CN106089466A - A kind of method realizing fuel injector injection control strategy - Google Patents
A kind of method realizing fuel injector injection control strategy Download PDFInfo
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- CN106089466A CN106089466A CN201610716433.6A CN201610716433A CN106089466A CN 106089466 A CN106089466 A CN 106089466A CN 201610716433 A CN201610716433 A CN 201610716433A CN 106089466 A CN106089466 A CN 106089466A
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- fuel injector
- oil
- oil spout
- main jet
- electromagnetic
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/30—Controlling fuel injection
- F02D41/38—Controlling fuel injection of the high pressure type
Abstract
The present invention relates to one and realize fuel injector injection control strategy method, the method is: in engine operation process, ECU controls fuel injector pre-oil spout electromagnetic switch, oil spout electromagnetic switch after fuel injector, fuel injector main jet electromagnetic oil switches on-off, thus fuel injector pre-oil spout electric magnet, oil spout electric magnet after fuel injector, fuel injector main jet electromagnetic oil Tie Tong electricity, change fuel injector pre-oil spout electric magnet, oil spout electric magnet after fuel injector, the magnetic of fuel injector main jet electromagnetic oil ferrum, under the effect of electromagnetic force, the pre-Fuel Injector Bar of fuel injector, Fuel Injector Bar after fuel injector, fuel injector main jet beam hanger moves upward, realize pilot injection, rear injection, main injection.Present invention achieves fuel injector the most precisely to spray, combustion phase and ignition temperature can be controlled, it is achieved fuel oil fully burns, improve thermal technology's transformation efficiency in cylinder, improve the utilization rate of fuel oil energy, realize cleaning burning in cylinder simultaneously, reduce the generation of pollutant, it is achieved energy-saving and emission-reduction.
Description
Technical field
A kind of method that the present invention relates to direct spray petrol engine in cylinder fuel injector fuel injection control strategy, particularly relates to a kind of realization
The method of fuel injector injection control strategy.
Background technology
State Council issues " planning ", specify that the overall goals of China's vehicle energy saving standard, it is desirable to the year two thousand twenty is the most riding
Car new car average fuel consumption reaches 5.0L/100km；Along with internal combustion engine energy-saving and emission-reduction are goed deep into by country, to internal combustion engine
Oil consumption economy is had higher requirement with discharge performance, and the energy-conservation of internal combustion engine will be from Sources controlling with reduction of discharging, i.e. from starting
The Combustion System of machine core controls, and realizes cleaning burning and generates with low emissions；And the control of combustion phase is to fuel injector
Control strategy, spray regime has a tightened up requirement, uses multi-injection i.e. to use the controlling parties such as pre-spray, main jet, rear spray
Formula, it is achieved fuel injector the most precisely sprays, is precisely controlled；Improve expulsion pressure, improve oil spout penetration distance, refine oil spout
Grain, strengthens oil atomizing effect, it is achieved oil spout microgranule uniformly mixes with the optimal of fresh air；Transport to top dead centre at cylinder inner carrier
During row, using the mode that fuel oil sprays in advance, a small amount of fuel oil is mixed homogeneously with air, and gaseous mixture tissue is good, reduces cylinder temperature, from
And control ignition temperature, and beneficially piston igniting, promote flame to propagate, improve flame propagation velocity；Use fuel oil main jet
Mode, major control combustion phase, control maximum explosive pressure and the rate of pressure rise, make maximum explosive pressure After Top Center
Between 10-15 crank angle, it is achieved fuel oil fully burns, improve thermal technology's transformation efficiency in cylinder, improve the thermal efficiency of gasoline engine, carry
The utilization rate of high fuel oil energy, realizes cleaning burning in cylinder simultaneously；The mode sprayed after using fuel oil, in latter stage of burning, injection is few
Fuel oil, make burning burning in latter stage more abundant, promote microgranule and organic burning, mainly reduce the life of pollutant
Become, it is achieved the target of reduction of discharging.
The patent of Publication No. 101223350 provides a kind of fuel injection control system preventing and misfiring, and uses combustion
Material multi-injection supplies, and uses fuel injection correction amount simultaneously, also uses pilot injection, pilot injection, main injection, sprays afterwards
Penetrating, but it is complicated to control logic, corrected parameter is too much, have impact on the stability of this device；Publication No. 101578442 special
Profit provides a kind of fuel injection controller for IC engine and control method, never sprays the combustion of fuel in engine operation region
Material interruptive area transfer to spray the low-load region of a small amount of fuel or in turn time, in low-load region main injection it
Front execution pilot injection at least one times, and also to determine pilot injection according to ECT, now mainly drop
The amount of low HC；The generation of emission is not reduced from the core such as combustion phase, ignition temperature.
Summary of the invention
For overcoming in-cylinder direct-jet oil atomizing present in prior art bad, in-cylinder direct-jet discharge microgranule, combustion phase
The technical problems such as fluctuation, the invention provides a kind of method realizing fuel injector injection control strategy.
A kind of method realizing fuel injector injection control strategy, it is characterised in that: in engine operation process, ECU is controlled
After fuel injector processed pre-oil spout electromagnetic switch, fuel injector, oil spout electromagnetic switch, fuel injector main jet electromagnetic oil switch on-off, thus spray
Oil spout electric magnet after oil device pre-oil spout electric magnet, fuel injector, fuel injector main jet electromagnetic oil Tie Tong electricity, change described fuel injector and spray in advance
Oil spout electric magnet, the magnetic of described fuel injector main jet electromagnetic oil ferrum after electromagnetic oil ferrum, described fuel injector, in the effect of electromagnetic force
Under, after the pre-Fuel Injector Bar of fuel injector, fuel injector, Fuel Injector Bar, fuel injector main jet beam hanger move upward, it is achieved pilot injection, rear injection, master
Injection.
Further, described single shot injection event is: in engine operation process, during air inlet, and piston is transported to top dead centre
OK, stopping aerofluxus, postpone a period of time and close air inlet, when air inlet stops, ECU controls to open described fuel injector pre-oil spout electromagnetism
Switch, cuts out oil spout electromagnetic switch and described fuel injector main jet electromagnetic oil switch, the pre-oil spout of described fuel injector after described fuel injector
Electric magnet is energized, and the magnetic of described fuel injector pre-oil spout electric magnet is strengthened, so that the pre-Fuel Injector Bar of described fuel injector moves upward,
The fuel injector pre-Fuel Injector Bar sealed end of the pre-Fuel Injector Bar of described fuel injector is mentioned under the effect of electromagnetic force, hydraulic oil pre-oil spout branch road
Oil enter the pre-nozzle opening of hydraulic oil, thus realize pilot injection, pilot injection under ECU control program, can injection repeatedly,
Described main injection event is: running when engine piston continues up stop, ECU controls to open described fuel injector master
Oil spout electromagnetic switch, closes oil spout electromagnetic switch after described fuel injector pre-oil spout electromagnetic switch and described fuel injector, described oil spout
Device main jet electromagnetic oil Tie Tong electricity, the magnetic of described fuel injector main jet electromagnetic oil ferrum is strengthened, so that described fuel injector main jet beam hanger
Moving upward, the fuel injector main jet beam hanger sealed end of described fuel injector main jet beam hanger is mentioned under the effect of electromagnetic force, hydraulic oil
The oil of main jet oil branch road enters hydraulic oil main jet oilhole, thus realizes main injection,
Described rear course of injection is: after engine spark plug igniting, and piston runs to lower dead center, and ECU controls to open
Oil spout electromagnetic switch after described fuel injector, closes described fuel injector pre-oil spout electromagnetic switch and described fuel injector main jet electromagnetic oil is opened
Close, thus oil spout electric magnet energising after described fuel injector, after described fuel injector, the magnetic of oil spout electric magnet is strengthened, so that described
After fuel injector, Fuel Injector Bar moves upward, after described fuel injector after the fuel injector of Fuel Injector Bar Fuel Injector Bar sealed end in the effect of electromagnetic force
Under mention, after hydraulic oil, the oil of oil spout branch road enters nozzle opening after hydraulic oil, thus sprays after realizing.
Beneficial effects of the present invention:
It is an object of the present invention to realize fuel injector the most precisely spray, be precisely controlled；Improve expulsion pressure, improve oil spout and pass through
Wear distance, refine oil spout granule, strengthen oil atomizing effect, it is achieved oil spout microgranule uniformly mixes with the optimal of fresh air, promotees
Enter flame to propagate, improve flame propagation velocity；And combustion phase and ignition temperature can be controlled, control maximum explosive pressure and pressure
Rate of rise, it is achieved fuel oil fully burns, improves thermal technology's transformation efficiency in cylinder, improves the thermal efficiency of gasoline engine, improves fuel oil energy
Utilization rate, realize cleaning burning in cylinder simultaneously, reduce the generation of pollutant, it is achieved energy-saving and emission-reduction.
Accompanying drawing explanation
Fig. 1 is that the structure of the device that the present invention realizes the method for fuel injector injection control strategy is always schemed；
Fig. 2 is that in the present invention, fuel injector control strategy performs pre-Fuel Injector Bar 6 structure chart；
Fig. 3 be in the present invention fuel injector control strategy perform after Fuel Injector Bar 7 structure chart；
Fig. 4 is that in the present invention, fuel injector control strategy performs main jet beam hanger 8 structure chart；
Fig. 5 is that in the present invention, fuel injector control strategy performs bar main structure chart；
Fig. 6 is that in the present invention, fuel injector control strategy performs bar installation diagram；
Fig. 7 is that in the present invention, fuel injector control strategy performs pre-fuel injection control strategy figure；
Fig. 8 is that in the present invention, fuel injector control strategy performs main fuel injection control strategy figure；
Fig. 9 be in the present invention fuel injector control strategy perform after fuel injection control strategy figure.
Reference:
1-fuel injector end cap, 2-fuel injector Electromagnetic Control interface, 3-fuel injector pre-oil spout electromagnetic switch, 3-1 fuel injector is pre-
Oil spout electric magnet, oil spout electromagnetic switch after 4-fuel injector, oil spout electric magnet after 4-1 fuel injector, 5-fuel injector main jet electromagnetic oil is opened
Closing, 5-1 fuel injector main jet electromagnetic oil ferrum, the pre-Fuel Injector Bar of 6-fuel injector, aperture in the pre-Fuel Injector Bar of 6-1 fuel injector, 6-2 fuel injector is pre-
Fuel Injector Bar sealed end, macropore in the pre-Fuel Injector Bar of 6-3 fuel injector, Fuel Injector Bar after 7-fuel injector is little in Fuel Injector Bar after 7-1 fuel injector
Hole, Fuel Injector Bar sealed end after 7-2 fuel injector, macropore in Fuel Injector Bar after 7-3 fuel injector, 8-fuel injector main jet beam hanger, 8-1 fuel injector
Main jet beam hanger sealed end, 9-hydraulic oil nozzle opening, the pre-nozzle opening of 9-1 hydraulic oil, 9-2 hydraulic oil main jet oilhole, after 9-3 hydraulic oil
Nozzle opening, 10-oil spout oil duct branch road, oil spout branch road after 10-1 hydraulic oil, 10-2 hydraulic oil main jet oil branch road, 10-3 hydraulic oil is pre-
Oil spout branch road, 11-fuel injector fuel oil main oil gallery, 12-fuel injector fuel oil main oil gallery import, 13-fuel injector interface thread, 14-sprays
Oil device main body, 14-1 pre-oil spout rod aperture seat, oil spout rod aperture seat after 14-2,14-3 main jet beam hanger hole seat, 14-4 Fuel Injector Bar spring base,
15-fuel injector main jet beam hanger spring, Fuel Injector Bar spring after 16-fuel injector, 17-fuel injector pre-Fuel Injector Bar spring.
Detailed description of the invention
Below technical scheme is described in detail.
The present invention realizes the method for fuel injector injection control strategy: in engine operation process, and ECU controls fuel injector
After pre-oil spout electromagnetic switch, fuel injector, oil spout electromagnetic switch, fuel injector main jet electromagnetic oil switch on-off, thus fuel injector sprays in advance
Oil spout electric magnet after electromagnetic oil ferrum, fuel injector, fuel injector main jet electromagnetic oil Tie Tong electricity, change fuel injector pre-oil spout electric magnet, spray
Oil spout electric magnet, the magnetic of fuel injector main jet electromagnetic oil ferrum after oil device, under the effect of electromagnetic force, the pre-Fuel Injector Bar of fuel injector, spray
After oil device, Fuel Injector Bar, fuel injector main jet beam hanger move upward, it is achieved pilot injection, rear injection, main injection.
Below by specific embodiment, realize the above-mentioned method realizing fuel injector injection control strategy, such as Fig. 1 institute
Show, a kind of device realizing fuel injector injection control strategy in the present embodiment, including: fuel injector end cap 1, fuel injector Electromagnetic Control
Oil spout electromagnetic switch 4, fuel injector main jet electromagnetic oil switch 5, oil spout after interface 2, fuel injector pre-oil spout electromagnetic switch 3, fuel injector
Fuel Injector Bar 7, fuel injector main jet beam hanger 8, hydraulic oil nozzle opening 9, oil spout oil duct branch road 10, oil spout after the pre-Fuel Injector Bar of device 6, fuel injector
Device fuel oil main oil gallery 11, fuel injector fuel oil main oil gallery import 12, fuel injector interface thread 13, fuel injector main body 14, fuel injector master
Fuel Injector Bar spring 16, fuel injector pre-Fuel Injector Bar spring 17 after Fuel Injector Bar spring 15, fuel injector.
Fuel injector end cap 1 is threaded connection with fuel injector main body 14, and composition fuel injector is arranged on engine cylinder lid.
Fuel injector Electromagnetic Control interface 2 is positioned at a side end of fuel injector main body 14, fuel injector Electromagnetic Control interface 2 with
ECU connects, and fuel injector Electromagnetic Control interface 2 controls fuel injector oil spout electromagnetic switch, respectively oil spout electromagnetic switch pre-with fuel injector
3, oil spout electromagnetic switch 4, fuel injector main jet electromagnetic oil switch 5 connection after fuel injector.
As shown in Figure 2,3, 4, oil spout electromagnetic switch 4, fuel injector main jet after fuel injector pre-oil spout electromagnetic switch 3, fuel injector
Oil spout electric magnet 4-1, fuel injector main jet electromagnetic oil after electromagnetic oil switch 5 oil spout electric magnet 3-1 pre-with fuel injector, fuel injector respectively
Ferrum 5-1 connects；After fuel injector pre-oil spout electric magnet 3-1, fuel injector, oil spout electric magnet 4-1, fuel injector main jet electromagnetic oil ferrum 5-1 divide
It is not arranged on Fuel Injector Bar 7, the upper end of fuel injector main jet beam hanger 8 after the pre-Fuel Injector Bar of fuel injector 6, fuel injector.
As it is shown in figure 5, fuel injector main body 14 includes pre-oil spout rod aperture seat 14-1, rear oil spout rod aperture seat 14-2, main jet beam hanger
Hole seat 14-3 and Fuel Injector Bar spring base 14-4, pre-oil spout rod aperture seat 14-1, rear oil spout rod aperture seat 14-2 and main jet beam hanger hole seat 14-
3 are coaxially disposed, and inside communicates, and rear oil spout rod aperture seat 14-2 is positioned at pre-oil spout rod aperture seat 14-1 end, main jet beam hanger hole seat
14-3 is positioned at rear oil spout rod aperture seat 14-2 end, and Fuel Injector Bar spring base 14-4 is positioned at fuel injector main body 14 and fuel injector end cap 1 phase
End even.
The pre-Fuel Injector Bar of fuel injector 6 is arranged in the pre-oil spout rod aperture seat 14-1 of fuel injector main body 14, and the pre-oil spout of fuel injector
Bar 6 can move in pre-oil spout rod aperture seat 14-1, as in figure 2 it is shown, in the pre-Fuel Injector Bar of fuel injector 6 includes the pre-Fuel Injector Bar of fuel injector
Macropore 6-3 in aperture 6-1, fuel injector pre-Fuel Injector Bar sealed end 6-2 and the pre-Fuel Injector Bar of fuel injector, aperture in the pre-Fuel Injector Bar of fuel injector
6-1 is respectively placed in the two ends of the pre-Fuel Injector Bar of fuel injector 6 with macropore 6-3 in the pre-Fuel Injector Bar of fuel injector, and the pre-Fuel Injector Bar of fuel injector seals
End 6-2 is placed in one end of the pre-Fuel Injector Bar of fuel injector 6, tight in fuel injector pre-Fuel Injector Bar sealed end 6-2 and pre-oil spout rod aperture seat 14-1
Closely connected conjunction, in the pre-Fuel Injector Bar of fuel injector, macropore 6-3 is placed in Fuel Injector Bar spring base 14-4.
In after fuel injector, Fuel Injector Bar 7 one end is arranged on the rear oil spout rod aperture seat 14-2 of fuel injector main body 14, the other end passes
In in the pre-Fuel Injector Bar of fuel injector, aperture 6-1 enters the pre-Fuel Injector Bar of fuel injector in macropore 6-3, after fuel injector, Fuel Injector Bar 7 can be in hole
Motion in seat.As it is shown on figure 3, Fuel Injector Bar after aperture 7-1, fuel injector in Fuel Injector Bar after Fuel Injector Bar 7 includes fuel injector after fuel injector
Macropore 7-3 in Fuel Injector Bar after sealed end 7-2 and fuel injector, after fuel injector in Fuel Injector Bar after aperture 7-1 and fuel injector in Fuel Injector Bar
Macropore 7-3 is respectively placed in the two ends of Fuel Injector Bar 7 after fuel injector, and after fuel injector, Fuel Injector Bar sealed end 7-2 is placed in oil spout after fuel injector
One end of bar 7, after fuel injector, Fuel Injector Bar sealed end 7-2 fits tightly in rear oil spout rod aperture seat 14-2, Fuel Injector Bar after fuel injector
Interior macropore 7-3 is placed in the pre-Fuel Injector Bar of fuel injector in macropore 6-3.
Fuel injector main jet beam hanger 8 one end is arranged in the main jet beam hanger hole seat 14-3 of fuel injector main body 14, and the other end passes
After after fuel injector, in Fuel Injector Bar, aperture 7-1 enters fuel injector in Fuel Injector Bar in macropore 7-3, fuel injector main jet beam hanger 8 can be in hole
Motion in seat.As shown in Figure 4, one end of fuel injector main jet beam hanger 8 is provided with fuel injector main jet beam hanger sealed end 8-1, fuel injector master
Fuel Injector Bar sealed end 8-1 fits tightly in the seat 14-3 of main jet beam hanger hole.Thus define fuel injector main jet beam hanger 8, fuel injector
Rear Fuel Injector Bar 7 is coaxially mounted in fuel injector main body 14 with the pre-Fuel Injector Bar of fuel injector 6, it is achieved accurate cooperation.
As it is shown in figure 5, hydraulic oil nozzle opening 9 includes hydraulic oil pre-nozzle opening 9-1, hydraulic oil main jet oilhole 9-2 and high pressure
Nozzle opening 9-3 one end respectively after nozzle opening 9-3 after oil, hydraulic oil pre-nozzle opening 9-1, hydraulic oil main jet oilhole 9-2 and hydraulic oil
Be connected with the end of pre-oil spout rod aperture seat 14-1, main jet beam hanger hole seat 14-3 and rear oil spout rod aperture seat 14-2, and with its internal phase
Logical, the other end communicates with fuel injector main body 14 outer wall respectively.Hydraulic oil pre-nozzle opening 9-1, hydraulic oil main jet oilhole 9-2 and high pressure
After oil, nozzle opening 9-3 is the most multiple, is evenly distributed in fuel injector main body 14.
As it is shown in figure 5, oil spout oil duct branch road 10 includes oil spout branch road 10-1, hydraulic oil main jet oil branch road 10-2 after hydraulic oil
Oil spout branch road 10-3 pre-with hydraulic oil, after hydraulic oil, oil spout branch road 10-1, hydraulic oil main jet oil branch road 10-2 and hydraulic oil spray in advance
Oil branch road 10-3 one end respectively and rear oil spout rod aperture seat 14-2, main jet beam hanger hole seat 14-3 and the end of pre-oil spout rod aperture seat 14-1
Sidewall is connected, and the other end is connected with fuel injector fuel oil main oil gallery 11, and communicates inside it.
Fuel injector fuel oil main oil gallery 11 is positioned at the sidewall of fuel injector main body 14, and fuel injector fuel oil main oil gallery import 12 is it
Import, fuel injector fuel oil main oil gallery import 12 is positioned at a side end of fuel injector main body 14, fuel injector fuel oil main oil gallery import 12
It is connected with the oil pipe come from fuel tank by fuel injector interface thread 13.
After fuel injector main jet beam hanger spring 15, fuel injector Fuel Injector Bar spring 16 and fuel injector pre-Fuel Injector Bar spring 17 respectively with
After fuel injector main jet electromagnetic oil ferrum 5-1, fuel injector, oil spout electric magnet 4-1 and fuel injector pre-oil spout electric magnet 3-1 is co-axially mounted, spray
After oil device pre-oil spout electric magnet 3-1, fuel injector, oil spout electric magnet 4-1, fuel injector main jet electromagnetic oil ferrum 5-1 lay respectively at Fuel Injector Bar
In the pre-Fuel Injector Bar of spring base 14-4, fuel injector after macropore 6-3 and fuel injector in Fuel Injector Bar in macropore 7-3, and utilize fuel injector end
Lid 1 withstands.
As shown in Fig. 2,3,4,5,6, fuel injector main jet beam hanger spring 15 is coaxially pacified with fuel injector main jet electromagnetic oil ferrum 5-1
Dress, and utilize fuel injector end cap 1 to withstand, thus precompressed fuel injector main jet beam hanger spring 15 makes the oil spout of fuel injector main jet beam hanger 8
Device main jet beam hanger sealed end 8-1 fits tightly in the main jet beam hanger hole seat 14-3 of fuel injector main body 14, prevents hydraulic oil main jet
The oil of oil branch road 10-2 enters hydraulic oil main jet oilhole 9-2, thus reaches the effect sealed；After fuel injector Fuel Injector Bar spring 16 with
After fuel injector, oil spout electric magnet 4-1 is co-axially mounted, and utilizes fuel injector end cap 1 to withstand, thus Fuel Injector Bar bullet after precompressed fuel injector
Spring 16 makes after fuel injector the rear oil spout rod aperture seat 14-of Fuel Injector Bar sealed end 7-2 and fuel injector main body 14 after the fuel injector of Fuel Injector Bar 7
Fitting tightly in 2, after preventing hydraulic oil, the oil of oil spout branch road 10-1 enters nozzle opening 9-3 after hydraulic oil, thus reaches sealing
Effect；Fuel injector pre-Fuel Injector Bar spring 17 oil spout pre-with fuel injector electric magnet 3-1 is co-axially mounted, and utilizes fuel injector end cap 1 to push up
Live, thus precompressed fuel injector pre-Fuel Injector Bar spring 17 makes fuel injector pre-Fuel Injector Bar sealed end 6-2 and the spray of the pre-Fuel Injector Bar of fuel injector 6
Fit tightly in the pre-oil spout rod aperture seat 14-1 of oil device main body 14, prevent the oil of hydraulic oil pre-oil spout branch road 10-3 from entering hydraulic oil
Pre-nozzle opening 9-1, thus reach the effect sealed.
As it is shown in fig. 7, in engine operation process, when air inlet, piston runs to top dead centre, now stops aerofluxus,
Postpone a period of time and close air inlet, because the inertia of air inlet to be utilized increases air inflow；When air inlet also stops when, now
ECU controls fuel injector pre-oil spout electromagnetic switch 3 and opens, oil spout electromagnetic switch 4, fuel injector main jet electromagnetic oil switch 5 after fuel injector
Close, thus fuel injector pre-oil spout electric magnet 3-1 energising, the magnetic of fuel injector pre-oil spout electric magnet 3-1 is strengthened, so that oil spout
The pre-Fuel Injector Bar of device 6 moves upward, and the fuel injector pre-Fuel Injector Bar sealed end 6-2 of the pre-Fuel Injector Bar of fuel injector 6 is under the effect of electromagnetic force
Mentioning, the oil of now hydraulic oil pre-oil spout branch road 10-3 enters hydraulic oil pre-nozzle opening 9-1, thus realizes pilot injection；Pilot injection
Under ECU control program, can injection repeatedly, piston upwards when, utilize tumble flow and vortex gas flow, promote new
Fresh air is sufficiently mixed with fuel oil, highly organized gaseous mixture.
As shown in Figure 8, running when engine piston continues up stop, ECU controls fuel injector main jet electromagnetic oil and switchs 5 dozens
Opening, after fuel injector pre-oil spout electromagnetic switch 3, fuel injector, oil spout electromagnetic switch 4 is closed, thus fuel injector main jet electromagnetic oil ferrum 5-1
Energising, the magnetic of fuel injector main jet electromagnetic oil ferrum 5-1 is strengthened, so that fuel injector main jet beam hanger 8 moves upward, fuel injector main jet
The fuel injector main jet beam hanger sealed end 8-1 of beam hanger 8 mentions under the effect of electromagnetic force, now hydraulic oil main jet oil branch road 10-2
Oil enters hydraulic oil main jet oilhole 9-2, thus realizes main injection；Main injection is under ECU control program, and the injection controlling main jet is begun
Point, injection pulse width, thus determine distributive value, organize gaseous mixture when plug ignition, it is achieved oil spout microgranule and fresh sky
The optimal uniformly mixing of gas, promotes that flame is propagated, improves flame propagation velocity, such that it is able to control combustion phase and burning temperature
Degree, controls maximum explosive pressure and the rate of pressure rise, it is achieved fuel oil fully burns, it is achieved the control to combustion phase.
As it is shown in figure 9, after engine spark plug igniting, gaseous mixture deflagrate, the High Temperature High Pressure of generation drives lives
Filling in and run to lower dead center, it is achieved expansion work, it is achieved in cylinder, thermal technology converts, ECU controls oil spout electromagnetic switch 4 dozens after fuel injector
Open, fuel injector pre-oil spout electromagnetic switch 3, fuel injector main jet electromagnetic oil switch 5 closedown, thus oil spout electric magnet 4-1 after fuel injector
Energising, after fuel injector, the magnetic of oil spout electric magnet 4-1 is strengthened, so that Fuel Injector Bar 7 moves upward after fuel injector, sprays after fuel injector
After the fuel injector of beam hanger 7, Fuel Injector Bar sealed end 7-2 mentions under the effect of electromagnetic force, now oil spout branch road 10-1 after hydraulic oil
Oil enters nozzle opening 9-3 after hydraulic oil, thus sprays after realizing；After be injected under ECU control program, after control spray oil mass,
The microgranule producing burning fully burns with Organic substance, it is achieved the cleaning burning in cylinder, reduces the generation of pollutant simultaneously.
Although the principle of the present invention being described in detail above in conjunction with the preferred embodiments of the present invention, this area skill
Art personnel are it should be understood that above-described embodiment is only the explanation of the exemplary implementation to the present invention, not to bag of the present invention
Restriction containing scope.Details in embodiment is not intended that limitation of the scope of the invention, without departing substantially from the present invention spirit and
In the case of scope, any equivalent transformation based on technical solution of the present invention, simple replacement etc. obviously change, and all fall within
Within scope.
Claims (2)
1. the method realizing fuel injector injection control strategy, it is characterised in that: in engine operation process, ECU controls
After fuel injector pre-oil spout electromagnetic switch, fuel injector, oil spout electromagnetic switch, fuel injector main jet electromagnetic oil switch on-off, thus oil spout
Oil spout electric magnet after device pre-oil spout electric magnet, fuel injector, fuel injector main jet electromagnetic oil Tie Tong electricity, change the pre-oil spout of described fuel injector
Oil spout electric magnet, the magnetic of described fuel injector main jet electromagnetic oil ferrum after electric magnet, described fuel injector, under the effect of electromagnetic force,
After the pre-Fuel Injector Bar of fuel injector, fuel injector, Fuel Injector Bar, fuel injector main jet beam hanger move upward, it is achieved pilot injection, rear injection, main jet
Penetrate.
The method realizing fuel injector injection control strategy the most according to claim 1, it is characterised in that described pilot injection mistake
Cheng Shi: in engine operation process, during air inlet, piston to top dead centre run, stop aerofluxus, postpone a period of time close into
Gas, when air inlet stops, ECU controls to open described fuel injector pre-oil spout electromagnetic switch, closes oil spout electromagnetism after described fuel injector
Switch and described fuel injector main jet electromagnetic oil switch, and described fuel injector pre-oil spout electric magnet is energized, described fuel injector pre-oil spout electricity
The magnetic of Magnet is strengthened, so that the pre-Fuel Injector Bar of described fuel injector moves upward, the fuel injector of the pre-Fuel Injector Bar of described fuel injector is pre-
Fuel Injector Bar sealed end is mentioned under the effect of electromagnetic force, and the oil of hydraulic oil pre-oil spout branch road enters the pre-nozzle opening of hydraulic oil, thus
Realize pilot injection, pilot injection under ECU control program, can injection repeatedly,
Described main injection event is: run when engine piston continues up stop, and ECU controls to open described fuel injector main jet oil
Electromagnetic switch, closes oil spout electromagnetic switch after described fuel injector pre-oil spout electromagnetic switch and described fuel injector, described fuel injector master
Oil spout electric magnet is energized, and the magnetic of described fuel injector main jet electromagnetic oil ferrum is strengthened, so that described fuel injector main jet beam hanger is upwards
Moving, the fuel injector main jet beam hanger sealed end of described fuel injector main jet beam hanger is mentioned under the effect of electromagnetic force, hydraulic oil main jet
The oil of oil branch road enters hydraulic oil main jet oilhole, thus realizes main injection,
Described rear course of injection is: after engine spark plug igniting, and piston runs to lower dead center, and ECU control is opened described
Oil spout electromagnetic switch after fuel injector, closes described fuel injector pre-oil spout electromagnetic switch and described fuel injector main jet electromagnetic oil switch,
Thus oil spout electric magnet energising after described fuel injector, after described fuel injector, the magnetic of oil spout electric magnet is strengthened, so that described spray
Oil device after Fuel Injector Bar move upward, after described fuel injector after the fuel injector of Fuel Injector Bar Fuel Injector Bar sealed end under the effect of electromagnetic force
Mentioning, after hydraulic oil, the oil of oil spout branch road enters nozzle opening after hydraulic oil, thus sprays after realizing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610716433.6A CN106089466B (en) | 2016-08-24 | 2016-08-24 | A method of realizing fuel injector injection control strategy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610716433.6A CN106089466B (en) | 2016-08-24 | 2016-08-24 | A method of realizing fuel injector injection control strategy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106089466A true CN106089466A (en) | 2016-11-09 |
| CN106089466B CN106089466B (en) | 2019-03-15 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110080887A (en) * | 2019-04-17 | 2019-08-02 | 天津大学 | A kind of compound combustion control method of engine |
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| CN1651755A (en) * | 2005-02-07 | 2005-08-10 | 大连理工大学 | Fuel injection nozzle |
| CN101984247A (en) * | 2010-11-04 | 2011-03-09 | 中国第一汽车集团公司 | Pressurizing common-rail oil injection system |
| US20140019028A1 (en) * | 2012-07-16 | 2014-01-16 | Ford Global Technologies, Llc | Differential fuel injection |
| CN103835813A (en) * | 2014-03-10 | 2014-06-04 | 大连理工大学 | Control method for composite fuel injection system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1651755A (en) * | 2005-02-07 | 2005-08-10 | 大连理工大学 | Fuel injection nozzle |
| CN101984247A (en) * | 2010-11-04 | 2011-03-09 | 中国第一汽车集团公司 | Pressurizing common-rail oil injection system |
| US20140019028A1 (en) * | 2012-07-16 | 2014-01-16 | Ford Global Technologies, Llc | Differential fuel injection |
| CN103835813A (en) * | 2014-03-10 | 2014-06-04 | 大连理工大学 | Control method for composite fuel injection system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110080887A (en) * | 2019-04-17 | 2019-08-02 | 天津大学 | A kind of compound combustion control method of engine |
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