CN101503983A - Pure oxygen air-intake oxygen-enriched combustion control method and control system for internal combustion engine - Google Patents
Pure oxygen air-intake oxygen-enriched combustion control method and control system for internal combustion engine Download PDFInfo
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- CN101503983A CN101503983A CNA200910068088XA CN200910068088A CN101503983A CN 101503983 A CN101503983 A CN 101503983A CN A200910068088X A CNA200910068088X A CN A200910068088XA CN 200910068088 A CN200910068088 A CN 200910068088A CN 101503983 A CN101503983 A CN 101503983A
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- pure oxygen
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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 relates to a method and a system for controlling pure oxygen air input oxygen-rich combustion of an explosive motor, which adopt recirculation waste gas as part of the total air input of the explosive motor and adopt pure oxygen as the remaining part of the total air input of the explosive motor to achieve the combination of high waste gas recirculation and pure oxygen air input and the oxygen-rich combustion, so that the advantages of the modes are complementary with each other to achieve the aim of controlling the exhausts of NoX, CO, HC and PM of a diesel engine, and simultaneously ensure that the combustion in an engine cylinder is smooth and controllable, improve the power output of the explosive motor and reduce the fuel consumption.
Description
Technical field
The invention belongs to field of internal combustion engine, pure oxygen air-intake oxygen-enriched combustion control method of particularly a kind of explosive motor and control system.
Background technique
At present, environmental pollution is just becoming a social concern that the crowd paid close attention to, and it is strict that the diesel emission rules that various countries work out are tending towards year by year.If the harmful emission of diesel engine owner is NO
XAnd fine particle (soot and dissolved organic matter), because its purification method is conflicted and contradiction mutually.Bring difficulty to satisfy Abgasgesetz comprehensively.Engine research person adopts various technology, as straight spray supercharging, in measures such as cold, high-pressure injection, exhaust gas recirculation (EGR), electronic control, low lubrication oil consumption, brought certain benefit to reducing emission level, be still a technical barrier but fundamentally address the above problem.As everyone knows, EGR can reduce discharged nitrous oxides, but high EGR means charge dilution and O
2Concentration reduces, and can cause burn deterioration, thereby cause diesel engine work decreased performance, and the soot level rises.In theory, the pure oxygen air inlet can make carbon smoke exhaust descend, but the air inlet of simple use pure oxygen then can cause O in the cylinder
2Concentration increases, and burning sharply and fully can cause combustion temperature too high, NO
XEmission level raises, and excessive to the ablation of oil nozzle and firing chamber, the negative factor that the rate of pressure rise and combustion noise are crossed high aspect can't guarantee that all the work of motor is smooth-going and reliable, so the pure oxygen air inlet can't be used on motor always.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, provide a kind of explosive motor pure oxygen air-intake oxygen-enriched combustion control method, exhaust gas recirculation is combined as the whole air inlets of explosive motor with the pure oxygen air inlet, make its mutual supplement with each other's advantages, reach and reduce explosive motor NO
XWith the purpose of fine particle discharging, can allow engine operation normal simultaneously, guarantee that the burning in the cylinder is steadily controlled.
The present invention solves the problems of the technologies described above and is achieved through the following technical solutions:
The pure oxygen air-intake oxygen-enriched combustion control method of a kind of explosive motor, adopt of the partial-air admission of part EGR gas as the whole air inlets of explosive motor, it is characterized in that: adopt the remainder air inlet of pure oxygen as the whole air inlets of explosive motor, wherein pure oxygen accounts for 21%~30% of whole air inflows, and EGR gas accounts for 79%~70% of whole air inflows.
And, adopt pure oxygen to be: to adopt the pure oxygen air supply source that pure oxygen is provided as the concrete steps of the remainder air inlet of the whole air inlets of explosive motor; Regulate the pure oxygen flow by modulating valve; With pure oxygen feed the voltage stabilizing blend tank with through voltage stabilizing, regulate the intake manifold who feeds explosive motor after flow, cooled EGR gas carry out fully mixed, voltage stabilizing.
And described pure oxygen air supply source is macromolecule oxygen segregating unit or pure oxygen storage device.
The pure oxygen air-intake oxygen-enriched combustion control system of a kind of explosive motor, comprise explosive motor and gas recirculation system, gas recirculation system is mainly by the exhaust surge tank that links to each other with internal combustion engine exhaust gas house steward outlet end, the back pressure valve and the EGR valve that are connected with the outlet of exhaust surge tank, the cooler for recycled exhaust gas that is connected with the EGR valve outlet port constitutes, the cooler for recycled exhaust gas outlet is connected with the explosive motor intake manifold, it is characterized in that: the intake manifold of explosive motor connects the outlet of a voltage stabilizing blend tank, one entrance point of this voltage stabilizing blend tank is connected with the pure oxygen air supply source, another entrance point of this voltage stabilizing blend tank is connected with the cooler for recycled exhaust gas outlet, between pure oxygen air supply source and voltage stabilizing blend tank the oxygen content modulating valve is installed.
And described pure oxygen air supply source is macromolecule oxygen segregating unit or pure oxygen storage device.
Advantage of the present invention and beneficial effect are:
1. the pure oxygen air-intake oxygen-enriched combustion control method of explosive motor of the present invention adopts high exhaust gas recirculation to combine with the pure oxygen air inlet, realizes oxygen-enriched combusting, makes its mutual supplement with each other's advantages, then can reach and control diesel engine NO simultaneously
X, CO, HC and PM discharging purpose, solve the repugnance on the strategy of the discharging of nitrogen oxygen and particulate control of motor in the past.
2. the pure oxygen air-intake oxygen-enriched combustion control system of explosive motor of the present invention, by on the explosive motor intake manifold, being communicated with the pure oxygen air supply system, thereby the realization pure oxygen combines with cycle gas, and can realize that by adjusting mixed gas oxygen content in the voltage stabilizing mixing tank is greater than 21% of normal air to oxygen content modulating valve, back pressure valve, EGR valve opening, thereby the realization oxygen-enriched combusting of motor, improve engine power output, reduce fuel consumption rate.Can be comparatively easily on existing explosive motor, realize, need not to engine cylinder cover, body, oil supply system, etc. critical piece and system make great change.
3. pure oxygen air-intake oxygen-enriched combustion control method of explosive motor of the present invention and control system can realize that high exhaust gas recirculation combines with the pure oxygen air inlet, realize oxygen-enriched combusting, reduce explosive motor NO thereby reach
XWith the purpose of fine particle discharging, can allow engine operation normal simultaneously, guarantee that the burning in the cylinder is steadily controlled.
Description of drawings
Fig. 1 is the schematic representation of control system of the present invention.
Embodiment
The invention will be further described below by specific embodiment, and following examples are descriptive, is not determinate, can not limit protection scope of the present invention with this.
The pure oxygen air-intake oxygen-enriched combustion control method of a kind of explosive motor, adopt of the partial-air admission of part EGR gas as the whole air inlets of explosive motor, its innovation part is: adopt the remainder air inlet of pure oxygen as the whole air inlets of explosive motor, its concrete steps are: adopt the pure oxygen air supply source that pure oxygen is provided, the pure oxygen air supply source is macromolecule oxygen segregating unit or pure oxygen storage device.Regulate the pure oxygen flow by modulating valve.With pure oxygen feed the voltage stabilizing blend tank with through voltage stabilizing, regulate the intake manifold who feeds explosive motor after flow, cooled EGR gas carry out fully mixed, voltage stabilizing.Wherein pure oxygen accounts for 21%~30% of whole air inflows, and EGR gas accounts for 79%~70% of whole air inflows.
Realize the pure oxygen air-intake oxygen-enriched combustion control system of a kind of explosive motor that above-mentioned controlling method adopts, comprise explosive motor 2 and gas recirculation system, gas recirculation system mainly is made of the exhaust surge tank 8 that links to each other with internal combustion engine exhaust gas house steward 3 outlet end, the back pressure valve 7 that is connected with exhaust surge tank outlet and EGR valve 9, the cooler for recycled exhaust gas 10 that is connected with the EGR valve outlet port, and cooler for recycled exhaust gas exports and is connected with explosive motor intake manifold 1.The innovation part of this control system is: the intake manifold of explosive motor connects the outlet of a voltage stabilizing blend tank 6, one entrance point of this voltage stabilizing blend tank is connected with pure oxygen air supply source 4, another entrance point of this voltage stabilizing blend tank is connected with the cooler for recycled exhaust gas outlet, between pure oxygen air supply source and voltage stabilizing blend tank oxygen content modulating valve 5 is installed.The pure oxygen air supply source is a macromolecule oxygen segregating unit, perhaps pure oxygen storage device, perhaps other separable device that goes out pure oxygen.
The working principle of control system of the present invention is:
The waste gas that produces during engine operation enters exhaust surge tank steady pressure, eliminates the exhaust pulsation, makes the supply of engine EGR waste gas more steady.The unnecessary waste gas of a waste gas part that enters the exhaust surge tank enters atmosphere by back pressure valve, and useful part is by the EGR valve.The effect of EGR valve is to cooperate jointly with the exhaust back pressure valve, realizes keeping in the required air inlet total amount of explosive motor work the flow control of 79%~70% waste gas by them.This part waste gas then enters cooler for recycled exhaust gas, and its temperature will descend in by cooler for recycled exhaust gas, and this helps improving the input stroke of explosive motor, and the flame temperature in the time of making burning reduces, velocity of combustion delays, and the rate of pressure rise reduces, and these all help the control of burning.EGR waste gas enters the voltage stabilizing blend tank after cooling mixes with pure oxygen, and further subdues the pulsation of air inlet and exhaust, improves suction pressure stability, and the mixed gas that pure oxygen that finally mixes and EGR waste gas are formed enters the intake manifold, final participation burning.
The oxygen segregating unit is separated into oxygen and nitrogen with normal air, wherein oxygen by the oxygen content modulating valve enter the voltage stabilizing mixing tank with jar in mix with EGR waste gas, and enter engine combustion and do work the air inlet of realization pure oxygen; Nitrogen then enters atmosphere.Can realize that by adjusting the mixed gas oxygen content in the voltage stabilizing mixing tank is 21~30%, thereby realize the oxygen-enriched combusting of motor oxygen content modulating valve, back pressure valve, EGR valve opening.
Because the mixed gas that pure oxygen and EGR waste gas are formed, wherein oxygen accounts for 21%~30% (supply with according to the concrete operating mode of motor and oil mass and change), and that is left 79%~70% all is made up of engine exhaust, and waste gas mainly is CO
2Form with water vapor, this part waste gas has replaced the N of the air inlet of conventional engines
2Share is owing to no longer contain nitrogen in the air inlet, so the NO in the exhaust gas composition of explosive motor with this understanding
XTo greatly reduce or almost disappear (because nitrogen may be contained in fuel the inside, so can not say and eliminate NO fully
X).
By the control of oxygen content modulating valve, guarantee that all the time the oxygen content in the mixed gas is higher than the content of the oxygen 21% of normal atmospheric, thereby motor is realized oxygen-enriched combusting, promote full combustion of fuel, thereby reduce the discharging of CO, HC, PM pollutant.On the other hand, promote the abundant burning of fuel, also improve Economy simultaneously, thus fuel saving.Realized not only that by pure oxygen air feed oxygen-enriched combusting the cleaning discharging of explosive motor can also improve the power character of Economy and don't sacrifice motor.In addition, oxygen enrichment in the cylinder can guarantee that not only oil plant can burn fully more and complete in the firing chamber, and the oxygen enrichment in the outlet pipe, the temperature that then can make full use of in after-burning and the outlet pipe burns away most of intermediate product that reacted completely in cylinder, thereby significantly reduces CO, the discharging of HC particulate.So not only can promote engine power density, the purpose that can also realize improving fuel utilization ratio and reduce all contaminations discharging.
Exhaust gas temperature at EGR is too high, influence the problem of the charging efficiency of motor, the present invention has adopted cooler for recycled exhaust gas, realized the cold circulation of EGR, reduced intake temperature, the burning preparatory stage and the strong deflagration time of motor are suitably delayed, will make the oil gas mixing in the cylinder more even like this, burning is had some improvement.This shows that control system of the present invention can reduce NO simultaneously from the source
X, CO, CH, PM discharging, the power output that improves motor reduces fuel consumption rate.
Claims (5)
1. pure oxygen air-intake oxygen-enriched combustion control method of explosive motor, adopt of the partial-air admission of part EGR gas as the whole air inlets of explosive motor, it is characterized in that: adopt the remainder air inlet of pure oxygen as the whole air inlets of explosive motor, wherein pure oxygen accounts for 21%~30% of whole air inflows, and EGR gas accounts for 79%~70% of whole air inflows.
2. the pure oxygen air-intake oxygen-enriched combustion control method of explosive motor according to claim 1 is characterized in that: adopt pure oxygen as the concrete steps of the remainder air inlet of the whole air inlets of explosive motor to be: adopt the pure oxygen air supply source that pure oxygen is provided; Regulate the pure oxygen flow by modulating valve; With pure oxygen feed the voltage stabilizing blend tank with through voltage stabilizing, regulate the intake manifold who feeds explosive motor after flow, cooled EGR gas carry out fully mixed, voltage stabilizing.
3. the pure oxygen air-intake oxygen-enriched combustion control method of explosive motor according to claim 2 is characterized in that: described pure oxygen air supply source is macromolecule oxygen segregating unit or pure oxygen storage device.
4. pure oxygen air-intake oxygen-enriched combustion control system of explosive motor, comprise explosive motor and gas recirculation system, gas recirculation system is mainly by the exhaust surge tank that links to each other with internal combustion engine exhaust gas house steward outlet end, the back pressure valve and the EGR valve that are connected with the outlet of exhaust surge tank, the cooler for recycled exhaust gas that is connected with the EGR valve outlet port constitutes, the cooler for recycled exhaust gas outlet is connected with the explosive motor intake manifold, it is characterized in that: the intake manifold of explosive motor connects the outlet of a voltage stabilizing blend tank, one entrance point of this voltage stabilizing blend tank is connected with the pure oxygen air supply source, another entrance point of this voltage stabilizing blend tank is connected with the cooler for recycled exhaust gas outlet, between pure oxygen air supply source and voltage stabilizing blend tank the oxygen content modulating valve is installed.
5. the pure oxygen air-intake oxygen-enriched combustion control system of explosive motor according to claim 4 is characterized in that: described pure oxygen air supply source is macromolecule oxygen segregating unit or pure oxygen storage device.
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CN102434343A (en) * | 2011-09-30 | 2012-05-02 | 辽宁科技大学 | Oxygen-enriched combustion method of lignite methyl alcohol coal slurry fuel material in compression-type internal combustion engine |
GB2500598A (en) * | 2012-03-26 | 2013-10-02 | Ford Global Tech Llc | Engine system comprising EGR and oxygen delivery system |
CN103573480A (en) * | 2013-11-22 | 2014-02-12 | 西华大学 | Pure oxygen engine and combustion control method for pure oxygen engine |
CN105275677A (en) * | 2015-11-13 | 2016-01-27 | 广西玉柴机器股份有限公司 | Gas inlet system of marine diesel engine |
CN105422325A (en) * | 2015-12-03 | 2016-03-23 | 华南理工大学 | Large diesel engine tail gas circulation treatment system and method |
CN105649822A (en) * | 2015-12-31 | 2016-06-08 | 泰豪科技股份有限公司 | Diesel engine comprising oxygen regulating and controlling device and manufacturing technique of diesel engine |
CN109404120A (en) * | 2018-12-30 | 2019-03-01 | 北京工业大学 | The compression-ignited zero nitrogen discharged pure oxygen rotary engine of one kind and its control method |
CN109681318A (en) * | 2018-12-30 | 2019-04-26 | 北京工业大学 | Using oxygen as the zero nitrogen rotor machine of HC fuel spark ignition type and its control method of oxidant |
CN109681317A (en) * | 2018-12-30 | 2019-04-26 | 北京工业大学 | A kind of water spray reduces by the zero nitrogen HC fuel spark ignition type zero-turn handset and its control method of cylinder temperature |
CN109736935A (en) * | 2018-12-30 | 2019-05-10 | 北京工业大学 | Using purity oxygen as the control method of the nitrogen discharged engine of HC fuel spark ignition type zero of oxidant |
CN110500204A (en) * | 2019-09-11 | 2019-11-26 | 潍柴西港新能源动力有限公司 | The self-priming engine of natural gas power unit and its low emission control strategy |
CN110630391A (en) * | 2019-09-02 | 2019-12-31 | 山西省交通科技研发有限公司 | Comprehensive treatment device and treatment method for tail gas of diesel vehicle |
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CN102434343A (en) * | 2011-09-30 | 2012-05-02 | 辽宁科技大学 | Oxygen-enriched combustion method of lignite methyl alcohol coal slurry fuel material in compression-type internal combustion engine |
CN102434343B (en) * | 2011-09-30 | 2013-06-12 | 辽宁科技大学 | Oxygen-enriched combustion method of lignite methyl alcohol coal slurry fuel material in compression-type internal combustion engine |
CN103362668B (en) * | 2012-03-26 | 2017-07-28 | 福特环球技术公司 | Method and apparatus for spraying oxygen in engine |
GB2500598A (en) * | 2012-03-26 | 2013-10-02 | Ford Global Tech Llc | Engine system comprising EGR and oxygen delivery system |
US9181903B2 (en) | 2012-03-26 | 2015-11-10 | Ford Global Technologies, Llc | Method and apparatus for injecting oxygen within an engine |
CN103362668A (en) * | 2012-03-26 | 2013-10-23 | 福特环球技术公司 | Method and apparatus for injecting oxygen within an engine |
GB2500598B (en) * | 2012-03-26 | 2017-12-20 | Ford Global Tech Llc | Method and apparatus for injecting oxygen within an engine |
CN103573480A (en) * | 2013-11-22 | 2014-02-12 | 西华大学 | Pure oxygen engine and combustion control method for pure oxygen engine |
CN103573480B (en) * | 2013-11-22 | 2016-06-08 | 西华大学 | A kind of pure oxygen electromotor and method for controlling combustion thereof |
CN105275677A (en) * | 2015-11-13 | 2016-01-27 | 广西玉柴机器股份有限公司 | Gas inlet system of marine diesel engine |
CN105422325A (en) * | 2015-12-03 | 2016-03-23 | 华南理工大学 | Large diesel engine tail gas circulation treatment system and method |
CN105649822A (en) * | 2015-12-31 | 2016-06-08 | 泰豪科技股份有限公司 | Diesel engine comprising oxygen regulating and controlling device and manufacturing technique of diesel engine |
CN109404120A (en) * | 2018-12-30 | 2019-03-01 | 北京工业大学 | The compression-ignited zero nitrogen discharged pure oxygen rotary engine of one kind and its control method |
CN109681318A (en) * | 2018-12-30 | 2019-04-26 | 北京工业大学 | Using oxygen as the zero nitrogen rotor machine of HC fuel spark ignition type and its control method of oxidant |
CN109681317A (en) * | 2018-12-30 | 2019-04-26 | 北京工业大学 | A kind of water spray reduces by the zero nitrogen HC fuel spark ignition type zero-turn handset and its control method of cylinder temperature |
CN109736935A (en) * | 2018-12-30 | 2019-05-10 | 北京工业大学 | Using purity oxygen as the control method of the nitrogen discharged engine of HC fuel spark ignition type zero of oxidant |
CN109404120B (en) * | 2018-12-30 | 2021-03-02 | 北京工业大学 | Compression ignition type zero-nitrogen-emission pure oxygen rotor engine and control method thereof |
CN109681318B (en) * | 2018-12-30 | 2021-07-23 | 北京工业大学 | Hydrocarbon fuel ignition type zero-nitrogen rotor machine with oxygen as oxidant and control method thereof |
CN110630391A (en) * | 2019-09-02 | 2019-12-31 | 山西省交通科技研发有限公司 | Comprehensive treatment device and treatment method for tail gas of diesel vehicle |
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CN110500204B (en) * | 2019-09-11 | 2023-08-15 | 潍柴西港新能源动力有限公司 | Self-priming engine for natural gas generator set and low-emission control strategy thereof |
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