CN202900425U - Fuel oil and gas controlling and switching system of dual-fuel internal combustion engine - Google Patents
Fuel oil and gas controlling and switching system of dual-fuel internal combustion engine Download PDFInfo
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- CN202900425U CN202900425U CN2012205885667U CN201220588566U CN202900425U CN 202900425 U CN202900425 U CN 202900425U CN 2012205885667 U CN2012205885667 U CN 2012205885667U CN 201220588566 U CN201220588566 U CN 201220588566U CN 202900425 U CN202900425 U CN 202900425U
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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
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- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
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Abstract
The utility model discloses a fuel oil and gas controlling and switching system of a dual-fuel internal combustion engine. The system comprises a fuel oil and gas control valve, an automatic gas pressure regulating valve and gas inlet manifolds. The fuel oil and gas control valve is connected with the automatic gas pressure regulating valve by a control pipeline, the gas inlet manifolds are communicated with a gas inlet header pipe and are used for supplying gas to various cylinders of the internal combustion engine, each gas inlet manifold is provided with a single-cylinder gas control valve, each single-cylinder gas control valve is connected with a single-cylinder gas nozzle, and the gas inlet header pipe is connected with a gas pipe by the automatic gas pressure regulating valve. The relative position of a valve spool of the fuel oil and gas control valve is changed under a push-pull effect of a fuel oil control rod of a high-pressure oil pump of the internal combustion engine, and slow-opening and quick-closing type opening and closing actions of the automatic gas pressure regulating valve are realized by the aid of the control pipeline, so that purposes of automatically regulating fuel oil and the gas and switching between the fuel oil and the gas when load of the internal combustion engine is increased or is suddenly discharged or is stable and the gas is disconnected and is supplied again are achieved.
Description
Technical field
The utility model relates to the control technique of two kinds of fuel of bi-fuel internal combustion engine, specifically bi-fuel internal combustion engine fuel oil, combustion gas control and converting system.
Background technique
At present because the requirement of the continuous soaring and environmental protection of light fuel price, country actively promotes the alternative fuel of environmental protection and energy saving, special promotion will substitute with bi-fuel internal combustion engine the internal-combustion engine of light fuel from now on, to reduce the operation cost of boats and ships and generator set, the discharge amount of decrease NOx.Each large shipping enterprise is also in the urgent need to adopting bi-fuel internal combustion engine, to strive for reaching national requirements for environmental protection.
Present situation with regard to current each internal-combustion engine enterprise development, mostly adopt pre-mixed mode or adopt mixed mode dual mode in single cylinder air inlet, the cylinder: wherein adopt pre-mixed mode, being combustion gas mixes before supercharging with air, then after the pressurized machine supercharging, enter the inlet box of internal-combustion engine, the combustion gas that mixes and air enter combustor inner cylinder simultaneously.There is very large shortcoming in this hybrid mode: there is great potential safety hazard at first this hybrid mode, owing to store a large amount of combination gass in the inlet box, and combination gas and firing chamber are just across suction valve, for multi-cylinder engine, be difficult to guarantee that in running each suction valve seals, poorly sealed if there is individual other suction valve, have flame and alter and enter inlet box, cause whole inlet box blast, may threaten black gang's life and safety of ship.Next is because internal-combustion engine all needs the intake and exhaust overlapping angle, so that scavenging reduces delivery temperature.When internal-combustion engine was in intake and exhaust unlatching overlap condition, a large amount of combustion gas also can be discharged to along with scavenging in the environment, caused a large amount of combustion gas wastes.Also can cause simultaneously the blast of combustion gas in smoke-ejecting pipe.And the mode of the air inlet of the second employing single cylinder, the interior mixing of cylinder is the safest mode, and middling speed internal-combustion engine enterprise is in such a manner exploitation all.But because domestic gas control system imperfection also, thereby mostly adopt this graceful dual-fuel control system of German glycolylurea.Adopt this graceful control system of glycolylurea that its several weakness are arranged: 1, because this graceful control system of glycolylurea belongs to monopoly position at home, and it holds at high price, to have increased very high cost for the exploitation of double fuel machine.2, the life-span of its combustion gas control high-speed electromagnetic valve shorter, generally can only use about a year and a half and will change, increase a lot of burdens for later operation and maintenance.3, the substitution rate of combustion gas does not reach requirement, can only be substituted into 80% at present, is difficult to reach the substitution rate more than 90%.In view of above reason, it is imperative to break external monopolization therefore to develop new control system.
Summary of the invention
Technical problem to be solved in the utility model is for above-mentioned prior art present situation, and provide the combustion gas substitution rate in the time reaching the fuel oil priority principle more than 90% and when loading impact and realize that double fuel machine load increases, automatically regulating gas advances machine pressure, the combustion gas that enters cylinder is increased automatically, to satisfy a kind of bi-fuel internal combustion engine fuel oil, combustion gas control and the converting system of fuel gas supply under the different load.This system has realized the purpose of mixing in single cylinder air inlet, the cylinder, meets the growth requirement of the current safety environmental protection and saving energy.
The utility model solves the problems of the technologies described above the technological scheme that adopts: the bi-fuel internal combustion engine fuel oil, combustion gas control and converting system, this system comprises the fuel-firing gas-firing control valve that linked to each other by pilot line and combustion gas automatic pressure regulator and is connected with the intake manifold and is used to each cylinder of internal-combustion engine that the intake manifold of combustion gas is provided, each intake manifold all is fitted with the single cylinder gas control valve, each single cylinder gas control valve all is connected with the single cylinder gas nozzle, the intake manifold is connected with fuel tube through the combustion gas automatic pressure regulator, the fuel-firing gas-firing control valve is subjected to the push-and-pull action of internal combustion engine high pressure oil pump fuel oil controlling rod to change the relative position of spool, realize that by pilot line the combustion gas automatic pressure regulator opens the switching motion of fast pass formula slowly, reach that engine load increases or prominent unloading, automatic adjusting and the switching for seasonable fuel oil and two kinds of fuel of combustion gas replied in steady load and combustion gas disconnection and combustion gas.
For optimizing technique scheme, Adopts measure also comprises:
Above-mentioned fuel-firing gas-firing control valve comprises above-mentioned spool and valve body and opens slowly quick-closing valve; Spool is slidingly arranged in the valve pocket that valve body is shaped with, and this valve body is shaped with respectively the inlet hole that is communicated with valve pocket, the exhaust port of giving vent to anger the duct and communicating with the external world, the duct expansion of giving vent to anger is shaped with the second valve pocket that cooperates formation with valve gap, slowly opening quick-closing valve is slidingly mounted in the second valve pocket, valve gap is shaped with the air outlet, this air outlet is connected with the duct of giving vent to anger through opening slowly quick-closing valve, and valve body is shaped with the bleeder port that is communicated with the second valve pocket.
The above-mentioned periphery wall of opening slowly quick-closing valve slides with the inner wall sealing of the second valve pocket and matches, the center of opening slowly quick-closing valve is shaped with for the give vent to anger middle connecting passage of duct and air outlet of connection, this centre connecting passage comprises the macropore connecting passage that is positioned at the duct end of giving vent to anger and is positioned at air outlet end and the capillary attachment hole that the macropore connecting passage is communicated with successively, in the second valve pocket seal ring is installed.
Above-mentioned spool is shaped with slide blocking-up or conducting give vent to anger duct and inlet hole, the annular boss of give vent to anger duct and exhaust port, and this annular boss perisporium matches with the inner wall sealing slip of valve pocket, and the front end that spool stretches out valve pocket is connected with the fuel oil controlling rod through rocker.
Above-mentioned combustion gas automatic pressure regulator comprises pressure regulation valve body and adjusting pressuring valve core and piston, described pressure regulation valve body be shaped with respectively with the gas outlet of intake manifold docking with fuel gas inlet and the epicoele suction port that links to each other with pilot line and the cavity of resorption porting of fuel tube docking, adjusting pressuring valve core rotates and is fitted in the pressure regulation valve pocket of pressure regulation valve body, piston slides and to be fitted in the control chamber that the pressure regulator valve system has, and this piston reciprocating type motion drives the gas supply amount that adjusting pressuring valve core rotates the regulation and control intake manifold.
Above-mentioned pressure regulation valve pocket is vertical with control chamber to communicate, the adjusting pressuring valve core liquid sealing is rotatably installed in the pressure regulation valve pocket, this adjusting pressuring valve core radial system is useful on the radial direction through hole that is communicated with gas outlet and fuel gas inlet, and the end that adjusting pressuring valve core stretches into control chamber is shaped with outer tooth bar, piston is shaped with the bar tooth that is meshed with this outer tooth bar, and the outer rack drives adjusting pressuring valve core that the bar tooth engagement of piston promotes adjusting pressuring valve core rotates the automatic adjusting that the gas supply amount is realized at the phase angle that changes radial direction through hole.
Above-mentioned single cylinder gas control valve is by the jogger hole that is shaped with on the air inlet push rod of internal-combustion engine and the internal-combustion engine and be communicated with respectively jogger hole and push rod inlet hole and push rod air outlet hole that radial symmetric distributes form; The air inlet push rod is installed with the ram piston that slides and be equipped with the jogger hole hermetic seal, the side face of this ram piston is shaped with the annular channel that is used for being communicated with together push rod inlet hole and push rod air outlet hole, ram piston is driven by the control of the intake cam of internal-combustion engine that the air inlet push rod is reciprocating realizes the conducting between push rod inlet hole and push rod air outlet hole or close that intake manifold is connected to push rod inlet hole one end simultaneously.
Above-mentioned pilot line comprises control house steward and control arm and advances to arrange control valve, control house steward's outlet side is connected with the inlet hole of fuel-firing gas-firing control valve, one end of control arm is connected with the control house steward, the other end is connected to the epicoele suction port of combustion gas automatic pressure regulator, and the two ends of advancing to arrange control valve are connected with the air outlet of fuel-firing gas-firing control valve and the cavity of resorption porting of combustion gas automatic pressure regulator respectively.
Above-mentioned pilot line is the hydraulic control circuit take hydraulic pressure as power source.
Above-mentioned pilot line is the pneumatic pilot line take pressurized air as power source.
Compared with prior art; the utility model is set up to be had take hydraulic pressure or pneumatic pilot line as power source; be connected with fuel-firing gas-firing control valve and combustion gas automatic pressure regulator by pilot line; the fuel-firing gas-firing control valve is controlled by the fuel oil controlling rod; the fuel oil controlling rod is moved by the automatic promotion drive fuel-firing gas-firing control valve of high pressure oil pump speed regulator under different operating modes; the fuel-firing gas-firing control valve is opened the switching motion of fast pass formula slowly by pilot line realization combustion gas automatic pressure regulator; realize the automatic conversion of fuel oil and two kinds of fuel of combustion gas, guaranteed that the double fuel machine is in operation to shut down the automatic adjusting that just can realize two kinds of fuel.The utility model also has the following advantages:
1, realizes the purpose of mixing in single cylinder air inlet, the cylinder, improved Security.
2, consistent with the diesel engine of pure fuel oil, when the intake and exhaust overlapping angle is constant, avoid combustion gas in the loss of scavenging.
3, part life is long, can reach more than 30,000 hours.
4, the fuel oil substitution rate is high, can reach more than 90%.
5, cost is low, and the cost of every machine increase is in 10,000 yuan.
6, can break external monopolization, develop the dual-fuel control system of independent intellectual property right.
Description of drawings
Fig. 1 is the utility model embodiment's principle schematic;
Fuel oil, combustion gas control principle schematic representation when Fig. 2 is the increase of the utility model load;
Fuel oil, combustion gas phase diagram when Fig. 3 is the utility model steady load;
Fig. 4 is the structural representation of Fig. 1 intermediate fuel oil gas control valve;
Fig. 5 is the structural representation of combustion gas automatic pressure regulator among Fig. 1;
Fig. 6 is the left view of Fig. 5;
Fig. 7 is single cylinder gas control valve structural representation among Fig. 1.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.
Fig. 1 is to Figure 7 shows that structure of the present utility model and working principle schematic representation.
Reference character wherein is: the inlet hole A that is communicated with valve pocket, duct B gives vent to anger, exhaust port C, air outlet D, bleeder port E, fuel-firing gas-firing control valve 1, valve body 11, spool 12, annular boss 121, slowly open quick-closing valve 13, macropore connecting passage 131, capillary attachment hole 132, valve gap 14, combustion gas automatic pressure regulator 2, pressure regulation valve body 21, epicoele suction port 211, cavity of resorption porting 212, control chamber 213, fuel gas inlet 214, gas outlet 215, adjusting pressuring valve core 22, radial direction through hole 22a, outer tooth bar 221, piston 23, bar tooth 231, the intake manifold 3, intake manifold 31, single cylinder gas nozzle 4, single cylinder gas control valve 5, jogger hole 5a, push rod inlet hole 5b, push rod air outlet hole 5c, air inlet push rod 51, ram piston 52, annular channel 52a, fuel tube 6, fuel oil controlling rod 7; rocker 71; intake cam 8; control house steward 91; control arm 92; advance to arrange control valve 93.
Shown in Fig. 1 to 7, bi-fuel internal combustion engine fuel oil of the present utility model, combustion gas control and converting system, this system comprises the fuel-firing gas-firing control valve 1 that linked to each other by pilot line and combustion gas automatic pressure regulator 2 and is connected with intake manifold 3 and is used to each cylinder of internal-combustion engine that the intake manifold 31 of combustion gas is provided, each intake manifold 31 all is fitted with single cylinder gas control valve 5, each single cylinder gas control valve 5 all is connected with single cylinder gas nozzle 4, intake manifold 3 is connected with fuel tube 6 through combustion gas automatic pressure regulator 2, fuel-firing gas-firing control valve 1 is subjected to the push-and-pull action of internal combustion engine high pressure oil pump fuel oil controlling rod 7 to change the relative position of spool 12, realize that by pilot line combustion gas automatic pressure regulator 2 opens the switching motion of fast pass formula slowly, reach that engine load increases or prominent unloading, automatic adjusting and the switching for seasonable fuel oil and two kinds of fuel of combustion gas replied in steady load and combustion gas disconnection and combustion gas.Pilot line is for the pneumatic pilot line take pressurized air as power source or be the hydraulic control circuit take hydraulic pressure as power source.Be that control system can be that to add gas control also can be the system of hydraulic control to machinery.Single cylinder gas nozzle 4 of the present utility model is the wing body that two surfaces all have upper globoidal structure, and wing body inner part drilling has inlet hole, is drilled with the little spray orifice that is connected with inner inlet hole two cambered surfaces.When pressurized air enters cylinder, because the rapid flow of pressurized air produces negative pressure in the nozzle cambered surface, utilize jet current principle that combustion gas is sprayed, and after mixing, air enters cylinder.
Embodiment one, the pneumatic pilot line of the utility model take pressurized air as power source is described in further detail: among the embodiment, native system mainly is comprised of fuel-firing gas-firing control valve 1, combustion gas automatic pressure regulator 2, single cylinder gas control valve 5 and 4 four formant parts of single cylinder gas nozzle and control pipeline.The control pipeline provides pressurized air by compressed pneumatic pump, and the control pipeline comprises control house steward 91 and control arm 92 and advances to arrange control valve 93.Can find out that from Fig. 1 to Fig. 3 control house steward's 91 a end directly links to each other with compressed pneumatic pump, control house steward's 91 the other end is connected to the inlet hole A of fuel-firing gas-firing control valve 1.One end of control arm 92 is connected with control house steward 91, the other end is connected to the epicoele suction port 211 of combustion gas automatic pressure regulator 2, and the two ends of advancing to arrange control valve 93 are connected with the air outlet D of fuel-firing gas-firing control valve 1 and the cavity of resorption porting 212 of combustion gas automatic pressure regulator 2 respectively.
As shown in Figure 4, fuel-firing gas-firing control valve 1 comprises spool 12 and valve body 11 and opens slowly quick-closing valve 13; Spool 12 is slidingly arranged in the valve pocket that valve body 11 is shaped with, and this valve body 11 is shaped with respectively inlet hole A, the exhaust port C that gives vent to anger duct B and communicate with the external world that is communicated with valve pocket, the duct B that gives vent to anger expansion is shaped with the second valve pocket that cooperates formation with valve gap 14, slowly opening quick-closing valve 13 is slidingly mounted in the second valve pocket, valve gap 14 is shaped with air outlet D, this air outlet D is connected with the duct B that gives vent to anger through opening slowly quick-closing valve 13, and valve body 11 is shaped with the bleeder port E that is communicated with the second valve pocket.
Slowly the periphery wall of opening quick-closing valve 13 slides with the inner wall sealing of the second valve pocket and matches, the center of opening slowly quick-closing valve 13 is shaped with for the give vent to anger middle connecting passage of duct B and air outlet D of connection, this centre connecting passage comprises that the macropore connecting passage 131 that is positioned at the duct B end of giving vent to anger is equipped with seal ring with being positioned in capillary attachment hole 132, the second valve pockets that air outlet D holds with macropore connecting passage 131 is communicated with successively.
Fuel-firing gas-firing control valve 1 is by rocking arm 71 controls on the fuel oil controlling rod 7 of high pressure oil pump, when the double fuel machine is in minimum amount of fuel, the spool 12 of fuel-firing gas-firing control valve 1 as shown in Figure 4, the duct B that gives vent to anger this moment is communicated with exhaust port C, exhaust port C connects extraneous, combustion gas automatic pressure regulator 2 is in by state under the 211 compressed-air actuated effects of epicoele suction port like this, and the double fuel machine stops gas supply.When load increases, fuel oil controlling rod 7 is under the promotion of speed regulator, automatic oiling, fuel oil controlling rod 7 moves, driving rocking arm 71 swings, the spool 12 that is attached thereto simultaneously the fuel-firing gas-firing control valve 1 that connects is also thereupon mobile, make spool 12 be in the state of inlet hole A and the duct B connection of giving vent to anger, pressurized air enters in the control chamber 213 of combustion gas automatic pressure regulator 2 from advancing to arrange control valve 93, promoting adjusting pressuring valve core 22 by piston 23 opens combustion gas automatic pressure regulator 2, make combustion gas enter the intake manifold 3 of double fuel machine, be equipped with on the B of duct owing to give vent to anger and open slowly quick-closing valve 13, when opening combustion gas automatic pressure regulator 2, pressurized air air inlet when opening slowly the capillary attachment hole 132 of quick-closing valve 13 is slower, combustion gas automatic pressure regulator 2 is slowly opened, rather than opened fast.When combustion gas is not replenished fast, under the effect of speed regulator, can only with diesel oil as a supplement, so just realize the preferential principle of fuel oil when the load impact.Unlatching along with combustion gas automatic pressure regulator 2, combustion gas participates in burning, make fuel oil too much, speed regulator begins to promote fuel oil controlling rod 7 and reduces amount of fuel, the spool 12 that also spurs simultaneously fuel-firing gas-firing control valve 1 moves, move to the position of covering give vent to anger duct B and inlet hole A, at this moment automatic control valve for gaseous fuel 2 no longer moves, and is in stable operation stage always.If load has the trace change, then regulated by fuel oil.When loading prominent unloading, speed regulator promotes fuel oil controlling rod 2 and continues to reduce amount of fuel, the spool 12 that drives fuel-firing gas-firing control valve 1 moves, the duct B that will give vent to anger opens, C is in communication with the outside by exhaust port, pressurized air in combustion gas automatic pressure regulator 2 control pistons 23 is emitted, combustion gas automatic pressure regulator 2 autoshutdowns, combustion gas stops to participate in burning.When the pressurized air of combustion gas automatic pressure regulator 2 is discharged, owing to open slowly the throttling of the capillary attachment hole 132 of quick-closing valve 13, make and open slowly quick-closing valve 13 and move, the bleeder port E that will link to each other with the external world opens, air is discharged fast by bleeder port E, realizes the quick closedown of automatic control valve for gaseous fuel 2.
As shown in Figure 5 and Figure 6, combustion gas automatic pressure regulator 2 comprises pressure regulation valve body 21 and adjusting pressuring valve core 22 and piston 23, pressure regulation valve body 21 be shaped with respectively with the gas outlet 215 of intake manifold 3 docking with fuel gas inlet 214 and the epicoele suction port 211 that links to each other with pilot line and the cavity of resorption porting 212 of fuel tube 6 docking, adjusting pressuring valve core 22 rotates and is fitted in the pressure regulation valve pocket of pressure regulation valve body 21, piston 23 slides and is fitted in the control chamber 213 that pressure regulation valve body 21 is shaped with, and these piston 23 reciprocatory motions drive the gas supply amount that adjusting pressuring valve core 22 rotates regulation and control intake manifolds 3.
Can clearly see from Fig. 6, pressure regulation valve pocket and control chamber 213 vertical communicating, adjusting pressuring valve core 22 liquid sealings are rotatably installed in the pressure regulation valve pocket, these adjusting pressuring valve core 22 radial systems are useful on the radial direction through hole 22a that is communicated with gas outlet 215 and fuel gas inlet 214, and the end that adjusting pressuring valve core 22 stretches into control chamber is shaped with outer tooth bar 221, piston 23 is shaped with the bar tooth 231 that is meshed with this outer tooth bar 221, and the outer tooth bar 221 drive adjusting pressuring valve cores 22 that bar tooth 231 engagements of piston 23 promote adjusting pressuring valve core 22 rotate the automatic adjusting that the gas supply amount is realized at the phase angle that changes radial direction through hole 22a.
Mainly two ends are compressed-air actuated about in the of 23 advances row and reach piston 23 pulling adjusting pressuring valve cores 22 and rotate by piston for combustion gas automatic pressure regulator 2, realize the break-make of 6 of intake manifold 3 and fuel tube, piston 23 then utilizes the formed pressure difference of the area difference of upper and lower surface, piston 23 is moved, promote adjusting pressuring valve core 22 and open.When the double fuel machine is loaded prominent unloading, the cavity of resorption porting 212 of piston 23 communicates with the external world by fuel-firing gas-firing control valve 1 pressurized air is discharged, the pressurized air pushing piston 23 of the epicoele suction port 211 of piston 23 moves, and closes combustion gas automatic pressure regulator 2, realizes the automatic adjusting of gaseous-pressure.
As can be seen from Figure 7, single cylinder gas control valve 5 of the present utility model is by the jogger hole 5a that is shaped with on the air inlet push rod 51 of internal-combustion engine and the internal-combustion engine and be communicated with respectively jogger hole 5a and push rod inlet hole 5b and push rod air outlet hole 5c that radial symmetric distributes form; Air inlet push rod 51 is installed with the ram piston 52 that slides and be equipped with jogger hole 5a hermetic seal, the side face of this ram piston 52 is shaped with the annular channel 52a that is used for being communicated with together push rod inlet hole 5b and push rod air outlet hole 5c, ram piston 52 is driven by intake cam 8 control of internal-combustion engine that air inlet push rod 51 is reciprocating to be realized simultaneously the conducting between push rod inlet hole 5b and push rod air outlet hole 5c or close, intake manifold 3 is communicated with the intake manifold 31 that is used to each cylinder of internal-combustion engine that combustion gas is provided, each intake manifold 31 all is fitted with single cylinder gas control valve 5, each single cylinder gas control valve 5 all is connected with single cylinder gas nozzle 4, intake manifold 3 is connected with fuel tube 6 through combustion gas automatic pressure regulator 2, and intake manifold 31 is connected to push rod inlet hole 5b one end.Single cylinder gas nozzle 4 is connected to push rod air outlet hole 5c one end by high-pressure air pipe.
The working principle of single cylinder gas control valve 5 is: air inlet push rod 51 is subjected to intake cam 8 controls, when air inlet push rod 51 is in the basic circle position of intake cam 8, be not communicated with between the push rod inlet hole 5b on the annular channel 52a on the ram piston 52 and the body and push rod air outlet hole 5c, combustion gas is in by state; When intake cam 8 rotates, air inlet push rod 51 jack-up, when reaching the intake and exhaust overlapping angle near closed condition, annular channel 52a on the ram piston 52 begins to be communicated with push rod inlet hole 5b and push rod air outlet hole 5c on the body, combustion gas enters single cylinder gas nozzle 4 by push rod inlet hole 5b and push rod air outlet hole 5c, along with pressurized air enters in the cylinder.Intake cam 8 is rotated further, and 51 beginnings of air inlet push rod are descending, and when ram piston 52 covered push rod inlet hole 5b and push rod air outlet hole 5c, gas inlet stopped, so repeatedly.
Working principle of the present utility model is:
When the double fuel machine is in minimum Pilot diesel flow rate running, when not needing combustion gas to participate in acting, whole system is in the working state such as Fig. 1, the spool 12 of the combustion gas oil control valve 1 of this moment is between the turnover gas sky (combustion gas oil control valve 1 residing state among Fig. 1), this moment, inlet hole A and the duct B that gives vent to anger were because the partition of spool 12 annular boss 121 is isolated, and two holes can not be communicated with.Pressurized air can't be by combustion gas oil control valve 1.And combustion gas automatic pressure regulator 2 cavity of resorption portings 212 are owing to link to each other with the air outlet D of combustion gas oil control valve 1 through advancing to arrange control valve 93, air outlet D communicates with the external world this moment, and the piston 23 of combustion gas automatic pressure regulator 2 moves down drive adjusting pressuring valve core 22 the combustion gas automatic pressure regulator is closed under the effect of control arm 92 air inlets.
In double fuel machine load increase process, the fuel oil controlling rod 7 of high pressure oil pump is under the promotion of speed regulator, move to refueling position, spool 12 actions by the rocking arm 71 pulling fuel-firing gas-firing control valves 1 on the fuel oil controlling rod 7, make spool 12 be in as shown in Figure 2 state, pressurized air enters the duct B that gives vent to anger of fuel-firing gas-firing control valve 1 through the inlet hole A of fuel-firing gas-firing control valve 1, owing to open slowly the damping function of the capillary attachment hole 132 of quick-closing valve 13, make that to open slowly quick-closing valve 13 slowly mobile, stop up bleeder port E, pressurized air can only enter from air outlet D the cavity of resorption porting 212 of combustion gas automatic pressure regulator 2 through advancing to arrange control valve 93, because capillary attachment hole 132 diameters are less, pressurized air enters slower, makes the piston 23 of fuel-firing gas-firing control valve 1 slowly mobile, prolongs the opening time of fuel-firing gas-firing control valve 1, reach the preferential purpose of load increase process intermediate fuel oil, behind steady load, speed regulator promotes fuel oil controlling rod 7 to the reverse movement that subtracts oil, and gaseous-pressure is also increasing.When the annular boss 121 of fuel-firing gas-firing control valve 1 spool 12 arrived and covers pressurized air fully and give vent to anger duct B, this moment, gaseous-pressure increased and the minimizing of fuel oil stops, and reached steady operational status, as shown in Figure 3.When the load trace becomes, drive 7 fine motions of fuel oil controlling rod by speed regulator, replenished the trace change of load by fuel oil.
When loading prominent unloading, fuel oil controlling rod 7 is under the promotion of speed regulator, and to the reverse movement that subtracts oil, owing to be to load to dash forward to unload, speed regulator is reduced to minimum position with amount of fuel.Reach state shown in Figure 1.The spool 12 of fuel-firing gas-firing control valve 1 is pulled to position, the end, and air outlet D is in communication with the outside through exhaust port C, and the pressurized air of combustion gas automatic pressure regulator 2 is emitted, and is discharged to the external world.Owing to open slowly the damping function of quick-closing valve 13, make and open slowly quick-closing valve 13 and move, get out of the way the bleeder port E that is in communication with the outside, pressurized air is emitted fast, reach the purpose of quick closedown combustion gas automatic pressure regulator 2, prevent from continuing to enter the consequence that cylinder produces driving because of combustion gas.
The utility model has the advantages that the automatic conversion that can realize two kinds of fuel, do not switch and do not need to shut down.When gaseous fuel disconnected, speed regulator can automatically promote fuel oil controlling rod 7 and move to the oiling direction, strengthens amount of fuel.This moment, the utility model was in state shown in Figure 2, pressurized air is opened to maximum to combustion gas automatic pressure regulator 2, because combustion gas disconnects, does not have combustion gas to enter and participates in burning in the cylinder, the double fuel machine can only use pure liquid fuel, and at this moment the double fuel machine just becomes full diesel; When supply is replied in combustion gas, the combustion gas automatic pressure regulator 2 of this moment also is in opening state, the combustion gas meeting enters cylinder at once and participates in burning, because the double fuel machine increases the fuel supply, the double fuel motor speed rises, speed regulator promotes immediately fuel oil controlling rod 7 and moves to subtracting oily direction, shift fuel oil controlling rod 7 onto position shown in Figure 1, at this moment system's compressed air can promote the piston 23 of combustion gas automatic pressure regulator 2 to the direction rotation that reduces circulation area, reduce gas inlet pressure, reduce the gas quantity that enters cylinder.When the supply of combustion gas reached double fuel machine operating conditions, speed regulator was shifted the fuel oil controlling rod onto position shown in Figure 3, again stable operation.
Claims (10)
1. bi-fuel internal combustion engine fuel oil, combustion gas control and converting system, it is characterized in that: this system comprises the fuel-firing gas-firing control valve (1) that linked to each other by pilot line and combustion gas automatic pressure regulator (2) and is connected with intake manifold (3) and is used to each cylinder of internal-combustion engine that the intake manifold (31) of combustion gas is provided, described each intake manifold (31) all is fitted with single cylinder gas control valve (5), each single cylinder gas control valve (5) all is connected with single cylinder gas nozzle (4), and described intake manifold (3) is connected with fuel tube (6) through combustion gas automatic pressure regulator (2).
2. bi-fuel internal combustion engine fuel oil according to claim 1, combustion gas control and converting system, it is characterized in that: described fuel-firing gas-firing control valve (1) comprises above-mentioned spool (12) and valve body (11) and opens slowly quick-closing valve (13); Described spool (12) is slidingly arranged in the valve pocket that valve body (11) is shaped with, and this valve body (11) is shaped with respectively the inlet hole (A) that is communicated with valve pocket, the exhaust port (C) of giving vent to anger duct (B) and communicating with the external world, the described duct of giving vent to anger (B) expansion is shaped with the second valve pocket that cooperates formation with valve gap (14), the described quick-closing valve (13) of opening slowly is slidingly mounted in the second valve pocket, described valve gap (14) is shaped with air outlet (D), this air outlet (D) is connected with the duct of giving vent to anger (B) through opening slowly quick-closing valve (13), and described valve body (11) is shaped with the bleeder port (E) that is communicated with the second valve pocket.
3. bi-fuel internal combustion engine fuel oil according to claim 2, combustion gas control and converting system, it is characterized in that: the described periphery wall of opening slowly quick-closing valve (13) slides with the inner wall sealing of the second valve pocket and matches, the center of opening slowly quick-closing valve (13) is shaped with for the give vent to anger middle connecting passage of duct (B) and air outlet (D) of connection, this centre connecting passage comprises the macropore connecting passage (131) that is positioned at the duct of giving vent to anger (B) end and is positioned at air outlet (D) end and the capillary attachment hole (132) that macropore connecting passage (131) is communicated with successively, in described the second valve pocket seal ring is installed.
4. bi-fuel internal combustion engine fuel oil according to claim 3, combustion gas control and converting system, it is characterized in that: described spool (12) is shaped with slide blocking-up or conducting give vent to anger duct (B) and inlet hole (A), the give vent to anger annular boss (121) of duct (B) and exhaust port (C), this annular boss (121) perisporium slides with the inner wall sealing of valve pocket and matches, and the front end that described spool (12) stretches out valve pocket is connected with fuel oil controlling rod (7) through rocker (71).
5. bi-fuel internal combustion engine fuel oil according to claim 4, combustion gas control and converting system, it is characterized in that: described combustion gas automatic pressure regulator (2) comprises pressure regulation valve body (21) and adjusting pressuring valve core (22) and piston (23), described pressure regulation valve body (21) be shaped with respectively with the gas outlet (215) of intake manifold (3) docking with fuel gas inlet (214) and the epicoele suction port (211) that links to each other with pilot line and the cavity of resorption porting (212) of fuel tube (6) docking, described adjusting pressuring valve core (22) rotates and is fitted in the pressure regulation valve pocket of pressure regulation valve body (21), described piston (23) slides and to be fitted in the control chamber (213) that pressure regulation valve body (21) is shaped with, and this piston (23) reciprocatory motion drives the gas supply amount that adjusting pressuring valve core (22) rotates regulation and control intake manifolds (3).
6. bi-fuel internal combustion engine fuel oil according to claim 5, combustion gas control and converting system, it is characterized in that: described pressure regulation valve pocket and vertical the communicating of control chamber (213), described adjusting pressuring valve core (22) liquid sealing is rotatably installed in the pressure regulation valve pocket, this adjusting pressuring valve core (22) radial system is useful on the radial direction through hole (22a) that is communicated with gas outlet (215) and fuel gas inlet (214), and the end that adjusting pressuring valve core (22) stretches into control chamber is shaped with outer tooth bar (221), described piston (23) is shaped with the bar tooth (231) that is meshed with this outer tooth bar (221), and outer tooth bar (221) the drive adjusting pressuring valve core (22) that bar tooth (231) engagement of described piston (23) promotes adjusting pressuring valve core (22) rotates the automatic adjusting that the gas supply amount is realized at the phase angle that changes radial direction through hole (22a).
7. bi-fuel internal combustion engine fuel oil according to claim 6, combustion gas control and converting system is characterized in that: described single cylinder gas control valve (5) is by the jogger hole (5a) that is shaped with on the air inlet push rod (51) of internal-combustion engine and the internal-combustion engine and be communicated with respectively jogger hole (5a) and push rod inlet hole (5b) and push rod air outlet hole (5c) that radial symmetric distributes form; Described air inlet push rod (51) is installed with the ram piston (52) that slides and be equipped with jogger hole (5a) hermetic seal, the side face of this ram piston (52) is shaped with the annular channel (52a) that is used for being communicated with together push rod inlet hole (5b) and push rod air outlet hole (5c), described ram piston (52) is driven by the control of the intake cam (8) of internal-combustion engine that air inlet push rod (51) is reciprocating realizes the conducting between push rod inlet hole (5b) and push rod air outlet hole (5c) or close that described intake manifold (31) is connected to push rod inlet hole (5b) end simultaneously.
8. bi-fuel internal combustion engine fuel oil according to claim 7, combustion gas control and converting system, it is characterized in that: described pilot line comprises control house steward (91) and control arm (92) and advances to arrange control valve (93), described control house steward's (91) outlet side is connected with the inlet hole (A) of fuel-firing gas-firing control valve (1), one end of described control arm (92) is connected with control house steward (91), the other end is connected to the epicoele suction port (211) of combustion gas automatic pressure regulator (2), and described two ends of advancing to arrange control valve (93) are connected with the air outlet (D) of fuel-firing gas-firing control valve (1) and the cavity of resorption porting (212) of combustion gas automatic pressure regulator (2) respectively.
9. bi-fuel internal combustion engine fuel oil according to claim 8, combustion gas control and converting system is characterized in that: described pilot line is the hydraulic control circuit take hydraulic pressure as power source.
10. bi-fuel internal combustion engine fuel oil according to claim 8, combustion gas control and converting system is characterized in that: described pilot line is the pneumatic pilot line take pressurized air as power source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205885667U CN202900425U (en) | 2012-11-09 | 2012-11-09 | Fuel oil and gas controlling and switching system of dual-fuel internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205885667U CN202900425U (en) | 2012-11-09 | 2012-11-09 | Fuel oil and gas controlling and switching system of dual-fuel internal combustion engine |
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| Publication Number | Publication Date |
|---|---|
| CN202900425U true CN202900425U (en) | 2013-04-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012205885667U Withdrawn - After Issue CN202900425U (en) | 2012-11-09 | 2012-11-09 | Fuel oil and gas controlling and switching system of dual-fuel internal combustion engine |
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| CN (1) | CN202900425U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102943713A (en) * | 2012-11-09 | 2013-02-27 | 宁波中策动力机电集团有限公司 | Fuel oil/gas control and switching system of dual-fuel internal combustion engine |
| CN104863717A (en) * | 2015-01-28 | 2015-08-26 | 北京华清燃气轮机与煤气化联合循环工程技术有限公司 | Control method for gas turbine fuel switching, and system thereof |
| CN107917236A (en) * | 2015-06-12 | 2018-04-17 | 李丽容 | A kind of fuel control unit of oil-gas two-way engine |
| CN110107411A (en) * | 2019-05-15 | 2019-08-09 | 吴家全 | A kind of oil gas conversion method, calculates equipment and automobile at device |
-
2012
- 2012-11-09 CN CN2012205885667U patent/CN202900425U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102943713A (en) * | 2012-11-09 | 2013-02-27 | 宁波中策动力机电集团有限公司 | Fuel oil/gas control and switching system of dual-fuel internal combustion engine |
| CN104863717A (en) * | 2015-01-28 | 2015-08-26 | 北京华清燃气轮机与煤气化联合循环工程技术有限公司 | Control method for gas turbine fuel switching, and system thereof |
| CN104863717B (en) * | 2015-01-28 | 2018-05-04 | 北京华清燃气轮机与煤气化联合循环工程技术有限公司 | Control method and system for gas turbine fuel switching |
| CN107917236A (en) * | 2015-06-12 | 2018-04-17 | 李丽容 | A kind of fuel control unit of oil-gas two-way engine |
| CN107940026A (en) * | 2015-06-12 | 2018-04-20 | 李丽容 | A kind of Fuel switching valve of oil-gas two-way engine |
| CN110107411A (en) * | 2019-05-15 | 2019-08-09 | 吴家全 | A kind of oil gas conversion method, calculates equipment and automobile at device |
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