CN103343719A - Novel air inlet mixing system for supercharged and inter-cooling gas engine - Google Patents
Novel air inlet mixing system for supercharged and inter-cooling gas engine Download PDFInfo
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- CN103343719A CN103343719A CN201310130697XA CN201310130697A CN103343719A CN 103343719 A CN103343719 A CN 103343719A CN 201310130697X A CN201310130697X A CN 201310130697XA CN 201310130697 A CN201310130697 A CN 201310130697A CN 103343719 A CN103343719 A CN 103343719A
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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
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- Y02T10/30—Use of alternative fuels, e.g. biofuels
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Abstract
The invention discloses an air inlet mixing system for a supercharged and inter-cooling gas engine. A sequence structure of first supercharging and then mixing is adopted, when the engine tempers, an intercooler and a supercharger can not be burnt and exploded, and the air inlet mixing system is simple, reliable, safe and durable.
Description
Technical field
The invention belongs to the gas engine field.
Background technique
The charge inter cooling technology is to improve the effective way of internal-combustion engine power per liter, obtained extensive use in the diesel engine field, yet power per liter is seldom seen the product of charge inter cooling than the lower gas engine that more needs to improve power per liter of diesel engine, reason is existing machinery control air inlet hybrid system (the proportion expression mixer that is used for gas engine, venturi mixer, pressure reducing regulator) can't be under the situation that the air incoming pressure changes proper functioning, have to adopt the order of supercharging after mixing earlier when therefore being used for the charge inter cooling gas engine, this spline structure is full of a large amount of flammable mixers in the intercooler pressurized machine when engine operation, when motor generation tempering is burnt, a large amount of inflammable mixture will combustion explosion in the intercooler pressurized machine, cause the intercooler pressurized machine to damage, cause personal security accident, this factor to hinder the charge inter cooling technology in the application in gas engine field when serious always; The electronic control air inlet hybrid system (combustion gas electronic control air inlet hybrid system) of existing charge inter cooling gas engine, can realize the order of mixing after the first supercharging, what this spline structure was full of in the intercooler pressurized machine when engine operation is air, when burning is strile-backd in the motor generation, air in the intercooler pressurized machine can combustion explosion, solved the safety problem of charge inter cooling gas engine intercooler pressurized machine, but, since this electronic control air inlet hybrid system complex structure, working service cost height, the present Economy condition that does not also possess extensive use.
Summary of the invention
The objective of the invention is: under the rational prerequisite of Economy, solve machinery control air inlet hybrid system and adapt to the technical problem that the air incoming pressure changes, the technology barrier of getting rid of order by merging after the first supercharging for machinery control air inlet hybrid system charge inter cooling gas engine, the safety problem of solution machinery control charge inter cooling gas engine intercooler pressurized machine is for the charge inter cooling technology is used the technical feasible rational primary condition economically of creation in the gas engine field.
The present invention is by: turbosupercharger, intercooler, degree of vacuum mixer, balace weight, decompressor is formed synchronously; The combustion gas inlet opening of turbosupercharger is connected with the air Cleaner, and air-out is connected with the inlet opening of intercooler; The degree of vacuum mixer is by mixing body, by-pass cock, constant force spring is formed, mixing body is cylinder shape structure, mix on the body air-in is arranged, the combustion gas inlet opening, the inflammable mixture delivery outlet, air-in is connected with the air-out of balace weight, the combustion gas inlet opening is connected with the combustion gas delivery outlet of synchronous decompressor, the inflammable mixture delivery outlet is connected with engine inlets, by-pass cock is the piston-like structure, be installed in and mix in the body, air-in is arranged on the by-pass cock, the combustion gas inlet opening, the inflammable mixture delivery outlet respectively with mix body on air-in, the combustion gas inlet opening, the inflammable mixture delivery outlet is corresponding, form the air input constant valve of pressure drop and the constant valve of combustion gas input pressure drop of degree of vacuum mixer, the by-pass cock end face is communicated with air-in on mixing body, is connected with constant force spring bottom the by-pass cock; Balace weight is by the balance body, diaphragm, control switch is formed, the balance body is disc-shaped structure, inner chamber is arranged, inner chamber is installed diaphragm, diaphragm is separated into air pressure chamber and gaseous-pressure chamber to inner chamber, there is the combustion gas inlet opening to be communicated with the gaseous-pressure chamber on the balance body of gaseous-pressure chamber one end, be communicated with the combustion gas output pipeline of synchronous decompressor, on the balance body of air pressure chamber one end air-in and air-out are arranged, air-out is communicated with air pressure chamber, be connected with the air-in of degree of vacuum mixer, air-in is connected with the delivery outlet of intercooler, air pressure is indoor control switch, control switch is the piston-like structure, control switch is connected with diaphragm, has air-in corresponding with the air-in on the balance body on the control switch, forms the air delivery pressure regulating valve of balace weight; Decompressor is by the decompression body synchronously, diaphragm, lever, the control valve sheet is formed, the decompression body is disc-shaped structure, inner chamber is arranged, inner chamber is installed diaphragm, diaphragm is separated into air pressure chamber and gaseous-pressure chamber to inner chamber, there is the air pressure signal input to be communicated with air pressure chamber on the decompression body of air pressure chamber one end, be communicated with the air output pipeline of pressurized machine, combustion gas inlet opening and combustion gas delivery outlet are arranged on the decompression body of gaseous-pressure chamber one end, the combustion gas inlet opening is connected with the input pipeline in high-pressure gas source, gaseous-pressure is indoor lever, one end of lever is connected with diaphragm, the other end is connected with the control valve sheet, and the control valve sheet is corresponding with the combustion gas inlet opening on the decompression body.
With the contrast of existing mechanical control air inlet hybrid system, the present invention is in the sequential organization that has realized under the condition of identical cost mixing after the first supercharging, there is not the possibility that causes the blast of intercooler pressurized machine to damage because of engine flashback, reaches the safe effect of electronic control hybrid system; With the contrast of existing electronic control hybrid system, the present invention has reduced system cost significantly under the situation that realizes intercooler pressurized machine safe effect, possess technical feasible, reasonably apply condition economically.
Description of drawings
Accompanying drawing 1 is the cross-sectional view of degree of vacuum mixer;
Accompanying drawing 2 is cross-sectional view of balace weight;
Accompanying drawing 3 is cross-sectional view of synchronous decompressor;
Embodiment
See accompanying drawing, the present invention is by: turbosupercharger, intercooler, degree of vacuum mixer (accompanying drawing 1), balace weight (accompanying drawing 2), decompressor (accompanying drawing 3) is formed synchronously; The air-in of turbosupercharger is connected with the air Cleaner, air-out is connected with the inlet opening of intercooler; The degree of vacuum mixer is by mixing body 4, by-pass cock 5, constant force spring 3 is formed, mixing body 4 is cylinder shape structure, mix on the body square air-in 1 is arranged, square combustion gas inlet opening 9, inflammable mixture input outlet 7, air-in 1 is connected with the air-out 13 of balace weight (accompanying drawing 2), combustion gas inlet opening 9 is connected with the combustion gas delivery outlet 27 of synchronous decompressor (accompanying drawing 3), inflammable mixture delivery outlet 7 is connected with the intake duct of motor, by-pass cock 5 is the piston-like structure, be installed in air-in 1, combustion gas inlet opening 9, in the mixing body between the inflammable mixture delivery outlet 7, square air-in 2 is arranged on the by-pass cock, square combustion gas inlet opening 8, with flammable mixer delivery outlet 6 respectively with mix body on square air-in 1, square combustion gas inlet opening 9, flammable mixer delivery outlet 7 is corresponding, form the air input constant valve of pressure drop and the constant valve of combustion gas input pressure drop of degree of vacuum mixer, the by-pass cock top is communicated with air-in 1 on mixing body, is connected with constant force spring 3 bottom the by-pass cock; Balace weight (accompanying drawing 2) is by balance body 12, diaphragm 17, control switch 18 is formed, balance body 12 is disc-shaped structure, inner chamber is arranged, inner chamber is installed diaphragm 17, diaphragm 17 is separated into air pressure chamber 16 to inner chamber, gaseous-pressure chamber 15, there is gaseous-pressure signal input 14 to be communicated with gaseous-pressure chamber 15 on the mixing body of gaseous-pressure chamber 15 1 ends, be communicated with the combustion gas delivery outlet 27 of synchronous decompressor (accompanying drawing 3), air-in 10 and air-out 13 are arranged on the balance body of air pressure chamber 16 1 ends, air-in 10 is connected with the delivery outlet of intercooler, air-out 13 is communicated with air pressure chamber 16, be connected with the air-in 1 of vacuum mixer (accompanying drawing 1), control switch 18 is arranged in the air pressure chamber 16, control switch 18 is the piston-like structure, control switch 18 is connected with diaphragm 17, and the air-in 10 corresponding formation air delivery pressure regulating valves on air-in 11 and the balance body are arranged on the control switch 18; Synchronously decompressor (accompanying drawing 3) is by decompression body 26, diaphragm 22, lever 21, control valve sheet 20 is formed, decompression body 26 is disc-shaped structure, inner chamber is arranged, inner chamber is installed diaphragm 22, diaphragm 22 is separated into air pressure chamber 24 and gaseous-pressure chamber 25 to inner chamber, there is air pressure signal input 23 to be communicated with air pressure chamber 24 on the decompression body of air pressure chamber 24 1 ends, be communicated with the air output pipeline of pressurized machine, combustion gas inlet opening 19 and combustion gas delivery outlet 27 are arranged on the decompression body of gaseous-pressure chamber 25 1 ends, combustion gas inlet opening 19 is connected with the output pipeline in high-pressure gas source, combustion gas delivery outlet 27 is connected with the combustion gas inlet opening 9 of degree of vacuum mixer (accompanying drawing 1), lever 21 is arranged in the gaseous-pressure chamber 25, one end of lever 21 is connected with diaphragm 22, the other end is connected with control valve sheet 20, and the combustion gas inlet opening on control valve sheet 20 and the decompression body is over against answering.
Degree of vacuum mixer (accompanying drawing 1) is just the same with the effect of proportion expression mixer, difference is that the degree of vacuum mixer possesses air inlet pressure drop constant function, guarantee the input pressure drop basically identical of mixer in the comprehensive operating mode scope of motor, the elastic force that changes constant force spring 3 can change the air inlet constant pressure drop of degree of vacuum mixer, the air inlet constant-pressure drop is crossed the maximum output that conference influences motor, the too small mixer that can reduce of air inlet constant pressure drop is to the inconsistent adaptive capacity of air fuel gas incoming pressure, reasonably the air inlet constant-pressure drop can not influence the maximum output of motor, largely improves mixer again to the inconsistent adaptive capacity of air fuel gas incoming pressure.
The effect of balace weight (accompanying drawing 2) is when the gaseous-pressure that fuel gas source is supplied with is lower than the air pressure of pressurized machine output, keep flowing to the air pressure consistent with gaseous-pressure (balance) of mixer, the inflammable mixture concentration that mixer is exported can be not thinning because of the supply pressure reduction of fuel gas source.
Decompressor (accompanying drawing 3) possesses the pressure-reducing function of conventional pressure reducer synchronously, difference is when the supply pressure of fuel gas source is higher than the air pressure of pressurized machine output, the gaseous-pressure of its output can with the air pressure consistent (synchronously) of pressurized machine output, make the inflammable mixture concentration of mixer output thinning because of the air delivery pressure rising of pressurized machine.
During engine start, intake vacuum reduces by-pass cock and 5 bottom atmospheric pressures by inflammable mixture delivery outlet 7, produce pressure difference between by-pass cock 5 end faces and the bottom, the active force that produces at by-pass cock 5 when this pressure difference is during greater than the elastic force of constant force spring 3, by-pass cock 5 moves downward Air valves and gas valve is opened synchronously, air fuel gas enters to mix in the mixer and forms inflammable mixture, stop the air inlet air pressure of mixer to fall further reduction simultaneously, make pressure difference at the active force of by-pass cock 5 generations and the Spring balanced of constant force spring, by-pass cock stops at a certain state, when engine operating condition changes (air inflow variation), the corresponding change of by-pass cock 5 stop positions, keep the air pressure of Air valves and gas valve to fall constant, reach the constant purpose of air inlet pressure drop, change the elastic force of constant force spring 3, can change the air inlet constant pressure drop of mixer, can change mixer to the adaptive capacity of the inconsistent degree of air fuel gas incoming pressure, the air inlet constant-pressure drop of mixer is little, to the inconsistent adaptive capacity of air fuel gas incoming pressure just a little less than, the air inlet constant-pressure drop of mixer is big, just strong to the inconsistent adaptive capacity of air fuel gas incoming pressure, but, the air inlet constant-pressure drop of mixer is excessive, can influence the maximum output of motor, for example, the air inlet constant voltage of mixer is reduced to 1KPa, the incoming pressure of air and combustion gas differs 0.5KPa, flammable mixer concentration just changes 50%, if the constant voltage of mixer is reduced to 5KPa, the incoming pressure error of air and combustion gas is 0.5KPa equally, and inflammable mixture concentration only changes 10%; Idling operation and low speed light load operating mode, pressurized machine does not have enough energy proper functioning, the air pressure of pressurized machine output remains atmospheric pressure, the atmospheric pressure of decompressor (accompanying drawing 3) air pressure chamber 24 also equals atmospheric pressure synchronously, at this moment, the atmospheric pressure of gaseous-pressure chamber 25 can only littlely be higher than atmospheric pressure, the atmospheric pressure of balace weight (accompanying drawing 2) gaseous-pressure chamber 15 is little atmospheric pressure that is higher than also, the balace weight Air valves is in full-gear, the atmospheric pressure of balace weight air pressure chamber 16 equals atmospheric pressure, the result, the air pressure of mixer air-in 1 equals atmospheric pressure, the little atmospheric pressure that is higher than of the gaseous-pressure of combustion gas inlet opening 9, and the air fuel gas incoming pressure of mixer is in a basic balance, in this case, the work characteristics of the work characteristics of native system and prior art is just the same; When high engine speeds is completely born operating mode, pressurized machine
Obtain enough energy proper functioning, the delivery air pressure of pressurized machine raises, the atmospheric pressure of decompressor air pressure chamber 24 is followed rising synchronously, diaphragm 22 produces active force further opens combustion gas input valve by lever 21, the high-pressure gas source makes the atmospheric pressure rising of gaseous-pressure chamber 25 and the gas pressure balance of air pressure chamber 24 by the combustion gas inlet opening 19 of synchronous decompressor, the gaseous-pressure of maintenance decompressor output and the air pressure of pressurized machine output are synchronous, the result raises the air-in 1 of degree of vacuum mixer and the atmospheric pressure of combustion gas inlet opening 9 synchronously, the atmospheric pressure of combustion gas inlet opening 9 still keeps little atmospheric pressure that is higher than air-in 1, mixer air fuel gas incoming pressure error (inconsistent) degree still remains unchanged, and the inflammable mixture concentration of mixer output remains unchanged; When the supply pressure of fuel gas source is lower than the air pressure of pressurized machine output, at this moment, the pressure of the gaseous-pressure chamber 25 of decompressor is lower than the pressure of air pressure chamber 24 synchronously, the pressure reducers gas valve opening reaches maximum also can't the keep atmospheric pressure of gaseous-pressure chamber 25 and the gas pressure balance of air pressure chamber 24 synchronously, simultaneously, balace weight (accompanying drawing 2) atmospheric pressure of gaseous-pressure chamber 15 also is lower than the atmospheric pressure of air pressure chamber 16, diaphragm forms pressure difference between 17 two sides, this pressure difference moves upward diaphragm 17 drive control switchs 18 at diaphragm 17 generation active forces and turns down the air conditioning valve, the atmospheric pressure of air pressure chamber 16 is reduced, the gas pressure balance of final and gaseous-pressure chamber 15, the result, the air fuel gas incoming pressure that the degree of vacuum mixer obtains still is consistent (balance), and the inflammable mixture concentration of mixer output does not change because of the supply pressure reduction of fuel gas source; As seen, no matter be that the air incoming pressure changes (pressurized machine factor), still the combustion gas incoming pressure changes (fuel gas source factor), the air fuel gas pressure that native system flows to mixer all is consistent, the inflammable mixture concentration of mixer output can not change, gas engine can both proper functioning, and the order of mixing after the first supercharging is accomplished.
Claims (1)
1. one kind is used for charge inter cooling gas engine air inlet hybrid system, its feature by: turbosupercharger, intercooler, degree of vacuum mixer, balace weight, decompressor is formed synchronously; The combustion gas inlet opening of turbosupercharger is connected with the air Cleaner, and air-out is connected with the inlet opening of intercooler; The degree of vacuum mixer is by mixing body, by-pass cock, constant force spring is formed, mixing body is cylinder shape structure, mix on the body air-in is arranged, the combustion gas inlet opening, the inflammable mixture delivery outlet, air-in is connected with the air-out of balace weight, the combustion gas inlet opening is connected with the combustion gas delivery outlet of synchronous decompressor, the inflammable mixture delivery outlet is connected with engine inlets, by-pass cock is the piston-like structure, be installed in and mix in the body, air-in is arranged on the by-pass cock, the combustion gas inlet opening, the inflammable mixture delivery outlet respectively with mix body on air-in, the combustion gas inlet opening, the inflammable mixture delivery outlet is corresponding, form the air input constant valve of pressure drop and the constant valve of combustion gas input pressure drop of degree of vacuum mixer, the by-pass cock end face is communicated with air-in on mixing body, is connected with constant force spring bottom the by-pass cock; Balace weight is by the balance body, diaphragm, control switch is formed, the balance body is disc-shaped structure, inner chamber is arranged, inner chamber is installed diaphragm, diaphragm is separated into air pressure chamber and gaseous-pressure chamber to inner chamber, there is the combustion gas inlet opening to be communicated with the gaseous-pressure chamber on the balance body of gaseous-pressure chamber one end, be communicated with the combustion gas output pipeline of synchronous decompressor, on the balance body of air pressure chamber one end air-in and air-out are arranged, air-out is communicated with air pressure chamber, be connected with the air-in of degree of vacuum mixer, air-in is connected with the delivery outlet of intercooler, air pressure is indoor control switch, control switch is the piston-like structure, control switch is connected with diaphragm, has air-in corresponding with the air-in on the balance body on the control switch, forms the air delivery pressure regulating valve of balace weight; Decompressor is by the decompression body synchronously, diaphragm, lever, the control valve sheet is formed, the decompression body is disc-shaped structure, inner chamber is arranged, inner chamber is installed diaphragm, diaphragm is separated into air pressure chamber and gaseous-pressure chamber to inner chamber, there is the air pressure signal input to be communicated with air pressure chamber on the decompression body of air pressure chamber one end, be communicated with the air output pipeline of pressurized machine, combustion gas inlet opening and combustion gas delivery outlet are arranged on the decompression body of gaseous-pressure chamber one end, the combustion gas inlet opening is connected with the input pipeline in high-pressure gas source, gaseous-pressure is indoor lever, one end of lever is connected with diaphragm, the other end is connected with the control valve sheet, and the control valve sheet is corresponding with the combustion gas inlet opening on the decompression body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310130697XA CN103343719A (en) | 2013-04-08 | 2013-04-08 | Novel air inlet mixing system for supercharged and inter-cooling gas engine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310130697XA CN103343719A (en) | 2013-04-08 | 2013-04-08 | Novel air inlet mixing system for supercharged and inter-cooling gas engine |
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| CN103343719A true CN103343719A (en) | 2013-10-09 |
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| CN201310130697XA Pending CN103343719A (en) | 2013-04-08 | 2013-04-08 | Novel air inlet mixing system for supercharged and inter-cooling gas engine |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4864991A (en) * | 1987-12-01 | 1989-09-12 | Snyder Warren E | Method and apparatus for controlling air to gas ratio of gaseous fueled engines |
| CN1837599A (en) * | 2006-04-22 | 2006-09-27 | 蒙国宁 | Air/combustion gas input pressure balancer for mixer of gas engine |
| CN101260845A (en) * | 2007-03-11 | 2008-09-10 | 蒙国宁 | One-valve multiple-door large flow single-stage pressure reducing regulator |
| CN101289972A (en) * | 2008-05-25 | 2008-10-22 | 蒙国宁 | Bidirectional decompression mixer |
| CN101424229A (en) * | 2008-11-23 | 2009-05-06 | 蒙国宁 | Automatic enriching mixer |
| CN101603476A (en) * | 2008-06-12 | 2009-12-16 | 东风南充汽车有限公司 | The air supply system of gas as single fuel motor |
| CN202832864U (en) * | 2012-09-21 | 2013-03-27 | 重庆金之川动力机械有限公司 | Low-pressure gas appliance of gas engine |
-
2013
- 2013-04-08 CN CN201310130697XA patent/CN103343719A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4864991A (en) * | 1987-12-01 | 1989-09-12 | Snyder Warren E | Method and apparatus for controlling air to gas ratio of gaseous fueled engines |
| CN1837599A (en) * | 2006-04-22 | 2006-09-27 | 蒙国宁 | Air/combustion gas input pressure balancer for mixer of gas engine |
| CN101260845A (en) * | 2007-03-11 | 2008-09-10 | 蒙国宁 | One-valve multiple-door large flow single-stage pressure reducing regulator |
| CN101289972A (en) * | 2008-05-25 | 2008-10-22 | 蒙国宁 | Bidirectional decompression mixer |
| CN101603476A (en) * | 2008-06-12 | 2009-12-16 | 东风南充汽车有限公司 | The air supply system of gas as single fuel motor |
| CN101424229A (en) * | 2008-11-23 | 2009-05-06 | 蒙国宁 | Automatic enriching mixer |
| CN202832864U (en) * | 2012-09-21 | 2013-03-27 | 重庆金之川动力机械有限公司 | Low-pressure gas appliance of gas engine |
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Application publication date: 20131009 |
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