CN106555714A - Engine system with gas recirculation system and its control method - Google Patents
Engine system with gas recirculation system and its control method Download PDFInfo
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- CN106555714A CN106555714A CN201510632419.3A CN201510632419A CN106555714A CN 106555714 A CN106555714 A CN 106555714A CN 201510632419 A CN201510632419 A CN 201510632419A CN 106555714 A CN106555714 A CN 106555714A
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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
- F02D41/0025—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D41/0047—Controlling exhaust gas recirculation [EGR]
- F02D41/006—Controlling exhaust gas recirculation [EGR] using internal EGR
- F02D41/0062—Estimating, calculating or determining the internal EGR rate, amount or flow
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
A kind of engine system with gas recirculation system, can realize that EGR gases are finally still within the state of layer distributed after the cylinder (internal combustion engine) into engine with fresh air.The engine system includes internal combustion engine and tail gas discharging pipe, the gas recirculation system includes EGR gas backstreaming pipes, there is in the cylinder head of the internal combustion engine multiple intake valves and multiple exhaust valves, it is characterized in that, the inlet manifold of the engine system or the air intake branch diverged out from the inlet manifold are connected with intake valve with the fresh air in multiple intake valves of the cylinder head, one end of the EGR gas backstreamings pipe of the gas recirculation system is connected to the midway of the tail gas discharging pipe, the other end is connected with intake valve with the EGR gases in multiple intake valves of the cylinder head, the lead that the EGR gases intake valve specifies in advance relative to fresh air intake valve.
Description
Technical field
The present invention relates to a kind of engine system and its control method, systems there is waste gas again
The engine system and its control method of the circulatory system (egr system).
Background technology
In the past, in the engine system with gas recirculation system, by the tail gas for discharging engine
(EGR gases) is introduced in electronic throttle inlet manifold behind the door via conduit, then with inlet manifold in
Fresh air is after uniform mixing, then starts the entrance together with the mixed gas of fresh air of EGR gases
(referring for example to patent document 1 (CN103485937A), patent document 2 in the cylinder (internal combustion engine) of machine
(ZL200980160751.7) etc.).
By introducing EGR gases, can realize reducing NOx, optimization discharge, while improving fuel efficiency.
But, in as above-mentioned patent document 1, prior art patent document 2, due to EGR gas
Body is uniformly mixed with fresh air, accordingly, there exist following problem：
(1) when EGR rate reaches more than 20%, can there is difficulty of catching fire, or even phenomenon of catching fire, on the contrary
Discharge and oil consumption can be affected；
(2) burning is accordingly, there exist due in combustion beads (near cylinder wall) place's temperature than relatively low
Incomplete phenomenon, and with the raising of EGR rate, unburnt ratio also increases therewith, and then
Exhaust emissions and fuel efficiency is made to be deteriorated.
Thus, it is necessary to it is layered EGR gases and the mixed gas of fresh air.
In order to the mixed gas for realizing above-mentioned EGR gases and fresh air enter the cylinder (internal combustion of engine
Machine) after layering, such as in patent document 3 (ZL03148289.9), patent document 4
Etc. (ZL201310711724.2), in, layering is realized using a variety of modes.
For example, in patent document 3 (ZL03148289.9), make inlet manifold extend by way of come
Layering is realized, in patent document 4 (ZL201310711724.2), layering is realized by deflector.
But, either above-mentioned patent document 3, or patent document 4, EGR gases are with fresh air most
Mix before intake valve eventually, thus, can still be subject to when the gas after layering mixes before intake valve fresh
The impact of air.
Therefore, how to realize realizing EGR gases with fresh air finally in the cylinder into engine
The state that layer distributed is still within after (internal combustion engine) is become as technical problem urgently to be resolved hurrily.
The content of the invention
The present invention makees to solve above-mentioned technical problem, its object is to provide a kind of with waste gas recycling system
The engine system of system, the engine system can realize that EGR gases are finally started in entrance with fresh air
The state of layer distributed is still within after the cylinder (internal combustion engine) of machine.
Another object of the present invention is to provide a kind of control of the engine system with gas recirculation system
Method processed, by above-mentioned control method, can make the tail gas ratio into after cylinder positioned at cylinder bottom it is maximum,
Fresh air is minimum, and the tail gas ratio minimum, fresh air positioned at cylinder upper strata (i.e. around spark plug) is most
It is many.
To achieve these goals, a first aspect of the present invention provides a kind of with gas recirculation system
Engine system, above-mentioned engine system include internal combustion engine and tail gas discharging pipe, above-mentioned waste gas recycling
System includes EGR gas backstreaming pipes, in the cylinder head of above-mentioned internal combustion engine have multiple intake valves and
Multiple exhaust valves, is characterized in that, the inlet manifold of above-mentioned engine system or from above-mentioned inlet manifold
The air intake branch for diverging out and the fresh air air inlet in multiple intake valves of above-mentioned cylinder head
Valve connects, and one end of the above-mentioned EGR gas backstreamings pipe of above-mentioned gas recirculation system is connected to above-mentioned
The midway of tail gas discharging pipe, the other end and the EGR gas in multiple intake valves of above-mentioned cylinder head
Body is connected with intake valve, and above-mentioned EGR gases intake valve is relative to fresh air intake valve
The lead for specifying in advance.
According to configured as described above, it is not as prior art, EGR gases is being entered with fresh air
In gas manifold after uniform mixing, the combustion chamber of the internal combustion engine of engine system is entered back into, but makes EGR
Gas enters the combustion chamber of internal combustion engine respectively from fresh air via different intake valves, thus, energy
The prior art for after EGR gases are uniformly mixed with fresh air entering combustion chamber and causing enough is avoided to be deposited
(1) and (2) the two technical problems.
In addition, according to configured as described above, as above-mentioned EGR gases intake valve is relative to fresh
The lead that air intake valve specifies in advance, therefore, it is possible to realize EGR gases with fresh air most
It is still within the state of layer distributed eventually after the cylinder (internal combustion engine) into engine.
The engine system with gas recirculation system of second aspect present invention is in the present invention first
On the basis of the engine system with gas recirculation system of aspect, it is characterized in that, above-mentioned regulation
Lead be constant lead.
By configured as described above, EGR gases can be kept to enter with fresh air under any circumstance
Enter the layer distributed state after the cylinder (internal combustion engine) of engine.
The engine system with gas recirculation system of third aspect present invention is in the present invention first
On the basis of the engine system with gas recirculation system of aspect, it is characterized in that, based on upper
The amount of the fresh air flowed in stating inlet manifold or above-mentioned air intake branch and above-mentioned EGR gases return
The amount of the EGR gases flowed in flow tube, calculates the lead of above-mentioned regulation.
By configured as described above, due to flowing based in above-mentioned inlet manifold or above-mentioned air intake branch
Fresh air amount and the amount of the EGR gases flowed in above-mentioned EGR gas backstreamings pipe, calculate
The lead of above-mentioned regulation, therefore, (the EGR when EGR gas intake valves open maximum substantially
When the lift amount of gas intake valve is maximum), fresh air is opened with intake valve, so into gas
Ratio maximum, the fresh air that the EGR gases of cylinder bottom are located at after cylinder is minimum, while in fresh air
When opening substantially maximum with intake valve (when the lift amount of fresh air intake valve is maximum), by EGR
Gas is closed with intake valve, can so be made into after cylinder positioned at cylinder upper strata (i.e. around spark plug)
EGR gas ratios are minimum, fresh air is most.
A second aspect of the present invention provides a kind of control of the engine system with gas recirculation system
Method, it is characterised in that include：The step of judging to whether being imported with EGR gases；Sentencing
Break the EGR gas flow calculation procedures for be imported with during EGR gases, EGR gas flows being calculated；
After above-mentioned EGR gas flows calculation procedure, the lead that EGR gases import the lead at moment is calculated
Calculation procedure；After the above-mentioned EGR gas flows calculation procedure, the start-up time for calculating intake valve enters
Gas valve opening time calculation procedure；Based on the EGR gas calculated in above-mentioned lead calculation procedure
Body import the moment lead and calculate in above-mentioned intake valve start-up time calculation procedure it is above-mentioned
The start-up time of intake valve, calculates the EGR gases importing moment calculating that EGR gases import the moment
Step；And led according to the EGR gases calculated in above-mentioned EGR gases importing moment calculation procedure
Enter the moment, control the EGR gas intake valves in intake valve, so which moves to and above-mentioned EGR
Gas imports the EGR gases intake valve regulating step of moment corresponding target location.
By control method as above, due to importing moment calculation procedure and EGR including EGR gases
Gas intake valve regulating step, therefore, it is possible to adjust during the unlatching of EGR gas intake valves
Carve, so that the tail gas ratio maximum, fresh air into after cylinder positioned at cylinder bottom is minimum, positioned at cylinder
The tail gas ratio on upper strata (i.e. around spark plug) is minimum, fresh air is most.
Description of the drawings
Fig. 1 is the schematic diagram for representing the engine system with gas recirculation system of the prior art.
Fig. 2 is that the engine system with gas recirculation system for representing an embodiment of the present invention is shown
It is intended to.
Fig. 3 (a) and Fig. 3 (b) are the gas in the engine system for represent respectively prior art and the present invention
The schematic diagram of the partial structurtes around cylinder cap.
Fig. 4 (a) and Fig. 4 (b) be represent respectively in prior art and engine system of the invention with
The figure of the start-up time of the corresponding cam of intake valve.
Fig. 5 (a) and Fig. 5 (b) are entering in the engine system for represent respectively prior art and the present invention
The figure of the valve lift amount of gas valve.
Fig. 6 is that the control method to the engine system with gas recirculation system of the present invention is said
Bright flow chart.
Specific embodiment
Hereinafter, referring to the drawings, the engine system with gas recirculation system to the present invention and its control
Method processed is described in detail.
First, by referring to and contrast Fig. 1 and Fig. 2, to the present invention with gas recirculation system
The overall structure of engine system is illustrated.Fig. 1 is to represent of the prior art to be with waste gas recycling
The schematic diagram of the engine system 100 ' of system 200 ', Fig. 2 is to represent having for an embodiment of the present invention
The schematic diagram of the engine system 100 of gas recirculation system 200.
Here, as depicted in figs. 1 and 2, illustrate by taking the engine system of turbocharging type as an example, but
The present invention is not limited to the engine system of this, or naturally aspirated.
As depicted in figs. 1 and 2, engine system 100 (100 ') including air inlet 110 (110 '),
Turbocharger 120 (120 '), charge air cooler 130 (130 '), electronic throttle 140 (140 '),
Internal combustion engine 150 (150 ') and tail gas discharging pipe 160 (160 ') etc..
Fresh air from air inlet 110 (110 ') into turbocharger 120 (120 '), and
After being pressurized by turbocharger 120 (120 '), carry out into charge air cooler 130 (130 ')
Cooling, then flows into engine system 100 (100 ') via electronic throttle 140 (140 ')
Inlet manifold P (P '), eventually enters into the combustion chamber of internal combustion engine 150 (150 ').
In addition, engine system 100 (100 ') also includes gas recirculation system 200 (200 '),
Above-mentioned gas recirculation system 200 (200 ') includes EGR gas backstreamings pipe 210 (210 '), upper
State EGR gas backstreamings pipe 210 (210 ') midway be provided with EGR gas coolers 211 (211 '),
EGR gas temperature sensors 212 (212 ') and EGR gas valves 213 (213 ').
By above-mentioned EGR gas backstreamings pipe 210 (210 '), a part of tail gas is made from engine system 100
The tail gas discharging pipe 160 (160 ') of (100 ') flows out, and in EGR gas coolers 211 (211 ')
In after the tail gas higher to temperature cools down, eventually enter into engine system 100 as EGR gases
The combustion chamber of the internal combustion engine 150 (150 ') of (100 ').
More particularly, in the engine system 100 ' of the prior art shown in Fig. 1, EGR gases
One end of return duct 210 ' is connected to the midway of tail gas discharging pipe 160 ', and the other end is connected to engine
Inlet manifold P of system 100 ' ' midway, the tail gas flowed out from tail gas discharging pipe 160 ' is used as EGR
Gas is fully mixed with fresh air as above in flowing into inlet manifold P ', and in inlet manifold P '
After conjunction, via cylinder head CyH of engine system 100 ' ' (with reference to Fig. 3 (a)) eventually enter into and start
The combustion chamber of the internal combustion engine 150 (150 ') of machine system 100 (100 ').
On the other hand, in the engine system 100 of the present invention shown in Fig. 2, EGR gas backstreamings
One end of pipe 210 is connected to the midway of tail gas discharging pipe 160, and the other end is directly connected to engine system
The intake valve (EGR gases intake valve IntV2) (with reference to Fig. 3 (b)) of cylinder head CyH of system 100,
The tail gas flowed out from tail gas discharging pipe 160 ' is directly entered engine system 100 (100 ') as EGR gases
Internal combustion engine 150 (150 ') combustion chamber.
Below, with reference to Fig. 3 (a) and Fig. 3 (b) to prior art and the structure of the cylinder head of the present invention
It is described in detail.Wherein, Fig. 3 (a) is the gas in the engine system 100 ' for represent prior art
The schematic diagram of the partial structurtes around cylinder cap CyH ', Fig. 3 (b) are the engine systems for representing the present invention
The schematic diagram of the partial structurtes around cylinder head CyH in 100.
Here, needing the air inlet to internal combustion engine and exhaust to carry out simple illustration.
The gas of so-called " Four valve Dual Over Head Camshaft " formula that current engine system is generally adopted by
Cylinder, which is a kind of valve spread pattern that two camshafts are configured with the cylinder head of internal combustion engine, two
Bar camshaft controls intake valve and exhaust valve respectively.For each cylinder of engine system,
There are two intake valves and two exhaust valves (amounting to four valves) respectively.In the present invention,
Relate only to two of which intake valve.
In addition, by taking four cylinder engine as an example, the engine system of four cylinder engine has an air inlet discrimination
Pipe, it is convex that each cylinder in four cylinders is respectively provided with two intake valves, two exhaust valves and four
Wheel, each cam are correspondingly arranged with each valve (intake valve or exhaust valve).That is,
The engine system of four cylinder engine is amounted to has 16 valves and 16 cams, above-mentioned 16
In valve, eight is intake valve, and eight is exhaust valve, in addition, in above-mentioned 16 cams,
Eight is admission cam, and eight is exhaust cam.An inlet manifold in engine system (or claim
For inlet manifold) four air intake branches are bifurcated into, the opening and closing of four air intake branches shares a camshaft.
In existing cylinder head CyH shown in Fig. 3 (a) ' on, with two intake valve IntV1 ',
IntV2 ' and two exhaust valve ExtV1 ', ExtV2 ', inlet manifold P of engine system 100 ' '
(or from inlet manifold it is diverged air intake branch) while with two intake valve IntV1 ', IntV2 '
Connection, thus, in inlet manifold P ' uniform mixed fresh air and EGR in (or air intake branch)
The gaseous mixture of gas is simultaneously via two intake valve IntV1 ', IntV2 ' into internal combustion engine 150 '
Combustion chamber.
On the other hand, in cylinder head CyH of the present invention shown in Fig. 3 (b), similarly with two
Individual intake valve (fresh air intake valve IntV1, EGR gas intake valve IntV2) and two
Exhaust valve ExtV1, ExtV2, inlet manifold P of engine system 100 are (or divided from inlet manifold
Branch off the air intake branch for) connect with the fresh air intake valve IntV1 in two intake valves, and give up
Gas recirculating system 200 EGR gas backstreamings pipe 210 (or from EGR gas backstreaming pipes it is diverged
EGR gas backstreaming arms) connect with the EGR gas intake valve IntV2 in two intake valves.Mat
This, the fresh air (not with EGR gas mixings) in inlet manifold P (or air intake branch) directly via
Fresh air enters the combustion chamber of internal combustion engine 150 with intake valve IntV1, while EGR gas backstreaming pipes
EGR gases (not mixing with fresh air) in 210 (or EGR gas backstreaming arms) directly via
EGR gases enter the combustion chamber of internal combustion engine 150 with intake valve IntV2.
Here, using Fig. 4 (a) and Fig. 4 (b), to two intake valve IntV1 (IntV1 '),
The opening and closing moment of IntV2 (IntV2 ') corresponding cam illustrates.Wherein, Fig. 4 (a) is to represent
Cam C1 ' corresponding with intake valve IntV1 ', IntV2 ' in the engine system 100 ' of prior art,
The figure of the start-up time of C2 ', Fig. 4 (b) be represent the present invention engine system 100 in air inlet gas
Door (fresh air intake valve IntV1, EGR gas intake valve IntV2) corresponding cam C1,
The figure of the start-up time of C2.
As shown in Fig. 4 (a), conventionally, as inlet manifold P of engine system 100 ' '
(or from inlet manifold it is diverged air intake branch) while with two intake valve IntV1 ', IntV2 '
Connection, therefore, two intake valve IntV1 ', the start-up times of IntV2 ' are necessary with close moment identical.
On the other hand, shown in such as Fig. 4 (b), in the present invention, due to the air inlet of engine system 100
Manifold P (or from inlet manifold it is diverged air intake branch) with fresh air intake valve IntV1
Connection, and the EGR gas backstreamings pipe 210 of gas recirculation system 200 is (or from EGR gas backstreaming pipes
It is diverged EGR gas backstreaming arms) connect with EGR gas intake valve IntV2, therefore, make
EGR gases with the start-up time of intake valve IntV2 earlier than fresh air intake valve IntV1 unlatching
Moment, so that EGR gases are introduced into the combustion chamber of internal combustion engine 150 than fresh air.
In Fig. 4 (b), it is indicated by the solid line with fresh air with the corresponding cam C1 of intake valve IntV1,
Cam C2 corresponding with EGR gas intake valve IntV2 is represented by dashed line.
In addition, using Fig. 5 (a) and Fig. 5 (b), to two intake valve IntV1 (IntV1 '),
The valve lift amount of IntV2 (IntV2 ') is illustrated.Wherein, Fig. 5 (a) represents prior art
Intake valve IntV1 ', the figure of the valve lift amount of IntV2 ' in engine system 100 ', Fig. 5 (b)
Be represent the present invention engine system 100 in intake valve IntV1, IntV2 valve lift amount
Figure.
As shown in Fig. 5 (a), two intake valve IntV1 ', IntV2 ' are basic to be opened simultaneously, while
Close, therefore, two intake valve IntV1 ', IntV2 ' lift amount it is essentially identical.
On the other hand, shown in such as Fig. 5 (b), make the start-up time of EGR gas intake valve IntV2
Earlier than the fresh air start-up time of intake valve IntV1, and in EGR gases intake valve IntV2
It is basic to open when arriving maximum (when the lift amount of EGR gases intake valve IntV2 is maximum), by fresh sky
Gas is opened with intake valve IntV1, is located at the ratio of EGR gases of cylinder bottom most after so entering cylinder
Greatly, fresh air is minimum.In addition, when fresh air intake valve IntV1 opens maximum substantially
When maximum (fresh air with the lift amount of intake valve IntV1), by EGR gases intake valve IntV2
Close, can so make into after cylinder positioned at cylinder upper strata (i.e. around spark plug) EGR gas ratios most
Little, fresh air is most.
In Fig. 4 (b), Fig. 5 (b), with EGR gases with intake valve IntV2 relative to fresh sky
Gas intake valve IntV1 is shown as a example by shifting to an earlier date 30 °, it is to be understood that, the EGR of the present invention
Gas intake valve IntV2 is not limited to 30 relative to the lead of fresh air intake valve IntV1
°, which can calculate above-mentioned lead according to the gas flow of EGR gases, air inflow of fresh air etc..
Hereinafter, the engine system 100 with gas recirculation system 200 with reference to Fig. 6, to the present invention
Control method illustrate.Fig. 6 is the engine system with gas recirculation system 200 to the present invention
The flow chart that the control method of system 100 is illustrated.
As shown in fig. 6, after above-mentioned flow process, (step S100) is judged to whether being imported with EGR gases.
When being judged as being imported with EGR gases (when being judged as "Yes" in step S200), to EGR
Gas flow is calculated (step S200).
Then, the lead (step S300) and intake valve for calculating the EGR gases importing moment is (fresh
Air intake valve IntV1 and EGR gas intake valve IntV2) start-up time (step S400).
The lead at moment is imported and in step S400 based on the EGR gases calculated in step S300
In the start-up time of intake valve IntV1, IntV2 that calculates, calculate EGR gases and import moment (step
Rapid S500).
Then, EGR gases intake valve IntV2 is controlled, so which is moved to when being imported with EGR gases
Corresponding target location (step S600) is carved, subsequently terminates above-mentioned flow process.
On the other hand, (it is judged as "No" in step S200 when being judged as not importing EGR gases
When), directly terminate above-mentioned flow process.
In addition, in above-mentioned steps S200, such as above-mentioned EGR gases can be calculated by following formula (1)
Amount.
QEGR=f1(Ne, Le) × Qu+ f2(Pi, Ti)……(1)
Wherein：
QEGR：The quality of EGR gases：
f1()：The basic proportionate relationship of EGR gas flows：
Le：The actual negative quantity of engine：
f2(,）The number of the negative and positive magnitude relation of EGR gases：
Ne：Actual engine speed：
Qn：The actual air inflow of engine：
Pi：Pressure in motor intake manifold：
Ti：Temperature in motor intake manifold：
In addition, in above-mentioned steps S500, such as above-mentioned EGR gas can be calculated by following formula (2)
Body imports the moment.
TEGR=f3(Ne, Le)+f4(QEGR)+Tair……(2)
Wherein：
TEGR：EGR gases import the moment：
T3（EGR gases import the fundamental relation at moment：
Tair：Engine live gas enters the moment：
f4()：The related importing moment correction of EGR gas flows：
The present invention is exemplarily described above in conjunction with accompanying drawing, it is clear that the present invention's implements simultaneously
It is not limited to the embodiments described above.Those of ordinary skill in the art will be readily apparent other advantages and
Modification.Therefore, in its wider range of aspect, the present invention is not limited to depicted herein and is retouched
The detail stated and representative embodiment.Therefore, it can without departing from such as appended claims and
On the premise of the spirit or scope of this general inventive concept that its equivalent is limited, various modification can be adapted.
In embodiments of the present invention, for example, it is illustrated by taking four cylinder engine as an example, but this
Invention is not limited to this, or single-cylinder engine, two cylinder etc. other any kind of
Motivation.
In addition, in embodiments of the present invention, for example to each cylinder with two intake valves and
The situation of two exhaust valves is illustrated, but the present invention is not limited to this, and each cylinder can also
Exhaust valve with the intake valves of more than three and more than three.
Claims (4)
1. a kind of engine system (100) with gas recirculation system (200), described to start
Machine system includes internal combustion engine (150) and tail gas discharging pipe (160), the gas recirculation system (200)
Including EGR gas backstreaming pipes (210), have in the cylinder head (CyH) of the internal combustion engine (150)
There are multiple intake valves (IntV1, IntV2) and multiple exhaust valves (ExtV1, ExtV2),
Characterized in that,
The inlet manifold (P) of the engine system (100) diverges from the inlet manifold (P)
The air intake branch for going out and the multiple intake valves (IntV1, IntV2) located at the cylinder head (CyH)
In fresh air with intake valve (IntV1) connect,
One end of the EGR gas backstreamings pipe (210) of the gas recirculation system (200) connects
Be connected to the midway of the tail gas discharging pipe (160), the other end with located at the cylinder head (CyH)
EGR gases in multiple intake valves (IntV1, IntV2) are connected with intake valve (IntV2),
EGR gases intake valve (IntV2) is relative to fresh air intake valve (IntV1)
The lead for specifying in advance.
2. there is the engine system of gas recirculation system (200) as claimed in claim 1
(100), it is characterised in that
The lead of the regulation is constant lead.
3. there is the engine system of gas recirculation system (200) as claimed in claim 1
(100), it is characterised in that
Amount based on the fresh air flowed in the inlet manifold (P) or the air intake branch and
The amount of the EGR gases of flowing in the EGR gas backstreamings pipe (210), calculates carrying for the regulation
Front amount.
4. one kind has the control method of the engine system (100) of gas recirculation system (200),
Characterized in that, including：
The step of judging to whether being imported with EGR gases；
When being judged as being imported with EGR gases, the EGR gas flowmeters calculated by EGR gas flows
Calculate step；
After the EGR gas flows calculation procedure, calculating EGR gases import carrying for the lead at moment
Front amount calculation procedure；
After the EGR gas flows calculation procedure, the intake valve of the start-up time of intake valve is calculated
Start-up time calculation procedure；
Based on the EGR gases that calculate in the lead calculation procedure import the moment lead and
The start-up time of the intake valve calculated in the intake valve start-up time calculation procedure,
Calculate the EGR gases importing moment calculation procedure that EGR gases import the moment；And
EGR gases according to calculating in EGR gases importing moment calculation procedure import the moment,
EGR gas intake valves in control intake valve, so as to which moves to lead with the EGR gases
Enter the EGR gas intake valve regulating steps of moment corresponding target location.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107201973A (en) * | 2017-07-27 | 2017-09-26 | 奇瑞汽车股份有限公司 | The gas recirculation system and its application method of a kind of gasoline supercharging engine and the automobile engine with it |
| WO2020062737A1 (en) * | 2018-09-26 | 2020-04-02 | 广州汽车集团股份有限公司 | Gasoline engine and combustion control method therefor |
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| CN107201973A (en) * | 2017-07-27 | 2017-09-26 | 奇瑞汽车股份有限公司 | The gas recirculation system and its application method of a kind of gasoline supercharging engine and the automobile engine with it |
| WO2020062737A1 (en) * | 2018-09-26 | 2020-04-02 | 广州汽车集团股份有限公司 | Gasoline engine and combustion control method therefor |
| CN110953096A (en) * | 2018-09-26 | 2020-04-03 | 广州汽车集团股份有限公司 | Gasoline engine and combustion control method thereof |
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