CN105612337A - Cylinder head for internal combustion engine - Google Patents
Cylinder head for internal combustion engine Download PDFInfo
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- CN105612337A CN105612337A CN201580002188.6A CN201580002188A CN105612337A CN 105612337 A CN105612337 A CN 105612337A CN 201580002188 A CN201580002188 A CN 201580002188A CN 105612337 A CN105612337 A CN 105612337A
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- exhaust outlet
- cylinder
- exhaust
- linearity
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/08—Other arrangements or adaptations of exhaust conduits
- F01N13/10—Other arrangements or adaptations of exhaust conduits of exhaust manifolds
- F01N13/105—Other arrangements or adaptations of exhaust conduits of exhaust manifolds having the form of a chamber directly connected to the cylinder head, e.g. without having tubes connected between cylinder head and chamber
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/04—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust using liquids
- F01N3/043—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust using liquids without contact between liquid and exhaust gases
- F01N3/046—Exhaust manifolds with cooling jacket
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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
- F02F1/26—Cylinder heads having cooling means
- F02F1/36—Cylinder heads having cooling means for liquid cooling
- F02F1/40—Cylinder heads having cooling means for liquid cooling cylinder heads with means for directing, guiding, or distributing liquid stream
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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
- F02F1/4264—Shape or arrangement of intake or exhaust channels in cylinder heads of exhaust channels
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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
A linear exhaust port 13 is formed so that the passage length thereof becomes shorter than the passage length of a curved exhaust port, and the inner diameter of the linear exhaust port gradually increases from a combustion chamber 7B toward an exhaust collection part 14. The bottom surface of the exhaust collection part 14 is set as a reference surface 18, and when a virtual extension surface 19 formed by extending the reference surface 18 toward the upstream end side of the linear exhaust port 13 is provided, a bulging part 20 that bulges out above the virtual extension surface 19 is formed on the bottom surface of the linear exhaust port 13.
Description
Technical field
The present invention relates to the cylinder head of internal combustion engine, particularly, relate to the multiple exhaust outlets and the set that are communicated with combustion chamberThe cylinder head of the internal combustion engine that the exhaust set portion of multiple exhaust outlets forms as one.
Background technology
The internal combustion engine carrying in the vehicles such as automobile possesses cylinder head. As existing this cylinder head, known will with burningThe cylinder head that the exhaust set portion of multiple exhaust outlets that chamber is communicated with and the multiple exhaust outlets of set forms as one is (for example,, with reference to specialProfit document 1).
Multiple exhaust outlets of this cylinder head are set to along bank of cylinder direction, each exhaust outlet be formed as internal diameter from combustion chamber toExhaust set portion becomes large gradually.
In addition, be formed at the central exhaust outlet of bank of cylinder direction and exhaust set portion in the side that is orthogonal to bank of cylinder directionTo relatively, be formed at the path-length and the exhaust of both sides that is formed at bank of cylinder direction of the central exhaust outlet of bank of cylinder directionThe path-length of mouth is compared, and forms shortlyer.
In addition, each exhaust outlet has from combustion chamber bending upward curved bottom surface and tilts obliquely upward from curved bottom surfaceRamped bottom surface, from combustion chamber discharge waste gas points upwards and be gathered in exhaust set portion.
Prior art document
Patent documentation
Patent documentation 1: JP 2000-161132 communique
Summary of the invention
The problem that invention will solve
In the cylinder head of this existing internal combustion engine, be formed at the path-length of the exhaust outlet of the both sides of bank of cylinder directionCompared with being formed at the path-length of central exhaust outlet of bank of cylinder direction, form longlyer, therefore, the path face of exhaust outletAmass and can sharply not expand. Thus, the waste gas that is discharged to this exhaust outlet from combustion chamber the process that arrives exhaust set portion easilyBe rectified.
And on the other hand, be formed at bank of cylinder direction central exhaust outlet path-length be formed at bank of cylinder directionThe path-length of exhaust outlet of both sides compare, form shortlyer, therefore, the area of passage of this exhaust outlet can sharply expand.
Thus, the waste gas that is discharged to this exhaust outlet is difficult to be rectified in the process that arrives exhaust set portion, sometimes rowOn the bottom surface of gas port, waste gas can become turbulent flow or stagnate. Therefore, have following may: be discharged to exhaust outlet from combustion chamberThe back pressure of waste gas uprises, and the discharging performance of waste gas declines.
The present invention is conceived to above-mentioned such problem and completes, and its object is, a kind of cylinder of internal combustion engine is providedLid, it can prevent that the back pressure that is discharged to the waste gas of linearity exhaust outlet from combustion chamber from uprising, and can prevent the discharge of waste gasCan decline.
For the scheme of dealing with problems
Mode of the present invention is cylinder head, has: combustion chamber, it is arranged at cylinder block upper of the internal combustion engine with cylinderPortion, has multiple along bank of cylinder direction; And exhaust outlet, its be communicated with combustion chamber and have multiple, the visual exhaust from topMouthful situation under, multiple exhaust outlets comprise: bending exhaust outlet, itself and cylinder head form as one, with the arrangement of combustion chamberThe orthogonal direction of direction is extended the bending of backward bank of cylinder direction; Linearity exhaust outlet, itself and cylinder head form as one, and logicalThe path-length of road Length Ratio bending exhaust outlet forms shortly, is extending with the orthogonal direction of bank of cylinder direction; And exhaustSet portion, itself and cylinder head form as one, the downstream portion of set bending exhaust outlet and linearity exhaust outlet, linearity exhaustMouth is communicated with combustion chamber and has the curved bottom surface of bending and the inclination of tilting obliquely upward from curved bottom surface upward from combustion chamberBottom surface, more extends its internal diameter to exhaust set portion from combustion chamber larger, taking the bottom surface of exhaust set portion as datum level, and will be along baseThe face of the accurate distolateral extension in upstream facing to linearity exhaust outlet is made as in the situation of virtual elongated surfaces, at linearity exhaust outletOn bottom surface, be formed with the bellying bloating upward than virtual elongated surfaces.
Invention effect
Like this, according to above-mentioned mode, path-length form shortly than the path-length of bending exhaust outlet and from combustionBurn chamber and more extend in the larger linearity exhaust outlet of internal diameter to exhaust set portion, taking the bottom surface of exhaust set portion as datum level, willBe made as towards the face of the distolateral extension in the upstream of linearity exhaust outlet in the situation of virtual elongated surfaces along datum level, arrange at linearityOn the bottom surface of gas port, be formed with the bellying bloating upward than virtual elongated surfaces.
Thus, can prevent from sharply expanding to the area of passage of exhaust set portion from the end, upstream of linearity exhaust outlet.Therefore, even send out in curved bottom surface contact on one side the mobile waste gas in one side with the curved bottom surface of linearity exhaust outlet from combustion chamberGive birth in situation about peeling off, also can after peeling off, in bellying, will the turbulent flow of waste gas or the feelings of stagnating occur immediatelyCondition is eliminated.
Therefore, can prevent from the turbulent flow of waste gas occurring in the ramped bottom surface of linearity exhaust outlet or stagnating, can be by uselessAfter gas rectification, make it flow to exhaust set portion. Consequently, can prevent that the back pressure of waste gas in linearity exhaust outlet from uprising, energyThe discharging performance that enough prevents waste gas declines.
Brief description of the drawings
Fig. 1 is the front view of the engine that comprises the related cylinder head of embodiments of the present invention.
Fig. 2 is the top view of the engine that comprises the related cylinder head of embodiments of the present invention.
Fig. 3 be Fig. 2 III-III direction to looking sectional view.
Fig. 4 be Fig. 1 IV-IV direction to looking sectional view.
Fig. 5 is the front view of the related cylinder head of embodiments of the present invention.
Fig. 6 be Fig. 4 VI-VI direction to looking sectional view.
Fig. 7 is the mobile figure that the waste gas in the exhaust outlet that is not formed with bellying is shown.
Fig. 8 is illustrated in giving up in the exhaust outlet that is formed with bellying in the related cylinder head of embodiments of the present inventionThe mobile figure of gas.
Detailed description of the invention
The embodiment of the cylinder head of internal combustion engine involved in the present invention is described with accompanying drawing below.
As shown in Figure 1, possess as the engine 1 of the internal combustion engine carrying in the vehicles such as automobile: cylinder block 2; Cylinder head 3,It is arranged on the top of cylinder block 2; Valve mechanism cover 4, it is arranged on the top of cylinder head 3; And oil sump 5, it is arranged on gasThe bottom of cylinder body 2, oil in reserve.
As shown in phantom in Figure 2, in cylinder block 2, along overall width direction (left and right directions) be provided with multiple cylinder 6A～6C. Not shown piston is accommodated in cylinder 6A～6C and lifting freely.
As shown in Figure 4, in the bottom of cylinder head 3, as shown in the circle of dotted line, be formed with combustion chamber 7A～7C, combustion chamber 7A～7C is formed as being communicated with along the orientation of cylinder 6A～6C and with cylinder 6A～6C. At this, in Fig. 3, combustion chamber 7B shapeBecome in the bottom of cylinder head 3, combustion chamber 7A, 7C are also formed on the bottom of cylinder head 3 with the shape identical with combustion chamber 7B.
As shown in Figure 2, the rear portion of cylinder head 3 is connected with inlet manifold 8, and the air of suction never illustrated air inlet pipe importsInlet manifold 8. As shown in Figure 4, in cylinder head 3, be formed with multiple air inlets 9. The air sucking imports by inlet manifold 8Air inlet 9.
Air inlet 9 is communicated with cylinder 6A～6C by combustion chamber 7A～7C respectively, and the air importing after air inlet 9 passes through combustionBurn chamber 7A～7C and import cylinder 6A～6C.
As shown in Figure 4, in cylinder head 3, be formed with multiple exhaust outlets 10. Each exhaust outlet 10 is respectively by combustion chamber 7A～7C is communicated with cylinder 6A～6C.
As shown in Figure 4, from the situation of the visual exhaust outlet 10 in top, exhaust outlet 10 comprises: bending exhaust outlet 11,12,It is to extend the orientation of backward cylinder 6A～6C curved with the orthogonal direction (towards front) of the orientation of cylinder 6A～6CBent; Linearity exhaust outlet 13, its path-length forms shortly than the path-length of bending exhaust outlet 11,12, with cylinder 6AThe orthogonal direction of orientation (left and right directions) of～6C is extended; And exhaust set portion 14, its set bending exhaust outlet 11,12 and the downstream portion of linearity exhaust outlet 13. At this, the orientation of cylinder 6A～6C is equivalent to bank of cylinder direction of the present invention.
These bending exhaust outlets 11,12, linearity exhaust outlet 13 and exhaust set portion 14 are formed at cylinder head 3. As Fig. 5Shown in, before cylinder head 3, be formed with peristome 14a. Peristome 14a forms the downstream of bending exhaust outlet 11.
As shown in Figure 5, from watching the situation of cylinder head 3 with the orthogonal direction (front) of left and right directions, linearity exhaustMouthfuls 13 to extend to exhaust set portion 14 with the overlapping mode of peristome 14a from combustion chamber 7B. Therefore, linearity exhaust outlet 13Total length can form shortly than the total length of bending exhaust outlet 11,12.
As shown in Figure 1 and Figure 2, turbocharger 15 is installed before cylinder head 3. The inside of turbocharger 15 withPeristome 14a shown in Fig. 4 is communicated with. As depicted in figs. 1 and 2, catalytic converter 17 is connected to turbocharging via blast pipe 16Device 15.
As shown in Figure 4, in the engine 1 of present embodiment, the waste gas of discharging from combustion chamber 7A～7C passes through bendingExhaust outlet 11,12 and linearity exhaust outlet 13 are discharged to exhaust set portion 14 and set in exhaust set portion 14.
A part for waste gas in exhaust set portion 14 after set is imported into the not shown turbine of turbocharger 15And turbine is rotated. In addition, remaining waste gas imports catalytic converter 17 by blast pipe 16 and catalyzed converter 17 purifies,Then the not shown blast pipe of the downstream by being connected in catalytic converter 17 is discharged in atmosphere.
As shown in Fig. 4, Fig. 6, linearity exhaust outlet 13 is communicated with combustion chamber 7B, and has: curved bottom surface 13a, it is from combustionBurn chamber 7B bending upward; And ramped bottom surface 13b, it tilts obliquely upward from curved bottom surface 13a. Linearity exhaust outlet 13 isMore extend its internal diameter to exhaust set portion 14 from combustion chamber 7B larger.
As shown in Figure 4, bending exhaust outlet 11,12 is communicated with combustion chamber 7A, 7C, and has: curved bottom surface 11a,12a, it is bending upward from combustion chamber 7A, 7C; And ramped bottom surface 11b, 12b, it is from curved bottom surface 11a, 12a obliquely upwardTilt. Bending exhaust outlet the 11, the 12nd, more extends its internal diameter to exhaust set portion 14 from combustion chamber 7A, 7C larger.
As shown in Figure 6, in linearity exhaust outlet 13, using the bottom surface of exhaust set portion 14 as datum level 18. Will be alongDatum level 18 is made as virtual elongated surfaces 19 towards the face of the distolateral extension in the upstream of linearity exhaust outlet 13. In the present embodiment,On the bottom surface of linearity exhaust outlet 13, be formed with the bellying 20 bloating upward than virtual elongated surfaces 19.
Bellying 20 be formed in curved bottom surface 13a be positioned at compared with virtual elongated surfaces 19 top part from topThe 20a of portion is to the region between the bottom surface of exhaust set portion 14. , the curved bottom surface 13a of present embodiment has bellying 20. ?This, in Fig. 6, illustrate the scope that forms bellying 20 with Reference numeral 20A. In addition, so-called upstream and downstream, refers to waste gasThe upstream of mobile direction, downstream.
As shown in Figure 4, be formed near the combustion in orientation one end (right part) of the cylinder 6A～6C in cylinder head 3Burn chamber 7A and form an end side combusion chamber of the present invention, be formed on the other end (left part) of the orientation of cylinder 6A～6CCombustion chamber 7C form the other end of the present invention side combusion chamber. In addition, be formed on the combustion between combustion chamber 7A and combustion chamber 7CBurn chamber 7B and form intermediate combustion of the present invention chamber.
Like this, the linearity exhaust that the cylinder head 3 of present embodiment is extended at the combustion chamber 7B from as intermediate combustion chamberIn mouth 13, form bellying 20.
As shown in Fig. 3, Fig. 6, in lower side and the upper side difference of bending exhaust outlet 11,12 and linearity exhaust outlet 13Be formed with water jacket 21A～21C, 22A～22C. The waste gas G of bending exhaust outlet 11,12 and linearity exhaust outlet 13 of flowing through is flowedCooling water W through water jacket 21A～21C, 22A～22C is cooling.
As shown in Figure 3, on the composition surface 23 of the cylinder block 2 in cylinder head 3, be formed with cooling water introducing port 24.
Water jacket 21A～the 21C of cooling water introducing port 24 and cylinder head 3 and be formed at the water jacket 25A～25C of cylinder block 2Be communicated with. Cooling water introducing port 24 makes the cooling water of discharging from water jacket 25A～25C flow into water jacket 21A～21C.
As shown in Figure 3, the cooling water flowing into after water jacket 21A～21C imports water jacket 22A～22C from water jacket 21A～21C.
As shown in Figure 6, cooling water introducing port 24 is configured to bellying overlapping in the short transverse of engine 1. CoolingWater introducing port 24 is in the lower opening of bellying 20. Flow into cooling water and the bellying 20 of water jacket 21B from cooling water introducing port 24Bottom direct collision.
As shown in Figure 3, the height and position T1 of the bottom surface of the linearity exhaust outlet 13 in the short transverse of engine 1 is higher than sending outThe height and position T2 of the bottom surface of the bending exhaust outlet 11,12 in the short transverse of motivation 1.
Then, illustration.
In the cylinder head 3 of present embodiment, from the situation of the visual exhaust outlet 10 in top, exhaust outlet 10 possesses: bendingShape exhaust outlet 11,12, its after extending with the orthogonal direction of the orientation of cylinder 6A～6C to the arrangement side of cylinder 6A～6CTo bending; Linearity exhaust outlet 13, its path-length forms shortly than the path-length of bending exhaust outlet 11,12, with gasThe orthogonal direction of orientation of cylinder 6A～6C is extended; And exhaust set portion 14, its set bending exhaust outlet 11,12 and straightThe downstream portion of wire exhaust outlet 13.
At this, the area of passage of the bending exhaust outlet 11,12 that path-length is grown can sharply not expand. Therefore, from combustionThe waste gas that burning chamber 7A, 7C are discharged to bending exhaust outlet 11,12 is easily rectified in the process that arrives exhaust set portion 14.
And on the other hand, the area of passage of the shorter linearity exhaust outlet 13 of path-length can sharply expand, therefore, from combustionThe waste gas that burning chamber 7B is discharged to linearity exhaust outlet 13 is difficult to be rectified in the process that arrives exhaust set portion 14.
For example, as shown in Figure 7, prepare not to be formed with the linearity exhaust outlet 31 of bellying 20. This linearity exhaust of flowing throughMouthfuls 31 waste gas G1 is becoming turbulent flow or stopping as shown by arrow A like that on the bottom surface of linearity exhaust outlet 31 sometimesStagnant. Thus, have following possibility: the back pressure that is discharged to the waste gas of linearity exhaust outlet 31 from combustion chamber uprises, the discharge of waste gasHydraulic performance decline.
And on the other hand, in the present embodiment, the path-length of linearity exhaust outlet 31 is than bending exhaust outlet 11,12Path-length form shortly. Along with going to exhaust set portion 14 from combustion chamber 7B, internal diameter expands gradually. In present embodimentIn, in the bottom surface taking exhaust set portion 14 as datum level 18 is provided with along datum level 18 upper towards linearity exhaust outlet 13Swim in the situation of the virtual elongated surfaces 19 that distolateral extension forms, on the bottom surface of linearity exhaust outlet 13, formed than virtual prolongationThe bellying 20 that face 19 bloats upward.
Thus, in the present embodiment, can prevent from the end, upstream of linearity exhaust outlet 13 to exhaust set portion 14The area of passage sharply expand. Therefore, even contacting with the curved bottom surface 13a of linearity exhaust outlet 13 on one side from combustion chamber 7BMobile waste gas, in the situation that curved bottom surface 13a has occurred to peel off, also can bloat immediately after peeling off on one sideIn portion 20, the situation that the turbulent flow of waste gas occurs or stagnate is eliminated.
Therefore, can prevent that at the ramped bottom surface 13b of linearity exhaust outlet 13 be the turbulent flow that waste gas occurs in bellying 20Or stagnate, can will after waste gas rectification, make it flow to exhaust set portion 14. Consequently, can prevent at linearity exhaust outlet 13The back pressure of middle waste gas uprises, and can prevent that the discharging performance of waste gas from declining.
Fig. 8 be illustrated in the bellying 20 of linearity exhaust outlet 13, eliminated the situation that the turbulent flow of waste gas occurs or stagnate andThe smooth and easy mobile state of waste gas G2.
In addition, according to the cylinder head 3 of present embodiment, under bending exhaust outlet 11,12 and linearity exhaust outlet 13Side's side is formed with the water jacket 21A～21C that flows into cooling water from cylinder block 2.
Thus, can make the volume of water jacket 21A～21C increase this part the amount of thickness of bellying 20, can make moreCooling water flow lead to water jacket 21A～21C. Therefore, can improve the cooling of linearity exhaust outlet 13.
The excessive temperature that therefore, can prevent waste gas in exhaust set portion 14 rises. In addition, can also be by cylinderCover 3 coolingly, therefore, can prevent that cylinder head 3 is deteriorated, extend the life-span of cylinder head 3.
In addition, on the composition surface 23 of the cylinder block 2 in cylinder head 3, be formed with from cylinder block 2 and import the cooling of cooling waterWater introducing port 24, and make cooling water introducing port 24 overlapping and at bellying 20 with bellying 20 in the short transverse of engine 1Lower opening.
Thus, can make the cooling water of the low temperature that flows into cylinder head 3 from cylinder block 2 by cooling water introducing port 24 and bloatThe bottom direct collision of portion 20. Therefore, can more effectively improve the cooling of linearity exhaust outlet 13.
In addition, according to the cylinder head 3 of present embodiment, make bellying 20 be formed at prolonging with virtual in curved bottom surface 13aLong face 19 compare above the bottom surface from upper portion 20a to exhaust set portion 14 region. Thus, can prevent fromCurved bottom surface 13a sharply expands to the area of passage of the linearity exhaust outlet 13 between exhaust set portion 14.
Therefore, can prevent from occurring the turbulent flow of waste gas or stagnate in the bellying 20 of linearity exhaust outlet 13, can be byAfter waste gas rectification, make it flow to exhaust set portion 14. In addition, can also more effectively increase the volume of water jacket 21B, make moreMany cooling waters circulate in water jacket 21B. Therefore, can more effectively improve the cooling of linearity exhaust outlet 13.
In addition, according to the cylinder head 3 of present embodiment, be formed at the orientation one end (right-hand member of cylinder 6A～6CPortion) combustion chamber 7A and be formed between the combustion chamber 7C of orientation the other end (left part) of cylinder 6A～6C and form combustionBurn chamber 7B, the linearity exhaust outlet 13 extending from combustion chamber 7B, formed bellying 20.
Thus, can make the height and position T1 of bottom surface of the linearity exhaust outlet 13 in the short transverse of engine 1 than sending outThe height and position T2 of the bottom surface of the bending exhaust outlet 11,12 in the short transverse of motivation 1 exceeds this portion of thickness of bellying 20The amount of dividing.
Therefore, can make the area of passage of linearity exhaust outlet 13 be less than the area of passage of bending exhaust outlet 11,12. CauseThis, can prevent from occurring the turbulent flow of waste gas in the bellying 20 of linearity exhaust outlet 13 or stagnate and will after waste gas rectification, make itFlow to exhaust set portion 14.
In addition, the bending exhaust outlet 11,12 that utilizes the area of passage can sharply not expand, needn't reduce bending rowThe area of passage of gas port 11,12 just can be by waste gas rectification.
Therefore, can prevent reliably that back pressure uprises in bending exhaust outlet 11,12.
In addition, according to the cylinder head 3 of present embodiment, can utilize cooling water cooling owing to being formed on bending exhaustBetween mouthfuls 11,12 and the temperature linearity exhaust outlet 13 higher than bending exhaust outlet 11,12. In addition, can also make water jacketThe volume of 21B increases this part the amount of thickness of the bellying 20 that is formed at linearity exhaust outlet 13, can make more coolingWater circulates in water jacket 21B, can improve the cooling of linearity exhaust outlet 13.
In addition, as mentioned above, cylinder head 3 is orthogonal and along cylinder 6A～6C's in the orientation of cylinder 6A～6CIn the situation that the section of orientation cuts off, the height position of the bottom surface of the linearity exhaust outlet 13 in the short transverse of engine 1Put the height and position T2 of T1 higher than the bottom surface of the bending exhaust outlet 11,12 in the short transverse of engine 1.
Thus, as shown in Figure 3, can make the clearance t 1 of the short transverse of water jacket 21B be greater than the height side of water jacket 21A, 21CTo clearance t 2. Therefore, can increase the volume of water jacket 21B, make it be greater than the volume of water jacket 21A, 21C. In addition, in this enforcementIn the cylinder head 2 of mode, in the gamut of the length direction of ramped bottom surface 13b, form bellying 20, but bellying 20Also can be the certain scope that is formed at the length direction of ramped bottom surface 13b from curved bottom surface 13a.
Although disclose embodiments of the present invention, clearly, those skilled in the art can not depart from the present inventionScope and changed. Appended claim is intended to comprise all this correction and equivalent.
Description of reference numerals
1 engine (internal combustion engine)
2 cylinder block
3 cylinder head
6A～6C cylinder
7A combustion chamber (an end side combusion chamber)
7B combustion chamber (intermediate combustion chamber)
7C combustion chamber (the other end side combusion chamber)
10 exhaust outlets
11,12 bending exhaust outlets
13 linearity exhaust outlets
13a curved bottom surface
13b ramped bottom surface
14 exhaust set portions
18 datum levels
19 virtual elongated surfaces
20 bellyings
23 composition surfaces
21B water jacket
24 cooling water introducing ports.
Claims (5)
1. a cylinder head for internal combustion engine, has:
Combustion chamber, it is arranged at the top of the cylinder block of the internal combustion engine with cylinder, has multiple along bank of cylinder direction; ExhaustMouthful, it is communicated with above-mentioned combustion chamber and has multiplely, it is characterized in that,
From the situation of the visual above-mentioned exhaust outlet in top, multiple above-mentioned exhaust outlets comprise: bending exhaust outlet, itself and above-mentioned cylinderLid forms as one, after extending with the orthogonal direction of above-mentioned bank of cylinder direction to the bending of above-mentioned bank of cylinder direction; Linearity rowGas port, itself and above-mentioned cylinder head form as one, and path-length forms than the path-length of above-mentioned bending exhaust outletShort, extending with the orthogonal direction of above-mentioned bank of cylinder direction; And exhaust set portion, itself and above-mentioned cylinder head form as one,Gather the downstream portion of above-mentioned bending exhaust outlet and above-mentioned linearity exhaust outlet,
Above-mentioned linearity exhaust outlet be communicated with above-mentioned combustion chamber and there is from above-mentioned combustion chamber bending upward curved bottom surface and fromThe ramped bottom surface that above-mentioned curved bottom surface tilts obliquely upward, more extends its internal diameter more to above-mentioned exhaust set portion from above-mentioned combustion chamberGreatly,
Taking the bottom surface of above-mentioned exhaust set portion as datum level, by the upstream facing to above-mentioned linearity exhaust outlet along said referenceThe face of distolateral extension is set as in the situation of virtual elongated surfaces, is formed with more virtual than above-mentioned on the bottom surface of above-mentioned linearity exhaust outletThe bellying that elongated surfaces bloats upward.
2. the cylinder head of internal combustion engine according to claim 1, is characterized in that,
Lower side at above-mentioned bending exhaust outlet and above-mentioned linearity exhaust outlet is formed with water jacket, and cooling water is from above-mentioned cylinder blockFlow into above-mentioned water jacket,
On the composition surface of the above-mentioned cylinder block in above-mentioned cylinder head, be formed with cooling water introducing port, cooling water is from above-mentioned cylinder blockFlow into above-mentioned cooling water introducing port,
Above-mentioned cooling water introducing port is in the short transverse of above-mentioned internal combustion engine and above-mentioned bellying is overlapping and under above-mentioned bellyingSide's opening.
3. according to the cylinder head of claim 1 or internal combustion engine claimed in claim 2, it is characterized in that,
Above-mentioned bellying is formed at from the part that is positioned at top compared with above-mentioned virtual elongated surfaces above-mentioned curved bottom surface to upperState the region between the bottom surface of exhaust set portion.
4. the cylinder head to the internal combustion engine described in any one in claim 3 according to claim 1, is characterized in that,
Above-mentioned combustion chamber comprises: an end side combusion chamber, and it is formed at above-mentioned bank of cylinder direction one end; The other end side burningChamber, it is formed at above-mentioned bank of cylinder direction the other end; And intermediate combustion chamber, its be formed on an above-mentioned end side combusion chamber withBetween the side combusion chamber of above-mentioned the other end,
Above-mentioned bending exhaust outlet is by the exhaust outlet extending from an above-mentioned end side combusion chamber and fires from above-mentioned the other end sideThe exhaust outlet that extend burning chamber forms,
Above-mentioned linearity exhaust outlet is to be made up of the exhaust outlet extending from above-mentioned intermediate combustion chamber,
The above-mentioned linearity exhaust outlet extending from above-mentioned intermediate combustion chamber, be formed with above-mentioned bellying.
5. the cylinder head of internal combustion engine according to claim 4, is characterized in that,
By above-mentioned cylinder head in above-mentioned bank of cylinder direction orthogonal and cut off along the section of above-mentioned bank of cylinder direction,The height and position of the bottom surface of the above-mentioned linearity exhaust outlet in the short transverse of above-mentioned internal combustion engine is higher than the height of above-mentioned internal combustion engineThe height and position of the bottom surface of the above-mentioned bending exhaust outlet in direction.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014157283A JP6435693B2 (en) | 2014-08-01 | 2014-08-01 | Cylinder head of internal combustion engine |
| JP2014-157283 | 2014-08-01 | ||
| PCT/JP2015/071469 WO2016017675A1 (en) | 2014-08-01 | 2015-07-29 | Cylinder head for internal combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105612337A true CN105612337A (en) | 2016-05-25 |
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ID=55217573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201580002188.6A Pending CN105612337A (en) | 2014-08-01 | 2015-07-29 | Cylinder head for internal combustion engine |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP6435693B2 (en) |
| CN (1) | CN105612337A (en) |
| DE (1) | DE112015003558B4 (en) |
| WO (1) | WO2016017675A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112912597A (en) * | 2018-10-30 | 2021-06-04 | Tvs电机股份有限公司 | Internal combustion engine and method of manufacturing the same |
| CN113404604A (en) * | 2020-03-17 | 2021-09-17 | 本田技研工业株式会社 | Cylinder head of multi-cylinder engine |
| CN113404605A (en) * | 2020-03-17 | 2021-09-17 | 本田技研工业株式会社 | Cylinder head of multi-cylinder engine |
| CN113464307A (en) * | 2020-03-30 | 2021-10-01 | 本田技研工业株式会社 | Cylinder head of internal combustion engine |
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| CN1668836A (en) * | 2002-07-11 | 2005-09-14 | 戴姆勒-克莱斯勒股份公司 | Cylinder head of an internal combustion engine |
| JP2007187110A (en) * | 2006-01-13 | 2007-07-26 | Honda Motor Co Ltd | Multicylinder internal combustion engine equipped with cylinder head having collection type exhaust port |
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| US4302935A (en) * | 1980-01-31 | 1981-12-01 | Cousimano Robert D | Adjustable (D)-port insert header for internal combustion engines |
| JP3569636B2 (en) | 1998-12-01 | 2004-09-22 | 本田技研工業株式会社 | Cylinder head structure of multi-cylinder engine |
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2014
- 2014-08-01 JP JP2014157283A patent/JP6435693B2/en active Active
-
2015
- 2015-07-29 DE DE112015003558.3T patent/DE112015003558B4/en active Active
- 2015-07-29 CN CN201580002188.6A patent/CN105612337A/en active Pending
- 2015-07-29 WO PCT/JP2015/071469 patent/WO2016017675A1/en active Application Filing
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| US4228653A (en) * | 1979-03-19 | 1980-10-21 | General Motors Corporation | Engine cylinder exhaust port |
| JPS61187514A (en) * | 1985-02-15 | 1986-08-21 | Honda Motor Co Ltd | Four-cycle internal-combustion engine |
| US4993227A (en) * | 1988-01-11 | 1991-02-19 | Yamaha Hatsudoki Kabushiki Kaisha | Turbo-charged engine |
| JP2000018092A (en) * | 1998-06-30 | 2000-01-18 | Suzuki Motor Corp | Valve system for internal combustion engine |
| US20020026909A1 (en) * | 2000-08-25 | 2002-03-07 | Honda Giken Kogyo Kabushiki Kaisha | Multi cylinder internal combustion engine comprising a cylinder head internally defining exhaust passages |
| CN1668836A (en) * | 2002-07-11 | 2005-09-14 | 戴姆勒-克莱斯勒股份公司 | Cylinder head of an internal combustion engine |
| JP2007187110A (en) * | 2006-01-13 | 2007-07-26 | Honda Motor Co Ltd | Multicylinder internal combustion engine equipped with cylinder head having collection type exhaust port |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112912597A (en) * | 2018-10-30 | 2021-06-04 | Tvs电机股份有限公司 | Internal combustion engine and method of manufacturing the same |
| CN113404604A (en) * | 2020-03-17 | 2021-09-17 | 本田技研工业株式会社 | Cylinder head of multi-cylinder engine |
| CN113404605A (en) * | 2020-03-17 | 2021-09-17 | 本田技研工业株式会社 | Cylinder head of multi-cylinder engine |
| CN113404605B (en) * | 2020-03-17 | 2023-02-21 | 本田技研工业株式会社 | Cylinder head of multi-cylinder engine |
| CN113404604B (en) * | 2020-03-17 | 2023-05-30 | 本田技研工业株式会社 | Cylinder head of multi-cylinder engine |
| CN113464307A (en) * | 2020-03-30 | 2021-10-01 | 本田技研工业株式会社 | Cylinder head of internal combustion engine |
| CN113464307B (en) * | 2020-03-30 | 2023-06-13 | 本田技研工业株式会社 | Cylinder head of internal combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| DE112015003558T5 (en) | 2017-04-20 |
| JP2016035206A (en) | 2016-03-17 |
| JP6435693B2 (en) | 2018-12-12 |
| WO2016017675A1 (en) | 2016-02-04 |
| DE112015003558B4 (en) | 2024-05-02 |
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