CN103321761A - Ethanol-diesel double-direct-injection engine - Google Patents
Ethanol-diesel double-direct-injection engine Download PDFInfo
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- CN103321761A CN103321761A CN2013102646803A CN201310264680A CN103321761A CN 103321761 A CN103321761 A CN 103321761A CN 2013102646803 A CN2013102646803 A CN 2013102646803A CN 201310264680 A CN201310264680 A CN 201310264680A CN 103321761 A CN103321761 A CN 103321761A
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Abstract
The invention discloses an ethanol-diesel double-direct-injection engine, and relates to the field of engines. The ethanol-diesel double-direct-injection engine mainly comprises a diesel supply system, an ethanol supply system, a crankshaft position and speed sensor, a knock sensor, an engine computer, a storage battery, a power generator and a starter. The ethanol-diesel double-direct-injection engine has the advantages that the ethanol-diesel double-direct-injection engine can be a single-cylinder engine or a multi-cylinder engine, an air cooling or water cooling mode can be adopted, a main body of the engine is similar to a diesel engine, and the engine can work under the condition that diesel is used as single fuel, and also can work under the condition that both ethanol and the diesel are used as fuel; the ethanol is directly injected into cylinders of the engine via the ethanol supply system while the diesel is directly injected into the cylinders of the engine via the diesel supply system, and the diesel is ignited in a compression manner and then ignites the ethanol, so that a procedure that the ethanol is combusted in the diesel engine can be improved, and a mode of applying the ethanol into the diesel engine is improved.
Description
Technical field
The present invention relates to engine art, specifically the two direct fuel-injection engines of a kind of Ethanol-diesel.
Background technique
The diesel fuel Economy is high, reliable operation, Power coverage scope are wide, except automobile-used, also is widely used in engineering machinery, farm machinery, ship power, military vehicle and the locomotive.In current biomass energy, optimal alternative fuel for diesel engine is exactly vegetable oil (or biodiesel) and alcohol fuel.Because ethanol is volatile, easily forms inflammable mixture, be beneficial to fast fully burning; Ethanol contains oxygen, burns more abundant, can suppress Soot Formation, accelerates oxidize soot; The ethanol latent heat of vaporization is large, is conducive to reduce the burning maximum temperature, reduces NO
xDischarge amount, thereby the application of ethanol in diesel engine attracted the researcher more and more to pay close attention to.
The main application mode of current ethanol in diesel engine has three kinds of spray outside blending, the cylinder, in-cylinder direct injections.The maximum advantage of ethanol blending burning is exactly not need fuel system for diesel engine is done any change, but need to be difficult for catching fire in the face of the ethanol cetane number is low, low and the poor stability of flash-point, the difficult problem such as particularly be difficult to dissolve each other with diesel oil so that the fuel combination low-temperature stability is poor.The outer premix of cylinder, at intake manifold injection ethanol, can can improve effective thermal efficiency rapidly to change the burning of substitution rate and premixed charge with the regulating working conditions emitted dose, but face atomization badness in the intake duct and sedimentation of fuel occurs, valve is folded a small amount of ethanol emission when opening scavenging, easily produce quick-fried shaking when substitution rate increases, the combustion process cyclical variations increase, degradation situation under the motor charging efficiency.
Preparation process and fringe cost that in-cylinder direct injection has been avoided that ethanol and diesel oil are formed and stablized fuel blend; Can accurately control the alcohol amount that enters in the cylinder, having changed can only be with the pattern of fixed mixing ratio fuel blend work; A small amount of ethanol emission when having avoided occurring because of atomization badness in the intake duct that sedimentation of fuel and valve are folded opens scavenging, power character and the thermal efficiency are higher.
Summary of the invention
Purpose of the present invention proposes the two direct fuel-injection engines of a kind of Ethanol-diesel, ethanol and diesel oil directly spray in the cylinder through separately oil supply system respectively, the diesel oil ethanol that ignites behind compression ignite improves the combustion process of ethanol in diesel engine, improves the application mode of ethanol in diesel engine.
Technological scheme of the present invention is: the two direct fuel-injection engines of a kind of Ethanol-diesel can be that single cylinder engine also can be multi-cylinder engine, can adopt air-cooled or water-cooled, and main body is similar to diesel engine, can be take diesel oil as single fuel operation.Two kinds of fuel of ethanol and diesel oil directly spray in the cylinder by oil supply system separately, the High Temperature High Pressure that produces in the cylinder in the compression process is so that the diesel oil spontaneous combustion, and the diesel oil ignited ethanol mixed gas after catching fire discharges heat energy, thereby to the piston acting, realize with ethanol and two kinds of fuel works of diesel oil.Its critical piece comprises: diesel oil oil supply system, ethanol oil supply system, crank position and speed probe, quick-fried vibration sensor, engine computer, storage battery, generator, Starter.
Described diesel oil oil supply system mainly comprises diesel fuel tanks, diesel oil transport pipe, diesel-oil filter, diesel oil transfer pump, diesel fuel injection pump, electronic speed regulator, high-pressure oil pipe, diesel oil injection nozzle, diesel oil return tube.
Described ethanol oil supply system comprises that mainly ethanol fuel tank, ethanol transport pipe, ethanol filter cleaner, ethanol oil transfer pump, ethanol high-pressure service pump, ethanol high pressure hold oil pipe, ethanol injector.
Described diesel oil transfer pump, electronic speed regulator, ethanol oil transfer pump, ethanol high-pressure service pump, ethanol injector, crank position and speed probe, quick-fried vibration sensor, engine computer, generator, Starter adopt with storage battery and are electrically connected.
Described crank position and speed probe are used for measuring engine crankshaft corner position and engine speed, and test signal is passed to engine computer by circuit.
Whether described quick-fried vibration sensor by measuring the perception of motor fuselage shaking situation quick-fried shaking occurs, and signal is passed to engine computer by circuit.
Described engine computer is known real-time engine speed, each cylinder working stroke of living in and crank angle by crank position and speed probe, whether the burning of knowing the ethanol mixed gas by quick-fried vibration sensor quick-fried shaking occurs, behind comprehensive each signal, send diesel oil fuel injection quantity regulated signal to electronic speed regulator, send oil spout duration control signal to ethanol injector.
Described accumulators store electric energy, and provide electric energy to Starter, diesel oil transfer pump, ethanol oil transfer pump, electronic speed regulator, ethanol high-pressure service pump, engine computer, each sensor and engine accessory consumer.
Described generator is connected with engine mechanical, by engine-driving, is used for to charge in batteries.
Described Starter is used for ato unit, and power is provided by storage battery.
The invention has the beneficial effects as follows, can with diesel oil as single fuel operation, also can work with the Ethanol-diesel double fuel.During the two straight spray work of Ethanol-diesel, can reduce the consumption of diesel oil, suppress Soot Formation, reduce NO
xDischarging.With respect to the ethanol blending, preparation process and the fringe cost having avoided that ethanol and diesel oil are formed and stablize fuel blend; Can accurately control the alcohol amount that enters in the cylinder, having changed can only be with the pattern of fixed mixing ratio fuel blend work; With respect to the outer spray of cylinder, avoided sedimentation of fuel occurring and valve is folded when opening scavenging a small amount of ethanol emission because of atomization badness in the intake duct.
Description of drawings
Fig. 1 is the two direct fuel-injection engine schematic diagram of Ethanol-diesel of the present invention.
1. ethanol fuel tanks among the figure, 2. ethanol filter cleaner, 3. ethanol oil transfer pump, 4. ethanol transport pipe, 5. ethanol high-pressure service pump, 6. engine computer, 7. generator, 8. crank position and speed probe, 9. quick-fried vibration sensor, 10. Starter, 11. storage battery, 12. diesel-oil filter, 13. diesel oil transfer pumps, 14. diesel oil transport pipe, 15. electronic speed regulator, 16. diesel fuel injection pump, 17. diesel oil tanks, 18. diesel oil return tubes, 19. high-pressure oil pipe, 20. diesel oil injection nozzle, 21. ethanol injector, 22. ethanol high pressure hold oil pipe.
Embodiment
The two direct fuel-injection engines (shown in Figure 1) of a kind of Ethanol-diesel, comprise ethanol fuel tank (1), ethanol filter cleaner (2), ethanol oil transfer pump (3), ethanol transport pipe (4), ethanol high-pressure service pump (5), the ethanol high pressure holds oil pipe (22), ethanol injector (21), diesel oil tank (17), diesel-oil filter (12), diesel oil transfer pump (13), diesel oil transport pipe (14), diesel fuel injection pump (16), electronic speed regulator (15), high-pressure oil pipe (19), diesel oil injection nozzle (20), diesel oil return tube (18), engine computer (6), generator (7), crank position and speed probe (8), quick-fried vibration sensor (9), Starter (10), storage battery (11).
By the electric energy that Starter (10) relies on storage battery (11) to provide, ato unit.Be stored in diesel oil in the diesel oil tank (17) after diesel-oil filter (12) filtering, under the effect of diesel oil transfer pump (13), supply with diesel fuel injection pump (16) through diesel oil transport pipe (14), diesel fuel injection pump (16) makes diesel oil pressure raise under engine-driving, pump into high-pressure oil pipe (19), and directly spray in the cylinder through diesel oil injection nozzle (20), under the effect of High Temperature High Pressure, diesel oil is ignition voluntarily in cylinder.Be stored in the ethanol in the ethanol fuel tank (1), after ethanol filter cleaner (2) filtering, under the effect of ethanol oil transfer pump (3), supply with ethanol high-pressure service pump (5) through ethanol transport pipe (4), ethanol high-pressure service pump (5) makes ethanol pressure raise under electric drive, pump into the ethanol high pressure and hold oil pipe (22), directly spray in the cylinder diesel oil ignited by after catching fire through ethanol injector (21).
Crank position and speed probe (8), quick-fried vibration sensor (9) are sent to engine computer (6) with test signal, signal is processed backward electronic speed regulator (15) to engine computer (6) and ethanol injector (21) provides control command, change every circulation diesel oil fuel injection quantity by electronic speed regulator (15), adjust every circulation ethanol emitted dose by the injection duration of ethanol injector (21).
Generator (7) is used for charging to storage battery (11) by engine-driving.
Claims (3)
1. two direct fuel-injection engines of an Ethanol-diesel, comprise: diesel oil oil supply system, ethanol oil supply system, crank position and speed probe (8), quick-fried vibration sensor (9), engine computer (6), storage battery (11), generator (7), Starter (10), it is characterized in that: ethanol is through the ethanol oil supply system, diesel oil all directly sprays in the cylinder through the diesel oil oil supply system, the diesel oil ethanol that ignites behind compression ignite.
2. two direct fuel-injection engines of a kind of Ethanol-diesel according to claim 1, it is characterized in that: described ethanol oil supply system comprises ethanol fuel tank (1), ethanol filter cleaner (2), ethanol oil transfer pump (3), ethanol transport pipe (4), ethanol high-pressure service pump (5), the ethanol high pressure holds oil pipe (22), ethanol injector (21).
3. two direct fuel-injection engines of a kind of Ethanol-diesel according to claim 1, it is characterized in that: described diesel oil transfer pump (13), electronic speed regulator (15), ethanol oil transfer pump (3), ethanol high-pressure service pump (5), ethanol injector (21), crank position and speed probe (8), quick-fried vibration sensor (9), engine computer (6), generator (7), Starter (10) are electrically connected with storage battery (11) employing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102646803A CN103321761A (en) | 2013-06-28 | 2013-06-28 | Ethanol-diesel double-direct-injection engine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102646803A CN103321761A (en) | 2013-06-28 | 2013-06-28 | Ethanol-diesel double-direct-injection engine |
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| CN103321761A true CN103321761A (en) | 2013-09-25 |
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| CN2013102646803A Pending CN103321761A (en) | 2013-06-28 | 2013-06-28 | Ethanol-diesel double-direct-injection engine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104454190A (en) * | 2014-11-04 | 2015-03-25 | 吉林大学 | Intra-cylinder direct injection double gas fuel ignition type combustion and control device |
| CN105114193A (en) * | 2015-07-30 | 2015-12-02 | 太原理工大学 | Fuel feed method of methanol/diesel dual-fuel diesel engine |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1401053A (en) * | 2000-02-11 | 2003-03-05 | 韦斯特波特研究公司 | Method and apparatus for dual fuel injection into an internal combustion engine |
| CN101975118A (en) * | 2010-11-18 | 2011-02-16 | 天津大学 | Method and device for controlling emission of passenger car engine based on double jetting of fuels in cylinder |
| CN102011645A (en) * | 2010-11-04 | 2011-04-13 | 金来兴 | Reciprocating piston type engine capable of doing work by multi-medium vaporization mixed combustion |
| CN102791991A (en) * | 2009-11-23 | 2012-11-21 | 乙醇推动系统有限责任公司 | Fuel tank system for gasoline and flexible ethanol powered vehicles using on-demand direct ethanol injection octane boost |
| CN203321684U (en) * | 2013-06-28 | 2013-12-04 | 贵阳学院 | Ethyl alcohol and diesel oil double direct-injection engine |
-
2013
- 2013-06-28 CN CN2013102646803A patent/CN103321761A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1401053A (en) * | 2000-02-11 | 2003-03-05 | 韦斯特波特研究公司 | Method and apparatus for dual fuel injection into an internal combustion engine |
| CN102791991A (en) * | 2009-11-23 | 2012-11-21 | 乙醇推动系统有限责任公司 | Fuel tank system for gasoline and flexible ethanol powered vehicles using on-demand direct ethanol injection octane boost |
| CN102011645A (en) * | 2010-11-04 | 2011-04-13 | 金来兴 | Reciprocating piston type engine capable of doing work by multi-medium vaporization mixed combustion |
| CN101975118A (en) * | 2010-11-18 | 2011-02-16 | 天津大学 | Method and device for controlling emission of passenger car engine based on double jetting of fuels in cylinder |
| CN203321684U (en) * | 2013-06-28 | 2013-12-04 | 贵阳学院 | Ethyl alcohol and diesel oil double direct-injection engine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104454190A (en) * | 2014-11-04 | 2015-03-25 | 吉林大学 | Intra-cylinder direct injection double gas fuel ignition type combustion and control device |
| CN105114193A (en) * | 2015-07-30 | 2015-12-02 | 太原理工大学 | Fuel feed method of methanol/diesel dual-fuel diesel engine |
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Application publication date: 20130925 |