CN115977789B - Ignition type heavy oil engine combustion system - Google Patents
Ignition type heavy oil engine combustion system Download PDFInfo
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- CN115977789B CN115977789B CN202310035057.4A CN202310035057A CN115977789B CN 115977789 B CN115977789 B CN 115977789B CN 202310035057 A CN202310035057 A CN 202310035057A CN 115977789 B CN115977789 B CN 115977789B
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- piston
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- spherical surface
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- 238000002485 combustion reaction Methods 0.000 title claims abstract description 46
- 239000000295 fuel oil Substances 0.000 title claims abstract description 40
- 230000007704 transition Effects 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 3
- 239000000446 fuel Substances 0.000 abstract description 10
- 238000005096 rolling process Methods 0.000 abstract description 10
- 239000007921 spray Substances 0.000 abstract description 5
- 230000008020 evaporation Effects 0.000 description 6
- 238000001704 evaporation Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- TVMXDCGIABBOFY-UHFFFAOYSA-N octane Chemical compound CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
-
- 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
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Combustion Methods Of Internal-Combustion Engines (AREA)
Abstract
The invention discloses an ignition type heavy oil engine combustion system, which relates to the technical field of internal combustion engines and comprises a cylinder cover, a cylinder wall, a piston, an air auxiliary nozzle and a first spark plug, wherein a flow guide cavity is arranged on the bottom surface of the cylinder cover, the flow guide cavity is a circular groove, the top surface of the circular groove is an arc surface protruding outwards away from the piston, a rolling cavity communicated with the flow guide cavity is arranged on the arc surface, the rolling cavity comprises a first spherical surface and a second spherical surface, the spherical centers of the first spherical surface and the second spherical surface are arranged at intervals along one radial direction of the piston and are positioned on one side of a plane passing through the axis of the piston, one arc side of the first spherical surface and one arc side of the second spherical surface are oppositely arranged and are connected in a tangent mode through a transition surface, the other arc side of the first spherical surface is in transition mode through a fan ring surface and is in transition mode with the arc surface, the mixing quality in a two-stroke heavy oil engine cylinder can be improved, the capturing rate of heavy oil spray can be improved, the uniformity of fuel in the cylinder can be improved, and the heavy oil combustion quality can be improved.
Description
Technical Field
The invention relates to the technical field of internal combustion engines, in particular to a combustion system of an ignition type heavy oil engine.
Background
The traditional ignition type piston engine is often suitable for gasoline fuel, has the advantages of compact structure and high power-weight ratio, but the traditional ignition mode has poor adaptability to heavy oil fuel, mainly has the problems of poor evaporation mixing property, serious knocking and the like caused by the characteristics of large kinematic viscosity, low octane number and the like of the heavy oil fuel, and cannot be well suitable for combustion of the heavy oil fuel.
Disclosure of Invention
The invention aims to provide an ignition type heavy oil engine combustion system which solves the problems in the prior art, can improve the mixing quality in a cylinder of a two-stroke heavy oil engine, improve the capturing rate of heavy oil spray, improve the uniformity of fuel oil distribution in the cylinder and improve the combustion quality of heavy oil.
In order to achieve the above object, the present invention provides the following solutions:
The invention provides an ignition type heavy oil engine combustion system, which comprises a cylinder cover, a cylinder wall, a piston, an air auxiliary nozzle and a first spark plug, wherein the circumferential edge of the cylinder cover is fixedly connected with the cylinder wall, the piston is in sliding connection with the inner wall surface of the cylinder wall, the bottom surface of the cylinder cover, the top surface of the piston and the cylinder wall enclose a combustion chamber, the bottom surface of the cylinder cover is provided with a flow guide cavity, the flow guide cavity is a circular groove, the axis of the circular groove coincides with the axis of the piston, the top surface of the circular groove is an arc surface protruding towards the direction far away from the piston, the radius of the arc surface is larger than the radius of the piston, the arc surface is provided with a rolling flow cavity communicated with the flow guide cavity, the rolling flow cavity comprises a first spherical surface and a second spherical surface, the included angle between planes of the two arc edges of the first spherical surface is smaller than 90 degrees, the included angle between the planes of the two arc sides of the second sphere is 90 degrees, the sphere center of the first sphere and the sphere center of the second sphere are arranged at intervals along one radial direction of the piston and are positioned on one side of the plane passing through the axis of the piston, one arc side of the first sphere and one arc side of the second sphere are oppositely arranged and are tangentially connected through a transitional surface, the other arc side of the first sphere is in transitional communication with the arc surface through a fan ring surface, the short arc side of the fan ring surface is tangentially connected with the first sphere, the other arc side of the second sphere is in transitional communication with the arc surface, the air auxiliary nozzle is fixed at the inner top of the tumble cavity, the axis of the air auxiliary nozzle is parallel to the axis of the piston and passes through the center of the sphere of the first sphere and the midpoint of the sphere center of the second sphere, the first spark plug is fixed on the inner wall of the tumble cavity.
Preferably, the radius of the first sphere is the same as the radius of the second sphere.
Preferably, the connecting surface of the cylinder cover and the cylinder wall is taken as a reference surface, the height of the combustion chamber is 0.32-0.38 times of the diameter of the piston, the heights of the spherical centers of the first spherical surface and the second spherical surface are both 0.055-0.06 times of the diameter of the piston, the distance between the midpoint of the spherical centers of the first spherical surface and the second spherical surface and the axis of the piston is 0.08-0.12 times of the diameter of the piston, the distance between the spherical centers of the first spherical surface and the second spherical surface is 0.025-0.03 times of the diameter of the piston, the radius of the first spherical surface and the radius of the second spherical surface are both 0.25-0.3 times of the diameter of the piston, the included angle between the generatrix of the circular surface of the fan and the reference surface is 65-75 degrees, and the radius of the cambered surface is not less than 1.8 times of the diameter of the piston.
Preferably, the top surface of the piston is provided with a truncated cone-shaped bulge.
Preferably, the included angle between the generatrix of the circular truncated cone-shaped bulge and the bottom surface of the circular truncated cone-shaped bulge is 8-12 degrees, the height of the circular truncated cone-shaped bulge is not more than 0.05 times of the diameter of the piston, and the length of the generatrix of the circular groove is 0.02-0.03 times of the diameter of the piston.
Preferably, the first spark plug is fixed in the first spherical surface, the included angle between the axis of the first spark plug and the axis of the air auxiliary nozzle is 45-60 degrees, and the electrode of the first spark plug is positioned between two conical surfaces taking the axis of the air auxiliary nozzle as a central line, the air auxiliary nozzle as an apex and the cone angle of 30 degrees and 50 degrees.
Preferably, the spark plug further comprises a second spark plug, and the second spark plug is fixed in the second spherical surface.
Preferably, the included angle between the axis of the second spark plug and the axis of the air auxiliary nozzle is 45-60 degrees, the electrode of the second spark plug is positioned between two conical surfaces which take the axis of the air auxiliary nozzle as a central line, the air auxiliary nozzle is a vertex and the cone angle is 30 degrees and 50 degrees, and the included angle between the plane where the axis of the first spark plug and the axis of the air auxiliary nozzle is positioned and the plane where the axis of the second spark plug and the axis of the air auxiliary nozzle are positioned is set.
Preferably, the first spark plug and the second spark plug are both high-energy ignition spark plugs.
Preferably, the fan ring surface and the second spherical surface are in fillet transition with the cambered surface, and the fillet radius is 1.2-2 mm.
Compared with the prior art, the invention has the following technical effects:
The invention provides a combustion system of an ignition type heavy oil engine, which adopts a rolling flow cavity which is arranged on an arc surface and communicated with a flow guide cavity, wherein the rolling flow cavity comprises a first spherical surface and a second spherical surface, the included angle between the planes of the two arc edges of the first spherical surface is smaller than 90 degrees, the included angle between the planes of the two arc edges of the second spherical surface is 90 degrees, the spherical centers of the first spherical surface and the spherical centers of the second spherical surface are arranged at intervals along one radial direction of a piston and are positioned on one side of a plane passing through the axis of a piston, one arc edge of the first spherical surface and one arc edge of the second spherical surface are oppositely arranged and are in tangential connection through a transition surface, the other arc edge of the first spherical surface is in transitional connection with the arc surface through a fan-shaped ring surface, the short arc edge of the fan-shaped ring surface is in tangential connection with the first spherical surface, the other arc edge of the second spherical surface is in transitional connection with the arc surface to form an offset type double-spherical combustion chamber, and the structure formed by the arc surface and the top surface of the piston, the air is guided into the rolling flow cavity, the short circuit in a cylinder of the two-stroke engine, the evaporation and the oil cylinder are accelerated, the evaporation and the mixing of spraying are improved, the inner capturing and the fuel cylinder and the mixing efficiency are improved, the engine and the efficiency is improved, the engine is further improved, and the engine efficiency is improved, and the engine is further economical.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a combustion system of an ignition type heavy oil engine according to the present invention;
FIG. 2 is a top view of the ignition type heavy oil engine combustion system provided by the present invention;
FIG. 3 is a cross-sectional view of A-A of FIG. 2;
In the figure: 1-cylinder wall, 2-piston, 3-cylinder head, 4-first spark plug, 5-air auxiliary nozzle, 6-second spark plug, 7-diversion cavity, 8-tumble cavity, 9-cambered surface, 10-first sphere, 11-second sphere, 12-transition surface, 13-fan ring surface, 14-round platform shape protruding.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention aims to provide an ignition type heavy oil engine combustion system which solves the problems in the prior art, can improve the mixing quality in a cylinder of a two-stroke heavy oil engine, improve the capturing rate of heavy oil spray, improve the uniformity of fuel oil distribution in the cylinder and improve the combustion quality of heavy oil.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
The invention provides a combustion system of an ignition type heavy oil engine, as shown in figures 1-3, the combustion system of the ignition type heavy oil engine comprises a cylinder cover 3, a cylinder wall 1, a piston 2, an air auxiliary nozzle 5 and a first spark plug 4, wherein the peripheral edge of the cylinder cover 3 is fixedly connected with the cylinder wall 1, the piston 2 is in sliding connection with the inner wall surface of the cylinder wall 1, the bottom surface of the cylinder cover 3, the top surface of the piston 2 and the cylinder wall 1 enclose a combustion chamber, the bottom surface of the cylinder cover 3 is provided with a flow guide cavity 7, the flow guide cavity is a circular groove, the axis of the circular groove coincides with the axis of the piston 2, the top surface of the circular groove is a cambered surface 9 protruding towards the direction far away from the piston 2, the radius of the cambered surface 9 is larger than the radius of the piston 2, a rolling flow cavity 8 communicated with the flow guide cavity is arranged on the cambered surface 9, the rolling flow cavity 8 comprises a first spherical surface 10 and a second spherical surface 11, the included angle between planes of the two cambered edges of the first spherical surface 10 is smaller than 90 degrees, the included angle between the planes of the two arc sides of the second spherical surface 11 is 90 degrees, the spherical center of the first spherical surface 10 and the spherical center of the second spherical surface 11 are arranged at intervals along one radial direction of the piston 2 and are positioned on one side of the plane passing through the axis of the piston 2, one arc side of the first spherical surface 10 and one arc side of the second spherical surface 11 are oppositely arranged and are tangentially connected through a transition surface 12, the other arc side of the first spherical surface 10 is in transitional communication with the cambered surface 9 through a fan-shaped annular surface 13, the short arc side of the fan-shaped annular surface 13 is tangentially connected with the first spherical surface 10, the other arc side of the second spherical surface 11 is in transitional communication with the cambered surface 9, the air auxiliary nozzle 5 is fixed at the inner top of the rolling flow cavity 8, the axis of the air auxiliary nozzle 5 is parallel to the axis of the piston 2 and passes through the spherical center of the first spherical surface 10 and the midpoint of the spherical center of the second spherical surface 11, the first spark plug 4 is fixed to the inner wall of the tumble chamber 8.
In the specific implementation process, in the reciprocating motion process of the piston 2 in the two-stroke engine along the axis direction of the piston 2, air enters a combustion chamber through an air inlet on the cylinder wall 1, under the structural action of an offset double-ball combustion chamber formed by the first spherical surface 10 and the second spherical surface 11 and the top surface of the piston 2, air is guided into a tumble cavity 8 to form tumble, the ventilation short circuit of the two-stroke engine is restrained, the evaporation and the mixing of heavy oil spray are accelerated, the capturing rate and the uniformity of mixed gas in a fuel cylinder are improved, the power performance and the economy of the engine are improved, the emission of the engine are reduced, the heavy oil combustion quality is improved, the mixed gas is ignited under the action of the first spark plug 4, the piston 2 is worked, and the combustion tail gas is discharged from the combustion chamber through an air outlet on the cylinder wall 1.
Further, the radius of the first sphere 10 is the same as the radius of the second sphere 11.
Further, as shown in FIG. 3, the height h of the combustion chamber is 0.32 to 0.38 times, preferably 0.36 times, the diameter d of the piston 2, the center of the first spherical surface 10 and the center of the second spherical surface 11 are each 0.055 to 0.06 times, preferably 0.058 times, the diameter d of the piston 2, the distance a1 between the midpoint of the center of the first spherical surface 10 and the center of the second spherical surface 11 and the axis of the piston 2 is 0.08 to 0.12 times, preferably 0.1 times, the diameter d of the piston 2, the distance a2 between the center of the first spherical surface 10 and the center of the second spherical surface 11 is 0.025 to 0.03 times the diameter d of the piston 2, the radius r1 of the first spherical surface 10 and the radius r1 of the second spherical surface 11 are 0.25-0.3 times, preferably 0.28 times, of the diameter d of the piston 2, the included angle beta between the generatrix of the fan ring surface 13 and the reference surface is 65-75 degrees, preferably 70 degrees, the radius r2 of the cambered surface 9 is not smaller than 1.8 times, preferably 2 times, of the diameter d of the piston 2, and the combustion chamber in the state further improves the capturing rate in a fuel cylinder and the uniformity of mixed gas, improves the dynamic property and economy of the engine, and reduces the emission of the engine.
Further, a truncated cone-shaped protrusion 14 is provided on the top surface of the piston 2.
In the concrete implementation process, the arrangement of the circular truncated cone-shaped protrusions 14 can further optimize the structure of the diversion cavity 7 formed by the cambered surface 9 and the piston 2, and further improves the capture rate in the fuel cylinder.
Specifically, the included angle α between the generatrix of the circular truncated cone-shaped protrusion 14 and the bottom surface of the circular truncated cone-shaped protrusion 14 is 8 to 12 °, preferably 10 °, the height of the circular truncated cone-shaped protrusion 14 is not more than 0.05 times, preferably 0.05 times, the diameter d of the piston 2, and the length h1 of the generatrix of the circular recess is 0.02 to 0.03 times, preferably 0.03 times, the diameter d of the piston 2.
Further, as shown in fig. 3, the first spark plug 4 is fixed in the first spherical surface 10, the axis of the first spark plug 4 forms an angle of 45 ° to 60 °, preferably 50 °, with the axis of the air auxiliary nozzle 5, and the electrode of the first spark plug 4 is located between two conical surfaces having the axis of the air auxiliary nozzle 5 as the center line, the air auxiliary nozzle 5 as the apex, and the cone angles of 30 ° and 50 °.
In the specific implementation process, the spray sprayed by the air auxiliary nozzle 5 is developed to the ignition time, and the concentration of the mixed gas near the central electrode of the first spark plug 4 is in a flammable interval, so that the success probability of cold start ignition and the working stability of the engine during normal operation are improved.
Further, the ignition type heavy oil engine combustion system further comprises a second spark plug 6, and the second spark plug 6 is fixed in the second spherical surface 11; the included angle between the axis of the second spark plug 6 and the axis of the air auxiliary nozzle 5 is 45-60 degrees, the electrode of the second spark plug 6 is positioned between two conical surfaces which take the axis of the air auxiliary nozzle 5 as a central line, the air auxiliary nozzle 5 as an apex and the cone angle of 30 degrees and 50 degrees, and the plane of the axis of the first spark plug 4 and the axis of the air auxiliary nozzle 5 is arranged at an included angle with the plane of the axis of the second spark plug 6 and the plane of the axis of the air auxiliary nozzle 5.
Specifically, the first spark plug 4 and the second spark plug 6 are both high-energy ignition spark plugs.
In the specific implementation process, the first spark plug 4 and the second spark plug 6 can generate two fire cores, the two fire cores are very close to the centers of the two spherical surfaces, the propagation distance of flame is short, the combustion speed of the mixed gas is high, and the occurrence of knocking can be restrained.
Further, as shown in fig. 3, the fan ring surface 13 and the second spherical surface 11 are in rounded transition with the cambered surface 9, and the radius r3 of the rounded corner is 1.2-2 mm, preferably 1.5mm, so that air diversion can be further optimized.
In summary, in the ignition type heavy oil engine combustion system in the above embodiment, the tumble cavity 8 communicated with the diversion cavity is provided on the cambered surface 9, the tumble cavity 8 includes the first spherical surface 10 and the second spherical surface 11, the included angle between the planes of the two cambered edges of the first spherical surface 10 is smaller than 90 °, the included angle between the planes of the two cambered edges of the second spherical surface 11 is 90 °, the spherical centers of the first spherical surface 10 and the second spherical surface 11 are arranged at intervals along one radial direction of the piston 2, and are both located at one side of the plane passing through the axis of the piston 2, one cambered edge of the first spherical surface 10 and one cambered edge of the second spherical surface 11 are oppositely arranged and are tangentially connected through the transition surface 12, the other cambered edge of the first spherical surface 10 is in transitional communication with the cambered surface 9 through the fan annular surface 13, the short cambered edge of the fan annular surface 13 is tangentially connected with the first spherical surface 10, the other cambered edge of the second spherical surface 11 is in transitional communication with the cambered surface 9, a biased double-spherical combustion chamber is formed, and the structure formed between the cambered surface 9 and the top surface 2 is formed, the air is guided into the tumble cavity 8, the two-phase evaporation and the engine is suppressed, the two-phase evaporation and the engine is improved, the fuel efficiency is improved, and the engine combustion efficiency is improved, and the engine efficiency is better and the engine efficiency is better and the engine.
The principles and embodiments of the present invention have been described in detail with reference to specific examples, which are provided to facilitate understanding of the method and core ideas of the present invention; also, it is within the scope of the present invention to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the invention.
Claims (10)
1. An ignition type heavy oil engine combustion system, characterized in that: comprising the following steps: the cylinder head, the cylinder wall, the piston, air auxiliary nozzle and first spark plug, the border of circle of cylinder head with cylinder wall fixed connection, the piston with the internal face sliding connection of cylinder wall, the bottom surface of cylinder head, the piston top surface with the cylinder wall encloses into the combustion chamber, the bottom surface of cylinder head is provided with the water conservancy diversion chamber, the water conservancy diversion chamber is circular recess, the axis of circular recess with the axis coincidence of piston, the top surface of circular recess is for keeping away from the cambered surface of piston direction evagination, the radius of cambered surface is greater than the radius of piston, be provided with on the cambered surface with the round flow chamber of water conservancy diversion chamber intercommunication, the round flow chamber includes first sphere and second sphere, the contained angle between the two arcwall sides of first sphere respectively lies in the plane is less than 90, the spherical center of first sphere and the spherical center of second sphere is arranged along one radial interval of piston, and all lie in the plane of piston is kept away from the cambered surface of piston direction the cambered surface, the first cambered surface is located the first cambered surface and the second cambered surface is crossed the second cambered surface and is connected with the auxiliary nozzle, one side of the spherical center is passed through the first cambered surface and the second cambered surface is connected with the air fan, the air fan is connected with the axial line is passed through to the second cambered surface, the auxiliary fan is connected with the centre of air fan, the centre of air fan is connected with the centre of one side of arc, the side is connected with the auxiliary fan is connected with the centre of air fan through the arc, the first spark plug is fixed on the inner wall of the tumble cavity.
2. The spark-ignition heavy-oil engine combustion system of claim 1, wherein: the radius of the first sphere is the same as the radius of the second sphere.
3. The spark-ignition heavy-oil engine combustion system of claim 2, wherein: the method comprises the steps that the connecting surface of the cylinder cover and the cylinder wall is taken as a reference surface, the height of the combustion chamber is 0.32-0.38 times of the diameter of the piston, the heights of the spherical centers of the first spherical surface and the second spherical surface are both 0.055-0.06 times of the diameter of the piston, the distance between the midpoint of the spherical centers of the first spherical surface and the spherical centers of the second spherical surface and the axis of the piston is 0.08-0.12 times of the diameter of the piston, the distance between the spherical centers of the first spherical surface and the spherical centers of the second spherical surface is 0.025-0.03 times of the diameter of the piston, the radius of the first spherical surface and the radius of the second spherical surface are both 0.25-0.3 times of the diameter of the piston, the included angle between the generatrix of the fan ring surface and the reference surface is 65-75 degrees, and the radius of the cambered surface is not smaller than 1.8 times of the diameter of the piston.
4. The spark-ignition heavy-oil engine combustion system of claim 1, wherein: the top surface of the piston is provided with a truncated cone-shaped bulge.
5. The spark-ignition heavy-oil engine combustion system of claim 4, wherein: the included angle between the generatrix of the circular truncated cone-shaped bulge and the bottom surface of the circular truncated cone-shaped bulge is 8-12 degrees, the height of the circular truncated cone-shaped bulge is not more than 0.05 times of the diameter of the piston, and the length of the generatrix of the circular groove is 0.02-0.03 times of the diameter of the piston.
6. The spark-ignition heavy-oil engine combustion system of claim 1, wherein: the first spark plug is fixed in the first spherical surface, the included angle between the axis of the first spark plug and the axis of the air auxiliary nozzle is 45-60 degrees, and the electrode of the first spark plug is positioned between two conical surfaces taking the axis of the air auxiliary nozzle as a central line, the air auxiliary nozzle as a vertex and the cone angle of 30-50 degrees.
7. The spark-ignition heavy-oil engine combustion system of claim 6, wherein: the spark plug further comprises a second spark plug, and the second spark plug is fixed in the second spherical surface.
8. The spark-ignition heavy-oil engine combustion system of claim 7, wherein: the included angle between the axis of the second spark plug and the axis of the air auxiliary nozzle is 45-60 degrees, the electrode of the second spark plug is positioned between two conical surfaces which take the axis of the air auxiliary nozzle as a central line, the air auxiliary nozzle is a vertex and the cone angle is 30 degrees and 50 degrees, and the included angle between the axis of the first spark plug and the plane where the axis of the air auxiliary nozzle is positioned and the plane where the axis of the second spark plug and the axis of the air auxiliary nozzle are positioned are arranged.
9. The spark-ignition heavy-oil engine combustion system of claim 7, wherein: the first spark plug and the second spark plug are both high-energy ignition spark plugs.
10. The spark-ignition heavy-oil engine combustion system of claim 1, wherein: the fan ring surface and the second spherical surface are in fillet transition with the cambered surface, and the fillet radius is 1.2-2 mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310035057.4A CN115977789B (en) | 2023-01-10 | 2023-01-10 | Ignition type heavy oil engine combustion system |
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| CN202310035057.4A CN115977789B (en) | 2023-01-10 | 2023-01-10 | Ignition type heavy oil engine combustion system |
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| CN115977789A CN115977789A (en) | 2023-04-18 |
| CN115977789B true CN115977789B (en) | 2024-07-05 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201246211Y (en) * | 2008-08-27 | 2009-05-27 | 重庆宗申发动机制造有限公司 | Motorcycle engine combustion chamber |
| CN115306536A (en) * | 2022-08-02 | 2022-11-08 | 北京理工大学 | Active jet flow spark induced heavy oil composite combustion system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6338327B1 (en) * | 1999-03-29 | 2002-01-15 | Fuji Jukogyo Kabushiki Kaisha | Combustion chamber structure of in-cylinder direct fuel injection engine |
| JP6295487B1 (en) * | 2017-10-24 | 2018-03-20 | 正裕 井尻 | Internal combustion engine |
| EP3751123A1 (en) * | 2019-06-14 | 2020-12-16 | Winterthur Gas & Diesel AG | Cylinder head for a cylinder of a large diesel engine and method for repairing a cylinder head |
| CN215444219U (en) * | 2021-07-07 | 2022-01-07 | 广西银翼动力科技有限公司 | Combustion chamber structure of gas-entraining direct-injection heavy oil engine |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201246211Y (en) * | 2008-08-27 | 2009-05-27 | 重庆宗申发动机制造有限公司 | Motorcycle engine combustion chamber |
| CN115306536A (en) * | 2022-08-02 | 2022-11-08 | 北京理工大学 | Active jet flow spark induced heavy oil composite combustion system |
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