CN202545079U - Diesel oil and online dimethyl ether mixed oil supply system - Google Patents
Diesel oil and online dimethyl ether mixed oil supply system Download PDFInfo
- Publication number
- CN202545079U CN202545079U CN2012200679447U CN201220067944U CN202545079U CN 202545079 U CN202545079 U CN 202545079U CN 2012200679447 U CN2012200679447 U CN 2012200679447U CN 201220067944 U CN201220067944 U CN 201220067944U CN 202545079 U CN202545079 U CN 202545079U
- Authority
- CN
- China
- Prior art keywords
- dimethyl ether
- oil
- diesel
- diesel oil
- fuel
- 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
Links
Images
Landscapes
- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
The utility model discloses a diesel oil and online dimethyl ether mixed oil supply system. The system comprises a diesel oil tank, a diesel oil pump, a mixing cavity, an oil injector, an electric control unit, a high-speed dimethyl ether solenoid valve, a dimethyl ether booster pump and a dimethyl ether tank, wherein the diesel oil tank and the diesel oil pump form a diesel oil supply path; the dimethyl ether tank, the dimethyl ether booster pump and the high-speed dimethyl ether solenoid valve form a dimethyl ether oil supply path; the diesel oil supply path and the dimethyl ether oil supply path are respectively connected with the mixing cavity; the mixing cavity is connected with the oil injector; and dimethyl ether is mixed with the diesel oil in the mixing cavity through the high-speed dimethyl ether solenoid valve between twice diesel oil injection. The condition that diesel oil and dimethyl ether are mixed is applied on the original pump-pipe-nozzle injection system of a diesel engine, and the mixing ratio of the diesel and the dimethyl ether can be adjusted according to the engine working conditions, so taht the combustion of the diesel oil is improved; and therefore, the combustion efficiency of the diesel engine is improved, and the emission is reduced.
Description
Technical field
The utility model belongs to dynamic power machine fields such as automobile, internal-combustion engine, relates in particular to a kind of diesel oil and dimethyl ether on-line mixing oil supply system.
Background technique
Compression ignition engine generally uses diesel oil to act as a fuel, because its thermal efficiency is high, receives people's great attention always.But the harmful soot and the oxynitrides of its discharging are very high, and people take a lot of technical measures to reduce its discharging, but are difficult to simultaneously they reduced.Dimethyl ether has very high cetane number as a kind of emerging clean alternative fuel, no C-C key in its structure of molecule, and atomization is good, and burning can significantly reduce carbon smoke exhaust on compression ignition engine, reduces the discharging and the noise of oxynitrides effectively.Because production of diesel oil is big, dominating the rate of fuel consumption of diesel engine, diesel engine mainly uses diesel oil to act as a fuel in considerable time from now on.A large amount of experiments show, on diesel engine, use the fuel combination of diesel oil blending dimethyl ether can reduce soot and oxynitrides discharging effectively.
In recent years, people begin the fuel combination of diesel oil and dimethyl ether is studied as diesel fuel.Because the ejecting system of diesel engine has developed fairly perfectly, mostly be on conventional diesel engine, ejecting system to be carried out local flow improvement about the fuel combination of diesel oil and dimethyl ether as the technology of diesel fuel both at home and abroad.In the prior art; Document " performance and Study on Emission during diesel engine dimethyl ether fuel/diesel blended fuel " (" XI AN JIAOTONG UNIVERSITY Subject Index ", 2006 the 3rd phases, author: Song Qingshuan etc.) introduced diesel engine with direct injection and used diesel oil and dimethyl ether mixed fuel; Adopt the combustion system and the injection system of former motor; Fuel tank and low pressure oil circuit are changed, and diesel oil and dimethyl ether mixed fuel prepare in advance, are loaded in the seal container; Adopt the nitrogen about 10 barometric pressure that fuel tank is pressurizeed, make dimethyl ether remain liquid state.This method need be prepared fuel combination in advance; And need with fuel combination fuel tank pressure remain on 5 more than the barometric pressure guaranteeing that dimethyl ether is in liquid state, and can not change the mixing of regulating diesel oil and dimethyl ether according to engine operating condition and recently realize high efficiency and low emission.Document " experimental research of diesel oil-dimethyl ether duel fuel engine supply system " (" Wuhan University of Technology's journal "; 2002 the 6th phases; Author: Xiang Xiaojun etc.) introduced a kind of diesel oil-dimethyl ether oil supply system; Before high pressure oil pump, set up fuel mixer; Diesel oil and dimethyl ether are sprayed in the fuel mixer in real time, and it is above guaranteeing that dimethyl ether is in liquid state that the fuel mixer internal pressure remains on 5 barometric pressure, regulates the ratio that diesel oil and the flow in the dimethyl ether entering mixer are controlled diesel oil and dimethyl ether in the mixer according to engine operating condition.This method need be set up fuel mixer, and it is above guaranteeing that dimethyl ether is in liquid state that the mixer internal pressure remains on 5 barometric pressure, and the adjusting of diesel oil-dimethyl ether proportions of ingredients exists certain hysteresis quality, can not satisfy the quick variation of engine operating condition.Document " dimethyl ether fuel diesel engine air flue-cylinder injection compound combustion " (" Shanghai Communications University's journal "; 2008 the 3rd phases; Author: Zhang Junjun etc.) introduced dimethyl ether air flue-cylinder injection compound combustion mode; Utilize dimethyl ether intake port injection and diesel oil in-cylinder direct injection, burn in the hope of realizing the high-efficiency cleaning of motor in the full load scope from the angle of burning.This mode can not utilize dimethyl ether to improve the atomizing of diesel oil, and needs to cooperate alternate manner to widen engine operating condition and reduction discharging.
The model utility content
In order to overcome deficiency of the prior art and defective, the utility model provides a kind of diesel oil and dimethyl ether on-line mixing oil supply system.
The purpose of the utility model realizes through following technological scheme: a kind of diesel oil and dimethyl ether on-line mixing oil supply system, and it comprises: diesel oil tank, diesel fuel filter, diesel oil oil pump, high-pressure oil pipe, mixing chamber, oil sprayer, oil sprayer return tube, ECU, dimethyl ether high-speed electromagnetic valve, dimethyl ether suction booster, dimethyl ether filter and dimethyl ether jar etc.; Wherein, Said diesel oil tank links to each other through first connecting tube with diesel fuel filter; Diesel fuel filter links to each other through second connecting tube with the diesel oil oil pump, and high-pressure oil pipe links to each other with the diesel oil oil pump, and diesel oil tank, diesel fuel filter, diesel oil oil pump and diesel oil high-pressure oil pipe are formed the diesel oil oil feeding line; The diesel oil oil feeding line communicates with mixing chamber; Said dimethyl ether jar links to each other through the 5th connecting tube with the dimethyl ether filter, and the dimethyl ether filter links to each other through the 4th connecting tube with the dimethyl ether suction booster, and the dimethyl ether suction booster links to each other through the 3rd connecting tube with the dimethyl ether high-speed electromagnetic valve; Dimethyl ether jar, dimethyl ether filter, dimethyl ether suction booster and dimethyl ether high-speed electromagnetic valve are formed the dimethyl ether oil feeding line; The dimethyl ether oil feeding line communicates with mixing chamber; ECU is connected with the dimethyl ether high-speed electromagnetic valve; Mixing chamber is connected with oil sprayer; Oil sprayer communicates with the oil sprayer return tube.
The beneficial effect of the utility model is; The utility model diesel oil and dimethyl ether on-line mixing oil supply system; Before oil sprayer, set up mixing chamber, dimethyl ether gets into mixing chamber through the dimethyl ether high-speed electromagnetic valve between twice fuel feeding of diesel oil oil pump mixes with diesel oil, forms fuel combination; And utilize the dimethyl ether high-speed electromagnetic valve to control the flow of dimethyl ether, thereby the proportions of ingredients of control fuel combination.The utility model need not changed the original oil supply system of diesel engine, only needs increase dimethyl ether oil feeding line and ECU just can realize diesel oil and the dimethyl ether mixed fuel that mixed-fuel burning proportion is adjustable, thereby improves the performance and the discharging of diesel engine.
Description of drawings
Fig. 1 is the schematic representation of diesel oil and dimethyl ether on-line mixing principle.
Fig. 2 is the schematic representation of diesel oil and dimethyl ether on-line mixing oil supply system.
Among the figure, diesel oil tank 1, first connecting tube 2, diesel fuel filter 3, second connecting tube 4, diesel oil oil pump 5, high-pressure oil pipe 6, mixing chamber 7, first connecting bolt 8, oil sprayer 9, oil sprayer return tube 10, second connecting bolt 11, ECU 12, connecting line 13, dimethyl ether high-speed electromagnetic valve 14, the 3rd connecting tube 15, dimethyl ether suction booster 16, the 4th connecting tube 17, dimethyl ether filter 18, the 5th connecting tube 19, dimethyl ether jar 20.
Embodiment
Further describe below in conjunction with the practical implementation of accompanying drawing the utility model.
The utility model diesel oil and dimethyl ether on-line mixing oil supply system increase the dimethyl ether oil supply system and realize on diesel engine traditional pump-pipe-nozzle ejecting system basis.The diesel oil high-pressure oil pipe internal pressure change curve of pump-pipe-nozzle injection system is as shown in Figure 1; When the oil sprayer oil spout, the pressure in the diesel oil high-pressure oil pipe is higher, and at after end of injection; Before next fuel injection beginning; Diesel oil high-pressure oil pipe internal pressure generally remains on about 7MPa, therefore can in a period of time before after end of injection, next fuel injection beginning, spray into a certain amount of dimethyl ether in the diesel oil high-pressure oil pipe before oil sprayer, and dimethyl ether gets in the diesel oil high-pressure oil pipe and mixes with diesel oil.Because the dimethyl ether boiling point is very low, fuel combination produces when oil sprayer sprays into cylinder of diesel engine and dodges anxious boiling, improves diesel oil atomization.Dimethyl ether in the fuel combination is an oxygenated fuel, helps the burning of diesel oil.Fuel combination is shorter to the required time of ejection from getting into oil sprayer simultaneously; Therefore can change according to engine operating condition; Get into the dimethyl ether amount in the oil sprayer through controlling every circulation; Can real-time regulated spray into the interior diesel oil of cylinder of diesel engine and the proportions of ingredients of dimethyl ether,, improve the thermal efficiency and the discharging that reduces diesel engine of diesel engine to satisfy the requirement of Under Different Work Condition of Engine.
As shown in Figure 2, the utility model diesel oil and dimethyl ether on-line mixing oil supply system mainly comprise: diesel oil tank 1, diesel fuel filter 3, diesel oil oil pump 5, high-pressure oil pipe 6, mixing chamber 7, oil sprayer 9, oil sprayer return tube 10, ECU 12, dimethyl ether high-speed electromagnetic valve 14, dimethyl ether suction booster 16, dimethyl ether filter 18 and dimethyl ether jar 20.
ECU 12 is connected with dimethyl ether high-speed electromagnetic valve 14; Mixing chamber 7 is connected with oil sprayer 9.Oil sprayer 9 communicates with oil sprayer return tube 10.
The working procedure of the utility model is following: dimethyl ether high-speed electromagnetic valve 14 is in normally off; Dimethyl ether pressure through after 16 superchargings of dimethyl ether suction booster remains on about 20MPa; Greater than the residual voltage in the diesel engine high-pressure oil pipe 6, but less than the injection starting pressure of oil sprayer 9.When oil sprayer 9 oil spouts, the pressure in the mixing chamber 7 is higher, and at after end of injection, before next fuel injection beginning, mixing chamber 7 internal pressures generally remain on about 7MPa.During this period, ECU 12 is according to engine operating condition control dimethyl ether high-speed electromagnetic valve 14, and dimethyl ether gets in the mixing chamber 7 and mixes with diesel oil, forms fuel combination, and fuel combination sprays into cylinder of diesel engine through oil sprayer 9.Oil return in the oil sprayer 9 communicates with the diesel engine intake road through oil sprayer return tube 10, and oil return gets into the cylinder of diesel engine burning at last.ECU 12 calculates the optimum mixture ratio of diesel oil and dimethyl ether according to engine operating condition in each oil spout circulation, the unlatching duration of control dimethyl ether high-speed electromagnetic valve 14 transmits control signal to dimethyl ether high-speed electromagnetic valve 14 in the moment of stipulating then.Because the dimethyl ether boiling point is very low, fuel combination produces when oil sprayer 9 sprays into cylinder of diesel engine and dodges anxious boiling, improves diesel oil atomization; Dimethyl ether in the fuel combination is an oxygenated fuel, helps the burning of diesel oil; Fuel combination is shorter to the required time of ejection from getting into oil sprayer 9; Therefore can change according to engine operating condition; Get into the dimethyl ether amount in the oil sprayer 9 through controlling every circulation; Real-time regulated sprays into the diesel oil and the proportions of ingredients of dimethyl ether in the cylinder of diesel engine, satisfying the requirement of Under Different Work Condition of Engine, thereby improves the discharging of the thermal efficiency with the reduction diesel engine of diesel engine.
Claims (1)
1. diesel oil and dimethyl ether on-line mixing oil supply system; It is characterized in that it mainly comprises: diesel oil tank (1), diesel fuel filter (3), diesel oil oil pump (5), high-pressure oil pipe (6), mixing chamber (7), oil sprayer (9), oil sprayer return tube (10), ECU (12), dimethyl ether high-speed electromagnetic valve (14), dimethyl ether suction booster (16), dimethyl ether filter (18) and dimethyl ether jar (20); Wherein, Said diesel oil tank (1) links to each other through first connecting tube (2) with diesel fuel filter (3); Diesel fuel filter (3) links to each other through second connecting tube (4) with diesel oil oil pump (5); High-pressure oil pipe (6) links to each other with diesel oil oil pump (5), and diesel oil tank (1), diesel fuel filter (3), diesel oil oil pump (5) and diesel oil high-pressure oil pipe (6) are formed the diesel oil oil feeding line; The diesel oil oil feeding line communicates with mixing chamber (7); Said dimethyl ether jar (20) links to each other through the 5th connecting tube (19) with dimethyl ether filter (18); Dimethyl ether filter (18) links to each other through the 4th connecting tube (17) with dimethyl ether suction booster (16), and dimethyl ether suction booster (16) links to each other through the 3rd connecting tube (15) with dimethyl ether high-speed electromagnetic valve (14); Dimethyl ether jar (20), dimethyl ether filter (18), dimethyl ether suction booster (16) and dimethyl ether high-speed electromagnetic valve (14) are formed the dimethyl ether oil feeding line; The dimethyl ether oil feeding line communicates with mixing chamber (7); ECU (12) is connected with dimethyl ether high-speed electromagnetic valve (14); Mixing chamber (7) is connected with oil sprayer (9); Oil sprayer (9) communicates with oil sprayer return tube (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200679447U CN202545079U (en) | 2012-02-28 | 2012-02-28 | Diesel oil and online dimethyl ether mixed oil supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200679447U CN202545079U (en) | 2012-02-28 | 2012-02-28 | Diesel oil and online dimethyl ether mixed oil supply system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202545079U true CN202545079U (en) | 2012-11-21 |
Family
ID=47165724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200679447U Expired - Fee Related CN202545079U (en) | 2012-02-28 | 2012-02-28 | Diesel oil and online dimethyl ether mixed oil supply system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202545079U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102562392A (en) * | 2012-02-28 | 2012-07-11 | 浙江大学 | Diesel and dimethyl ether online mixing oil supply system |
-
2012
- 2012-02-28 CN CN2012200679447U patent/CN202545079U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102562392A (en) * | 2012-02-28 | 2012-07-11 | 浙江大学 | Diesel and dimethyl ether online mixing oil supply system |
| CN102562392B (en) * | 2012-02-28 | 2014-05-21 | 浙江大学 | Diesel and dimethyl ether online mixing oil supply system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100497928C (en) | Double-layer injection fuel oil injector used for diesel oil and dimethyl ether | |
| CN102588124B (en) | Automobile dual-fuel supply system based on single fuel rail and single fuel injector set | |
| CN105114193B (en) | A kind of Methanol/Diesel Dual Fuel diesel engine fuel oil supply method | |
| CN101135280A (en) | Four-stroke petrol engine inner-vat sprinkler | |
| CN111997746A (en) | Air inlet channel and direct injection composite hydrogen-doped gasoline fuel rotor machine and control method thereof | |
| CN112384689B (en) | Diesel and methanol combined combustion engine and control method thereof | |
| CN112112729B (en) | Variable air inlet tumble flow device of direct injection engine in dual-fuel cylinder | |
| CN108571392A (en) | Lean-burn systems and method for spark-ignition engine | |
| CN105673281B (en) | In a kind of gas/liquid double fuel cylinder/cylinder outer pair of injection apparatus and control method | |
| CN102562392B (en) | Diesel and dimethyl ether online mixing oil supply system | |
| CN204677293U (en) | A kind of direct-injection LNG-diesel dual-fuel system | |
| CN201687585U (en) | Fuel system controller of dual-fuel engine | |
| CN202545079U (en) | Diesel oil and online dimethyl ether mixed oil supply system | |
| CN108869105A (en) | A kind of engine water injection system | |
| CN108049987A (en) | The natural gas engine structure of the double injections of hot water mixing in a kind of outer cold water tank of cylinder | |
| CN107905917A (en) | The natural gas engine structure of the double injections of cold water mix inside and outside a kind of cylinder | |
| CN201902265U (en) | Emission control device of passenger car engine based on in-cylinder fuel and double injection | |
| CN1312392C (en) | Low emission combustion system of flexible fuel engine | |
| CN100497927C (en) | Mixed fuel oil injector used for diesel oil and dimethyl ether | |
| CN201106506Y (en) | Waterworks in jar of four-stroke petrol engine | |
| CN208564747U (en) | Petrol engine suitable for medium and heavy vehicle | |
| CN110107418A (en) | Double fuel bump combustion chamber system | |
| CN204900127U (en) | Automobile fuel provides device | |
| CN204357607U (en) | Vehicle gasoline engine fuel oil ultrasonic atomizatio fueling injection equipment | |
| CN1470758A (en) | Dimethyl ether engine efficient, ultra-low emission combustion system |
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 |
Granted publication date: 20121121 Termination date: 20150228 |
|
| EXPY | Termination of patent right or utility model |