CN105972221B - Pcv valve and PCV access with the Pcv valve - Google Patents
Pcv valve and PCV access with the Pcv valve Download PDFInfo
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- CN105972221B CN105972221B CN201610116101.4A CN201610116101A CN105972221B CN 105972221 B CN105972221 B CN 105972221B CN 201610116101 A CN201610116101 A CN 201610116101A CN 105972221 B CN105972221 B CN 105972221B
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- pcv
- valve
- valve body
- side interface
- downstream
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
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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
- F01M13/0011—Breather valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
- Check Valves (AREA)
Abstract
The present application provides a kind of Pcv valve and PCV access that can be prevented the positive pressure for acting on downstream-side chamber intrusion upstream side cavity when turbocharging and oil can be made to be back to upstream side cavity when non-turbine is pressurized.Pcv valve (100) is set to the PCV access (200) of engine, and there is a side interface (170) being opened in upstream side cavity (210), the secondary side interface (180) being opened in downstream-side chamber (220), it is connected to the flow path (190) of a side interface (170) Yu the secondary side interface (18), the valve body (140) moved in the flow path (190), and the valve seat (119) for supplying the valve body (140) to take a seat, the Pcv valve (100) is characterized in that: the valve body (140) and the valve seat (119) are constituted in a manner of it will can hermetic block between a side interface (17) and secondary side interface (180), and have to the valve body (140) to making itself and the valve seat (11 9) mutually from pressuring direction applicator member (120).
Description
Technical field
The present application is related to the Pcv valve on a kind of PCV access set on engine and the PCV access with the Pcv valve.
Background technique
Since previously, unburned gaseous mixture can leak to crankcase etc. from the piston of engine and the gap of cylinder, and
The so-called gas blowby containing oil is generated in the crankcase.Moreover, the gas blowby will lead to oil deterioration etc., so being restored by PCV access
To air inlet side (suction system).
As such PCV access, it is known that the technology recorded in such as patent document 1.The PCV of patent document 1 shown in Fig. 7
Access 400 is provided at a part of engine, and by upstream side cavity 410, the downstream-side chamber 420 that is connected to air inlet side, connection
The access 430 of upstream side cavity 410 and downstream-side chamber 420 and the Pcv valve 300 being installed in the access 430 are constituted.
Gas blowby flows into a side interface 370 of Pcv valve 300 from the upstream side cavity 410 for being connected to crankcase etc., and logical
It crosses flow path 390 and flows to downstream-side chamber 420 from secondary side interface 380.Moreover, gas blowby, which is supplied to, is connected to downstream-side chamber
420 air inlet pipe (intake pipe).At this moment, firstly, gas blowby cools down in upstream side cavity 410 and isolate oil, divide
The oil separated out countercurrently and is back to the food tray for being connected to upstream side cavity 410 in upstream side cavity 410.Then, gas blowby
Oil is cooled down and isolated in downstream-side chamber 420, and separated oil out is via 300 adverse current of Pcv valve and is back to connection
In the food tray of upstream side cavity 410.
Moreover, in order to make the oil isolated in downstream-side chamber 420 swimmingly adverse current, what is taken a seat for valve body 340
Clearance C is arranged in valve seat 319.So that oil by clearance C from a side interface 370 swimmingly adverse current to upstream side cavity 410.
However, in the engine of attached turbocharger, when carrying out turbocharging, by the air to pressurize from air inlet side to
The cylinder of engine is discharged.Then, the pressure rise (that is, becoming positive pressure) being connected in the downstream-side chamber 420 of air inlet side, PCV
340 Xiang Yici side interface of valve body, 370 side of valve 300 is mobile and is seated at valve seat 319.
However, because the valve seat 319 in Pcv valve 300 is equipped with clearance C, therefore, the positive pressure can be generated via clearance C and from one
The problem of secondary intrusion of side interface 370 to 410 side of upstream side cavity.Therefore, in order to prevent turbocharging when positive pressure flow into upstream side
410 side of chamber, it is contemplated that be set as removal clearance C and can hermetic block the construction of valve body 340 Yu valve seat 319.However, when non-
When turbocharging (for example, when the pressure of 420 side of downstream-side chamber is zero or is lower negative pressure), valve body 340 is not downstream
420 side of side cavity is mobile and remains off, and therefore, oil can not swimmingly be back to 410 side of upstream side cavity.
[prior art document]
[patent document]
[patent document 1] special open 2010-164027
Summary of the invention
[problem to be solved by the invention]
Therefore, in view of described problem, being designed to provide for the present application a kind of can prevent from acting on when turbocharging
Upstream side cavity is invaded in the positive pressure of downstream-side chamber and oil can be made to be back to upstream side cavity when non-turbine is pressurized
Pcv valve and PCV access.
[technical means to solve problem]
The Pcv valve of the present application is set on the PCV access of engine, and has the primary side being opened in the side cavity of upstream
Interface, the secondary side interface being opened in downstream-side chamber, the connection side interface and the secondary side interface flow path,
The valve body moved in the flow path and the valve seat taken a seat for the valve body, the Pcv valve are characterized in that: the valve body and the valve
Seat be constituted in a manner of it will can hermetic be blocked between a side interface and the secondary side interface, and have for
The valve body to make its with the valve seat mutually from pressuring direction applicator member.
According to the feature, in the state of non-turbine pressurization, valve body is set to become open state using the force of applicator member,
And make a side interface and secondary side orifice, the oil for being stranded in downstream-side chamber can be made to be back to upstream side chamber as a result,
Room side.On the other hand, in the state of turbocharging, valve body Xiang Yici side interface is squeezed using positive pressure, makes applicator member pressure
Contracting.Then, valve body is seated at valve seat as closed state, and by air-tightness ground resistance between a side interface and secondary side interface
It is disconnected, it can prevent the positive pressure in downstream-side chamber from invading upstream side chamber side as a result,.
In turn, the Pcv valve of the present application is characterized in that: have keep the applicator member and with the applicator member one
The holding member moved with the axis along the Pcv valve.
According to the feature, holding member is moved along the axis of Pcv valve, therefore, the pressure structure kept by the holding member
Part can swimmingly stretch along the axis of Pcv valve.
In turn, the Pcv valve of the present application is characterized in that: having the fastener with a part locking of holding member.
According to the feature, when the pressure of downstream-side chamber becomes higher negative pressure, even if applicator member or holding structure
Part secondary side interface side to be sucked into, holding member and the applicator member for being held in the holding member also can engaged part preventions
Without being inhaled into.
In turn, the Pcv valve of the present application is characterized in that: the holding member has the protrusion for being connected to the valve body
Portion.
According to the feature, the protruding portion of holding member is connected to valve body, therefore, is formed between holding member and valve body
Gap.Moreover, oil can be via the gap and swimmingly countercurrently to upstream side cavity side.
In turn, the PCV access of the engine with Pcv valve of the present application is characterized in that: in connection upstream side cavity
With the Pcv valve is installed in the access of downstream-side chamber, a side interface of the Pcv valve is configured at the upstream side chamber
The secondary side interface of interior, the Pcv valve is configured in the downstream-side chamber.
The oil for being stranded in downstream-side chamber side can be made to be back in the state of non-turbine pressurization according to the feature
Upstream side chamber side on the other hand, can will be airtight between a side interface and secondary side interface in the state of turbocharging
Property block, so as to prevent positive pressure in downstream-side chamber from invading upstream side chamber side.
[The effect of invention]
As described above, it according to the Pcv valve of the present application and PCV access, can prevent from acting on down when turbocharging
The positive pressure for swimming side cavity invades upstream side cavity, oil can be made to be back to upstream side cavity when non-turbine pressurization.
Detailed description of the invention
Fig. 1 is the exploded perspective view of the Pcv valve of the present application.
Fig. 2 (a) is the front view of the main part of Pcv valve shown in FIG. 1, and Fig. 2 (b) is the side view of the main part.
Fig. 3 (a) is the front view of the holding member of Pcv valve shown in FIG. 1, and Fig. 3 (b) is the side view of the holding member,
Fig. 3 (c) is the bottom view of the holding member.
Fig. 4 (a) is the front view of the valve body of Pcv valve shown in FIG. 1, and Fig. 4 (b) is the side view of the valve body, and Fig. 4 (c) is
The bottom view of the valve body, Fig. 4 (d) are the front end sides of holding member shown in Fig. 3 configured with the front view of the state of valve body, figure
4 (e) be the front end side of holding member shown in Fig. 3 configured with the side view of the state of valve body.
Fig. 5 is the PCV access with Pcv valve of the present application when engine stops, and is vertical section of the axis across Pcv valve
Face figure.
Fig. 6 is the PCV access with Pcv valve of the present application when applying positive pressure, and is vertical section of the axis across Pcv valve
Face figure.
Fig. 7 is the PCV access with Pcv valve of patent document 1, and is the longitudinal section of the axis across Pcv valve.
Specific embodiment
Hereinafter, being illustrated referring to Fig.1 to the Pcv valve of the present application 100.In addition, detailed composition will be in hereafter chatting
State, the Pcv valve 100 of the present application and existing Pcv valve 300 the difference is that: the shape of the valve seat 119 of main part 110
Shape is different and is equipped with containment member S1 and holding member 130, and other constructions are essentially identical with existing Pcv valve 300.
Fig. 1 is the exploded perspective view of Pcv valve 100, and in Pcv valve 100, the axis P along Pcv valve 100 is sequentially assembled with main part
110, as the spring of applicator member 120, holding member 130, valve body 140, spring 150, outer side tube part 160.Specifically, will
Spring 120 is embedded in the lateral surface 112 of the front end 111 of the cylindrical shape of main part 110, engages the end 121 of spring 120
Groove 113 in front end 111.The end 121 of spring 120 is in undergauge, therefore can certainly be locked to groove 113 without understanding
It loosens outside.
Then, spring 120 is inserted into the inner peripheral surface of the annulus 131 of holding member 130, until the front end of spring 120
Until 122 are locked to protruding portion 132.In turn, valve body 140 is configured to the front end side of holding member 130, and to surround the valve body
Spring 150 is installed on axle portion 141 by the mode around 140 axle portion 141.Under the state, by main part 110, spring 120, protect
It holds in the medial compartment 165 that component 130, valve body 140 and spring 150 are contained in inside outer side tube part 160, by outer side tube part 160
After opening edge 161 is embedded in the base end part 114 of main part 110, fix its bit embedded portion in the way of welding etc., thus complete
At Pcv valve 100.
In addition, pair of right and left through hole 162 is equipped with, in the front end of outer side tube part 160 in the outer peripheral surface of outer side tube part 160
Side is equipped with the cross bore 164 that along the axis P axis hole 163 being open and vertically left and right directions is open.These through holes 162, axis hole
163 and cross bore 164 be connected to medial compartment 165.Moreover, main part 110 passes through in the state that Pcv valve 100 is completed
Through-hole 117 is overlapped with the through hole 162 of outer side tube part 160, forms a side interface 170.Moreover, before outer side tube part 160
The outer peripheral surface of end side is equipped with cricoid containment member S2, is equipped in the outer peripheral surface of the rear end side of outer side tube part 160 cricoid
Containment member S3.
Then, it is illustrated referring to detailed composition of the Fig. 2 to main part 110.
As shown in Fig. 2, main part 110 have base end part 114, from the base end part 114 forward end side extend cylindrical portion
115 and cylindric front end 111.The lateral surface 112 of the front end 111 expanding, maximum diameter from front end side to cylindrical portion 115
Rear end side be connected in groove 113.Therefore, when the end 121 of spring 120 is embedded in lateral surface 112, if along inclined
Lateral surface 112 is pushed into spring 120, then is easy to be embedded in spring 120.In turn, because end 121 is locked to groove 113, therefore, bullet
Spring 120 is not easy to fall from front end 111.
Moreover, being formed with the opening portion 118 of rounded opening when facing, and internal formation in the inside of the front end 111
There is the secondary chamber 116 extended from the opening portion 118 to 115 side of cylindrical portion.In turn, which has and inclines to a secondary chamber 116
Oblique cricoid valve seat 119, the valve seat 119 are formed as shape corresponding with the portion of taking a seat 145, with can substantially with it is aftermentioned
Valve body 140 take a seat portion 145 contiguity.
Moreover, being formed with the pair of right and left through hole 117 of perforation a to secondary chamber 116 in the side of cylindrical portion 115.Moreover,
One secondary chamber 116 becomes the space of connection so that oil or gas blowby can front end 111 opening portion 118 between through hole 117
Circulation.
In the periphery of the front end side of cylindrical portion 115, the cricoid sealing with the inner surface of outer side tube part 160 contiguity is installed
Component S1.On the other hand, it in the rear end side of cylindrical portion 115, is formed in order to which Pcv valve 100 to be fixed on to a part of engine
The fixation hole H1 of screw etc. can be screwed togather.
Then, it is illustrated referring to detailed composition of the Fig. 3 to holding member 130.
As shown in figure 3, holding member 130 has annulus 131, protrudes the prominent of the front end side for being formed in the annulus 131
Out portion 132 and be formed in annulus 131 outer peripheral surface contact surface 133.Protruding portion 132 is equally spaced formed in annulus 131
Front end side 4 at, front end becomes the hook shape that is curved to the inside.Moreover, contact surface 133 is equally spaced formed in annulus
Become at the 4 of 131 outer peripheral surface, and in a manner of the medial compartment 165 160 inside of outer side tube part can be contacted with and medial compartment
The corresponding smooth flexure plane of 165 inner surface.In this way, being contacted with medial compartment to be formed with multiple contact surfaces 133 at equal intervals
165 inner surface, therefore, holding member 130 can be moved in medial compartment 165 with stable posture.
Moreover, there are the recess portions 134 of not formed contact surface 133 in the outer peripheral surface of annulus 131.Therefore, work as holding member
130, to when the movement of the compression direction of spring 120, are stranded in the model surrounded by outer side tube part 160, holding member 130 and groove 113
The drop enclosed in Y (referring to Fig. 5) is easy to be discharged via recess portion 134, to promote the responsiveness of the movement of holding member 130.
Then, the inner peripheral surface of annulus 131 has the inclined inclined surface 135 of forward end, and protruding portion 132 is located at the inclined surface
135 front end side.Therefore, when the front end 122 of spring 120 to be embedded in annulus 131, inclined surface 135 is by 122 court of front end
Protruding portion 132 guides, and it is easily locked to the hook portion of protruding portion 132.Especially, as shown in Figure 1, holding member
130 installation is extremely simple, it is only necessary to annulus 131 be embedded in the front end 122 of spring 120, and be easy assembling.In addition, ring
The internal diameter in shape portion 131 is equal with the outer diameter of front end 122 or outer diameter greater than front end 122, with can be for the front end 122 of spring 120
Insertion.
Then, it is illustrated referring to detailed composition of the Fig. 4 to valve body 140.
As shown in Fig. 4 (a) to Fig. 4 (c), valve body 140 has head 142 and is formed in the circle of the front end side on the head 142
Columnar axle portion 141.Axle portion 141 becomes the shape that attenuates steppedly towards front end, when being inserted into aftermentioned secondary side
When the axis hole 163 of interface 180, flow path cross sectional area can change according to its intubating length, therefore, it is special can obtain defined flow
Property.Moreover, head 142 is in roughly triangular shape, corner 143 is can be contacted in the medial compartment 165 of outer side tube part 160
The mode on surface becomes smooth flexure plane corresponding with the inner surface of medial compartment 165.Moreover, be located at adjacent corner 143 it
Between straight line portion 144 and medial compartment 165 inner surface mutually from therefore, oil or gas blowby can be from the interior tables for being formed in medial compartment 165
Gap circulation between face and straight line portion 144.Moreover, the back side on head 142 is equipped with cricoid portion 145 of taking a seat, the portion of taking a seat
145 can substantially touch with valve seat 119.
However, as shown in Fig. 4 (d) and Fig. 4 (e), holding member 130 is dashed forward in the state that the assembling of Pcv valve 100 finishes
Portion 132 is connected to the back side on the head 142 of valve body 140 out.Then, the head 142 of valve body 140 becomes and holding member 130
131 phase of annulus from state, gap X is formed between head 142 and annulus 131.Moreover, holding member 130 is prominent
The position in portion 132 and quantity are designed in a manner of it can abut with any corner 143 of valve body 140 or straight line portion 144 out, because
This must also can ensure that head 142 and annulus even if valve body 140 is rotated centered on the P axis of Pcv valve 100 and changes posture
Gap X between 131.
Then, it is illustrated referring to the PCV access 200 that is equipped with Pcv valve 100 of the Fig. 5 for the present application.In addition,
The construction of PCV access 200 and existing PCV access 400 (referring to Fig. 7) the difference is that be equipped with Pcv valve 100, other
It constructs essentially identical.
As shown in figure 5, PCV access 200 is set to a part of engine, and the upstream side chamber by being connected to food tray and crankcase
Room 210, the downstream-side chamber 220 for being connected to air inlet side, connection upstream side cavity 210 and the cylindrical shape of downstream-side chamber 220
Access 230 and the Pcv valve 100 being installed in the access 230 are constituted.
The medial compartment 165 of the outer side tube part 160 of Pcv valve 100 and the secondary side interface being opened in downstream-side chamber 220
180 axis hole 163 and cross bore 164 connection.Therefore, from 165 side of medial compartment flow out gas blowby can in axis hole 163 straight ahead
And lead to 220 side of downstream-side chamber, on the other hand, the oil for being stranded in 220 side of downstream-side chamber can be inverse by cross bore 164
It flow to 165 side of medial compartment.
Then, a secondary chamber 116 of main part 110 and medial compartment 165 and it is opened in once flanking in upstream side cavity 210
Mouth 170 is connected to.Moreover, a secondary chamber 116 and medial compartment 165 constitute flow path 190.Valve body 140 is in flow path 190 along Pcv valve 100
Axis P move forwards, backwards.
In addition, the diameter of the axis hole 163 of Pcv valve 100 is less than medial compartment 165, and the front end inserted with axle portion 141.Instantly
When swimming the generation negative pressure of side cavity 220, the valve body 140 comprising its axle portion 141 is moved along axis P to secondary 180 side of side interface, and according to
Intubating length is determined with the balance of the bounce of spring 150, and the flow path area formed between axis hole 163 and axle portion 141 can root
Change according to insertion.Therefore, so that the circulation of the gas blowby between a side interface 170 and secondary side interface 180 meets rule
Fixed characteristic.
Moreover, the inner surface of the outer surface for the columned main part 110 being inserted into medial compartment 165 and medial compartment 165
It is sealed fluid tightly by containment member S1, therefore, the oil countercurrently gone out when valve body 140 is in open state from medial compartment 165 is not
It can be leaked out from the gap of the inner surface of the outer surface and medial compartment 165 of main part 110, and only can be certainly inverse from a secondary chamber 116
It flow to a side interface 170.
Moreover, a part in access 230 is equipped with and can screw togather the fixation hole H2 of screw etc., by so that fixation hole H2
Screw etc. is screwed togather with the fixation hole H1 of Pcv valve 100 mode penetrated through, and Pcv valve 100 is fixed in access 230.In turn,
Access 230 becomes the shape be inserted into for Pcv valve 100, and front and rear end is respectively by the containment member S2 of Pcv valve 100 and close
Seal component S3 sealing.Therefore, only allow oil and gas blowby via the flow path 190 of Pcv valve 100 in upstream side cavity 210 and downstream
It circulates between side cavity 220, reveal oil or gas blowby will not from the gap of access 230 and Pcv valve 100.
The movement of Pcv valve 100 and PCV access 200 is illustrated below.
Firstly, Pcv valve 100 shown in fig. 5 is in the state of non-turbine pressurization, for example, downstream-side chamber when engine stops
Pressure when pressure in 220 is zero or the engine of normality acts in downstream-side chamber 220 is the state of lower negative pressure.It should
Under state, spring 150 presses to 140 Xiang Yici side interface of valve body, 170 side.However, spring 120, which has, can resist the spring 150
Force and make valve body 140 to 119 phase of valve seat from the mobile elasticity in direction.Therefore, as shown in figure 5, spring 120 is via guarantor
It holds component 130 and makes valve body 140 and 119 phase of valve seat from keeping opening portion 118 open.It is stranded in downstream-side chamber 220 as a result,
Oil flows to a secondary chamber 116 out of secondary side interface 180 adverse current to medial compartment 165, through open opening portion 118, and via one
Secondary side interface 170 is back to upstream side cavity 210.
Then, the inblock cylinder when turbocharger carries out turbocharging, by the air to pressurize from air inlet side to engine
Out, therefore, the pressure being connected in the downstream-side chamber 220 of air inlet side becomes higher positive pressure.Then, as shown in fig. 6, utilizing
To the power that 140 Xiang Yici side interface of valve body, 170 side of direct draught is pushed, make valve body 140 in flow path 190 to primary side interface
170 sides are mobile, so that spring 120 be made to compress.Moreover, the portion 145 of taking a seat of valve body 140 is seated at the valve seat 119 of main part 110,
And keep opening portion 118 closed.The valve seat 119 becomes the shape to correspond to each other with portion 145 of taking a seat, therefore, opening portion 118 is airtight
Property block, prevent from entering to positive pressure intrusion one secondary chamber, 116 side of medial compartment 165 from downstream-side chamber 220.As a result, working as turbine
When pressurization, it can prevent the positive pressure acted in downstream-side chamber 220 from invading a secondary chamber 116 and acting on via a side interface 170
In upstream side cavity 210.
In turn, using containment member S1 that the outer peripheral surface of main part 110 and the inner surface of medial compartment 165 is hermetic close
Envelope, therefore, can prevent the positive pressure for entering to medial compartment 165 leak to the outer peripheral surface of main part 110 and along the outer peripheral surface round
Upstream side cavity 210 is invaded from the through hole 162 (referring to Fig.1) of outer side tube part 160.It, can more really as a result, when turbocharging
Ground prevents the positive pressure acted in downstream-side chamber 220 in upstream side cavity 210.
Moreover, the state being pressurized when from turbocharging shown in fig. 6 to non-turbine is (for example, downstream side when engine stops
Pressure when pressure in chamber 220 is zero or the engine of normality acts in downstream-side chamber 220 is the shape of lower negative pressure
State) transfer when, there is no by the power of 140 Xiang Yici side interface of valve body, 170 side of direct draught pushing.Then, compressed spring
120 natural lengths to be restored to, so that elastic force can be generated.Moreover, being flanked to secondary to valve body 140 using the spring 120
The elastic force of mouthful 180 sides pressure, make valve body 140 and 119 phase of valve seat from and make the opening of opening portion 118, to be again transferred to Fig. 5
Shown in state.
In this way, in the state of non-turbine pressurization, utilizing the pressure of spring 120 according to the Pcv valve 100 of the present application
Power makes valve body 140 become open state, and is connected to a side interface 170 with secondary side interface 180, can make to be stranded in down as a result,
The oil of trip side cavity 220 is back to 210 side of upstream side cavity.On the other hand, in the state of turbocharging, using by positive pressure
The valve body 140 of extruding make spring 120 compress, and make valve body 140 become closed state, thus by a side interface 170 with it is secondary
It is hermetic blocked between side interface 180, can prevent the positive pressure in downstream-side chamber 220 in upstream side cavity 210 as a result,
Side.
However, as shown in Figures 5 and 6, holding member 130 can utilize the contact surface contacted with the inner surface of medial compartment 165
133 and keep be moved forward and backward in flow path 190 with the posture that axis P substantially at right angles intersects.Moreover, spring 120 is held in the guarantor
Component 130 is held, therefore, will not loosen or be caught in from front end 111 to other components etc., it can swimmingly stretch along axis P.
In turn, as shown in figure 5, a part in the inner surface of medial compartment 165 is formed with the fastener 166 of scale shape, valve
Body 140 with 119 phase of valve seat from position on holding member 130 a part engage.The reason is that working as aftermentioned air-breathing
When the pressure of interface (220 side of downstream-side chamber) becomes higher negative pressure, even if spring 120 or holding member 130 are intended to be inhaled into
To secondary 180 side of side interface, fastener 166 can also be such that holding member 130 stops, and in turn, can also make to be held in holding member 130
Spring 120 stop, to prevent sucking.
Moreover, as shown in figure 5, using spring 120 via holding member 130 and to valve body 140 to secondary 180 side of side interface
Pressure, but not hinder the adverse current of the oil between valve body 140 and holding member 130.The reason is that holding member 130
Protruding portion 132 is connected to the head 142 of valve body 140, so, the annulus 131 of holding member 130 and the head 142 of valve body 140
Between be formed with gap X (referring to Fig. 4 (e)), oil can be by gap X and from medial compartment 165 swimmingly to a secondary chamber 116
Countercurrently.
In addition, other than the movement illustrated by Fig. 5 and Fig. 6 of the Pcv valve 100 of the present application, can also be achieved with it is existing
Pcv valve 300 similarly movement, i.e. as allow or control gas blowby circulation valve movement, therefore below briefly describe.
If the pressure of air-breathing interface (220 side of downstream-side chamber) becomes higher negative pressure, valve body 140 can be from shown in Fig. 5
State moved along axis P to secondary 180 side of side interface.Then, the axle portion 141 of valve body 140 is inserted into axis hole 163, according to bullet
The balance of the bounce of spring 150 determines intubating length, and the flow path area formed between axis hole 163 and axle portion 141 can be according to inserting
Enter amount variation.Therefore, so that the circulation of the gas blowby between a side interface 170 and secondary side interface 180 meets defined spy
Property.
In addition, the upstream side cavity in the present application is not limited to the chamber of separation oil, but the crankshaft with engine
The general designation of the part of the connections such as case or food tray, equally, downstream-side chamber be not limited to separation oil chamber, but with engine
The general designation of the part of air inlet side connection.It, can be moreover, the Pcv valve and PCV access of the present application are not limited to the specific embodiments
Various modifications example, combination, these variations, combination are formed in the range of the range recorded in claims, embodiment
Belong in the interest field of the present application.
The explanation of symbol
100:PCV valve
119: valve seat
120: applicator member
140: valve body
170: side interfaces
180: secondary side interface
190: flow path
200:PCV access
210: upstream side cavity
220: downstream-side chamber.
Claims (3)
1. a kind of Pcv valve set on the PCV access of engine, and includes
A side interface being opened in the side cavity of upstream；
The secondary side interface being opened in downstream-side chamber；
It is connected to the flow path of a side interface and the secondary side interface；
The valve body moved in the flow path；And
The valve seat taken a seat for the valve body；The Pcv valve is characterized in that:
The valve body and the valve seat are will can hermetic block between a side interface and the secondary side interface
Mode constitute,
For the valve body to make its with the valve seat mutually from pressuring direction applicator member,
The holding member for keeping the applicator member and being moved together with the applicator member along the axis of the Pcv valve, and have
With the fastener of a part locking of the holding member；
The holding member and the valve body are mutually independent component,
The holding member is when the valve body is mobile with secondary side interface side described in valve seat phase descriscent, by the fastener
It engages and stops.
2. Pcv valve according to claim 1, it is characterised in that:
The holding member has the protruding portion for being connected to the valve body.
3. a kind of PCV access of the engine of Pcv valve according to claim 1 or 2, it is characterised in that:
In the access of connection upstream side cavity and downstream-side chamber, the Pcv valve is installed,
Side interface of the Pcv valve is configured in the upstream side cavity,
The secondary side interface of the Pcv valve is configured in the downstream-side chamber.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015-046821 | 2015-03-10 | ||
| JP2015046821A JP6339952B2 (en) | 2015-03-10 | 2015-03-10 | PCV valve and PCV passage provided with the PCV valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105972221A CN105972221A (en) | 2016-09-28 |
| CN105972221B true CN105972221B (en) | 2019-08-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610116101.4A Active CN105972221B (en) | 2015-03-10 | 2016-03-01 | Pcv valve and PCV access with the Pcv valve |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6339952B2 (en) |
| CN (1) | CN105972221B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7218638B2 (en) * | 2019-03-20 | 2023-02-07 | 日本電産トーソク株式会社 | reflux valve |
| JP7218639B2 (en) * | 2019-03-20 | 2023-02-07 | 日本電産トーソク株式会社 | reflux valve |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5844414U (en) * | 1981-09-16 | 1983-03-25 | トヨタ自動車株式会社 | Flow control valve for blow-by gas reduction device of internal combustion engine |
| JPS60192821A (en) * | 1984-03-15 | 1985-10-01 | Honda Motor Co Ltd | Crank case ventilation device for internal-combustion engine |
| JPH03105776U (en) * | 1990-02-16 | 1991-11-01 | ||
| JP2638383B2 (en) * | 1991-10-23 | 1997-08-06 | 三菱マテリアル株式会社 | Valve for differential pressure |
| JP3075013B2 (en) * | 1993-05-11 | 2000-08-07 | 松下電器産業株式会社 | Gas shut-off valve |
| JPH1194112A (en) * | 1997-09-18 | 1999-04-09 | Fuji Electric Co Ltd | Isolation valve |
| JP4619959B2 (en) * | 2006-01-27 | 2011-01-26 | 愛三工業株式会社 | Composite valve and engine blow-by gas reduction device including the composite valve |
| US20080099000A1 (en) * | 2006-10-30 | 2008-05-01 | Aisan Kogyo Kabushiki Kaisha | PCV valve |
| US9187967B2 (en) * | 2011-12-14 | 2015-11-17 | 2M-Tek, Inc. | Fluid safety valve |
| JP5690132B2 (en) * | 2010-06-17 | 2015-03-25 | 株式会社マーレ フィルターシステムズ | Engine ventilation system |
| JP5680517B2 (en) * | 2011-10-31 | 2015-03-04 | 愛三工業株式会社 | Flow control valve |
| JP5812892B2 (en) * | 2012-02-17 | 2015-11-17 | 愛三工業株式会社 | Ejecta |
| JP6005508B2 (en) * | 2012-12-27 | 2016-10-12 | 愛三工業株式会社 | Flow control valve |
-
2015
- 2015-03-10 JP JP2015046821A patent/JP6339952B2/en active Active
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Also Published As
| Publication number | Publication date |
|---|---|
| JP2016166571A (en) | 2016-09-15 |
| JP6339952B2 (en) | 2018-06-06 |
| CN105972221A (en) | 2016-09-28 |
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Effective date of registration: 20170303 Address after: Japan Gifu County town 450 yuan Hui City Land Applicant after: Pacific Engineering Co., ltd. Address before: Tokyo, Japan, south of the Castle Peak two square, No. 1, No. 1 Applicant before: Honda Motor Co., Ltd. Applicant before: Pacific Engineering Co., ltd. |
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