CN103352776A - Continuous controllable modularized exhaust gas recirculation structure - Google Patents
Continuous controllable modularized exhaust gas recirculation structure Download PDFInfo
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- CN103352776A CN103352776A CN2013102773758A CN201310277375A CN103352776A CN 103352776 A CN103352776 A CN 103352776A CN 2013102773758 A CN2013102773758 A CN 2013102773758A CN 201310277375 A CN201310277375 A CN 201310277375A CN 103352776 A CN103352776 A CN 103352776A
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- egr
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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
Abstract
The invention aims at providing a continuous controllable modularized exhaust gas recirculation structure which comprises an exhaust gas recirculation unit. The exhaust gas recirculation unit comprises a gas storage tank, an EGR exhaust pipe and an EGR gas inlet pipe. The gas storage tank is respectively communicated with the EGR exhaust pipe and the EGR gas inlet pipe. The EGR gas inlet pipe is communicated with an exhaust manifold of a cylinder of a diesel engine or an exhaust passage in a cylinder cover of the cylinder. The EGR exhaust pipe is communicated with a gas inlet manifold of the cylinder of the diesel engine or a gas inlet passage in the cylinder cover of the cylinder. The gas storage tank is a container with the cooling capacity. The continuous controllable modularized exhaust gas recirculation structure is a novel scheme designed based on the structure of each isolated cylinder, modularized installation of an EGR can be achieved according to different machine types and different numbers of cylinders, in addition, the EGR with different numbers of cylinders can be selected and controlled to participate in work according to the operating conditions of a diesel engine, continuous control over whole equipment is achieved, a better effect can be achieved on an internal combustion engine with multiple cylinders, and the ERG rate of each isolated cylinder can be controlled.
Description
Technical field
What the present invention relates to is a kind of diesel engine, specifically the exhaust gas recirculation structure of diesel engine.
Background technique
Day by day rigorous along with the engine exhaust rules; the discharging that various technology reduce diesel engine is is constantly researched and developed in each Diesel Engine Plant commercial city; especially reduce the discharging of NOx; the noxious emission of motor is a main source that causes pollution of atmosphere; along with the significance of environmental protection problem increases increasingly, reduce the important directions that this target of Engine's Harmful Emission becomes development of engine in the world today.Along with the consumption of world oil goods rises year by year, international oil price is high, and the Economy of diesel engine is outstanding day by day, this so that diesel engine in power train in vehicle application in occupation of consequence more and more, in shipbuilding industry, be subjected to the Abgasgesetz restriction also more serious.So carry out the research of Harmful Emissions of Diesel Engine controlling method, it is the person's that is engaged in the Design Technology for Diesels top priority.So a kind of in a kind of control technique that reduces noxious emission---gas recirculation system (EGR) beginning extensive use.
At present, on the diesel engine on automobile-used and the engineering machinery, nearly all adopted EGR, and big marine diesel engine begins also to use, settle but difference realizes the modularization on diesel engine, can not realize that in addition continuous controlled EGR leads.
Because EGR enters in the cylinder more again by the waste gas that makes a part of diesel engine, can suppress the generation of NOx in the combustion process, reach the purpose that reduces the NOx discharging.In the EGR form of using now, all be based on the global design of diesel engine, by the EGR valve that arranges a part of waste gas in the exhaust manifold is introduced among the intake manifold, in the middle of pipeline, also to add intercooler and make the exhaust cooling, can be incorporated into waste gas before the gas compressor, also can guide to after the gas compressor, these two kinds of designs all are to carry out on the basis of complete machine, need to arrange and design according to the form of type and the position of intake and exhaust pipeline, design process is complicated to bother, and can not improve the versatility of type.
Summary of the invention
The object of the present invention is to provide based on independent each cylinder on the diesel engine is research object, realizes a kind of continuous mode-controller blocking exhaust gas recirculation structure of EGR for each single cylinder.
The object of the present invention is achieved like this:
A kind of continuous mode-controller blocking exhaust gas recirculation structure of the present invention, it is characterized in that: comprise the EGR unit, the EGR unit comprises expansion box, EGR outlet pipe, EGR suction tude, expansion box is communicated with respectively EGR outlet pipe and EGR suction tude, the EGR suction tude is communicated with the gas exhaust manifold of a cylinder of diesel engine or the air outlet flue in the cylinder head, the EGR outlet pipe is communicated with the intake manifold of this cylinder of diesel engine or the intake duct in the cylinder head, and described expansion box is the container that possesses cooling capacity.
The present invention can also comprise:
1, the EGR exhaust solenoid valve is installed on the EGR outlet pipe, the EGR air inlet electromagnetic valve is installed on the EGR suction tude, difference mounting diesel engine speed probe on the diesel engine, the injection pump rack position transducer, the valve cam phase detector, the exhaust manifold pressure sensor, intake manifold pressure sensor, the expansion box of EGR unit is installed the expansion box pressure transducer, the diesel engine speed sensor, the injection pump rack position transducer, the valve cam phase detector, the exhaust manifold pressure sensor, intake manifold pressure sensor and expansion box pressure transducer all connect controller, and controller connects and control EGR exhaust solenoid valve and EGR air inlet electromagnetic valve.
2, described EGR unit is at least two, match controller of different EGR units shareds and the diesel engine speed sensor that matches with controller, injection pump rack position transducer, valve cam phase detector, exhaust manifold pressure sensor, intake manifold pressure sensor from different diesel engine cylinder respectively.
Advantage of the present invention is: the present invention is based on each Indivudual cylinder structure and the New Scheme that designs, install according to the difference of type and the different modularizations of EGR that can both realize of cylinder number, and can select the EGR of the different cylinder numbers of control to participate in work according to the operating conditions of diesel engine, realized the continuous control on entire machine, better for the internal-combustion engine effect that cylinder number is more, can also realize that each single cylinder EGR leads controlled.
Description of drawings
Fig. 1 is structural representation of the present invention.
Embodiment
For example the present invention is described in more detail below in conjunction with accompanying drawing:
In conjunction with Fig. 1, structure of the present invention is as follows:
Gas exhaust manifold 1 connects EGR suction tude 11, be connected to an expansion box 9 that cooling capacity is arranged by EGR air inlet electromagnetic valve 10, then are connected with the EGR outlet pipe by EGR exhaust solenoid valve 8 and are connected with intake manifold 6, by diesel engine speed sensor 15, injection pump rack position transducer 16, the distribution cam axle phase place turns sensor 17, exhaust manifold pressure sensor 18, the signal of intake manifold pressure sensor 19 and expansion box pressure transducer 20 inputs to controller 14, controller output fill order is to EGR air inlet electromagnetic valve 10 and EGR exhaust solenoid valve 8, and the EGR that the Push And Release of two valves of control is controlled under the different operating modes leads.
Each cylinder is an independent module, if type is multi-cylinder footpath, each cylinder is installed apparatus of the present invention, can be according to the operating mode of machine operation, and the EGR number of control and participate in work, and then can control the EGR of complete machine, realize modularization and controlled continuously.
When diesel engine begins in exhaust process, piston is also in downward operation, at this moment mainly be subjected to the firing pressure in the cylinder that waste gas is discharged from outlet valve 13, this moment, intake process did not also begin, suction valve 12 cuts out, when exhaust manifold pressure sensor 18 collection signals during greater than intake manifold pressure sensor 19 signal, this moment, exhaust pressure was greater than suction pressure, these Time Controller 14 output orders make EGR air inlet electromagnetic valve 10 be in opening state, make the part waste gas in the gas exhaust manifold 1 enter expansion box 9 through EGR suction tude 11 and EGR air inlet electromagnetic valve 10, other waste gas is arranged to turbine 2 actings; When exhaust manifold pressure sensor 18 collection signals during less than intake manifold pressure sensor 19 signal, exhaust pressure is during less than suction pressure, and these Time Controller 14 output orders make EGR air inlet electromagnetic valve 10 be in closed condition; When intake process begins, INO, upwards operation of piston 4, this moment, exhaust process did not also finish, when piston 4 moves downwards from top dead center, under the effect of the pump gas of piston 4, produce very large negative pressure in the cylinder, when the distribution cam axle phase place turns sensor 17 and measures exhaust valve closure, controller 14 output orders make EGR exhaust solenoid valve 8 be in opening state, this moment in the expansion box 9 waste gas and intake process in high-pressure air after cold in gas compressor 3 superchargings and the intercooler 5 suck together in the cylinder; When expansion box pressure transducer 18 collection signals during less than intake manifold pressure sensor 19 signal, controller 14 output orders make EGR exhaust solenoid valve 8 be in closed condition, if the distribution cam axle phase place turns sensor 17 when measuring suction valve and closing, controller 14 output orders make EGR exhaust solenoid valve 8 be in closed condition.Determine the residing operating mode of diesel engine by diesel engine speed sensor 15 and injection pump rack position transducer 16, then turn the opening and closing moment that sensor 17 is controlled EGR exhaust solenoid valve 8 by controller 14 and distribution cam axle phase place.Realize the EGR of single cylinder by the synthetic operation of all parts, can carry out Comprehensive Control according to different needs.
Claims (3)
1. continuous mode-controller blocking exhaust gas recirculation structure, it is characterized in that: comprise the EGR unit, the EGR unit comprises expansion box, EGR outlet pipe, EGR suction tude, expansion box is communicated with respectively EGR outlet pipe and EGR suction tude, the EGR suction tude is communicated with the gas exhaust manifold of a cylinder of diesel engine or the air outlet flue in the cylinder head, the EGR outlet pipe is communicated with the intake manifold of this cylinder of diesel engine or the intake duct in the cylinder head, and described expansion box is the container that possesses cooling capacity.
2. a kind of continuous mode-controller blocking exhaust gas recirculation structure according to claim 1, it is characterized in that: the EGR exhaust solenoid valve is installed on the EGR outlet pipe, the EGR air inlet electromagnetic valve is installed on the EGR suction tude, difference mounting diesel engine speed probe on the diesel engine, the injection pump rack position transducer, the valve cam phase detector, the exhaust manifold pressure sensor, intake manifold pressure sensor, the expansion box of EGR unit is installed the expansion box pressure transducer, the diesel engine speed sensor, the injection pump rack position transducer, the valve cam phase detector, the exhaust manifold pressure sensor, intake manifold pressure sensor and expansion box pressure transducer all connect controller, and controller connects and control EGR exhaust solenoid valve and EGR air inlet electromagnetic valve.
3. a kind of continuous mode-controller blocking exhaust gas recirculation structure according to claim 1 and 2, it is characterized in that: described EGR unit is at least two, match controller of different EGR units shareds and the diesel engine speed sensor that matches with controller, injection pump rack position transducer, valve cam phase detector, exhaust manifold pressure sensor, intake manifold pressure sensor from different diesel engine cylinder respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2013102773758A CN103352776A (en) | 2013-07-03 | 2013-07-03 | Continuous controllable modularized exhaust gas recirculation structure |
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| CN2013102773758A CN103352776A (en) | 2013-07-03 | 2013-07-03 | Continuous controllable modularized exhaust gas recirculation structure |
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| CN103352776A true CN103352776A (en) | 2013-10-16 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015143741A1 (en) * | 2014-03-27 | 2015-10-01 | 天津大学 | Systematic device for controlling combustion noise of common rail engine in transient operating conditions |
| CN105604684A (en) * | 2015-12-30 | 2016-05-25 | 芜湖恒耀汽车零部件有限公司 | Automobile gas distribution and exhaust system |
| CN106812624A (en) * | 2015-11-20 | 2017-06-09 | 现代自动车株式会社 | The cylinder cover integral with exhaust manifold and cooler for recycled exhaust gas |
| CN108167082A (en) * | 2017-12-25 | 2018-06-15 | 潍柴动力股份有限公司 | A kind of EGR rate control system and method |
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| CN201412231Y (en) * | 2009-06-05 | 2010-02-24 | 江苏星耀电机有限公司 | Electric control system of diesel engine |
| CN101705873A (en) * | 2009-11-09 | 2010-05-12 | 哈尔滨工程大学 | Speed-regulating device and speed-regulating method for sequential supercharged diesel engine |
| CN201496154U (en) * | 2009-06-11 | 2010-06-02 | 上海柴油机股份有限公司 | Device for controlling exhaust gas recirculation system of traditional diesel engine |
| US7886728B1 (en) * | 2009-03-13 | 2011-02-15 | The United States Of America As Represented By The Secretary Of The Navy | System and method for controlling the power output of an internal combustion engine |
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2013
- 2013-07-03 CN CN2013102773758A patent/CN103352776A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20080053418A1 (en) * | 2006-08-30 | 2008-03-06 | Andrews Eric B | Closed loop EGR control method and system using water content measurement |
| CN201236747Y (en) * | 2008-07-29 | 2009-05-13 | 施远强 | Electronic speed-regulator for vehicular diesel engine |
| US7886728B1 (en) * | 2009-03-13 | 2011-02-15 | The United States Of America As Represented By The Secretary Of The Navy | System and method for controlling the power output of an internal combustion engine |
| CN201412231Y (en) * | 2009-06-05 | 2010-02-24 | 江苏星耀电机有限公司 | Electric control system of diesel engine |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015143741A1 (en) * | 2014-03-27 | 2015-10-01 | 天津大学 | Systematic device for controlling combustion noise of common rail engine in transient operating conditions |
| CN106812624A (en) * | 2015-11-20 | 2017-06-09 | 现代自动车株式会社 | The cylinder cover integral with exhaust manifold and cooler for recycled exhaust gas |
| CN106812624B (en) * | 2015-11-20 | 2020-06-23 | 现代自动车株式会社 | Cylinder head integrated with exhaust manifold and EGR cooler |
| CN105604684A (en) * | 2015-12-30 | 2016-05-25 | 芜湖恒耀汽车零部件有限公司 | Automobile gas distribution and exhaust system |
| CN108167082A (en) * | 2017-12-25 | 2018-06-15 | 潍柴动力股份有限公司 | A kind of EGR rate control system and method |
| CN108167082B (en) * | 2017-12-25 | 2020-06-02 | 潍柴动力股份有限公司 | EGR rate control system and method |
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Application publication date: 20131016 |