CN101806255B - Method and system for driving electromagnetic valve of diesel engine - Google Patents
Method and system for driving electromagnetic valve of diesel engine Download PDFInfo
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- CN101806255B CN101806255B CN 201010129625 CN201010129625A CN101806255B CN 101806255 B CN101806255 B CN 101806255B CN 201010129625 CN201010129625 CN 201010129625 CN 201010129625 A CN201010129625 A CN 201010129625A CN 101806255 B CN101806255 B CN 101806255B
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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
- F02D41/20—Output circuits, e.g. for controlling currents in command coils
Abstract
The invention relates to a method and a system for driving the electromagnetic valve of a diesel engine, comprising the following steps: (1) setting the driving system comprising the electromagnetic valve, a sampling and driving unit and a processor, wherein a diesel engine managing module is preset; (2) presetting the injection-control signal duration, the maximum values of a first, a second, a third and current-control stages durations, the driving current target values of the first, second, third and a fourth current-control stages in the engine managing module; (3) calculating the durations of the four current-control stages by the engine managing module according to the preset injection-control signal duration; and (4) comparing the differences between the driving current target values and the actual values in the first, second, third and fourth stages by the engine managing module, and adjusting the driving current of the electromagnetic valve so as to enable the electromagnetic valve to be switched off and then partially switched on in the first current-control stage, to be partially switched on in the second current-control stage, to be partially switched on and then totally switched on in the third current-control stage and to be totally switched off in the fourth current-control stage. The invention is mainly applied in the electromagnetic valve driving system, in particular to an electronically controlled diesel engine.
Description
Technical field
The present invention relates to a kind of controlling method for diesel engine and control system thereof, particularly about a kind of electromagnetic valve of diesel engine method for driving and drive system thereof.
Background technique
Diesel engine ideal burning is mainly manifested in: NO
xLow with the discharge amount of particulate, the thermal efficiency is high simultaneously.Fuel injection characteristic corresponding to ideal burning process is " initial stage is slow, and mid-term, the later stage was disconnected soon rapidly ", and the shape approximation of fuel oil jet law is slow rear anxious " footwear type " first.But existing Common rail fuel injection system and monoblock pump fuel injection system all can't realize being similar to the fuel oil jet law of " footwear type ".In the existing Common rail fuel injection system, because the fuel oil that is total in the rail chamber is in high pressure conditions all the time, injection pressure is just higher during injection beginning, can't realize that therefore " footwear type " sprays.In the existing monoblock pump fuel injection system, because the action of the hydraulic injection device that adopts is to be controlled by the oil pressure in the high-pressure oil passage, and the foundation of high-pressure oil passage oil pressure relies on the pulsation oil supply system to finish, thereby so that the jet pressure of this system is also pulsed, although corresponding fuel injection characteristic also is to delay first rear urgency, but because jet pressure is set up comparatively fast in this system, the duration that the initial stage slowly sprays is very limited, so " the footwear type " of also failing to realize ideal fully sprays.
Current diesel fuel injection system adopts the solenoid valve type final controlling element more, and the driving current controlling method substantially all is " Peak﹠amp; Hold " method.This driving current controlling method can only realize the moving element lift rule of " pass-standard-sized sheet-pass ", can't realize that " the footwear type " of " pass-section separates-standard-sized sheet-pass " sprays.Cause the reason of this phenomenon to be " Peak﹠amp; Hold " controlling method adopted two sections driving mode.Adopted " Peak " driving mode at the injection initial stage, this moment, driving current was with I
PeakBe desired value, this value is generally higher, can fast lifting driving current and electromagnetic force, thus can the fast lifting moving element.After moving element reaches top lift, transfer " Hold " control mode to, this moment, driving current was with I
HoIdBe desired value, although this value compares I
PeakLittle, but still can make the moving element lift remain on maximum position, i.e. " standard-sized sheet " state.As seen, this drives in the controlling method, and the steady state of moving element only has " pass " and " standard-sized sheet " two states, can't realize " section separately " state, and " footwear type " fuel oil that also just can't realize ideal sprays.
Summary of the invention
For the problems referred to above, the purpose of this invention is to provide a kind of fuel injection system that can make and realize " footwear type " fuel-injected electromagnetic valve of diesel engine method for driving and drive system thereof.
For achieving the above object, the present invention takes following technological scheme: a kind of electromagnetic valve of diesel engine method for driving, it may further comprise the steps: 1) arrange one and comprise the drive system of solenoid valve, sampling and driver element and processor, and preset an engine management module in described processor; 2) in engine management module default spray driving current desired value in the phase I of control signal endurance, Current Control phase I endurance maximum value, Current Control second stage endurance maximum value, Current Control phase III endurance maximum value, Current Control, the driving current desired value in the Current Control second stage, Current Control in the phase III the driving current desired value and the driving current desired value in the Current Control quadravalence section; 3) according to the default injection control signal endurance, engine management module calculates the endurance in four Current Control stages; 4) within the phase I, poor according to the driving current desired value in the default phase I and actual driving current, revise the driving current of solenoid valve: engine management module flows to the control signal of sampling and driver element according to actual driving current and the adjustment of driving current desired value, make solenoid valve under higher driving current, finish "off" state, setting in motion, and to the status transition of " section separately "; 5) in second stage, poor according to the driving current desired value in the default second stage and actual driving current, revise the driving current of solenoid valve: engine management module flows to the control signal of sampling with driver element according to the difference adjustment of actual driving current and driving current desired value, makes solenoid valve maintain the state of " section separately " under lower driving current; 6) within the phase III, poor according to the driving current desired value in the default phase III and actual driving current, revise the driving current of solenoid valve: engine management module flows to the control signal of sampling and driver element according to actual driving current and the adjustment of driving current desired value, make solenoid valve under higher driving current, finish the state of " section separately ", setting in motion, and to the status transition of " standard-sized sheet "; 7) in the quadravalence section, poor according to the driving current desired value in the default quadravalence section and actual driving current, revise the driving current of solenoid valve: engine management module flows to the control signal of sampling with driver element according to actual driving current and the adjustment of driving current desired value, makes solenoid valve maintain the state of " complete shut-down " under lower driving current.
Described step 4), 5), 6) and 7) in, the actual current value in each stage by the sampling with the driver element collection.
In described step 4), 5), 6), 7) in, when each stage, default driving current desired value was higher than actual value, engine management module control sampling and driver element and power connection made the driving current rising that flows to solenoid valve; When the driving current desired value was lower than actual value, control sampling and driver element and power supply disconnected, and the driving current that flows to solenoid valve is descended.
In described step 3) in, the concrete computational process of the endurance in four Current Control stages is as follows:
If T
Total＞T
1max, T then
1=T
1maxOtherwise T
1=T
Total
If T
Total＞T
1max+ T
2max, T then
2=T
2maxOtherwise T
2=T
Total-T
1max
If T
Total＞T
1max+ T
2max+ T
3max, T then
3=T
3maxOtherwise T
3=T
Total-T
1max-T
2max
If T
Total＞T
1max+ T
2max+ T
3max, T then
4=T
Total-T
1max-T
2max-T
3maxOtherwise T
4=0;
Wherein, T
TotalBe default injection control signal endurance, T
1, T
2, T
3, T
4Be respectively the endurance in first, second, third and fourth stage of Current Control, T
1max, T
2max, T
3maxBe default first, second and third endurance in stage maximum value of Current Control.
First and third stage driving current desired value is 10A～30A, second stage driving current desired value is 3A～20A, quadravalence section driving current desired value is 5A～20A, Current Control phase I endurance maximum value is 50 μ s～800 μ s, Current Control second stage endurance maximum value is 50 μ s～1000 μ s, and Current Control phase III endurance maximum value is 50 μ s～800 μ s.
A kind of electromagnetic valve of diesel engine drive system is characterized in that: it comprises solenoid valve, sampling and driver element and processor; Described sampling and driver element gather the actual driving current of solenoid valve, and according to the control signal of described processor, adjust the driving current of described solenoid valve; Be preset with an engine management module in the described processor, be preset with driving current desired value, the driving current desired value in the Current Control second stage, the driving current desired value in the Current Control phase III and the driving current desired value in the Current Control quadravalence section of spraying in control signal endurance, Current Control phase I endurance maximum value, Current Control second stage endurance maximum value, Current Control phase III endurance maximum value, Current Control phase I in the described engine management module; Described engine management module is according to the default injection control signal endurance, calculate the endurance in four Current Control stages, the actual driving current of each the described Current Control solenoid valve in the stage that collects according to described sampling and driver element again and desired value poor adjusted the control signal of exporting to described sampling and driver element.
Described sampling and driver element comprise a sampling unit and a valve driver element, described sampling unit is sampled to the driving current of described solenoid valve, and flow to engine management module in the described processor, described valve driver element is adjusted the driving current of described solenoid valve according to the control signal of the engine management module in the described processor.
Described first and third stage of Current Control driving current desired value is 10A～30A, and described Current Control second stage driving current desired value is 3A～20A, and described Current Control quadravalence section driving current desired value is 5A～20A; Described Current Control phase I endurance maximum value is 50 μ s～800 μ s, and described Current Control second stage endurance maximum value is 50 μ s～1000 μ s, and described Current Control phase III endurance maximum value is 50 μ s～800 μ s; Described solenoid valve is fuel injector magnetic system in Common rail fuel injection system the time, is the high-pressure service pump solenoid valve in the time of in the monoblock pump fuel injection system.
The present invention is owing to take above technological scheme, it has the following advantages: 1, because solenoid valve, sampling and driver element and processor that system of the present invention arranges, it all is the assembly of existing electronic controlled diesel driving system for electromagnetic valve, therefore need not motor and injection electromagnetic valve are changed, only need the driving current desired value of engine management module in the change processor just can realize that " footwear type " fuel oil of fuel injection system sprays, make native system have preferably inheritance to existing electronic controlled diesel control system.2, because the target drive current in each Current Control stage of system of the present invention is a current value that is determined by the attribute of solenoid valve, therefore can be applied in various systems through overmatching, achieve " footwear type " fuel oil and spray, have comparatively widely application prospect.When 3, being higher than the actual driving current of respective stage owing to the driving current desired value of the inventive method in each stage, processor control sampling and driver element and power connection rise actual driving current; Otherwise control sampling and driver element and power supply disconnect, and actual driving current is descended, and therefore can pass through feedback control, obtain accurate driving current, and realize the control of moving element lift, thereby obtain good " footwear type " fuel oil jeting effect.The present invention can realize that fuel injection system " footwear type " fuel oil sprays, and is mainly used in driving system for electromagnetic valve, especially the electronic controlled diesel driving system for electromagnetic valve.
Description of drawings
Fig. 1 is the structural representation of electromagnetic valve of diesel engine drive system among the present invention
Fig. 2 is the driving current schematic representation in the method for driving of the present invention
Fig. 3 is the schematic representation of an implementation process of method for driving of the present invention
Embodiment
Below in conjunction with drawings and Examples the present invention is described in detail.
As shown in Figure 1, drive system of the present invention comprises solenoid valve 1, sampling and driver element 2 and processor 3.Solenoid valve 1 is fuel injector magnetic system in Common rail fuel injection system as the movement parts in the fuel injection system, is the high-pressure service pump solenoid valve when the monoblock pump fuel injection system.Sampling comprises a sample circuit 21 and a valve-driving circuit 22 with driver element 2.The driving current of 21 pairs of solenoid valves 1 of sample circuit is sampled, and the actual driving current that will gather flows to processor 3, and valve-driving circuit 22 is adjusted the driving current of solenoid valve 1 according to the control signal of processor 3.
What processor 3 of the present invention adopted is FreeScale MC9S12XEP100 type single-chip microcomputer, wherein be preset with an engine management module, be preset with in the engine management module and spray the control signal endurance, Current Control phase I endurance maximum value, Current Control second stage endurance maximum value, Current Control phase III endurance maximum value, driving current desired value in the Current Control phase I, driving current desired value in the Current Control second stage, driving current desired value in the Current Control phase III and the driving current desired value in the Current Control quadravalence section.Engine management module is according to spraying the control signal endurance, calculate the endurance in each Current Control stage, and then relatively sampling and actual driving current and the difference between the target drive current value that driver element 2 feeds back in each Current Control stage, adjust to export to and sample and the control signal of driver element 2.As shown in Figure 2, U among Fig. 2 represents that processor 3 flows to the control signal of sampling and driver element 2, the actual driving current that I represents to sample and feeds back to driver element 2, the engine management module in the processor 3 may further comprise the steps the electromagnetic valve of diesel engine method for driving:
1) engine management module calculates the endurance in four Current Control stages according to the default injection control signal endurance.Drawing the calculating principle of the endurance in four Current Control stages according to the injection control signal is: guarantee that preferentially endurance phase I is maximum value, guarantee preferentially that afterwards the second stage endurance is maximum value, guarantee preferentially that afterwards endurance phase III is maximum value, but the endurance sum of four-stage should equal to spray the control signal endurance.Concrete computational process is as follows:
If T
Total＞T
1max, T then
1=T
1maxOtherwise T
1=T
Total
If T
Total＞T
1max+ T
2max, T then
2=T
2maxOtherwise T
2=T
Total-T
1max
If T
Total＞T
1max+ T
2max+ T
3max, T then
3=T
3maxOtherwise T
3=T
Total-T
1max-T
2max
If T
Total＞T
1max+ T
2max+ T
3max, T then
4=T
Total-T
1max-T
2max-T
3maxOtherwise T
4=0.
Wherein, T
TotalFor spraying the control signal endurance, calculated by engine management module; T
1Be the endurance of Current Control of the present invention phase I; T
1maxBe Current Control of the present invention phase I endurance maximum value, value is determined by the attribute of solenoid valve 1, is generally 50 μ s～800 μ s; T
2Be the endurance of Current Control second stage of the present invention; T
2maxBe Current Control second stage endurance maximum value of the present invention, value is determined by the attribute of solenoid valve 1, is generally 50 μ s～1000 μ s; T
3Be the endurance of Current Control of the present invention phase III; T
3maxBe Current Control of the present invention phase III endurance maximum value, value is determined by the attribute of solenoid valve 1, is generally 50 μ s～800 μ s; T
4Be the endurance of Current Control quadravalence section of the present invention.
2) at phase I T
1In, according to default phase I T
1Interior driving current desired value I
PeakThe actual driving current that gathers with sampling and driver element 2 poor, revise the driving current of solenoid valve 1: engine management module is according to actual driving current and driving current desired value I
PeakAdjustment flows to sampling and the control signal of driver element 2, makes solenoid valve 1 finish "off" state under higher driving current, setting in motion, and to the status transition of " section separately ".In this process, I
PeakValue is determined by the attribute of solenoid valve 1, is generally 10A～30A.As driving current desired value I
PeakWhen being higher than actual driving current, engine management module control sampling and driver element 2 and power connection are risen the driving current that flows to solenoid valve 1; As driving current desired value I
PeakWhen being lower than actual driving current, engine management module control sampling disconnects with driver element 2 and power supply, and the driving current that flows to solenoid valve 1 is descended.
3) at second stage T
2In, according to default second stage T
2Interior driving current desired value I
Hold1The actual driving current that gathers with sampling and driver element 2 poor, revise the driving current of solenoid valve 1: engine management module is according to actual driving current and driving current desired value I
Hold1The difference adjustment flow to sampling and the control signal of driver element 2, make solenoid valve 1 under lower driving current, maintain the state of " section is separately ".In this process, driving current desired value I
Hold1Value is determined by the attribute of solenoid valve 1, but should be lower than phase I driving current desired value I
Peak, I
Hold1Value is generally 3A～20A.As driving current desired value I
Hold1When being higher than actual driving current, engine management module control sampling and driver element 2 and power connection are risen the driving current that flows to solenoid valve 1; As driving current desired value I
Hold1When being lower than actual driving current, engine management module control sampling disconnects with driver element 2 and power supply, and the driving current that flows to solenoid valve 1 is descended.
4) at phase III T
3In, according to default phase III T
3Interior driving current desired value I
PeakThe actual driving current that gathers with sampling and driver element 2 poor, revise the driving current of solenoid valve 1: engine management module is according to actual driving current and driving current desired value I
PeakAdjustment flows to sampling and the control signal of driver element 2, the state that makes solenoid valve 1 under higher driving current, finish " section separates ", and setting in motion, and to the status transition of " standard-sized sheet ".In this process, as driving current desired value I
PeakWhen being higher than actual driving current, engine management module control sampling and driver element 2 and power connection are risen the driving current that flows to solenoid valve 1; As driving current desired value I
PeakWhen being lower than actual driving current, engine management module control sampling disconnects with driver element 2 and power supply, and the driving current that flows to solenoid valve 1 is descended.
5) at quadravalence section T
4In, according to default quadravalence section T
4Interior driving current desired value I
Hold2The actual driving current that gathers with sampling and driver element 2 poor, revise the driving current of solenoid valve 1: engine management module is according to actual driving current and driving current desired value I
Hold2Adjustment flows to the control signal of sampling and driver element 2, makes solenoid valve 1 maintain the state of " complete shut-down " under lower driving current.In this process, I
Hold2Value is determined by the attribute of solenoid valve 1, but should be lower than phase I driving current desired value I
PeakAnd be higher than second stage driving current desired value I
Hold1, I
Hold2Value is generally 5A～20A.As driving current desired value I
Hold2When being higher than actual driving current, engine management module control sampling and driver element 2 and power connection are risen the driving current that flows to solenoid valve 1; As driving current desired value I
Hold2When being lower than actual driving current, engine management module control sampling disconnects with driver element 2 and power supply, and the driving current that flows to solenoid valve 1 is descended.
As shown in Figure 3, U among Fig. 3 represents that the engine management module in the processor 3 flows to the control signal of sampling and driver element 2, the actual driving current that I represents to sample and feeds back to driver element 2, S represents the lift of solenoid valve valve rod, F represents the jet pressure of oil sprayer end.Come method for driving of the present invention is described in detail below by a specific embodiment.
In the actual application, suppose that application system is the monoblock pump fuel injection system, its moving element is high-pressure service pump solenoid valve valve rod, first and third stage driving current desired value I
PeakBe 20A, second stage driving current desired value I
Hold1Be 5A, quadravalence section driving current desired value I
Hold2Be 10A, spraying the control signal endurance is 1300 μ s, Current Control phase I endurance maximum of T among the present invention
1maxBe 400 μ s, Current Control second stage endurance maximum of T
2maxBe 300 μ s, Current Control phase III endurance maximum of T
3maxBe 400 μ s.Then at first calculating Tx is 400 μ s, T
2Be 300 μ s, T
3Be 400 μ s, T
4Be 200 μ s.
As shown in Figure 3, a is the Current Control that enters the phase I, and the engine management module in the processor 3 is carried out feedback control according to sampling and the actual driving current signal of driver element 2 outputs.When actual driving current is higher than 20A, disconnect being connected of sampling and driver element 2 and power supply by control signal; When actual driving current is lower than 20A, connect being connected of sampling and driver element 2 and power supply by control signal.This endurance in stage is 400 μ s.In this stage, because driving current is stabilized in a higher level after constantly rising, so electromagnetic force also remains on a higher level after fast lifting, corresponding solenoid valve valve rod against the force of the spring under the effect of electromagnetic force, be that solenoid valve breaks away from "off" state, setting in motion, the fuel flow that flows to high-pressure oil passage increases, and the jet pressure of oil sprayer end begins to raise.
B is the Current Control that enters second stage, and the engine management module in the processor 3 is carried out feedback control according to sampling and the actual driving current signal of driver element 2 outputs.When actual driving current is higher than 5A, disconnect being connected of sampling and driver element 2 and power supply by control signal; When actual driving current is lower than 5A, connect being connected of sampling and driver element 2 and power supply by control signal.This endurance in stage is 300 μ s.In this stage, because driving current has maintained a lower level, electromagnetic force also is reduced to the level that substantially equates with spring resistance simultaneously, can keep static so that the solenoid valve valve rod is basic under the acting in conjunction of electromagnetic force and spring force, be that solenoid valve maintains the state of " section separately ", the fuel flow that flows to accordingly high-pressure oil passage remains on a lower level, and the jet pressure of oil sprayer end slowly raises.
The Current Control of phase I and second stage can make the solenoid valve valve rod only promote a part of lift, reaches the effect of " section separately ", thereby makes the jet pressure in injection beginning stage lower, has obtained the jeting effect of " initial stage is slow ".
C is the Current Control that enters the phase III, and the engine management module in the processor 3 is carried out feedback control according to sampling and the actual driving current signal of driver element 2 outputs.When actual driving current is higher than 20A, disconnect being connected of sampling and driver element 2 and power supply by control signal; When actual driving current is lower than 20A, connect being connected of sampling and driver element 2 and power supply by control signal.This endurance in stage is 400 μ s.In this stage, owing to be stabilized in a higher level after driving current rises again, so electromagnetic force also remains on a higher level after fast lifting, corresponding solenoid valve valve rod against the force of the spring again under the effect of electromagnetic force, be that solenoid valve no longer is in the state of " section separately ", setting in motion, the fuel flow that flows to high-pressure oil passage increases, and the jet pressure of oil sprayer end raises fast.
The d stage is the Current Control that enters the quadravalence section, and the engine management module in the processor 3 is carried out feedback control according to sampling and the actual driving current signal of driver element 2 outputs.When actual driving current is higher than 10A, disconnect being connected of sampling and driver element 2 and power supply by control signal; When actual driving current is lower than 10A, connect being connected of sampling and driver element 2 and power supply by control signal.This endurance in stage is 200 μ s.In this stage, because driving current has maintained a higher level, electromagnetic force is greater than spring resistance, can be so that the solenoid valve valve rod rises under the acting in conjunction of electromagnetic force takes a seat, be that solenoid valve maintains the state of " standard-sized sheet ", the fuel flow that flows to accordingly high-pressure oil passage is very large, and the jet pressure of oil sprayer end raises fast.
The Current Control of phase III and quadravalence section can make solenoid valve valve rod fast lifting remainder lift, reaches the effect of " standard-sized sheet ", thereby makes the jet pressure that sprays the later stage very high, has obtained the fuel oil jeting effect of " mid-term rapidly ".
This electromagnetic valve of diesel engine drive system and method can make the characteristics of motion that movement parts realizes in the fuel injection system " pass-section separates-standard-sized sheet-pass ", thereby anxious " footwear type " fuel oil jet law after obtaining to delay first makes motor obtain lower discharging and better Economy.
Claims (10)
1. electromagnetic valve of diesel engine method for driving, it may further comprise the steps:
1) arranges one and comprise the drive system of solenoid valve, sampling and driver element and processor, and in described processor, preset an engine management module;
2) in engine management module default spray driving current desired value in the phase I of control signal endurance, Current Control phase I endurance maximum value, Current Control second stage endurance maximum value, Current Control phase III endurance maximum value, Current Control, the driving current desired value in the Current Control second stage, Current Control in the phase III the driving current desired value and the driving current desired value in the Current Control quadravalence section;
3) according to the default injection control signal endurance, engine management module calculates the endurance in four Current Control stages;
4) within the phase I, poor according to the driving current desired value in the default phase I and actual driving current, revise the driving current of solenoid valve: engine management module flows to the control signal of sampling and driver element according to actual driving current and the adjustment of driving current desired value, make solenoid valve under higher driving current, finish "off" state, setting in motion, and to the status transition of " section separately ";
5) in second stage, poor according to the driving current desired value in the default second stage and actual driving current, revise the driving current of solenoid valve: engine management module flows to the control signal of sampling with driver element according to the difference adjustment of actual driving current and driving current desired value, makes solenoid valve maintain the state of " section separately " under lower driving current;
6) within the phase III, poor according to the driving current desired value in the default phase III and actual driving current, revise the driving current of solenoid valve: engine management module flows to the control signal of sampling and driver element according to actual driving current and the adjustment of driving current desired value, make solenoid valve under higher driving current, finish the state of " section separately ", setting in motion, and to the status transition of " standard-sized sheet ";
7) in the quadravalence section, poor according to the driving current desired value in the default quadravalence section and actual driving current, revise the driving current of solenoid valve: engine management module flows to the control signal of sampling with driver element according to actual driving current and the adjustment of driving current desired value, makes solenoid valve maintain the state of " standard-sized sheet " under lower driving current; In this process, the value of driving current desired value is determined by the attribute of solenoid valve, but should be lower than phase I driving current desired value and be higher than second stage driving current desired value.
2. a kind of electromagnetic valve of diesel engine method for driving as claimed in claim 1 is characterized in that: described step 4), 5), 6) and 7) in, the actual current value in each stage is by sampling and driver element collection.
3. a kind of electromagnetic valve of diesel engine method for driving as claimed in claim 1, it is characterized in that: in described step 4), 5), 6), 7) in, when each stage, default driving current desired value was higher than actual value, engine management module control sampling and driver element and power connection rise the driving current that flows to solenoid valve; When the driving current desired value was lower than actual value, control sampling and driver element and power supply disconnected, and the driving current that flows to solenoid valve is descended.
4. a kind of electromagnetic valve of diesel engine method for driving as claimed in claim 2, it is characterized in that: in described step 4), 5), 6), 7) in, when each stage, default driving current desired value was higher than actual value, engine management module control sampling and driver element and power connection rise the driving current that flows to solenoid valve; When the driving current desired value was lower than actual value, control sampling and driver element and power supply disconnected, and the driving current that flows to solenoid valve is descended.
5. as claimed in claim 1 or 2 or 3 or 4 a kind of electromagnetic valve of diesel engine method for driving is characterized in that: in described step 3) in, the concrete computational process of the endurance in four Current Control stages is as follows:
If T
Total＞T
1max, T then
1=T
1maxOtherwise T
1=T
Total
If T
Total＞T
1max+ T
2max, T then
2=T
2maxOtherwise T
2=T
Total-T
1max
If T
Total＞T
1max+ T
2max+ T
3max, T then
3=T
3maxOtherwise T
3=T
Total-T
1max-T
2max
If T
Total＞T
1max+ T
2max+ T
3max, T then
4=T
Total-T
1max-T
2max-T
3maxOtherwise T
4=0;
Wherein, T
TotalBe default injection control signal endurance, T
1, T
2, T
3, T
4Be respectively the endurance in first, second, third and fourth stage of Current Control, T
1max, T
2max, T
3maxBe default first, second and third endurance in stage maximum value of Current Control.
6. as claimed in claim 1 or 2 or 3 or 4 a kind of electromagnetic valve of diesel engine method for driving, it is characterized in that: first and third stage driving current desired value is 10A～30A, second stage driving current desired value is 3A～20A, quadravalence section driving current desired value is 5A～20A, Current Control phase I endurance maximum value is 50 μ s～800 μ s, Current Control second stage endurance maximum value is 50 μ s～1000 μ s, and Current Control phase III endurance maximum value is 50 μ s～800 μ s.
7. a kind of electromagnetic valve of diesel engine method for driving as claimed in claim 5, it is characterized in that: first and third stage driving current desired value is 10A～30A, second stage driving current desired value is 3A～20A, quadravalence section driving current desired value is 5A～20A, Current Control phase I endurance maximum value is 50 μ s～800 μ s, Current Control second stage endurance maximum value is 50 μ s～1000 μ s, and Current Control phase III endurance maximum value is 50 μ s～800 μ s.
8. electromagnetic valve of diesel engine drive system that realizes each described method in 1～7, it is characterized in that: it comprises solenoid valve, sampling and driver element and processor;
Described sampling and driver element gather the actual driving current of solenoid valve, and according to the control signal of described processor, adjust the driving current of described solenoid valve;
Be preset with an engine management module in the described processor, be preset with driving current desired value, the driving current desired value in the Current Control second stage, the driving current desired value in the Current Control phase III and the driving current desired value in the Current Control quadravalence section of spraying in control signal endurance, Current Control phase I endurance maximum value, Current Control second stage endurance maximum value, Current Control phase III endurance maximum value, Current Control phase I in the described engine management module; Described engine management module is according to the default injection control signal endurance, calculate the endurance in four Current Control stages, the actual driving current of each the described Current Control solenoid valve in the stage that collects according to described sampling and driver element again and desired value poor adjusted the control signal of exporting to described sampling and driver element.
9. a kind of electromagnetic valve of diesel engine drive system as claimed in claim 8, it is characterized in that: described sampling and driver element comprise a sampling unit and a valve driver element, described sampling unit is sampled to the driving current of described solenoid valve, and flow to engine management module in the described processor, described valve driver element is adjusted the driving current of described solenoid valve according to the control signal of the engine management module in the described processor.
10. a kind of electromagnetic valve of diesel engine drive system as claimed in claim 8, it is characterized in that: described first and third stage of Current Control driving current desired value is 10A～30A, described Current Control second stage driving current desired value is 3A～20A, and described Current Control quadravalence section driving current desired value is 5A～20A; Described Current Control phase I endurance maximum value is 50 μ s～800 μ s, and described Current Control second stage endurance maximum value is 50 μ s～1000 μ s, and described Current Control phase III endurance maximum value is 50 μ s～800 μ s; Described solenoid valve is fuel injector magnetic system in Common rail fuel injection system the time, is the high-pressure service pump solenoid valve in the time of in the monoblock pump fuel injection system.
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| CN 201010129625 CN101806255B (en) | 2010-03-19 | 2010-03-19 | Method and system for driving electromagnetic valve of diesel engine |
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| CN 201010129625 CN101806255B (en) | 2010-03-19 | 2010-03-19 | Method and system for driving electromagnetic valve of diesel engine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102287281B (en) * | 2011-05-06 | 2013-07-31 | 清华大学 | Electric control diesel engine balance correction method and system |
| JP5754357B2 (en) * | 2011-11-18 | 2015-07-29 | 株式会社デンソー | Fuel injection control device for internal combustion engine |
| CN108958079B (en) * | 2018-07-18 | 2021-05-25 | 常州易控汽车电子股份有限公司 | Closing control system for engine EGR valve and method thereof |
| CN109270868B (en) * | 2018-10-24 | 2021-01-29 | 安徽锐视光电技术有限公司 | High-speed electromagnetic valve driving system |
| CN114704411B (en) * | 2022-04-14 | 2023-06-06 | 一汽解放汽车有限公司 | Electromagnetic valve driving control method |
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