CN105507984B - The gas blowby air interchanger of internal combustion engine - Google Patents
The gas blowby air interchanger of internal combustion engine Download PDFInfo
- Publication number
- CN105507984B CN105507984B CN201510651136.3A CN201510651136A CN105507984B CN 105507984 B CN105507984 B CN 105507984B CN 201510651136 A CN201510651136 A CN 201510651136A CN 105507984 B CN105507984 B CN 105507984B
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- Prior art keywords
- internal combustion
- combustion engine
- air
- gas blowby
- valve
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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
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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
- F01M2013/0038—Layout of crankcase breathing systems
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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 present invention provides a kind of gas blowby air interchanger of internal combustion engine, it can be ensured that the degree of freedom of the component layouts of internal combustion engine, and suitably take a breath to the gas blowby generated in internal combustion engine.The gas blowby air interchanger of the internal combustion engine is configured to, and has：New gas supplying tubing (323) provides the clean air from air purifier (33) by the opening portion (318a) for being formed in valve mechanism cover (304)；Gas blowby discharge piping (322), from the interior discharge gas blowby of crankcase (301)；And Pcv valve gate cell (324), there is check valve and be connected to new gas supplying tubing, which only allows air to circulate from air purifier to cylinder-head-side, and above-mentioned opening portion is blocked by a part for Pcv valve gate cell.
Description
Technical field
The present invention relates to the gas blowby air interchangers of internal combustion engine.
Background technology
In the past, it is proposed that a kind of gas blowby air interchanger (referring for example to patent document 1), it will be to feeding internal combustion engine
The gas blowby delivery line that the gas blowby of clean air in body guides is connected to air purifier, on the other hand, will be to coming
Body of the internal-combustion engine is connected to, and will cleaning from the downstream of new gas ingress pipe that the clean air of air purifier guides
Air be sent into crankshaft room from the cylinder head side of internal combustion engine.
In the gas blowby air interchanger, by the clean air from air purifier with the state after being heated by cylinder head
It is sent into crankshaft room.Thereby, it is possible to prevent in crankshaft room contained humidity in gas blowby, gasolene ingredient it is condensing, can inhibit because solidifying
The deterioration for being mixed into caused oil of contracting object.In addition, in the gas blowby air interchanger, new gas ingress pipe is via allowing to internal combustion engine master
The check valve of the circulation of body and be connected to air purifier.Thereby, it is possible to efficient be sent according to the negative pressure generated in crankshaft room
Enter the air after being heated by cylinder head.
Existing technical literature
Patent document
Patent document 1：Japanese Unexamined Patent Publication 2007-146772 bulletins
However, in the gas blowby air interchanger described in patent document 1, the framework of check valve and air purifier and gas are accommodated
Cylinder cap is provided separately, and the two is connected by duct member.Therefore, it in the section from air purifier to cylinder, in other words, is being configured
There is the framework of the position configuration receiving check valve of air intake duct, throttle body etc..Accordingly, there exist the systems of the component layouts of internal combustion engine
About the problem of.In addition, under cold environment, by new gas steam-laden dew condensation water to freeze to cause check valve to be difficult to suitable
Profit action, can generate the situation that can not obtain original function.
Invention content
The present invention has been made in view of the above problems, its purpose is to provide a kind of gas blowby air interchanger of internal combustion engine,
It can be ensured that the degree of freedom of the component layouts of internal combustion engine, and can suitably take a breath to gas blowby caused by internal combustion engine.
The gas blowby air interchanger of the internal combustion engine of the present invention has：New gas supplying tubing, by being formed in cylinder head or cylinder
The opening portion of housing provides the clean air from air purifier, and combustion chamber is formed between the cylinder head and cylinder block,
And the cylinder head has the exhaust outlet being connected with combustion chamber, and which is incorporated into cylinder head；Gas blowby discharges piping, from song
Discharge gas blowby in axle box；And unidirectional valve cell, there is check valve and be connected to the new gas supplying tubing, which only allows
Air circulates from the air purifier to the cylinder head or cylinder-head-side, and the gas blowby air interchanger is characterized in that,
The unidirectional valve cell is configured to make a part for the unidirectional valve cell to block the opening portion.
According to the structure, the opening portion for being formed in cylinder head or valve mechanism cover is blocked by a part for unidirectional valve cell, because
This can prevent the space configuration check valve between air purifier and cylinder head etc., it can be ensured that the component layouts of internal combustion engine
Degree of freedom.In addition, since check valve is nearby configured in cylinder head etc., even if in cold environments, can also pass through gas
The heat that cylinder generates prevents the check valve to be difficult to free flowing exercise when freezing etc., and suitably the gas blowby generated in internal combustion engine can be carried out
Ventilation.
Particularly, in the gas blowby air interchanger of above-mentioned internal combustion engine, it is preferred that the unidirectional valve cell is fixed on and institute
It states the opposite position in opening portion and can dismount.According to the structure, since unidirectional valve cell is configured to dismount, only
By replacing unidirectional valve cell and cover, it will be able to make between the vehicle carried the vehicle of gas blowby air exchange system and do not carried
Cylinder head or valve mechanism cover keep compatibility.Thereby, it is possible to reduce the cost needed for the manufacture of cylinder head or valve mechanism cover.
In the gas blowby air interchanger of above-mentioned internal combustion engine, the opening portion preferred disposition is attached in the structure member of valve mechanism
Closely.According to the structure, since opening portion being configured near the structure member of valve mechanism, can make to come from air purifier
New gas directly contact structures component, can be cooled effectively the structure member of valve mechanism.
In addition, in the gas blowby air interchanger of above-mentioned internal combustion engine, it is preferred that during side view, the opening portion be configured to
The upper side of the air entry of the cylinder head is adjacent.According to the structure, since opening portion is configured to the air entry phase with cylinder head
Neighbour, therefore new gas can be configured in a manner of from air suction way of the air purifier along the combustion air for being connected to air entry
Supplying tubing.Thereby, it is possible to reduce the space being configured needed for new gas supplying tubing, the component layouts of internal combustion engine oneself can be improved
By spending.
Further, in the gas blowby air interchanger of above-mentioned internal combustion engine, it is preferred that during vertical view, the opening portion is configured at
The position overlapped with the extended line of the axis of cylinder.According to the structure, due in the position that the extended line of the axis with cylinder overlaps
Configuration opening portion is put, therefore can be with the side from air purifier along the air suction way for the combustion air for being connected to air entry
New gas supplying tubing is configured in formula.Thereby, it is possible to reduce the space being configured needed for new gas supplying tubing, the portion of internal combustion engine can be improved
The degree of freedom of part layout.
Invention effect
The gas blowby air interchanger of internal combustion engine according to the present invention, it can be ensured that the degree of freedom of the component layouts of internal combustion engine is simultaneously right
It is suitably taken a breath in the gas blowby that internal combustion engine generates.
Description of the drawings
Fig. 1 is the side view of the motorcycle of the gas blowby air interchanger for the internal combustion engine for being applicable in present embodiment.
Fig. 2 is the enlarged drawing on the engine periphery of above-mentioned motorcycle.
Fig. 3 is the engine of above-mentioned motorcycle and the sectional view of air purifier.
Fig. 4 is the sectional view of single dotted broken line A-A shown in Fig. 2.
Fig. 5 is the engine of above-mentioned motorcycle and the vertical view of air purifier.
Fig. 6 is the definition graph of Pcv valve gate cell that above-mentioned motorcycle has.
Fig. 7 is the definition graph for the valve mechanism cover for being equipped with above-mentioned Pcv valve gate cell.
Symbol description
1 motorcycle
3 engines
301 crankcases
302 cylinder blocks
303 cylinder head
304 valve mechanism cover
310 air entries
311 inlet valves
313 cavaeras
314 valve mechanisms
318,318a, 318b opening portion
320 air inlet pipe (air intake duct)
322 gas blowbies reflux piping (reflux piping)
323 new gas supplying tubings
324 Pcv valve gate cells
325 valve covers
326 valve mechanism cover fix face
327 valve covers fix face
328 spring valve supporters
328a through holes
328b spring valves
328c retainers
329 wall parts
329a through holes
33 air purifiers
Specific embodiment
Hereinafter, present embodiment is described in detail with reference to attached drawing.In the following, to by the present invention internal combustion
The example that the gas blowby air interchanger of machine is suitable for streetcar type motorcycle illustrates, but applicable object is not limited to this, can change.
For example, it is also possible to the gas blowby air interchanger of the internal combustion engine of the present invention is suitable for other kinds of motorcycle.In addition, it can also fit
For the vehicle (such as automatic tricycle) other than the motorcycle with internal combustion engine.
Fig. 1 is the side view of the motorcycle of the gas blowby air interchanger for the internal combustion engine for being applicable in present embodiment.In addition, following
In figure, for convenience of description, the vehicle front of motorcycle is set respectively and as arrow FR, vehicle body rear is arrow RE, is on the left of vehicle body
L, it is indicated on the right side of vehicle body for R.
As shown in Figure 1, motorcycle 1, which has, carries the steel in each portion or the vehicles made of aluminum alloy such as power unit, Denso system
Body frame 2.The main frame 21 of body shell 2 is from the head tube 22 positioned at front end towards rear branch, and oliquely downward prolonging to the left and right
It stretches.At the rear of the rear end of main frame 21, swing arm bracket 23 extends downward.In addition, the down tube 24 of body shell 2 is from the beginning
Pipe 22 towards extending approximately below.In the lower section of the lower end of down tube 24, the bottom tube 25 of right branch is approximate horizontal towards rear to the left
Ground extends and is linked to the lower end of swing arm bracket 23.
There is engine 3 in the space carrying that body shell 2 is surrounded.The combustion of storage fuel is configured in the top of engine 3
Batch can 32 is configured with seat 4 at the rear of fuel tank 32.Pass through the seat guide rail extended rearwardly and upwardly from the rear portion of main frame 21
26 support seat 4.The pair of Auxiliary support seat guide rail 26 is connected between the rear end of seat guide rail 26 and swing arm bracket 23
Frame 27.
The space surrounded by seat guide rail 26 and sub-frame 27 is covered by the side cover 11 of pair of right and left.In side cover 11
Inside space configuration filtered atmospheric in air air purifier 33.The side cover 11 of pair of right and left is solid together with seat 4
Due to seat guide rail 26.Seat 4 is tandem seat, and the toe board 12 that driver is equipped in the lower section of seat 4 multiplies people with same
The toe board 13 of member.
The front of toe board 12 on the left of vehicle body is equipped with change pedal 14, and the front of the toe board 12 on the right side of vehicle body is set
Postpone the brake pedal (not shown) of wheel 6.
On the upside of the forepart of body shell 2, front fork 51 can be supported as energy by being set to the steering shaft of head tube 22
It is enough to turn to.The suspension of front-wheel buffering is housed in front fork 51.Turning-bar 52 is set in the upper end of steering shaft, in turning-bar 52
Both ends mounting knob 53.Front-wheel 5 can be rotationally supported at the lower part of front fork 51.Brake disc 54 is equipped in front-wheel 5, front-wheel 5
The front apron 55 that top is arranged at front fork 51 covers.
Swing arm 61 can swingingly be linked to the swing arm bracket 23 of body shell 2 in the up-down direction, body shell 2 with
The suspension 62 of trailing wheel buffering is installed between swing arm 61.Trailing wheel 6 can be rotatably supported at the rear portion of swing arm 61.In addition, putting
Arm 61 is equipped with rear sprocket wheel and accommodates the chain guard 63 of chain.By the rear sprocket wheel and chain, the power of engine 3 is transmitted to trailing wheel
6.Brake disc (not shown) is set in trailing wheel 6, the top of trailing wheel 6 is covered by frame cover 64 and rear baffle 65.In frame cover 64
Top, goods carriage 7 after being equipped in a manner of being stretched out at the rear of seat 4.
Engine 3 is made of 4 cycle single-cylinder engines of horizontal crank type with speed changer.It is such as rear detailed in engine 3
It states, air is obtained by air inlet pipe (air intake duct) 320, air with fuel is mixed by throttle body 321 and supplied to burning
Room 308 (with reference to Fig. 3).Exhaust gas after burning (is not schemed via the exhaust pipe rearward extended in the right side of engine 3
Show) it is discharged from muffler 34.In addition, engine 3 forms the internal combustion engine for being applicable in the gas blowby air interchanger of the present invention.
Hereinafter, with reference to Fig. 2~Fig. 5, the structure on 3 periphery of engine of the motorcycle 1 of present embodiment is illustrated.Figure
2 be the enlarged drawing on 3 periphery of engine of the motorcycle 1 of present embodiment.Fig. 3 is the engine 3 of the motorcycle 1 of present embodiment
And the sectional view of air purifier 33.Fig. 4 is the sectional view of single dotted broken line A-A shown in Fig. 2.Fig. 5 is rubbing for present embodiment
The engine 3 of motorcycle 1 and the vertical view of air purifier 33.In addition, in Fig. 4, omit the crankcase 301 for forming engine 3
Lower end a part, and omit the structure member in engine 3.In addition, it in Figure 5, for convenience of description, omits aftermentioned
Throttle body 321.
As shown in Fig. 2, engine 3 end and front end will hang on composition body shell 2 thereon by bracket B1, B2
Main frame 21 and down tube 24.In addition, swing arm bracket 23 is fixed in the rear end of engine 3.In air purifier 33, in master
Upper end and front end are respectively fixed on frame 21 and seat guide rail 26.
Engine 3 have crankcase 301, the top for being incorporated into crankcase 301 cylinder block 302, be incorporated into cylinder block 302
Top cylinder head 303 and be incorporated into cylinder head 303 top valve mechanism cover 304.In the inside of engine 3, slide certainly
The piston 305 for the cylinder-bore 302a such as being configured in cylinder block 302 is connected to via connecting rod 307 to be freely and rotatably supported in song
The bent axle 306 of axle box 301 (with reference to Fig. 3).
Matched in a manner of opposite with the top of piston 305 as shown in figure 3, being equipped between cylinder block 302 and cylinder head 303
The combustion chamber 308 put.In cylinder head 303, the front side in combustion chamber 308 sets exhaust outlet 309, on the other hand, is burning
The rear side setting air entry 310 of room 308.In addition, it can openedly and closedly be configured with inlet valve 311 and air bleeding valve in cylinder head 303
312, which controls inflow of the gaseous mixture from air entry 310 to combustion chamber 308, the air bleeding valve 312 control exhaust gas
Outflow from from combustion chamber 308 to exhaust outlet 309.
Cavaera 313 is equipped between cylinder head 303 and valve mechanism cover 304.Control inlet valve is accommodated in the cavaera 313
311 and the valve mechanism 314 of air bleeding valve 312.Valve mechanism 314 has：Inlet valve 311 and air bleeding valve 312 utilize convex jointly
Wheel shaft 315；The suction side rocking arm 316 of the opening and closing of inlet valve 311；The exhaust side rocking arm 317 of the opening and closing of air bleeding valve 312；With
And the restoring mechanism 330 of inlet valve 311 and air bleeding valve 312.
Suction side rocking arm 316 is located at the suction side cam 315a of camshaft 315 by being driven in swing come driven for opening and closing
Inlet valve 311.Exhaust side rocking arm 317 is located at the exhaust side cams 315b of camshaft 315 by being driven in and is driven to swing to be opened and closed
Dynamic air bleeding valve 312.Restoring mechanism 330 has the valve spring seat 331 for the valve rod for being fixed on inlet valve 311 and air bleeding valve 312
With the valve spring 332 being configured at around valve rod.Valve spring 332 is configured at lower surface and the gas of valve spring seat 331
Between the upper surface of cylinder cap 303, make air-breathing in the pressing force for relieving suction side rocking arm 316 (exhaust side rocking arm 317) generation
Valve 311 (air bleeding valve 312) recovers to initial position.
Be formed in valve mechanism cover 304 for carry out valve mechanism 314 structure member (such as inlet valve 311 and exhaust
Valve 312) position adjustment etc. a pair of openings portion 318 (318a, 318b).318a, 318b are respectively formed in gas for these opening portions
The front wall portion and rear wall parts of cylinder head cover 304.It is configured to 311 corresponding opening portion 318a of inlet valve by aftermentioned Pcv valve
A part for gate cell 324 blocks.On the other hand, it is configured to 312 corresponding opening portion 318b of air bleeding valve by cover
319 block.These Pcv valve gate cells 324 and cover 319 are configured in the position of the structure member of valve mechanism 314
It is dismounted when adjusting operation.
Transmission mechanism (not shown) is equipped between the camshaft 315 of valve mechanism 314 and bent axle 306 forming.The transmission
Mechanism has the cam chain between the one end for being connected to camshaft 315 and one end of bent axle 306, is configured to bent axle
306 rotary power deceleration is 1/2 and passes to camshaft 315.As shown in figure 4, the cam chain of the transmission mechanism is to pass through
The mode for being formed in upper and lower directions the access 302b of cylinder block 302 is configured.Access 302b be formed as connect cavaera 313 with
Crankshaft room 301a in crankcase 301.Cam chain hangs around the camshaft 315 in cavaera 313 and the song in crankcase 301
The bent axle 306 of axis room 301a.
As shown in figure 3, the rear side in the air entry 310 of cylinder head 303 is connected with throttle body via air inlet pipe 320
321.The throttle body 321 is configured at the front side of air purifier 33, via connecting tube 33a connections air purifier 33.
Throttle body 321 has throttle valve (not shown) in inside.The throttle body 321 is according to the throttle valve carried out by driver
Opening and closing operations adjust the open and-shut mode of throttle valve, so as to controlling the sucking supplied from 33 lateral combustion chamber 308 of air purifier
Air capacity.
The gas blowby reflux piping for the gas blowby in crankcase 301 to be made to flow back into combustion chamber 308 is connected in air inlet pipe 320
(hereinafter referred to as " reflux piping ") 322.The reflux piping 322 and the top of speed changer room 301b being formed in crankcase 301
Exhaust outlet 301c connections, on the other hand, connect with being formed in the supply mouth 320a of top of air inlet pipe 320.That is, reflux piping
322 export, and be connected to the top of air inlet pipe 320 upward from the speed changer room 301b of crankcase 301.In addition, reflux is matched
Pipe 322 forms the gas blowby discharge piping in claims.
It is equipped in air purifier 33 and matches for the new gas supply for supplying internal clean new gas to 303 side of cylinder head
Pipe 323.Before the new gas supplying tubing 323 is connected near the lower end of air purifier 33, on the other hand, with being installed on
PCV (the Positive Crankcase Ventilation of the opening portion 318a of valve mechanism cover 304：Positive crankcase ventilation (PCV)) valve
The valve cover 325 of gate cell 324 connects.That is, new gas supplying tubing 323 near the lower end of air purifier 33 upward
Export, and it is connected to the opening portion 318a of valve mechanism cover 304.
Here, during side view, opening portion 318a and cylinder that new gas supplying tubing 323 is connected via Pcv valve gate cell 324
The upper side of the air entry 310 of lid 303 is adjacent and is configured.In addition, when overlooking, opening portion 318a is configured at and cylinder-bore 302a
Central axis B the position (with reference to Fig. 5) that overlaps of extended line.Opening portion 318a is configured in this way, it can be with net from air
Change device 33 and new gas supplying tubing 323 is configured along the mode of the air suction way for the combustion air for being connected to air entry 310.By
This, can reduce the space being configured needed for new gas supplying tubing 323, can improve the degree of freedom of the component layouts of engine 3.
Here, the structure for being installed on the Pcv valve gate cell 324 of the opening portion 318a of valve mechanism cover 304 is carried out with reference to Fig. 6
Explanation.Fig. 6 is the definition graph of Pcv valve gate cell 324 that the motorcycle 1 of present embodiment has.In Fig. 6 A and Fig. 6 B, point
Not Biao Shi Pcv valve gate cell 324 top view and bottom view, in figure 6 c, represent the sectional view of single dotted broken line C-C in Fig. 6 A.
In addition, in figure 6, omit valve cover 325 possessed by Pcv valve gate cell 324 (with reference to Fig. 3).
As shown in fig. 6, Pcv valve gate cell 324 has：The valve mechanism cover for being installed on valve mechanism cover 304 fixes face 326；
The valve cover for being equipped with valve cover 325 fixes face 327；And it is installed on the spring valve supporter that valve cover fixes face 327
328.In addition, Pcv valve gate cell 324 forms the unidirectional valve cell in claims.
When looking down, valve mechanism cover, which fixes face 326, substantially has rectangle, attached in cornerwise corner positioned at a side
Closely it is equipped with flange part 326a, 326b.The installation of the fixing screws to valve mechanism cover 304 is formed in these flange parts 326a, 326b
Hole 326c.In addition, fix the recess portion 326d with ellipse when face 326 is formed with vertical view in valve mechanism cover.
When looking down, valve cover, which fixes face 327, substantially has rectangle, and flange part is equipped at the both ends of length direction
327a、327b.The mounting hole 327c to the fixing screws of valve cover 325 is formed in these flange parts 327a, 327b.In addition, valve
Door cover fixed face 327 has rectangular recess portion 327d when being formed with vertical view.Receipts are formed with above these recess portions 327d
Hold the receiving portion 327e of spring valve supporter 328 (with reference to Fig. 6 C).
When looking down, spring valve supporter 328 substantially has rectangular writing board shape, and is contained in receiving portion 327e
(with reference to Fig. 6 C).The through hole of substantially rectangular shape when looking down is formed in the substantially central portion of spring valve supporter 328
328a.In the lower surface of spring valve supporter 328, the fixed spring valve 328b in a manner of opposite with through hole 328a, and at this
The lower side of spring valve 328b is fixed with retainer 328c.In addition, spring valve 328b forms the check valve in right.
When looking down, spring valve 328b and retainer 328c substantially has rectangle, by screw 328d by length direction
The lower surface of one end (left part shown in Fig. 6 C) fixed to spring valve supporter 328.For example, spring valve 328b is by having
Resin material, the metal material of elasticity are formed, and have thin sheet form.Spring valve 328b is functioned as follows：Allow from air
The new gas of 33 side of clarifier leads to 313 effluent of cavaera, and on the other hand, the air of 313 side of limitation cavaera is matched to the supply of new gas
It flows backwards 323 side of pipe.Spring valve 328b is for example configured to the negative pressure control for becoming larger according to the negative pressure in cavaera 313 and aperture being made to become smaller
The aperture control valve of standard.By spring valve 328b, control and be sent into combustion chamber 308 via air inlet pipe 320 and burnt again
When the air capacity that is flowed back.
Retainer 328c is for example made of flexible metal material, and a part for free end side has slight curvature
Thin sheet form.Retainer 328c is functioned as follows：Bullet is limited when new gas is logical to 313 effluent of cavaera via spring valve 328b
Spring valve 328b is deformed above in certain position.In addition, retainer 328c is functioned as follows；Stopping via spring valve 328b's
Spring valve 328b is made to recover to initial position in the case of the circulation of new gas.
It is equipped between valve mechanism cover fixes the recess portion 326d of face 326 and valve cover fixes the recess portion 327d of face 327
Wall part 329.By the upper surface of the wall part 329 come the lower surface of regulation recess portion 326d, another aspect passes through wall part
The upper surface of regulation recess portion 327d is come in 329 lower surface.Next door portion 329 is partially formed with connection recess portion 326d and recess portion
The through hole 329a of 327d.It is admitted to via spring valve 328b to the new gas that 313 effluent of cavaera leads to via through hole 329a
Cavaera 313 in valve mechanism cover 304.
The Pcv valve gate cell 324 having a structure in which is matched in a manner of the opening portion 318a for blocking valve mechanism cover 304
It puts.Here, the installation section of the valve mechanism cover 304 to being equipped with Pcv valve gate cell 324 illustrates.Fig. 7 is to be equipped with PCV
The definition graph of the valve mechanism cover 304 of valve unit 324.
As shown in fig. 7, the periphery setting of the opening portion 318a in valve mechanism cover 304 has stationary plane 304a, this is fixed
Face 304a has shape same shape when face 326 is fixed with overlook observation valve mechanism cover.It is formed on stationary plane 304a
A pair of fixing screws inserted with fixed Pcv valve gate cell 324 (more specifically valve mechanism cover fixes face 326) is fixed
Hole 304b.Pcv valve gate cell 324 is in the mounting hole for the mounting hole 326c and stationary plane 304a for making valve mechanism cover fixation face 326
It is fixed in the state of 304b alignment by fixing screws.The recess portion 326d and cylinder of face 326 are fixed in valve mechanism cover as a result,
Pcv valve gate cell 324 is fixed in a state that the opening portion 318a of housing 304 is consistent.
As shown in fig. 7, when from the installation direction of Pcv valve gate cell 324, opening portion 318a is configured at cavaera 313
Near interior valve mechanism 314.More specifically, a part for suction side rocking arm 316 is configured in the inside of opening portion 318a,
And it is configured with a part (valve spring seat 331, valve spring 332) for the restoring mechanism 330 of inlet valve 311.In this way
Opening portion 318a is configured in ground near the structure member of valve mechanism 314, and the new gas from air purifier 33 can be made straight
Ground connection contacts these structure members, can effectively cool down the structure member of valve mechanism 314.
The gas blowby air interchanger of the internal combustion engine of present embodiment is configured to comprising reflux piping 322, new gas supplying tubing 323
And Pcv valve gate cell 324.The gas blowby air interchanger of the internal combustion engine of present embodiment is net by air via new gas supplying tubing 323
Change the clean new pneumatic transmission in device 33 and enter cylinder head 303, and (ginseng is sent into crankcase 301 via the access 302b of cylinder block 302
According to Fig. 4).Also, the gas blowby lodged in crankcase 301 is sent into air inlet pipe 320 via reflux piping 322, and with from sky
The new gas of gas purifier 33 is supplied via air entry 310 to combustion chamber 308 together.Thereby, it is possible to effectively to lodging in bent axle
Gas blowby in case 301 is taken a breath.
Here, with reference to the ventilation of Fig. 3, Fig. 4 and Fig. 6 to the gas blowby in the gas blowby air interchanger of the internal combustion engine of present embodiment
Path illustrates.As shown in figure 3, a part for the combustion products generated in combustion chamber 308 as gas blowby from piston 305 and
Crankshaft room 301a is escaped between cylinder-bore 302a.So, in order to the gas blowby for lodging in crankshaft room 301a is made to flow back into combustion
Room 308 is burnt, the new gas supplying tubing 323 for supplying the new gas from air filter 33 is connected to valve mechanism cover 304.
According to the negative pressure state in cavaera 313 from new gas supplying tubing 323 supply new gas from cavaera 313 via
The access 302b of cylinder head 302 is admitted to the crankshaft room 301a of crankcase 301.The inflow of new gas in this way, lodges in song
Gas blowby in the 301a of axis room is admitted to air inlet pipe 320 via reflux piping 322.The new gas of air inlet pipe 320 is sent into coming from throttling
The gaseous mixture of 321 side of valve body is supplied via air entry 310 to combustion chamber 308 together.
In the gas blowby air interchanger of the internal combustion engine of such present embodiment, blocked up by a part for Pcv valve gate cell 324
Plug is formed in the opening portion 318a of valve mechanism cover 304.Thereby, it is possible to prevent between air purifier 33 and valve mechanism cover 304
Space configuration spring valve 328b, it can be ensured that the degree of freedom of the component layouts of engine 3.
In addition, in the gas blowby air interchanger of the internal combustion engine of present embodiment, due to being configured near valve mechanism cover 304
Spring valve 328b, therefore even if in cold environments, the heat generated by cylinder (cylinder-bore 302b) can prevent spring valve
328b is difficult to free flowing exercise because freezing etc., can suitably take a breath to the gas blowby generated in engine 3.
Further, in the gas blowby air interchanger of the internal combustion engine of present embodiment, make Pcv valve gate cell 324 be fixed on
It is formed in the opposite positions of opening portion 318a of valve mechanism cover 304 and can dismount.Pcv valve gate cell 324 is formed in this wise, by
This, only by replacing Pcv valve gate cell 324 and cover, it will be able to carry the vehicle of gas blowby air exchange system and not carry
Valve mechanism cover 304 is made to keep compatibility between vehicle.Thereby, it is possible to reduce the cost needed for the manufacture of valve mechanism cover 304.
In addition, the present invention is not limited to the above embodiment, various changes can be implemented.In the above embodiment
In, size illustrated in the drawings, shape etc. are not limited to this, can be suitably changed in the range of the effect for playing the present invention.
In addition to this, it can suitably change to implement in the range of the purpose of the present invention is not departed from.
For example, in the above-described embodiment, the opening portion of valve mechanism cover 304 is formed in blocking to Pcv valve gate cell 324
The situation that the mode of 318a is configured is illustrated.However, the position of the opening portion 318a for being configured with Pcv valve gate cell 324
It puts, is not limited to valve mechanism cover 304, can suitably change.For example, can be configured premised on cavaera 313 is sent into new gas
The position for having the opening portion 318a of Pcv valve gate cell 324 can also be formed in the part of cylinder head 303.Even if changing in this way
In the case of the configuration of opening portion 318a, the effect identical with the above embodiment can be also obtained.
Industrial availability
As described above, the present invention has the degree of freedom for the component layouts that can be ensured that internal combustion engine and suitably internal combustion engine is generated
The effect taken a breath of gas blowby, particularly have to having the vehicles such as the motorcycle of internal combustion engine that can accumulate gas blowby in crankcase
With.
Claims (9)
1. a kind of gas blowby air interchanger of internal combustion engine, has：
New gas supplying tubing is provided by the opening portion for being formed in cylinder head or valve mechanism cover from the clean of air purifier
Air forms combustion chamber, and the cylinder head has the exhaust outlet being connected with combustion chamber between the cylinder head and cylinder block, should
Valve mechanism cover is incorporated into cylinder head；Gas blowby discharges piping, and gas blowby is discharged out of crankcase；And unidirectional valve cell, there is check valve
And the new gas supplying tubing is connected to, which only allows air from the air purifier to the cylinder head or cylinder
Housing effluent leads to,
The gas blowby air interchanger is characterized in that the unidirectional valve cell is configured to block up a part for the unidirectional valve cell
Fill in the opening portion.
2. the gas blowby air interchanger of internal combustion engine according to claim 1, which is characterized in that
The unidirectional valve cell is fixed on the position opposite with the opening portion and can dismount.
3. according to the gas blowby air interchanger of the internal combustion engine described in claims 1 or 2, which is characterized in that
The opening portion is configured near the structure member of valve mechanism.
4. according to the gas blowby air interchanger of the internal combustion engine described in claims 1 or 2, which is characterized in that
During side view, the opening portion is configured to adjacent with the upper side of the air entry of the cylinder head.
5. the gas blowby air interchanger of internal combustion engine according to claim 3, which is characterized in that
During side view, the opening portion is configured to adjacent with the upper side of the air entry of the cylinder head.
6. according to the gas blowby air interchanger of the internal combustion engine described in claims 1 or 2, which is characterized in that
During vertical view, the opening portion is configured at the position overlapped with the extended line of the axis of cylinder.
7. the gas blowby air interchanger of internal combustion engine according to claim 3, which is characterized in that
During vertical view, the opening portion is configured at the position overlapped with the extended line of the axis of cylinder.
8. the gas blowby air interchanger of internal combustion engine according to claim 4, which is characterized in that
During vertical view, the opening portion is configured at the position overlapped with the extended line of the axis of cylinder.
9. the gas blowby air interchanger of internal combustion engine according to claim 5, which is characterized in that
During vertical view, the opening portion is configured at the position overlapped with the extended line of the axis of cylinder.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014208752A JP2016079817A (en) | 2014-10-10 | 2014-10-10 | Blow-by gas ventilation device of internal combustion engine |
| JP2014-208752 | 2014-10-10 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105507984A CN105507984A (en) | 2016-04-20 |
| CN105507984B true CN105507984B (en) | 2018-07-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510651136.3A Active CN105507984B (en) | 2014-10-10 | 2015-10-10 | The gas blowby air interchanger of internal combustion engine |
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| Country | Link |
|---|---|
| JP (1) | JP2016079817A (en) |
| CN (1) | CN105507984B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6707997B2 (en) * | 2016-06-03 | 2020-06-10 | いすゞ自動車株式会社 | Engine equipment |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1603585A (en) * | 2003-10-03 | 2005-04-06 | 本田技研工业株式会社 | Blowby control system and method for an internal combustion engine |
| CN103629407A (en) * | 2012-08-22 | 2014-03-12 | 爱三工业株式会社 | Flow control valve |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58113516A (en) * | 1981-12-26 | 1983-07-06 | Fuji Heavy Ind Ltd | Oil returning device of horizontally opposed internal-combustion engine |
| JPS58113523A (en) * | 1981-12-28 | 1983-07-06 | Fuji Heavy Ind Ltd | Oil returning device of internal-combustion engine |
| JP4244559B2 (en) * | 2002-04-01 | 2009-03-25 | スズキ株式会社 | Vehicle engine |
| JP4502737B2 (en) * | 2003-08-29 | 2010-07-14 | 本田技研工業株式会社 | Blow-by gas ventilation system for internal combustion engines |
| JP4573759B2 (en) * | 2005-11-29 | 2010-11-04 | 本田技研工業株式会社 | Blow-by gas ventilation system for internal combustion engines |
| JP5671818B2 (en) * | 2010-03-10 | 2015-02-18 | スズキ株式会社 | Engine breather room layout structure |
| JP5533153B2 (en) * | 2010-04-02 | 2014-06-25 | トヨタ自動車株式会社 | Control device for internal combustion engine |
-
2014
- 2014-10-10 JP JP2014208752A patent/JP2016079817A/en active Pending
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2015
- 2015-10-10 CN CN201510651136.3A patent/CN105507984B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1603585A (en) * | 2003-10-03 | 2005-04-06 | 本田技研工业株式会社 | Blowby control system and method for an internal combustion engine |
| CN103629407A (en) * | 2012-08-22 | 2014-03-12 | 爱三工业株式会社 | Flow control valve |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2016079817A (en) | 2016-05-16 |
| CN105507984A (en) | 2016-04-20 |
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