CN105422214B - The oil separating structure of internal combustion engine - Google Patents
The oil separating structure of internal combustion engine Download PDFInfo
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- CN105422214B CN105422214B CN201510579335.8A CN201510579335A CN105422214B CN 105422214 B CN105422214 B CN 105422214B CN 201510579335 A CN201510579335 A CN 201510579335A CN 105422214 B CN105422214 B CN 105422214B
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- mentioned
- separation chamber
- oil separation
- oil
- gas
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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
- 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 oil separating structure that the present invention, which provides, can suppress the internal pressure rising of crank chamber, can improve the internal combustion engine of oily separating property.Oil separating structure has and will have arranged on the side of cylinder block (2) from the oily separated oil separation chamber (17) in crank chamber and the blow-by gas of chain receiving room importing, oil separation chamber (17)：Oil separation chamber (41), it is with inflow entrance (41A), inflow entrance (41A) is connected with chain receiving room, and the blow-by gas in chain receiving room (22) flows into oil separation chamber (41) from inflow entrance (41A)；And oil separation chamber (42), it is with inflow entrance (42A), inflow entrance (42A) is connected with crank chamber, the indoor blow-by gas of crank flows into oil separation chamber (42) from inflow entrance (42A), and the volume of the volumetric ratio oil separation chamber (42) of oil separation chamber (41) is big.
Description
Technical field
The present invention relates to the oil separating structure of internal combustion engine, more particularly to the oil of the internal combustion engine from blow-by gas separation oil
From structure.
Background technology
In the past, the oil separating structure as the internal combustion engine for being equipped on automobile etc., it is known that possess from blow-by gas separation oil
Divide the device of grease chamber (equivalent to oil separation chamber) (referring for example to patent document 1).This divides the side that grease chamber is formed at cylinder block, point
Grease chamber is connected by blow-by gas entrance hole with crank chamber.
Multiple oil baffles are equipped with grease chamber is divided, flow into the blowby gas for dividing grease chamber by blow-by gas entrance hole from crank chamber
Body separates oil with after oil baffle collision from blow-by gas.
The blow-by gas after oil is separated from dividing grease chamber to be fed again into combustion chamber by air inlet pipe, in a combustion chamber with mixing
Gas is closed to burn again together.Thus, it can prevent the oil for being accumulated in oil sump from being deteriorated due to blow-by gas.
Prior art literature
Patent document
Patent document 1：Open clear 64-3015 publications in fact
The content of the invention
Problems to be solved by the invention
But the oil separating structure of this existing internal combustion engine be only point grease chamber via 1 blow-by gas entrance hole with it is bent
Handle room connects.Therefore, when the internal pressure of crank chamber becomes higher, the pressure of crank chamber is dispersed into a point oil by blow-by gas entrance hole
Room, therefore can not quickly reduce the indoor pressure of crank, it is difficult to the internal pressure for suppressing crank chamber rises.
Therefore, the oil for lodging in oil sump divides grease chamber by the inflow of blow-by gas entrance hole, is hindered and can not be held by the oil
Change places and separate oil from blow-by gas in grease chamber is divided, oily separating property is possible to deteriorate.
The present invention is conceived to above-mentioned this problem and completes, and its purpose is to provide can suppress in the internal pressure of crank chamber
Rise, can improve oily separating property internal combustion engine oil separating structure.
The solution used to solve the problem
The present invention is the oil separating structure of internal combustion engine, is had：Chain housing, it is installed on the end of cylinder block and head,
The driving force of crank axle is delivered to the timing chain of camshaft for covering；Chain receiving room, it is by chain housing, cylinder block and gas
Cylinder cap surrounds；Crank chamber, it is formed in the inside of cylinder block, is connected with chain receiving room；And oil separation chamber, it is formed in cylinder
The side of body, for separating the oil in blow-by gas, oil separation chamber is to from crank chamber and the blow-by gas of chain receiving room importing
Oil separated, oil separation chamber has：1st oil separation chamber, it has the 1st inflow entrance, and the 1st inflow entrance connects with chain receiving room
Logical, chain stores indoor blow-by gas and flows into the 1st oil separation chamber from the 1st inflow entrance；And the 2nd oil separation chamber, it has the 2nd stream
Entrance, the 2nd inflow entrance are connected with crank chamber, and the indoor blow-by gas of crank flows into the 2nd oil separation chamber from the 2nd inflow entrance.
Invention effect
According to the present invention, oil separation chamber has：1st oil separation chamber, it has the 1st inflow entrance, above-mentioned 1st inflow entrance and chain
Receiving room connects, and chain stores indoor blow-by gas and flows into the 1st oil separation chamber from above-mentioned 1st inflow entrance；And the 2nd oil separation
Room, it has the 2nd inflow entrance, and above-mentioned 2nd inflow entrance is connected with crank chamber, and the indoor blow-by gas of crank is flowed into from the above-mentioned 2nd
Mouth flows into the 2nd oil separation chamber.
Thus, oil separation chamber can be made to pass through the 1st inflow entrance and chain receiving room to be connected with crank chamber, and passes through the 2nd stream
Entrance and connected with crank chamber.Therefore, when the internal pressure of crank chamber rises, can by the pressure of crank chamber by the 1st inflow entrance and
2nd inflow entrance is dispersed into oil separation chamber, and the pressure that can quickly suppress crank chamber rises.
Thus, such as it can suppress to lodge in the oil stream of oil sump and enter oil separation chamber, can be in oil separation chamber from blow-by gas
It is reliably separated oil.As a result, the separating property of oil can be improved.
Brief description of the drawings
Fig. 1 is the figure of an embodiment of the oil separating structure for representing the internal combustion engine of the present invention, is blow-by gas processing
The summary of device forms figure.
Fig. 2 is the figure of an embodiment of the oil separating structure for representing the internal combustion engine of the present invention, is to possess blow-by gas
The front view of the internal combustion engine of processing unit.
Fig. 3 is the figure of an embodiment of the oil separating structure for representing the internal combustion engine of the present invention, is the III-III of Fig. 2
Direction is to regarding sectional view.
Fig. 4 is the figure of an embodiment of the oil separating structure for representing the internal combustion engine of the present invention, is to have pulled down cylinder head
The stereogram of the internal combustion engine for possessing blow-by gas processing unit in the state of cover and chain housing.
Fig. 5 is the figure of an embodiment of the oil separating structure for representing the internal combustion engine of the present invention, pulls down cover component
The stereogram of cylinder block under state.
Fig. 6 is the figure of an embodiment of the oil separating structure for representing the internal combustion engine of the present invention, is putting for oil separation chamber
Big figure.
Fig. 7 is the figure of an embodiment of the oil separating structure for representing the internal combustion engine of the present invention, is putting for oil separation chamber
Big stereogram.
Fig. 8 is the figure of an embodiment of the oil separating structure for representing the internal combustion engine of the present invention, is to be provided with cover component
Cylinder block stereogram.
Fig. 9 is the figure of an embodiment of the oil separating structure for representing the internal combustion engine of the present invention, is the solid of cover component
Figure.
Figure 10 is the figure of an embodiment of the oil separating structure for representing the internal combustion engine of the present invention, is represented in the 1st oil
The figure for the state that blow-by gas is detained in separation chamber.
Description of reference numerals
1 ... engine (internal combustion engine), 2 ... cylinder block, 2B ... sides (side of cylinder block), 3 ... cylinder head, 11 ... timings
Chain, 17 ... oil separation chambers, 21 ... chain housings, 22 ... chain receiving rooms, 24 ... crank chambers, 34 ... air inlet pipe, 41 ... oil separation chambers (
1 oil separation chamber), 41A ... inflow entrances (the 1st inflow entrance), 42 ... oil separation chambers (the 2nd oil separation chamber), 42A ... inflow entrances (the 2nd stream
Entrance), 43 ... oil separation chambers (the 3rd oil separation chamber), 44 ... oil separation chambers (the 4th oil separation chamber), 45 ... partition walls (the 1st separate
Wall), 45A ... intercommunicating pores (the 1st intercommunicating pore), 46 ... partition walls (the 2nd partition wall), 46A ... upper wall portions, 46a ... intercommunicating pores the (the 2nd
Intercommunicating pore), 47 ... impact walls, 49A ... entrance holes
Embodiment
Hereinafter, using the embodiment for the oil separating structure for illustrating internal combustion engine of the invention.
Fig. 1~Figure 10 is the figure of the oil separating structure for the internal combustion engine for representing an embodiment of the invention.
First, illustrate to form.
In Fig. 1~Fig. 4, the engine 1 as internal combustion engine possesses：Cylinder block 2；Cylinder head 3, it is arranged on cylinder block 2
Top；Valve mechanism cover 4, it is arranged on the top of cylinder head 3；And oil sump 5, it is arranged on the lower part of cylinder block 2.
In Fig. 1, the piston 28 being accommodated in a manner of moving up and down freely in cylinder 27 is accommodated with cylinder block 2
And the up and down motion of piston 28 is converted to the crank axle 6 of rotary motion etc., crank axle 6 is rotatably propped up it
The crank housings 2A of support is integratedly arranged on the lower part of cylinder block 2.In addition, formed with song between crank housings 2A and oil sump 5
Handle room 24.
In Fig. 1, Fig. 4, cylinder head 3 possesses：As the admission cam shaft 7 of camshaft, its arrangement side along cylinder 27
To extension, possesses admission cam 7a；And the exhaust cam shaft 8 as camshaft, it is abreast configured simultaneously with admission cam shaft 7
Extend along the orientation of cylinder 27, possess exhaust cam 8a.
In the engine 1 of present embodiment, the cylinder head 3 and cylinder head of admission cam shaft 7 and exhaust cam shaft 8 are stored
Space between cover 4 forms cavaera 13.In addition, admission cam shaft 7 and exhaust cam shaft 8 are rotated freely by multiple camb cap 3A
Ground is supported in cylinder head 3.
In Fig. 1, in cylinder head 3 formed with air inlet 29 and exhaust outlet 30, air inlet 29 and exhaust outlet 30 by with
The rotation of admission cam 7a and exhaust cam 8a and powered inlet valve 31 and exhaust valve 32 are opened, closed.
Inlet manifold 33 is installed in cylinder head 3, inlet manifold 33 is connected to air cleaner 35 via air inlet pipe 34.
Air cleaner 35 purifies the suction air Ai being taken into from outside.
Inlet manifold 33 is inhaled into from air inlet pipe 34 by the suction air Ai that air cleaner 35 purifies, from inlet manifold 33
It is allocated via each air inlet 29, is drawn into each cylinder 27.
Air throttle 34A is equipped with air inlet pipe 34, air throttle 34A adjusts the air capacity for being inhaled into cylinder 27.
In Fig. 4, admission cam sprocket wheel 9 is equipped with the end of admission cam shaft 7, admission cam sprocket wheel 9 is wound with timing
Chain 11.Exhaust cam sprocket wheel 10 is equipped with the end of exhaust cam shaft 8, which is wound with timing chain 11.
Crank and chain-wheel 12 is equipped with the end of crank axle 6, crank and chain-wheel 12 is wound with timing chain 11.Thus, crank axle 6
Rotation is delivered to admission cam sprocket wheel 9 and exhaust cam sprocket wheel 10 from crank and chain-wheel 12 via timing chain 11, makes admission cam shaft 7
Rotated with exhaust cam shaft 8.
When admission cam 7a and exhaust cam 8a rotates, inlet valve 31 and exhaust valve 32 are opened, close air inlet respectively
29 and exhaust outlet 30 (with reference to Fig. 1), thus make combustion chamber 14 (with reference to Fig. 1) and the air inlet 29 and row for being formed at 27 top of cylinder
Gas port 30 is connected, blocked.So inlet valve 31 and exhaust valve 32 are correspondingly worked by timing chain 11 and the rotation of crank axle 6.
In Fig. 2, Fig. 3, in the end of cylinder block 2 and cylinder head 3, (front face side of engine 1) is equipped with chain housing 21.Chain
Housing 21 covers timing chain 11 and chain receiving room 22 (with reference to Fig. 3), chain receiving room is formed between cylinder block 2 and chain housing 21
22 connect with crank chamber 24.
In Fig. 3, Fig. 5~Fig. 7, oil separation chamber 17 is formed in the side 2B of cylinder block 2, oil separation chamber 17 possesses 4 oil
Separation chamber 41~44.Here, the oil separation chamber 41 of present embodiment forms the 1st oil separation chamber of the present invention, 42 structure of oil separation chamber
Into 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, oil
From the 4th oil separation chamber that room 44 forms the present invention.
Inflow entrance 41A is formed in oil separation chamber 41, inflow entrance 41A is through being formed from the access 23 and chain of cylinder block 2
Receiving room 22 connects (with reference to Fig. 3).Thus, the blow-by gas of chain receiving room 22 is flowed to from crank chamber 24 from access 23 through overcurrent
Entrance 41A flows into oil separation chamber 41.
Form inflow entrance 42A in oil separation chamber 42, inflow entrance 42A through be formed from the access 20 of cylinder block 2 with it is bent
Handle room 24 connects (with reference to Fig. 3).Thus, the blow-by gas of crank chamber 24 flows directly into oil from access 20 by inflow entrance 42A
Separation chamber 42.
In addition, the volume of oil separation chamber 41 is formed as bigger than the volume of oil separation chamber 42, the oil of present embodiment is accommodated in
The blow-by gas of per unit volume of the amount of the blow-by gas of the per unit volume of separation chamber 41 than being accommodated in oil separation chamber 42
Amount is more.Here, the inflow entrance 41A of present embodiment forms the 1st inflow entrance of the present invention, inflow entrance 42A forms the 2nd of the present invention
Inflow entrance.
Oil separation chamber 43 is arranged between oil separation chamber 41 and oil separation chamber 42.By possessing the company connected with oil separation chamber 43
The partition wall 45 of through hole 45A separates oil separation chamber 41 with oil separation chamber 43.
Oil separation chamber 42 is separated with oil separation chamber 43 by partition wall 46, partition wall 46 has upper wall portions 46A, above-mentioned upper wall
Portion 46A separates a part for oil separation chamber 43 and oil separation chamber 42 formed with intercommunicating pore 46a in the up-down direction.Here, this
The partition wall 45 of embodiment forms the 1st partition wall of the present invention, and partition wall 46 forms the 2nd partition wall of the present invention.
Impact walls 47 are equipped with oil separation chamber 43, impact walls 47 are opposite with intercommunicating pore 45A.The width of impact walls 47 is formed
It is small for the depth than oil separation chamber 43, the space between partition wall 45 and impact walls 47 is flowed into from the intercommunicating pore 45A of partition wall 45
Blow-by gas be directed on the width of impact walls 47 and flow into oil separation chamber 43.
The oil separation chamber 17 of present embodiment is that oil separation chamber 41 is arranged on chain receiving room 22 relative to oil separation chamber 42,43
Side.In addition, oil separation chamber 44 is disposed adjacent in the side opposite with oil separation chamber 41 with oil separation chamber 43.
Oil separation chamber 43 and oil separation chamber 44 are separated by partition wall 49.Formed with entrance hole 49A in partition wall 49, import
Hole 49A connects oil separation chamber 43 with oil separation chamber 44, blow-by gas is imported oil separation chamber 44 from oil separation chamber 43.
Impact walls 50 are equipped with oil separation chamber 44, impact walls 50 are opposite with entrance hole 49A.The width of impact walls 50 is formed
It is small for the depth than oil separation chamber 44, the space between partition wall 49 and impact walls 50 is flowed into from the entrance hole 49A of partition wall 49
Blow-by gas be directed on the width of impact walls 47 and flow into oil separation chamber 44.
Oil separation chamber 42 and oil separation chamber 44 are separated by the lower part of partition wall 49, in the lower part of partition wall 49 formed with oil leak
Hole 49B.In oil separation chamber 44 oil separation chamber 42 is flowed into by oil leaking hole 49B from blow-by gas by separated oil.
In the bottom of partition wall 45 formed with oil leaking hole 45b (with reference to Fig. 7), divided in oil separation chamber 41 from blow-by gas
From oil by oil leaking hole 45b flow into oil separation chamber 43.In the lower part of partition wall 46 formed with oil leaking hole 46b, in oil separation chamber
In 43 oil separation chamber 42 is flowed into by oil leaking hole 46B from blow-by gas by separated oil.Here, the bottom surface of oil separation chamber 41~43
Tilted downwards with mouthful 42A is tended to flow into from the bottom surface of oil separation chamber 41.
The oil that oil separation chamber 42 is flowed into from oil separation chamber 41,43,44 flows to inflow entrance along the bottom surface of oil separation chamber 42
42A, thus flows into access 20 from inflow entrance 42A, and oil sump 5 is returned by access 20.
As shown in figure 9, the not shown bolts of side 2B in cylinder block 2 are provided with cover component 52, as shown in figure 8, cover
Component 52 includes flat plate.On the top of cover component 52 formed with leadout hole 52a, leadout hole 52a and 44 phase of oil separation chamber
It is right.
In Fig. 1, leadout hole 52a is connected via blow-by gas delivery line 36 with inlet manifold 33.Therefore, oil separation is flowed into
The blow-by gas of room 44 is sucked into due to the negative suction of engine 1 from blow-by gas delivery line 36 by inlet manifold 33
Air inlet pipe 34.
The blow-by gas for being sucked into inlet manifold 33 together with the mixed gas for the combustion chamber 14 for being imported into engine 1
Burn in combustion chamber 14.
Pcv valve 37 is equipped between oil separation chamber 44 and blow-by gas delivery line 36, Pcv valve 37 is adjusted from oil separation chamber 44
Flow to the blow-by gas flow of blow-by gas delivery line 36.
In Fig. 1, valve mechanism cover 4 and relative to air throttle 34A be upstream side air inlet pipe 34 connected by new gas ingress pipe 38
Connect, new gas ingress pipe 38 will suck a part of air Ai, i.e., new gas An imports cavaera 13.
Path 39 is flowed into formed with new gas in cylinder block 2 and cylinder head 3, new gas flows into path 39 by cavaera 13 and song
Handle room 24 connects.The new gas An for importing cavaera 13 from new gas ingress pipe 38 due to negative suction passes through company from chain receiving room 22
Path 23 and inflow entrance 41A import oil separation chamber 41.
In addition, be imported into the new gas An of cavaera 13 from new gas flow into path 39 by crank chamber 24, access 20 and
Inflow entrance 42A is imported into oil separation chamber 42.The blow-by gas for being imported into oil separation chamber 41,42 is inhaled by oil separation chamber 43
After entering oil separation chamber 44, cylinder 27 is imported into from blow-by gas delivery line 36 via inlet manifold 33.Including cavaera thus,
13rd, the new gas An of the inner utilization of chain receiving room 22 and the engine of crank chamber 24 1 takes a breath.In addition, in the chain of cylinder block 2
The oil burner nozzle 61 that lubrication oil is sprayed to timing chain 11 is equipped with receiving room 22.
In the following, illustration.
In chain receiving room 22, oil is sprayed from oil burner nozzle 61 to timing chain 11 so as to carry out the lubrication of timing chain 11.Therefore,
When not being sufficiently carried out the ventilation of chain receiving room 22, NOx (nitrogen included in the blow-by gas of chain receiving room 22 is imported into
Oxide) with generating nitric acid after reaction of moisture, oil is agglomerated due to the nitric acid, produces greasy filth.
The greasy filth is the material of tarry, when greasy filth is mixed into the oil being lubricated to engine 1, causes the bad of oil
Change, cause the lubrication of the sliding components such as the bad or crank axle 6 of work, admission cam shaft 7 and the exhaust cam shaft 8 of hydraulic system
It is bad, the resistance to sliding increase of engine 1 and the fuel efficiency deterioration of engine 1.
In the engine 1 of present embodiment, cylinder block 2 has the connection for connecting oil separation chamber 41 with chain receiving room 22
Road 23, access 23 are connected by inflow entrance 41A with oil separation chamber 41.
Thus, blow-by gas can be made to flow directly to oil separation chamber 41 from chain receiving room 22.It is accordingly, it is capable to right by access 23
Chain receiving room 22 is directly taken a breath, and can prevent from producing greasy filth in chain receiving room 22.
From chain receiving room 22 by access 23 oil is flowed into towards the blow-by gas that oil separation chamber 41 flows from inflow entrance 41A
Separation chamber 41.The blow-by gas passes through intercommunicating pore 45A retraction narrow flows road, and thus flow velocity rises and collided with impact walls 47.
Thus, oil is separated from blow-by gas, the oil after separation is fallen downwards along impact walls 47.
Collided with impact walls 47 and separated the blow-by gas after oil by the sky between impact walls 47 and partition wall 45A
Between and flow into oil separation chamber 43.
On the other hand, from crank chamber 24 by access 20 towards the blow-by gas that oil separation chamber 42 flows from inflow entrance
42A flows into oil separation chamber 42.The blow-by gas and the upper wall portions 46A of partition wall 46 are collided, and thus separate oil from blow-by gas, point
Oil from after is fallen to the bottom surface of oil separation chamber.
Oil separating structure according to the present embodiment, oil separation chamber 17 have：Oil separation chamber 41, it connects with chain receiving room 22
It is logical, there is the inflow entrance 41A that the blow-by gas in chain receiving room 22 flows into；And oil separation chamber 42, it is connected with crank chamber 24,
The inflow entrance 42A flowed into the blow-by gas in crank chamber 24.
Thus, oil separation chamber 41 can be connected by inflow entrance 41A and chain receiving room 22 with crank chamber 24, and by oil
Separation chamber 42 is connected by inflow entrance 42A with crank chamber 24.Therefore, can be by crank chamber when the internal pressure of crank chamber 24 rises
24 pressure is dispersed into oil separation chamber 41,42 by inflow entrance 41A, 42A, and the pressure that can quickly suppress crank chamber 24 rises.
Thus, the oil stream that can suppress to be accumulated in oil sump 5 enters oil separation chamber 41,42, can be in oil separation chamber 41,42 from altering
Gas leakage body is reliably separated oil.As a result, 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 more than the appearance of oil separation chamber 42
Product.Thus, in crank chamber 24 due to piston 28 reciprocating motion and blow-by gas that flow velocity accelerates is imported into volumetric ratio oil
The oil separation chamber 42 small from room 41, the upper wall portions 46A high velocity impacts with oil separation chamber 42 are so as to be readily susceptible to separate from blow-by gas
Oil.
On the other hand, the blow-by gas and crank chamber 24 of oil separation chamber 41 are imported into by chain receiving room 22 from crank chamber 24
Isolation, thus due to influencing small, the blow-by gas phase with being imported into oil separation chamber 42 caused by the reciprocating motion of piston 28
Than flow velocity is slower.
The volume bigger compared with oil separation chamber 42 of oil separation chamber 41, therefore the blowby that the flow velocity that is imported into oil separation chamber 41 is slow
Gas can promote the separation of oil by being detained in capacious oil separation chamber 41, agglomerating.As a result, can be in oil separation chamber
The separating property of oil is more effectively improved in 41.
Figure 10 is the figure for representing the state that blow-by gas B is detained in oil separation chamber 41.As shown in Figure 10, flow velocity is slow alters
Gas leakage body B is detained in capacious oil separation chamber 41, cohesion is clear and definite.So when blow-by gas B is detained, agglomerates, with
The blow-by gas of high-speed mobile is compared, and oil can be promoted to be separated from blow-by gas B.
Further, since the limitation of installation space of the oil separation chamber 17 in cylinder block 2, can not significantly obtain oil separation chamber
17 installation space.And in the oil separating structure of present embodiment, also can be by flow velocity even if the volume for reducing oil separation chamber 42
Fast blow-by gas imports oil separation chamber 42 and improves the separating property of oil, therefore can be by the volume that can reduce oil separation chamber 42
Measure 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 improved
The separating property of oil.
In addition, oil separating structure according to the present embodiment, oil separation chamber 17, which has, is arranged on oil separation chamber 41 and oil
From the oil separation chamber 43 between room 42, by possessing the partition wall 45 of the intercommunicating pore 45A connected with oil separation chamber 43 by oil separation chamber
41 separate with oil separation chamber 43, by possess the partition wall 46 of the intercommunicating pore 46a connected with oil separation chamber 43 by oil separation chamber 42 with
Oil separation chamber 43 separates.
Moreover, partition wall 46 has upper wall portions 46A, above-mentioned upper wall portions 46A has intercommunicating pore 46a, by oil separation chamber 43
A part and oil separation chamber 42 separate in the up-down direction.
Thus, can be altered from this colliding the fast blow-by gas of the flow velocity for being imported into oil separation chamber 42 and upper wall portions 46A
Gas leakage body efficiently separates and imports oil separation chamber 43 by intercommunicating pore 46a after oil.
In addition, the blow-by gas of oil separation chamber 41 is imported into as described above after intercommunicating pore 45A from chain receiving room 22
Flow velocity collides in the state of rising with impact walls 47, therefore can efficiently separate oil from blow-by gas.
As a result, can be isolated by making oil be trapped in oil separation chamber 41, and can by impact walls 47 into
The separation of row oil, can more effectively improve the separating property of oil.
On the other hand, the blow-by gas of oil separation chamber 43 is flowed into the flow velocity after entrance hole 49A from oil separation chamber 41,42
Collided in the state of rising with impact walls 50.Thus, the oil not being kept completely separate from blow-by gas is separated.
The blow-by gas after oil has been separated due to the negative suction of engine 1 and has been passed through from the leadout hole 52a of cover component 52
Blow-by gas delivery line 36, inlet manifold 33 and air inlet pipe 34 are sucked into behind combustion chamber 14 and one combust of mixed gas.
Oil separating structure according to the present embodiment, oil separation chamber 41 are set relative to oil separation chamber 42 and oil separation chamber 43
In 22 side of chain receiving room, it is adjacent in the side opposite with oil separation chamber 41 and oil separation chamber 43 equipped with oil separation chamber 44.
Thus, oil separation chamber 17 can be formed in a manner of clipping oil separation chamber 43 by oil separation chamber 41 and oil separation chamber 44
In cylinder block 2.Accordingly, it is capable to oil separation chamber 17 is arranged at cylinder block 2 with the space of smaller.
Although disclosing embodiments of the present invention, it will be appreciated that the scope of the present invention can not departed from
Ground applies change.It is intended to include all this amendments and equivalent in the claims.
Claims (4)
1. a kind of oil separating structure of internal combustion engine, has：Chain housing, it is installed on the end of cylinder block and head, for covering
The driving force of crank axle is delivered to the timing chain of camshaft by lid；Chain receiving room, its by above-mentioned chain housing, above-mentioned cylinder block and
Above-mentioned cylinder head is surrounded；Crank chamber, it is formed in the inside of above-mentioned cylinder block, is connected with above-mentioned chain receiving room；And oil separation
Room, it is formed in the side of above-mentioned cylinder block, for separating the oil in blow-by gas, the spy of the oil separating structure of above-mentioned internal combustion engine
Sign is,
Above-mentioned oil separation chamber to from above-mentioned crank chamber and above-mentioned chain receiving room importing blow-by gas in oil separate,
Above-mentioned oil separation chamber has：1st oil separation chamber, it has the 1st inflow entrance, above-mentioned 1st inflow entrance and above-mentioned chain receiving room
Connection, above-mentioned chain store indoor blow-by gas and flow into above-mentioned 1st oil separation chamber from above-mentioned 1st inflow entrance；And the 2nd oil separation
Room, it has the 2nd inflow entrance, and above-mentioned 2nd inflow entrance is connected with above-mentioned crank chamber, and the above-mentioned indoor blow-by gas of crank is from above-mentioned
2nd inflow entrance flows into above-mentioned 2nd oil separation chamber.
2. the oil separating structure of internal combustion engine according to claim 1, it is characterised in that
The volume of above-mentioned 1st oil separation chamber is more than the volume of above-mentioned 2nd oil separation chamber.
3. the oil separating structure of the internal combustion engine according to claim 1 or claim 2, it is characterised in that
Above-mentioned oil separation chamber has the 3rd oil separation chamber being 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, by the 1st partition wall by above-mentioned 1st oil separation chamber and the above-mentioned 3rd
Oil separation chamber separates, and above-mentioned 1st partition wall possesses the 1st intercommunicating pore connected with above-mentioned 3rd oil separation chamber,
Above-mentioned 2nd oil separation chamber, it has the 2nd partition wall, by the 2nd partition wall by above-mentioned 2nd oil separation chamber and the above-mentioned 3rd
Oil separation chamber separates, and above-mentioned 2nd partition wall possesses the 2nd intercommunicating pore connected with above-mentioned 3rd oil separation chamber,
Above-mentioned 3rd oil separation chamber, it has the impact walls opposite with above-mentioned 1st intercommunicating pore,
Above-mentioned 2nd partition wall has upper wall portions, and above-mentioned upper wall portions are formed with above-mentioned 2nd intercommunicating pore, by above-mentioned 3rd oil separation chamber
A part of and above-mentioned 2nd oil separation chamber separates in the up-down direction.
4. the oil separating structure of internal combustion engine according to claim 3, it is characterised in that
Above-mentioned 1st oil separation chamber is arranged on above-mentioned chain receiving room side relative to above-mentioned 2nd oil separation chamber and above-mentioned 3rd oil separation chamber,
The 4th oil separation chamber is disposed adjacently with above-mentioned 3rd oil separation chamber, above-mentioned 4th oil separation chamber has entrance hole, the importing
Hole is used to import the blow-by gas after oil is separated in above-mentioned 3rd oil separation chamber, makes the blowby imported by above-mentioned entrance hole
Gas flows to air inlet pipe.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014186176A JP6394215B2 (en) | 2014-09-12 | 2014-09-12 | Oil separation structure of internal combustion engine |
| JP2014-186176 | 2014-09-12 |
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| Publication Number | Publication Date |
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| CN105422214A CN105422214A (en) | 2016-03-23 |
| CN105422214B true CN105422214B (en) | 2018-04-13 |
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| JP (1) | JP6394215B2 (en) |
| CN (1) | CN105422214B (en) |
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| JP6396366B2 (en) * | 2016-06-17 | 2018-09-26 | 本田技研工業株式会社 | Support structure for internal combustion engine body |
| 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 |
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| CN101240726A (en) * | 2007-02-09 | 2008-08-13 | 本田技研工业株式会社 | Aerating device for internal combustion engine |
| JP4342283B2 (en) * | 2003-11-26 | 2009-10-14 | 本田技研工業株式会社 | Breather structure of internal combustion engine |
| 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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| JPS643015A (en) | 1987-03-28 | 1989-01-06 | Sumitomo Electric Ind Ltd | Superconducting material and production thereof |
| JPH0627778Y2 (en) * | 1987-06-25 | 1994-07-27 | マツダ株式会社 | Engine oil separator structure |
| JP3859041B2 (en) * | 1998-05-30 | 2006-12-20 | スズキ株式会社 | Blow-by gas passage structure of internal combustion engine |
| JP3840037B2 (en) * | 2000-05-23 | 2006-11-01 | 富士重工業株式会社 | Engine breather equipment |
| JP2005009445A (en) * | 2003-06-20 | 2005-01-13 | Yamaha Motor Co Ltd | Cooling water chamber for v-type engine and breather chamber structure |
| JP2008057501A (en) * | 2006-09-01 | 2008-03-13 | Toyota Motor Corp | Oil separator for engine |
| AT506467B1 (en) * | 2009-06-15 | 2010-12-15 | Avl List Gmbh | INTERNAL COMBUSTION ENGINE WITH PRESSURE-FREE LUBRICATION |
| JP2011032889A (en) * | 2009-07-30 | 2011-02-17 | Kojima Press Industry Co Ltd | Oil separator for blow-by gas |
| EP2754864B1 (en) * | 2011-09-06 | 2017-04-05 | Toyota Jidosha Kabushiki Kaisha | Engine ventilation apparatus |
| KR101327058B1 (en) * | 2012-02-21 | 2013-11-20 | 기아자동차주식회사 | Apparatus for separating blow by gas and engine oil of vehicle engine and ventilation structure of blow by gas |
| JP6252144B2 (en) * | 2013-12-06 | 2017-12-27 | スズキ株式会社 | Blow-by gas processing device for internal combustion engine |
| JP6329802B2 (en) * | 2014-03-31 | 2018-05-23 | ダイハツ工業株式会社 | Internal combustion engine |
-
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- 2014-09-12 JP JP2014186176A patent/JP6394215B2/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4467916B2 (en) * | 2003-06-24 | 2010-05-26 | 本田技研工業株式会社 | Breather device for internal combustion engine |
| JP4342283B2 (en) * | 2003-11-26 | 2009-10-14 | 本田技研工業株式会社 | Breather structure of internal combustion engine |
| CN101240726A (en) * | 2007-02-09 | 2008-08-13 | 本田技研工业株式会社 | Aerating device for internal combustion engine |
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| JP6394215B2 (en) | 2018-09-26 |
| JP2016056783A (en) | 2016-04-21 |
| DE102015217372A1 (en) | 2016-03-17 |
| CN105422214A (en) | 2016-03-23 |
| DE102015217372B4 (en) | 2020-02-20 |
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