CN201574834U - Fuel field mixed ignition internal-combustion engine - Google Patents
Fuel field mixed ignition internal-combustion engine Download PDFInfo
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- CN201574834U CN201574834U CN2009202227067U CN200920222706U CN201574834U CN 201574834 U CN201574834 U CN 201574834U CN 2009202227067 U CN2009202227067 U CN 2009202227067U CN 200920222706 U CN200920222706 U CN 200920222706U CN 201574834 U CN201574834 U CN 201574834U
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- fuel
- combustion engine
- cetane
- antiknock gasoline
- nozzle
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Abstract
The utility model provides a fuel field mixed ignition internal-combustion engine, in particular to the fuel preparation, supply and control of the combustion engine. The internal combustion engine of the utility model increases a set of high-cetane and high-octane fuel supply and control system which comprises a mixed fuel electronic control unit (8), a high-octane fuel cell (9), a high-octane fuel pressure regulator (10), a high-octane fuel nozzle (13), a high-cetane fuel nozzle (14), a high-cetane fuel pressure regulator (17) and a high-cetane fuel cell (18). The utility model prevents the misfire during cold start when traditional single fuel spark-ignition engine, improves the idle speed and raises the middle-high speed of the internal-combustion engine, and realize the target of all-condition energy-saving and emission-reduction of the internal-combustion engine.
Description
Technical field
The utility model provides a kind of fuel on-site mixing ignition internal-combustion engine.
Background technique
Since the seventies in 20th century, along with electronic technology and exhaust aftertreatment broad application, the oil consumption and the hazardous emission of internal-combustion engine are reduced significantly.Traditional petrol engine belongs to the premix homogeneous combustion, owing to be subjected to all multifactor restrictions such as pinking, compression ratio is low, and the thermal efficiency is low, adopts electronic control and exhaust gas post-treatment device can make petrol engine reach extremely low discharging.Compare with petrol engine, diesel engine compression ratio height has the higher thermal efficiency and superior fuel economy, and still, the burning of conventional diesel engine is the diffusive combustion of injected fuel spray, and the high temperature when relying on internal combustion engine to be compressed near terminal point makes the mixed gas involuntary ignition.Because spraying is very short with the mixed time of air, it is seriously inhomogeneous that fuel and air mix, and forms high temperature rich mixture district and hot flame district, causes soot and NO
XThe a large amount of generation, employing Electrocontrolled high-pressure common rail and repeatedly oil spout technology are also attached can to make diesel engine reach very low discharging with exhaust gas aftertreatment techniques, but cost is higher.Another kind is subjected to the burning form of extensive concern, and the high compression ratio of diesel engine and the premixing of petrol engine homogeneous are combined, and has formed homogeneous premixing ignition engine, and high compression ratio realizes high thermal efficiency, and the homogeneous premixing realizes low emission.This internal-combustion engine is at the mixed gas of intake process formation homogeneous, and homogeneous charge is realized the multiple spot involuntary ignition in the time of near being compressed to top dead center.Owing to adopt the weak mixture homogeneous to burn simultaneously, there is not localized hyperthermia's reaction zone of spark ignition and diffusive combustion, make NO
XVery low with the PM discharging, and have the higher thermal efficiency.Boundary conditions and chemistry of fuel Collaborative Control but this combustion manner is burnt do not have the spark ignition of petrol engine and the cylinder-in oil-jet of diesel engine to control ignition timing, therefore, ignition timing is restive, low-load easily catches fire, the easy pinking of high load, and operating conditions is narrower.
The model utility content
The purpose of this utility model is for realizing the flexible control of spark-ignition internal combustion engine fuel octane number, improving the engine starting performance, reduce oil consumption and discharging.
The utility model has adopted following technological scheme: a kind of fuel on-site mixing ignition internal-combustion engine comprises that traditional automatically controlled spark-ignition internal combustion engine is used to move CAP sensor, cooling-water temperature sensor, intake air temperature sensor, air inlet pressure sensor, throttle position sensor, detonation sensor, linear oxygen sensors, ignition module, spark plug, electronic throttle, intake lines of combustion engines, internal combustion engine, cylinder of internal-combustion engine, the internal-combustion engine vent-pipe of control;
It is characterized in that: increased a cover high cetane number and antiknock gasoline and supplied with and control system, this system comprises fuel combination electronic control unit, antiknock gasoline case, antiknock gasoline pressure regulator, antiknock gasoline nozzle, high-cetane fuel nozzle, high-cetane fuel pressure regulator, high-cetane fuel case;
CAP sensor, cooling-water temperature sensor, intake air temperature sensor, air inlet pressure sensor, throttle position sensor, detonation sensor, linear oxygen sensors link to each other with the fuel combination electronic control unit by cable; The fuel combination electronic control unit connects spark plug by ignition module; The fuel combination electronic control unit connects electronic throttle respectively by cable, antiknock gasoline nozzle, high-cetane fuel nozzle; Antiknock gasoline case, antiknock gasoline pressure regulator and antiknock gasoline nozzle are connected successively by Stainless Steel Tube or pressure hose, and the antiknock gasoline nozzle is connected on the intake lines of combustion engines; High-cetane fuel case, high-cetane fuel pressure regulator and high-cetane fuel nozzle are connected successively by Stainless Steel Tube or pressure hose, and the high-cetane fuel nozzle is connected on the intake lines of combustion engines.
Described antiknock gasoline is gasoline or methyl alcohol or ethanol or liquefied petroleum gas (LPG) or rock gas or hydrogen.Described high-cetane fuel is dimethyl ether or any volatile high-cetane fuel.Described fuel combination electronic control unit receives the air fuel ratio signal of linear oxygen sensors, when the air excess factor of actual measurement departs from calibration value 5% when above, every circulation of promptly adopting pid algorithm to regulate high-cetane fuel nozzle and antiknock gasoline nozzle sprays into the closed loop control of the fuel mass realization of cylinder to each operating mode air excess factor.Described internal-combustion engine is for having closure, spark-ignition internal combustion engine, and the compression ratio of internal-combustion engine scope is between the 7-15.
Working procedure of the present utility model: engine starting, mixed fuel electric-control unit receives the CAP sensor, the signal of cooling-water temperature sensor and throttle position sensor determines that motor is a state of starting operating, control high-cetane fuel nozzle and antiknock gasoline nozzle spray high cetane number and antiknock gasoline simultaneously, in order to ensure ignited fuel, adopt state of starting operating fuel mixture ratio α=0.1-1 according to different cooling water temperatures, air excess factor=0.4-1, firing angle β=6 °.Along with improving constantly of cooling water temperature, fuel mixture ratio α and air excess factor are according to the operating mode dynamic change, until entering the idling steady state.Idling operation, the fuel combination electronic control unit receives the corner signal of CAP sensor, the cooling water temperature signal of cooling-water temperature sensor, the throttle position signal of throttle position sensor, the air fuel ratio signal of linear oxygen sensors, control high-cetane fuel nozzle and antiknock gasoline nozzle spray high cetane number and antiknock gasoline simultaneously, send the Electronic Throttle Control signal, by adjusting the aperture of electronic throttle, fuel mixture ratio α and firing angle β realize stable idle of internal-combustion engine, fuel mixture ratio α=0.1-0.3, air excess factor=1, firing angle β=0-6 °.Sub load and full load mode, the fuel combination electronic control unit receives the corner signal of CAP sensor, the cooling water temperature signal of cooling-water temperature sensor, the intake air temperature signals of intake air temperature sensor, the suction pressure signal of air inlet pressure sensor, the throttle position signal of throttle position sensor, the combustion pressure signal of detonation sensor, the air fuel ratio signal of linear oxygen sensors, control high-cetane fuel nozzle and antiknock gasoline nozzle spray high cetane number and antiknock gasoline simultaneously, send the Electronic Throttle Control signal, by adjusting the aperture of electronic throttle, fuel mixture ratio α and firing angle β realize the sub load and the full load operation of internal-combustion engine, fuel mixture ratio α=0-0.3, air excess factor=1, firing angle β=6-30 °.
The beneficial effects of the utility model are that the deficiency at the conventional point internal combustion engine exists proposes a kind of fuel on-site mixing ignition internal-combustion engine and controlling method.Ignition engine of the present utility model adopts flexible fuel, adjust the proportioning of high-octane rating and high-cetane fuel in real time according to the operating mode of internal-combustion engine, mix at the scene of high-octane rating and high-cetane fuel of realizing, satisfies ignition engine in the requirement of full operating mode to fuel octane number.
Description of drawings
Fig. 1 structure of the present utility model and fundamental diagram
1 CAP sensor among the figure; 2 cooling-water temperature sensors; 3 intake air temperature sensor; 4 air inlet pressure sensors; 5 throttle position sensor; 6 detonation sensor; 7 linear oxygen sensors; 8 fuel combination electronic control units; 9 antiknock gasoline casees; 10 antiknock gasoline pressure regulators; 11 ignition modules; 12 spark plugs; 13 antiknock gasoline nozzles; 14 high-cetane fuel nozzles; 15 electronic throttles; 16 intake lines of combustion engines; 17 high-cetane fuel pressure regulators; 18 high-cetane fuel casees; 19 internal combustion engines; 20 cylinder of internal-combustion engine; 21 internal-combustion engine vent-pipes.Mixed fuel ignition control signal a; Antiknock gasoline injection signal b; High-cetane fuel injection signal c; Electronic Throttle Control signal d.
Embodiment
A kind of fuel on-site mixing ignition internal-combustion engine comprises that traditional automatically controlled spark-ignition internal combustion engine is used to move the CAP sensor 1 of control, cooling-water temperature sensor 2, intake air temperature sensor 3, air inlet pressure sensor 4, throttle position sensor 5, detonation sensor 6, linear oxygen sensors 7, ignition module 11, spark plug 12, electronic throttle 15, intake lines of combustion engines 16, internal combustion engine 19, cylinder of internal-combustion engine 20, internal-combustion engine vent-pipe 21; It is characterized in that:
Increased a cover high cetane number and antiknock gasoline and supplied with and control system, this system comprises fuel combination electronic control unit 8, antiknock gasoline case 9, antiknock gasoline pressure regulator 10, antiknock gasoline nozzle 13, high-cetane fuel nozzle 14, high-cetane fuel pressure regulator 17, high-cetane fuel case 18;
CAP sensor 1, cooling-water temperature sensor 2, intake air temperature sensor 3, air inlet pressure sensor 4, throttle position sensor 5, detonation sensor 6, linear oxygen sensors 7 link to each other with fuel combination electronic control unit 8 by cable; Fuel combination electronic control unit 8 connects spark plug 12 by ignition module 11; Fuel combination electronic control unit 8 connects electronic throttle 15 respectively by cable, antiknock gasoline nozzle 13, and high-cetane fuel nozzle 14 sprays high-cetane fuel; Antiknock gasoline case 9, antiknock gasoline pressure regulator 10 and antiknock gasoline nozzle 13 are connected successively by Stainless Steel Tube or pressure hose, and antiknock gasoline nozzle 13 is connected on the intake lines of combustion engines 16; High-cetane fuel case 18, high-cetane fuel pressure regulator 17 and high-cetane fuel nozzle 14 are connected successively by Stainless Steel Tube or pressure hose, and high-cetane fuel nozzle 14 is connected on the intake lines of combustion engines 16.
Present embodiment has been done following experiment to various operating modes:
The experiment internal-combustion engine is 1 array, 4 cylinder 1.6L electronic injection gasoline engines, by high cetane number and the on-the-spot mixing ignition formula of the antiknock gasoline internal-combustion engine of being transformed into shown in Figure 1.The high-cetane fuel that experiment is selected for use is dimethyl ether (C
2H
6O), antiknock gasoline is propane (C
3H
8).With the Horiba-7100DEGR emission analyzer that a Japanese hole field Co., Ltd. produces, measure HC, CO and NO under each operating conditions of internal-combustion engine respectively
xDischarging.
1) starting experiment
Fuel combination ECU (Electrical Control Unit) 8 is according to cooling water temperature T
wDetermine the proportions of ingredients of high cetane number and antiknock gasoline.ECU (Electrical Control Unit) 8 drives antiknock gasoline nozzles 13 and with the fuel injection quantity of 0.007g/cycle antiknock gasoline and high-cetane fuel is sprayed into intake duct simultaneously with the fuel injection quantity of 0.012g/cycle and high-cetane fuel nozzle 14, firing angle β=6 of adopting this moment °.
Experimental result shows, is 18 ℃ at cooling water temperature, and by above antiknock gasoline and high-cetane fuel emitted dose, the internal combustion function is started smoothly, and the Horiba-7100DEGR emission analyzer records the HC discharging and is 532ppm, and the CO discharging is 0.62%, NO
xDischarging is 21ppm.And employing single-fuel isooctane (C
8H
18) the HC discharging of lighting is 1329ppm, the CO discharging is 1.08%, NO
xDischarging is 34ppm.Reason is to make the octane value (RON) of fuel combination be reduced to about 84 by propane and the on-the-spot mixing of dimethyl ether to be lower than 100 of single-fuel isooctane, and the fire behaviour of fuel improves greatly, and starting is burnt rapidly easily, and effulent obtains bigger reduction.
2) idling experiment n=800rpm, T
w=85 ℃, throttle opening 0%)
ECU (Electrical Control Unit) 8 drives antiknock gasoline nozzles 13 and with the fuel injection quantity of 0.003g/cycle antiknock gasoline and high-cetane fuel is sprayed into intake duct simultaneously with the fuel injection quantity of 0.014g/cycle and high-cetane fuel nozzle 14, firing angle β=3 of adopting this moment °.Stable in order to ensure idling, should adopt the mixed gas dense than sub load.
Experimental result shows, is 85 ℃ at cooling water temperature, by above antiknock gasoline and high-cetane fuel emitted dose, idling for internal combustion engine can be stabilized in 800 ± 5rpm, the Horiba-7100DEGR emission analyzer records the HC discharging and is 421ppm, and the CO discharging is 0.6%, and the NOx discharging is 97ppm.And employing single-fuel isooctane (C
8H
18) the HC discharging of lighting is 687ppm, the CO discharging is 0.76%, NO
xDischarging is 182ppm.Reason is to make the octane value (RON) of fuel combination be reduced to about 90 by propane and the on-the-spot mixing of dimethyl ether to be lower than 100 of single-fuel isooctane, vaporized fuel propane and dimethyl ether are easier to and Air mixing than the liquid fuel isooctane under higher cooling water temperature, mixed gas is rarer, burning is more complete, and effulent is further reduced.
3) moderate duty experiment n=2000rpm, T
w=90 ℃, throttle opening 35%
ECU (Electrical Control Unit) 8 drives antiknock gasoline nozzles 13 and with the fuel injection quantity of 0.001g/cycle antiknock gasoline and high-cetane fuel is sprayed into intake duct simultaneously with the fuel injection quantity of 0.018g/cycle and high-cetane fuel nozzle 14, firing angle β=18 of adopting this moment °.
Experimental result shows that at internal-combustion engine rotational speed 2000rpm, cooling water temperature is 90 ℃, throttle opening 35%, by above antiknock gasoline and high-cetane fuel emitted dose, the Horiba-7100DEGR emission analyzer records the HC discharging and is 234ppm, the CO discharging is 0.45%, NO
xDischarging is 464ppm.And employing single-fuel isooctane (C
8H
18) the HC discharging of lighting is 423ppm, the CO discharging is 0.51%, NO
xDischarging is 392ppm.Reason is by propane and on-the-spot mixing of dimethyl ether making the octane value (RON) of fuel combination be reduced to about 95, but vaporized fuel propane and dimethyl ether are easier to and Air mixing than the liquid fuel isooctane under higher cooling water temperature, mixed gas can be rarer, burning is more complete, HC and CO effulent are further reduced, but NO
xDischarging increases, and reason is to burn more fully, causes cylinder temperature to improve.
4) big load experiment n=3000rpm, T
w=90 ℃, throttle opening 75%)
ECU (Electrical Control Unit) 1 drives antiknock gasoline nozzle 13 and with the fuel injection quantity of 0.025g/cycle antiknock gasoline is sprayed into intake duct, firing angle β=26 of adopting this moment °.
Experimental result shows that at internal-combustion engine rotational speed 3000rpm, cooling water temperature is 90 ℃, throttle opening 75%, and by above antiknock gasoline emitted dose, power of IC engine is 72.2Kw, and former petrol engine is 75.3Kw.The Horiba-7100DEGR emission analyzer records the HC discharging and is 121ppm, and the CO discharging is 0.26%, NO
xDischarging is 521ppm.And employing single-fuel isooctane (C
8H
18) HC discharging be 254ppm, the CO discharging is 0.34%, NO
xDischarging is 339ppm.Reason is that propane makes the octane value (RON) of fuel be elevated to about 130 greater than 100 of single-fuel isooctane, makes the antiknock ability of antiknock gasoline far above isooctane, internal-combustion engine can be under higher rotation speed and load stable operation, pinking can not take place.But higher cooling water temperature and load make velocity of combustion faster, and HC and CO effulent further reduce, but NO
xDischarging is improved a lot, and reason is that mixed gas is denseer and burning is more complete, causes cylinder temperature higher.
Above-mentioned internal combustion engine bench test result shows, the fuel on-site mixing ignition internal-combustion engine that adopts the utility model to provide can be realized low emission at broad rotating speed and load range, and the big load power of this internal-combustion engine is near the level of former machine.This technology will provide an otherwise effective technique approach for Vehicular internal combustion engine reaches Europe 4 above emission standards.
Claims (1)
1. a fuel on-site mixing ignition internal-combustion engine comprises that traditional automatically controlled spark-ignition internal combustion engine is used to move the CAP sensor (1) of control, cooling-water temperature sensor (2), intake air temperature sensor (3), air inlet pressure sensor (4), throttle position sensor (5), detonation sensor (6), linear oxygen sensors (7), ignition module (11), spark plug (12), electronic throttle (15), intake lines of combustion engines (16), internal combustion engine (19), cylinder of internal-combustion engine (20), internal-combustion engine vent-pipe (21); It is characterized in that:
Increased a cover high cetane number and antiknock gasoline and supplied with and control system, this system comprises fuel combination electronic control unit (8), antiknock gasoline case (9), antiknock gasoline pressure regulator (10), antiknock gasoline nozzle (13), high-cetane fuel nozzle (14), high-cetane fuel pressure regulator (17), high-cetane fuel case (18);
CAP sensor (1), cooling-water temperature sensor (2), intake air temperature sensor (3), air inlet pressure sensor (4), throttle position sensor (5), detonation sensor (6), linear oxygen sensors (7) link to each other with fuel combination electronic control unit (8) by cable; Fuel combination electronic control unit (8) connects spark plug (12) by ignition module (11); Fuel combination electronic control unit (8) connects electronic throttle (15) respectively by cable, antiknock gasoline nozzle (13), high-cetane fuel nozzle (14); Antiknock gasoline case (9), antiknock gasoline pressure regulator (10) and antiknock gasoline nozzle (13) are connected successively by Stainless Steel Tube or pressure hose, and antiknock gasoline nozzle (13) is connected on the intake lines of combustion engines (16); High-cetane fuel case (18), high-cetane fuel pressure regulator (17) and high-cetane fuel nozzle (14) are connected successively by Stainless Steel Tube or pressure hose, and high-cetane fuel nozzle (14) is connected on the intake lines of combustion engines (16).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202227067U CN201574834U (en) | 2009-09-11 | 2009-09-11 | Fuel field mixed ignition internal-combustion engine |
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| CN2009202227067U CN201574834U (en) | 2009-09-11 | 2009-09-11 | Fuel field mixed ignition internal-combustion engine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101649785B (en) * | 2009-09-11 | 2012-08-15 | 北京工业大学 | Internal combustion engine with fuels being mixed and ignited on the spot and control method thereof |
-
2009
- 2009-09-11 CN CN2009202227067U patent/CN201574834U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101649785B (en) * | 2009-09-11 | 2012-08-15 | 北京工业大学 | Internal combustion engine with fuels being mixed and ignited on the spot and control method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100908 Termination date: 20120911 |