CN102937061B - Methanol supply device for fuel-methanol dual-fuel engine and using method of methanol supply device - Google Patents
Methanol supply device for fuel-methanol dual-fuel engine and using method of methanol supply device Download PDFInfo
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- CN102937061B CN102937061B CN201210490002.4A CN201210490002A CN102937061B CN 102937061 B CN102937061 B CN 102937061B CN 201210490002 A CN201210490002 A CN 201210490002A CN 102937061 B CN102937061 B CN 102937061B
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Abstract
The invention discloses a methanol supply device for a fuel-methanol dual-fuel engine and a using method of the methanol supply device. The methanol supply device comprises a methanol pump, a methanol rail, a rail pressure sensor, a gas inlet pipe and a pressure adjusting device, wherein two ends of the methanol pump are respectively communicated with a methanol box and the methanol rail; the rail pressure sensor and a nozzle which is communicated with the gas inlet pipe are arranged on the methanol rail; an output end of the pressure adjusting device is communicated with the methanol box, and an input end of the pressure adjusting device is communicated with the methanol rail and a gas inlet pressure guide pipe; the other end of the gas inlet pressure guide pipe is communicated with the gas inlet pipe; the methanol pump is a pressure pre-adjustable methanol pump; and the pressure adjusting device is a pressure compensation valve, and the spillway discharge of the pressure adjusting device is set in a mechanical or automatic mode. The methanol supply device can ensure the stability of the differential pressure between the rail pressure and the airway pressure, and the stability of the input methanol quantity of the methanol pump, simplifies a control strategy of methanol quantity output, and enhances the safety of the nozzle.
Description
Technical field
The present invention relates to a kind of methyl alcohol supplier, particularly relate to the methyl alcohol supplier for Ran You – methyl alcohol duel fuel engine and using method, be specifically applicable to by the pressure reduction between the mode stabilizing polyol rail of two-stage pressure-regulating, suction tude.
Background technique
In motor and alternative motor fuels, methyl alcohol all meets the quality requirements that substitute fuel should possess in source, Economy, purification etc., existing application on motor and car load.Methyl alcohol has pure burning as substitute fuel and mixes burning two kinds of application modes, and wherein, pure burning needs to carry out brand-new design to motor, and mixes burning to the inheritance of engine body better, is easier to application.
Because methyl alcohol, fuel oil supply system are relatively independent, therefore, are that one mixes burning mode preferably by oil pilot methyl alcohol, in this approach, mainly adopt scheme methyl alcohol being sprayed into engine air inlet tube.Existing methyl alcohol supply system adopts common rail form, form primarily of alcohol case, alcohol pump, alcohol rail, pressure regulator valve and nozzle, realize the storage of methyl alcohol, methyl alcohol pressurization, the storage of high-pressure methanol, voltage stabilizing and quantitative injection function respectively, wherein, pressure regulator valve have employed the fuel pressure regulating valve of electric-controlled co-rail petrol engine, and nozzle have employed gasoline oil nozzle.Which has following defect:
First, the pressure regulator valve which adopts is fuel pressure regulator, this fuel pressure regulator is mechanical structure, rely on modulating valve diaphragm and carry out pressure regulation, but because the knee-action of diaphragm is apart from limited, once exceed this scope, this fuel pressure regulator just cannot carry out normal regulating to rail pressure (alcohol rail pressure), rail pressure fluctuation is too large, be difficult to guarantee alcohol rail, between suction press, pressure reduction is stable, cause the pressure correction needing to consider rail pressure to the control of nozzle output methanol flow, staking-out work is loaded down with trivial details, add operation easier, therefore, fuel pressure regulator (0 – 20l/h) normally can only work in narrower methanol flow output area,
Secondly, because which tracking cannot compress into row normal regulating in wider methanol flow output area, cause rail pressure fluctuation too large, thus when nozzle export comparatively small flow time, rail pressure is higher, easily exceed the allowable stress of nozzle, face the risk that high-pressure methanol defective nozzle enters cylinder, Security is lower.
Chinese patent Authorization Notice No. is CN200975289Y, authorized announcement date is that the utility model patent on November 14th, 2007 discloses a kind of Spark ignition type electric controlled multi-point single alcohol fuel gas-duct jetting engine, mainly comprise methanol pump, fuel rail, fuel pressure regulator, fuel nozzle, throttle valve body, ECU (Electrical Control Unit) ECU, spark plug and high energy ignition coil, throttle valve body is arranged on engine air inlet tube ingress, spark plug is arranged on former diesel oil of diesel engine nozzle place, spark coil directly controls by ECU (Electrical Control Unit) ECU, and piston compression ratio is 10: 1.Although this model utility is by increasing cold start-up perfect combustion catalizer pump, cold start nozzle, cold start-up assist electronic control unit etc., a single alcohol fuel cold start-up difficult problem is resolved, improve engine thermal efficiency, significantly reduce the discharge of NO2 and particulate matter, but it still have following defect:
First, the pressure regulator valve that this model utility adopts is fuel pressure regulator, this fuel pressure regulator is mechanical structure, rely on modulating valve diaphragm and carry out pressure regulation, shortcoming is described above, not only staking-out work is loaded down with trivial details, and operation easier is higher, and (0 – 20l/h) normally can only work in narrower methanol flow output area;
Secondly, because this model utility tracking cannot compress into row normal regulating in wider methanol flow output area, cause rail pressure fluctuation too large, thus cause the back-pressure surges of alcohol pump too large, make the input alcohol amount of alcohol pump be difficult to stablize, further increase control difficulty nozzle being exported to methanol flow;
Again, because this model utility tracking cannot compress into row normal regulating in wider methanol flow output area, cause rail pressure fluctuation too large, thus when nozzle export comparatively small flow time, rail pressure is higher, easily exceed the allowable stress of nozzle, face the risk that high-pressure methanol defective nozzle enters cylinder, Security is lower.
Summary of the invention
The object of the invention is to overcome defect and problem that being difficult to of existing in prior art guarantee that the input alcohol amount that is stable, alcohol pump of pressure reduction between alcohol rail, suction tude is difficult to stablize, Security is lower, a kind of stable, the methyl alcohol supplier for Ran You – methyl alcohol duel fuel engine that input alcohol amount is stablized, Security is higher that can guarantee alcohol pump that can guarantee pressure reduction between alcohol rail, suction tude are provided.
For realizing above object, technical solution of the present invention is: for the methyl alcohol supplier of Ran You – methyl alcohol duel fuel engine, comprise alcohol pump, alcohol rail, suction pressure conduit and pressure regulator, the input end of described alcohol pump communicates with alcohol case, output terminal communicates with alcohol rail, alcohol rail is provided with multiple nozzle communicated with suction tude, the output terminal of described pressure regulator communicates with alcohol case, input end all communicates with alcohol rail, suction pressure conduit, and the other end of suction pressure conduit communicates with suction tude;
Described methyl alcohol supplier also comprises the rail pressure sensor be arranged on alcohol rail; Be provided with the overflow ducts for pressure regulation in the pump head of described alcohol pump, and the voltage regulating mode of alcohol pump is overflow manner; Described pressure regulator is pressure-compensated valve, and the voltage regulating mode of this pressure-compensated valve is overflow manner.
The setting means of the spillway discharge of described pressure regulator is for machinery setting or automatically set.
The output flow of described nozzle is 0 – 80l/h.
Described nozzle is the automatically controlled nozzle of switch electromagnetic valve control or the automatically controlled nozzle of proportional solenoid valve control.
The using method of the above-mentioned methyl alcohol supplier for Ran You – methyl alcohol duel fuel engine, described using method comprises the following steps successively:
The first step: the traffic requirement first determining the concrete type that described methyl alcohol supplier will be applied and nozzle, again by transporting to alcohol rail by the methyl alcohol that extracts in alcohol case of the alcohol pump of pressure regulation in advance, and carry out first time pressure regulation according to rail pressure, then by alcohol rail, the methyl alcohol after pressurization is carried out to voltage stabilizing and is assigned in each nozzle; Described first time pressure regulation refers to that the overflow ducts in alcohol pump carries out flooded operation with the pressure reduction between stabilizing polyol pump, alcohol rail according to the pressure reduction between alcohol pump, alcohol rail;
Second step: first send control signal to nozzle, in suction tude, methyl alcohol is injected again by nozzle, inject the process of methyl alcohol at nozzle, pressure-compensated valve automatically carries out second time pressure according to the pressure in alcohol rail, suction tude and regulates with the pressure reduction between stabilizing polyol rail, suction tude, and specific operation are:
When rail pressure declines, the spillway discharge of pressure-compensated valve reduces to raise rail pressure automatically, thus guarantees that the pressure reduction between alcohol rail, suction tude is stablized;
When rail pressure rises, the spillway discharge of pressure-compensated valve increases to reduce rail pressure automatically, thus guarantees that the pressure reduction between alcohol rail, suction tude is stablized;
Now, the injection length of Control Nozzle gets final product the flow that Control Nozzle injects suction tude methyl alcohol.
Compared with prior art, beneficial effect of the present invention is:
1, the present invention is can the alcohol pump of pressure regulation in advance for the alcohol pump fired in the methyl alcohol supplier of oily – methyl alcohol duel fuel engine and using method, pressure regulator is pressure-compensated valve, and rail pressure sensor is have employed on alcohol rail, during use, compress into Row sum-equal matrix by the overflow effect tracking of pressure-compensated valve, thus the pressure reduction between stabilizing polyol rail, suction tude, simultaneously, by the overflow effect of overflow ducts in alcohol pump, the pressure reduction between stabilizing polyol pump, rail pressure, guarantees the stable of alcohol pump input alcohol amount.Therefore, the present invention can not only guarantee the stable of pressure reduction between alcohol rail, suction tude, and can guarantee that the input alcohol amount of alcohol pump is stablized.
2, the present invention is used for the methyl alcohol supplier of Ran You – methyl alcohol duel fuel engine and using method can compress into Row sum-equal matrix by the overflow effect tracking of pressure-compensated valve, namely become large when nozzle exports, during rail pressure decay, pressure-compensated valve spillway discharge reduces, and rail pressure is gone up; Diminish when nozzle exports, when rail pressure raises, pressure-compensated valve spillway discharge increases, and rail pressure is reduced; Can guarantee that the flow of nozzle exports and meet usage requirement, rail pressure can be avoided again too high, reduce the danger that nozzle damages.Therefore, the flow that the present invention can not only meet nozzle exports, and enhances the Security of nozzle.
3, the present invention is for firing the methyl alcohol supplier of oily – methyl alcohol duel fuel engine and using method by the alcohol pump of pressure regulation, pressure-compensated valve, rail pressure sensor stabilizing the pressure reduction between pressure reduction between alcohol rail, suction tude and alcohol pump, alcohol rail in advance, make to affect the factor only remaining control time that nozzle exports alcohol amount, and without the need to considering pressure correction, greatly reduce operation easier, improve working efficiency.Therefore, this invention simplifies the control strategy that alcohol amount exports, operation easier is lower.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
In figure: alcohol case 1, alcohol pump 2, alcohol rail 3, pressure regulator 4, nozzle 5, rail pressure sensor 6, suction tude 7, suction pressure conduit 8.
Embodiment
Illustrate that the present invention is further detailed explanation with embodiment below in conjunction with accompanying drawing.
See Fig. 1, for the methyl alcohol supplier of Ran You – methyl alcohol duel fuel engine, comprise alcohol pump 2, alcohol rail 3, suction pressure conduit 8 and pressure regulator 4, the input end of described alcohol pump 2 communicates with alcohol case 1, output terminal communicates with alcohol rail 3, and alcohol rail 3 is provided with multiple nozzle 5 communicated with suction tude 7, the output terminal of described pressure regulator 4 communicates with alcohol case 1, input end all communicates with alcohol rail 3, suction pressure conduit 8, and the other end of suction pressure conduit 8 communicates with suction tude 7;
Described methyl alcohol supplier also comprises the rail pressure sensor 6 be arranged on alcohol rail 3; Be provided with the overflow ducts for pressure regulation in the pump head of described alcohol pump 2, and the voltage regulating mode of alcohol pump 2 is overflow manner; Described pressure regulator 4 is pressure-compensated valve, and the voltage regulating mode of this pressure-compensated valve is overflow manner.
The setting means of the spillway discharge of described pressure regulator 4 is for machinery setting or automatically set.
The output flow of described nozzle 5 is 0 – 80l/h.
The automatically controlled nozzle of the automatically controlled nozzle that described nozzle 5 controls for switch electromagnetic valve or proportional solenoid valve control.
The using method of the above-mentioned methyl alcohol supplier for Ran You – methyl alcohol duel fuel engine, described using method comprises the following steps successively:
The first step: the traffic requirement first determining the concrete type that described methyl alcohol supplier will be applied and nozzle 5, again by alcohol pump 2 methyl alcohol extracted in alcohol case 1 of pressure regulation in advance transporting to alcohol rail 3, and carry out first time pressure regulation according to rail pressure, then by alcohol rail 3, the methyl alcohol after pressurization is carried out to voltage stabilizing and is assigned in each nozzle 5; Described first time pressure regulation refers to that the overflow ducts in alcohol pump 2 carries out flooded operation with the pressure reduction between stabilizing polyol pump 2, alcohol rail 3 according to the pressure reduction between alcohol pump 2, alcohol rail 3;
Second step: first send control signal to nozzle 5, in suction tude 7, methyl alcohol is injected again by nozzle 5, the process of methyl alcohol is injected at nozzle 5, pressure-compensated valve automatically carries out second time pressure according to the pressure in alcohol rail 3, suction tude 7 and regulates with the pressure reduction between stabilizing polyol rail 3, suction tude 7, and specific operation are:
When rail pressure declines, the spillway discharge of pressure-compensated valve reduces to raise rail pressure automatically, thus guarantees that the pressure reduction between alcohol rail 3, suction tude 7 is stablized;
When rail pressure rises, the spillway discharge of pressure-compensated valve increases to reduce rail pressure automatically, thus guarantees that the pressure reduction between alcohol rail 3, suction tude 7 is stablized;
Now, the injection length of Control Nozzle 5 gets final product the flow that Control Nozzle 5 injects suction tude 7 methyl alcohol.
Principle of the present invention is described as follows:
Existing methyl alcohol supply system adopts common rail form, primarily of alcohol case, alcohol pump, alcohol rail, pressure regulator valve and nozzle are formed, realize the storage of methyl alcohol respectively, methyl alcohol pressurizes, the storage of high-pressure methanol, voltage stabilizing and quantitative injection function, wherein, pressure regulator valve have employed the fuel pressure regulating valve of electric-controlled co-rail petrol engine, this pressure regulator valve is that mechanical structure (can see " principle of Auto Electronic Controlled System and maintenance ", publishing house of Beijing Institute of Technology, P87), be 0 – 20l/h to rail pressure (being equivalent to system oil pressure) at 0.25 – 0.3Mpa(corresponding nozzle flow) scope in, can effectively ensure alcohol rail, pressure reduction between suction press keeps constant, be generally 0.25Mpa.But doing in the supply system of fuel with alcohol, because the flow of nozzle is larger, just can replace more oil with alcohol, Economy just can be made to obtain larger improvement, it is large that PM reduces amplitude, also for the catalytic reduction of NOx provides enough reducing agents, thus, require more and more higher, as 0 – 80l/h to the output flow of nozzle.
When the output stream quantitative change of nozzle is large, when namely transferring 0 – 80l/h to by 0 – 20l/h, alcohol rail, between suction tude, the maximum value of pressure reduction also becomes large thereupon, otherwise be difficult to the nozzle flow meeting 80l/h, alcohol rail, between suction tude, the maximum value of pressure reduction becomes large, the maximum value of meaning rail pressure also becomes large, and the minimum value of rail pressure is constant, the wave range of this meaning rail pressure becomes large, namely by 0 – 20l/h for 0.25 – 0.3Mpa transfer to 0 – 80l/h for 1.4 – 5.1Mpa, the pressure regulator valve adopted due to prior art is mechanical structure, the knee-action distance of its inner diaphragm is very limited, thus this rail pressure scope has exceeded the regulation range of the pressure regulator valve that prior art adopts, namely when the quantitative change of nozzle output stream is large, diaphragm reaches lower limit under spring force, can not continue descending, thus the regulating action lost rail pressure, rail pressure continuous decrease, alcohol rail, pressure reduction between suction press can not keep stable, otherwise diaphragm reaches the upper limit, rail pressure continues to rise, and the pressure reduction not only between alcohol rail, suction press can not keep stable, is also easily exposed in higb pressure atmosphere by nozzle, fragile nozzle.Thus, when requiring more and more higher to the output flow of nozzle, the pressure regulator valve that prior art adopts cannot ensure that the pressure reduction between alcohol rail, suction tude is stablized, simultaneously, the fluctuation of rail pressure scope is large, also mean that the back pressure of alcohol pump is in a larger wave range, thus the alcohol amount of alcohol pump input alcohol rail is difficult to stablize.In this case, the parameter of decision fuel injection amount is no longer only the current"on"time that ECU adds to nozzle, also need the impact considering that rail pressure produces, need to carry out pressure correction, and under finding different pressure reduction off-line, to the correction factor of nozzle current"on"time and this curve of output flow, again Coefficient Fitting is become function or make arteries and veins spectrogram write ECU, not only operation easier is very high, and needs a large amount of labor workload, very loaded down with trivial details!
For solving the above prior-art problems, invention increases pressure-compensated valve, can alcohol pump, these three equipment of rail pressure sensor of pressure regulation in advance, concrete effect is as follows:
Pressure reduction between alcohol pump, alcohol rail: the alcohol pump of pressure regulation in advance pump head inside can be provided with adjustable overflow ducts, alcohol pump can according to back pressure (i.e. rail pressure), the spillway discharge of its inside is regulated by overflow ducts, keep the stable of pressure reduction between the pressure of pump head internal liquid, rail pressure, and the driving force of pump is stable, so the flow can guaranteeing alcohol pump supply alcohol rail is stable, and prior art cannot make pressure reduction between the pressure of pump head internal liquid, rail pressure keep certain, the flow of supply alcohol rail is change, thus aggravation rail pressure fluctuation.
Pressure reduction between alcohol rail, suction tude: the present invention adopts pressure-compensated valve, pressure-compensated valve can adjust the pressure surge in a big way by its overflow capability, thus meets the needs of nozzle large discharge output, and specific operation are as follows:
When nozzle output flow diminishes, pressure-compensated valve overflow openings becomes large, and spillway discharge increases, and the flow of alcohol pump output is simultaneously constant, and therefore rail pressure Absorbable organic halogens is in setting value, can not because of high pressure defective nozzle; When the quantitative change of nozzle output stream is large, pressure-compensated valve overflow openings diminishes, and spillway discharge reduces, and simultaneously the flow that exports of alcohol pump is constant, therefore rail pressure also Absorbable organic halogens in setting value.Gain knowledge according to fluid dynamic, rail pressure, aperture (current"on"time of nozzle can be equivalent to) and the proportional relation of ability for alcohol system, rail pressure is certain, then for given system, current"on"time determines the single factor for alcohol ability, is easy to control, and prior art due to nozzle output flow large time, declining to a great extent has appearred in rail pressure, too many for alcohol capability control factor, and institute is restricted for alcohol ability.Thus, for the present invention, the size of nozzle output flow only has corresponding relation with the current"on"time be applied on nozzle, and this relation can measure usually in test room's atmosphere environment, and namely alcohol directly sprays into air.But, in the practical application of alcohol supply system, spray to having in the engine air inlet tube of pressure, this back pressure (suction press) have impact on this relation, suction press only need be introduced pressure-compensated valve by the design, according to the spillway discharge of the value revision pressure-compensated valve of suction press, (this correction both can by the self structure machinery setting of pressure-compensated valve again, the parameter that also can obtain according to sensor sets automatically, do not need to shift to an earlier date fitting function or carry out arteries and veins spectrum, very convenient), thus the curve that direct application test room obtains, enormously simplify control strategy!
Can the alcohol pump of pressure regulation in advance: be a kind of DC micro diaphragm pump, be provided with the overflow ducts for pressure regulation in pump head, its voltage regulating mode is overflow manner, as the DC micro diaphragm pump that Shijiazhuang Cixi power apparatus Co., Ltd produces.
Pressure-compensated valve: adopt overflow manner pressure regulation, other voltage regulating mode is limited in one's ability, is difficult to be suitable for.
Rail pressure sensor: the pressure regulator valve adopted due to prior art is mechanical structure, during use, there is the oil of pressure gentle on implementation capacity direct effect diaphragm therein, thus corresponding adjustment is produced to rail pressure, thus prior art does not adopt the component measuring rail pressure (i.e. alcohol rail pressure).The present invention is that coordinate can alcohol pump, the pressure-compensated valve of pressure regulation in advance, and alcohol rail have employed rail pressure sensor.
Nozzle: be automatically controlled nozzle, comprises two kinds of forms, i.e. switch electromagnetic valve and proportional electromagnetic valve.For switch electromagnetic valve, only have switch two states, the size of flow then can be changed by changing the ratio opened and close in the unit time, opening of solenoid valve is the result having the function of current on coil, electric current is once disappear, solenoid valve can cut out, and the frequency therefore occurred by controlling electric current can control the size of nozzle flow.For proportional electromagnetic valve, spool is except complete shut-down, standard-sized sheet, and is mostly the opening states appeared to a certain degree, and the degree controlling to open then can control output flow, and this proportional electromagnetic valve adopts PWM(pulsewidth and dutycycle) control.
Suction pressure conduit: send the pressure of suction tude to pressure-compensated valve.
Embodiment 1:
For the methyl alcohol supplier of Ran You – methyl alcohol duel fuel engine, comprise alcohol pump 2, alcohol rail 3, suction pressure conduit 8 and pressure regulator 4, the input end of described alcohol pump 2 communicates with alcohol case 1, output terminal communicates with alcohol rail 3, alcohol rail 3 is provided with rail pressure sensor 6 and multiple nozzle 5 communicated with suction tude 7, the output terminal of described pressure regulator 4 communicates with alcohol case 1, and input end all communicates with alcohol rail 3, suction pressure conduit 8, and the other end of suction pressure conduit 8 communicates with suction tude 7; Described alcohol pump 2 is can the alcohol pump of pressure regulation in advance, and be provided with the overflow ducts for pressure regulation in the pump head of alcohol pump 2, the voltage regulating mode of alcohol pump 2 is overflow manner; Described pressure regulator 4 is pressure-compensated valve, and the voltage regulating mode of this pressure-compensated valve is overflow manner, and the setting means of its spillway discharge is for machinery setting or automatically set; The output flow of described nozzle 5 is 0 – 80l/h, the automatically controlled nozzle of the automatically controlled nozzle that nozzle 5 controls for switch electromagnetic valve or proportional solenoid valve control.
The using method of the above-mentioned methyl alcohol supplier for Ran You – methyl alcohol duel fuel engine, described using method comprises the following steps successively:
The first step: the traffic requirement first determining the concrete type that described methyl alcohol supplier will be applied and nozzle 5, again by alcohol pump 2 methyl alcohol extracted in alcohol case 1 of pressure regulation in advance transporting to alcohol rail 3, and carry out first time pressure regulation according to rail pressure, then by alcohol rail 3, the methyl alcohol after pressurization is carried out to voltage stabilizing and is assigned in each nozzle 5; Described first time pressure regulation refers to that the overflow ducts in alcohol pump 2 carries out flooded operation with the pressure reduction between stabilizing polyol pump 2, alcohol rail 3 according to the pressure reduction between alcohol pump 2, alcohol rail 3;
Second step: first send control signal to nozzle 5, in suction tude 7, methyl alcohol is injected again by nozzle 5, the process of methyl alcohol is injected at nozzle 5, pressure-compensated valve automatically carries out second time pressure according to the pressure in alcohol rail 3, suction tude 7 and regulates with the pressure reduction between stabilizing polyol rail 3, suction tude 7, and specific operation are:
When rail pressure declines, the spillway discharge of pressure-compensated valve reduces to raise rail pressure automatically, thus guarantees that the pressure reduction between alcohol rail 3, suction tude 7 is stablized;
When rail pressure rises, the spillway discharge of pressure-compensated valve increases to reduce rail pressure automatically, thus guarantees that the pressure reduction between alcohol rail 3, suction tude 7 is stablized;
Now, the injection length of Control Nozzle 5 gets final product the flow that Control Nozzle 5 injects suction tude 7 methyl alcohol.
For concrete type, enough rail pressures must be had just to guarantee, and nozzle 5 exports high flow, as 80l/h, and rail pressure is too high, the maximum overflow capability of possibility Overpressure of a safety valve recuperation valve again, thus cause rail pressure to raise, therefore for embody rule type, a pressure regulation should be carried out, namely by the alcohol pump 2 of pressure regulation in advance methyl alcohol can be pressurizeed and be input into alcohol rail 3, thus realize first time pressure regulation, this kind of pressure regulation only needs once, its object one is the requirement that the pressure energy guaranteed in alcohol rail 3 meets target flow output, two is guarantee that pressure-compensated valve can be competent at the follow-up rail pressure fluctuation caused because of output flow change and compensate, after a pressure regulation terminates, subsequent operation relies on pressure-compensated valve and carries out, and namely compresses into row second time by pressure-compensated valve tracking and regulates, the pressure reduction between alcohol rail, suction tude is tended towards stability, and second time regulates is carried out, without the need to manual operation automatically by pressure-compensated valve.In such a way, rail pressure Absorbable organic halogens is at about 0.3Mpa, and now, the parameter affecting nozzle 5 output flow can be reduced to current"on"time, for the control of methanol flow offers convenience, enormously simplify control strategy.
Claims (5)
1. for the methyl alcohol supplier of Ran You – methyl alcohol duel fuel engine, comprise alcohol pump (2), alcohol rail (3), suction pressure conduit (8) and pressure regulator (4), the input end of described alcohol pump (2) communicates with alcohol case (1), output terminal communicates with alcohol rail (3), alcohol rail (3) is provided with multiple nozzle (5) communicated with suction tude (7), the output terminal of described pressure regulator (4) communicates with alcohol case (1), input end and alcohol rail (3), suction pressure conduit (8) all communicates, the other end of suction pressure conduit (8) communicates with suction tude (7), it is characterized in that:
Described methyl alcohol supplier also comprises the rail pressure sensor (6) be arranged on alcohol rail (3); Be provided with the overflow ducts for pressure regulation in the pump head of described alcohol pump (2), and the voltage regulating mode of alcohol pump (2) is overflow manner; Described pressure regulator (4) is pressure-compensated valve, and the voltage regulating mode of this pressure-compensated valve is overflow manner.
2. the methyl alcohol supplier for Ran You – methyl alcohol duel fuel engine according to claim 1, is characterized in that: the setting means of the spillway discharge of described pressure regulator (4) is for machinery setting or automatically set.
3. the methyl alcohol supplier for Ran You – methyl alcohol duel fuel engine according to claim 1 and 2, is characterized in that: the output flow of described nozzle (5) is 0 – 80l/h.
4. the methyl alcohol supplier for Ran You – methyl alcohol duel fuel engine according to claim 1 and 2, is characterized in that: the automatically controlled nozzle of the automatically controlled nozzle that described nozzle (5) controls for switch electromagnetic valve or proportional solenoid valve control.
5. the using method of the methyl alcohol supplier for Ran You – methyl alcohol duel fuel engine described in claim 1 or 2, is characterized in that described using method comprises the following steps successively:
The first step: the traffic requirement first determining the concrete type that described methyl alcohol supplier will be applied and nozzle (5), again by transporting to alcohol rail (3) by the methyl alcohol that extracts in alcohol case (1) of the alcohol pump (2) of pressure regulation in advance, and carry out first time pressure regulation according to rail pressure, then by alcohol rail (3), the methyl alcohol after pressurization is carried out to voltage stabilizing and is assigned in each nozzle (5); Described first time pressure regulation refers to that the overflow ducts in alcohol pump (2) carries out flooded operation with the pressure reduction between stabilizing polyol pump (2), alcohol rail (3) according to the pressure reduction between alcohol pump (2), alcohol rail (3);
Second step: first send control signal to nozzle (5), in suction tude (7), methyl alcohol is injected again by nozzle (5), the process of methyl alcohol is injected at nozzle (5), pressure-compensated valve automatically carries out second time pressure according to the pressure in alcohol rail (3), suction tude (7) and regulates with the pressure reduction between stabilizing polyol rail (3), suction tude (7), and specific operation are:
When rail pressure declines, the spillway discharge of pressure-compensated valve reduces to raise rail pressure automatically, thus guarantees that the pressure reduction between alcohol rail (3), suction tude (7) is stablized;
When rail pressure rises, the spillway discharge of pressure-compensated valve increases to reduce rail pressure automatically, thus guarantees that the pressure reduction between alcohol rail (3), suction tude (7) is stablized;
Now, the injection length of Control Nozzle (5) gets final product the flow that Control Nozzle (5) injects suction tude (7) methyl alcohol.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210490002.4A CN102937061B (en) | 2012-11-27 | 2012-11-27 | Methanol supply device for fuel-methanol dual-fuel engine and using method of methanol supply device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210490002.4A CN102937061B (en) | 2012-11-27 | 2012-11-27 | Methanol supply device for fuel-methanol dual-fuel engine and using method of methanol supply device |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0418601A1 (en) * | 1989-09-21 | 1991-03-27 | Robert Bosch Gmbh | Injection device for a diesel engine |
| GB2392957A (en) * | 2002-09-13 | 2004-03-17 | Thomas Tsoi Hei Ma | Method of recharging the fuel pressure accumulator of an i.c. engine fuel injection system |
| CN2908834Y (en) * | 2006-04-06 | 2007-06-06 | 上海内燃机研究所 | Alcohol flexible mixed fuel atomization device |
| CN201187352Y (en) * | 2008-05-08 | 2009-01-28 | 山西成功淮海发动机有限公司 | Methanol fuel engine |
| CN201334950Y (en) * | 2009-01-22 | 2009-10-28 | 天津大学 | Alcohol distributor in alcohol spraying system equipped with YC6J230-20 diesel engine |
| CN101892888A (en) * | 2010-07-26 | 2010-11-24 | 东风汽车有限公司 | Reducing agent filling device for SCR system |
| CN102588124A (en) * | 2012-03-23 | 2012-07-18 | 武汉市菱电汽车电子有限责任公司 | Automobile dual-fuel supply system based on single fuel rail and single fuel injector set |
| CN203009124U (en) * | 2012-11-27 | 2013-06-19 | 东风汽车有限公司 | Methanol supply device for fuel-methanol dual-fuel engine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE511489C2 (en) * | 1998-02-27 | 1999-10-04 | Volvo Ab | Method and fuel system for filling the cold start tank |
-
2012
- 2012-11-27 CN CN201210490002.4A patent/CN102937061B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0418601A1 (en) * | 1989-09-21 | 1991-03-27 | Robert Bosch Gmbh | Injection device for a diesel engine |
| GB2392957A (en) * | 2002-09-13 | 2004-03-17 | Thomas Tsoi Hei Ma | Method of recharging the fuel pressure accumulator of an i.c. engine fuel injection system |
| CN2908834Y (en) * | 2006-04-06 | 2007-06-06 | 上海内燃机研究所 | Alcohol flexible mixed fuel atomization device |
| CN201187352Y (en) * | 2008-05-08 | 2009-01-28 | 山西成功淮海发动机有限公司 | Methanol fuel engine |
| CN201334950Y (en) * | 2009-01-22 | 2009-10-28 | 天津大学 | Alcohol distributor in alcohol spraying system equipped with YC6J230-20 diesel engine |
| CN101892888A (en) * | 2010-07-26 | 2010-11-24 | 东风汽车有限公司 | Reducing agent filling device for SCR system |
| CN102588124A (en) * | 2012-03-23 | 2012-07-18 | 武汉市菱电汽车电子有限责任公司 | Automobile dual-fuel supply system based on single fuel rail and single fuel injector set |
| CN203009124U (en) * | 2012-11-27 | 2013-06-19 | 东风汽车有限公司 | Methanol supply device for fuel-methanol dual-fuel engine |
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| CN102937061A (en) | 2013-02-20 |
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