CN105422214A - Oil separating structure of internal combustion engine - Google Patents
Oil separating structure of internal combustion engine Download PDFInfo
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- CN105422214A CN105422214A CN201510579335.8A CN201510579335A CN105422214A CN 105422214 A CN105422214 A CN 105422214A CN 201510579335 A CN201510579335 A CN 201510579335A CN 105422214 A CN105422214 A CN 105422214A
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- separation chamber
- oil separation
- oil
- chamber
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- 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
- F01M13/00—Crankcase ventilating or breathing
- F01M13/04—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
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- 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
- F01M13/00—Crankcase ventilating or breathing
- F01M13/04—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
- F01M2013/0433—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil with a deflection device, e.g. screen
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- 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
- F01M13/00—Crankcase ventilating or breathing
- F01M13/04—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
- F01M2013/0461—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil with a labyrinth
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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
- F02F7/00—Casings, e.g. crankcases or frames
- F02F7/0002—Cylinder arrangements
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
Abstract
The invention provides an oil separating structure of an internal combustion engine, wherein the oil separating structure can restrain inner pressure increase of a crank chamber and can improve separating performance of oil. The oil separating structure is provided with an oil separating chamber (17) which is arranged at the side of a cylinder body (2) and separates the oil in leaked gas which is leaded from the crank chamber and a chain accommodating chamber. The oil separating chamber (17) is provided with the components of an oil separating chamber (41) which is provided with an inflow opening (41A) that is communicated with the chain accommodating chamber, and the leaked gas in the chain accommodating chamber (22) flows from the inflow opening (41A) into the oil separating chamber (41); and an oil separating chamber (42) which is provided with an inflow opening (42A) that is communicated with the crank chamber, and the leaked gas in the crank chamber flows from the inflow opening (42A) into the oil separating chamber (42), wherein the volume of the oil separating chamber (41) is larger than that of the oil separating chamber (42).
Description
Technical field
The present invention relates to the oil separating structure of internal-combustion engine, particularly relate to the oil separating structure of the internal-combustion engine from blow-by gas separating oil.
Background technique
In the past, as the oil separating structure of internal-combustion engine being equipped on automobile etc., the known device (such as with reference to patent documentation 1) possessing point grease chamber (being equivalent to oil separation chamber) from blow-by gas separating oil.This point of grease chamber is formed at the side of cylinder block, and point grease chamber is communicated with crank chamber by blow-by gas introduction hole.
In point grease chamber, be provided with multiple oil baffle, flow into the blow-by gas of point grease chamber and oil baffle collision rift from blow-by gas separating oil from crank chamber through blow-by gas introduction hole.
Be separated the blow-by gas after oil and again sent into firing chamber from point grease chamber through suction tude, again burnt together with mixed gas in a combustion chamber.Thus, the oil deterioration due to blow-by gas being accumulated in oil sump can be prevented.
prior art document
patent documentation
Patent documentation 1: open clear 64-3015 publication in fact
Summary of the invention
the problem that invention will solve
But the oil separating structure Jin Shifen grease chamber of this existing internal-combustion engine is communicated with crank chamber via 1 blow-by gas introduction hole.Therefore, when pressure in crank chamber uprises, the pressure of crank chamber is dispersed into a point grease chamber through blow-by gas introduction hole, therefore cannot reduces the pressure in crank chamber fast, be difficult to suppress to press liter in crank chamber.
Therefore, the oil lodging in oil sump flows into point grease chamber through blow-by gas introduction hole, is hindered and cannot easily divide from blow-by gas separating oil in grease chamber by this oil, and the separating property of oil likely worsens.
The present invention is conceived to above-mentioned this problem and completes, and its object is to provide the oil separating structure that can suppress to press in crank chamber liter, can improve the internal-combustion engine of the separating property of oil.
for the scheme of dealing with problems
The present invention is the oil separating structure of internal-combustion engine, has: chain housing, and it is arranged on the end of cylinder block and head, for covering the timing chain driving force of crankshaft being delivered to camshaft; Chain accommodation chamber, it is surrounded by chain housing, cylinder block and cylinder head; Crank chamber, it is formed in the inside of cylinder block, is communicated with chain accommodation chamber; And oil separation chamber, it is formed in the side of cylinder block, for separating of the oil in blow-by gas, oil separation chamber is separated the oil in the blow-by gas imported from crank chamber and chain accommodation chamber, oil separation chamber has: the 1st oil separation chamber, it has the 1st inflow entrance, and the 1st inflow entrance is communicated with chain accommodation chamber, and the blow-by gas in chain accommodation chamber flows into the 1st oil separation chamber from the 1st inflow entrance; And the 2nd oil separation chamber, it has the 2nd inflow entrance, and the 2nd inflow entrance is communicated with crank chamber, and the blow-by gas in crank chamber flows into the 2nd oil separation chamber from the 2nd inflow entrance.
invention effect
According to the present invention, oil separation chamber has: the 1st oil separation chamber, and it has the 1st inflow entrance, and above-mentioned 1st inflow entrance is communicated with chain accommodation chamber, and the blow-by gas in chain accommodation chamber flows into the 1st oil separation chamber from above-mentioned 1st inflow entrance; And the 2nd oil separation chamber, it has the 2nd inflow entrance, and above-mentioned 2nd inflow entrance is communicated with crank chamber, and the blow-by gas in crank chamber flows into the 2nd oil separation chamber from above-mentioned 2nd inflow entrance.
Thus, oil separation chamber can be made to be communicated with crank chamber by the 1st inflow entrance and chain accommodation chamber, and to be communicated with crank chamber by the 2nd inflow entrance.Therefore, when press in crank chamber rise time, the pressure of crank chamber can be dispersed into oil separation chamber by the 1st inflow entrance and the 2nd inflow entrance, the pressure increase of crank chamber can be suppressed fast.
Thus, such as, the oil lodging in oil sump can be suppressed to flow into oil separation chamber, can from blow-by gas reliably separating oil in oil separation chamber.Consequently, the separating property of oil can be improved.
Accompanying drawing explanation
Fig. 1 is the figure of a mode of execution of the oil separating structure representing internal-combustion engine of the present invention, is the summary pie graph of blow-by gas treatment device.
Fig. 2 is the figure of a mode of execution of the oil separating structure representing internal-combustion engine of the present invention, is the plan view of the internal-combustion engine possessing blow-by gas treatment device.
Fig. 3 is the figure of a mode of execution of the oil separating structure representing internal-combustion engine of the present invention, is that the III-III direction of Fig. 2 is to looking sectional view.
Fig. 4 is the figure of a mode of execution of the oil separating structure representing internal-combustion engine of the present invention, is the stereogram possessing the internal-combustion engine of blow-by gas treatment device under the state having pulled down valve mechanism cover and chain housing.
Fig. 5 is the figure of a mode of execution of the oil separating structure representing internal-combustion engine of the present invention, is the stereogram of the cylinder block under the state pulling down cover component.
Fig. 6 is the figure of a mode of execution of the oil separating structure representing internal-combustion engine of the present invention, is the enlarged view of oil separation chamber.
Fig. 7 is the figure of a mode of execution of the oil separating structure representing internal-combustion engine of the present invention, is the amplification stereogram of oil separation chamber.
Fig. 8 is the figure of a mode of execution of the oil separating structure representing internal-combustion engine of the present invention, is the stereogram of the cylinder block being provided with cover component.
Fig. 9 is the figure of a mode of execution of the oil separating structure representing internal-combustion engine of the present invention, is the stereogram of cover component.
Figure 10 is the figure of a mode of execution of the oil separating structure representing internal-combustion engine of the present invention, is the figure representing the state that blow-by gas is detained in the 1st oil separation chamber.
description of reference numerals
1 ... motor (internal-combustion engine), 2 ... cylinder block, 2B ... side (side of cylinder block), 3 ... cylinder head, 11 ... timing chain, 17 ... oil separation chamber, 21 ... chain housing, 22 ... chain accommodation chamber, 24 ... crank chamber, 34 ... suction tude, 41 ... oil separation chamber (the 1st oil separation chamber), 41A ... inflow entrance (the 1st inflow entrance), 42 ... oil separation chamber (the 2nd oil separation chamber), 42A ... inflow entrance (the 2nd inflow entrance), 43 ... oil separation chamber (the 3rd oil separation chamber), 44 ... oil separation chamber (the 4th oil separation chamber), 45 ... partition wall (the 1st partition wall), 45A ... intercommunicating pore (the 1st intercommunicating pore), 46 ... partition wall (the 2nd partition wall), 46A ... upper wall portions, 46a ... intercommunicating pore (the 2nd intercommunicating pore), 47 ... impact walls, 49A ... introduction hole
Embodiment
Below, use accompanying drawing that the mode of execution of the oil separating structure of internal-combustion engine of the present invention is described.
Fig. 1 ~ Figure 10 is the figure of the oil separating structure of the internal-combustion engine representing an embodiment of the invention.
First, formation is described.
In Fig. 1 ~ Fig. 4, the motor 1 as internal-combustion engine possesses: cylinder block 2; Cylinder head 3, it is located at the top of cylinder block 2; Valve mechanism cover 4, it is located at the top of cylinder head 3; And oil sump 5, it is located at the bottom of cylinder block 2.
In FIG, the mode being accommodated with to move up and down freely in cylinder block 2 is accommodated in the piston 28 in cylinder 27 and moving up and down of piston 28 is converted to the crankshaft 6 etc. of rotary motion, and the crank housings 2A that crankshaft 6 is rotatably supported is located at the bottom of cylinder block 2 integratedly.In addition, between crank housings 2A and oil sump 5, crank chamber 24 is formed with.
In Fig. 1, Fig. 4, cylinder head 3 possesses: as the admission cam shaft 7 of camshaft, and its orientation along cylinder 27 extends, and possesses intake cam 7a; And as the exhaust cam shaft 8 of camshaft, itself and admission cam shaft 7 configure abreast and orientation along cylinder 27 extends, and possess exhaust cam 8a.
In the motor 1 of present embodiment, the space between the cylinder head 3 of storage admission cam shaft 7 and exhaust cam shaft 8 and valve mechanism cover 4 forms valve cage 13.In addition, admission cam shaft 7 and exhaust cam shaft 8 are rotatably supported in cylinder head 3 by multiple camb cap 3A.
In FIG, be formed with suction port 29 and relief opening 30 in cylinder head 3, driven intake valve 31 and exhaust valve 32 are opened, are closed by the rotation along with intake cam 7a and exhaust cam 8a for suction port 29 and relief opening 30.
In cylinder head 3, be provided with inlet manifold 33, inlet manifold 33 is connected to air-strainer 35 via suction tude 34.Air-strainer 35 purifies the suction air Ai be taken into from outside.
Be inhaled into inlet manifold 33 by the suction air Ai that air-strainer 35 purifies from suction tude 34, be assigned with via each suction port 29 from inlet manifold 33, be drawn into each cylinder 27.
In suction tude 34, be provided with closure 34A, this closure 34A adjustment is inhaled into the air quantity of cylinder 27.
In the diagram, be provided with intake cam sprocket wheel 9 in the end of admission cam shaft 7, intake cam sprocket wheel 9 is wound with timing chain 11.Be provided with exhaust cam sprocket wheel 10 in the end of exhaust cam shaft 8, this exhaust cam sprocket wheel 10 is wound with timing chain 11.
Be provided with crank and chain-wheel 12 in the end of crankshaft 6, crank and chain-wheel 12 is wound with timing chain 11.Thus, the rotation of crankshaft 6 is delivered to intake cam sprocket wheel 9 and exhaust cam sprocket wheel 10 from crank and chain-wheel 12 via timing chain 11, and admission cam shaft 7 and exhaust cam shaft 8 are rotated.
When intake cam 7a and exhaust cam 8a rotates, intake valve 31 and exhaust valve 32 are opened respectively, close suction port 29 and relief opening 30 (with reference to Fig. 1), make the firing chamber 14 (with reference to Fig. 1) being formed at cylinder 27 top be communicated with relief opening 30 with suction port 29, block thus.Such intake valve 31 and exhaust valve 32 are correspondingly worked by the rotation of timing chain 11 with crankshaft 6.
In Fig. 2, Fig. 3, be provided with chain housing 21 in the end (front face side of motor 1) of cylinder block 2 and cylinder head 3.Chain housing 21 covers timing chain 11 and between cylinder block 2 and chain housing 21, forms chain accommodation chamber 22 (with reference to Fig. 3), and chain accommodation chamber 22 is communicated with crank chamber 24.
In Fig. 3, Fig. 5 ~ Fig. 7, form oil separation chamber 17 at the side 2B of cylinder block 2, oil separation chamber 17 possesses 4 oil separation chambers 41 ~ 44.At this, the oil separation chamber 41 of present embodiment forms the 1st oil separation chamber of the present invention, and oil separation chamber 42 forms the 2nd oil separation chamber of the present invention.In addition, the oil separation chamber 43 of present embodiment forms the 3rd oil separation chamber of the present invention, and oil separation chamber 44 forms the 4th oil separation chamber of the present invention.
In oil separation chamber 41, form inflow entrance 41A, inflow entrance 41A is communicated with chain accommodation chamber 22 (with reference to Fig. 3) via the access 23 being formed at cylinder block 2.Thus, the blow-by gas flowing to chain accommodation chamber 22 from crank chamber 24 flows into oil separation chamber 41 from access 23 through inflow entrance 41A.
In oil separation chamber 42, form inflow entrance 42A, inflow entrance 42A is communicated with crank chamber 24 (with reference to Fig. 3) via the access 20 being formed at cylinder block 2.Thus, the blow-by gas of crank chamber 24 flows directly into oil separation chamber 42 from access 20 through inflow entrance 42A.
In addition, the volume of oil separation chamber 41 is formed as larger than the volume of oil separation chamber 42, and the amount being accommodated in the blow-by gas of the per unit volume of the oil separation chamber 41 of present embodiment is more than the amount of blow-by gas of the per unit volume being accommodated in oil separation chamber 42.At this, the inflow entrance 41A of present embodiment forms the 1st inflow entrance of the present invention, and inflow entrance 42A forms the 2nd inflow entrance of the present invention.
Oil separation chamber 43 is arranged between oil separation chamber 41 and oil separation chamber 42.By the partition wall 45 possessing the intercommunicating pore 45A be communicated with oil separation chamber 43, oil separation chamber 41 is separated with oil separation chamber 43.
Be separated with oil separation chamber 43 by oil separation chamber 42 by partition wall 46, partition wall 46 has upper wall portions 46A, and above-mentioned upper wall portions 46A is formed with intercommunicating pore 46a, a part for oil separation chamber 43 is separated in the vertical direction with oil separation chamber 42.At this, the partition wall 45 of present embodiment forms the 1st partition wall of the present invention, and partition wall 46 forms the 2nd partition wall of the present invention.
In oil separation chamber 43, be provided with impact walls 47, impact walls 47 is relative with intercommunicating pore 45A.The width of impact walls 47 is formed as less than the degree of depth of oil separation chamber 43, is directed and flows into oil separation chamber 43 from the blow-by gas in the space that the intercommunicating pore 45A of partition wall 45 flows between partition wall 45 and impact walls 47 at the width direction of impact walls 47.
The oil separation chamber 17 of present embodiment is that oil separation chamber 41 is arranged on chain accommodation chamber 22 side relative to oil separation chamber 42,43.In addition, oil separation chamber 44 is disposed adjacent with oil separation chamber 43 in the side contrary with oil separation chamber 41.
Oil separation chamber 43 and oil separation chamber 44 are separated by partition wall 49.In partition wall 49, be formed with introduction hole 49A, oil separation chamber 43 is communicated with oil separation chamber 44 by introduction hole 49A, makes blow-by gas import oil separation chamber 44 from oil separation chamber 43.
In oil separation chamber 44, be provided with impact walls 50, impact walls 50 is relative with introduction hole 49A.The width of impact walls 50 is formed as less than the degree of depth of oil separation chamber 44, is directed and flows into oil separation chamber 44 from the blow-by gas in the space that the introduction hole 49A of partition wall 49 flows between partition wall 49 and impact walls 50 at the width direction of impact walls 47.
Oil separation chamber 42 and oil separation chamber 44 by the lower part of partition wall 49 from, be formed with oil leaking hole 49B in the bottom of partition wall 49.Oil separation chamber 42 is flowed into from the oil that blow-by gas is separated through oil leaking hole 49B in oil separation chamber 44.
Be formed with oil leaking hole 45b (with reference to Fig. 7) in the bottom of partition wall 45, in oil separation chamber 41, flow into oil separation chamber 43 from the oil that blow-by gas is separated through oil leaking hole 45b.Be formed with oil leaking hole 46b in the bottom of partition wall 46, in oil separation chamber 43, flow into oil separation chamber 42 from the oil that blow-by gas is separated through oil leaking hole 46B.At this, the bottom surface of oil separation chamber 41 ~ 43 tilts downwards along with the bottom surface trend inflow entrance 42A from oil separation chamber 41.
The oil flowing into oil separation chamber 42 from oil separation chamber 41,43,44 flows to inflow entrance 42A along the bottom surface of oil separation chamber 42, flows into access 20 thus, return oil sump 5 through access 20 from inflow entrance 42A.
As shown in Figure 9, be provided with cover component 52 at the side 2B of cylinder block 2 by not shown bolt, as shown in Figure 8, cover component 52 comprises flat plate.Be formed with leadout hole 52a on the top of cover component 52, leadout hole 52a is relative with oil separation chamber 44.
In FIG, leadout hole 52a is communicated with intake manifold 33 via blow-by gas delivery line 36.Therefore, the blow-by gas flowing into oil separation chamber 44 is sucked into suction tude 34 from blow-by gas delivery line 36 through intake manifold 33 due to the negative suction of motor 1.
The blow-by gas being sucked into intake manifold 33 is burnt together with the mixed gas of the firing chamber 14 being imported into motor 1 in firing chamber 14.
Between oil separation chamber 44 and blow-by gas delivery line 36, be provided with Pcv valve 37, Pcv valve 37 adjusts the blow-by gas flow flowing to blow-by gas delivery line 36 from oil separation chamber 44.
In FIG, valve mechanism cover 4 is connected by new gas ingress pipe 38 with the suction tude 34 relative to closure 34A being upstream side, and new gas ingress pipe 38 will suck a part of air Ai, and namely new gas An imports valve cage 13.
In cylinder block 2 and cylinder head 3, be formed with new gas flow into path 39, new gas flows into path 39 and is communicated with crank chamber 24 by valve cage 13.The new gas An importing valve cage 13 due to negative suction from new gas ingress pipe 38 imports oil separation chamber 41 from chain accommodation chamber 22 through access 23 and inflow entrance 41A.
In addition, the new gas An being imported into valve cage 13 flows into path 39 from new gas and is imported into oil separation chamber 42 through crank chamber 24, access 20 and inflow entrance 42A.The blow-by gas being imported into oil separation chamber 41,42 after being inhaled into oil separation chamber 44, is being imported into cylinder 27 from blow-by gas delivery line 36 via inlet manifold 33 through oil separation chamber 43.Thus, the new gas An of inner utilization comprising the motor 1 of valve cage 13, chain accommodation chamber 22 and crank chamber 24 takes a breath.In addition, in the chain accommodation chamber 22 of cylinder block 2, be provided with the oil nozzle 61 to timing chain 11 jet lubrication oil.
Below, illustration.
In chain accommodation chamber 22, spray oil from oil nozzle 61 to timing chain 11 thus carry out the lubrication of timing chain 11.Therefore, when not carrying out the ventilation of chain accommodation chamber 22 fully, generate nitric acid after being imported into the NOx (nitrogen oxide) and reaction of moisture comprised in the blow-by gas of chain accommodation chamber 22, oil condenses due to this nitric acid, produces greasy filth.
This greasy filth is tarry material, when greasy filth is mixed in the oil lubricated motor 1, cause the deterioration of oil, cause the insufficient lubrication of the slide members such as the work of hydraulic system bad or crankshaft 6, admission cam shaft 7 and exhaust cam shaft 8, the slip resistance increase of motor 1 and the fuel efficiency of motor 1 worsen.
In the motor 1 of present embodiment, cylinder block 2 has the access 23 be communicated with chain accommodation chamber 22 by oil separation chamber 41, and access 23 is communicated with oil separation chamber 41 by inflow entrance 41A.
Thus, blow-by gas can be made to flow directly to oil separation chamber 41 from chain accommodation chamber 22.Therefore, directly take a breath by access 23 pairs of chain accommodation chambers 22, can prevent from producing greasy filth in chain accommodation chamber 22.
The blow-by gas flowed towards oil separation chamber 41 through access 23 from chain accommodation chamber 22 flows into oil separation chamber 41 from inflow entrance 41A.This blow-by gas is constriction stream after intercommunicating pore 45A, and flow velocity rises and collides with impact walls 47 thus.
Thus, from blow-by gas separating oil, the oil after separation falls downwards along impact walls 47.
And impact walls 47 is collided and space between impact walls 47 and partition wall 45A of blow-by gas after separated oil and flow into oil separation chamber 43.
On the other hand, the blow-by gas flowed towards oil separation chamber 42 from crank chamber 24 through access 20 flows into oil separation chamber 42 from inflow entrance 42A.The upper wall portions 46A of this blow-by gas and partition wall 46 collides, and thus from blow-by gas separating oil, the oil after separation falls to the bottom surface of oil separation chamber.
Oil separating structure according to the present embodiment, oil separation chamber 17 has: oil separation chamber 41, and it is communicated with chain accommodation chamber 22, has the inflow entrance 41A that the blow-by gas in chain accommodation chamber 22 flows into; And oil separation chamber 42, it is communicated with crank chamber 24, has the inflow entrance 42A that the blow-by gas in crank chamber 24 flows into.
Thus, oil separation chamber 41 can be communicated with crank chamber 24 with chain accommodation chamber 22 by inflow entrance 41A, and oil separation chamber 42 is communicated with crank chamber 24 by inflow entrance 42A.Therefore, when press in crank chamber 24 rise time, the pressure of crank chamber 24 can be dispersed into oil separation chamber 41,42 by inflow entrance 41A, 42A, the pressure increase of crank chamber 24 can be suppressed fast.
Thus, the oil being accumulated in oil sump 5 can be suppressed to flow into oil separation chamber 41,42, can from blow-by gas reliably separating oil in oil separation chamber 41,42.Consequently, the separating property of oil can be improved.
In addition, oil separating structure according to the present embodiment, makes the volume of oil separation chamber 41 be greater than the volume of oil separation chamber 42.Thus, the blow-by gas that flow velocity accelerates due to the to-and-fro motion of piston 28 in crank chamber 24 is imported into the little oil separation chamber of volume ratio oil separation chamber 41 42, can be easy to from blow-by gas separating oil with the upper wall portions 46A high velocity impact of oil separation chamber 42.
On the other hand, be imported into the blow-by gas of oil separation chamber 41 and crank chamber 24 is isolated from crank chamber 24 through chain accommodation chamber 22, the impact caused due to the to-and-fro motion of piston 28 is thus little, and therefore compared with being imported into the blow-by gas of oil separation chamber 42, flow velocity is slower.
Oil separation chamber 41 and oil separation chamber 42 phase specific volume are larger, be therefore imported into the slow blow-by gas of the flow velocity of oil separation chamber 41 by being detained capacious oil separation chamber 41 in, cohesion and promote oily separation.Consequently, in oil separation chamber 41, more effectively can improve the separating property of oil.
Figure 10 is the figure representing the state that blow-by gas B is detained in oil separation chamber 41.As shown in Figure 10, the blow-by gas B that flow velocity is slow is detained in capacious oil separation chamber 41, cohesion is clear and definite.Like this when blow-by gas B delay, cohesion, compared with the blow-by gas of high-speed mobile, can promote that oil is separated from blow-by gas B.
In addition, due to the restriction of the installation space of oil separation chamber 17 in cylinder block 2, the installation space of oil separation chamber 17 cannot be obtained significantly.And in the oil separating structure of present embodiment, even if blow-by gas fast for flow velocity also can be imported oil separation chamber 42 and improve the separating property of oil by the volume reducing oil separation chamber 42, therefore can by reducing the amount of volume of oil separation chamber 42 to reduce the volume of whole oil separation chamber 17.Thus, the installation space of oil separation chamber 17 can be reduced and more effectively improve oily separating property.
In addition, oil separating structure according to the present embodiment, oil separation chamber 17 has the oil separation chamber 43 be arranged between oil separation chamber 41 and oil separation chamber 42, by the partition wall 45 possessing the intercommunicating pore 45A be communicated with oil separation chamber 43, oil separation chamber 41 is separated with oil separation chamber 43, by the partition wall 46 possessing the intercommunicating pore 46a be communicated with oil separation chamber 43, oil separation chamber 42 is separated with oil separation chamber 43.
And partition wall 46 has upper wall portions 46A, above-mentioned upper wall portions 46A has intercommunicating pore 46a, a part for oil separation chamber 43 is separated in the vertical direction with oil separation chamber 42.
Thus, the blow-by gas fast at the flow velocity making to be imported into oil separation chamber 42 and upper wall portions 46A can collide and import oil separation chamber 43 through intercommunicating pore 46a after this blow-by gas efficiently separating oil.
In addition, the blow-by gas being imported into oil separation chamber 41 from chain accommodation chamber 22 is collided with impact walls 47 as mentioned above under the state of the rising of flow velocity after intercommunicating pore 45A, therefore can from blow-by gas separating oil efficiently.
Consequently, be trapped in oil separation chamber 41 by making oil and be isolated, and carry out the separation of oil by impact walls 47, more effectively can improve the separating property of oil.
On the other hand, collide with impact walls 50 state that the blow-by gas flowing into oil separation chamber 43 from oil separation chamber 41,42 rises at flow velocity after introduction hole 49A.Thus, separated less than the oil be separated completely from blow-by gas.
Be separated the blow-by gas after oil to burn together with mixed gas after blow-by gas delivery line 36, intake manifold 33 and suction tude 34 are sucked into firing chamber 14 from the leadout hole 52a of cover component 52 due to the negative suction of motor 1.
Oil separating structure according to the present embodiment, oil separation chamber 41 is arranged on chain accommodation chamber 22 side relative to oil separation chamber 42 and oil separation chamber 43, is adjacent to be provided with oil separation chamber 44 in the side contrary with oil separation chamber 41 and oil separation chamber 43.
Thus, in the mode being clipped oil separation chamber 43 by oil separation chamber 41 and oil separation chamber 44, oil separation chamber 17 can be formed at cylinder block 2.Therefore, can by oil separation chamber 17 with less spatial placement in cylinder block 2.
Although disclose embodiments of the present invention, those skilled in the art understand can not apply change with departing from the scope of the present invention.All this corrections and equivalent is intended to comprise in the claims.
Claims (4)
1. an oil separating structure for internal-combustion engine, has: chain housing, and it is arranged on the end of cylinder block and head, for covering the timing chain driving force of crankshaft being delivered to camshaft; Chain accommodation chamber, it is surrounded by above-mentioned chain housing, above-mentioned cylinder block and above-mentioned cylinder head; Crank chamber, it is formed in the inside of above-mentioned cylinder block, is communicated with above-mentioned chain accommodation chamber; And oil separation chamber, it is formed in the side of above-mentioned cylinder block, and for separating of the oil in blow-by gas, the feature of the oil separating structure of above-mentioned internal-combustion engine is,
Above-mentioned oil separation chamber is separated the oil in the blow-by gas imported from above-mentioned crank chamber and above-mentioned chain accommodation chamber,
Above-mentioned oil separation chamber has: the 1st oil separation chamber, and it has the 1st inflow entrance, and above-mentioned 1st inflow entrance is communicated with above-mentioned chain accommodation chamber, and the blow-by gas in above-mentioned chain accommodation chamber flows into above-mentioned 1st oil separation chamber from above-mentioned 1st inflow entrance; And the 2nd oil separation chamber, it has the 2nd inflow entrance, and above-mentioned 2nd inflow entrance is communicated with above-mentioned crank chamber, and the blow-by gas in above-mentioned crank chamber flows into above-mentioned 2nd oil separation chamber from above-mentioned 2nd inflow entrance.
2. the oil separating structure of internal-combustion engine according to claim 1, is characterized in that,
The volume of above-mentioned 1st oil separation chamber is greater than the volume of above-mentioned 2nd oil separation chamber.
3., according to the oil separating structure of internal-combustion engine according to claim 1 or claim 2, it is characterized in that,
Above-mentioned oil separation chamber has the 3rd oil separation chamber be arranged between above-mentioned 1st oil separation chamber and above-mentioned 2nd oil separation chamber,
Above-mentioned 1st oil separation chamber, it has the 1st partition wall, is separated by above-mentioned 1st oil separation chamber by the 1st partition wall with above-mentioned 3rd oil separation chamber, and above-mentioned 1st partition wall possesses the 1st intercommunicating pore be communicated with above-mentioned 3rd oil separation chamber,
Above-mentioned 2nd oil separation chamber, it has the 2nd partition wall, is separated by above-mentioned 2nd oil separation chamber by the 2nd partition wall with above-mentioned 3rd oil separation chamber, and above-mentioned 2nd partition wall possesses the 2nd intercommunicating pore be communicated with above-mentioned 3rd oil separation chamber,
Above-mentioned 3rd oil separation chamber, it has the impact walls relative with above-mentioned 1st intercommunicating pore,
Above-mentioned 2nd partition wall has upper wall portions, and above-mentioned upper wall portions is formed with above-mentioned 2nd intercommunicating pore, a part for above-mentioned 3rd oil separation chamber is separated in the vertical direction with above-mentioned 2nd oil separation chamber.
4. the oil separating structure of internal-combustion engine according to claim 3, is characterized in that,
Above-mentioned 1st oil separation chamber is located at above-mentioned chain accommodation chamber side relative to above-mentioned 2nd oil separation chamber and above-mentioned 3rd oil separation chamber,
4th oil separation chamber is arranged on the contrary side being positioned at above-mentioned 1st oil separation chamber relative to above-mentioned 3rd oil separation chamber, adjacent with above-mentioned 3rd oil separation chamber, above-mentioned 4th oil separation chamber has introduction hole, this introduction hole for import in above-mentioned 3rd oil separation chamber oil separated after blow-by gas, make the blow-by gas imported through above-mentioned introduction hole flow to suction tude.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014-186176 | 2014-09-12 | ||
| JP2014186176A JP6394215B2 (en) | 2014-09-12 | 2014-09-12 | Oil separation structure of internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
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| CN105422214A true CN105422214A (en) | 2016-03-23 |
| CN105422214B CN105422214B (en) | 2018-04-13 |
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| CN201510579335.8A Expired - Fee Related CN105422214B (en) | 2014-09-12 | 2015-09-11 | The oil separating structure of internal combustion engine |
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| Country | Link |
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| JP (1) | JP6394215B2 (en) |
| CN (1) | CN105422214B (en) |
| DE (1) | DE102015217372B4 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107524543A (en) * | 2016-06-17 | 2017-12-29 | 本田技研工业株式会社 | Internal combustion engine |
| CN109944711A (en) * | 2019-04-29 | 2019-06-28 | 玉柴联合动力股份有限公司 | A kind of diesel motor cylinder that can reach six standard oil-gas separation efficiency of state |
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- 2015-09-11 DE DE102015217372.0A patent/DE102015217372B4/en active Active
- 2015-09-11 CN CN201510579335.8A patent/CN105422214B/en not_active Expired - Fee Related
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| US20020017283A1 (en) * | 2000-05-23 | 2002-02-14 | Akira Furuya | Breather system for engine |
| JP2005009445A (en) * | 2003-06-20 | 2005-01-13 | Yamaha Motor Co Ltd | Cooling water chamber for v-type engine and breather chamber structure |
| JP4467916B2 (en) * | 2003-06-24 | 2010-05-26 | 本田技研工業株式会社 | Breather device for internal combustion engine |
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| CN107524543A (en) * | 2016-06-17 | 2017-12-29 | 本田技研工业株式会社 | Internal combustion engine |
| CN107524543B (en) * | 2016-06-17 | 2021-03-30 | 本田技研工业株式会社 | Support structure for internal combustion engine |
| CN109944711A (en) * | 2019-04-29 | 2019-06-28 | 玉柴联合动力股份有限公司 | A kind of diesel motor cylinder that can reach six standard oil-gas separation efficiency of state |
| CN109944711B (en) * | 2019-04-29 | 2024-04-30 | 玉柴联合动力股份有限公司 | Diesel engine cylinder block capable of achieving national six-standard oil-gas separation efficiency |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102015217372B4 (en) | 2020-02-20 |
| DE102015217372A1 (en) | 2016-03-17 |
| JP6394215B2 (en) | 2018-09-26 |
| JP2016056783A (en) | 2016-04-21 |
| CN105422214B (en) | 2018-04-13 |
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