CN104847537B - A kind of engine breathing control system and control method - Google Patents
A kind of engine breathing control system and control method Download PDFInfo
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- CN104847537B CN104847537B CN201510167984.7A CN201510167984A CN104847537B CN 104847537 B CN104847537 B CN 104847537B CN 201510167984 A CN201510167984 A CN 201510167984A CN 104847537 B CN104847537 B CN 104847537B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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Abstract
The invention discloses a kind of engine breathing control system and control method, including Engine ECU, gas path control valve and dual action pump, exhaust gas by-pass valve is provided between exhaust main and blast pipe；Gas path control valve connects four gas circuits, four gas circuits are respectively the EGR being connected with blast pipe and introduce the bidirectional flow siphunculus air intake branch being connected with inlet manifold and the pressurization tracheae being connected with dual action pump that pipe is connected with air intake duct, and the other end of dual action pump is connected with air intake branch.Above-mentioned dual action pump, on the one hand strengthens the introducing ability of EGR exhaust as EGR pumps, realizes the stable regulation of EGR in the range of full working scope；On the other hand air is pressurizeed rapidly as electric air booster, improves the transient response performance of gas handling system.The break-make conversion and control function of different gas circuits is realized by a gas path control valve, engine is met and EGR gas or the different of fresh air is required, realize optimal power performance and discharge performance.
Description
Technical field
The present invention relates to a kind of engine performance exploitation control device and control method, particularly a kind of engine breathing
Control method.
Background technology
Along with the increasingly strict of Abgasgesetz, while engine power performance, economic performance is ensured, how effectively
Improve the power performance of engine and reduce engine emission as research and development field focus of attention.
The working cycles of engine are completed with multiple strokes, and intake and exhaust system is this open loop system of engine
Two important gas exchange border, the oxygen in system controls by air inlet system and exhaust system completely, decision engine power performance
Fuel injection amount heavy dependence enter system air amount number, therefore, air capacity just determines the dynamic property of engine.
The lifting most common method of dynamic property is to improve boost pressure, and usual engine uses exhaust-driven turbo-charger exhaust-gas turbo charger profit
Air inlet is pressurized with exhaust energy, air inflow larger after supercharging allows engine to spray into more fuel oils in cylinder, passes through
This mode lifts the power performance of engine.Sufficient fresh air is introduced, is conducive to the abundant combustion of engine cylinder fuel
Burn, while being also beneficial to reduce the discharge of particulate pollutant.Due to the complexity of engine application operating mode, various works are can adapt to
The variable geometry turbocharger of condition change is paid attention to, and as the aggravation of energy crisis is, it is necessary to enhanced compact engine is obtained
Power per liter higher, also just proposes requirement higher to pressure charging system, and multistage supercharging system is appeared in more and more gradually
In the middle of research, but the control system of multistage supercharging system is complicated, and cost is also higher.
But also integrally fired in such as cylinder along with many problems while reinforcing to engine using turbocharger
Burn rising, NOx discharge increase of temperature etc..In face of increasingly stricter Abgasgesetz, many technical measures are taken, its
In, it is particularly subject to pay attention to because waste gas recycling (EGR) can be greatly reduced NOx emission.EGR's is introduced into application is engineered
In the presence of certain difficulty, cycle gas can be controlled to be automatically drawn into air inlet pipe by a valve in naturally aspirated engine
To realize；On engine with supercharger, boost pressure is relatively low during Smaller load, can access supercharging by introducing waste gas before turbine
After device, waste gas is introduced by the advantage higher than fresh air pressure after supercharging of exhaust gas pressure before turbine, but EGR rate is subject to certain
Limitation, in high load capacity, the pressure after supercharging air is higher, and still can not be introduced exhaust gas into even with check valve.
On the engine of racing car and military specific use, high acceleration is needed in some cases.Because fuel is
High-energy liquid form, distributive value is easy to increase rapidly by original spraying system, but the air capacity of transient requirements is then difficult to completely
Foot, the bad response of transient state causes power performance to be lifted and is subject to certain restrictions.Additionally, the booster size of big-block engine
And weight also tends to also larger, the booster cavity volume thus brought is larger, and the inertia mass of rotor is larger.Accelerate in vehicle
During, due to the effect of inertia force, the air movement and rotor motion of turbocharger often exist it is certain delayed so that
Cause engine acceleration poor, the discharge performance in varying load process is also poor.
In general, the waste gas recycling egr system and turbo charge system on current engine cannot meet full working scope
In the range of dynamic property and discharge performance requirement, still there are many problems demands to solve.
The content of the invention
The technical problem to be solved in the present invention is directed to above-mentioned the deficiencies in the prior art, and provides a kind of engine breathing
Control system and control method, the engine breathing control system and control method can be realized using a gas path control valve
The break-make conversion and control function of different gas circuits, meets engine and EGR gas or the different of fresh air is required, is starting
After machine is rationally demarcated, optimal power performance and discharge performance is capable of achieving.
In order to solve the above technical problems, the technical solution adopted by the present invention is：
A kind of engine breathing control system, including Engine ECU, exhaust-driven turbo-charger exhaust-gas turbo charger, gas path control valve and double
Effect pump, exhaust-driven turbo-charger exhaust-gas turbo charger includes turbine and compressor, and the air inlet of turbine is connected with exhaust main, turbine
Exhaust outlet is connected with blast pipe, and exhaust gas by-pass valve is provided between exhaust main and blast pipe；The air inlet of compressor and sky
Gas air inlet pipe is connected, and the exhaust outlet of compressor is connected with inlet manifold；Gas path control valve is connected with four gas circuits, four gas
Road is respectively the EGR being connected with blast pipe and introduces bidirectional flow siphunculus and the inlet manifold's phase that pipe is connected with air intake duct
The air intake branch of connection and the pressurization tracheae being connected with dual action pump, the other end of dual action pump are connected with air intake branch；It is described
Engine ECU, under different rotating speeds and load, can switch the start and stop of dual action pump, gas path control valve and exhaust gas by-pass valve and open
Close, and then realize different intake and exhaust functions.
The Engine ECU can by controlling exhaust gas by-pass valve and gas path control valve in the aperture of each valve control gas
The size of body flow.
First position sensor is provided with the gas path control valve, the first position sensor can feed back and control gas circuit
The position of each valve and opening information in control valve.
Second place sensor is provided with the exhaust gas by-pass valve, the second place sensor can feed back and control waste gas
The position of by-passing valve and opening information.
The dual action pump is connected with the motor of adjustable speed.
A kind of engine breathing control method, Engine ECU is led to by gas with various path in gas path control valve
Disconnected conversion and control, can realize that low pressure EGR is introduced, high pressure EGR is introduced, waste gas pressurization is introduced, fresh air pressurization is introduced and and from
The intake and exhaust pattern of right intake and exhaust, specially：
Low pressure EGR is introduced：When engine load is not less than the correspondence external characteristics load condition of rotating speed 60%, and in blast pipe
When pressure is not less than 0.5bar with the difference of atmospheric pressure, exhaust gas by-pass valve is closed in Engine ECU control, and controls gas circuit to control
Valve conducting EGR introduces pipe and bidirectional flow siphunculus path；Waste gas mixes with the fresh air in air inlet pipe, and together enters compressor
In pressurizeed.
High pressure EGR is introduced：When engine load is less than the correspondence external characteristics load condition of rotating speed 60%, and exhaust overpressure
When difference with pressure in inlet manifold is not less than 0.5bar, exhaust gas by-pass valve is closed in Engine ECU control, and controls gas circuit control
Valve conducting EGR processed introduces pipe and air intake branch path, and waste gas is mixed in inlet manifold with the fresh air after pressurization.
Waste gas pressurization is introduced：When low pressure EGR is introduced, the pressure in blast pipe is less than 0.5bar with the difference of atmospheric pressure
When；Or high pressure EGR is introduced, when exhaust overpressure is less than 0.5bar with the difference of pressure in inlet manifold；Engine ECU control
Gas path control valve conducting EGR processed introduces pipe and pressurization tracheae path, after waste gas pressurizes through dual action pump, with the fresh air after pressurization
Mixed.
Fresh air pressurization is introduced：When the military or racing car pattern set in Engine ECU is opened, Engine ECU control
Gas path control valve processed conducting bidirectional flow siphunculus and pressurization tracheae path, part fresh air pressurizeed through dual action pump after with through compressor
The fresh air of pressurization is mixed.
Natural intake and exhaust：In the alarm of exhaust-driven turbo-charger exhaust-gas turbo charger unit failure or idling operation, Engine ECU control is opened
Exhaust gas by-pass valve, and control gas path control valve to turn on bidirectional flow siphunculus and air intake branch, realize starting for bypass turbocharger
Machine nature intake and exhaust.
When the low pressure EGR is introduced, high pressure EGR is introduced and waste gas pressurization is introduced, engine speed >=800r/min.
The inlet manifold's pressure sensor being connected with Engine ECU is provided with the inlet manifold.
The blast pipe pressure sensor being connected with Engine ECU is provided with the blast pipe.
When the high pressure EGR is introduced, the difference of pressure in exhaust overpressure and inlet manifold is as vented pipe pressure and passes
The difference of sensor institute's measuring pressure and inlet manifold's pressure sensor institute measuring pressure.
After the present invention is using said structure and method, by using a dual action pump and gas path control valve to air inlet system and exhaust system
It is controlled, following multiple target can be realized：
1）Above-mentioned dual action pump is driven by motor, and its operation is not influenceed by Engine ECU control by engine operating condition.It is logical
Circuit design is crossed, one side dual action pump can strengthen the introducing ability of EGR exhaust as EGR pumps, can be higher in admission pressure
Or start and idling operation realizes effective introducing of waste gas, it is achieved thereby that in the range of full working scope EGR stable regulation, can lead to
Cross control economic benefits and social benefits revolution speed, and then control the size of EGR exhaust pressure and exhausted air quantity, to realize the introducing of high and low pressure EGR gas circuits
Control；Another aspect dual action pump sends into cylinder after also air can rapidly be pressurizeed as electric air booster, improves air inlet
System's transient response performance, and the air inlet of abundance can be ensured in the case where some turbocharger cannot realize the operating mode of effective supercharging
Amount.
2）As needed, by the handoff functionality of pipe-line system, high pressure EGR can be realized, can also realizes low pressure EGR, it is full
Sufficient engine system in the demand of different pair of operation points EGR exhausts, realize the stabilization in the range of EGR exhaust full working scope introduce with it is big
The flexible modulation of scope；Solve the problems, such as the response lag caused by low pressure EGR loop long.
3）By the combination with former booster, the surge line of booster is avoided, realize air inlet pressure ratio high, improve air inlet
Amount, extends the efficient matching operating condition scope of former booster.
4）Pressure ratio can rapidly be increased, solve the problems, such as that the air capacity that turbocharger gas inertia is brought is delayed, it is full
The requirements of the special dimension to acceleration such as the military and racing car of foot, and vehicular engine power performance can be met and discharge performance will
Ask.
Brief description of the drawings
Fig. 1 shows a kind of structural representation of engine breathing control system of the invention；
Fig. 2 shows a kind of control flow chart of engine breathing control system of the invention.
Wherein have：1- engines；2- exhaust manifolds；3- exhaust mains；4- turbines；5- exhaust gas by-pass valves；6- is post-processed
Equipment；7- compressors；8- air filters；9- air intake ducts；10- inlet air flow gauge；11- inlet manifold；12- air
Cooler；13- air inlet pipe；14- inlet manifold；15-EGR introduces pipe；16-EGR coolers；17- gas path control valves；18- is two-way
Runner pipe；19- air intake branches；20- pressurization tracheaes；21- dual action pumps；22- motors；23- Engine ECUs；24- inlet manifold presses
Force snesor；25- exhaust main pressure sensors；26- blast pipe pressure sensors.
In addition, in Fig. 2, P26Represent blast pipe pressure sensor institute measuring pressure；P0Represent atmospheric pressure；P26-P0The row of expression
The difference of endotracheal pressure and atmospheric pressure；P24Represent inlet manifold's pressure sensor institute measuring pressure；P26-P24Represent exhaust
The difference of pressure in overpressure and inlet manifold.
Specific embodiment
The present invention is further detailed explanation with specific better embodiment below in conjunction with the accompanying drawings.
As shown in figure 1, a kind of engine breathing control system, including engine 1, Engine ECU 23, exhaust gas turbine
Booster, gas path control valve 17 and dual action pump 21.
One end of engine 1 is connected with air inlet pipe 13 by inlet manifold 14, and aerial cooler is provided with air inlet pipe 13
12, the other end of air inlet pipe 13 is connected with inlet manifold 11.The other end of engine 1 is connected with exhaust by exhaust manifold 2
House steward 3.Inlet manifold's pressure sensor 24 is preferably provided with inlet manifold 11, the pressure for detecting fluid in inlet manifold 11
Power, and by institute's measuring pressure, Engine ECU 23 is passed in time.Exhaust main pressure sensing is preferably provided with exhaust main 3
Device 25, the pressure for detecting fluid in exhaust main 3, and by institute's measuring pressure, Engine ECU 23 is passed in time.
Exhaust-driven turbo-charger exhaust-gas turbo charger includes turbine 4 and compressor 7, and the air inlet of turbine 4 is connected with exhaust main 3,
The exhaust outlet of turbine 4 is connected with blast pipe, and exhaust gas by-pass valve 5 is provided between exhaust main 3 and blast pipe.Blast pipe
On be preferably provided with blast pipe pressure sensor 26, the pressure for detecting exhaust tube fluid and by institute's measuring pressure, is passed in time
Pass Engine ECU 23.
The air inlet of compressor 7 is connected with air intake duct 9, and air filter 8 is preferably provided with air intake duct 9
With inlet air flow gauge 10.The exhaust outlet of compressor 7 is connected with inlet manifold 11.
Gas path control valve 17 is connected with four gas circuits, four gas circuits be respectively the EGR being connected with blast pipe introduce pipe 15,
Air intake branch 19 that the bidirectional flow siphunculus 18 being connected with air intake duct 9 is connected with inlet manifold 11 and with dual action pump 21
The pressurization tracheae 20 being connected, the other end of dual action pump 21 is connected with air intake branch 19.
Above-mentioned EGR to be introduced and be preferably provided with cooler for recycled exhaust gas 16 on pipe 15；Above-mentioned bidirectional flow siphunculus 18 has two circulation sides
To b → e flow directions and two circulating directions of e → b respectively shown in Fig. 1；Above-mentioned gas path control valve 17 is preferably four-way control
Valve, four valves are respectively a, b, c and the d indicated clockwise in Fig. 1, and wherein a valves correspondence EGR introduces pipe 15, b valves correspondence
Bidirectional flow siphunculus 18, c valves correspondence air intake branch 19, d valves correspondence pressurization tracheae 20.
Above-mentioned Engine ECU 23 under different rotating speeds and load, can pass through control according to the advance control flow demarcated
The aperture of each valve controls the size of gas flow in exhaust gas by-pass valve processed 5 and gas path control valve 17.
Further, first position sensor is provided with above-mentioned gas path control valve 17, the first position sensor can feed back
With the position of each valve and opening information in control gas path control valve 17.
Second place sensor is provided with above-mentioned exhaust gas by-pass valve 5, the second place sensor can feed back and control useless
The position of gas by-passing valve 5 and opening information.
Above-mentioned dual action pump 21 is connected with the motor 22 of adjustable speed, realizes the economic benefits and social benefits function of compressed exhaust gas or fresh air.
A kind of control method that intake and exhaust are carried out using above-mentioned engine intake and exhaust system, as shown in Fig. 2 Engine ECU
23 can be according to the control flow demarcated in advance, under different rotating speeds and load, by logical to gas with various in gas path control valve 17
The break-make conversion and control on road, can realize that low pressure EGR is introduced, high pressure EGR is introduced, waste gas pressurization is introduced, fresh air pressurization is introduced
With several patterns of natural intake and exhaust.
Under different rotating speeds and load condition, the control flow according to advance demarcation is to intake and exhaust system for Engine ECU 23
Each device in system is controlled, and actual running status is monitored, and the control flow demarcated in advance is as shown in Figure 2.
Below by taking 11 liter of 6 cylinder electric-controlled co-rail diesel engine of certain type as an example, the tool of intake and exhaust is carried out to engine intake and exhaust system
Body controlling means are as follows：
1. low pressure EGR is introduced
The external characteristics load condition of rotating speed 60% is corresponded to when engine load is not less than, preferred engine rotating speed >=800r/min,
And the difference P of the pressure in blast pipe and atmospheric pressure26-P0When being not less than 0.5bar（Namely blast pipe pressure sensor is surveyed
Pressure P26With atmospheric pressure P0Between difference >=0.5bar when）, exhaust gas by-pass valve 5 is closed in the control of Engine ECU 23, and is controlled
The conducting of gas path control valve processed 17 EGR introduces pipe 15 and the path of bidirectional flow siphunculus 18, namely conducting a-b paths；Waste gas and air inlet pipe 9
In fresh air mixing, and together into being pressurizeed in compressor 7.
2. high pressure EGR is introduced
The external characteristics load condition of rotating speed 60% is corresponded to when engine load is less than, preferred engine rotating speed >=800r/min, and
The difference P of pressure in exhaust overpressure and inlet manifold26-P24When being not less than 0.5bar（Namely blast pipe pressure sensor institute
Measuring pressure P26With inlet manifold's pressure sensor institute measuring pressure P24Between difference >=0.5bar when）, Engine ECU 23 controls
Exhaust gas by-pass valve 5 is closed, and controls gas path control valve 17 to turn on EGR and introduce pipe 15 and the path of air intake branch 19, namely conducting a-c
Path, waste gas is mixed in inlet manifold 11 with the fresh air after pressurization.
3. waste gas pressurization is introduced（Namely electronic pressure EGR）
1）When above-mentioned low pressure EGR is introduced, the difference P of pressure and atmospheric pressure in blast pipe26-P0Less than 0.5bar；
2）When above-mentioned high pressure EGR is introduced, the difference P of pressure in exhaust overpressure and inlet manifold26-P24It is less than
0.5bar；
When there are above-mentioned two situations for the moment, Engine ECU 23 will close exhaust gas by-pass valve 5, and control gas circuit to control
Valve 17 conducting EGR introduce pipe 15 and pressurization the path of tracheae 20, namely conducting a-d paths, waste gas through dual action pump 21 pressurize after, with plus
Fresh air after pressure is mixed.
4. fresh air pressurization is introduced
When the military or racing car pattern set in Engine ECU 23 is opened, Engine ECU 23 will close exhaust gas bypass
Valve 5, and control gas path control valve 17 to turn on bidirectional flow siphunculus 18 and the pressurization path of tracheae 20, namely conducting b-d paths, part is new
Fresh air is mixed after being pressurizeed through dual action pump 21 with the fresh air pressurizeed through compressor 7.
5. natural intake and exhaust
When exhaust-driven turbo-charger exhaust-gas turbo charger unit failure or idling operation, exhaust gas by-pass valve 5 is opened in the control of Engine ECU 23,
And control gas path control valve 17 to turn on bidirectional flow siphunculus 18 and the path of air intake branch 19, namely conducting b-c paths, realize bypass whirlpool
Take turns the engine nature intake and exhaust of booster.
The present invention has hereinbefore had been described in detail to engine intake and exhaust system and various intake and exhaust control methods,
Person should be understood that to be familiar with engine technology：When the gas circuit that different engines are carried out with intake and exhaust is controlled, need to be with corresponding
Engine calibration parameter is defined, this patent specific to be combine high pressure EGR, low pressure EGR, force EGR, spontaneous combustion enter row
The multifunction system and control method of supercharging are forced in gas, air inlet turbine supercharging and air inlet, therefore without controlling specific ECU
And set with reference to limit value.It should be noted that when, it is all with the equivalent change of the present invention and displacement, all should fall in scope of the invention
Within.
Claims (9)
1. a kind of engine breathing control system, it is characterised in that：Including Engine ECU（23）, exhaust-driven turbo-charger exhaust-gas turbo charger, gas
Road controls valve（17）And dual action pump（21）, the exhaust-driven turbo-charger exhaust-gas turbo charger include turbine（4）And compressor（7）, turbine（4）
Air inlet and exhaust main（3）It is connected, turbine（4）Exhaust outlet be connected with blast pipe, the exhaust main（3）With
Exhaust gas by-pass valve is provided between blast pipe（5）；The compressor（7）Air inlet and air intake duct（9）It is connected, calms the anger
Machine（7）Exhaust outlet and inlet manifold（11）It is connected；The gas path control valve（17）It is connected with four gas circuits, four gas circuits point
It is not that the EGR being connected with blast pipe introduces pipe（15）With air intake duct（9）The bidirectional flow siphunculus being connected（18）With enter
Gas house steward（11）The air intake branch being connected（19）And with dual action pump（21）The pressurization tracheae being connected（20）, dual action pump（21）'s
The other end and air intake branch（19）It is connected；The Engine ECU（23）, economic benefits and social benefits can be switched under different rotating speeds and load
Pump（21）, gas path control valve（17）And exhaust gas by-pass valve（5）Start and stop and opening and closing, and then realize different intake and exhaust functions；Institute
State Engine ECU（23）Can be by controlling exhaust gas by-pass valve（5）And gas path control valve（17）In the aperture of each valve control gas
The size of body flow.
2. engine breathing control system according to claim 1, it is characterised in that：The gas path control valve（17）On
First position sensor is provided with, the first position sensor can feed back and control gas path control valve（17）In each valve position
And opening information.
3. engine breathing control system according to claim 1, it is characterised in that：The exhaust gas by-pass valve（5）On
Second place sensor is provided with, the second place sensor can feed back and control exhaust gas by-pass valve（5）Position and aperture letter
Breath.
4. engine breathing control system according to claim 1, it is characterised in that：The dual action pump（21）With it is adjustable
The motor of speed（22）It is connected.
5. a kind of engine breathing control method, it is characterised in that：Engine ECU（23）By to gas path control valve（17）In
The break-make conversion and control of gas with various path, can realize that low pressure EGR is introduced, high pressure EGR is introduced, waste gas pressurization is introduced, fresh sky
Gas pressurization introduces the intake and exhaust pattern with natural intake and exhaust, specially：
--- low pressure EGR is introduced：When engine load is not less than the correspondence external characteristics load condition of rotating speed 60%, and in blast pipe
When pressure is not less than 0.5bar with the difference of atmospheric pressure, Engine ECU（23）Exhaust gas by-pass valve is closed in control（5）, and control
Gas path control valve（17）Conducting EGR introduces pipe（15）With bidirectional flow siphunculus（18）Path；Waste gas and air inlet pipe（9）In fresh sky
Gas mixes, and together enters compressor（7）In pressurizeed；
--- high pressure EGR is introduced：When engine load is less than the correspondence external characteristics load condition of rotating speed 60%, and exhaust overpressure
When difference with pressure in inlet manifold is not less than 0.5bar, Engine ECU（23）Exhaust gas by-pass valve is closed in control（5）, and control
Gas path control valve processed（17）Conducting EGR introduces pipe（15）And air intake branch（19）Path, waste gas is in inlet manifold（11）In with plus
Fresh air after pressure is mixed；
--- waste gas pressurization is introduced：When low pressure EGR is introduced, the pressure in blast pipe is less than 0.5bar with the difference of atmospheric pressure
When；Or high pressure EGR is introduced, when exhaust overpressure is less than 0.5bar with the difference of pressure in inlet manifold；Engine ECU
（23）Control gas path control valve（17）Conducting EGR introduces pipe（15）With pressurization tracheae（20）Path, waste gas is through dual action pump（21）Plus
After pressure, mixed with the fresh air after pressurization；
--- fresh air pressurization is introduced：Work as Engine ECU（23）When the military or racing car pattern of middle setting is opened, engine
ECU（23）Control gas path control valve（17）Conducting bidirectional flow siphunculus（18）With pressurization tracheae（20）Path, part fresh air warp
Dual action pump（21）After pressurization with through compressor（7）The fresh air of pressurization is mixed；
--- natural intake and exhaust：In the alarm of exhaust-driven turbo-charger exhaust-gas turbo charger unit failure or idling operation, Engine ECU（23）Control
Open exhaust gas by-pass valve（5）, and control gas path control valve（17）Conducting bidirectional flow siphunculus（18）And air intake branch（19）, realize other
The engine nature intake and exhaust of logical turbocharger.
6. engine breathing control method according to claim 5, it is characterised in that：The low pressure EGR is introduced, high pressure
EGR introduce and waste gas pressurize introduce when, engine speed >=800r/min.
7. engine breathing control method according to claim 5, it is characterised in that：The inlet manifold（11）On set
It is equipped with and Engine ECU（23）The inlet manifold's pressure sensor being connected（24）.
8. engine breathing control method according to claim 7, it is characterised in that：Be provided with the blast pipe with
Engine ECU（23）The blast pipe pressure sensor being connected（26）.
9. engine breathing control method according to claim 8, it is characterised in that：When the high pressure EGR is introduced, row
The difference of pressure, as blast pipe pressure sensor institute measuring pressure in intratracheal pressure and inlet manifold（P26）Pressed with inlet manifold
Force snesor institute measuring pressure（P24）Difference.
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| US10995709B2 (en) * | 2017-07-05 | 2021-05-04 | Honda Motor Co., Ltd. | Engine peripheral structure |
| 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 |
| CN107605590A (en) * | 2017-10-30 | 2018-01-19 | 潍柴动力股份有限公司 | The Electron pressurizing unit control system and Electron pressurizing unit of a kind of engine |
| CN114704409B (en) * | 2022-04-15 | 2023-07-18 | 潍柴动力股份有限公司 | Air system and air system control method |
| CN116220933B (en) * | 2023-05-10 | 2023-08-18 | 潍柴动力股份有限公司 | EGR pump control method and device, vehicle and storage medium |
| CN117418969B (en) * | 2023-12-18 | 2024-03-19 | 潍柴动力股份有限公司 | EGR system and control method thereof |
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| EP2156030A1 (en) * | 2007-05-14 | 2010-02-24 | Borgwarner Inc. | Method of controlling a turbocharger |
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| US9399956B2 (en) * | 2013-03-15 | 2016-07-26 | GM Global Technology Operations LLC | Phaser control systems and methods for balancing mean effective pressure |
| CN203892005U (en) * | 2014-05-06 | 2014-10-22 | 湖南天雁机械有限责任公司 | Turbo charging mechanism with two-position two-way pulse width adjusting valve |
| CN104061062B (en) * | 2014-06-06 | 2016-09-07 | 上海交通大学 | Intake and exhaust with double venturi regulate system |
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2015
- 2015-04-10 CN CN201510167984.7A patent/CN104847537B/en not_active Expired - Fee Related
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