CN100335771C - Internal combustion engine air intake apparatus with adjustable structure - Google Patents
Internal combustion engine air intake apparatus with adjustable structure Download PDFInfo
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- CN100335771C CN100335771C CNB2004100462948A CN200410046294A CN100335771C CN 100335771 C CN100335771 C CN 100335771C CN B2004100462948 A CNB2004100462948 A CN B2004100462948A CN 200410046294 A CN200410046294 A CN 200410046294A CN 100335771 C CN100335771 C CN 100335771C
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- pressure
- guiding channel
- pressure transducer
- combustion engine
- pressure guiding
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Abstract
This device is provided with the pressure sensor detecting pressure of intake air flowing inside a intake air passage 10a formed in an intake pipe (valve housing) 10, the circuit board on which the pressure sensor is mounted, and a pressure introduction passage 14 opening on the intake air passage and capable of introducing intake air to the pressure sensor. The pressure sensor 60 includes a sensing port part 0b detecting pressure. A seal member 80 including a pressure communication passage part 81 is arranged between the pressure sensor 60 and the pressure introduction passage 14. One end side 80a of the pressure communication passage part 81 of the seal member 80 is sealed at an outer circumference of the sensing port part 60b. Another end part 80b is put between a wall part 13 of the intake pipe partitioning the pressure introduction passage 14 opposite to the pressure communication passage part 81 and a holder member (casing) 70 and is sealed by surfaces.
Description
Technical field
The present invention relates to a kind of internal combustion engine air intake apparatus.
Background technique
According to disclosed prior art among the patent document JP-A-2002-235616, on a kind of air inlet tube wall of the air intake apparatus that is used for internal-combustion engine, a pressure transducer has been installed directly, be used for suction pressure is detected.Be shaped on a resinous fixed component on the air inlet tube wall integratedly, it is used for the abutment pressure sensor.Pressure transducer is directly connected on the pressure guiding channel, and this passage communicates with intake duct, is used for air inlet is drained into pressure transducer.The pressure guiding channel is a maze-type structure, thereby can prevent that the dirt bits from flowing in the pressure transducer.
In this existing structure, pressure transducer is directly connected on the pressure guiding channel.But pressure transducer but very big dislocation may occur with respect to substrate, the relative positioning that holds the members such as housing of substrate.Therefore, in assembling process, when the pressure transducer on being installed to substrate was connected on the air intake apparatus, the structural relation between pressure transducer and the pressure guiding channel for example may become the very big displacement of existence each other.Thereby, pressure transducer is installed in the suction tude (being air intake apparatus) can becomes very difficult.Even pressure transducer can be connected on the air inlet tube wall, the stress that produces in assembly process also can directly affact on the pressure transducer.Thereby pressure transducer or the substrate that pressure transducer is installed just may rupture.In addition, because the cracking of scolding tin, at pressure transducer with the fault that can occur circuit breaker in the substrate of pressure transducer is installed.
In addition, the pressure guiding channel is as adopting labyrinth structure, and then its shape will become complicated.Thereby the process of making the pressure guiding channel in the air inlet tube wall becomes difficult.
Summary of the invention
Consider above-mentioned problem, an object of the present invention is to design a kind of air intake apparatus, in this device, being installed in the location dislocation that occurs between pressure transducer on the conductive member and the pressure guiding channel can be resolved in assembly process, also avoided simultaneously applying external force to conductive member, conductive member wherein for example is a substrate.
Another object of the present invention provides a kind of air intake apparatus, in this device, location dislocation between the members such as pressure transducer and pressure guiding channel can be resolved at assembling process, simultaneously, be used for the air inlet drainage can be made as labyrinth structure cheaply to the passage of the pressure guiding channel of pressure transducer etc., enter into pressure transducer so that prevent the dirt bits.
In addition, further object of the present invention is to make a kind of air intake apparatus, and in this air intake apparatus, the location dislocation between pressure transducer and the pressure guiding channel can be resolved in assembling process, thereby is easy to finish assembly working.
Partly constitute by suction tude, pressure transducer, conductive member and pressure guiding channel according to a kind of air intake apparatus that is used for internal-combustion engine of the present invention.Suction tude has intake duct.Pressure transducer detects the suction pressure of the intake duct of flowing through.Conductive member carries out circuit with pressure transducer and is connected.The pressure guiding channel partly is formed in the suction tude, and leads to intake duct, thereby air inlet can be incorporated in the pressure transducer.Pressure transducer has the main body and the pressure measurement port that pressure is detected that are installed on the conductive member.Suction tude has tube wall parts, and it has constituted described pressure guiding channel part.
One sealing component has a pressure communication passage (the logical road of pressing), and this logical road of pressing is set between pressure transducer and the pressure guiding channel part.Sealing component has first one end side portion, and the peripheral part that it can tested basically pressure side mouth on diametric(al) seals.Sealing component has second one end side portion, and it is inserted between a wallboard part and the supporting member, thereby can seal mutually Face to face with them, so just can press the road partly to be communicated with the pressure guiding channel with leading to.
Thereby first one end side portion of sealing component and the pressure measurement port of pressure transducer seal diametrically mutually.In addition, second one end side portion is sealing mutually Face to face with the tube wall parts of the suction tude that has pressure guiding channel part.The sealing force that works between two parts that sealing face-to-face is to be produced by the extruding force that tube wall parts and support member are applied, and need not to apply external force to pressure transducer or conductive member, and conductive member wherein for example is substrate or metal construction.
On the one hand, second one end side portion of above-mentioned sealing component of the present invention defines a step shape part, and it engages with housing; And housing defines an anastomosis part along step shape part, so that second one end side portion of sealing component can be remained on wherein; Wherein be inserted into direction in the housing along conductive member, the anastomosis part has a groove part that is substantially U-shaped.
In another aspect of this invention, when air inlet system is installed to internal-combustion engine, the logical present position, road of pressing is higher than pressure guiding channel part, and wherein when being tilted one of at least in air inlet system and the internal-combustion engine installed even when liquid contained in the air inlet of the intake duct of flowing through is built up prearranging quatity in pressure guiding channel part, pressure guiding channel part is connected with logical pressure road; And wherein the shape of cross section of pressure guiding channel part is one to be circular shape substantially at the upwardly extending elongated hole or that hangs down substantially, and the size of the shape of wherein said circle makes that elongated hole is to be in contact with it in the inside of circle basically.
In addition, can solve the direction that pressure transducer and its installation component carry out the link position place and not align phenomenon.In addition, the location dislocation problem on surface direction also can achieve a solution, the direction when surface direction wherein is connected on the described installation component perpendicular to pressure transducer.By way of example, can be by adjusting the pressure measurement port and the axial insertion angle between sealing component first one end side portion sealing mutually diametrically, can solve the axial dimension variation one between partly of pressure transducer and pressure guiding channel is axial problem of misalignment.In addition, tube wall parts that sealing mutually by the adjusting range opposite and the displacement amount between the parts surface of sealing component the other end, can tackle and pressure transducer and pressure guiding channel part between change an i.e. dislocation on surface direction for example on the axial direction orthogonal direction.
Description of drawings
From the detailed description of hereinafter sitting with reference to accompanying drawing, can clearly realize that the present invention above-mentioned and other purpose, feature and advantage.In the accompanying drawings:
Fig. 1 is a part sectioned view, has represented the schematic structure of the internal combustion engine air intake apparatus of first embodiment of the invention;
Fig. 2 is the part sectioned view of air intake apparatus being done along II-II line among Fig. 1;
Fig. 3 is the general view that the III side from Fig. 1 is done air intake apparatus;
Fig. 4 A is the side view that the IV-IV side from Fig. 1 is done, expressed the parts around substrate, a pressure transducer and a sealing component, the plan view among Fig. 4 B has been expressed parts, pressure transducer and the sealing component around substrate;
Fig. 5 A is the side view that the V-V side from Fig. 1 is done, and has expressed parts and tube wall parts that constitute the pressure guiding channel around the pressure guiding channel, and Fig. 5 B is the part sectioned view of being done along the B-B line among Fig. 5 A;
State when the sectional drawing among Fig. 6 has represented that air intake apparatus is installed according to a fixed inclination;
Side view among Fig. 7 A has been expressed the parts around substrate, pressure transducer and the sealing component according to second embodiment of the invention, and the plan view among Fig. 7 B has been expressed parts, pressure transducer and the sealing component around substrate;
Side view among Fig. 8 A has been expressed the parts around substrate, pressure transducer and the sealing component according to third embodiment of the invention, and the plan view among Fig. 8 B has been expressed parts, pressure transducer and the sealing component around substrate; And
Side view among Fig. 9 A has been expressed the parts around substrate, pressure transducer and the sealing component according to four embodiment of the invention, and Fig. 9 B is the partial sectional view of being done along the B-B line among Fig. 9 A.
Embodiment
(first embodiment)
As depicted in figs. 1 and 2, an air intake apparatus is made as and has an air inlet restriction device (throttle valve device) 1, an air-strainer and an internal-combustion engine 300 (particularly, being the intake manifold of internal-combustion engine).Air intake apparatus can be adjusted the flow that sucks air-be the flow of charge air flow changeably according to the operating mode of internal-combustion engine.As hereinafter described, air intake apparatus also can be designed to only have the throttle valve device 1 that can carry out variable control to charge flow rate.When throttle valve device 1 is installed on the vehicle, it is coupled together airtightly with an air inlet duct (not expressing among the figure), on the direction of the charge air flow of throttle valve device 1, has an air-strainer 200 on upstream one side (air inlet upstream side) of air inlet duct.In addition, in the downstream of charge air flow one side, throttle valve device 1 is communicated with airtightly with the intake manifold 300a of internal-combustion engine 300.
As shown in Figure 2, valve casing 10 has constituted the part of a suction tude, and this suction tude is essentially cylindric, its with the air inlet drainage to internal-combustion engine 300.Have described intake duct 10a in the suction tude, its flow direction along air inlet extends in suction tude.
Return referring to Fig. 1, valve casing 10 is made with a peripheral wall portions 11 and two supporting portion 12a, 12b, and two supporting portion 12a, 12b are supporting two end portions 20a, the 20b (see figure 2) of valve rod 20 rotationally.Peripheral wall portions 11 has formed intake duct 10a therein, and the cross section of intake duct is made into to be essentially round-shaped.Supporting portion 12a, 12b are made into to be substantially drum, and are set on the bearing of trend (left and right directions among Fig. 2) of valve rod 20.Supporting portion 12a, 12b extend outward from peripheral wall portions 11.
As shown in Figure 2, valve rod 20 is made into to be essentially column, and it is being supported rotationally by two supporting portion 12a, 12b.Valve body 30 is fixed on the valve rod 20, and this valve rod 20 is between two supporting portion 12a, 12b.As shown in Figure 1, the rotation of valve rod 20 can make valve body 30 open or cover intake duct 10a.The shape of valve body 30 is known basically, and it can be regulated the variable open area ground of intake duct 10a, thereby intake duct 10a is become the complete opening state from buttoned-up status.
An end 20a of valve rod 20 is installed among the supporting portion 12a, and the other end 20b then passes supporting portion 12b and is connected with a lever piece 90.As shown in Figure 3, lever piece 90 has a hook hole 91, and for example an acceleration cable clasp joint is on this hook hole 91.The action of acceleration cable is with synchronous to the operation of vehicle accelerator pedal.Lever piece 90 changes the tractive action of acceleration cable into spinning movement, thereby will pass to valve rod 20 by the warping force that the external world is applied on the lever piece 90.Lever piece 90 has constituted a warping force bringing device, and it applies warping force to valve rod 20.
This warping force bringing device also is not limited in by external mechanical force and carries out device driven by means of lever piece 90, and mechanical force wherein is synchronous with the action of accelerator pedal.The warping force bringing device can be the electronic external force device driven that is produced by a motor (not shown), and motor wherein is used for that side of actuate valve stem 20 end 20b rotationally.If valve rod 20 is driven by motor, then preferably: the driving force of motor is to pass to valve rod 20 by means of the mechanisms such as reduction gear that are arranged between motor and the valve rod 20.In the case, can use miniature motor (driving force that it produced is less relatively), be the size realization miniaturization of air intake apparatus 1 thereby can make throttle valve device one.As described below such, in this embodiment, the warping force bringing device is an extraneous mechanical force device driven that is applied by lever piece 90.
Return referring to Fig. 1, bias spring 40 is hooked onto on the lever piece 90 again.Bias spring 40 is actuated valve rod 29 by means of the lever piece 90 that is taken as the warping force bringing device on sense of rotation.In throttle valve device, used at least one bias spring 40 herein.Can on the sense of rotation that makes the valve body 30 that links to each other with valve rod 20 with intake duct 10a sealing, actuate valve rod 20 if used a plurality of (for example two) bias spring 40, two bias springs.Scheme as an alternative, wherein a bias spring 40 can be actuated the valve body 30 that is connected with valve rod 20 in that valve body 30 is closed on the sense of rotation of intake duct 10a (closing the valve direction).In addition, another bias spring 40 can be actuated valve body 30 on the sense of rotation (valve opening position) that makes valve body 30 unlatching intake duct 10a.In the description to this mode of execution, a bias spring 40 applies effect to valve body 20 (specifically being end 20a) on the direction that valve cuts out hereinafter.
As shown in Figure 3, a screw rod 93 is used as limit stoper, is used to set the minimum that lever piece 90 can be rotated to and reverses the position.Utilize a retaining member 92 that screw rod 93 is fixed on the valve casing 10, retaining member 92 wherein for example is a support.When stopping that the warping force bringing device implemented control-during for example when the pedal force on the release the accelerator pedal, valve rod 20 is understood under the effect of the bias force (motivator) of bias spring 40, is being closed on the valve direction and rotating.In this case, screw rod 93 can be limited to valve rod 20 on the preposition, and on this position, valve body 30 is for example from its closed fully state, on valve opening position that intake duct 10a is open-minded slightly.
Screw rod 93 and retaining member 92 have constituted limit stoper.Bias spring 40 and limit stoper are set at the 20b place, end of valve rod 29, and the warping force that is applied by the warping force bringing device just acts on this end.That is to say that bias spring 40 and limit stoper are set on the peripheral wall portions 11 that is positioned at supporting portion 12b one side.
Pressure transducer 60-particularly is configured to be parallel to substantially valve rod 20 for having a basic pressure measurement port 60b-for lengthwise extension port cylindraceous, but separates with valve rod 20.As shown in Figure 1, the first pressure guiding channel 14 that has an elongated passageway is configured to extend along valve rod 20, thereby can be arranged essentially parallel to valve rod 20 but separate with valve rod 20.The first pressure guiding channel 14 has an opening that leads to intake duct 10a.In most of interval of valve body 30 aperture scopes, the opening of the first pressure guiding channel 14 is positioned at valve body 30 downstreams one side with respect to the air of the intake duct 10a that flows through.The result is exactly: can prevent to be subjected to by pressure transducer 60 detected pressure the influence of charge air flow.
The first pressure guiding channel 14 is formed in the peripheral wall portions 11 (particularly being wallboard part 13) of supporting portion 20a one side.Wallboard part 13 is made one with peripheral wall portions 11, and extends outward from peripheral wall portions 11 (see figure 2)s.Has the first pressure guiding channel 14 in the wallboard part 13.The structure that the shape of wallboard part 13 is not limited in is shown in Figure 2, extend outward and separate with supporting portion 12a from peripheral wall portions 11.Wallboard part 13 can be made as one with supporting portion 12a, and is rendered as the shape that extends outward from peripheral wall portions 11.
The second pressure guiding channel 81 is formed in the sealing component 80, and sealing component is for example made with rubber materials such as nitrile butadiene rubber or resinite material.Sealing component 80 is arranged to butt and the wallboard part 13 that wherein is shaped on the first pressure guiding channel 14.Sealing component 80 is disposed between the pressure transducer 60 and the first pressure guiding channel 14.Specifically, sealing component 80 is disposed in pressure transducer 60 and has wherein formed between the wallboard part 13 of the first pressure guiding channel 14.Sealing component 80 and wallboard part 13 are arranged to abut against mutually, thereby can the second pressure guiding channel 81 and the first pressure guiding channel in wallboard part 13 in sealing component 80 be interconnected.The shape of the second pressure guiding channel 81 is formed and can seals being essentially columnar pressure measurement port 60b on the diametric(al) of pressure measurement port 60b.That is to say that the shape of the second pressure guiding channel 81 is formed and can seals pressure measurement port 60b diametrically.
Herein, the second pressure guiding channel 81 penetrates sealing component 80.The open part of the second pressure guiding channel, 81 1 ends (the first one end side portion 80a) is positioned at pressure measurement port 60b one side of pressure transducer 60 in the sealing component 80.The open part of the second pressure guiding channel, 81 the other ends (the second one end side portion 80b) butt the wallboard part 13 of peripheral wall portions 11 in the sealing component 80.The first one end side portion 80a and the second one end side portion 80b have constituted sealing component 80.As depicted in figs. 1 and 2, the first one end side portion 80a of sealing component 80 is arranged to and can engages with pressure transducer 60 (particularly being the peripheral part of pressure measurement port 60b).The first one end side portion 80a is plugged on the peripheral part of pressure measurement port 60b in the axial direction, thereby can realize the first one end side portion 80a and the mutual sealing diametrically of pressure measurement port 60b outer circumferential face.The second one end side portion 80b of sealing component 80 is arranged to and can abuts to mutually with the wallboard part 13 of peripheral wall portions 11.The second one end side portion 80b is inserted between a wallboard part 13 and the housing 70 (substrate housing case), and making an end face 13a of wallboard part 13 and the end face 80bb of the second one end side portion 80b seal Face to face mutually, housing 70 wherein is used as a supporting member.In this situation, the second one end side portion 80b and wallboard part 13 are sealing Face to face mutually, thus the second pressure guiding channel 81 are communicated with the first pressure guiding channel 14.
The substrate 50 that pressure transducer 60 is installed is accommodated in the substrate reception housing (conductive member storage case) 70.
Thereby, can utilize by wallboard part 13 and substrate reception housing 70 to the extruding force that sealing component 80 applies, produce and act between wallboard part 13, sealing component 80 and the substrate housing case 70 sealing force at sealing position face-to-face.In addition, need not to apply external force and just can produce sealing power to pressure transducer 60 or substrate 50 that sensor is installed.The result is exactly, when sealing component 80 is connected to a certain member (particularly being wallboard part 13) when going up, can prevent from sealing component 80 is connected to that this member (wallboard part 13) is gone up and the stress that produces to pressure transducer 60.Thereby, can prevent that pressure transducer 60 and substrate 50 are damaged or owing to snapping fault such as occur opening circuit.
In addition, in the manufacture process of throttle valve device 2 with above-mentioned structure, can deal with the axial dimension variation between the pressure transducer 60 and the first pressure guiding channel 14 by regulating the pressure measurement port 60b and the axial insertion degree between the first one end side portion 80a sealing mutually diametrically.That is to say, by regulating the axial insertion degree between pressure measurement port 60b and the sealing component 60 first one end side portion 80a, can solve the first pressure guiding channel 14 location dislocation problem in a longitudinal direction of the pressure measurement port 60b and wallboard part 13 lengthwises of pressure transducer 60 lengthwises.
In addition, the end face 80bb of the sidewall end face 13a of side member 13 and sealing component 80 second one end side portion 80b is sealing Face to face mutually.Thereby, can be by adjusting the displacement amount on surface direction between wallboard part end face 13a and the sealing component end face 80bb, solve pressure transducer 60 and wallboard part 13 perpendicular to the variable in distance (being the dislocation on the surface direction) on the above-mentioned axial direction.The result is exactly that in pressure transducer 60 and wallboard part 13 contacting points such as member such as grade, the poor direction phenomenon can be solved.In addition, also can solve the inconsistent phenomenon on surface direction, be connected to position on the member (wallboard part 13) at pressure transducer 60, wherein surface direction is with axially vertical.
Supporting member also is not limited only to substrate reception housing 70, it also can be the member of other form, thereby as long as this member can be pressed onto the second one end side portion 80b on the wallboard part 13 wallboard part end face 13b and sealing component end face 80bb are sealed together Face to face.If substrate reception housing 70 is used as supporting member, then need not to be provided with any other member for support, wallboard part 13 just can seal Face to face mutually with the second one end side portion 80b of sealing component 80.
As shown in Figure 2, substrate reception housing 70 has an open part 71, can be inserted in this part such as the conductive member of substrate etc.Herein, substrate 50 is made into a printed circuit board (PCB) 51, and the electronic unit 52 of pressure transducer 60 and intergrated circuit as shown in Figure 1 and semiconductor devices etc. is installed on this circuit board 51.Electronic unit 52 utilizes the circuit connection (not shown) on printed circuit board (PCB) 51 with pressure transducer 60 and couples together.Circuit connection is connected with an external terminal 53 holding circuits, and external terminal is used to receive the information signal that is transported from wire harness by extraneous parts or outwards sends signal.External terminal 53 also is used to information such as control signal are sent to extraneous parts through wire harness.External terminal 53 is connected with a connector assembly 54.Conductive member and substrate reception housing 70 such as substrate 50 grades have been formed a control gear (ECU), and its work to internal-combustion engine is controlled.The working condition of ECU is identical with a computer, therein, a ROM (read-only memory) (ROM), a random access storage device (RAM), a microprocessor (CPU), an input port and an output port are connected with each other by two-way bus (not shown).
Herein, pressure transducer 60 might not be installed on the substrate 50.Pressure transducer 60 can be installed on the sheet metal, and the sheet metal that pressure transducer 60 will be installed again is installed in the substrate reception housing 70.As long as pressure transducer 60 is installed on any conductive member (for example substrate and sheet metal), and conductive member is installed in the substrate reception housing, and then throttle valve device 1 can adopt structure arbitrarily.
As shown in Figure 1, a side 72 of substrate reception housing 70 peripheral parts is used as a supporting member, and it is used for the other end 80b of sealing component 80 is shored with the end face 13a of wallboard part 13.72 the plane along the side, a flange portion 73 extends outward from substrate reception housing 70.Flange portion 73 utilizes screw 98 elements such as grade to be fixed on the peripheral wall portions 11 (particularly being an arm portion 19).
As shown in Figure 2, preferably,, in open part 71, form guide rail 74 along the bearing of trend of substrate 50, thus can be to being inserted into substrate 50 channeling conducts in the open part 71.Thereby, when the pressure transducer 60 on being installed in substrate 50 is coupled together with sealing component 80, sealing component 80 (particularly being step part 80ba) can be along an anastomosis part 75 (see figure 4)s at the direction of insertion superior displacement, and anastomosis part wherein is formed in the substrate reception housing 70.Thereby, can substrate 50 be inserted into pre-position in the substrate reception housing 70 along guide rail 74.Thereby, even sealing component 80 is not a rigid member, under the situation of utilizing 74 pairs of substrate 50 channeling conducts of guide rail, the relative position between substrate 50 and the substrate reception housing 70 also can firmly be remained on the precalculated position in the substrate reception housing 70.
Herein, shown in Fig. 4 B, the second one end side portion 80b has step part 80ba, and it can engage with substrate reception housing 70.In addition, shown in Fig. 4 A and Fig. 4 B, specifically 70-can form with the step part 80ba of sealing component 80 for side 72 at the substrate reception housing, and has an anastomosis part 75, and it can remain on the second one end side portion 80b wherein.Thereby step part 80ba and anastomosis part 75 can be bonded with each other, thereby sealing component 80 and substrate reception housing 70 temporarily can be assembled up.Thereby the pressure measurement port 60b that is installed in the pressure transducer 60 on the substrate 50 can be connected on the first one end side portion 80a of sealing component 80, and then seals mutually diametrically.In addition, before carrying out permanent assembling, when the substrate 50 that pressure transducer 60 is installed is installed in the substrate reception housing 70, for example also can between pressure transducer 60 and sealing component 80, carry out interim assembling, in the permanent assembling work therein, each parts that temporarily assemble are fixed.
In addition, in this embodiment, preferably, be inserted into direction of insertion in the substrate reception housing 70, in anastomosis part 75, be shaped on one and be the groove part 76 of U-shaped (referring to Fig. 4 A) substantially along substrate 50.In addition, when substrate 50 was inserted in the substrate reception housing 70, the anastomosis part 75 that the step part 80ba of sealing component 80 can form on substrate reception housing 70 was inserted into.
In addition, preferably, the step part 80ba of sealing component 80 is formed a trench portions, and its anastomosis part 75 with substrate reception housing 70 remains on wherein.Thereby, when substrate 50 is inserted in the substrate reception housing 70, can step part 80ba easily be inserted with anastomosis part 75, step part 80ba is connected in the U-shaped groove part 76 of substrate reception housing 70 thus.
In the air conduction of the intake duct 10a that will the flow through passage in the pressure transducer 60, preferably make the cross section of the first pressure guiding channel 14 and the cross section of the second pressure guiding channel 81 overlapped slightly or not overlapped herein.More preferably, the wallboard part 13 of the second one end side portion 80b of sealing component 80 and peripheral wall portions 11 one of at least in be shaped on a step 15a.The second one end side portion 80b and wallboard part 13 are sealing each other Face to face, have so just formed cascade passage 15.In this embodiment, step 15a is formed in the wallboard part 13.Cascade passage 15 can communicate with the first pressure guiding channel 14, the second pressure guiding channel 82.
Like this, the fluid of the flow through first pressure guiding channel 14, cascade passage 15 and the second pressure guiding channel 81 is turned.Thereby, air inlet has been made as labyrinth structure from intake duct 10a drainage to the passage of pressure transducer 60.The result is exactly even comprise foreign material such as oil, dirt in the air inlet, can prevent that also these impurity from entering into pressure transducer 60.
Labyrinth structure is made of the second pressure guiding channel 81 in sealing component 80, the first pressure guiding channel 14 and cascade passage 15 in wallboard part 13.Cascade passage 15 is by constituting built in the two step 15a in one of at least of the end face 80bb of another one end side portion of sealing component 80b and wallboard part 13 end face 13a.Wherein end face 80bb and end face 13a face mutually.Can utilize technologies such as molding and forming, cutting easily to make step 15a from the side of sealing component end face 80bb and/or wallboard part end face 13a.Thereby, need not to carry out processing such as undercutting and just can make labyrinth structure.The result is exactly that throttle valve device 1-is that the air intake apparatus 1 of internal-combustion engine 300 can be produced cheaply.
As Fig. 1 and shown in Figure 6, preferably, when throttle valve device 1 was installed on the internal-combustion engine 100, the second pressure guiding channel, 81 present positions were higher than the first pressure guiding channel 14.In detail, preferably, the vertical minimum point 81p that is positioned on the second pressure guiding channel, 81 openings of the second one end side portion 80b, one side is higher than the vertical minimum point 14p of opening on the first pressure guiding channel, the 14 open part 14a of intake duct 10a one side.Thereby, even contained moisture and liquid is introduced in the pressure guiding channel 14 in the air inlet, also can be blocked in low and lead in the pressure guiding channel 14 of pressure transducer 60 such as the liquid of water etc. than the second pressure guiding channel 81.The result is exactly to prevent that liquid from flowing in the pressure transducer 60.Herein, as Fig. 1 and shown in Figure 6, the upper and lower among the figure shown in the arrow is to having represented Vertical direction.
In addition, preferably, when throttle valve device 1 or the internal-combustion engine 100 that has this throttle valve device 1 are installed by deflection, even accumulation has taken place in water and liquid contained in the atmosphere, for example when the mounting point is in maximum inclination, the shape of the first pressure guiding channel 14 should guarantee also that it can not be blocked and clog.In detail, the vertical peak of the first pressure guiding channel 14 on the opening of wallboard part end face 13a one side preferably is higher than the vertical minimum point 14p of the first pressure guiding channel, 14 open part 14a, and open part 14a wherein leads to intake duct 10a one side.Thereby even contained water and liquid has been built up predetermined amount in the air inlet in the first pressure guiding channel 14, pressure transducer 60 also can detect the pressure of air inlet.
Shown in Fig. 5 A and Fig. 5 B, the shape of cross section of the first pressure guiding channel 14 is preferably the elongated hole shape, and this elongated hole is to extend in vertical direction basically.Herein, Vertical direction is meant this direction: on this direction, the cross-section center of the cross-section center of the first pressure guiding channel 14 and the second pressure guiding channel 81 couples together along V-V line direction among Fig. 1 or plummet direction.Thereby, can guarantee to accumulate in the water in the first pressure guiding channel 14 or the liquid level (Fig. 6) of liquid and can reach predetermined height, thereby make the first pressure guiding channel 14 be not easy to get clogged.
In addition, preferably, the open part 14a that the first pressure guiding channel 14 leads to intake duct 10a projects among the intake duct 10a.In this structure, by way of example, even the inner circle wall of contained water or liquid runs down intake duct 10a flows in the air inlet of the intake duct 10a that flows through, the open part 14a that projects among the intake duct 10a can prevent that also liquid from entering into the first pressure guiding channel 14.
In the above-described embodiment, preferably, pressure transducer 60 and the ECU that is connected with pressure transducer 60 holding circuits are set at that side of supporting portion 12a, and this side is the opposition side of supporting portion 12b, and bias spring 40 is set at that side (see figure 1) of supporting portion 12b.Thereby, for the throttle valve device 1 of the ECU that has pressure transducer 60 and constitute by pressure transducer 60 and substrate 50, can easily arrange to hold the layout of the substrate reception housing 70 of ECU, thereby can more freely arrange each parts.
In addition, in the above-described embodiment, preferably, valve casing 10 has a plurality of arm portions 19, and these parts are around wallboard part 13, so that can support substrate reception housing 70.In addition, preferably, forming a predetermined space facing to propping up between arm portion 19 and the wallboard part 13 of substrate reception housing 70 facing to sealing component 80.Like this, can consolidate the structural relation (see figure 1) between wallboard part 13, substrate reception housing 70 and the sealing component 80 that is arranged between the arm portion 19, thereby can easily carry out assembly working.
In addition, preferably, between an arm portion 19, formed a space 18, seen sealing component 80 and wallboard part 13 so that can pass this space 18.Thereby, can guarantee to be arranged on wallboard part 13, the substrate reception housing 70 between the arm portion 19 and be inserted into wallboard part 13 and substrate reception housing 70 between the mutual structural relation of sealing component 80, thereby be easy to finish assembly working.
[second embodiment and the 3rd embodiment]
Shown in Fig. 7 A and Fig. 7 B, in second embodiment of substrate reception housing 70, shape described in first embodiment, that have the anastomosis part 75 of the groove part 76 that is essentially U-shaped is formed one and is essentially circular anastomosis part 175.
One sealing component 180 is made of the first one end side portion 80a and the second one end side portion 180b, and the second one end side portion 180b has one and is essentially circular step-like portion 180ba.An end face of one sealing surfaces 180bb and wallboard part 13 is realized sealing, and this end face and the second one end side portion 180b face mutually Face to face.Anastomosis part 175 is formed along the peripheral part of step-like portion 180ba, thereby can engage with step-like portion 180ba.Thereby, anastomosis part 173 be made into step-like portion 180ba similar-also be essentially circular.
In identical with first mode of execution like this structure, also can solve pressure transducer 60 and be connected to the direction inconsistent phenomenon that wallboard part 13 places such as member such as grade occur.In addition, the location dislocation phenomenon on surface direction also can achieve a solution, and surface direction wherein is connected to direction on the member perpendicular to pressure transducer 60.In addition, sealing component 180 can temporarily be assembled with substrate reception housing 70, so that will be installed on the first one end side portion 80a that the pressure measurement port 60b of the pressure transducer 60 on the substrate 50 is connected to sealing component 80, thereby just can be implemented in the mutual sealing that the footpath makes progress.Like this, identical with first embodiment, can when being installed to substrate reception housing 70, carry out by substrate 50 provisional assembling.
In the 3rd embodiment shown in Fig. 8 A and Fig. 8 B, the step-like portion 180b described in second embodiment is made into one and is essentially columnar stepped portion 280ba (seeing Fig. 8 B), so that can engage with the pressure measurement port 60b of pressure transducer 60.
In this structure, also can produce function with the second mode of execution equivalence.In addition, the shape of sealing component 80 is also simplified.
[the 4th embodiment]
In the 4th embodiment, describe among first embodiment, cross section be the first pressure guiding channel 14 of vertical elongated shape be formed into shown in Fig. 9 A and Fig. 9 B, cross section is substantially the first circular pressure guiding channel 114.
Preferably, the size that is substantially the first circular pressure guiding channel 114 makes elongated hole described in the embodiment that wins haply round-shaped contacting inner and cardinal principle.Thereby water or liquid can be accumulated to predetermined liquid level, thereby make the first pressure guiding channel 14 be not easy to take place to block.Than the long hole shape of the first pressure guiding channel 14, be essentially the first circular pressure guiding channel 114 and can hold more substantial liquid, thereby it is blocked that passage is not easy to.
In above-mentioned several mode of executions, the throttle valve device 1 that has pressure transducer 60 and ECU has been described.Yet as an example, the equipment such as air inlet module that are made of throttle valve device 1 and intake manifold 300a also can adopt structure of the present invention.
If have between the wallboard part and substrate reception housing that the sealing component of the second pressure guiding channel is set at suction tude in the air inlet module, then except first one end side portion of sealing component is got up the pressure measurement port sealing of pressure transducer diametrically, thereby opposite side is inserted into the wallboard with first pressure guiding channel partly and between the substrate reception housing can make them seal mutually Face to face, under this condition, can use any device, wherein, the wallboard part is extended from the intake duct of throttle valve device.
In the above-described embodiment, substrate 50 is used to describe and a kind of pressure transducer 60 main body 60a devices is installed, and substrate is received in the substrate reception housing 70.But the device that pressure transducer 60 main body 60a are installed is not limited in above-mentioned substrate, and this device can be the conductive member of sheet metal etc.
Under prerequisite not, can do the change and the replacement of various ways to above-mentioned various mode of executions departing from design philosophy of the present invention.
Claims (9)
1. air intake apparatus that is used for internal-combustion engine comprises:
Suction tude (10), it defines an intake duct (10a);
Pressure transducer (60), its suction pressure to the intake duct of flowing through (10a) detects;
Conductive member (50), it carries out circuit with pressure transducer (60) and is connected;
Pressure guiding channel part (14), this channel part is formed in the suction tude (10), and leads to intake duct (10a), thereby air inlet can be incorporated in the pressure transducer (60);
Sealing component (80,180,280), this component limit the one logical road (81) of pressing, and make and should logically press road (81) to be positioned at pressure transducer (60) and pressure guiding channel partly between (14); And
Supporting member (70), its at least a portion with sealing component (80,180,280) supports to suction tude (10);
Wherein, pressure transducer (60) has a main body (60a) and the pressure measurement port (60b) that pressure is detected that is installed on the conductive member (50);
Suction tude (10) has tube wall parts (13), wherein defines to have constituted described pressure guiding channel part (14);
Sealing component (80,180,280) has first one end side portion (80a), in this part, logical press road (81) substantially on diametric(al) the peripheral part of tested pressure side mouth (60b) seal; And
Sealing component (80,180,280) has second one end side portion (80b, 180b, 280b), it is inserted between suction tude (10) wallboard part (13) and the supporting member (70), thereby second one end side portion (80b, 180b, 280b) and wallboard part (13) are being sealed Face to face mutually, will lead to simultaneously and press road (81) and pressure guiding channel part (14) to be interconnected;
Wherein supporting member (70) is a housing (70), and it has admitted described conductive member (50);
Wherein when air inlet system (1) was installed to internal-combustion engine (300), the logical present position, road (81) of pressing was higher than pressure guiding channel part (14), and
Wherein when being tilted one of at least in air inlet system (1) and the internal-combustion engine (300) installed even when liquid contained in the air inlet of the intake duct of flowing through (10a) is built up prearranging quatity in pressure guiding channel part (14), pressure guiding channel part (14) with lead to pressure road (81) and be connected; And
Wherein the shape of cross section of pressure guiding channel part (14) is one substantially in a upwardly extending elongated hole or the basic shape for circular (114) of hanging down, and the size of the shape of wherein said circle makes that elongated hole is to be in contact with it in the inside of circular (114) basically.
2. the air intake apparatus that is used for internal-combustion engine according to claim 1, it is characterized in that: mutually sealing face-to-face, wherein formed second one end side portion (80b) in logical pressure road (81) and the wallboard part (13) that has wherein formed pressure guiding channel part (14) one of at least on, formed a step body (15a), so that form a cascade passage (15), it is connected with logical road (81) and the pressure guiding channel part (14) of pressing.
3, the air intake apparatus that is used for internal-combustion engine according to claim 1 is characterized in that:
Pressure guiding channel part (14) defines an open part (14a), and it leads to suction tude (10a) side; And
Open part (14a) projects in the suction tude (10a).
4, the air intake apparatus that is used for internal-combustion engine according to claim 1 is characterized in that: also comprise:
Valve casing (10), it has wallboard part (13), and defines intake duct (10a);
Valve rod (20), it is supported in the valve casing (10) rotationally;
Valve body (30), it is connected with valve rod (20), is used for changing changeably the opening area of intake duct (10a); And
Bias spring (40), it is setovered to valve rod (20) on a torsional direction.
5, the air intake apparatus that is used for internal-combustion engine according to claim 4 is characterized in that:
Have supporting portion (12a, 12b) on the valve casing (10), this supporting portion (12a, 12b) is arranged on the bearing of trend of valve rod (20); And
Pressure transducer (60) is set at a side of a described supporting portion (12a), and this supporting portion is positioned at a side opposite with another supporting portion (12b), and bias spring (40) is set on another supporting portion (12b).
6, the air intake apparatus that is used for internal-combustion engine according to claim 4 is characterized in that: pressure transducer (60) is configured to be arranged essentially parallel to valve rod (20).
7, the air intake apparatus that is used for internal-combustion engine according to claim 4 is characterized in that: pressure guiding channel part (14) is configured to be arranged essentially parallel to valve rod (20).
8, the air intake apparatus that is used for internal-combustion engine according to claim 4 is characterized in that:
Valve casing (10) has a plurality of arm portions (19), and they are used to keeping supporting member (70) around wallboard part (13); And
Propping up arm portion (19) and wallboard part (13) is separated by a predetermined space (18).
9, the air intake apparatus that is used for internal-combustion engine according to claim 4 is characterized in that:
Valve casing (10) has a plurality of arm portions (19), and they are used to keeping supporting member (70) around wallboard part (13);
A plurality of arm portions (19) have surrounded a space (18), and it is positioned between each arm portion (19); And
Sealing component (80) and wallboard part (13) are set at a position, can see sealing component (80) and wallboard part (13) through described space (18) in this position.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003158377 | 2003-06-03 | ||
| JP158377/2003 | 2003-06-03 | ||
| JP131782/2004 | 2004-04-27 | ||
| JP2004131782A JP4306529B2 (en) | 2003-06-03 | 2004-04-27 | Intake device for internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1573077A CN1573077A (en) | 2005-02-02 |
| CN100335771C true CN100335771C (en) | 2007-09-05 |
Family
ID=34196694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100462948A Expired - Fee Related CN100335771C (en) | 2003-06-03 | 2004-06-03 | Internal combustion engine air intake apparatus with adjustable structure |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4306529B2 (en) |
| CN (1) | CN100335771C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5987877B2 (en) | 2013-10-04 | 2016-09-07 | 株式会社デンソー | Electronic throttle |
| DE102016101622B4 (en) * | 2016-01-29 | 2021-10-21 | Pierburg Gmbh | Emission control device for an internal combustion engine |
| CN109159902B (en) * | 2018-08-23 | 2020-08-21 | 金湖县农副产品营销协会 | Drainage mechanism for air inlet of unmanned aerial vehicle engine |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5386730A (en) * | 1992-06-25 | 1995-02-07 | Nippondenso Co., Ltd. | Pressure sensor having a sealed water-resistant construction |
| CN1142606A (en) * | 1995-05-13 | 1997-02-12 | 罗伯特-博希股份有公司 | Pressure sensor for an internal combustion engine having an intake manifold |
| US5834652A (en) * | 1996-08-15 | 1998-11-10 | Mitsubishi Denki Kabushiki Kaisha | Pressure sensing device with elastic sealing member and method of easy installation |
| US5945606A (en) * | 1996-08-30 | 1999-08-31 | Desno Corporation | Elastic member, and method and structure for attaching sensor to sensor attachment member using the same |
| JP2003148175A (en) * | 2001-11-12 | 2003-05-21 | Keihin Corp | Throttle device |
-
2004
- 2004-04-27 JP JP2004131782A patent/JP4306529B2/en not_active Expired - Fee Related
- 2004-06-03 CN CNB2004100462948A patent/CN100335771C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5386730A (en) * | 1992-06-25 | 1995-02-07 | Nippondenso Co., Ltd. | Pressure sensor having a sealed water-resistant construction |
| CN1142606A (en) * | 1995-05-13 | 1997-02-12 | 罗伯特-博希股份有公司 | Pressure sensor for an internal combustion engine having an intake manifold |
| US5834652A (en) * | 1996-08-15 | 1998-11-10 | Mitsubishi Denki Kabushiki Kaisha | Pressure sensing device with elastic sealing member and method of easy installation |
| US5945606A (en) * | 1996-08-30 | 1999-08-31 | Desno Corporation | Elastic member, and method and structure for attaching sensor to sensor attachment member using the same |
| JP2003148175A (en) * | 2001-11-12 | 2003-05-21 | Keihin Corp | Throttle device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2005016516A (en) | 2005-01-20 |
| JP4306529B2 (en) | 2009-08-05 |
| CN1573077A (en) | 2005-02-02 |
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Granted publication date: 20070905 Termination date: 20120603 |