CN107246311B - The oil passage structure of engine - Google Patents
The oil passage structure of engine Download PDFInfo
- Publication number
- CN107246311B CN107246311B CN201610887529.9A CN201610887529A CN107246311B CN 107246311 B CN107246311 B CN 107246311B CN 201610887529 A CN201610887529 A CN 201610887529A CN 107246311 B CN107246311 B CN 107246311B
- Authority
- CN
- China
- Prior art keywords
- engine
- oily channel
- cylinder
- cylinder head
- oil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P3/00—Liquid cooling
- F01P3/02—Arrangements for cooling cylinders or cylinder heads
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M1/00—Pressure lubrication
- F01M1/12—Closed-circuit lubricating systems not provided for in groups F01M1/02 - F01M1/10
-
- 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
- F02F1/02—Cylinders; Cylinder heads having cooling means
- F02F1/10—Cylinders; Cylinder heads having cooling means for liquid cooling
- F02F1/14—Cylinders with means for directing, guiding or distributing liquid stream
-
- 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
- F02F1/38—Cylinder heads having cooling means for liquid cooling the cylinder heads being of overhead valve type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P3/00—Liquid cooling
- F01P3/02—Arrangements for cooling cylinders or cylinder heads
- F01P2003/028—Cooling cylinders and cylinder heads in series
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
Abstract
A kind of oil passage structure of engine is provided, the oily channel for flowing engine oil is provided in the oil passage structure of the engine, which is separately positioned in crankcase, cylinder and cylinder head.The periphery for the exhaust port that the oily channel of the cylinder head circulates engine oil with cooling settings in cylinder head, and the engine oil is guided to the oily channel of cylinder.It is provided with protrusion in the wall surface at least one of the oily channel of cylinder head and the oily channel of cylinder, which projects upwards in the side vertical with the direction of flow path.
Description
Technical field
The present invention relates to a kind of engine oil passage structures, for passing through engine oil lubrication and cooling engine.
Background technique
Japan Patent is opened flat No.2013-72354 and discloses a kind of oily channel mold insert structure, which uses
In forming cylinder head side cooling oil channel in cylinder head, spark plug, air inlet port and exhaust end are wherein formed in cylinder head
Mouthful.Oily channel mold core include be used to form oil inlet flow path first protrusion, be used to form fuel-displaced flow path second protrusion and it is cold
But channel part, cooling duct part are used to form around spark plug with the cooling duct of the periphery of exhaust port flowing to be connected to
Oil inlet flow path and fuel-displaced flow path.Since engine oil flows through the oily channel mold core as above constructed, to be formed by lid side cooling oil logical
Road, cylinder head are cooled.
However, in the lid side cooling oil channel in oily the be formed in cylinder head of channel mold core by as above constructing, setting
Cooling duct between oil inlet flow path and fuel-displaced flow path is formed as forming branch to the periphery of spark plug and exhaust port.
Therefore, the engine oil flow rate for flowing through cooling duct is lower than the engine flowed in oil inlet flow path and fuel-displaced flow path
The flow velocity of oil, therefore the cooling efficiency decline of cylinder head.In this case, change rule to increase the flow velocity of engine oil
Lattice can lead to engine supercooling, therefore the heating performance decline of engine in engine cold start-up.
Summary of the invention
Considering the above situation, the present invention is devised, and the object of the present invention is to provide a kind of oily channel of engine knots
Structure can improve both heating performance and cooling efficiency of engine.
Oil passage structure by providing the engine of one aspect according to the present invention can be realized above and other target, should
The oily channel for flowing engine oil is provided in the oil passage structure of engine, which is separately positioned on crankcase, gas
In cylinder and cylinder head.The exhaust port that the oily channel of cylinder head circulates engine oil with cooling settings in cylinder head
Periphery, and engine oil is guided to the oily channel of cylinder.At least one of oily channel and the oily channel of cylinder of cylinder head
Wall surface in be provided with protrusion, protrusion is projected upwards in the side vertical with the direction of flow path.The oily channel of cylinder head
A part can have opening portion and The lid component, and opening portion is arranged in the upper surface of cylinder head and upward opening, The lid component from
Top covers opening portion.It could be formed with protruding portion in The lid component, protruding portion has the shape with the flow path of opening portion
Corresponding shape, and protruding portion can engage a part for constituting the oily channel of cylinder head with the flow path of opening portion.
Other aspects of the present invention have embodiments discussed below.
Mold core when can pass through casting forms the oily channel for being provided with protrusion.
Further, the protrusion in the oily channel of cylinder head can be set in the flow path of opening portion, or setting is being covered
In the protruding portion of component.Further, one connected surfaces in opening portion and The lid component can be not machined
Casting surface.
The oily channel of cylinder head can be set between intake valve and exhaust valve, and intake valve and exhaust valve are arranged at cylinder
Gai Zhong.In the oily channel of cylinder head, the flow path in oily channel can be formed as curved shape.
According to the present invention, at least one of oily channel of cylinder head and cylinder, in the flow path with oily channel
The vertical direction in direction on protrusion outstanding be arranged in the wall surface in channel.Therefore, when the temperature of engine oil is low and glues
When spending high, the flow velocity of engine oil is reduced due to the protrusion, so that the cooling performance of engine declines, heating rate increases, this can
To improve the heating performance of engine.In addition, when the temperature of engine oil is high and viscosity is low, increase due to engine oil flow rate and
Heat exchanger effectiveness due to the protrusion presence and increase, be able to ascend the cooling efficiency of engine.
Essence of the invention and further feature will be described with reference to the accompanying drawings in the following description, and of the invention its
His function and beneficial effect will become apparent.
Detailed description of the invention
Fig. 1 is shown provided with the left view of the two-wheeled motor vehicle of engine, and engine according to the present invention is used in the engine
Oil passage structure embodiment；
Fig. 2 is the front view for showing the engine and oil cooler of Fig. 1；
Fig. 3 is the right view for showing the engine of Fig. 1 and Fig. 2；
Fig. 4 is the system schematic for showing the oil passage structure of engine of the Fig. 1 into Fig. 3；
Fig. 5 is the plan view for showing the cylinder of Fig. 2 and Fig. 3；
Fig. 6 is the perspective view for showing mold core, which is used to form the oily channel in the cylinder head that Fig. 2 and Fig. 3 is arranged in；
Fig. 7 is perspective view when seeing along the arrow VII of Fig. 6；
Fig. 8 is view when seeing along the arrow VIII of Fig. 6；
Fig. 9 is the plan view for showing the cylinder head of Fig. 2 and Fig. 3；
Figure 10 is the enlarged plan view for showing the opening portion of Fig. 9；
Figure 11 is the plan view for showing cylinder head in the state that The lid component is installed to the opening portion of Fig. 9；
Figure 12 is the bottom view for showing the The lid component of Figure 11；
Figure 13 be show Figure 11 and 12 The lid component in terms of bottom side when perspective view；
Figure 14 is the sectional view along the line XIV-XIV of Figure 11；
Figure 15 is the enlarged plan view for showing the part XV of Fig. 5；And
Figure 16 is the sectional view along the line XVI-XVI of Figure 15.
Specific embodiment
The description of the oil passage structure of the engine of embodiment according to the present invention is provided next, with reference to attached drawing.
Fig. 1 is shown provided with the left view of the two-wheeled motor vehicle of engine, and engine according to the present invention is used in the engine
Oil passage structure embodiment.In addition, Fig. 2 is the front view for showing the engine and oil cooler of Fig. 1.Further, Fig. 3 is
The right view of the engine of Fig. 1 and Fig. 2 is shown.In the present embodiment, front and rear, left and right and upper and lower statement are based in vehicle
Driver on is reference.
Two-wheeled motor vehicle 10 shown in Fig. 1 includes main body frame 11, and 11 front end of main body frame is provided with front tube 12.It is main
Body frame 11 is so-called reel cage frame, and it is configurable to include front tube 12, main pipeline 13, lower pipeline 14 and a pair of of left and right seat
Position guide rail 15.
Steering mechanism 16 is pivotally arranged at front tube 12, positioned at the front upper part of main body frame 11.Front fork 17 is rotatably
Link front-wheel 19 and be provided with suspension mechanism wherein, front fork 17 and handle 18 are attached to steering mechanism 16.By using handle
Hand 18,19 left and right turn of front-wheel.In addition, front apron 20 is fixed to front fork 17 in a manner of covering the top of front-wheel 19.
Main pipeline 13 obliquely extends behind the top of front tube 12 towards lower vehicle, and is bent and is extended to
The lower part of vehicle, end portion and unshowned pivot frame link.In addition, lower pipeline 14 extends behind the lower part of front tube 12
It to the lower part of vehicle, and is bent to extend towards the rear portion of vehicle, end part and pivot frame link thereafter.Pivotal support portion
(not shown) constructs in pivot frame, and swing arm 23 is pivotally arranged at pivotal support portion, to can put in the up and down direction of vehicle
It is dynamic.Rear-wheel 24 is rotatably attached at the rear end of swing arm 23.
A pair of of left and right seat rail 15 links with main pipeline 13 and extends towards the rear portion of vehicle.Left and right seat rail 15
It is connected to each other by multiple frame bridge (not shown) of the subsequent application on the front-rear direction of vehicle.Further, these seats are led
Rail 15 is supported via a pair of of left and right seat post 25 by pivot frame.
Fuel tank 26 is supported on the position at the rear of front tube 12 by main pipeline 13.In addition, seat 27 passes through seat rail
15 are supported on 26 rear of fuel tank, neighbouring fuel tank 26.Further, the rear baffle 28 on the top of rear-wheel 24 is covered relative to seat
Guide rail 15 supports in suspension.In addition, rear buffer cell 29 is mounted between seat rail 15 and swing arm 23 and 25 He of seat post
Between swing arm 23, so that the impact load from rear-wheel 24 is absorbed.
Engine 30 is mounted between main pipeline 13 and lower pipeline 14.For example, four engines 30 for recycling single cylinder engine are located at
26 lower section of fuel tank.Engine 30 drives rear-wheel 24 via the drive chain 31 around its own and rear-wheel 24.Constitute engine air admittance system
Unshowned vaporizer (throttling body), air purifier for uniting etc. are succeedingly connected to the cylinder head 43 of composition engine 30 (later
Description) rear portion.Further, the unshowned exhaust pipe for constituting engine exhaust system and muffler are succeedingly connected to gas
The front of cylinder cap 43.
The front cover 32 for covering the front upper part of vehicle is placed on steering mechanism 16 or front fork 17, and headlight 33 etc. is arranged in
On front cover 32.In addition, a pair of of left and right sides of the front lower portion in the rear lower and seat 27 of the rear of engine 30 covering fuel tank 26
Lid 34 is attached to main pipeline 13 and seat rail 15.Further, the rear cover 35 of the rear lower at seat 27 is covered above rear-wheel 24
It is attached to seat rail 15.
As shown in Figures 2 and 3, engine 30 is the single cylinder engine of four circulations as described above, is configurable to include crankshaft
Case 41, cylinder head 43 and closure cylinder with the top of the cylinder 42 of the front connection of the upper surface of crankcase 41, closure cylinder 42
The front cover 44 at the top of lid 43.
By combining left hand half 41A and right hand half 41B to constitute crankcase 41 at faying face 41C, magnetic lid 45 is set
It sets in left hand half 41A, and clutch case 46 is arranged in right hand half 41B.Crankshaft 47 is rotatably attached at crankshaft
In the crankshaft room of case 41.In addition, speed changer room 50 is formed as the crankshaft room in neighbouring crankcase 41.Speed changer (T/M) 51 includes
Countershaft 39 and drive shaft 40 (as shown in Figure 4), and be accommodated in speed changer room 50.In addition, for storage engines oil
The lower part of crankcase 41 is arranged in food tray 49.
Cylinder 42 is linked with the posture and crankcase 41 that slightly lean forward.Cylinder-bore 52 with cylindrical shape is formed in cylinder
In 42.It is arranged to move back and forth in cylinder-bore 52 via the piston 53 that connecting rod (not shown) is connected to crankshaft 47.This
Outside, cam chain room 54 as shown in Figure 5 is formed as the cylinder-bore 52 in neighbouring cylinder 42.
Cylinder head 43 as shown in Figures 2 and 3 and the top of cylinder 42 links at its own between piston 53 shape
At combustion chamber 55, therefore it is closed the top of cylinder-bore 52.Since fuel-air mixture burns in combustion chamber 55, piston 53
It moves back and forth.In addition, cylinder head 43, which is arranged to wall side behind, to be had for fuel-air mixture to be supplied into combustion chamber
55 a pair of of air inlet port 56, and there is the exhaust port of the burning gases generated in discharge combustion chamber 55 in its antetheca side
57。
In addition, as shown in Figure 3 and Figure 9, valve activator 60 is contained in its own cylinder head 43 between front cover 44,
The driving of valve activator 60 opens/closes a pair of of intake valve 58 of air inlet port 56 and opens/closes one of exhaust port 57
Exhaust valve 59.Crankshaft 47 drives valve activator 60 via the unshowned cam chain being arranged between camshaft 61 and crankshaft 47
Camshaft 61.Cam chain is arranged in the cam chain room 54 (Fig. 5) of cylinder 42 and the cam chain room 62 (Fig. 9) of cylinder head 43.
In addition, as shown in figs. 5 and 9, bolt hole 63 is respectively formed at 52 He of cylinder-bore in cylinder 42 and cylinder head 43
Four positions of the periphery of combustion chamber 55.Since stud 64 is inserted into each bolt hole 63, cylinder 42 and cylinder head 43 and song
Axle box 41 links.
As shown in Fig. 2, engine 30 constructed as described above includes oil passage structure 65.Oil passage structure 65 is configured to wrap
Crankcase side oil channel 66, cylinder side oil channel 67 and cylinder head side oil channel 68 are included, as shown in Figure 4.
Crankcase side oil channel 66 is the oily channel being arranged in crankcase 41.Crankcase side oil channel 66 supplies engine oil
Should to and lubricate each lubrication portion of crankcase 41 and cylinder 42.In addition, cylinder side oil channel 67 is arranged in cylinder 42
Oily channel, and specifically with the periphery of the cooling combustion chamber 55 of engine oil.Further, cylinder head side oil channel 68 is that setting exists
Oily channel in cylinder head 43, and valve activator 60 and the periphery with the cooling exhaust port 57 of engine oil are lubricated, then
Engine oil is guided to cylinder side oil channel 67.
As shown in Figures 2 to 4, crankcase side oil channel 66 be configured in succession with the first oily channel part 71, oil pump 69, second
Oily channel part 72, oil filter 70 and third oil channel part 73 connect, and are connected to the 4th oily company of channel part 74 of oil filter 70
It connects.
First oily channel part 71 is directly connected to food tray 49 or is connected to food tray 49 via unshowned oil strainer.This
Outside, oil pump 69 is the mechanical oil pump driven by accessory drive gear (not shown), and the accessory drive gear and crankshaft 47 are rotatably
In conjunction with.Therefore, the output of oil pump 69 depends on the rotation speed (therefore, the rotation speed depending on engine 30) of crankshaft 47, and
And as the rotation speed of crankshaft 47 increases, the engine oil of injection is more.
Due to the operation of oil pump 69, the engine oil in food tray 49 is directly sprayed via the first oily channel part 71 from oil pump 69
Out, or after oil strainer removes exogenous impurity it is directly sprayed, and flows into oil filter 70 via the second oily channel part 72,
To which the exogenous impurity in engine oil is removed.
The engine oil for having passed through the removal exogenous impurity of oil filter 70 is provided to engine 30 via third oil channel part 73
Each lubrication portion, that is, the crankshaft 47 of such as crankshaft room, the piston 53 slided in the cylinder-bore 52 of cylinder 42 and speed changer room
Speed changer 51 in 50, and lubricate crankshaft 47, piston 53 and speed changer 51 (including countershaft 39 and drive shaft 40).In addition, the
Four oily channel parts 74 are connected to the 5th oily channel part 75 in cylinder side oil channel 67.
As shown in Figures 2 and 3, cylinder side oil channel 67 is configurable to include: the 5th 75 He of oily channel part to communicate with each other
6th oily channel part 76；The 5th oily channel is connected to via inflow side oil hose 83, oil cooler 84 and outflow side oil hose 85
The oily channel part 78 of the 8th of portion 75；And the tenth oily channel part 81 in oily channel part 80 and the 11st to communicate with each other.In addition, cylinder
Lid side oil channel 68 is configurable to include the 7th oily channel part 77 and the 9th oily channel part 79, wherein the 7th oily channel part 77 and gas
The oily channel part 76 of the 6th of cylinder side oil channel 67 is connected to, the 8th oily channel part of the 9th oily channel part 79 and cylinder side oil channel 67
78 are connected to the tenth oily channel part 80.
As shown in Figures 2 and 3, the 5th of cylinder side oil channel 67 the oily channel part 75 is configured under the antetheca of cylinder 42
Portion extends linearly in the horizontal direction.The a part for the engine oil for flowing into the 5th oily channel part 75 is arrived via the 6th oily channel part 76
Up to the 7th oily channel part 77 in cylinder head side oil channel 68, and (the tool of valve activator 60 is oriented to from the 7th oily channel part 77
Body, camshaft 61), therefore lubricate valve activator 60.
Herein, as shown in Figure 2 and Figure 5, the 6th oily channel part 76 is formed in cylinder 42, the with cylinder side oil channel 67
Five oily channel parts 75 upwardly extend with intersecting vertically.Further, the 7th oily channel part 77 is formed in cylinder head 43, thus with gas
The oily channel part 76 of the 6th of cylinder side oil channel 67 is connected to, and is extended in generally vertical direction, to reach valve activator
Near 60 camshaft 61.
As shown in Fig. 2, flowing into the rest part of the engine oil of the 5th oily channel part 75 in cylinder side oil channel 67 via stream
Enter side oil hose 83 to flow into oil cooler 84 and be cooled.As depicted in figs. 1 and 2, oil cooler 84 is arranged in main body frame 11
Lower pipeline 14 on engine 30 diagonally above and frontward.Particularly, oil cooler 84 is preferably arranged to avoid front-wheel 19 and preceding shield
The position in the front of lid 20 is exposed in the larger amount of traveling wind of two-wheeled motor vehicle 10.In addition, for generating cooling wind
Cooling fan 86 is arranged in the rear of oil cooler 84.Oil cooler 84 is as a result, with the cooling wind and two-wheeled motor vehicle of cooling fan 86
10 traveling wind has flowed into engine oil therein by heat exchange cooling.
As shown in Fig. 2, Fig. 4 and Fig. 5, flowed into via the cooling engine oil of oil cooler 84 via outflow side oil hose 85
The oily channel part 78 of the 8th of cylinder side oil channel 67, and further cylinder head side oil channel 68 is flowed into from the 8th oily channel part 78
The 9th oily channel part 79.
8th oily channel part 78 is formed in corner, and left side wall is in the antetheca of cylinder 42, as illustrated in Figures 5 and 6.This
Outside, the 9th of description the oily channel part 79 is formed in the periphery of the exhaust port 57 in cylinder head 43 later, so that coming from cylinder
(circulation) is flowed in the periphery of exhaust port 57 of the engine oil of the oily channel part 78 of the 8th of side oil channel 67 in cylinder head 43, therefore
The periphery of cooling exhaust port 57.
The engine oil for having flowed through the 9th oily channel part 79 then flows into the tenth oily channel part 80 in cylinder side oil channel 67,
As shown in Figures 4 and 5.Later by the tenth of description oily channel part 80 be formed in cylinder 42 in the connected surfaces of cylinder head 43,
The periphery of cylinder-bore 52, so that the engine oil from the 9th oily channel part 79 circumferentially flows, therefore cooling combustion chamber 55 is outer
Week.The engine oil for having cooled the periphery of combustion chamber 55 is returned to via the 11st oily channel part 81 in cylinder side oil channel 67
Food tray 49 in crankcase 41, as shown in Fig. 2, Fig. 4 and Fig. 5.11st oily channel part 81 shape in the vertical direction in corner
At, and its right front wall is in the antetheca of cylinder 42.
As shown in Fig. 6 to 8, by making engine oil circulate the periphery of exhaust port 57 in cooling cylinder head 43
9th oily channel part 79 is configurable to include the lower flowing path portion 87 formed by lower mold core 90, the upstream formed by upper mold core 91
Move path portion 88 and by Cutting Process, such as the exhaust flow path portion 89 for the formation that drills.However, for upper flowing path portion
88, as shown in Fig. 9, Figure 11 and Figure 14, in fact, being arranged in the upper surface of cylinder head 43 and the opening portion 92 of upward opening
It is formed by upper mold core 91, and upper flowing path portion 88 is constituted by using the The lid component 93 for covering from above opening portion 92.
As shown in Fig. 6 to 8, the lower section of exhaust port 57 of the lower flowing path portion 87 in cylinder head 43 is shaped generally as semicircle
Arc shape, and extend towards the right side of exhaust port 57.Then, the upstream end and cylinder side oil channel of lower flowing path portion 87
The oily channel part 78 of the 8th of 67 is connected to.The lower mold core 90 of lower flowing path portion 87 is used to form on the surface towards exhaust port 57
In be provided with recess portion 94.Recess portion 94 forms prominent in the flow path wall surface towards exhaust port 57 of lower flowing path portion 87
Play 95, the protrusion 95 with the direction of flow path (that is, the flow direction of engine oil flowed in lower flowing path portion 87)
Flow downward on vertical direction path portion 87 inside it is prominent.
As shown in Fig. 6 and Fig. 9, the opening portion 92 of upper flowing path portion 88 is formed in top and the valve driving of exhaust port 57
In the region of the lower section of mechanism 60 and between the intake valve 58 placed in pairs and an exhaust valve 59.The upstream of opening portion 92
End is connected to lower flowing path portion 87 and downstream is connected to exhaust flow path portion 89.In addition, opening portion 92 forms bending
Shape, and there is flow path longer than linear flow path, to increase the heat exchange effect of the engine oil of internal flow
Rate.
Further, the upper mold core 91 for forming opening portion 92 is formed with recess portion 96 in its outer surface, as shown in Figure 6 to 8.
Recess portion 96 formed protrusion 97, the protrusion 97 in the flow path wall surface of opening portion 92 with the direction of flow path (that is,
The flow direction of the engine oil flowed in opening portion 92) vertical side is prominent upwardly toward the inside of opening portion 92, such as Figure 10 institute
Show.
As shown in Figure 11 to 14, the The lid component 93 of upper flowing path portion 88 covers from above opening portion 92 as described above,
And it is provided with protruding portion 98 corresponding with the shape of the flow path of opening portion 92 in a projecting manner.Due to The lid component 93
Protruding portion 98 is inserted into the flow path of opening portion 92 composition of the gap in connection, between protruding portion 98 and opening portion 92
The upper flowing path portion 88 of 9th oily channel part 79.It should be noted that instead of the flow path wall surface for being formed in opening portion 92
Protrusion 97 (Figure 10) projected upwards as shown in figure 13 with the vertical side in the upper flowing direction of flow path of path portion 88
Protrusion 99 can be formed in The lid component 93 protruding portion 98 side part or all of region in.
In addition, The lid component 93 is fixed to cylinder head 43 by being attached bolt 100 as shown in Fig. 9, Figure 13 and Figure 14, and
And the connected surfaces 93A of The lid component 93 and the connected surfaces 92A of opening portion 92 are concatenated.At this point, the connected surfaces of The lid component 93
One (for example, connected surfaces 93A of The lid component 93) in 93A and the connected surfaces 92A of opening portion 92 be formed to have without
The surface of machining, the not machined surface free is by plane turning, as casting surface.This may be implemented following
Construction, wherein gas, such as bubble, can pass through the connected surfaces 93A for the The lid component 93 being concatenated and the connection of opening portion 92
Gap between the 92A of surface.It should be noted that the appended drawing reference 101 in Figure 11 is indicated for accommodating valve activator 60
Cam shell.
As shown in Figure 6 and Figure 7, the exhaust flow path portion 89 of the 9th oily channel part 79 is connected to upper flowing path portion 88,
And it is processed into towards the left side of exhaust port 57 and tilts down.The downstream in exhaust flow path portion 89 and cylinder side oil are logical
The oily channel part 80 of the tenth of road 67 is connected to.In this way, since engine oil is by lower flowing path portion 87, upper flowing path portion
88 and the 9th oily channel part 79 that forms of exhaust flow path portion 89 in flow, the periphery quilt of the exhaust port 57 in cylinder head 43
It is cooling.
As shown in Fig. 5, Figure 15 and Figure 16, the tenth oily channel part 80 in the connected surfaces of the cylinder head 43 in cylinder 42
It is limited and is constituted by annular groove 102 and washer 103 (Fig. 3), which is circlewise formed in cylinder-bore (burning
Room 55) periphery, the washer 103 is between cylinder 42 and cylinder head 43.Annular groove 102 is in the exhaust end with cylinder head 43
At the corresponding import department 102A of lower area of the mouth 57 and exhaust flow path portion 89 of the 9th oily channel part 79 of cylinder head 43
Connection, and around cylinder-bore 52 (combustion chamber 55), thus the 11st oily channel of outlet portion 102B and cylinder side oil channel 67
Portion 81 is connected to.
Annular groove 102 is also formed by the mold core of unshowned annular, and the mold core of annular is in inner peripheral surface and periphery
Surface is formed with multiple recess portions, and accordingly with above-mentioned recess portion, multiple protrusions 104 are formed in annular groove 102, such as Figure 15
Shown in 16.Protrusion 104 is formed on the opposed inner walls surface of annular groove 102, and on the flowing road with annular groove 102
The vertical side in the direction (that is, flow direction of the engine oil flowed in annular groove 102) of diameter is upwardly toward in annular groove 102
Side is prominent.Due to the tenth so configured oily channel part 80 (particularly, annular groove 102) of engine oil stream, cylinder 42 is gentle
The periphery of the combustion chamber 55 of cylinder cap 43 is cooled.
Due to can be realized following effects (1) to (6) according to the present embodiment with above-mentioned construction.
(1) vertical with the direction of flow path of each of opening portion 92 and annular groove 102 side upwardly toward
The 9th oil that cylinder head side oil channel 68 as shown in Figure 4 is arranged in the inside difference protrusion 97,104 outstanding of flow path is logical
Wall surface, Fig. 6 in the present embodiment, figure of at least one of the tenth oily channel part 80 in road portion 79 and cylinder side oil channel 67
9 and the 9th oily channel part 79 shown in Fig. 10 upper flowing path portion 88 opening portion 92 in flow path wall surface and
In the flow path wall surface of Fig. 5 and the annular groove 102 of the tenth oily channel part 80 shown in figure 15.
Therefore, when the temperature of engine oil is low and viscosity is high, the flow velocity of engine oil is reduced due to protrusion 97,104, is made
The cooling performance decline of engine is obtained, the heating rate of engine 30 increases, so as to improve the heating performance of engine 30.In addition,
When the temperature of engine oil is high and viscosity is low, the flow velocity of engine oil increase and rate of heat exchange due to protrusion 97,104 presence
And increase, so as to promote the cooling efficiency of engine 30.
(2) as shown in Fig. 6, Fig. 9 and Figure 10 the 9th oily channel part 79 upper flowing path portion 88 opening portion 92
In there are protrusions 97, and there are protrusions 104 in the annular groove 102 of the tenth oily channel part 80 as shown in Fig. 5 and Figure 15, open
The engine oil flowed in oral area 92 and annular groove 102 generates separation at the tip of protrusion 97,104 and is vortexed.This separation vortex
The generation of rotation leads to the formation of turbulent boundary layer, so that along the engine oil of opening portion 92 and the wall surface of annular groove 102
Flowing increases, to enhance heat exchange.Since the heat transference efficiency between opening portion 92 and the wall surface of annular groove 102 increases
And therefore engine oil increases, and can further improve the cooling efficiency of engine 30.
Herein, above-mentioned turbulent boundary layer is the boundary layer opposite with laminar boundary layer.That is, laminar boundary layer be by laminar flow and
The boundary layer of composition, and due to only generating the momentum-exchange between fluid by molecular motion (fluid molecule collision), it is this dynamic
Amount exchange will not be enlivened especially.Therefore, laminar boundary layer is first separated than turbulent boundary layer, and is showed and flowed near wall surface
The velocity flow profile that speed is gradually decreased towards wall surface.Therefore, the current difference between wall surface and laminar boundary layer is smaller, and applies
Frictional resistance on the wall surface is added to become smaller.Laminar boundary layer is turbulent boundary layer as Reynolds number increases and changes.
Relatively, turbulent boundary layer is the boundary layer that turbulent flow is constituted, and has thickness degree more smaller than laminar boundary layer.
In turbulent boundary layer, due to the eddying motion of fluid, there is the fluid of big flow velocity and be positioned closer to wall surface position and tool
There is the fluid of smaller momentum to mix, to change active momentum-exchange.Therefore, because continuing momentum is attached supplied to wall surface
Close fluid, turbulent boundary layer are less prone to separate compared with laminar boundary layer.For the characteristic, the wing of aircraft is usually arranged
There is vortex generator, which is the protrusion for intentionally generating turbulent flow.Further, since being generated in turbulent boundary layer
Mean flow rate, the velocity flow profile that there is the flow velocity near wall surface to reduce rapidly towards wall surface.Therefore, frictional resistance increases
Add.
(3) as shown in Fig. 9, Figure 11 and Figure 14, the upper flow path of the oily channel part 79 of the 9th of cylinder head side oil channel 68
Portion 88 is made of the The lid component 93 for covering from above the opening portion 92 of upward opening.Therefore, because the stream of upper flowing path portion 88
Shape, the flow path area etc. in dynamic path can be designed easily, can increase the flow path of upper flowing path portion 88
The freedom degree of shape etc..
(4) due to the 9th oily channel part 79 upper flowing path portion 88 by by the insertion of protruding portion 98 of The lid component 93 and
Be bonded to opening portion 92 and formed, flow path area can be set to it is smaller, without wall thickness, the drill bit by mold core
The limitation of the applications such as diameter.Therefore, because the flow velocity of the engine oil flowed in upper flowing path portion 88 increases, can further change
The cooling efficiency of kind engine 30.
(5) as shown in Figure 10, Figure 11 and Figure 13, the connected surfaces 92A of opening portion 92 and the connected surfaces 93A of The lid component 93
In one (for example, connected surfaces 93A of The lid component 93) be formed as not machined casting surface.Therefore, work as opening
The connected surfaces 92A in the portion 92 and connected surfaces 93A of The lid component 93 links to be fixed to The lid component 93 by being attached bolt 100
When cylinder head 43, gap is formed between connected surfaces 92A, 93A, so that gas can pass through the gap.Therefore, although opening portion
Air-tightness between 92 and The lid component 93 deteriorates, but can be discharged and be opened by the gap between two connected surfaces 92A, 93A
Remaining bubble in the upper flowing path portion 88 that oral area 92 and The lid component 93 are constituted.This makes it possible to prevent flowing path portion 88
Localized hyperthermia.
(6) as shown in figs. 6 and 10, the opening portion 92 in the upper flowing path portion 88 of the 9th oily channel part 79 forms bending
Shape.Therefore, compared with the flow path linearly formed the case where, since the flow-path-length of opening portion 92 can be arranged
It is bigger, both heating performance and cooling efficiency of engine 30 can be improved.
Above-described embodiment is only presented in an illustrative manner, is not intended to limit the scope of the present invention.Reality described herein
Applying example can implement in various ways.Further, omissions, substitutions and changes are carried out to the embodiment of the present invention, without departing from
Purport of the invention.The attached claims and its equivalent mean to cover these variations, they both fall within of the invention
Range.
For example, although it have been described that the lower flowing path portion 87 of the 9th oily channel part 79 as illustrated in Figures 5 and 6 is by lower die
The opening portion 92 of the formation of core 90, upper flowing path portion 88 is formed by upper mold core 91 and the annular groove of the tenth oily channel part 80
102 examples formed by annular mold core, but lower flowing path portion 87, opening portion 92 and annular groove 102, it is especially annular recessed
Slot 102, it is convenient to omit mold core and by machining formed.
In addition, being flowed in composition on the surface of the protruding portion 98 (Figure 13) of the The lid component 93 of path portion 88, can be formed
Fine protruding portion and depressed section is to increase heat exchange area.Further, if engine 30 is compact, in Fig. 1 and Fig. 2
Shown in oil cooler 84 can be omitted, and even if omit oil cooler 84, can also guarantee the cooling performance of engine 30.
Claims (6)
1. a kind of oil passage structure of engine is provided with the oily channel for flowing engine oil, which is respectively set
In crankcase, cylinder and cylinder head, the oily channel of the cylinder head circulates the engine oil to cool down and set
The periphery of the exhaust port in the cylinder head is set, and the engine oil is guided to the oily channel of the cylinder；
It is characterized in that,
It is provided in the wall surface at least one of the oily channel of the cylinder head and the oily channel of the cylinder
Protrusion, the protrusion are projected upwards in the side vertical with the direction of flow path,
The a part in the oily channel of the cylinder head has opening portion and The lid component, and the opening portion is arranged in the cylinder
The upper surface of lid and upward opening, the The lid component cover from above the opening portion,
Protruding portion is formed in the The lid component, the protruding portion has corresponding with the shape of the flow path of the opening portion
Shape；And the protruding portion engages the oily channel for constituting the cylinder head with the flow path of the opening portion
Described a part.
2. the oil passage structure of engine as described in claim 1, which is characterized in that
Mold core when passing through casting forms the oily channel for being provided with the protrusion.
3. the oil passage structure of engine as described in claim 1, which is characterized in that
The protrusion in the oily channel of the cylinder head is arranged in the flow path of the opening portion, or setting
In the protruding portion of the The lid component.
4. the oil passage structure of engine as described in claim 1, which is characterized in that
One connected surfaces in the opening portion and the The lid component are not machined casting surfaces.
5. the oil passage structure of engine as described in claim 1, which is characterized in that
The oily channel of the cylinder head is arranged between intake valve and exhaust valve, and the intake valve and the exhaust valve are all provided with
It sets in the cylinder head.
6. the oil passage structure of engine as described in claim 1, which is characterized in that
In the oily channel of the cylinder head, the flow path in the oil channel is formed as curved shape.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015-201929 | 2015-10-13 | ||
| JP2015201929A JP6394555B2 (en) | 2015-10-13 | 2015-10-13 | Engine oil passage structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107246311A CN107246311A (en) | 2017-10-13 |
| CN107246311B true CN107246311B (en) | 2019-09-24 |
Family
ID=58551237
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610887529.9A Active CN107246311B (en) | 2015-10-13 | 2016-10-11 | The oil passage structure of engine |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6394555B2 (en) |
| CN (1) | CN107246311B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6946735B2 (en) * | 2017-05-18 | 2021-10-06 | スズキ株式会社 | EGR device for internal combustion engine |
| JP7040979B2 (en) | 2018-03-29 | 2022-03-23 | 本田技研工業株式会社 | Oil channel structure of internal combustion engine |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0381512A (en) * | 1989-08-25 | 1991-04-05 | Suzuki Motor Corp | Lubricating oil cooling device for motor cycle engine |
| DE102011100138A1 (en) * | 2011-04-30 | 2011-12-22 | Daimler Ag | Cylinder housing i.e. cylinder crankcase, for combustion engine, has cylinder comprising open-cover water jacket based on open-cover construction, where cylindrical tube support is provided in cylinder at annular upper portion of cylinder |
| JP2013072354A (en) * | 2011-09-28 | 2013-04-22 | Honda Motor Co Ltd | Oil path core structure of cylinder head |
| GB2498782A (en) * | 2012-01-27 | 2013-07-31 | Gm Global Tech Operations Inc | Engine block cooling with oil around and sprayed into a cylinder |
| JP2014173512A (en) * | 2013-03-11 | 2014-09-22 | Nissan Motor Co Ltd | Heat-transfer system and power train cooling system using the same |
| CN104632318A (en) * | 2013-11-08 | 2015-05-20 | 本田技研工业株式会社 | Oil passage structure of dry sump engine and oil passage structure of V-shaped dry sump engine |
| CN204402680U (en) * | 2015-01-20 | 2015-06-17 | 福州海霖动力有限公司 | Oil injection type diesel engine |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2876828B2 (en) * | 1991-07-18 | 1999-03-31 | トヨタ自動車株式会社 | Internal combustion engine cooling system |
| JP6044076B2 (en) * | 2011-03-29 | 2016-12-14 | 本田技研工業株式会社 | Oil cooling engine |
-
2015
- 2015-10-13 JP JP2015201929A patent/JP6394555B2/en active Active
-
2016
- 2016-10-11 CN CN201610887529.9A patent/CN107246311B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0381512A (en) * | 1989-08-25 | 1991-04-05 | Suzuki Motor Corp | Lubricating oil cooling device for motor cycle engine |
| DE102011100138A1 (en) * | 2011-04-30 | 2011-12-22 | Daimler Ag | Cylinder housing i.e. cylinder crankcase, for combustion engine, has cylinder comprising open-cover water jacket based on open-cover construction, where cylindrical tube support is provided in cylinder at annular upper portion of cylinder |
| JP2013072354A (en) * | 2011-09-28 | 2013-04-22 | Honda Motor Co Ltd | Oil path core structure of cylinder head |
| GB2498782A (en) * | 2012-01-27 | 2013-07-31 | Gm Global Tech Operations Inc | Engine block cooling with oil around and sprayed into a cylinder |
| JP2014173512A (en) * | 2013-03-11 | 2014-09-22 | Nissan Motor Co Ltd | Heat-transfer system and power train cooling system using the same |
| CN104632318A (en) * | 2013-11-08 | 2015-05-20 | 本田技研工业株式会社 | Oil passage structure of dry sump engine and oil passage structure of V-shaped dry sump engine |
| CN204402680U (en) * | 2015-01-20 | 2015-06-17 | 福州海霖动力有限公司 | Oil injection type diesel engine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107246311A (en) | 2017-10-13 |
| JP2017075535A (en) | 2017-04-20 |
| JP6394555B2 (en) | 2018-09-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6438917B2 (en) | Breather device for internal combustion engine | |
| JP6561771B2 (en) | Saddle riding vehicle | |
| CN105649746B (en) | The cooling oil passage structure of multi-cylinder engine | |
| CN107246311B (en) | The oil passage structure of engine | |
| JP6638572B2 (en) | Air cleaner intake structure | |
| JP2017219014A (en) | Gas-liquid separation device for blow-by gas of engine | |
| JP2015218717A (en) | Laminar scavenging-air type two-cycle internal combustion engine, and carburetor thereof | |
| JP2013015055A (en) | Breather structure in motorcycle engine | |
| CN104819066A (en) | Cylinder head air inlet structure of engine | |
| JP2017057819A (en) | Oil passage structure for engine | |
| JP2009228708A (en) | Cooling structure for transmission | |
| US8789498B2 (en) | Internal combustion engine and straddle-type vehicle including the same | |
| CN105626221B (en) | The grease channel structure of internal combustion engine | |
| JP6665708B2 (en) | Engine oil passage structure | |
| JP6923326B2 (en) | Internal combustion engine | |
| CN107178414B (en) | Engine | |
| JP2011190787A (en) | Blow-by gas ventilation structure of internal combustion engine | |
| BRPI1002955A2 (en) | saddle type vehicle | |
| JP3168137U (en) | Transmission cooling structure | |
| JP7342056B2 (en) | Internal combustion engine cooling structure | |
| JP2016166574A (en) | Engine | |
| JP5782716B2 (en) | Engine oil lubrication structure | |
| JP5277122B2 (en) | Engine and engine manufacturing method | |
| JP6576866B2 (en) | Air-cooled internal combustion engine for saddle riding type vehicles | |
| JP6668680B2 (en) | Saddle-type vehicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |