CN1275676A - Low-pressure electric controlled dimethyl ether fuel injection system - Google Patents
Low-pressure electric controlled dimethyl ether fuel injection system Download PDFInfo
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- CN1275676A CN1275676A CN00119435A CN00119435A CN1275676A CN 1275676 A CN1275676 A CN 1275676A CN 00119435 A CN00119435 A CN 00119435A CN 00119435 A CN00119435 A CN 00119435A CN 1275676 A CN1275676 A CN 1275676A
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- dimethyl ether
- pressure
- valve
- ether fuel
- pipeline
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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 present invention is mainly formed from fuel injector, electric control unit, electromagnetic valve, pressure gauge, pressure-regulating valve, high-pressure nitrogen gas cylinder, dimethyl ether fuel tank, non-return valve and fuel tank opening and closing valve. The regulation of pressure-regulating valve can stabilize pressure at about 3.p MPa in the dimethyl ether fuel tank, this moment said dimethyl ether fuel is in liquid state favourable for injecting. The electromagnetic valve and one-way valve are mounted in connecting pipeline between fuel tank and injector, and the electric control unit is used to control opening time of the electromagnetic valve and inject the dimethyl fuel into the engine at proper moment for a certain time so as to implement optimum control of system.
Description
What the present invention relates to is a kind of dimethyl ether fuel injection system, and particularly a kind of low-pressure electric controlled dimethyl ether fuel injection system belongs to the internal-combustion engine research field.
Because the boiling point (24.9 ℃) that dimethyl ether is low, high vapor tension (normal temperature is down for about 0.5MPa) and low viscosity will directly spray into it in the cylinder, need liquefy and handle and take other a series of special measure.Therefore, traditional fuel injection system can not be applicable to dimethyl ether fuel.
In prior art,, mainly contain high pressure common rail fuel injection system and pump-pipe-mouth fuel injection system to the conception of dimethyl ether engine oil supply system.Pump-pipe-mouth fuel injection system is transformed conventional diesel pump-pipe-mouth fuel injection system and is obtained, and this system is difficult to effectively overcome the leakage of dimethyl ether and the problem easy to wear that low viscosity is brought even part.The high pressure common rail fuel injection system of the Austrian AVL company invention that document SAE981158 introduces is made up of dimethyl ether fuel jar and supplier, fuel injection apparatus, low pressure collection and purification device, high-pressure service pump, compression pump and solenoid valve etc.At first dimethyl ether is forced into and squeezes into high pressure rail about 30.0MPa by high-pressure service pump, again by electromagnetic valve with the fuel in the track by oil nozzle to the engine air inner cylinder direct injection.For the dimethyl ether in the fuel pot is in a liquid state, be equipped with in the fuel pot to bathe and soak the formula compression pump, a jar internal pressure is remained more than the dimethyl ether saturation vapour pressure.In purifying collecting tank, dimethyl ether is rendered as gaseous state, need establish a compression pump again gaseous dimethyl is pressed in the fuel pot again.This compression pump can not be driven by motor, so as under the engine shutdown state compression pump endure.The major defect of high-pressure common rail oil-fired system is that control procedure is complicated, and component are too many, need multiple compression pump, and the processing cost height is unfavorable for the large-scale popularization application.
Purpose of the present invention: in order to overcome the shortcoming of above-mentioned prior art, design a kind of low-pressure electric controlled fuel injection system, both can solve the leakage problem of dimethyl ether fuel, the kinematic pair wear problem of avoiding the low viscosity of dimethyl ether to bring again, significantly reduce the wearing and tearing of mating plate, manufacture cost greatly reduces than high pressure common rail fuel injection system simultaneously.
Technological scheme of the present invention: the present invention mainly comprises oil nozzle, ECU (Electrical Control Unit), solenoid valve, pressure gauge, pressure regulator valve, high-pressure nitrogen bottle, dimethyl ether fuel jar, one-way valve, fuel pot switch valve and pipeline etc.The high-pressure nitrogen bottle upper end is connected by pipeline and dimethyl ether fuel jar top, dimethyl ether fuel jar lower exit place is connected with an end of solenoid valve by pipeline, the other end of solenoid valve is connected with the front end of one-way valve by pipeline, and the rear end of one-way valve joins by pipeline and oil nozzle entrance point.Pressure regulator valve is housed above high-pressure nitrogen bottle, regulates pressure regulator valve, make the interior pressure stability of dimethyl ether fuel jar about 3.0MPa.This can make dimethyl ether remain liquid state on the one hand, is convenient to realize the injection of dimethyl ether fuel on the other hand.Above the dimethyl ether fuel jar, pressure gauge is housed, is used for monitoring dimethyl ether fuel jar internal pressure situation of change.In the pipeline of dimethyl ether fuel jar outlet port the fuel pot switch valve is housed, during shutdown, this valve closing prevents that dimethyl ether from leaking.Be connected by circuit between ECU (Electrical Control Unit) and the solenoid valve.Send instruction by ECU (Electrical Control Unit), the unlatching of decision solenoid valve constantly and the opening time so that with the liquid dimethyl ether fuel carve in due course with certain hour in oil nozzle sprays into the motor premixing cavity, realize the optimization control of system.The effect of one-way valve is to stop the interior high-temperature fuel gas of cylinder to be back to oil-fired system, thereby avoids fully because the accident that tempering causes.
Beneficial effect of the present invention: the low-pressure electric controlled fuel injection system that the present invention adopts, structure than high pressure common rail fuel injection system is greatly simplified, processing cost is low, again can by ECU (Electrical Control Unit) send instructions the decision solenoid valve unlatching constantly and the opening time control the injection of dimethyl ether fuel, thereby the optimization control of feasible system.
Below in conjunction with accompanying drawing the present invention is further described:
Fig. 1 is the principle of compositionality figure of system of the present invention
As shown in Figure 1, the present invention mainly comprises oil nozzle 5, ECU (Electrical Control Unit) 6, solenoid valve 7, pressure gauge 8, pressure regulator valve 9, high-pressure nitrogen bottle 10, dimethyl ether fuel jar 11, one-way valve 13, fuel pot switch valve 12 and pipeline etc.High-pressure nitrogen bottle 10 upper ends are connected by pipeline and dimethyl ether fuel jar 11 tops, dimethyl ether fuel jar 11 lower exit places are connected with an end of solenoid valve 7 by pipeline, the other end of solenoid valve 7 is connected by the front end of pipeline with one-way valve 13, and the rear end of one-way valve 13 joins by pipeline and oil nozzle 5 entrance points.Pressure regulator valve 9 is housed in the pipeline of high-pressure nitrogen bottle 10 upper ends, regulates pressure regulator valve 9, make pressure stability in the dimethyl ether fuel jar 11 about 3.0MPa.This can make dimethyl ether fuel keep liquid on the one hand, is convenient to realize the injection of dimethyl ether fuel on the other hand.Pressure gauge 8 is housed above dimethyl ether fuel jar 11, is used for monitoring dimethyl ether fuel jar internal pressure situation of change.In dimethyl ether fuel jar 11 outlet port pipelines, fuel pot switch valve 12 is housed, during shutdown, closes this valve and can prevent that dimethyl ether fuel from leaking.Be connected by circuit between ECU (Electrical Control Unit) 6 and the solenoid valve 7, send the unlatching moment and the opening time of instruction decision solenoid valve 7 by ECU (Electrical Control Unit) 6, so that with the liquid dimethyl ether fuel carve in due course with certain hour in oil nozzle 5 sprays into the premixing cavity of motor, realize the optimization control of system.The effect of one-way valve 13 is to stop the interior high-temperature fuel gas of cylinder to be back to oil-fired system, thereby avoids fully because the accident that tempering causes.
Claims (2)
1, a kind of low-pressure electric controlled dimethyl ether fuel injection system, mainly comprise oil nozzle (5), dimethyl ether fuel jar (11), solenoid valve (7) and pipeline etc., it is characterized in that this system also comprises ECU (Electrical Control Unit) (6), pressure gauge (8), pressure regulator valve (9), high-pressure nitrogen bottle (10), fuel pot switch valve (12), one-way valve (13), high-pressure nitrogen bottle (10) upper end is connected by pipeline and dimethyl ether fuel jar (11) top, dimethyl ether fuel jar (11) lower exit place is connected by the end of pipeline with solenoid valve (7), the other end of solenoid valve (7) is connected by the front end of pipeline with one-way valve (13), and the rear end of one-way valve (13) joins by pipeline and oil nozzle (5) entrance point.
2, a kind of low-pressure electric controlled dimethyl ether fuel injection system, its feature also is in the pipeline of high-pressure nitrogen bottle (10) upper end pressure regulator valve (9) to be housed, in dimethyl ether fuel jar (11) top pressure gauge (8) is housed, in the pipeline of dimethyl ether fuel jar (11) outlet port, fuel pot switch valve (12) is housed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00119435A CN1108442C (en) | 2000-07-11 | 2000-07-11 | Low-pressure electric controlled dimethyl ether fuel injection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00119435A CN1108442C (en) | 2000-07-11 | 2000-07-11 | Low-pressure electric controlled dimethyl ether fuel injection system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1275676A true CN1275676A (en) | 2000-12-06 |
| CN1108442C CN1108442C (en) | 2003-05-14 |
Family
ID=4587682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN00119435A Expired - Fee Related CN1108442C (en) | 2000-07-11 | 2000-07-11 | Low-pressure electric controlled dimethyl ether fuel injection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1108442C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1982667B (en) * | 2006-03-31 | 2010-04-21 | 段玉献 | Fuel supplier and supplying method for mixed-fuel engine |
| CN111706450A (en) * | 2020-06-29 | 2020-09-25 | 东风商用车有限公司 | Dual-fuel supply system |
| CN111997745A (en) * | 2020-07-20 | 2020-11-27 | 北京工业大学 | Nitrogen-hydrogen-doped gasoline fuel rotor machine and control method thereof |
| CN112502864A (en) * | 2020-12-19 | 2021-03-16 | 中船动力有限公司 | Natural gas feeding pressure adjusting device of dual-fuel engine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5485818A (en) * | 1995-02-22 | 1996-01-23 | Navistar International Transportation Corp. | Dimethyl ether powered engine |
-
2000
- 2000-07-11 CN CN00119435A patent/CN1108442C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1982667B (en) * | 2006-03-31 | 2010-04-21 | 段玉献 | Fuel supplier and supplying method for mixed-fuel engine |
| CN111706450A (en) * | 2020-06-29 | 2020-09-25 | 东风商用车有限公司 | Dual-fuel supply system |
| CN111997745A (en) * | 2020-07-20 | 2020-11-27 | 北京工业大学 | Nitrogen-hydrogen-doped gasoline fuel rotor machine and control method thereof |
| CN112502864A (en) * | 2020-12-19 | 2021-03-16 | 中船动力有限公司 | Natural gas feeding pressure adjusting device of dual-fuel engine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1108442C (en) | 2003-05-14 |
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