CN116480484A - Cylinder head assembly, engine and vehicle - Google Patents
Cylinder head assembly, engine and vehicle Download PDFInfo
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- CN116480484A CN116480484A CN202310369160.2A CN202310369160A CN116480484A CN 116480484 A CN116480484 A CN 116480484A CN 202310369160 A CN202310369160 A CN 202310369160A CN 116480484 A CN116480484 A CN 116480484A
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- air inlet
- cylinder head
- plane
- cylinder
- intake
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- 238000002485 combustion reaction Methods 0.000 claims abstract description 35
- 238000001125 extrusion Methods 0.000 claims description 61
- 230000007704 transition Effects 0.000 claims description 16
- 239000000203 mixture Substances 0.000 claims description 11
- 239000007789 gas Substances 0.000 description 56
- 230000005540 biological transmission Effects 0.000 description 4
- 238000010892 electric spark Methods 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F1/00—Cylinders; Cylinder heads
- F02F1/24—Cylinder heads
- F02F1/42—Shape or arrangement of intake or exhaust channels in cylinder heads
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B31/00—Modifying induction systems for imparting a rotation to the charge in the cylinder
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F1/00—Cylinders; Cylinder heads
- F02F1/24—Cylinder heads
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F1/00—Cylinders; Cylinder heads
- F02F1/24—Cylinder heads
- F02F1/242—Arrangement of spark plugs or injectors
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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
- Y02T10/12—Improving ICE efficiencies
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The application provides a cylinder cover assembly, an engine and a vehicle, wherein the cylinder cover assembly comprises a cylinder cover, and the cylinder cover is provided with at least two air inlets and at least two air outlets; the cylinder cover comprises a valve disc conical surface positioned at the bottom of the cylinder cover, the air inlet passage and the air outlet passage extend to the valve disc conical surface, and the valve disc conical surface is used for forming a combustion chamber of an engine together with the inner wall of the cylinder body and the top surface of a piston positioned in the cylinder body; the part of the conical surface of the valve disc part, which is positioned between the adjacent air inlets, is provided with an air inlet squeezing part, and the air inlet squeezing part is configured to guide the mixed air flow entering the combustion chamber from the air inlets to flow towards the central line direction of the cylinder cover. Through this application can solve and promote turbulent energy through the tumble ratio that improves relevant engine intake duct, and then improve the great problem of the degree of difficulty of engine thermal efficiency, further improve engine thermal efficiency.
Description
Technical Field
The application relates to the technical field of vehicle engines, in particular to a cylinder cover assembly, an engine and a vehicle.
Background
The engine thermal efficiency refers to the ratio of the thermal equivalent of the engine's effective power to the heat content of the fuel consumed per unit time. Engine thermal efficiency is used to assess the economy of an engine as a heat engine. Improving the thermal efficiency of the engine is an important means of saving energy. At present, the most direct method for improving the thermal efficiency of the engine is to improve the combustion speed, and the main stream is to improve the turbulence energy in the engine cylinder at the moment of ignition.
In the related art, the improvement of turbulence energy is generally achieved by improving the tumble ratio of an engine air inlet.
However, under the distribution and cylinder cover arrangement structure of the related engine, the turbulence energy is further improved by improving the tumble ratio of the air inlet channel, so that the difficulty of improving the thermal efficiency of the engine is high.
Disclosure of Invention
The application provides a cylinder head assembly, engine and vehicle, can solve and promote turbulent energy through improving the tumble ratio of relevant engine intake duct, and then improve the great problem of the degree of difficulty of engine thermal efficiency.
In a first aspect, the present application provides a cylinder head assembly comprising a cylinder head provided with at least two intake ports and at least two exhaust ports, the cylinder head comprising a valve disc cone at a bottom thereof, the intake ports and the exhaust ports extending to the valve disc cone for forming a combustion chamber of an engine with an inner wall of a cylinder block and a top surface of a piston located within the cylinder block;
the part of the conical surface of the valve disc part, which is positioned between the adjacent air inlets, is provided with an air inlet squeezing part, and the air inlet squeezing part is configured to guide the mixed air flow entering the combustion chamber from the air inlets to flow towards the central line direction of the cylinder cover.
According to the technical scheme, the air inlet extruding part is formed at the part of the conical surface of the valve disc part of the cylinder cover, which is positioned between the adjacent air inlets, and the trend of the mixed gas entering the combustion chamber through the air inlets can be guided by the air inlet extruding part, so that the mixed gas flows towards the central line direction of the cylinder cover, the mixed gas in the cylinder of the engine flows, the turbulent energy in the cylinder of the engine can be effectively improved under the cooperation of the air inlets, the combustion speed of the mixed gas is improved, and the thermal efficiency of the engine is further improved.
With reference to the first aspect, in some possible implementations, the air intake extruding portion includes a first air intake extruding plane, a second air intake extruding plane, a third air intake extruding plane, and a fourth air intake extruding plane sequentially from bottom to top;
the included angles of the first air inlet extrusion plane, the second air inlet extrusion plane, the third air inlet extrusion plane and the fourth air inlet extrusion plane and the bottom surface of the cylinder cover are respectively a 1 、a 2 、a 3 And a 4 Wherein, a is more than or equal to 70 degrees 1 ≤90°，2a 4 ≤a 3 ≤a 1 ，0.5a 2 ≤a 4 ≤2a 2 。
In the technical scheme, the first air inlet extrusion plane, the second air inlet extrusion plane, the third air inlet extrusion plane and the fourth air extrusion plane form the included angle a with the bottom surface of the cylinder cover 1 、a 2 、a 3 And a 4 The spark plug is arranged in the limited range, so that the mixed gas in the engine cylinder is converged towards the center of the cylinder, more mixed gas can be gathered around the electrode of the spark plug, the transmission path of the spark plug electric spark is reduced, the mixed gas is conveniently and rapidly ignited, and the combustion efficiency of the engine is further improved.
With reference to the first aspect and the foregoing implementation manner, in some possible implementation manners, the air inlet extruding portion further includes a transition curved surface;
and two adjacent air inlet and air extrusion planes are in smooth transition connection through the transition curved surface.
According to the technical scheme, the transition curved surface is arranged between the two adjacent air inlet extrusion planes, so that the mixed gas flow can be guided to smoothly flow through the air inlet extrusion planes of the straight line section, turbulence is effectively reduced, and the fluidity separation of the mixed gas flow is reduced.
With reference to the first aspect and the foregoing implementation manners, in some possible implementation manners, the transition curved surface includes:
the two ends of the first arc surface are respectively connected with the first air inlet extrusion plane and the second air inlet extrusion plane, and the concave surface of the first arc surface faces the bottom surface of the cylinder cover;
the two ends of the second arc surface are respectively connected with the second air inlet extrusion plane and the third air inlet extrusion plane, and the concave surface of the second arc surface is back to the bottom surface of the cylinder cover;
and two ends of the third arc surface are respectively connected with the third air inlet extrusion plane and the fourth air inlet extrusion plane, and the concave surface of the third arc surface faces the bottom surface of the cylinder cover.
With reference to the first aspect and the foregoing implementation manner, in some possible implementation manners, radii of the first arc surface, the second arc surface, and the third arc surface are respectively r 1 、r 2 And r 3 Wherein r is 2 ＝r 3 ≥r 1 ≥2°。
With reference to the first aspect and the foregoing implementation manners, in some possible implementation manners, a portion of the valve disc portion conical surface located between adjacent exhaust passages is provided with an exhaust gas squeezing surface, and the exhaust gas squeezing surface is configured to guide a mixed gas flow around the exhaust gas squeezing portion to flow toward a cylinder head center line direction.
According to the technical scheme, on the basis of the air inlet gas extrusion part, the exhaust gas extrusion surface is formed at the part, located between the adjacent exhaust passages, of the conical surface of the valve disc part of the cylinder cover, so that the mixed gas near the exhaust gas extrusion surface can be guided to flow towards the center of the cylinder, turbulent energy in the cylinder of the engine is further improved, the combustion speed of the mixed gas is improved, and further the thermal efficiency of the engine is improved.
With reference to the first aspect and the foregoing implementation manners, in some possible implementation manners, an intake conduit provided on the cylinder head is further included;
the air inlet conduit is biased towards the air inlet passage, and the included angle between the first axis of the air inlet conduit and the central line of the cylinder cover is a 5 ，a 5 ≤20°。
According to the technical scheme, the air inlet guide pipe is arranged in the way of deviating from the air inlet channel, so that the conical surface structure of the valve disc part on the bottom surface of the cylinder cover can be effectively utilized to guide the flow of mixed gas, the tumble intensity in the engine cylinder is increased, the structural characteristics of the valve disc part and the air inlet channel wall surface are fully utilized, stronger air inlet capacity is formed, and the turbulent energy in the engine cylinder is further improved.
With reference to the first aspect and the foregoing implementation manners, in some possible implementation manners, an exhaust conduit provided on the cylinder head and a spark plug are further included;
the exhaust duct is arranged in a manner of deviating from the exhaust passage, the spark plug extends into the combustion chamber of the cylinder cover 1 and is arranged in a manner of deviating from the air inlet passage, and the included angles between the second axis of the exhaust duct and the third axis of the spark plug and the central line of the cylinder cover are respectively a 7 And a 6 Wherein a is 5 ≤a 7 ，0≤a 6 ≤a 5 ；
And/or the number of the groups of groups,
for the included angle a between the second air inlet extruding plane and the bottom surface of the cylinder cover 2 ，0.5a 5 ≤a 2 ≤2a 5 And an extension of the second intake squish plane intersects a bottom center of an electrode of the spark plug;
and/or the included angle between the exhaust gas squeezing surface and the bottom surface of the cylinder cover is a 8 ，a 5 ≤a 8 ≤2a 5 。
In the technical scheme, the exhaust guide pipe is arranged in a way of deviating from the exhaust passage, so that high-temperature waste gas in the combustion chamber in the engine cylinder can be conveniently and smoothly discharged; the spark plug is stretched into the combustion chamber of the cylinder cover and is biased to the air inlet passage, so that the electrode center of the spark plug is in a limited range, the electrode of the spark plug is effectively ensured to be arranged at a position with higher energy of a gas flow field of the mixed gas in the engine cylinder, the spark generated by the spark plug is convenient for igniting the mixed gas with higher energy, the flame is convenient to form, the flame is promoted to be rapidly spread to the periphery of the spark plug, and the combustion efficiency of the mixed gas is effectively improved; meanwhile, the distance from flame to the periphery of the combustion chamber is effectively reduced, and the possibility of knocking is reduced; in addition, the extension surface of the second air inlet gas extrusion plane is intersected with the center of the bottom surface of the electrode of the spark plug, so that more mixed gas can be gathered around the electrode of the spark plug, the transmission path of spark plug electric spark is reduced, the mixed gas can be conveniently and rapidly ignited, and the spark plug is further provided withThe combustion efficiency is improved. An included angle a between the air inlet and extruding part and the bottom surface of the cylinder cover 1 、a 2 、a 3 And a 4 Based on the exhaust gas extruding surface and the bottom surface of the cylinder cover 8 The engine cylinder is arranged in the limited engine cylinder, so that smoothness of flowing of the mixed gas flow in the combustion chamber of the cylinder cover can be ensured on the premise that the motion rule of the mixed gas flow in the engine cylinder is not influenced.
In a second aspect, the present application also provides an engine comprising a cylinder head assembly as described in any one of the first aspects above.
In a third aspect, the present application also provides a vehicle comprising the engine of the second aspect.
Drawings
FIG. 1 is a bottom view of a cylinder head assembly provided in an embodiment of the present application;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;
FIG. 3 is a cross-sectional view taken along line B-B in FIG. 1;
fig. 4 is an enlarged schematic view of the part i in fig. 3.
The reference numerals in the drawings are explained as follows:
1-a cylinder cover; 10-cylinder head center line;
11-an air inlet channel; 111-an air inlet and extrusion part; 1111—a first air intake squish plane; 1112-a second air inlet extrusion plane; 1113-a third air inlet extrusion plane; 1114-a fourth air inlet extrusion plane; 1115—a first arc surface; 1116-a second arc surface; 1117-a third arc surface; 1118—an extension surface;
12-an exhaust passage; 121-an exhaust gas extrusion surface;
2-an air intake duct; 21-a first axis;
3-an exhaust duct; 31-a second axis;
4-spark plug; 41-an electrode; 42-third axis.
Detailed Description
The technical solutions in the present application will be clearly and thoroughly described below with reference to the accompanying drawings. Wherein, in the description of the embodiments of the present application, "/" means or is meant unless otherwise indicated, for example, a/B may represent a or B: the text "and/or" is merely an association relation describing the associated object, and indicates that three relations may exist, for example, a and/or B may indicate: the three cases where a exists alone, a and B exist together, and B exists alone, and in addition, in the description of the embodiments of the present application, "plural" means two or more than two.
The terms "first," "second," and the like, are used below for descriptive purposes only and are not to be construed as implying or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature.
In the related art, the improvement of turbulence energy is generally achieved by improving the tumble ratio of an engine air inlet.
However, under the distribution and cylinder cover arrangement structure of the related engine, the turbulence energy is further improved by improving the tumble ratio of the air inlet channel, so that the difficulty of improving the thermal efficiency of the engine is high.
In order to solve the technical problems, embodiments of the present application provide a cylinder head assembly, an engine and a vehicle. A cylinder head assembly according to an embodiment of the present application will be described in detail with reference to the accompanying drawings.
Referring to fig. 1, fig. 1 is a bottom view of a cylinder head assembly according to an embodiment of the present disclosure.
First, a cylinder head assembly according to a first aspect of the present application includes a cylinder head 1, the cylinder head 1 including a valve disc conical surface formed in a pit structure at a bottom portion thereof, the valve disc conical surface being for constituting a combustion chamber of an engine together with an inner wall of a cylinder block of the engine and a top surface of a piston located in the cylinder block. Be equipped with intake duct 11 and exhaust duct 12 on the cylinder head 1, the bottom of intake duct 11 and exhaust duct 12 all extends to the valve disk portion conical surface, and this application intake duct 11 and exhaust duct 12 can all be provided with two, and wherein two intake ducts 11 are located one side of valve disk portion conical surface, and two exhaust ducts 12 are located the opposite side of valve disk portion conical surface, and the gas mixture gets into the combustion chamber through intake duct 11, and the tail gas that produces after the burning is discharged by exhaust duct 12.
Wherein, the wall surface of the valve disc portion conical surface between the adjacent intake passages 11 is formed with an intake air squeezing portion 111, and the intake air squeezing portion 111 is configured to be capable of guiding the flow of the mixture air entering the combustion chamber from the intake passage 11 toward the cylinder head center line 10. The cylinder head assembly further includes a spark plug 4 provided on the cylinder head 1, and the cylinder head 1 is further provided with a mounting hole penetrating the conical surface of the valve disc portion, and the spark plug 4 is mounted in the mounting hole. Wherein, the mounting hole is located between two intake ducts 11 and two exhaust ducts 12, and this application cylinder head central line 10 is the state that the acute angle intersects with the axis of mounting hole.
In the above technical scheme, the air inlet gas squeezing part 111 is formed at the part of the conical surface of the valve disc part of the cylinder cover 1 between the adjacent air inlet channels 11, and the direction of the mixed gas entering the combustion chamber through the air inlet channels 11 can be guided by the air squeezing part 111, so that the mixed gas flows towards the central line 10 direction of the cylinder cover to cause the flow of the mixed gas in the engine cylinder, and under the cooperation of the air inlet channels 11, the turbulence energy in the engine cylinder can be effectively improved, the combustion speed of the mixed gas is improved, and the thermal efficiency of the engine is further improved.
As shown in fig. 3 and 4, fig. 3 is a cross-sectional view taken along line B-B in fig. 1; fig. 4 is an enlarged schematic view of the part i in fig. 3.
In some embodiments of the present application, the intake squish section 111 includes, in order from bottom to top, a first intake squish plane 1111, a second intake squish plane 1112, a third intake squish plane 1113, and a fourth intake squish plane 1114;
the first air intake and extrusion plane 1111, the second air intake and extrusion plane 1112, the third air intake and extrusion plane 1113 and the fourth air intake and extrusion plane 1114 have included angles a with the bottom surface of the cylinder head 1 respectively 1 、a 2 、a 3 And a 4 Wherein, a is more than or equal to 70 degrees 1 ≤90°，2a 4 ≤a 3 ≤a 1 ，0.5a 2 ≤a 4 ≤2a 2 。
Wherein the first intake squish plane 1111 may guide the mixture around the cylinder to flow toward the center of the cylinder, the second intake squish plane 1112 may guide the mixture around the second intake squish plane 1112 to flow toward the piston combustion chamber, the third intake squish plane 1113 may guide the mixture around the third intake squish plane 1113 to flow toward the position of the ignition plug 4 at the center of the cylinder, and the fourth intake squish plane 1114 may guide the mixture near the fourth intake squish plane 1114 to flow toward the center of the cylinder head combustion chamber.
In the above technical solution, the first air intake and extrusion plane 1111, the second air intake and extrusion plane 1112, the third air intake and extrusion plane 1113 and the fourth air intake and extrusion plane 1114 are inclined at an angle a with respect to the bottom surface of the cylinder head 1 1 、a 2 、a 3 And a 4 The arrangement of the spark plug 4 in the above-defined range allows the mixture in the engine cylinder to be converged toward the center of the cylinder, and at the same time, allows more mixture to be gathered around the electrode 41 of the spark plug 4, reduces the transmission path of the spark plug 4, facilitates rapid ignition of the mixture, and further improves the combustion efficiency of the engine.
In some embodiments of the present application, the intake squish 111 further includes a transition curve;
the two adjacent air inlet and air extrusion planes are in smooth transition connection through a transition curved surface.
Wherein, between two adjacent intake extrusion planes refers to between the first intake extrusion plane 1111 and the second intake extrusion plane 1112, between the second intake extrusion plane 1112 and the third intake extrusion plane 1113, and between the third intake extrusion plane 1113 and the fourth intake extrusion plane 1114.
It is understood that the transition surface may be an arc surface or a combined surface comprising a plurality of arc surfaces of different curvatures. For example, referring to fig. 4, the transition surface may include a first arcuate surface 1115, a second arcuate surface 1116, and a third arcuate surface 1117. Two ends of the first arc surface 1115 are respectively connected with the first air inlet extrusion plane 1111 and the second air inlet extrusion plane 1112, and the concave surface of the first arc surface 1115 faces the bottom surface of the cylinder head 1; two ends of the second circular arc face 1116 are respectively connected with the second air inlet extruding plane 1112 and the third air inlet extruding plane 1113, and the concave surface of the second circular arc face 1116 faces away from the cylinderThe bottom surface of the cover 1; both ends of the third circular arc surface 1117 are respectively connected with the third intake squish plane 1113 and the fourth intake squish plane 1114, and the concave surface of the third circular arc surface 1117 faces the bottom surface of the cylinder head 1. Thus, smooth transition connection between two adjacent air inlet extrusion planes can be realized. In addition, in order to facilitate the manufacture and processing of the arc surfaces, when the radii of the first arc surface 1115, the second arc surface 1116 and the third arc surface 1117 are respectively r 1 、r 2 And r 3 In this case, the radius of the arc surface can be set to r 2 ＝r 3 ≥r 1 ≥2°。
According to the technical scheme, the transition curved surface is arranged between the two adjacent air inlet extrusion planes, so that the mixed gas flow can be guided to smoothly flow through the air inlet extrusion planes of the straight line section, turbulence is effectively reduced, and the fluidity separation of the mixed gas flow is reduced.
As shown in fig. 1, in some embodiments of the present application, the portion of the valve disc taper between adjacent exhaust passages 12 is provided with an exhaust squish face 121, the exhaust squish face 121 being configured to direct the flow of mixture gas around the exhaust squish toward the cylinder head centerline 10.
In the above technical solution, on the basis of the air inlet gas extrusion part 111, an exhaust gas extrusion surface 121 is formed at a portion of the conical surface of the valve disc part of the cylinder head 1 between the adjacent exhaust passages 12, so that the mixed gas near the exhaust gas extrusion surface 121 can be guided to flow towards the center of the cylinder, the turbulence energy in the cylinder of the engine is further improved, the combustion speed of the mixed gas is improved, and the thermal efficiency of the engine is further improved.
As shown in fig. 2, fig. 2 is a cross-sectional view taken along line A-A in fig. 1.
In some embodiments of the present application, an intake conduit 2 provided on the cylinder head 1 is also included.
The air inlet conduit 2 is arranged towards the air inlet channel 11, and the included angle between the first axis 21 of the air inlet conduit 2 and the central line 10 of the cylinder cover is a 5 ，a 5 ≤20°。
The intake duct 2 is a basic component of a valve train, and a valve of the switching intake duct 11 is attached to the intake duct 2 so as to be capable of telescopic movement along the axis of the intake duct 2.
In the above technical scheme, through setting the air inlet conduit 2 towards the air inlet channel 11, the conical surface structure of the valve disc part of the bottom surface of the cylinder cover 1 can be effectively utilized to guide the flow of the mixed gas, the rolling flow intensity in the cylinder of the engine is increased, the structural characteristics of the valve disc part and the wall surface of the air inlet channel 11 are fully utilized, the stronger air inlet capability is formed, and the turbulent energy in the cylinder of the engine is further improved.
As shown in fig. 2, in some embodiments of the present application, an exhaust gas conduit 3 provided on the cylinder head 1 and a spark plug 4 are also included.
The exhaust duct 3 is arranged in a manner of being biased towards the exhaust passage 12, the spark plug 4 extends into the combustion chamber of the cylinder head 1 and is arranged in a manner of being biased towards the air inlet passage 11, and the included angles between the second axis 31 of the exhaust duct 3 and the third axis 42 of the spark plug 4 and the cylinder head central line 10 are respectively a 7 And a 6 Wherein a is 5 ≤a 7 ，0≤a 6 ≤a 5 。
And/or the number of the groups of groups,
for the included angle a of the second intake extruding plane 1112 and the bottom surface of the cylinder cover 1 2 ，0.5a 5 ≤a 2 ≤2a 5 And an extension 1118 of the second intake squish plane 1112 intersects the center of the bottom surface of the electrode 41 of the spark plug 4.
The exhaust duct 3 is also a basic component of a valve train, and a valve of the switching exhaust duct 12 is mounted on the exhaust duct 3 in a manner of being telescopically movable along the axis of the exhaust duct 3. The third axis 42 of the spark plug 4 is at an angle a to the cylinder head centerline 10 6 May be 10.
In the technical scheme, the exhaust duct 3 is arranged in a way of being deviated to the exhaust passage 12, so that high-temperature exhaust gas in a combustion chamber in an engine cylinder can be conveniently and smoothly discharged; the spark plug 4 stretches into the combustion chamber of the cylinder cover 1 and is arranged in a deflection way to the air inlet channel 11, so that the center of the electrode 41 of the spark plug 4 is in a limited range, the electrode 41 of the spark plug 4 is effectively ensured to be arranged at a position with higher energy of a gas flow field of the mixed gas in an engine cylinder, the spark generated by the spark plug 4 is convenient for igniting the mixed gas with higher energy, flame is convenient to form, the flame is promoted to be rapidly spread to the periphery of the spark plug 4, and the combustion efficiency of the mixed gas is effectively improved; meanwhile, the distance from flame to the periphery of the combustion chamber is effectively reduced, and the possibility of knocking is reduced; in addition, the extension surface 1118 of the second air inlet extruding plane 1112 intersects with the center of the bottom surface of the electrode 41 of the spark plug 4, so that more mixed air can gather around the electrode 41 of the spark plug 4, the path of electric spark transmission of the spark plug 4 is reduced, the mixed air can be conveniently and rapidly ignited, and the combustion efficiency is further improved.
As shown in fig. 4, in some embodiments of the present application, the exhaust squish face 121 forms an angle a with the bottom surface of the cylinder head 1 8 ，a 5 ≤a 8 ≤2a 5 。
In the above-described embodiment, the air intake and squeeze portion 111 forms an angle a with the bottom surface of the cylinder head 1 1 、a 2 、a 3 And a 4 By the included angle a between the exhaust gas extruding surface 121 and the bottom surface of the cylinder head 1 8 The arrangement in the limited range can ensure the smoothness of the flow of the mixed gas flow in the combustion chamber of the cylinder cover under the premise of not influencing the movement rule of the mixed gas flow in the cylinder of the engine.
Next, a second aspect of the present application also proposes an engine, the cylinder head assembly of any one of the first aspects of the vehicle.
The engine provided by the application has all the beneficial effects of the cylinder head assembly due to the cylinder head assembly of the embodiment. The cylinder head assembly is described in detail above and will not be described again here.
Finally, a third aspect of the present application also proposes a vehicle comprising an engine according to the embodiment of the second aspect described above.
The vehicle provided by the application has all the beneficial effects of the cylinder head assembly because the engine is provided with the engine of the embodiment and the engine comprises the cylinder head assembly of the embodiment. The cylinder head assembly is described in detail above and will not be described in detail herein.
The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present application, it should be understood that, if there is an azimuth or positional relationship indicated by terms such as "upper", "lower", "left", "right", etc., based on the azimuth or positional relationship shown in the drawings, this is for convenience of description and simplification of the description, but does not indicate or imply that the apparatus or element to be referred must have a specific azimuth, be constructed and operated in a specific azimuth, and thus terms describing the positional relationship in the drawings are merely used for illustration and are not to be construed as limitations of the present patent, and that the specific meaning of the terms described above may be understood by those of ordinary skill in the art according to the specific circumstances.
The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. A cylinder head assembly, characterized by comprising a cylinder head (1), the cylinder head (1) being provided with at least two intake ducts (11) and at least two exhaust ducts (12), the cylinder head (1) comprising a valve disc cone at its bottom, the intake ducts (11) and the exhaust ducts (12) extending to the valve disc cone for forming together with the inner wall of a cylinder block and the top surface of a piston located in the cylinder block a combustion chamber of an engine;
the part of the conical surface of the valve disc part, which is positioned between the adjacent air inlet channels (11), is provided with an air inlet extruding part (111), and the air inlet extruding part (111) is configured to guide the mixed air flow entering the combustion chamber from the air inlet channels (11) to flow towards the central line (10) of the cylinder cover.
2. The cylinder head assembly of claim 1, wherein the intake squish section (111) comprises, in order from bottom to top, a first intake squish plane (1111), a second intake squish plane (1112), a third intake squish plane (1113), and a fourth intake squish plane (1114);
the first air inlet extrusion plane (1111), the second air inlet extrusion plane (1112), the third air inlet extrusion plane (1113) and the fourth air inlet extrusion plane (1114) have included angles a with the bottom surface of the cylinder head (1) respectively 1 、a 2 、a 3 And a 4 Wherein, a is more than or equal to 70 degrees 1 ≤90°，2a 4 ≤a 3 ≤a 1 ，0.5a 2 ≤a 4 ≤2a 2 。
3. The cylinder head assembly of claim 2, wherein the intake squish section (111) further comprises a transition curve;
and two adjacent air inlet and air extrusion planes are in smooth transition connection through the transition curved surface.
4. The cylinder head assembly of claim 3, wherein the transition surface comprises:
the two ends of the first arc surface (1115) are respectively connected with the first air inlet extrusion plane (1111) and the second air inlet extrusion plane (1112), and the concave surface of the first arc surface (1115) faces the bottom surface of the cylinder cover (1);
the two ends of the second arc surface (1116) are respectively connected with the second air inlet extrusion plane (1112) and the third air inlet extrusion plane (1113), and the concave surface of the second arc surface (1116) is opposite to the bottom surface of the cylinder cover (1);
and two ends of the third arc surface (1117) are respectively connected with the third air inlet extrusion plane (1113) and the fourth air inlet extrusion plane (1114), and the concave surface of the third arc surface (1117) faces the bottom surface of the cylinder cover (1).
5. The cylinder head assembly of claim 4, wherein the first (1115), second (1116) and third (1117) arcuate surfaces each have a radius r 1 、r 2 And r 3 Wherein r is 2 ＝r 3 ≥r 1 ≥2°。
6. The cylinder head assembly according to any one of claims 2 to 5, characterized in that a portion of the valve disc conical surface located between adjacent exhaust passages (12) is provided with an exhaust squish face (121), the exhaust squish face (121) being configured to direct a flow of mixture gas around the exhaust squish toward a cylinder head centerline (10).
7. The cylinder head assembly according to claim 6, further comprising an intake conduit (2) provided on the cylinder head (1);
the air inlet conduit (2) is arranged towards the air inlet channel (11), and the included angle between the first axis (21) of the air inlet conduit (2) and the central line (10) of the cylinder cover is a 5 ，a 5 ≤20°。
8. The cylinder head assembly according to claim 7, further comprising an exhaust conduit (3) and a spark plug (4) provided on the cylinder head (1);
the exhaust duct (3) is arranged in a manner of being biased towards the exhaust passage (12), the spark plug (4) extends into the combustion chamber of the cylinder head 1 and is arranged in a manner of being biased towards the air inlet passage (11), and the included angles of the second axis (31) of the exhaust duct (3) and the third axis (42) of the spark plug (4) and the cylinder head central line (10) are respectively a 7 And a 6 Wherein a is 5 ≤a 7 ，0≤a 6 ≤a 5 ；
And/or the number of the groups of groups,
for the included angle a of the second air inlet extruding plane (1112) and the bottom surface of the cylinder cover (1) 2 ，0.5a 5 ≤a 2 ≤2a 5 And an extension surface (1118) of the second intake squish plane (1112) intersects a bottom center of an electrode (41) of the spark plug (4);
and/or the included angle between the exhaust gas extruding surface (121) and the bottom surface of the cylinder cover (1) is a 8 ，a 5 ≤a 8 ≤2a 5 。
9. An engine comprising the cylinder head assembly of any one of claims 1 to 8.
10. A vehicle comprising the engine of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310369160.2A CN116480484A (en) | 2023-04-07 | 2023-04-07 | Cylinder head assembly, engine and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310369160.2A CN116480484A (en) | 2023-04-07 | 2023-04-07 | Cylinder head assembly, engine and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116480484A true CN116480484A (en) | 2023-07-25 |
Family
ID=87211237
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310369160.2A Pending CN116480484A (en) | 2023-04-07 | 2023-04-07 | Cylinder head assembly, engine and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116480484A (en) |
-
2023
- 2023-04-07 CN CN202310369160.2A patent/CN116480484A/en active Pending
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