve rod 43 can move forward and backward in negative pressure valve 4, as shown in Figure 2, when motor and feeding mechanism are not activated, in negative pressure valve 4, can not produce negative pressure, tapered end 431 owing to the elastic force effect of spring 44 with valve rod 43 compresses on the inclined-plane that is resisted against described through hole 411, with through hole 411 sealings, make not UNICOM of solenoid valve 3 and engine intake, so also just make not UNICOM of feeding mechanism and engine intake, dimethyl ether can not be supplied to motor, and the state of valve block 432 is the suction ports that cover and kill engine at this moment; As shown in Figure 3, in the time of motor and feeding mechanism startup, in negative pressure valve 4, produce negative pressure, overcome thus spring 44 elastic force and with valve rod 43 to pusher, make the tapered end 431 of valve rod 43 leave the inclined-plane of described through hole 411, through hole 411 is opened, conducting solenoid valve 3 and engine intake thus, make feeding mechanism and engine intake UNICOM, dimethyl ether is supplied to motor by negative pressure valve 4, this moment, the state of valve block 432 was to flip an angle, and such as 90 °, and opened engine intake.The motion state of above-mentioned valve block 432 can be by the control of controller (not shown), it is the upset of controller control valve block 432, make its suction port that when feeding mechanism is not activated, kills engine, and when feeding mechanism starts, open engine intake.
In addition, negative pressure valve of the present invention is not limited to the negative pressure valve 4 described in the foregoing description, also can adopt in the prior art other negative pressure valve, is the valve of UD-6HAC220V such as model.
In the winter of cold; especially in the north; temperature is lower than-25 ℃ through regular meeting; and the boiling point of dimethyl ether is-25 ℃; in this case; motor will be difficult to start; for this reason; can on described air cylinder 1 and pipeline 5, be enclosed with thermal insulation layer; utilize the heat that engine coolant circulation produces or the heat of tail gas described air cylinder 1 and pipeline 5 to be incubated by described thermal insulation layer, such as, at air cylinder 1 when motor is nearer; the heat that just can utilize the engine coolant circulation to produce is incubated air cylinder 1, and utilizes the heat of tail gas that motor discharges that described pipeline 5 is incubated.Like this, can be lower than under-25 ℃ the situation, keeping the ambient temperature of dimethyl ether to be higher than in a long time-25 ℃, thereby even making the fuel supply device that also can easily use mixed fuel engine of the present invention winter in cold.
The present invention also provides a kind of fuel feeding method of mixed fuel engine, includes air cylinder, decompression valve, solenoid valve and negative pressure valve, wherein, may further comprise the steps:
Dimethyl ether is stored in the air cylinder;
Regulate decompression valve, regulate the content of dimethyl ether in the fuel that is supplied to motor, and change the supply of diesel oil accordingly;
In the time of ato unit, connect solenoid valve, thereby start the dimethyl ether supply system;
Dimethyl ether by decompression valve, solenoid valve and negative pressure valve, is entered in the cylinder by engine intake successively.
Usually, the content of dimethyl ether is less than or equal to 90% in the fuel of being regulated by decompression valve that is supplied to motor, and is preferred, the content of dimethyl ether can be reduced, such as being less than or equal to 80%.
In increasing fuel, during the content of dimethyl ether, then reduce the content of diesel oil accordingly; During the content of dimethyl ether, then increase the content of diesel oil accordingly in reducing fuel, make the total amount of fuel keep certain, the normal use for motor does not have adverse effect thus.
In the method for the invention, can on described air cylinder 1 and pipeline 5, be enclosed with thermal insulation layer, utilize the heat of engine coolant circulation generation or the heat of tail gas described air cylinder 1 and pipeline 5 to be incubated by described thermal insulation layer.
The fuel supply device of mixed fuel engine provided by the invention and method, adopt dimethyl ether and diesel oil as fuel combination, dimethyl ether has very high cetane number, and boiling point is low, easily vaporization, velocity of combustion is fast, though cetane number is very high, the content of carbon is very little, belongs to clean fuel, itself and diesel oil use jointly, can overcome problems such as there being over-emitting black exhaust in the diesel engine.Simultaneously, because this feeding mechanism and method are directly dimethyl ether to be supplied to motor, avoid the fusion process of dimethyl ether and diesel oil, thereby also avoided above-mentioned dimethyl ether and diesel oil to merge a series of problems that produced, can effectively improve the working condition of diesel engine.
Be to be understood that, the above illustrative and nonrestrictive just for the purpose of the present invention of explanation in conjunction with the embodiments, without departing from the spirit and scope of the present invention, can make many changes and modification to the present invention, it all will drop in the scope of the invention defined by the claims.
Claims (9)
1. the fuel supply device of a mixed fuel engine, the described supplied fuel of wanting is a dimethyl ether, it includes air cylinder, decompression valve, solenoid valve and negative pressure valve, by pipeline above-mentioned air cylinder, decompression valve, solenoid valve and negative pressure valve is connected in turn, and makes its UNICOM; The suction port UNICOM of described negative pressure valve and motor; Dimethyl ether is stored in the air cylinder, by the UNICOM of pipeline, by decompression valve, solenoid valve and negative pressure valve, is entered in the cylinder by engine intake successively;
It is characterized in that: described negative pressure valve includes first valve body and second valve body, described first valve inner forms through hole, and described through hole has the inclined-plane, the aperture difference at its two ends, that end of small aperture is by pipeline and solenoid valve UNICOM, that end of large aperture and engine intake UNICOM; Described negative pressure valve also includes valve rod and spring, described valve rod one end forms the tapered end that matches with described through hole inclined plane shape, the other end is formed with flange, the middle part is provided with the valve block that cooperates with engine intake, described tapered end is resisted against the inclined-plane of through hole, described flange is resisted against spring one end, and the spring the other end is resisted against described second valve body.
2. the fuel supply device of mixed fuel engine as claimed in claim 1, it is characterized in that: described spring is a helical spring.
3. the fuel supply device of mixed fuel engine as claimed in claim 1 is characterized in that: described negative pressure valve also includes the controller that is used to control described spring upset.
4. the fuel supply device of mixed fuel engine as claimed in claim 1 or 2 is characterized in that: be enclosed with thermal insulation layer on described air cylinder and the pipeline.
5. the fuel feeding method of a mixed fuel engine includes air cylinder, decompression valve, solenoid valve and negative pressure valve, it is characterized in that, may further comprise the steps:
Dimethyl ether is stored in the air cylinder;
Regulate decompression valve, regulate the content of dimethyl ether in the fuel that is supplied to motor, and change the supply of diesel oil accordingly;
In the time of ato unit, connect solenoid valve, thereby start the dimethyl ether supply system;
Dimethyl ether by decompression valve, solenoid valve and negative pressure valve, is entered in the cylinder by engine intake successively.
6. the fuel feeding method of mixed fuel engine as claimed in claim 5 is characterized in that: the content of dimethyl ether is less than or equal to 99% in the fuel of being regulated by decompression valve that is supplied to motor.
7. the fuel feeding method of mixed fuel engine as claimed in claim 5 is characterized in that: the content of dimethyl ether is less than or equal to 80% in the fuel of being regulated by decompression valve that is supplied to motor.
8. the fuel feeding method of mixed fuel engine as claimed in claim 5 is characterized in that: during the content of dimethyl ether, then reduce the content of diesel oil accordingly in increasing fuel; In reducing fuel, during the content of dimethyl ether, then increase the content of diesel oil accordingly, make the total amount of fuel keep certain.
9. the fuel feeding method of mixed fuel engine as claimed in claim 5, it is characterized in that: be enclosed with thermal insulation layer on described air cylinder and the pipeline, utilize the heat of engine coolant circulation generation or the heat of tail gas described air cylinder and pipeline to be incubated by described thermal insulation layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006101450631A CN1982667B (en) | 2006-03-31 | 2006-11-30 | Fuel supplier and supplying method for mixed-fuel engine |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610066871.9 | 2006-03-31 | ||
| CN200610066871 | 2006-03-31 | ||
| CN2006101450631A CN1982667B (en) | 2006-03-31 | 2006-11-30 | Fuel supplier and supplying method for mixed-fuel engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1982667A CN1982667A (en) | 2007-06-20 |
| CN1982667B true CN1982667B (en) | 2010-04-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006101450631A Expired - Fee Related CN1982667B (en) | 2006-03-31 | 2006-11-30 | Fuel supplier and supplying method for mixed-fuel engine |
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| Country | Link |
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| CN (1) | CN1982667B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113483939B (en) * | 2021-07-06 | 2022-06-14 | 中国人民解放军国防科技大学 | Fixed position variable pressure fuel injection system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1074976A (en) * | 1992-09-14 | 1993-08-04 | 新疆石油管理局塔西南勘探开发公司 | Transforming diesel engine is the method for duel fuel engine |
| CN1275676A (en) * | 2000-07-11 | 2000-12-06 | 上海交通大学 | Low-pressure electric controlled dimethyl ether fuel injection system |
| CN1289003A (en) * | 2000-11-17 | 2001-03-28 | 清华大学 | Electrically controlled dual-fuel automobile engine system refitted from mechanical diesel engine |
| CN2504395Y (en) * | 2001-10-08 | 2002-08-07 | 上海乾通汽车附件有限公司 | L.P.G. controller for boosting cycle, motorcycle |
| US20040139944A1 (en) * | 2003-01-06 | 2004-07-22 | Hitachi, Ltd. | Method and device for controlling fuel injection in the bi-fuel internal combustion engine |
| CN2661475Y (en) * | 2003-06-10 | 2004-12-08 | 河南中原绿能高科有限责任公司 | Diesel oil-liquefied natural gas electric control injection dual fuel automobile |
-
2006
- 2006-11-30 CN CN2006101450631A patent/CN1982667B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1074976A (en) * | 1992-09-14 | 1993-08-04 | 新疆石油管理局塔西南勘探开发公司 | Transforming diesel engine is the method for duel fuel engine |
| CN1275676A (en) * | 2000-07-11 | 2000-12-06 | 上海交通大学 | Low-pressure electric controlled dimethyl ether fuel injection system |
| CN1289003A (en) * | 2000-11-17 | 2001-03-28 | 清华大学 | Electrically controlled dual-fuel automobile engine system refitted from mechanical diesel engine |
| CN2504395Y (en) * | 2001-10-08 | 2002-08-07 | 上海乾通汽车附件有限公司 | L.P.G. controller for boosting cycle, motorcycle |
| US20040139944A1 (en) * | 2003-01-06 | 2004-07-22 | Hitachi, Ltd. | Method and device for controlling fuel injection in the bi-fuel internal combustion engine |
| CN2661475Y (en) * | 2003-06-10 | 2004-12-08 | 河南中原绿能高科有限责任公司 | Diesel oil-liquefied natural gas electric control injection dual fuel automobile |
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| Publication number | Publication date |
|---|---|
| CN1982667A (en) | 2007-06-20 |
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Granted publication date: 20100421 Termination date: 20121130 |