CN104832319A - Gas/dual-fuel engine fuel gas echelon spraying device - Google Patents
Gas/dual-fuel engine fuel gas echelon spraying device Download PDFInfo
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- CN104832319A CN104832319A CN201510224027.3A CN201510224027A CN104832319A CN 104832319 A CN104832319 A CN 104832319A CN 201510224027 A CN201510224027 A CN 201510224027A CN 104832319 A CN104832319 A CN 104832319A
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- air outlet
- nozzle
- outlet hole
- upper semisection
- gas
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- 239000007789 gas Substances 0.000 title claims abstract description 64
- 239000000446 fuel Substances 0.000 title claims abstract description 23
- 239000002737 fuel gas Substances 0.000 title abstract description 10
- 238000005507 spraying Methods 0.000 title abstract description 4
- 239000000567 combustion gas Substances 0.000 claims description 36
- 238000002347 injection Methods 0.000 claims description 23
- 239000007924 injection Substances 0.000 claims description 23
- 239000011148 porous material Substances 0.000 claims description 13
- 239000007921 spray Substances 0.000 abstract description 16
- 238000002485 combustion reaction Methods 0.000 abstract description 11
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 16
- 239000011435 rock Substances 0.000 description 15
- 239000000203 mixture Substances 0.000 description 12
- 238000009826 distribution Methods 0.000 description 8
- 239000003345 natural gas Substances 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 238000013517 stratification Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000010943 off-gassing Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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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
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
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- Fuel-Injection Apparatus (AREA)
Abstract
The invention provides a gas/dual-fuel engine fuel gas echelon spraying device, which comprises an air cylinder cover and an air cylinder main body, wherein a manifold pipeline is arranged on the air cylinder cover; a high-flow-rate fuel gas spray nozzle is also arranged on the manifold pipeline and comprises a spray nozzle upper half section and a spray nozzle lower half section fixedly connected with the spray nozzle upper half section; the spray nozzle lower half section is a bent pipe; in addition, the tail end of the spray nozzle lower half section is provided with a lower half section air outlet hole; upper half section air outlet holes are formed in the outer surface of the spray nozzle upper half section; the upper half section air outlet holes are arranged in a way that at least two lines of air outlet hole groups are arranged along the length direction of the upper half section spray nozzle, each line of air outlet hole group at least comprises four upper half section air outlet holes, in addition, each line of upper half section air outlet holes are uniformly distributed along the circumferential direction of the upper half section spray nozzle, and the hole diameter of each upper half section air outlet hole is smaller than the hole diameter of the lower half section air outlet holes. The gas/dual-fuel engine fuel gas echelon spraying device has the advantages that the mixing and layering requirements of the fuel gas and the air can be met, the engine combustion process is optimized, and the economic performance and the emission performance are improved.
Description
Technical field
The present invention relates to a kind of injection apparatus, particularly relate to a kind of gas/duel fuel engine combustion gas echelon injection apparatus, belong to technical field of engines.
Background technique
Day by day serious along with energy crisis and environmental pollution, both at home and abroad all in positive various energy-conserving and emission-cutting technology means of research and development.Rock gas is high with its calorific value, combustion cleaning, and rich reserves becomes the alternative energy source of a new generation.Wherein lean combustion is low due to combustion temperature, effectively can reduce NOx emission, becomes important emission-reduction technology means.But, along with lean out, the cyclical variations aggravation of motor, partial combustion or phenomenon of catching fire even is there will be when motor operates near lean flammability limit, in emission, HC and CO obviously increases, and cyclical variations become the important obstruction affecting lean flammability limit, therefore, rationalization's air inlet, combustion process, improving burning quality is the most important thing giving full play to lean burn natural gas engine energy-saving and emission-reduction ability.
In current domestic and international advanced motor, for lean burn natural gas engine fuel supply mode many employings electric controlled multi-point spray regime, because natural gas density is lower than air, intake duct natural gas injection easily causes a large amount of gas accumulation in intake duct, cause air inlet insufficient, charge stratification phenomenon is not obvious.For the difference of the firing mode of gas/duel fuel engine, different air inlets, combustion process method for organizing should be taked, form the concentration of natural gas layering being convenient to burn.The patent of publication number CN101985906B relates to a kind of fuel injection configuration of natural gas engine, this mechanism is by being arranged on more close to the position of engine intake valve by gas nozzle, the combustion gas gap run through between intake valve and valve seat is directly injected in cylinder, utilize the kinergety of fuel gas injection, improve the tubulence energy in cylinder, and then improve burning.But this fuel gas injection structure easily causes the randomness that in cylinder, combustion gas and air concentration distribute to increase, when engine operation is under some specific operation, particularly under Lean Burn Operating, in cylinder, concentration gradient is excessive, cause combustion stability and NOx emission performance not ideal enough.
Summary of the invention
The object of the invention is to provide a kind of gas/duel fuel engine combustion gas echelon injection apparatus to solve prior art Problems existing.
The object of the present invention is achieved like this: comprise cylinder head and cylinder main body, described cylinder head is provided with manifold channels, described manifold channels is also provided with large discharge gas nozzle, the lower semisection nozzle that described large discharge gas nozzle comprises upper semisection nozzle and is connected with upper semisection nozzle, described lower semisection nozzle is bend pipe, and the end of lower semisection nozzle is provided with lower semisection air outlet hole, combustion gas is sprayed onto in cylinder main body through lower semisection air outlet hole, the outer surface of described upper semisection nozzle is provided with upper semisection air outlet hole, the arrangement of described upper semisection air outlet hole is: the air outlet hole group arranging at least two row on the length direction of upper semisection nozzle, often list pore group and have four upper semisection air outlet holes at least and the upper semisection air outlet hole often arranged is evenly arranged along the circumference of upper semisection nozzle, and the aperture of each upper semisection air outlet hole is less than the aperture of lower semisection air outlet hole, combustion gas is sprayed onto in manifold channels through upper semisection air outlet hole.
The present invention also comprises some structure characteristics like this:
1. described in, the diameter of lower semisection nozzle is less than the diameter of upper semisection nozzle.
2. the angle between the axis of upper semisection air outlet hole described in and the axis of upper semisection nozzle is 90 ° or 45 ° or 135 °.
3. the aperture of often listing each upper semisection air outlet hole of pore group described in is unequal.
4. often list the upper semisection air outlet hole of the same apertures of pore group not on the same line.
Compared with prior art, the invention has the beneficial effects as follows: the present invention can realize gas premixing and close and echelon air inlet, improves the mixture strength layering of combustion gas and air in cylinder, and then improves engine combustion quality, the lean flammability limit of expansion motor, reduces the NOx emission of motor simultaneously.The echelon air inlet of two-part mixed gas can be realized by this air inlet method for organizing, by adjustment two-part mixed gas concentration separately, just can make the mixture strength layering needed for being formed in cylinder, ensure that motor can reliably ignition.The drainage of lower semisection nozzle end outlet, making rock gas not colliding in intake valve and intake valve valve seat situation, entering cylinder interior fast, not losing the kinergety of rock gas, accelerates mixing velocity.Also namely the present invention can realize the concentration stratification of demand, optimizes the combustion process of engine interior, improves its Economy and emission performance.
Accompanying drawing explanation
Fig. 1 is general structure schematic diagram of the present invention;
Fig. 2 is the structural representation of injection apparatus of the present invention;
Fig. 3 (A) and Fig. 3 (B) is the axis schematic diagram of upper semisection air outlet hole of the present invention; (being the situation of 45 ° and 135 ° respectively);
Fig. 4 is mixed process schematic diagram in manifold channels (sluggish air inlet);
Fig. 5 is the layout schematic diagram one (along upper semisection nozzle circumference) of upper semisection air outlet hole;
Fig. 6 is the layout schematic diagram two (length direction along upper semisection nozzle) of upper semisection air outlet hole;
Fig. 7 is mixed gas concentration distribution schematic diagram (when having spark plug) in cylinder main body.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the present invention is described in further detail.
Case study on implementation one: composition graphs 1 to Fig. 7, the present invention includes cylinder head 8 and cylinder main body 6, described cylinder head 8 is provided with manifold channels 14, described manifold channels 14 is also provided with large discharge gas nozzle, the lower semisection nozzle 2 that described large discharge gas nozzle comprises upper semisection nozzle 1 and is connected with upper semisection nozzle 1, described lower semisection nozzle 2 is bend pipes, and the end of lower semisection nozzle 2 is provided with lower semisection air outlet hole 15, combustion gas is sprayed onto in cylinder main body 6 through lower semisection air outlet hole 15, form gas impulse 10, the outer surface of described upper semisection nozzle 1 is provided with upper semisection air outlet hole 3, the arrangement of described upper semisection air outlet hole 3 is: the air outlet hole group arranging at least two row on the length direction of upper semisection nozzle, often list pore group and have four upper semisection air outlet holes 3 at least and the upper semisection air outlet hole 3 often arranged is evenly arranged along the circumference of upper semisection nozzle 1, and the aperture of each upper semisection air outlet hole 3 is less than the aperture of lower semisection air outlet hole 15, combustion gas is sprayed onto in manifold channels 14 through upper semisection air outlet hole 3, form multiple gas impulse 10.
Composition graphs 1, technological scheme of the present invention realizes like this, gas/duel fuel engine combustion gas echelon injection apparatus is a large discharge gas nozzle, be made up of upper semisection nozzle 1 and lower semisection nozzle 2, and upper semisection nozzle 1 is thickness is the hollow circular tube of 1-2 millimeter, upper semisection nozzle 1 is connected with gas solenoid valve by connecting pipeline, and by bolt, gas solenoid valve and attachment portion are snugly fitted in intake manifold, upper semisection nozzle 1 tube wall is processed with intake manifold inner chamber and intake duct together with upper semisection air outlet hole 3.
Composition graphs 2, lower semisection nozzle 2 is the hollow circular bend pipe of thickness 1-2 millimeter, and lower semisection nozzle 2 end, near intake valve valve seat, only has a rock gas spray orifice at end, i.e. lower semisection air outlet hole 15, and the diameter of lower semisection air outlet hole 15 is greater than the diameter of upper semisection upper semisection air outlet hole 3.In order to realize the joint and seal of two sections of jet pipes, the mode of welding is utilized to be fixed together by two sections of nozzles.
Lower semisection nozzle 2 guide functions, lower semisection nozzle 2 end near intake valve valve seat 5, tail end center line and intake valve 4 center line for being not parallel to each other, mutually disjoint space line, can not movement interference be produced with intake valve valve rod.Lower semisection nozzle 2 distal center line and intake valve 4 center line angulation, according to the valve shape of working engine, valve seat insert position, ensure that the combustion gas sprayed along lower semisection nozzle 2 can not be collided with intake valve 4, intake valve valve seat 5, after preventing high-pressure gas pulse 10 from colliding reflection, because natural gas density is less than air, formed at intake valve place and pile up, reduce charging efficiency.Rapid in the annular space between intake valve and valve seat from the rock gas pulse 10 of lower semisection nozzle 2 end ejection, compared to the gas impulse 9 sprayed from upper semisection air outlet hole 3, more early can carry out premix with air in cylinder, and then the mixture strength layering realized in cylinder, realize echelon to spray, realize the further action of piston 7.
Case study on implementation two: based on above-described embodiment, the present invention can also be: the diameter of described lower semisection nozzle 2 is less than the diameter of upper semisection nozzle 1, and also namely lower semisection nozzle 2 diameter is less than upper semisection nozzle 1.
Case study on implementation three: based on above-described embodiment and composition graphs 3 (A) and Fig. 3 (B), the present invention can also be: the angle between the axis of described upper semisection air outlet hole 3 and the axis of upper semisection nozzle 1 is 90 ° or 45 ° or 135 °.Upper semisection upper semisection air outlet hole 3 is diameter 1-3 millimeter through hole, connect upper semisection nozzle 1 inner chamber and intake duct, axis and the intake duct air of upper semisection upper semisection air outlet hole 3 carry out flow path direction at an angle, current design proposal has three kinds, (1) upper semisection upper semisection air outlet hole 3 axis and upper semisection nozzle 1 axis are 45 °, and it is consistent that gas impulse 9 and the air inlet of ejection carry out flow path direction; (2) upper semisection upper semisection air outlet hole 3 axis and upper semisection nozzle 1 axis are 135 °, and it is contrary that gas impulse 9 and the air inlet of ejection carry out flow path direction; (3) axis of upper semisection upper semisection air outlet hole 3 and the axis of upper semisection nozzle 1 are 90 °.
Composition graphs 4, the pulsewidth of the gas impulse 9 of upper semisection upper semisection air outlet hole 3 ejection and air inlet incoming flow 12 are at an angle, such structure can ensure that the rock gas sprayed from air outlet hole 3 fully mixes with incoming air and become mixed flow 13, effectively can slow down air movement speed in intake duct.
Case study on implementation four: based on above-described embodiment and composition graphs 5 and Fig. 6, the present invention can also be: described aperture of often listing each upper semisection air outlet hole 3 of pore group is unequal.Often list the upper semisection air outlet hole 3 of the same apertures of pore group not on the same line.
Composition graphs 5, upper semisection air outlet hole 3 in the distribution situation of upper semisection nozzle 1 radial cross section is: radial cross section is uniformly distributed 6 fumaroles, fumarole axis is mutually in 60 degree of angles, upper semisection air outlet hole 3 diameter is incomplete same, the fumarole interval layout that diameter is different, object is that the rock gas pulsewidth bulk range making to be sprayed by upper semisection air outlet hole 3 is different, and then reaches rock gas and the more abundant premix of air in intake duct.
Composition graphs 6, upper semisection air outlet hole 3 in upper semisection nozzle 1 distribution situation is axially: in each radial cross section, fumarole distribution is in 30 degree of angles.The object of such design is that the hole in each radial interface be there will not be in same axial cross section, slow down mixed gas movement velocity also prevent simultaneously spray that high-pressure gas may occur from upper semisection air outlet hole 3 hit wall phenomenon.The needs that fumarole number can run according to motor adjust.
What accompanying drawing 7 provided is mixed gas concentration distribution schematic diagram in cylinder main body, also namely by size and the quantity of adjustment upper semisection air outlet hole 3, make the present invention form the upper dense lower rare of combustion gas, and spark plug 11 is in the denseer region of combustion gas.
Injection apparatus comprises the large discharge rock gas nozzle be arranged on the every cylinder manifold of motor, described large discharge nozzle is made up of upper semisection nozzle 1 and lower semisection nozzle 2 two-part, upper semisection nozzle 1 is connected with fuel gas injection valve and fixes in intake manifold, and lower semisection nozzle 2 end is near intake valve valve seat.Upper semisection nozzle 1 tube wall is equipped with the little upper semisection air outlet hole 3 of some, fumarole is evenly distributed in the radial cross section of upper semisection nozzle 1, and the outgassing direction of upper semisection air outlet hole 3 and suction tude air inlet to carry out flow path direction angled, in radial cross section, upper semisection air outlet hole 3 diameter is incomplete same, and the different fumarole of diameter is spaced apart, in different radial cross section in the no longer same axial cross section in upper semisection air outlet hole 3 position, this structure effectively can be alleviated the combustion gas that combustion gas produces when height supply pressure and hits wall problem.Lower semisection nozzle 2 is the bend pipe that a diameter is less than upper semisection nozzle 2, and be connected with upper semisection nozzle 1, lower semisection nozzle 2 outlet end has a diameter to be greater than the hole of upper semisection air outlet hole 3, lower semisection nozzle 2 center line and intake valve 4 center line are two and are not parallel to each other or crossing space line, and do not produce movement interference with the valve rod of intake valve.The air inlet method for organizing of gas of the present invention/duel fuel engine combustion gas echelon injection apparatus is the combustion gas of being sprayed by upper semisection nozzle 1 and the shock of air entering intake manifold, premix hysteresis, and lower semisection nozzle 2 drainage with spray fast, realize combustion gas shunting and echelon air inlet, by diameter and the quantity of adjustment upper semisection nozzle 1 upper semisection air outlet hole 3, lower semisection nozzle 2 outlet aperture and fuel gas injection timing, meet gas/duel fuel engine combustion gas to mix with air and layering requirement, optimize engine combustion process, improve its Economy and emission performance.
Large discharge nozzle is arranged in intake manifold, is made up of upper semisection nozzle 1 and lower semisection nozzle 2, after upper semisection nozzle 1 connects gas spraying air valve, snugly fits in intake manifold, and upper semisection nozzle 1 tube wall is equipped with some upper semisection air outlet holes 3.Lower semisection nozzle 2 only has an air outlet hole, and air outlet hole position is near intake valve valve seat.
Upper semisection nozzle 1 is a hollow circular tube, be connected with solenoid valve by connecting pipeline, lower semisection nozzle 2 is the similar bend pipes of a structure and upper semisection nozzle 1, and welds together with upper semisection nozzle 1, ensure sealing, lower semisection nozzle 2 diameter is less than upper semisection nozzle 1.
Upper semisection air outlet hole 3 is the through-hole structure connecting large discharge nozzle chambers inside and intake duct, be distributed on upper semisection nozzle 1 tube wall, with upper semisection nozzle 1 axis at an angle, the export center of upper semisection air outlet hole 3 is all distributed in the radial cross section perpendicular to upper semisection nozzle 1 axis, in radial cross section, the diameter of upper semisection air outlet hole 3 is incomplete same, and the span distribution that diameter is different.In each cross section, fumarole distribution rotates to an angle, and the hole namely in each radial interface there will not be in same axial cross section.
Lower semisection nozzle 2 center line and intake valve 4 center line be two be not parallel to each other, mutually disjoint space line, guarantee that lower semisection nozzle 2 does not produce movement interference with the valve rod of intake valve 4.
By the rock gas that upper semisection air outlet hole 3 sprays, combustion gas with air pre-mixing, reduce air movement speed in air flue simultaneously, forms sluggish air inlet in intake duct.And by lower semisection nozzle 2 end ejection rock gas, combustion gas enters cylinder quickly through the annular space between intake valve 4 and valve seat 5, the quick premixing with air in cylinder.
The concentration difference that echelon air inlet is formed, by diameter, the number of adjustment upper semisection air outlet hole 3, can adjust jet timing by control system, jet pulsewidth realizes
Gas of the present invention/duel fuel engine fuel gas ejecting device composition comprises: a large discharge rock gas nozzle, is made up of rock gas upper semisection nozzle 1, rock gas lower semisection nozzle 2.Be fixed on after upper semisection nozzle 1 is connected with snifting valve in intake manifold, lower semisection nozzle 2 end is near intake valve valve seat 5.Upper semisection nozzle 1 is equipped with some upper semisection air outlet holes 3, and upper semisection air outlet hole 3 is arranged and air inlet carrys out flow path direction at an angle.Lower semisection nozzle 2 is the bend pipe that a diameter is less than upper semisection nozzle 2, and be connected with upper semisection nozzle 1, lower semisection nozzle 2 outlet end has a diameter to be greater than the hole of upper semisection air outlet hole 3, lower semisection nozzle centerline and intake valve 4 center line are not parallel to each other, mutually disjoint, and do not affect the normal open and close of valve 4.
Gas/duel fuel engine air inlet method for organizing is:
In aspirating stroke, upper semisection air outlet hole 3 and air inlet carry out flow path direction at an angle, and jet pulse 9 and incoming air collide, and slow down air movement speed in intake duct, realize sluggish air inlet, combustion gas and air enter cylinder after premix in intake duct.And another part rock gas is by lower semisection nozzle 2 end outlet, enters cylinder quickly through the gap between intake valve 4 and valve seat 5, in cylinder, carry out premix with air.The combustion gas of being sprayed by upper semisection nozzle 1 and shock, the premix hysteresis of air entering intake manifold, and lower semisection nozzle 2 drainage with spray fast, realize combustion gas shunting and echelon air inlet.
The export center of upper semisection air outlet hole 3 is all distributed in the radial cross section perpendicular to upper semisection nozzle 1 axis, and in radial cross section, the diameter of upper semisection air outlet hole 3 is different, and the different fumarole of diameter is spaced apart.In each cross section, fumarole distribution rotates to an angle, and the hole in each radial interface be there will not be in same axial cross section.
Catch fire required different mixed gas concentration stratification demands for gas/natural gas engine can by adjustment air jet system structure, i.e. upper semisection air outlet hole 3 diameter, number, lower semisection nozzle 2 outlet diameter, also can be realized by the jet timing of adjustment control system, jet pulsewidth.
Claims (9)
1. gas/duel fuel engine combustion gas echelon injection apparatus, comprise cylinder head and cylinder main body, described cylinder head is provided with manifold channels, it is characterized in that: described manifold channels is also provided with large discharge gas nozzle, the lower semisection nozzle that described large discharge gas nozzle comprises upper semisection nozzle and is connected with upper semisection nozzle, described lower semisection nozzle is bend pipe, and the end of lower semisection nozzle is provided with lower semisection air outlet hole, combustion gas is sprayed onto in cylinder main body through lower semisection air outlet hole, the outer surface of described upper semisection nozzle is provided with upper semisection air outlet hole, the arrangement of described upper semisection air outlet hole is: the air outlet hole group arranging at least two row on the length direction of upper semisection nozzle, often list pore group and have four upper semisection air outlet holes at least and the upper semisection air outlet hole often arranged is evenly arranged along the circumference of upper semisection nozzle, and the aperture of each upper semisection air outlet hole is less than the aperture of lower semisection air outlet hole, combustion gas is sprayed onto in manifold channels through upper semisection air outlet hole.
2. a kind of gas according to claim 1/duel fuel engine combustion gas echelon injection apparatus, is characterized in that: the diameter of described lower semisection nozzle is less than the diameter of upper semisection nozzle.
3. a kind of gas according to claim 1 and 2/duel fuel engine combustion gas echelon injection apparatus, is characterized in that: the angle between the axis of described upper semisection air outlet hole and the axis of upper semisection nozzle is 90 ° or 45 ° or 135 °.
4. a kind of gas according to claim 1 and 2/duel fuel engine combustion gas echelon injection apparatus, is characterized in that: described aperture of often listing each upper semisection air outlet hole of pore group is unequal.
5. a kind of gas according to claim 3/duel fuel engine combustion gas echelon injection apparatus, is characterized in that: described aperture of often listing each upper semisection air outlet hole of pore group is unequal.
6. a kind of gas according to claim 1 and 2/duel fuel engine combustion gas echelon injection apparatus, is characterized in that: often list the upper semisection air outlet hole of the same apertures of pore group not on the same line.
7. a kind of gas according to claim 3/duel fuel engine combustion gas echelon injection apparatus, is characterized in that: often list the upper semisection air outlet hole of the same apertures of pore group not on the same line.
8. a kind of gas according to claim 4/duel fuel engine combustion gas echelon injection apparatus, is characterized in that: often list the upper semisection air outlet hole of the same apertures of pore group not on the same line.
9. a kind of gas according to claim 5/duel fuel engine combustion gas echelon injection apparatus, is characterized in that: often list the upper semisection air outlet hole of the same apertures of pore group not on the same line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510224027.3A CN104832319B (en) | 2015-05-05 | 2015-05-05 | A kind of gas/dual fuel engine combustion gas echelon injection apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510224027.3A CN104832319B (en) | 2015-05-05 | 2015-05-05 | A kind of gas/dual fuel engine combustion gas echelon injection apparatus |
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| Publication Number | Publication Date |
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| CN104832319A true CN104832319A (en) | 2015-08-12 |
| CN104832319B CN104832319B (en) | 2017-03-01 |
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| CN201510224027.3A Expired - Fee Related CN104832319B (en) | 2015-05-05 | 2015-05-05 | A kind of gas/dual fuel engine combustion gas echelon injection apparatus |
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Cited By (3)
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| CN105179111A (en) * | 2015-09-09 | 2015-12-23 | 哈尔滨工程大学 | Gas/dual-fuel engine intake manifold gas injection device |
| CN107061061A (en) * | 2017-06-28 | 2017-08-18 | 哈尔滨工程大学 | A kind of integrated form of mixed admission intersects annular groove gaseous fuel jet mixing device |
| CN109386403A (en) * | 2018-09-29 | 2019-02-26 | 哈尔滨工程大学 | It is a kind of for have twin-inlet gas, dual fuel engine bivalve type fuel gas ejecting device and its control method |
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| CN107061061A (en) * | 2017-06-28 | 2017-08-18 | 哈尔滨工程大学 | A kind of integrated form of mixed admission intersects annular groove gaseous fuel jet mixing device |
| CN109386403A (en) * | 2018-09-29 | 2019-02-26 | 哈尔滨工程大学 | It is a kind of for have twin-inlet gas, dual fuel engine bivalve type fuel gas ejecting device and its control method |
| CN109386403B (en) * | 2018-09-29 | 2021-10-26 | 哈尔滨工程大学 | Double-valve type gas injection device for gas and dual-fuel engine with double gas inlet channels and control method of double-valve type gas injection device |
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| CN104832319B (en) | 2017-03-01 |
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