CN102619655A - Throat-type inlet manifold of electrical control fuel jet-type internal combustion engine - Google Patents
Throat-type inlet manifold of electrical control fuel jet-type internal combustion engine Download PDFInfo
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- CN102619655A CN102619655A CN2012100018665A CN201210001866A CN102619655A CN 102619655 A CN102619655 A CN 102619655A CN 2012100018665 A CN2012100018665 A CN 2012100018665A CN 201210001866 A CN201210001866 A CN 201210001866A CN 102619655 A CN102619655 A CN 102619655A
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Abstract
The invention relates to a throat-type inlet manifold of an electrical control fuel jet-type internal combustion engine, which comprises an inlet manifold body, wherein a plurality of channels communicated with a combustion chamber of the engine are arranged on the body, injection nozzles and one or a plurality of throats are arranged in the channels, the throats are provided with flow-guiding holes, the flow-guiding holes are arranged along the air inlet direction, and front outlets of the flow-guiding holes are close to the injection orifices of the injection nozzles. The high speed airflow of the throats enables the oil mist of the injection nozzles to be subjected to secondary atomization, and mixing efficiency of fuel and air is improved significantly, so that performance of the engine is enhanced, fuel is saved, harmful gas emission of the engine is lowered, and starting and acceleration performance of cars and ships using the internal combustion engine as power can be improved and fuel consumption thereof can be reduced without changing the working capacity of cylinders. The throats are arranged in the channels of the inlet manifold, so that outer space of the engine is not occupied, and capacity of the cylinders is not changed.
Description
Technical field
The present invention relates to car, marine engine technical field, especially relate to a kind of electronic fuel injection formula internal-combustion engine hollow throat type intake manifold.
Background technique
Come out so far from internal-combustion engine; People were having a lot of improvement aspect its fuel delivery; From Carburetor to the single-point electronic fuel injection, technology such as multiple spot electronic fuel injection, in-cylinder direct injection come out one by one, this gives and practice thrift fuel oil, reduce toxic emission provides reliable assurance.
Conventional fuel injection system is suitable for monitoring the fuel quantity that is fed in motor or its cylinder usually, makes the fuel that has expectation in the cylinder through time point and the time length of controlling each injection; Conventional ejector system is not designed to the fuel and the Air mixing at the cylinder upper reaches are optimized usually; For this reason; There is the inventor to propose the optimisation technique of " induction regulator block " (publication number CN 101356359A) by name; This manifold blocks is arranged between the intake manifold and cylinder head of motor, and this manifold blocks comprises having the material block that at least one passes through manifold passage wherein; This manifold passage has input end and output terminal, and wherein, input end is connected to intake manifold, and output terminal is connected to cylinder; This manifold passage comprises at least one injector head channel, and at least one injector head channel is towards the input end of this manifold passage location and be suitable for holding fuel injector; This manifold blocks also can comprise one or more induction regulator, is used for improving the mixing efficiency of the fuel-air of manifold passage.This public technology; Though can improve the mixing efficiency of the fuel-air in the manifold passage to a certain extent; Improved the performance of motor; And reduce oil consumption, reduced discharge of harmful gases, but between intake manifold and cylinder head, to set up manifold blocks, establish the structure of induction regulator in the manifold blocks, complex structure, cost is higher, the overall structure volume increases and need bigger usage space; And optimize the mode of mixing efficiency through prolonging fuel and Air mixing passage, the time that the mixing efficiency increase rate is limited, not only increased incorporation time but also prolonged mixed gas entering firing chamber.
Summary of the invention
Main purpose of the present invention provide a kind of simple in structure, cost is low, do not take the external engine space, and have higher fuel and air mixing efficient and the engine performance that improves, practice thrift fuel oil, reduce the electronic fuel injection formula internal-combustion engine hollow throat type intake manifold of motor noxious gas emission.
Above-mentioned technical problem of the present invention mainly is able to solve through following technical proposals: electronic fuel injection formula internal-combustion engine hollow throat type intake manifold; The body that comprises intake manifold; This body is provided with several passages that is communicated with engine chamber, is provided with oil nozzle in the passage, it is characterized in that: also be provided with one or more trunnions in the described passage; This trunnion has pod apertures, and pod apertures is along airintake direction setting and its front end exit jetburner near oil nozzle.
When needing motor to send when more high-power (being higher than idling) because the unlatching of closure; Air-flow in the engine intake manifold increases; Flow velocity is accelerated; When airflow passes is installed in the trunnion at oil nozzle place; Because of the internal diameter of trunnion makes through the air-flow velocity in the trunnion faster than the air-flow velocity in the intake manifold less than the internal diameter of intake manifold, the quick air-flow through trunnion is in the front end ejection of trunnion, and the high velocity air of ejection (for the air-flow velocity in the intake manifold) acts on the mist of oil of oil nozzle ejection; The mist of oil of oil nozzle ejection dispel make it and flow through near air mixing more even sooner, and can to make the oil droplet of fuel particles secondary-atomizing Cheng Gengxiao atomization badness, bigger of oil nozzle ejection be the inflammable mixture that motor provides better quality.
Another effect from the high velocity air of trunnion front end ejection can make atomized fuel get into speeding up of cylinder exactly: when air-flow when the trunnion front end sprays at a high speed because of action of high-speed airflow on mist of oil; Just obtained a thrust with respect to mist of oil; Mist of oil has obtained an acceleration under the effect of this thrust like this, makes fuel oil get into the firing chamber quickly.
As preferably, said trunnion by with internal diameter from small to large successively the sub-trunnion of connected head-to-tail several tubuloses constitute, the gap in the extraneous gas intake channel is left in the junction of adjacent sub-trunnion; The endoporus entry end diameter of sub-trunnion is less than the outlet end diameter.The air communication later less sub-trunnion of face internal diameter gets into one of front than the diffusion of expanding of time in the sub-trunnion of large diameter; The air-flow that the sub-trunnion of vacuum suction that produces when expanding diffusion is outside is also got in the bigger sub-trunnion of front inner diameter by the space of two sub-trunnion junctions; The air-flow of flowing through this moment in the bigger sub-trunnion of front inner diameter is just a lot of than increase; More much bigger by the air-flow of sub-trunnion front end ejection like this than the current rate of entry end; The energy that dispels, promotes the mist of oil of oil nozzle ejection has also just strengthened a lot; The structure of a plurality of sub-trunnions can make mixed gas quality get into the combustion chambers burn acting better, faster, for motor discharges better performance better guarantee is provided.
The trunnion connecting part gets into the runner in the pipe as outside air; Improve the structure of trunnion connecting part; Can improve the efficient that outside air gets into, as preferably, for adjacent sub-trunnion; The sub-trunnion internal diameter of front end is greater than the sub-trunnion external diameter of rear end, and the sub-trunnion end of rear end is stretched in the sub-trunnion of front end.This structure, two cross-talk trunnion connecting parts have bigger negative pressure, make the outer space tolerance that gets in the sub-trunnion through the connecting part bigger.
Be further to improve the effect that sub-trunnion connecting part sucks outside air, as preferably, the front end of the sub-trunnion of front end is provided with outer conical surface, and the pore rear portion of the sub-trunnion of rear end is provided with internal conical surface.Between outer conical surface and internal conical surface, form an annular gap, the radial cross section of annular gap is inner small and outside big enlarging shape, has both increased amount of air drawn, strengthens the flow velocity that sucks air again.
For the trunnion that is made up of sub-trunnion, the arrangement mode of sub-trunnion can influence the air quantity and the speed of last air-flow, and as preferably, the sub-trunnion on the said trunnion is arranged in a linear.This structure can guarantee higher fuel oil, air mixing efficient.
For not being the trunnion that sub-trunnion constitutes, the trunnion sidepiece is provided with the gap of some introducing outer gas streams, and the outlet end diameter of pod apertures 31 is greater than the entry end diameter.Principle as stated, through the sidepiece gap, the outside air-flow of body can get into pod apertures, can increase amount of air drawn, strengthens the flow velocity of ejection gas again.
As preferably, when trunnion when being a plurality of, a plurality of trunnions are fan-shaped array and are looped around around the oil nozzle.A plurality of trunnions of fan-shaped array from different perspectives simultaneously for oil nozzle provides high velocity air, make the effect of secondary-atomizing better.
For improving working life, as preferably, said trunnion is that the hard oil resisting material is made.At this moment, trunnion is fixed in the passage of intake manifold through the mode of installing.
As the replacement scheme of such scheme, said trunnion is and the structure of intake manifold with the material global formation.This structure can save the step that trunnion is assembled to intake manifold.
As preferably, when being provided with two or above oil nozzle in each passage, each in oil nozzle week side be equipped with trunnion.Can fully improve the atomizing effect of each nozzle.
In sum, the present invention has following beneficial effect.
1, the high velocity air of trunnion carries out secondary-atomizing to the mist of oil of oil nozzle; Significantly improve fuel and Air mixing efficient; Thereby improve engine performance, practice thrift fuel oil, reduce the motor noxious gas emission; Making with the internal-combustion engine is that car, the ship of power improves starting, acceleration performance under the situation that does not change cylinder capacity, reduces fuel consume.
2, trunnion is located in the passage of intake manifold, does not take the external engine space, does not also change cylinder volume.
3, the throat tubular construction of experimental process trunnion serial connection makes mixed gas quality get into the combustion chambers burn acting better, quickly, makes motor discharge better performance.
4, simple in structure, cost is low, be suitable for producing in enormous quantities.
Description of drawings
Accompanying drawing 1 is a kind of structural principle schematic representation of the present invention.
Accompanying drawing 2 is the interior trunnion of intake manifold passage and the structural principle schematic representation of oil nozzle.
Accompanying drawing 3 is a kind of throat tubular construction principle schematic.
Embodiment
Pass through embodiment below, and combine accompanying drawing, do further bright specifically technological scheme of the present invention.
Embodiment:
Electronic fuel injection formula internal-combustion engine hollow throat type intake manifold of the present invention; Shown in accompanying drawing 1, accompanying drawing 2, it comprises body 2, and this body 2 is provided with several passages 21,22,23,24 that is communicated with engine chamber; Be provided with oil nozzle 4 in the passage 21,22,23,24; Also be provided with one or more trunnions 3 in each passage, this trunnion 3 has pod apertures 39, and this pod apertures 31 is along airintake direction setting and its front end exit jetburner near oil nozzle 4.The cross section of pod apertures 31 can be rounded, oval or other shapes, and the outlet end diameter of pod apertures 31 is greater than the entry end diameter.
When trunnion 3 when being a plurality of, a plurality of trunnions 3 are fan-shaped array and are looped around around the oil nozzle 4.
Trunnion 3 is and the structure of intake manifold with the material global formation; Certainly, trunnion 3 also can be the absolute construction of independent making, and at this moment, it is made for the hard oil resisting material.
When being provided with two or above oil nozzle 4 in each passage 21,22,23,24, each oil nozzle 4 all side is equipped with trunnion 3.
Shown in accompanying drawing 3, trunnion 3 by with internal diameter from small to large successively the sub-trunnion 31,32,33 of connected head-to-tail several tubuloses constitute, the gap in the extraneous gas intake channel is left in the junction of adjacent sub-trunnion; The endoporus entry end diameter of sub-trunnion 31,32,33 is less than the outlet end diameter.For adjacent sub-trunnion, the sub-trunnion internal diameter of front end is greater than the sub-trunnion external diameter of rear end, and the sub-trunnion end of rear end is stretched in the sub-trunnion of front end.The front end of the sub-trunnion of front end is provided with outer conical surface, and the pore rear portion of the sub-trunnion of rear end is provided with internal conical surface.Echelon was arranged before and after sub-trunnion on the trunnion 3 was, and best mode is to be arranged in a straight line.
During use; Additional one or more internal diameters are less than the trunnion 3 of intake manifold on the basis that keeps former intake manifold internal structure; The additional oil nozzle 4 of trunnion 3 mounting points on intake manifold is near a side of air intake filter 1 and closure 5; The front end exit of trunnion 3 is as far as possible near the fuel jet of oil nozzle 4, not hinder fogging oil spray painting that oil nozzle 4 normal oil spouts, oil nozzle 4 spray less than being the best on the trunnion 3; The wall thickness of trunnion 3, internal diameter, quantity are decided according to the motor actual conditions.
For the ease of narration, term positions such as that this paper has adopted is forward and backward, front end, rear end; Among this paper, in the passage be near an end of engine chamber before, be in the other direction after.
Electronic fuel injection formula internal-combustion engine hollow throat type intake manifold of the present invention is another the energy-conserving and emission-cutting technology of under the overall situation of environmental protection and energy saving, inventing; It is applicable to that all spray the internal-combustion engine of fuel feeding outward with electric-controlled type fuel oil cylinder; Main feature is: under the situation that does not change cylinder volume; Improve engine performance, practice thrift fuel oil, reduce the motor noxious gas emission, can make with the internal-combustion engine is that car, the ship of power improves starting, acceleration performance, the minimizing fuel consume under the situation that does not change cylinder capacity; And be easy to making, low cost of manufacture, be suitable for manufacturing in enormous quantities, application.
Through test of many times, adopt the throat tubular construction that a plurality of sub-trunnions constitute after, the fuel consume of car load has reduced by 10%---25%.
Need to prove that know-why of the present invention is the air-flow through the gap inlet tube external on the trunnion, and quicken the air-flow in the pod apertures, the air quantity of increase pod apertures outlet end ejection; Wherein mainly be divided into two kinds of situations.
1, the throat tubular construction that constitutes for the experimental process trunnion is that each sub-trunnion can be the branch body structure through the air-flow of the gap inlet tube external between sub-trunnion, also can make or connect as one structure; When each sub-trunnion is structure as a whole, can between sub-trunnion, be provided with such as connecting plate, connection strap or other connection sets etc. and becomes one structure, can be the integrative-structure of one injection moulding or machine shaping.
2, for the trunnion of monomer structure (for the structure of experimental process trunnion), the gap of introducing outer gas stream can be the several holes of being located on the trunnion sidepiece tube wall, and this hole can be circular port, bar hole, elliptical aperture or the like shape.At this moment, the body outside can be the taper that front end is big, the rear end is little, so that the gap Way in of sidepiece is more near the flow direction of outer gas stream.
In practical application, no matter be unitary structure, still be by the composite structure of sub-trunnion; All there are some distortion in trunnion; But no matter which kind of simple displacement or conversion or localized variation under the situation of not taking off know-why of the present invention, still belong to protection scope of the present invention.
Claims (10)
1. electronic fuel injection formula internal-combustion engine hollow throat type intake manifold; Comprise body (2); This body (2) is provided with several passages (21,22,23,24) that is communicated with engine chamber; Passage is provided with oil nozzle (4) in (21,22,23,24); It is characterized in that: also be provided with one or more trunnions (3) in the described passage, this trunnion (3) has pod apertures (39), and this pod apertures (31) is along airintake direction setting and its front end exit jetburner near oil nozzle (4).
2. electronic fuel injection formula internal-combustion engine hollow throat type intake manifold according to claim 1; It is characterized in that: said trunnion (3) by with internal diameter from small to large successively the sub-trunnion of connected head-to-tail several tubuloses (31,32,33) constitute, the gap in the extraneous gas intake channel is left in the junction of adjacent sub-trunnion; The endoporus entry end diameter of sub-trunnion (31,32,33) is less than the outlet end diameter.
3. electronic fuel injection formula internal-combustion engine hollow throat type intake manifold according to claim 2 is characterized in that: for adjacent sub-trunnion, the sub-trunnion internal diameter of front end is greater than the sub-trunnion external diameter of rear end, and the sub-trunnion end of rear end is stretched in the sub-trunnion of front end.
4. electronic fuel injection formula internal-combustion engine hollow throat type intake manifold according to claim 3, it is characterized in that: the front end of the sub-trunnion of front end is provided with outer conical surface, and the pore rear portion of the sub-trunnion of rear end is provided with internal conical surface.
5. according to claim 2 or 3 or 4 described electronic fuel injection formula internal-combustion engine hollow throat type intake manifold, it is characterized in that: the sub-trunnion on the said trunnion (3) is arranged in a linear.
6. according to claim 2 or 3 or 4 described electronic fuel injection formula internal-combustion engine hollow throat type intake manifold; It is characterized in that: said trunnion (3) sidepiece is provided with the gap of some introducing outer gas streams, and the outlet end diameter of said pod apertures (31) is greater than the entry end diameter.
7. according to claim 1 or 2 or 3 or 4 described electronic fuel injection formula internal-combustion engine hollow throat type intake manifold, it is characterized in that: when trunnion (3) when a plurality of, a plurality of trunnions (3) are fan-shaped array and are looped around oil nozzle (4) on every side.
8. according to claim 1 or 2 or 3 or 4 described electronic fuel injection formula internal-combustion engine hollow throat type intake manifold, it is characterized in that: said trunnion (3) is made for the hard oil resisting material.
9. according to claim 1 or 2 or 3 or 4 described electronic fuel injection formula internal-combustion engine hollow throat type intake manifold, it is characterized in that: said trunnion (3) is and the structure of intake manifold with the material global formation.
10. according to claim 1 or 2 or 3 or 4 described electronic fuel injection formula internal-combustion engine hollow throat type intake manifold; It is characterized in that: when being provided with two or above oil nozzle (4) in each passage (21,22,23,24), all sides of each oil nozzle (4) are equipped with trunnion (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100018665A CN102619655A (en) | 2011-01-10 | 2012-01-05 | Throat-type inlet manifold of electrical control fuel jet-type internal combustion engine |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110003584 | 2011-01-10 | ||
| CN201110003584.4 | 2011-01-10 | ||
| CN2012100018665A CN102619655A (en) | 2011-01-10 | 2012-01-05 | Throat-type inlet manifold of electrical control fuel jet-type internal combustion engine |
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| Publication Number | Publication Date |
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| CN102619655A true CN102619655A (en) | 2012-08-01 |
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| CN2012100018665A Pending CN102619655A (en) | 2011-01-10 | 2012-01-05 | Throat-type inlet manifold of electrical control fuel jet-type internal combustion engine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105494292A (en) * | 2015-12-18 | 2016-04-20 | 山东农业大学 | Portable pesticide atomization machine |
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- 2012-01-05 CN CN2012100018665A patent/CN102619655A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105494292A (en) * | 2015-12-18 | 2016-04-20 | 山东农业大学 | Portable pesticide atomization machine |
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Application publication date: 20120801 |