CN1271326C - Compression combustion oxygen engine with zero nitrogen oxide compounds exhaust - Google Patents
Compression combustion oxygen engine with zero nitrogen oxide compounds exhaust Download PDFInfo
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- CN1271326C CN1271326C CNB031290515A CN03129051A CN1271326C CN 1271326 C CN1271326 C CN 1271326C CN B031290515 A CNB031290515 A CN B031290515A CN 03129051 A CN03129051 A CN 03129051A CN 1271326 C CN1271326 C CN 1271326C
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- modulating valve
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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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- Output Control And Ontrol Of Special Type Engine (AREA)
- Exhaust Gas After Treatment (AREA)
- Exhaust-Gas Circulating Devices (AREA)
Abstract
The present invention relates to a compressed oxygen ignition engine without exhausting nitrogen oxide compounds, which mainly comprises an engine, a waste gas by-pass valve, a waste gas cooler, a waste gas pressure regulating valve, an oxygen source, an oxygen pressure regulating valve, a gas mixer, an oxygen pressure sensor, an electronic control system of the engine, etc. Nitrogen gas does not exist in the gas entering the engine so that the nitrogen oxide compounds radically can not be generated and exhausted in the environment. Simultaneously, the portion of carbon dioxide and water vapor in the waste gas enters the engine for recycling to reduce the charged oxygen concentration and increase the specific heat capacity of the combustible gas mixture. Consequently, the combustion speed of the combustible gas mixture in the engine can be controlled so that the high efficiency and the clean combustion of the compressed ignition engine can be realized. The present invention can ensure that the change of the combustion heat release rate of the compressed ignition engine can not be too fast so that the requirement for the mechanical and heat strength of the whole compressed ignition engine can not be too high. Thus, the various performances of the compressed ignition engine are enhanced for integration.
Description
Technical field
What this invention related to is a kind of compression-ignition engine, does not contain the oxygen ignition engine of the zero nitrogen oxide compound discharging of nitrogen in particularly a kind of air inlet, belongs to motor car engine and field of environment protection.
Background technique
Along with the increase of automobile pollution, the motor car engine noxious emission is on the rise to the influence that environment for human survival brings, and reduces the worldwide key subjects that automobile exhaust pollution has become the energy and environment technical field.
As widely used automobile power, the burning of compression-ignition engine and draining technology have obtained effective popularization and application.Since eighties of last century the seventies, technology such as charge inter cooling, new combustion systems, lubricant oil and clarifying fuel oil, electric-controlled injection, high-pressure common rail, exhaust gas recirculation (EGR), catalysis reprocessing have obtained fast development, making that the performance of compression-ignition engine and exhaust emissions have obtained improving significantly, is the achievement that the diesel engine of new generation of feature has been obtained high reliability, low fuel consumption rate with the electric-control common-rail type oil-fired system particularly.
Motor vehicle exhaust emission remains the main source of pollution of atmosphere in the big and medium-sized cities, and its ratio has progressively trend of rising but up to the present.As everyone knows, in conventional compression-ignition engine, topmost noxious emission is nitrogen oxide (NO
x) and soot particle, its formation condition has nothing in common with each other, and purification method is conflicted mutually.It is the effective technology that reduces the soot particle discharging that Electrocontrolled high-pressure sprays, but is subjected to material and cost limit value, and peak injection pressure improves limited; After injection can effectively reduce NO
xDischarging, but soot particle discharging and combustion efficiency are had negative effect.At the characteristics of compression-ignition engine oxygen-enriched combusting, reducing NO in recent years
xThe discharging aspect is mainly at rare NO
xTechnology, catalytic reduction technology, NO
xAspect such as adsorption technology and plasma technique is explored.The reprocessing research of soot particle mainly concentrates on particulate trap technology (DPF), the catalytic oxidizer technology is then adopted in hydrocarbon (HC), carbon monoxide (CO) discharging reprocessing, the former faces the challenge of dpf regeneration technology, and the latter then has relatively high expectations to sulfur content in fuel and row's temperature.In the practical application, the compression-ignition engine reprocessing is owing to each side such as technology, costs, and it is extensive practical also to fail at present.
At present, an important directions that reduces the compression-ignition engine exhaust pollution is to carry out fuel design and combustion system optimization again, but New-type fuel (as oxygenated fuels such as DME) source, the equidistant extensive practicability of novel combustion manner (as homogeneous charging compressing ignition, being called for short HCCI) also have long segment distance.
In existing change gas handling system performance technologies, charge inter cooling is the technology that is most widely used, changing air valve phase technology (VVT) also is the effective way of optimizing the compression-ignition engine gas handling system, improving engine combustion and emission performance, but after adopting these two technology, the NO of compression-ignition engine
xDischarging is not still finally solved.Therefore, how effectively to improve engine combustion efficiency, reduce its exhaust emissions, remain the difficult problem of engine research person's concern in the world.
In the prior art document, the D.N.Assanis of U.S. University of Michigan university is (Journal of Engineering for Gas Turbines and Power in Study of using oxygen-enriched combustion air for locomotive dieselengines one literary composition, v123n1, January, 2001) proposed to improve oxygen concentration to improve the method for compression-ignition engine performance.In this article, utilize the air-filtering membrane technology that the oxygen concentration of inlet air is brought up to 35% by about 21% of atmospheric conditions, the power character of compression-ignition engine improves 90%, the oil consumption reduced rate reaches 15%, but, owing to improve oxygen concentration, the nitrogen of higher concentration still arranged, the NO in the engine exhaust emission in the air inlet
xEmission index increases at double than common compression-ignition engine, can not reach simultaneously that compression-ignition engine is efficient, the purpose of clean burning, more can not realize zero NO
xDischarging.
Summary of the invention:
Be deficiency and the defective that overcomes prior art, the present invention is basic ideas with the pure oxygen engine fuel that does not contain nitrogen in the inlet air, realizes that compression-ignition engine is efficient, clean burning.This engine system is similar with common exhaust recirculation compression-ignition engine, and difference is not contain nitrogen in the air inlet, has fundamentally eliminated generation NO
xEnvironment; Because the oxygen concentration height, CO, HC discharge amount will reduce significantly, and the combustion efficiency of motor also can be improved largely, thereby reach the purpose of energy saving and protection environment.
Because when using pure oxygen as air inlet, the velocity of combustion of inflammable mixture is too fast in the motor, rate of heat release is excessive, to mechanical strength, the hot strength requirement increase of common engine; In order to save oxygen expenditure, the uniformity requirement of fuel and oxygen mix also increases in the engine aspirating system.Therefore, the present invention proposes and suck gas of combustion (main component is carbon dioxide and water vapour) in the firing chamber again, to reduce requirement to gas handling system, and reach the oxygen concentration that reduces in the inflammable mixture simultaneously, the velocity of combustion and the combustion heat release rate of control motor, thus reduction is to the requirement of engine mechanical intensity and hot strength.
The present invention mainly comprises engine body, engine exhaust house steward, exhaust gas by-pass valve, gaseous effluent, exhaust gas pressure modulating valve, source of oxygen, oxygen pressure modulating valve, gas mixer, engine intake manifold, electronic engine management system, engine rotation speed sensor and engine oil door position sensor etc.
Engine control system will be regulated oxygen pressure and the exhaust gas pressure that enters motor according to rotating speed, the load (throttle position) of motor, thereby regulate the amount of oxygen, exhausted air quantity and the ratio between them that enter motor, guarantee that motor works under the oxygen-fuel ratio of the best, realize that compression-ignition engine is efficient, cleaning, the discharging of no oxynitrides burn.
The present invention is owing to the ratio of oxygen-fuel can optimization be supplied with, the CO of motor, HC discharging and combustion efficiency can realize optimization, and therefore, this system can not only reduce the noxious emission of compression-ignition engine to ambient air significantly, improve the thermal efficiency of compression-ignition engine, realize zero NO
xDischarge, and exhaust gas constituents part recirculation such as carbon dioxide, water vapour are entered the firing chamber, controlled the combustion heat release rate of motor.
Owing to do not contain nitrogen in the air inlet, there is not the nitrogen element to participate in reaction in the combustion process, thereby eliminated the oxynitrides discharging the compression-ignition engine from the source, EGR gas (main component is carbon dioxide and water vapour) has been controlled the speed of combustion reaction, that the combustion heat release rate that has guaranteed motor is unlikely to is too fast, the requirement of motor complete machine mechanical strength and hot strength is unlikely to too high, thereby has improved the combination property of compression-ignition engine on the whole.
Description of drawings
Fig. 1 is the oxygen ignition engine system schematic of zero nitrogen oxide compound discharging.Among the figure,
The 1st, compression-ignition engine, the 2nd, exhaust manifold, the 3rd, exhaust gas by-pass valve, the 4th, gaseous effluent, the 5th, exhaust gas pressure modulating valve, the 6th, source of oxygen, the 7th, the oxygen pressure modulating valve, the 8th, gas mixer, 9 oxygen pressure sensors, the 10th, PFE Exhaust Pressure Transducer, the 11st, electronic engine management system, the 12nd, engine intake manifold, the 13rd, engine rotation speed sensor, the 14th, engine oil door position sensor.
Embodiment
Below in conjunction with accompanying drawing concrete enforcement of the present invention is further described.As shown in Figure 1, the present invention mainly comprises motor 1, exhaust manifold 2, exhaust gas by-pass valve 3, gaseous effluent 4, exhaust gas pressure modulating valve 5, source of oxygen 6, oxygen pressure modulating valve 7, gas mixer 8, oxygen pressure sensor 9, PFE Exhaust Pressure Transducer 10, electronic engine management system 11, engine intake manifold 12, engine rotation speed sensor 13, engine oil door position sensor 14.
Engine intake manifold 12, exhaust manifold 2 links to each other with the porting of motor 1 respectively, the outlet of exhaust manifold 2 connects the import of exhaust gas by-pass valve 3, the logical ambient air of an outlet of exhaust gas by-pass valve 3, another outlet connects the import of gaseous effluent 4, the outlet of gaseous effluent 4 connects the import of exhaust gas pressure modulating valve 5, the outlet in the import ventilatory assistance source 6 of oxygen pressure modulating valve 7, after connecting together, the outlet of oxygen pressure modulating valve 7 and exhaust gas pressure modulating valve 5 connects the import of gas mixer 8, the outlet sending and receiving motivation intake manifold's 12 of gas mixer 8 import, oxygen pressure sensor 9, PFE Exhaust Pressure Transducer 10 is installed in the outlet port of oxygen pressure modulating valve 7 and exhaust gas pressure modulating valve 5 respectively, engine rotation speed sensor 13 and throttle position switch 14 are installed in respectively on the flywheel and throttle of motor 1, and each sensor is electrically connected with electronic engine management system 11.
In the oxygen ignition engine of zero nitrogen oxide compound discharging, gaseous effluent 4 is used for cooling off the waste gas (carbon dioxide, water vapour) that recirculation enters engine air inlet tube, gaseous effluent 4 is wanted cooled exhaust air on the one hand, also will guarantee the noncondensing one-tenth liquid water of water vapour on the other hand; Source of oxygen 6 is used to provide the motor pure oxygen; Exhaust gas pressure modulating valve 5, oxygen pressure modulating valve 7 are used for regulating the waste gas that enters motor and the size of amount of oxygen; The waste gas that mixer 8 is used for participating in recirculation fully mixes with new fresh oxygen, to guarantee the uniformity of air inlet, reduces OCR; Engine rotation speed sensor 13, throttle position switch 14, oxygen pressure sensor 9, PFE Exhaust Pressure Transducer 10 etc. are with in the signal input electronic engine management system 11 that collects, export engine control signal through after the computing, control the aperture size of engine throttle opening, oxygen pressure modulating valve 7 and exhaust gas pressure modulating valve 5 respectively, thereby guarantee best oxygen-fuel ratio, reach the best combustion and the discharging of compression-ignition engine, realize the target of optimum operation.
Claims (1)
1. the oxygen ignition engine of zero nitrogen oxide compound discharging, mainly comprise engine body (1), exhaust manifold (2), electronic engine management system (11), engine intake manifold (12), engine rotation speed sensor (13), engine oil door position sensor (14), it is characterized in that not comprising in the engine charge nitrogen, and utilize water vapour in the EGR gas, the characteristics that the carbon dioxide specific heat capacity is big, the velocity of combustion of control oxygen ignition engine, also comprise exhaust gas by-pass valve (3) in the structure, gaseous effluent (4), PFE Exhaust Pressure Transducer (10), exhaust gas pressure modulating valve (5), source of oxygen (6), oxygen pressure modulating valve (7), gas mixer (8), oxygen pressure sensor (9), engine intake manifold (12), exhaust manifold (2) links to each other with the porting of motor (1) respectively, the outlet of exhaust manifold (2) connects the import of exhaust gas by-pass valve (3), the logical ambient air of an outlet of exhaust gas by-pass valve (3), another outlet connects the import of gaseous effluent (4), the outlet of gaseous effluent (4) connects the import of exhaust gas pressure modulating valve (5), the outlet in the import ventilatory assistance source (6) of oxygen pressure modulating valve (7), after connecting together, the outlet of oxygen pressure modulating valve (7) and exhaust gas pressure modulating valve (5) connects the import of gas mixer (8), the outlet sending and receiving motivation intake manifold's (12) of gas mixer (8) import, oxygen pressure sensor (9), PFE Exhaust Pressure Transducer (10) is installed in the outlet port of oxygen pressure modulating valve (7) and exhaust gas pressure modulating valve (5) respectively, engine rotation speed sensor (13) and throttle position switch (14) are installed in respectively on the flywheel and throttle of motor (1), each sensor is electrically connected with electronic engine management system (11), by the accelerator open degree of electronic engine management system (11) Comprehensive Control motor, the aperture of the aperture of oxygen pressure modulating valve (7) and exhaust gas pressure modulating valve (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031290515A CN1271326C (en) | 2003-06-05 | 2003-06-05 | Compression combustion oxygen engine with zero nitrogen oxide compounds exhaust |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031290515A CN1271326C (en) | 2003-06-05 | 2003-06-05 | Compression combustion oxygen engine with zero nitrogen oxide compounds exhaust |
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| Publication Number | Publication Date |
|---|---|
| CN1472434A CN1472434A (en) | 2004-02-04 |
| CN1271326C true CN1271326C (en) | 2006-08-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB031290515A Expired - Fee Related CN1271326C (en) | 2003-06-05 | 2003-06-05 | Compression combustion oxygen engine with zero nitrogen oxide compounds exhaust |
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| CN (1) | CN1271326C (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1312392C (en) * | 2004-02-12 | 2007-04-25 | 上海交通大学 | Low emission combustion system of flexible fuel engine |
| CN102213161B (en) * | 2010-06-01 | 2012-12-19 | 靳北彪 | Closed gas cycle type thermal power system |
| WO2012051784A1 (en) * | 2010-10-18 | 2012-04-26 | Jin Beibiao | Low-entropy mixed-combustion turbo compound explosive 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 |
| CN105569851B (en) * | 2015-12-23 | 2018-08-07 | 北汽福田汽车股份有限公司 | Method and apparatus for marked gas engine fuel |
| 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 |
| 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 |
| CN109736936B (en) * | 2018-12-30 | 2020-11-06 | 北京工业大学 | Zero-nitrogen hydrocarbon fuel ignition type rotor machine with controllable pressure rise rate and control method thereof |
| CN110617151A (en) * | 2019-09-02 | 2019-12-27 | 山西省交通科技研发有限公司 | Comprehensive treatment device and method for exhaust pollutants of diesel vehicle |
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- 2003-06-05 CN CNB031290515A patent/CN1271326C/en not_active Expired - Fee Related
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Granted publication date: 20060823 |