CN100420921C - Device for determining at least one parameter of a medium flowing in a conduit - Google Patents
Device for determining at least one parameter of a medium flowing in a conduit Download PDFInfo
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- CN100420921C CN100420921C CNB2004800201452A CN200480020145A CN100420921C CN 100420921 C CN100420921 C CN 100420921C CN B2004800201452 A CNB2004800201452 A CN B2004800201452A CN 200480020145 A CN200480020145 A CN 200480020145A CN 100420921 C CN100420921 C CN 100420921C
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/18—Circuit arrangements for generating control signals by measuring intake air flow
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/68—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using thermal effects
- G01F1/684—Structural arrangements; Mounting of elements, e.g. in relation to fluid flow
- G01F1/6842—Structural arrangements; Mounting of elements, e.g. in relation to fluid flow with means for influencing the fluid flow
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Measuring Volume Flow (AREA)
Abstract
The invention relates to previously known devices for determining at least one parameter of a medium flowing in a conduit, especially for determining the air mass flow rate in the intake manifold of an internal combustion engine, said devices comprising a conduit part (3) and a sensor unit (1) with a bypass part (6). In order to prevent the flow from separating on the sidewalls of the bypass part, a flow-deflecting part (2) is disposed upstream from the bypass part relative to the main flow direction (18) in the conduit part (3). Said flow-deflecting part (2) is provided with at least one deflection area (20) that faces the main flow direction (18) and is regularly bent on both sides towards the two sidewalls (16, 17) starting from an apex line (25) located at a distance from the bypass part (6) in such a way that the ends of the deflection area (20), which face away from apex line, are aligned with the sidewalls (16, 17).
Description
Technical field
The present invention relates to a kind of device that is used for determining at least one parameter of the medium that flows at pipeline.
Background technology
This device is for example openly reached in the air intake duct (Ansaugtrak) that for example uses at internal combustion engine by DE 10135142A1, so that determine to give by a pipeline transportation MAF of internal combustion engine.The section that is provided with bypass member of a sensor device is inserted in the conduit component by a patchhole.This bypass member has a channel architecture that has entrance area, branches out a measurement passage that is provided with measuring sensor by this entrance area.Input area also has a Disengagement zone that has at least one separating opening, and this separating opening opens wide in heavy connection of pipe at least one sidewall of bypass member.The Disengagement zone is used for from channel architecture separating liquid particle and/or solid particle, will prevent that thus them from entering measurement passage and the measuring contamination element that is provided with measuring sensor.
The seamed edge that is made of end face and the sidewall in face of the main flow direction that insert ducted bypass member constitutes the seamed edge that becomes a mandarin in known device, on becoming a mandarin seamed edge, these produce some big zones of the fluid that separates, they cause the big pressure loss on the one hand and cause the mobile non-pulsation of having a mind on the other hand, so pressure surge is delivered to the measurement passage that branches out from entrance area through separating opening.Make the output signal distortion significantly of measuring sensor by the pressure surge meeting in the measurement passage.
Summary of the invention
According to the present invention, a kind of device that is used for determining at least one parameter of the medium that flows on main flow direction of pipeline has been proposed, be particularly useful for determining the MAF in the air intake duct of internal combustion engine, comprise a conduit component and a sensor device that is provided with bypass member that constitutes heavy connection of pipe, bypass member is arranged in the conduit component in this wise, so that a shunting of the medium that flows in conduit component arrives the input area that is formed in the channel architecture in the bypass member, wherein this input area has a separating opening, this separating opening leads in the heavy connection of pipe on two of bypass member are parallel in the sidewall that main flow direction extends at least one, wherein, in conduit component, before bypass member, be provided with a diversion component from main flow direction, this diversion component has at least one guide face in face of main flow direction, this guide face from one so crooked equably towards two sidewalls with the isolated apex lines of bypass member in both sides so that the end that deviates from this apex lines of this guide face is aimed at sidewall.
By contrast, device with at least one parameter such scheme feature, that be used for determining the medium that flows at pipeline according to the present invention has its advantage, has promptly avoided having on the sidewall of bypass member the separation flow of fluid of the separation in some big zones as much as possible.This is by realizing at an aerodynamic diversion component that is provided with previously of bypass member from main flow direction in conduit component, this diversion component has at least one guide face in face of main flow direction, this guide face is crooked so equably towards two sidewalls on both sides from an apex lines that separates with bypass member, so that the end that deviates from this apex lines of guide face is aimed at sidewall.Using diversion component to reach under the situation of big flowing velocity in conduit component, the boundary layer of flowing has become turbulent flow on the guide face of diversion component, this is favourable because in the flowing of turbulent flow near wall and the particle that flows in away from the fluidized bed of wall stronger momentum-exchange takes place.Its consequence is that flowing on the sidewall of bypass member on the guide face of diversion component and especially in the boundary layer of turbulent flow, and does not separate with it.
But under the situation of the medium and small flowing velocity of conduit component, do not take place by the transition of laminar flow to turbulent flow.The substitute is, MEDIA FLOW at first flow on the guide face of diversion component and then in the transitional region of guide face and sidewall since here the guide face by bending of existence separate to the curved transition of flat sidewall.In order under the situation of the medium and small flowing velocity of conduit component, also to avoid separation flow, therefore in a particularly advantageous embodiment of the present invention, propose, from main flow direction at least in the front of the sidewall that is provided with separating opening, but especially on two of bypass member parallel sidewalls, on guide face or be close to guide face at least and be provided with a structure that produces turbulent flow, the turbulent structure of this generations causes turbulent flow in flow boundary layer.Also can reach under the situation of the medium and small flowing velocity of conduit component by this measure: become turbulent flow in the zone of boundary layer at guide face and no longer separate then by the sidewall of bypass member.
Advantageous embodiments of the present invention and further improvement will realize by the further feature that provides in illustrating below.
For example diversion component can be provided with oval crooked guide face especially simply.In the case, the minor semi-axis of oval crooked guide face big or small selected equals half of distance of two sidewalls of bypass member.The major semi-axis of the guide face of oval bending is at least the twice of minor semi-axis.
Advantageously, the structure of this generation turbulent flow is made of uncontinuity on the guide face of even bending and/or out-of-flatness.
The structure that produces turbulent flow can constitute by line, for example tinsel that at least one is arranged on the spigot surface or next-door neighbour's guide face is provided with very simple mode.It for example can be by repeatedly alternately crooked and have a serrate profile that has a plurality of teeth.
A particularly advantageous embodiment is that the structure that wherein produces turbulent flow is made of a plurality of slots that are opened in the guide face, and these slots are disposed in a sidewall with bypass member respectively and vertically reach in the plane of extending abreast with main flow direction.Partly enter in the slot and in the transitional region of diversion component and bypass member, discharge by slot again hitting MEDIA FLOW on guide face on the main flow direction.Formed strong longitudinal turbulence in flowing thus before the sidewall of bypass member, it causes the flow boundary layer of a turbulent flow and stops the boundary layer to be separated from sidewall.Can accomplish that in addition the water that contains is received by slot and laterally derived in fluid, and can not arrive in the input area of channel architecture of bypass member.
These slots can have a rectangular cross section that has the face that is arranged on the inside between guide face and the bypass member, this inner face preferably bends to bypass member equally elliptically from one second apex lines, and wherein the end that deviates from second apex lines of Nei Bu face respectively carries out the transition to the face that an opposing sidewalls is extended obliquely.Forming longitudinal turbulence whereby when fluid is discharged in by slot reaches and has improved turbulent generation thus.
Diversion component has an open-work, and this open-work is aimed at an aperture of the input area of channel architecture, so that a shunting of the medium that flows on main flow direction in conduit component can arrive the input area of channel architecture by the open-work of diversion component.The structure that produces turbulent flow can be set at perpendicular to main flow direction and be parallel on the direction of sidewall, both on open-work also below this open-work and especially also be arranged on the sidewall that limits open-work.
For employed so far sensor device can be inserted in the conduit component as the plug-in type sensor, proposed: diversion component is made dividually as independent parts and sensor device.Diversion component especially can constitute integratedly with conduit component.When conduit component was for example made as injection molding spare with diversion component, this did not embody the increase of cost on manufacturing technology.
Another advantageous embodiments of the present invention will be arranged on that aerodynamic diversion component and rectification part of front of bypass member is combined, and this rectification part is an aperture plate especially, and it is set on the height of diversion component from main flow direction.Rectification part not only plays the effect of the mobile homogenising that makes the rectification part back, and especially also makes the mobile homogenising of rectification part front.Though disclose, front or back at survey sensor in conduit component use rectification part to make mobile homogenising, but it combines with diversion component and has produced additional advantage, and promptly rectification part can for example be made as injection molding spare with conduit component and with diversion component integratedly.
Advantageously, by rectification part, the integrated parts that diversion component and conduit component constitute are made of plastics.
Particularly advantageously be, rectification part is set at the back of the inlet of the open-work of diversion component on the main flow direction, and the open-work of diversion component is aimed at an opening of the input area of channel architecture.Can advantageously accomplish thus: the shunting that reaches in the open-work of diversion component so enter in channel architecture and the input area that this open-work is connected of bypass member of medium can not passed through rectification part.Therefore can guarantee: the shunting that enters can not be subjected to the influence that may be disturbed by the little partial fluid that rectification part causes.
Description of drawings
Embodiments of the invention are expressed and reach in the accompanying drawings and will describe in the following description.Accompanying drawing is represented:
Fig. 1: according to the cross-sectional view of first embodiment of device of the present invention,
Fig. 2: the side view of embodiment among Fig. 1,
Fig. 3: along the sectional view of Fig. 2 center line A-A,
Fig. 4: dissect the sectional view of diversion component with one with the parallel plane plane of Fig. 3,
Fig. 5: according to the side view of second embodiment of device of the present invention,
A sectional view of the device of Fig. 6: Fig. 5,
Fig. 7: a sectional view of the third embodiment of the present invention,
Fig. 8: a side view of the fourth embodiment of the present invention,
A sectional view of the device of Fig. 9: Fig. 8.
Embodiment
Fig. 1 represents a conduit component 3, and it has a roughly wall 15 of cylinder hull shape, and this wall surrounds a heavy connection of pipe 12, flows through a kind of medium in this passage on a main flow direction.This main flow direction is represented by a corresponding arrow 18 in Fig. 1 and is extended in the figure from left to right.Main flow direction is defined as such direction, promptly medium mainly begins to flow through heavy connection of pipe up to its output terminal from the input end of conduit component on this direction, even the flow separation regions that local eddy current forms and the part exists has to flow the part of main flow direction is departed from.Here the central axis of the wall 15 of the cylinder hull shape of main flow direction and conduit component 3 extends abreast.Conduit component 3 for example can be positioned in the admission line of internal combustion engine.Described medium for example relates to the air that flow in the internal combustion engine.
Sensor device 1 is arranged on the conduit component 3 in this wise, promptly extend into to the bypass member that is provided with channel architecture 6 finger-like of sensor device in the heavy connection of pipe 12 and with predetermined orientation to be arranged in the flow media.Should guarantee when bypass member 6 is packed pipeline 3 into: the main flow direction 18 of its relative medium has predetermined orientation.Sensor device 1 also comprises an electric terminal 11 and a receiving unit that is used for a load bearing component 8 that is connected with terminal 11, for example is provided with an electronics evaluation unit on this load bearing component.Sensor device can be inserted in the heavy connection of pipe 12 with one of the wall 15 insertion mouth that is surrounded by flange 31 that bypass member 6 is passed conduit component 3.Load bearing component 8 with electronics evaluation unit can be arranged on the inside and/or the outside of heavy connection of pipe 12.
Sensor device 1 has a measuring sensor 9 that is arranged on the measuring sensor bearing part 10, its measurement data available electron evaluation unit analyzing and processing.For example can determine as volumetric flow rate parameter, flow media or mass rate, especially MAF by measuring sensor 9.Also can determine other measurable parameter, for example concentration of pressure, temperature, a kind of medium composition or flowing velocity, they can be determined by the sensor element that is fit to.
Also express as Fig. 1, be provided with a diversion component 2 in conduit component 3, it is set at the tight front of bypass member 6 from main flow direction 18.Diversion component 2 is made dividually as independent parts and sensor device 1 in this embodiment, but also can be connected integratedly with it.As appreciable among Fig. 1, diversion component 2 integrally is made of plastics as the injection molding parts with conduit component 3.Diversion component has a guide face 20 in face of main flow direction 18.As by being clear that among Fig. 3, guide face 20 by one from bypass member 6 against the outstanding apex lines 25s of main flow direction in both sides towards two sidewalls 16,17 is crooked so equably, so that the end that deviates from apex lines 38 of guide face 20 is configured to and sidewall 16,17 (end 38 carries out the transition to sidewall 16,17 continuously and not with forming seamed edge) of aiming at.This for example can reach by one columniform, and this cylindrical surface is placed in the front of front end face 13.But in the preferred embodiment shown here, guide face 20 is crooked elliptically.As appreciable among Fig. 4, the minor semi-axis b of Wan Qu guide face 20 equals half of distance between two sidewalls 16,17 of bypass member elliptically.The major semi-axis a of Wan Qu guide face 20 is at least the twice of minor semi-axis b elliptically.Diversion component 2 also has an open-work 26, and it is aimed at the opening 21 of the input area 27 of channel architecture, so that the shunting of MEDIA FLOW can arrive in the input area 27 by open-work 26 and opening 21 on main flow direction 18.As shown in Figure 2, open-work 26 side direction constitute the border by some walls 30, and their lateral surface constitutes the part of crooked guide face 20.In the back of the face of carrying front end face 13 14 of bypass member 6, but at least in the back of separating opening 33, a training wall 4 parallel with sidewall 16 can be set in conduit component 3 on a side that is provided with separating opening 33 of bypass member 6.This training wall 4 does not align with this sidewall, but this sidewall dislocation ground is provided with relatively.Can avoid reliably from the separation flow of the sidewall that is provided with separating opening 33 16 of bypass member 6 by this training wall 4.
In addition, as appreciable in Fig. 1 and 2, be provided with a structure 23 that produces turbulent flow.This structure is made of a plurality of slots 23 that are opened in the guide face 20, and these slots are set at a sidewall 16,17 with bypass member 6 respectively and vertically reach in the plane of extending abreast with main flow direction 18.These slots have the xsect of rectangle, and wherein under the situation of supposition size b=6.5mm, the value of slot height can for example be about 1mm and each slot each interval 2mm.These slots can be constituted continuously until till the front end face 13 of bypass member 6.But consider in the preferred embodiment shown here: slot 23 has a face 22 that is arranged on the inside between guide face 20 and the bypass member 6, this inner face also bends to bypass member elliptically from one second apex lines 34, the end that deviates from second apex lines 34 of face 22 that wherein should inside respectively carries out the transition to a face 24 that extends obliquely with an angle [alpha] opposing sidewalls 16,17.This can the most clearly see in Fig. 4.This angle [alpha] should and be preferably 45 ° between 20 ° and 70 °.Diversion component 2 can have a hollow parts 35 relevant with processing between this inner face 22 and this front end face 13.
Impinge upon on the guide face 20 MEDIA FLOW partly along guide face 20 around to the sidewall 16,17, and also partly enter into slot 23 and here by on the inside surface 22 towards the direction deflection of the face 24 that is obliquely installed.MEDIA FLOW (face 24) relative main flow direction is therefrom left slot 23 obliquely.End at the face 24 of ramp shaped has formed strong longitudinal turbulence when MEDIA FLOW flows out, this longitudinal turbulence produces turbulent flow in the boundary layer flow on the sidewall 16,17, can not throw off to cause the boundary layer.Can avoid pressure surge thus, this pressure surge otherwise act on by separating opening 33 is measured on the passage.If but slot is configured continuous also formation turbulent flow.
Fig. 7 represents an embodiment, and wherein apex lines 25 is not to constitute linear and be not orthogonal to main flow direction 18 yet to extend, shown in embodiment among Fig. 1.The apex lines 25 that tilts to extend by relative main flow direction 18 forms a profile of giving prominence to forward in face of main flow direction 18 in open-work 26 zones.Can advantageously realize thus: be collected at water in these slots 23 and that under limiting case, be full of these slots and in Fig. 7, tilt up to derive and therefore can not arrive the input area 27 of bypass member 6 by main flow.
In Fig. 5 and 6, express another embodiment of the present invention.Except the structure that produces turbulent flow, the structure of this device is the structure of embodiment as shown in fig. 1.Both sides on the guide face 20 of diversion component 2 are for example by bonding line 37, for example tinsel installed.This diameter wiry is about 1mm.But this tinsel also can with guide face 20 non-contiguously near guide face 20 ground settings.This tinsel 37 is preferably repeatedly alternately crooked and have a serrate profile that has a plurality of teeth, but also can construct straight.The flow boundary layer that is directed on oval guide face 20 becomes turbulent flow by this tinsel, can avoid the separation flow on the sidewall 16,17 thus.
With here shown in embodiment differently, the structure that produces turbulent flow also can produce by small stair on the guide face 20 or seamed edge.Here, can consider different enforcement structures.Importantly, the structure that produces turbulent flow forms by near its noncontinuity and/or out-of-flatness (for example little step, seamed edge, rib etc.) tight on the guide face of the even bending of diversion component or at least, forms turbulent flow thus in flow boundary layer.
In Fig. 8 and Fig. 9, express another embodiment.In this embodiment in conduit component 3 on main flow direction 18, on the height of diversion component 2, be provided with a rectification part 7.This rectification part will cause the homogenising that flow, favourable in its back.The mobile quilt of this upstream, external rectification part front is homogenising at least in part.Have an open-work 26 as diversion component 2 the embodiment among Fig. 1, it is aimed at an opening 21 of the input area of channel architecture.Rectification part 7 is set at the back of inlet 60 of open-work 26 on the main flow direction 18 and the front of bypass member 6, and this can be clear that in Fig. 9.The inlet 60 of open-work 26 is arranged in a plane vertical with main flow direction 18.To advantageously reach by the back that rectification part 7 is arranged on this inlet 60: enter the obstructed overcommutation parts 7 of fluid of open-work 26 and the flow interfering that can form and also can not arrive this open-work in the rectification part back.Particularly advantageous in this embodiment is that rectification part needn't be made and also not need and assemble individually as independent parts.The ground that replaces, rectification part can be made of plastics as the injection molding parts with diversion component 2 and with conduit component integratedly integratedly, and this is advantageous particularly on cost.
As shown in Figure 8, rectification part 7 for example can comprise first aperture plate of being made up of contact pin parallel to each other 51 and second aperture plate of being made up of contact pin parallel to each other 52, and wherein first contact pin 51 is approximately perpendicular to second contact pin, 52 ground layout.Each contact pin has two and is parallel to guide face 53,54 and front end face 55 facing to main flow that main flow direction 18 is extended, as shown in Figure 9.But also can consider to use a unique aperture plate with the contact pin that is parallel to each other.
Also can make the guide face 20 of diversion component 2 be provided with a plurality of structures that produce turbulent flow in addition, as by as shown in the embodiment of Fig. 2, Fig. 5 or Fig. 6, or rectification part 7 is arranged in the conduit component 3 with the guide wall shown in Fig. 34.
Claims (20)
1. be used for determining to go up the device of at least one parameter of the medium that flows in a main flow direction of pipeline (18), comprise that one constitutes the conduit component (3) of heavy connection of pipe and the sensor device (1) that is provided with bypass member (6), bypass member (6) is arranged in the conduit component (3) in this wise, so that a shunting of the medium that flows in conduit component arrives the input area (27) that is formed in the channel architecture in the bypass member, wherein this input area (27) has a separating opening (33), this separating opening is at two sidewalls (16 that are parallel to main flow direction (18) extension of bypass member (6), 17) lead in the heavy connection of pipe at least one in, it is characterized in that: in conduit component (3) from main flow direction (18) at the preceding diversion component (2) that is provided with of bypass member (6), this diversion component has at least one guide face in face of main flow direction (18) (20), this guide face from one with the isolated apex lines of bypass member (6) (25) in both sides towards two sidewalls (16,17) crooked so equably, so that the end that deviates from this apex lines (38) of this guide face (20) is aimed at sidewall (16,17).
2. according to device claim 1, that be used for determining to go up at least one parameter of the medium that flows in a main flow direction of pipeline (18), it is characterized in that: on main flow direction (18) at least in the front of the sidewall that is provided with separating opening (28) (16), go up or be close at least the guide face (20) of this bypass member (6) at guide face (20), be provided with a structure (23 that produces turbulent flow, 37), the structure of this generation turbulent flow goes up at this sidewall (16) of this bypass member and cause turbulent flow in flow boundary layer.
3. according to device claim 1 or 2, that be used for determining to go up in a main flow direction of pipeline (18) at least one parameter of the medium that flows, it is characterized in that: guide face (20) is crooked elliptically.
4. according to device claim 3, that be used for determining to go up at least one parameter of the medium that flows in a main flow direction of pipeline (18), it is characterized in that: the minor semi-axis (b) of oval crooked guide face (20) equals half of distance of two sidewalls (16,17) of bypass member; And: the major semi-axis (a) of the guide face (20) of oval bending is at least the twice of this minor semi-axis (b).
5. according to device claim 2, that be used for determining to go up in a main flow direction of pipeline (18) at least one parameter of the medium that flows, it is characterized in that: the structure of this generation turbulent flow is by uncontinuity and/or out-of-flatness formation on the guide face (20) of even bending.
6. according to device claim 2, that be used for determining going up in a main flow direction of pipeline (18) at least one parameter of the medium that flows, it is characterized in that: the structure of this generations turbulent flow is arranged on this guide face (20) by at least one and goes up or be close to tinsel (37) formation that this guide face (20) is provided with.
7. according to device claim 6, that be used for determining going up in a main flow direction of pipeline (18) at least one parameter of the medium that flows, it is characterized in that: this tinsel (37) is by repeatedly alternately crooked and have a serrate profile that has a plurality of teeth.
8. according to device claim 2, that be used for determining to go up at least one parameter of the medium that flows in a main flow direction of pipeline (18), it is characterized in that: the structure of this generation turbulent flow is made of a plurality of slots (23) that are opened in this guide face (20), these slots are set at a sidewall (16,17) with bypass member (6) respectively and vertically reach in the plane of extending abreast with main flow direction (18).
9. device according to Claim 8, that be used for determining to go up at least one parameter of the medium that flows in a main flow direction of pipeline (18), it is characterized in that: these slots (23) have the rectangular cross section that has the face (22) that is arranged on the inside between guide face (20) and the bypass member (6), this inner face bends to bypass member equally elliptically from one second apex lines (34), the end that deviates from this second apex lines (34) of face (22) that wherein should inside respectively carries out the transition to the face (24) that relative these sidewalls (16,17) extend obliquely.
10. according to device claim 1 or 2, that be used for determining to go up at least one parameter of the medium that flows in a main flow direction of pipeline (18), it is characterized in that: diversion component (2) has an open-work (26), and this open-work is aimed at an opening (21) of the input area (27) of channel architecture.
11. according to device claim 2, that be used for determining to go up at least one parameter of the medium that flows in a main flow direction of pipeline (18), it is characterized in that: the described structure (23) that produces turbulent flow is set at perpendicular to main flow direction (18) and is parallel to sidewall (16,17) on the direction, both in the top of described open-work (26) also below this open-work.
12. according to device claim 1 or 2, that be used for determining to go up in a main flow direction of pipeline (18) at least one parameter of the medium that flows, it is characterized in that: diversion component (2) is made dividually as independent parts and sensor device.
13. according to device claim 1 or 2, that be used for determining to go up at least one parameter of the medium that flows in a main flow direction of pipeline (18), it is characterized in that: on main flow direction (18), the front that reaches bypass member (6) on the height of diversion component (2) is provided with a rectification part (7) in conduit component (3).
14. according to device claim 13, that be used for determining to go up at least one parameter of the medium that flows in a main flow direction of pipeline (18), it is characterized in that: diversion component (2) has an open-work (26), and this open-work is aimed at an opening (21) of the input area (27) of described channel architecture; And rectification part (7) is set at the back that main flow direction (18) goes up the inlet (60) of open-work (26).
15. according to device claim 13, that be used for determining to go up in a main flow direction of pipeline (18) at least one parameter of the medium that flows, it is characterized in that: rectification part (7) reaches with diversion component (2) integratedly and is connected with conduit component (3).
16. according to device claim 13, that be used for determining to go up at least one parameter of the medium that flows in a main flow direction of pipeline (18), it is characterized in that: by rectification part (7), the integrated parts that diversion component (2) and conduit component (3) constitute are made of plastics.
17. according to device claim 13, that be used for determining to go up at least one parameter of the medium that flows in a main flow direction of pipeline (18), it is characterized in that: rectification part (7) comprises first aperture plate be made up of contact pin parallel to each other (51) and second aperture plate of being made up of contact pin parallel to each other (52), and wherein these first contact pin (51) are approximately perpendicular to these second contact pin and are provided with (52).
18. according to device claim 1, that be used for determining going up in a main flow direction of pipeline (18) at least one parameter of the medium that flows, it is characterized in that: the described device that is used for determining at least one parameter of the medium that flows on main flow direction of pipeline is the device of MAF that is used for determining the air intake duct of internal combustion engine.
19. according to device claim 11, that be used for determining to go up in a main flow direction of pipeline (18) at least one parameter of the medium that flows, it is characterized in that: the described structure that produces turbulent flow is additionally provided on the sidewall (30) that limits this open-work.
20. according to device claim 12, that be used for determining to go up in a main flow direction of pipeline (18) at least one parameter of the medium that flows, it is characterized in that: described diversion component and conduit component (3) constitute integratedly.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10331751.1 | 2003-07-14 | ||
| DE10331751 | 2003-07-14 | ||
| DE10348400.0 | 2003-10-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1823262A CN1823262A (en) | 2006-08-23 |
| CN100420921C true CN100420921C (en) | 2008-09-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004800201452A Expired - Fee Related CN100420921C (en) | 2003-07-14 | 2004-07-06 | Device for determining at least one parameter of a medium flowing in a conduit |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN100420921C (en) |
| DE (1) | DE10348400A1 (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005038598A1 (en) | 2005-08-16 | 2007-02-22 | Robert Bosch Gmbh | Hot film air mass meter with flow separation element |
| JP4161077B2 (en) * | 2005-09-29 | 2008-10-08 | 三菱電機株式会社 | Flow measuring device |
| DE102006024745A1 (en) * | 2006-05-26 | 2007-12-06 | Siemens Ag | Mass flow sensor device |
| DE102006045658B4 (en) | 2006-09-27 | 2023-05-04 | Robert Bosch Gmbh | Device for measuring fluid media |
| DE102006045657A1 (en) * | 2006-09-27 | 2008-04-03 | Robert Bosch Gmbh | Plug-in sensor with optimized flow outlet |
| DE102007024865A1 (en) | 2007-05-29 | 2008-12-04 | Robert Bosch Gmbh | Device for determining at least one parameter of a fluid medium |
| JP5047079B2 (en) | 2008-07-02 | 2012-10-10 | 三菱電機株式会社 | Flow measuring device |
| DE102010030438A1 (en) * | 2010-06-23 | 2011-12-29 | Robert Bosch Gmbh | Device for detecting property e.g. velocity of air mass in motor car, has suction apparatus partly sucking flow barrier layer at fluid medium rush overable surface area, and sensor device detecting property of flowing fluid medium |
| DE102014215209A1 (en) * | 2014-08-01 | 2016-02-04 | Robert Bosch Gmbh | Sensor for determining at least one parameter of a fluid flowing through a measuring channel |
| DE102018200171B4 (en) * | 2018-01-08 | 2020-04-02 | Audi Ag | Measuring arrangement for determining a parameter of a fluid medium flowing through a fluid flow channel, and fluid flow channel with such a measuring arrangement |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4457169A (en) * | 1981-06-25 | 1984-07-03 | Robert Bosch Gmbh | Apparatus for measuring the mass of a flowing medium |
| US5485746A (en) * | 1993-08-10 | 1996-01-23 | Nippondenso Co., Ltd. | Hot-wire type airflow meter having a flow smoothing core |
| WO2001018498A1 (en) * | 1999-09-07 | 2001-03-15 | Robert Bosch Gmbh | Device for measuring at least one parameter of a medium that flows in a conduit |
| CN1372631A (en) * | 2000-02-26 | 2002-10-02 | 罗伯特·博施有限公司 | Device for measuring at least one parameter of a flowing medium |
-
2003
- 2003-10-17 DE DE10348400A patent/DE10348400A1/en not_active Withdrawn
-
2004
- 2004-07-06 CN CNB2004800201452A patent/CN100420921C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4457169A (en) * | 1981-06-25 | 1984-07-03 | Robert Bosch Gmbh | Apparatus for measuring the mass of a flowing medium |
| US5485746A (en) * | 1993-08-10 | 1996-01-23 | Nippondenso Co., Ltd. | Hot-wire type airflow meter having a flow smoothing core |
| WO2001018498A1 (en) * | 1999-09-07 | 2001-03-15 | Robert Bosch Gmbh | Device for measuring at least one parameter of a medium that flows in a conduit |
| CN1372631A (en) * | 2000-02-26 | 2002-10-02 | 罗伯特·博施有限公司 | Device for measuring at least one parameter of a flowing medium |
Also Published As
| Publication number | Publication date |
|---|---|
| DE10348400A1 (en) | 2005-02-03 |
| CN1823262A (en) | 2006-08-23 |
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