CN1309235A - Carburetor - Google Patents
Carburetor Download PDFInfo
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- CN1309235A CN1309235A CN 00131815 CN00131815A CN1309235A CN 1309235 A CN1309235 A CN 1309235A CN 00131815 CN00131815 CN 00131815 CN 00131815 A CN00131815 A CN 00131815A CN 1309235 A CN1309235 A CN 1309235A
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Abstract
A carburetor for car is disclosed. It features that when the airflow sucked into aerating pipe changes, the membrane of vacuum booster drives needle valve to move for making the oil amount sprayed by oil-spray pipe vary relatively, so meeting the requirement of engine for the concentration of mixed gas in different working condition. Its advantages are simple structure, low cost and easy maintenance.
Description
Ideal carburetor of the present invention belongs to the used Carburetor of motor car engine.
At present, petrol engine adopts Carburetor to form inflammable mixture more, and all is with sucking atomizing that flowing of air stream realize gasoline and vaporization.The quantity of inflammable mixture is relevant with the gasoline flow with the air in entering mixed air vessel with concentration.The inflammable mixture that inlet manifold is delivered in evidence, elementary carburetor is that the increase with throttle opening is thickened by rare gradually.Represent that with excess air coefficient α and engine load n elementary carburetor provides the change procedure of inflammable mixture concentration to motor, can form elementary carburetor characteristic curve as shown in Figure 1.Yet actual situation is, when petrol engine is in the process that the scope internal loading of medium and small load progressively increases, requires Carburetor to supply with by dense thinning gradually inflammable mixture, and after petrol engine enters big load, and inflammable mixture transfers to again by rare and thickening.During to full load, supply can guarantee that motor sends the concentration of peak output.With motor requirement to inflammable mixture concentration under various operating modes, represent with excess air coefficient α and engine load n, can form ideal carburetor characteristic curve as shown in Figure 2.
Comparison diagram 1, two characteristic curves shown in Figure 2, as can be seen elementary carburetor can not satisfy motor under different operating modes to request of Mixed Gases Density.For power character, Economy and the emission performance that improves motor, modern Carburetor has developed into the quite complicated work system of structure.For example, Xie Yunli " the automobile engine fuel oil system structure and the maintenance " of writing (Guangdong science and technology publishing house publishes in August, 1994) introduced modern Carburetor and generally is provided with complicated main oil supply system, idling and idling slow speed system, starting system, acceleration system and enriching system etc.But along with the raising of Hyundai Motor performance, the rotating speed and the power of motor are progressively strengthened, and is more and more harsher to the Carburetor requirement, exposed its some shortcomings, and the defective that wherein has seriously has influence on the further raising of gasoline engine performance.For example,
Although 1 modern Carburetor has adopted various correcting devices and oil supply system, but still can not satisfy the various operating modes of motor to request of Mixed Gases Density, when motor its defective when high-performance develops more outstanding.
The most number average of 2 modern Carburetors changes mixture strength to change trunnion degree of vacuum, though this can reflect the essence of the various operating modes of motor, deals with the demand of stabilized (steady-state) speed.But under astable rotating speeds such as acceleration, deceleration, feedback information is insensitive.
3 modern Carburetors influence the distributing uniformity of multicylinder engine mixed gas, thereby the energy that each cylinder is obtained differs greatly, and influences the complete machine power character.
4 modern Carburetors are in order to guarantee the individual cylinder reliably working, or can run well under special operation conditions such as starting and idling in order to guarantee, are forced to use denseer mixed gas, thereby make the Economy reduction of motor.
In order to overcome these inherent defects of modern Carburetor, developed petrol engine spray-type fuel oil system.The spray-type fuel oil system compares with modern Carburetor, can provide the inflammable mixture that requires under different operating modes concentration to motor, promptly has the characteristic curve of the approaching ideal carburetor as shown in Figure 2 of comparison.But, spray-type fuel oil system architecture complexity, costing an arm and a leg, the maintaining of high technology level has limited being extensive use of of it.
Various correcting devices and oil supply system have been adopted although the objective of the invention is in order to overcome modern Carburetor, but still can not satisfy the shortcoming of the various operating modes of motor to the mixture strength requirement, providing a kind of can fully satisfy under the various operating modes of motor the mixture strength requirement, have that ideal carburetor is characteristic as shown in Figure 2, simple in structure, low price, maintaining are easy to ideal carburetor.
Ideal carburetor of the present invention includes oil supply system, gas tube, spray bar, needle-valve and vacuum booster, it is characterized in that: oil supply system includes fuel tank, oil pump and/or accumulator, gasoline filter, oil circuit pressure regulator and return tube etc.; Be provided with spray bar in the gas tube, needle-valve, closure, before closure, be provided with and introduce hole and transitional pore, and/or be provided with the heater of being convenient to gasoline atomizing, and/or be provided with steering flow and concentrate the guide plate flow through, behind closure, be provided with idle hole, idle hole and transitional pore are communicated with the introducing hole by suction tude, and/or suction tude is provided with the air inflow adjusting screw, and/or suction tude is provided with the idling cut-off electromagnetic valve, idle hole is provided with IACV (Idle Air Control Valve), IACV (Idle Air Control Valve) can satisfy motor and be in starting, air inlet during different operating mode such as warming up and idling requires: oil supply system can be to the stable fuel oil of spray bar incoming pressure, some nozzle openings are arranged on the spray bar, the needle-valve front end inserts spray bar slidably, and the slip of needle-valve is controlled by vacuum booster; Vacuum booster includes spring, diaphragm, needle-valve position regulator, protecgulum and bonnet etc., and needle-valve is connected and can moves with diaphragm on the diaphragm, and diaphragm and bonnet constitute vacuum chamber, and vacuum chamber is communicated with the introducing hole by vacuum tube; Set the design parameter of this Carburetor by test and calculating, make it work as that motor sucks the variation of fuel injection quantity on the caused spray bar of variation of air quantity when being in different operating mode in the gas tube and the mixed gas that forms satisfies the requirement of motor, that is to say, the design parameter of the Carburetor that sets, the characteristic curve that should satisfy this Carburetor meets the characteristic curve of ideal carburetor.
Air inlet requirement when making IACV (Idle Air Control Valve) satisfy different operating modes such as engine start, warming up and idling accurately and reliably, the present invention also proposes a kind of hot IACV (Idle Air Control Valve) simple in structure.Hot IACV (Idle Air Control Valve) includes valve body, heat responsive element and valve rod etc., it is characterized in that: valve housing is provided with the chuck that is communicated with engine cooling water, valve body is provided with valve rod low level regulator and high-order regulator, and the suction port of valve body is communicated with suction tude, the air outlet is communicated with idle hole; Can be bent downwardly after heat responsive element is heated, the one end is screwed on support, the other end is connected with valve rod and can drive valve rod and move, when moving, valve rod can change the air inflow of idle hole, air inlet requirement when the air inflow when valve rod is in a high position satisfies engine start, air inlet requirement when the air inflow when valve rod is in low level satisfies idling, valve rod are in the air inlet requirement that air inflow between the high low level satisfies the warming up process.
In order to improve the uniformity that multicylinder engine enters each cylinder mixed gas, ideal carburetor of the present invention can develop into the ideal carburetor of multi-cylinder injected fuel.For achieving this end, nozzle opening on the spray bar need only be divided between several region along axial direction, each interval respectively by the oil spout menifold be arranged on each cylinder air valve before oil sprayer be communicated with, the cracking pressure of oil sprayer is lower than the charge oil pressure in the spray bar, the size of the nozzle opening in each is interval, distribution density and all be identical along the position of axial direction; Spray bar one end still is communicated with oil supply system, the other end cooperates slidably with needle-valve in the insertion tube, and needle-valve is still controlled by vacuum booster; Spray bar, needle-valve and vacuum booster cooperation are installed in outside the gas tube.
For Economy and the emission performance that improves motor car engine, ideal carburetor of the present invention can develop into the ideal carburetor that uses combustion gas (comprising hydrogen, rock gas, liquefied petroleum gas (LPG), coal gas and biogas etc.).For achieving this end, oil supply system need only be changed into can be to the air supply system of the stable combustion gas of spray bar incoming pressure, and air supply system includes gas cylinder, air valve and/or preheater, high-pressure pressure-reducing valve, low-pressure relief valve, gas electromagnetic valve, pressure gauge and connecting line etc.; Simultaneously also should be according to the characteristics of combustion gas, adjust the design parameter of Carburetor, make it work as motor when being in different operating mode, suck the variation of the gas quantity that sprays on the caused spray bar of variation of air quantity in the gas tube and the mixture strength that forms satisfies the requirement of motor.
In order to take into account the advantage of gaseous fuel and liquid fuel, the ideal carburetor of a kind of dual-purpose combustion gas-gasoline (or diesel oil) dual-purpose fuel is proposed.For achieving this end, with the ideal carburetor of use gasoline of the present invention with use the ideal carburetor of combustion gas to be arranged on simultaneously on the gas tube, also need be provided with oil-gas change-over switch and firing time transducer etc.; The break-make of oil-gas change-over switch control gas electromagnetic valve and oil pump, decision motor be with the fuel gas operation or with the Fuel Petroleum operation, firing time different ignition advance angle when transducer converts two kinds of fuel to automatically by circuitry.Its also responsible circuitry converts following working state to: use fuel gas under operating modes such as engine start, warming up and idling, by combustion gas IACV (Idle Air Control Valve) control mixed gas; When vehicle starting post acceleration or load variations, use Fuel Petroleum, by closure control mixed gas.
In order to take into account the advantage of gaseous fuel and compression ignition diesel engine, the present invention also proposes a kind of compression-ignited diesel oil-combustion gas dual-fuel ideal carburetor.For achieving this end, need the ideal carburetor of use combustion gas of the present invention is arranged on the gas tube of compression ignition diesel engine, in gas tube, be provided with and control the closure of throttle linkage, also be provided with oil-gas change-over switch and diesel oil amount snubber; When oil-gas change-over switch pulled out " double fuel " gear, gas electromagnetic valve conducting air feed, diesel oil amount snubber made only a small amount of diesel oil of supply engine " oil mass of igniting " of high pressure oil pump, make engine operation under the double fuel state that with the combustion gas is main fuel; When oil-gas change-over switch pulled out " diesel oil " gear, gas electromagnetic valve disconnected and stops air feed, and diesel oil amount snubber has recovered the fuel feeding of high pressure oil pump to the normal diesel oil working state of motor.
In order to take into account the advantage of compression ignition diesel engine and gaseous fuel, simplied system structure, the present invention also proposes a kind of gaseous fuel ideal carburetor of compression ignite diesel oil.For achieving this end, the ideal carburetor of use combustion gas of the present invention need only be arranged on the gas tube of compression ignition diesel engine, simultaneously the diesel oil supply is restricted to a small amount of diesel oil of " oil mass of igniting ", make motor always work in compression ignite diesel oil ignited be the working state of main fuel with the combustion gas.
In order to take into account the advantage of compression ignition diesel engine and Fuel Petroleum, simplied system structure, the present invention also proposes a kind of Fuel Petroleum ideal carburetor of compression ignite diesel oil.For achieving this end, the ideal carburetor of use gasoline of the present invention need only be arranged on the gas tube of compression ignition diesel engine, simultaneously the diesel oil supply is restricted to a small amount of diesel oil of " oil mass of igniting ", make motor always work in compression ignite diesel oil ignited be the working state of main fuel with gasoline.
In order to bring into play the advantage of gasoline and compression ignition diesel engine, realize the lean combustion of high compression ratio, improve engine performance, and simplify ignition structure, the present invention proposes a kind of ideal carburetor of compression-ignited diesel oil-gasoline double-fuel.The approach that realizes this invention can specifically describe and be: the ideal carburetor of use gasoline of the present invention is arranged on the gas tube of compression ignition diesel engine, in gas tube, be provided with and control the closure of throttle linkage, also be provided with throw over switch and diesel oil amount snubber; When throw over switch pulled out " double fuel " gear, oil pump conducting gasoline feed, diesel oil amount snubber made only a small amount of diesel oil of supply engine " oil mass of igniting " of high pressure oil pump, make engine operation under the double fuel state that with gasoline is main fuel; When throw over switch pulled out " diesel oil " gear, oil pump disconnected and stops gasoline feed, and diesel oil amount snubber has recovered the fuel feeding of high pressure oil pump to the normal diesel oil working state of motor.
In order to bring into play combustion gas, gasoline and compression ignition diesel engine advantage separately, the present invention also proposes the ideal carburetor of a kind of compression-ignited diesel oil-gasoline-combustion gas three usefulness fuel.For achieving this end, the ideal carburetor of combustion gas-gasoline dual-purpose fuel of the present invention is arranged on the gas tube of compression ignition diesel engine, in gas tube, be provided with the closure with diesel oil control throttle linkage, also be provided with throw over switch and diesel oil amount snubber; When throw over switch pulls out " diesel oil combustion gas " retaining, gas electromagnetic valve conducting air feed, oil pump disconnect not gasoline feed, diesel oil amount snubber makes only a small amount of diesel oil of supply engine " oil mass of igniting " of high pressure oil pump, makes engine operation under the double fuel state that with the combustion gas is main fuel; When throw over switch pulls out " diesel oil and gasoline " retaining, gas electromagnetic valve disconnects and stops air feed, oil pump conducting gasoline feed, diesel oil amount snubber make still a small amount of diesel oil of supply engine " oil mass of igniting " of high pressure oil pump, make engine operation under the double fuel state that with gasoline is main fuel; When throw over switch pulled out " diesel oil " retaining, gas electromagnetic valve and oil pump all disconnected, and diesel oil amount snubber restores simultaneously, has recovered the fuel feeding of high pressure oil pump to the normal diesel oil working state of motor.
Ideal carburetor of the present invention except that can be used for motor car engine, also can be used for the motor that motorcycle, tractor, aircraft, steamer and other occasion are used.
For ideal carburetor of the present invention, by calculating or the relevant design parameter of test setting, for example suitably set charge oil pressure, diaphragm area, spring tension, needle-valve initial position, the latus rectum of spray bar, the size and the density profile of nozzle opening for gaseous-pressure, vacuum booster, and introduce hole, vacuum tube, transitional pore, the size of suction tude, idle hole etc. and mutual alignment thereof, just can make the characteristic curve of this Carburetor meet the characteristic curve of ideal carburetor, thus its relatively the Carburetor of prior art have following advantage:
It can supply engine different rotating speeds and load condition under the inflammable mixture of required variable concentrations and quantity, help improving power character, Economy and the emission performance of motor.
2. it adopts vacuum booster to drive the unlatching quantity of noticeable degree nozzle opening, and fuel oil is in pressure state in spray bar, so respective change takes place in fuel injection quantity immediately when amount of air drawn changes in the gas tube, help eliminating the exhaust contaminant that is produced when slowing down, save gasoline; Satisfy mixture strength requirement when quickening simultaneously, the acceleration mechanism and the enriching mechanism that have saved modern Carburetor with full load.
3. it adopts starting, warming up and the idling of IACV (Idle Air Control Valve) control motor, has saved modern Carburetor and has been used for the chock plate of engine start and warming up and a cover mechanism of open and close thereof, is convenient to manufacturing, mounting, commissioning and maintenance.
4. it can develop into the ideal carburetor of multi-cylinder injected fuel, guarantee that mixed gas enters each cylinder equably, this just makes it have the major advantage of electronically controlled fuel injection system, and also possesses simple in structure, low price, maintaining and maintenance simultaneously and be easy to advantage.
5. it can develop at an easy rate and use diesel oil combustion gas, dual-purpose combustion gas-gasoline dual-purpose fuel, compression-ignited-combustion gas dual-fuel, compression-ignited diesel oil-gasoline double-fuel and ideal carburetors compression-ignited diesel oil-gasoline-combustion gas three usefulness fuel, and this power character, Economy and emission performance for the raising motor provides new approach.
The present invention is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is the characteristic curve of elementary carburetor.α represents excess air coefficient among the figure, and n represents engine load.
Fig. 2 is the characteristic curve of ideal carburetor.α represents excess air coefficient among the figure, and n represents engine load.
Fig. 3 is an ideal carburetor structural representation of the present invention.
Fig. 4 is a hot IACV (Idle Air Control Valve) structural representation of the present invention.
Fig. 5 is the local enlarged diagram of spray bar of the ideal carburetor of multi-cylinder injected fuel of the present invention.
Fig. 6 is the ideal carburetor structural representation of use combustion gas of the present invention.
Fig. 7 is the ideal carburetor structural representation of dual-purpose combustion gas-gasoline dual-purpose fuel of the present invention.
Fig. 8 is compression-ignited diesel oil of the present invention-combustion gas dual-fuel ideal carburetor structural representation.
Fig. 9 is the ideal carburetor structural representation of compression-ignited diesel oil-gasoline double-fuel of the present invention.
Figure 10 is the ideal carburetor structural representation of compression-ignited diesel oil-gasoline of the present invention-combustion gas three usefulness fuel.
In Fig. 3, Fig. 6, Fig. 7, Fig. 8, Fig. 9 and Figure 10, include fuel tank 1, oil pump 2, accumulator 3, gasoline filter 4, return tube 5, oil circuit pressure regulator 6, gas tube 7, spray bar 8, airflow direction 9, spring 10, protecgulum 11, diaphragm 12, needle-valve position regulator 13, bonnet 14, vacuum tube 15, suction tude 16, air inflow adjusting screw 17, idling cut-off electromagnetic valve 18, IACV (Idle Air Control Valve) 19, idle hole 20, closure 21, transitional pore 22, guide plate 23, introduce hole 24 and needle-valve 25 etc.
Fig. 3 represents ideal carburetor structural representation of the present invention, and the front end of gas tube 7 is connected with air-strainer, the rear end is connected with engine suction manifold.When its work, in the oil supply system oil pump 2 with the gasoline sucking-off in the fuel tank 1, through accumulator 3 absorb and eliminated pressure surge, after gasoline filter 4 filters to the stable gasoline of spray bar 8 incoming pressures, oil circuit pressure regulator 6 is used to set the pressure of oil supply system, and unnecessary gasoline flows back to fuel tank through return tube 5; The negative pressure that produces when the motor inhaled air flows through in gas tube 7 acts on diaphragm 12 by vacuum tube 15, making diaphragm drive needle-valve 25 outwards moves, exposed the part nozzle opening on the spray bar 8, spray from nozzle opening so have the gasoline of certain pressure, form inflammable mixture with the air that enters; Closure 21 is closed or crack when engine start, warming up and idling, and mixed gas enters suction tude 16 from introducing hole 24 and transitional pore 22, enters engine suction manifold from idle hole 20 then; When travel behind the vehicle starting, when acceleration or varying loading by pilot control closure 21 apertures, make mixed gas mainly pass closure 21 and enter engine suction manifold from gas tube 7.The design parameter of this Carburetor is by test and calculate and to set, when it can satisfy Under Different Work Condition of Engine to the requirement of mixture strength and quantity; Oil circuit pressure regulator 6, needle- valve position regulator 13 and 17 pairs of inflammable mixtures of air inflow adjusting screw be formed with certain additional regulating action.
Fig. 4 is a hot IACV (Idle Air Control Valve) structural representation of the present invention, and valve housing is provided with the chuck, the valve body 41 that are communicated with engine cooling water and is installed in gas tube 7 outsides, and its suction port 42 is communicated with suction tude 16, air outlet 47 is communicated with idle hole 20.One end of heat responsive element 43 is screwed on support, the other end is connected with valve rod 44 and can drive valve rod moves, and high-order regulator 45 limits the stroke that valve rods 44 move with low level regulator 46.Engine water temperature is lower during starting cold, and heat responsive element 43 makes valve rod 44 be in a high position; After the engine start, coolant water temperature raises gradually, is bent downwardly and drives valve rod after heat responsive element 43 is heated and move to low level; When coolant water temperature had reached the temperature of setting, heat responsive element promptly drove valve rod 44 and shifts to low level, had finished motor from the process of starting, warming up changes idling then automatically over to.Air inflow when valve rod low level regulator 46 can be adjusted idling, the adjustment of realization idling speed; Inlet gas concentration when the high-order regulator 45 of valve rod can be adjusted starting cold is to guarantee finishing smoothly of when the Various Seasonal of different regions engine cold car starting process.
Fig. 5 is the local enlarged diagram of spray bar of the ideal carburetor of multi-cylinder injected fuel of the present invention, nozzle opening among the figure on the spray bar 8 axially is divided into several intervals 53 uniformly, each interval 53 is communicated with oil sprayer 51 by oil spout menifold 52 respectively, before oil sprayer 51 is arranged on the air valve of each cylinder, the needle-valve 25 that the H of spray bar 8 end is communicated with oil supply system, the other end and insertion tube are interior cooperates slidably, and the spray bar 8 of Xing Chenging, needle-valve 25 and vacuum booster cooperation are installed in gas tube 7 outsides like this.
Fig. 6 represents the ideal carburetor of use combustion gas of the present invention, it can be changed into oil supply system by the ideal carburetor that uses gasoline as shown in Figure 3 can be to the air supply system of the stable combustion gas of spray bar 8 incoming pressures and form, and air supply system includes gas cylinder 31, pressure gauge 32, air valve 33, preheater 34, high-pressure pressure-reducing valve 35, gas electromagnetic valve 36, low-pressure relief valve 37, connecting line etc.
Fig. 7 is the ideal carburetor structural representation of dual-purpose combustion gas-gasoline dual-purpose fuel of the present invention, it is that ideal carburetor by the ideal carburetor of use gasoline shown in Figure 3 and use combustion gas shown in Figure 6 is arranged on simultaneously on the gas tube 7 and forms, it also be provided with oil-gas change-over switch 72 and firing time transducer 73.The break-make of oil-gas change-over switch 72 control gas electromagnetic valves 36 and oil pump 2, decision motor are operating fuel with gasoline or combustion gas, firing time different ignition advance angle when transducer 73 converts two kinds of fuel to automatically by circuitry.Regulating action can all take place to the air inlet of using combustion gas or fuel oil in the aperture of control node valve 21; And the adjusting of air inflow is that IACV (Idle Air Control Valve) 19 during respectively by combustion gas or fuel oil is controlled when engine start, warming up and idling.
Fig. 8 is compression-ignited diesel oil of the present invention-combustion gas dual-fuel ideal carburetor structural representation, it is that ideal carburetor with use combustion gas shown in Figure 6 is arranged on the gas tube 7 of compression ignition diesel engine and forms, closure 21 and control throttle 81 interlocks also are provided with oil-gas change-over switch 82 and diesel oil amount snubber 83.When engine operation during at the diesel oil state, gas electromagnetic valve 36 disconnects not air feed, the diesel oil amount by with control throttle 81 controls of closure 21 interlocks; When engine operation based on the double fuel state of combustion gas the time, gas electromagnetic valve 36 conducting air feed, diesel oil amount snubber 83 makes only a small amount of diesel oil of supply engine " oil mass of igniting " of high pressure oil pump, the fuel gas mixture inspiration cylinder of air that enters from gas tube 7 and spray bar 8 ejections is lighted work done by the diesel oil of compression ignite, and the mixed gas quantity that sucks cylinder is by closure 21 controls.
The ideal carburetor of use combustion gas shown in Figure 6 is arranged on the gas tube of compression ignition diesel engine, simultaneously the diesel oil supply is restricted to a small amount of diesel oil of " oil mass of igniting ", the gaseous fuel ideal carburetor of the compression ignite diesel oil of Xing Chenging like this, just can always work in compression ignite diesel oil ignited be the working state of main fuel with the combustion gas.
The ideal carburetor of use gasoline shown in Figure 3 is arranged on the gas tube of compression ignition diesel engine, simultaneously the diesel oil supply is restricted to a small amount of diesel oil of " oil mass of igniting ", the Fuel Petroleum ideal carburetor of the compression ignite diesel oil of Xing Chenging like this, just can always work in compression ignite diesel oil ignited be the working state of main fuel with gasoline.
Fig. 9 is the ideal carburetor structural representation of compression-ignited diesel oil-gasoline double-fuel of the present invention, it is that ideal carburetor with as shown in Figure 3 use gasoline is arranged on the gas tube 7 of compression-ignited diesel engine and forms, closure 21 and control throttle 91 interlocks also are provided with oil-gas change-over switch 92 and diesel oil amount snubber 93.When engine operation during at the diesel oil state, oil pump 2 disconnects not gasoline feed, and the diesel oil amount is by control throttle 91 controls of closure 21 interlocks; When engine operation based on the double fuel state of gasoline the time, oil pump 2 conducting gasoline feeds, diesel oil amount snubber 93 makes only a small amount of diesel oil of supply engine " oil mass of igniting " of high pressure oil pump, the gasoline mixture inspiration cylinder of air that enters from gas tube 7 and spray bar 8 ejections is lighted work done by the diesel oil of compression ignite, and the mixed gas quantity that sucks cylinder is by closure 21 controls.
Figure 10 is the ideal carburetor structural representation of compression-ignited diesel oil-gasoline of the present invention-combustion gas three usefulness fuel, it is that ideal carburetor with as shown in Figure 7 dual-purpose combustion gas-gasoline dual-purpose fuel is arranged on the gas tube 7 of compression-ignited diesel engine and forms, closure 21 and control throttle 101 interlocks also are provided with oil-gas change-over switch 102 and diesel oil amount snubber 103.When engine operation during at the diesel oil state, gas electromagnetic valve 36 disconnects not air feed, and oil pump 2 also disconnects not air feed, the diesel oil amount by with control throttle 101 controls of closure 21 interlocks.When engine operation based on the double fuel state of combustion gas the time, gas electromagnetic valve 36 conducting air feed, oil pump 2 disconnects not gasoline feed; When engine operation based on the double fuel state of gasoline the time, gas electromagnetic valve 36 disconnects not air feed, oil pump 2 conducting gasoline feeds; At this moment, diesel oil amount snubber 103 makes only a small amount of diesel oil of supply engine " oil mass of igniting " of high pressure oil pump, the combustion gas or the gasoline mixture inspiration cylinder of air that enters from gas tube 7 and spray bar 8 ejections are lighted work done by the diesel oil of compression ignite, and the mixed gas quantity that sucks cylinder is by closure 21 controls.
Claims (10)
1. ideal carburetor, include oil supply system, gas tube, spray bar, needle-valve and vacuum booster, it is characterized in that: oil supply system includes fuel tank [1], oil pump [2] and/or accumulator [3], gasoline filter [4], oil circuit pressure regulator [6] and return tube [5] etc.; Be provided with spray bar [8] in the gas tube [7], needle-valve [25], closure [21], before closure, be provided with and introduce hole [24] and transitional pore [22], and/or be provided with the heater of being convenient to gasoline atomizing, and/or be provided with steering flow and concentrate the guide plate [23] flow through, behind closure, be provided with idle hole [20], idle hole and transitional pore are communicated with introducing hole [24] by suction tude [16], and/or suction tude [16] is provided with air inflow adjusting screw [17], and/or suction tude is provided with idling cut-off electromagnetic valve [18], idle hole is provided with IACV (Idle Air Control Valve) [19], IACV (Idle Air Control Valve) can satisfy motor and be in starting, air inlet during different operating mode such as warming up and idling requires: oil supply system can be to the stable fuel oil of spray bar [8] incoming pressure, some nozzle openings are arranged on the spray bar, needle-valve [25] front end inserts spray bar [8] slidably, and the slip of needle-valve is controlled by vacuum booster; Vacuum booster includes spring [10], diaphragm [12], needle-valve position regulator [13], protecgulum [11] and bonnet [14] etc., needle-valve is connected on the diaphragm and can moves with diaphragm, diaphragm and bonnet constitute vacuum chamber, and vacuum chamber is communicated with the introducing hole by vacuum tube [15]; Set the design parameter of this Carburetor by test and calculating, make it work as that motor sucks air quantity when being in different operating mode in the gas tube [7] the caused spray bar of variation [8] is gone up the variation of fuel injection quantity and the mixed gas that forms satisfies the requirement of motor, that is to say, the design parameter of the Carburetor that sets, the characteristic curve that should satisfy this Carburetor meets the characteristic curve of ideal carburetor.
2. ideal carburetor as claimed in claim 1, IACV (Idle Air Control Valve) [19] adopts the hot IACV (Idle Air Control Valve) that includes valve body, heat responsive element and valve rod, it is characterized in that: valve housing is provided with the chuck that is communicated with engine cooling water, valve body [41] is provided with valve rod low level regulator [46] and high-order regulator [45], and the suction port of valve body [42] is communicated with suction tude [16], air outlet [47] are communicated with idle hole [20]; Can be bent downwardly after heat responsive element [43] is heated, the one end is screwed on support, the other end is connected with valve rod [44] and can drive valve rod and move, when moving, valve rod can change the air inflow of idle hole [20], air inlet requirement when the air inflow when valve rod is in a high position satisfies engine start, air inlet requirement when the air inflow when valve rod is in low level satisfies idling, valve rod are in the air inlet requirement that air inflow between the high low level satisfies the warming up process.
3. ideal carburetor as claimed in claim 1 develops into the ideal carburetor of multi-cylinder injected fuel, it is characterized in that the nozzle opening on the spray bar [8] is divided into [53] between several region along axial direction, each interval is communicated with by oil spout menifold [52] oil sprayer [51] preceding with being arranged on each cylinder air valve respectively, the cracking pressure of oil sprayer is lower than the charge oil pressure in the spray bar, the size of the nozzle opening in each is interval, distribution density and all be identical along the position of axial direction; Spray bar [8] one ends still are communicated with oil supply system, the other end cooperates slidably with needle-valve [25] in the insertion tube, and needle-valve is still controlled by vacuum booster; Spray bar, needle-valve and vacuum booster cooperation are installed in outside the gas tube [7].
4. one kind is used combustion gas (to comprise hydrogen, natural gas, liquefied petroleum gas (LPG), coal gas and biogas etc.) ideal carburetor, it is characterized in that oil supply system with the described ideal carburetor of claim 1 changes into can be to the air supply system of the stable combustion gas of spray bar [8] incoming pressure, and air supply system includes gas cylinder [31], air valve [33] and/or preheater [34], high-pressure pressure-reducing valve [35], low-pressure relief valve [37], gas electromagnetic valve [36], pressure gauge [32] and connecting line etc.; Simultaneously also should be according to the characteristics of combustion gas, adjust the design parameter of Carburetor, make it work as motor when being in different operating mode, suck the variation of the gas quantity that sprays on the caused spray bar of variation of air quantity in the gas tube and the mixture strength that forms satisfies the requirement of motor.
5. dual-purpose combustion gas--the ideal carburetor of gasoline (or diesel oil) dual-purpose fuel, it is characterized in that the ideal carburetor of the described use gasoline of claim 1 and the ideal carburetor of the described use combustion gas of claim 4 are arranged on the gas tube [7] simultaneously, oil-gas change-over switch [72] and transducer firing time [73] etc. also need be set; The break-make of oil-gas change-over switch control gas electromagnetic valve [36] and oil pump [2], decision motor move with the fuel gas operation or with Fuel Petroleum, different ignition advance angle when transducer firing time [73] converts two kinds of fuel to automatically by circuitry.
6. compression-ignited diesel oil-combustion gas dual-fuel ideal carburetor, it is characterized in that the ideal carburetor of the described use combustion gas of claim 4 is arranged on the gas tube [7] of compression ignition diesel engine, in gas tube, be provided with and control the closure [21] of throttle [81] interlock, also be provided with oil-gas change-over switch [82] and diesel oil amount snubber [83]; When oil-gas change-over switch [82] pulls out " double fuel " gear, gas electromagnetic valve [36] conducting air feed, diesel oil amount snubber makes only a small amount of diesel oil of supply engine " oil mass of igniting " of high pressure oil pump, makes engine operation under the double fuel state that with the combustion gas is main fuel; When oil-gas change-over switch [82] pulled out " diesel oil " gear, gas electromagnetic valve [36] disconnected and stops air feed, and diesel oil amount snubber [83] has recovered the fuel feeding of high pressure oil pump to the normal diesel oil working state of motor.
7. the gaseous fuel ideal carburetor of a compression ignite diesel oil, it is characterized in that the ideal carburetor of the described use combustion gas of claim 4 is arranged on the gas tube of compression ignition diesel engine, simultaneously the diesel oil supply is restricted to a small amount of diesel oil of " oil mass of igniting ", make motor always work in compression ignite diesel oil ignited be the working state of main fuel with the combustion gas.
8. the Fuel Petroleum ideal carburetor of a compression ignite diesel oil, it is characterized in that the ideal carburetor of the described use gasoline of claim 1 is arranged on the gas tube of compression ignition diesel engine, simultaneously the diesel oil supply is restricted to a small amount of diesel oil of " oil mass of igniting ", make motor always work in compression ignite diesel oil ignited be the working state of main fuel with gasoline.
9. the ideal carburetor of a compression-ignited diesel oil-gasoline double-fuel, it is characterized in that the ideal carburetor of the described use gasoline of claim 1 is arranged on the gas tube [7] of compression ignition diesel engine, in gas tube, be provided with and control the closure [21] of throttle [91] interlock, also be provided with throw over switch [92] and diesel oil amount snubber [93]; When throw over switch pulled out " double fuel " gear, oil pump [2] conducting gasoline feed, diesel oil amount snubber made only a small amount of diesel oil of supply engine " oil mass of igniting " of high pressure oil pump, make engine operation under the double fuel state that with gasoline is main fuel; When throw over switch pulled out " diesel oil " gear, oil pump [2] disconnected and stops gasoline feed, and diesel oil amount snubber [93] has recovered the fuel feeding of high pressure oil pump to the normal diesel oil working state of motor.
10. the ideal carburetor of compression-ignited diesel oil-gasoline-combustion gas three usefulness fuel, it is characterized in that the ideal carburetor with the described combustion gas-gasoline dual-purpose fuel of claim 5 is arranged on the gas tube of compression ignition diesel engine [7], in gas tube, be provided with the closure [21] that links with diesel oil control throttle [101], also be provided with throw over switch [102] and diesel oil amount snubber [103]; When throw over switch pulls out " diesel oil combustion gas " retaining, gas electromagnetic valve [36] conducting air feed, oil pump [2] disconnect not gasoline feed, diesel oil amount snubber [103] makes only a small amount of diesel oil of supply engine " oil mass of igniting " of high pressure oil pump, makes engine operation under the double fuel state that with the combustion gas is main fuel; When throw over switch pulls out " diesel oil and gasoline " retaining, gas electromagnetic valve [36] disconnects and stops air feed, oil pump conducting gasoline feed, diesel oil amount snubber make still a small amount of diesel oil of supply engine " oil mass of igniting " of high pressure oil pump, make engine operation under the double fuel state that with gasoline is main fuel; When throw over switch [102] pulled out " diesel oil " retaining, gas electromagnetic valve [36] and oil pump [2] all disconnected, and diesel oil amount snubber [103] restores simultaneously, has recovered the fuel feeding of high pressure oil pump to the normal diesel oil working state of motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00131815 CN1309235A (en) | 2000-10-18 | 2000-10-18 | Carburetor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00131815 CN1309235A (en) | 2000-10-18 | 2000-10-18 | Carburetor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1309235A true CN1309235A (en) | 2001-08-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00131815 Pending CN1309235A (en) | 2000-10-18 | 2000-10-18 | Carburetor |
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| Country | Link |
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| CN (1) | CN1309235A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100389028C (en) * | 2004-01-08 | 2008-05-21 | 于魁江 | Vehicle reforming technology |
| CN101495745B (en) * | 2006-08-01 | 2011-07-20 | 本田技研工业株式会社 | Automatic residual fuel vent device for carburetor |
| CN102359421A (en) * | 2011-09-27 | 2012-02-22 | 庄景阳 | Fuel prudent device for electrically controlling on-off of atmosphere balance hole of carburetor |
| CN101725405B (en) * | 2008-10-10 | 2012-07-04 | 富世华智诺株式会社 | Two-stroke engine |
| CN102767450A (en) * | 2012-07-15 | 2012-11-07 | 福鼎市佳磐通用部件有限公司 | Low-speed system for dual-fuel outboard engine fuel supply device |
| CN106709165A (en) * | 2016-12-07 | 2017-05-24 | 重庆长安汽车股份有限公司 | Design method for low-noise high-pressure fuel system |
| CN109966619A (en) * | 2019-04-24 | 2019-07-05 | 王网金 | A kind of device of control oxygen output concentration |
| CN112377335A (en) * | 2020-11-10 | 2021-02-19 | 吴厥豪 | Flat-suction type automobile carburetor capable of being uniformly mixed |
-
2000
- 2000-10-18 CN CN 00131815 patent/CN1309235A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100389028C (en) * | 2004-01-08 | 2008-05-21 | 于魁江 | Vehicle reforming technology |
| CN101495745B (en) * | 2006-08-01 | 2011-07-20 | 本田技研工业株式会社 | Automatic residual fuel vent device for carburetor |
| CN101725405B (en) * | 2008-10-10 | 2012-07-04 | 富世华智诺株式会社 | Two-stroke engine |
| CN102359421A (en) * | 2011-09-27 | 2012-02-22 | 庄景阳 | Fuel prudent device for electrically controlling on-off of atmosphere balance hole of carburetor |
| CN102767450A (en) * | 2012-07-15 | 2012-11-07 | 福鼎市佳磐通用部件有限公司 | Low-speed system for dual-fuel outboard engine fuel supply device |
| CN106709165A (en) * | 2016-12-07 | 2017-05-24 | 重庆长安汽车股份有限公司 | Design method for low-noise high-pressure fuel system |
| CN106709165B (en) * | 2016-12-07 | 2020-07-10 | 重庆长安汽车股份有限公司 | Design method of low-noise high-pressure fuel system |
| CN109966619A (en) * | 2019-04-24 | 2019-07-05 | 王网金 | A kind of device of control oxygen output concentration |
| CN112377335A (en) * | 2020-11-10 | 2021-02-19 | 吴厥豪 | Flat-suction type automobile carburetor capable of being uniformly mixed |
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