CN105588680A - Air circuit isolation device for built-in atmosphere pressure sensor of diesel engine controller - Google Patents
Air circuit isolation device for built-in atmosphere pressure sensor of diesel engine controller Download PDFInfo
- Publication number
- CN105588680A CN105588680A CN201510936762.7A CN201510936762A CN105588680A CN 105588680 A CN105588680 A CN 105588680A CN 201510936762 A CN201510936762 A CN 201510936762A CN 105588680 A CN105588680 A CN 105588680A
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- Prior art keywords
- pressure sensor
- atmosphere pressure
- box body
- diesel engine
- built
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/0007—Fluidic connecting means
- G01L19/0038—Fluidic connecting means being part of the housing
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The invention provides an air circuit isolation device for a built-in atmosphere pressure sensor of a diesel engine controller. The device comprises a box body, a box cover, a plug, an air tap, a rubber sac, an atmosphere pressure sensor and an electrically conductive rubber ring. The box body and the box cover are hermetically and fixedly connected together via the electrically conductive rubber ring to form a closed cavity. The sidewall of the box body is fixedly provided with a first threaded hole and a second threaded hole, wherein the first threaded hole is hermetically matched with the plug and the second threaded hole is hermetically matched with the air tap. Inside the air tap, a pinhole is arranged to pass through the internal and external two ends of the air tap. The inner end of the air tap extends into the cavity inside the box body via the second threaded hole to be in sealed and fixed communication with one end of the rubber sac. The outer end of the air tap is positioned outside the box body. The upper part of the atmosphere pressure sensor is provided with a ventilation pipe. The ventilation pipe is in sealed and fixed communication with the other end of the rubber sac. According to the technical scheme of the invention, the atmospheric air is led into the atmosphere pressure sensor inside the box body via the rubber sac, so that the original sealing performance of the controller is ensured. Furthermore, the reliability and the maintainability of the controller are ensured.
Description
Technical field
The invention belongs to Diesel Engine Control technical field, especially relate in a kind of diesel engine controller built-inAtmosphere pressure sensor gas circuit spacer assembly.
Background technology
Modern diesel engines is controlled by ECU, no matter on plateau, Plain, coastal or salt fog is moistRegion, the vehicle that diesel engine is housed all may arrive at. In order to realize the accurate control of diesel engine, simultaneously realThe compactedness of existing diesel engine, majority is placed in ECU inside for the atmosphere pressure sensor that gathers height above sea level.Because atmosphere pressure sensor will be monitored atmospheric pressure, therefore atmosphere pressure sensor should communicate with atmosphere, existingTechnology all adopts opens pore on controller housing, and filter net device is housed on passage, this technology toolHave certain dash, anti-salt fog function, but, for further prevent wiring board in controller andComponents and parts are subject to the erosion of salt fog and moisture, and the wiring board that is welded with element will carry out the anti-place of entirety three conventionallyReason, loses substantially through three anti-the repair of circuit slabs after treatment; In addition, owing to will filling filter net device, logicalPore yardstick is relatively large, and due to technological reason, filter net device is non-metallic material normally, passage placeElectromagnetic leakage is comparatively serious, and metal shell can decline to a great extent to inner electromagnetic isolation performance, to controllerElectro Magnetic Compatibility is quite unfavorable.
The present invention is directed to the problems referred to above, adopt pipeline to introduce mode, atmosphere pressure sensor is communicated with atmosphere,The sealing that can ensure controller housing internal cavities simultaneously, realizes wiring board and components and parts in controllerIsolation with atmosphere. The fine contradiction having solved between atmospheric pressure collection and controller sealing.
Summary of the invention
In view of this, the present invention is intended to propose built-in atmosphere pressure sensor gas circuit in a kind of diesel engine controllerSpacer assembly, in order under strong salt fog and wet environment, realizes the normal collection of atmospheric pressure in ECU box,Ensure the due mechanical electromagnetic dual-seal of controller performance simultaneously, prevent the rust of circuit board component in boxErosion, inefficacy.
For achieving the above object, technical scheme of the present invention is achieved in that
Built-in atmosphere pressure sensor gas circuit spacer assembly in a kind of diesel engine controller, comprise box body, lid,Screw plug, valve, sebific duct, atmosphere pressure sensor and conductive rubber ring;
Described box body is sealedly and fixedly connected into an airtight cavity with lid by described conductive rubber ring, shouldOn the sidewall of box body, be installed with the first screwed hole and the second screwed hole that run through this sidewall, described the first screw threadHole is fabrication hole, and this first screwed hole and described screw plug are sealed and matched, described the second screwed hole and described gasMouth is sealed and matched;
In described valve, be provided with the pin hole that runs through the inside and outside two ends of this valve, the inner of this valve is by described secondScrewed hole stretches in the cavity in described box body, and is fixedly communicated with outer end with one end sealing of described sebific ductBe positioned at the outside of described box body;
Described atmosphere pressure sensor is fixed in described box body, and the top of this atmosphere pressure sensor is provided with ventilationPipe, described breather pipe is fixedly communicated with the other end sealing of described sebific duct.
Further, in diesel engine controller, built-in atmosphere pressure sensor gas circuit spacer assembly also comprises circuitPlate, described atmosphere pressure sensor is IC chip, the bottom of this atmosphere pressure sensor is described integratedThe pin of circuit chip, described atmosphere pressure sensor is welded on described wiring board by pin, described logicalTracheae is positioned at the top of described IC chip, in this IC chip, be positioned at described breather pipe underSide is provided with pressure sensitive film.
Further, described breather pipe and described IC chip are one-body molded.
Further, described box body and lid are made up of aluminum alloy materials.
Further, described valve comprises that six sides and the lateral surface that are fixedly connected with are provided with externally threaded connectionPart, the both sides of described six sides and connector are provided with respectively the cylindric extension that is fixedly connected with and tapered successivelyConnector, is positioned at cylindric extension and tapered connector and the sealing of described sebific duct of described connector one sideBe communicated with.
Further, between described six sides and connector, be installed with escape.
With respect to prior art, built-in atmosphere pressure sensor gas circuit in diesel engine controller of the present inventionSpacer assembly has following advantage:
(1) built-in atmosphere pressure sensor gas circuit spacer assembly in diesel engine controller of the present invention,By sebific duct, atmosphere is introduced to atmosphere pressure sensor in box, the due compactedness of the system that not only realized, alsoEnsure well the original sealing property of controller, wiring board and components and parts are also without entirety three anti-places simultaneouslyReason, thus reliability and the maintainability of controller ensured.
Brief description of the drawings
The accompanying drawing that forms a part of the present invention is used to provide a further understanding of the present invention, of the present inventionSchematic description and description is used for explaining the present invention, does not form inappropriate limitation of the present invention. ?In accompanying drawing:
Fig. 1 is built-in atmosphere pressure sensor gas circuit isolation in the diesel engine controller described in the embodiment of the present inventionApparatus structure schematic diagram;
Fig. 2 is the gas nozzle structure schematic diagram described in the embodiment of the present invention;
Fig. 3 is the atmosphere pressure sensor structural representation described in the embodiment of the present invention.
Description of reference numerals:
1-box body; 2-lid; 3-screw plug; 4-valve; 5-sebific duct; 6-atmosphere pressure sensor; 7-conductionRubber ring; 8-wiring board; The tapered connector of 9-; The cylindric extension of 10-; 11-connector; 12-sixSide; 13-pin hole; 14-breather pipe; 15-pin.
Detailed description of the invention
It should be noted that, in the situation that not conflicting, the spy in embodiment and embodiment in the present inventionLevy and can mutually combine.
In description of the invention, it will be appreciated that, term " " center ", " longitudinally ", " laterally "," on ", D score, 'fornt', 'back', " left side ", " right side ", " vertically ", " level ",Orientation or the position relationship of the instruction such as " top ", " end ", " interior ", " outward " are based on shown in accompanying drawingOrientation or position relationship, be only the present invention for convenience of description and simplified characterization, instead of instruction or darkThe device or the element that show indication must have specific orientation, construct and operation with specific orientation, thereforeCan not be interpreted as limitation of the present invention. In addition, term " first ", " second " etc. are only for describingObject, and can not be interpreted as instruction or hint relative importance or implicit indicate indicated technical charactericticQuantity. Thus, the feature that is limited with " first ", " second " etc. can be expressed or impliedly wrapDraw together one or more these features. In description of the invention, except as otherwise noted, " multiples' "Implication is two or more.
In description of the invention, it should be noted that, unless otherwise clearly defined and limited, term" installation ", " being connected ", " connection " should be interpreted broadly, and for example, can be to be fixedly connected with, alsoCan be to removably connect, or connect integratedly; Can be mechanical connection, can be also electrical connection; CanTo be to be directly connected, also can indirectly be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, can understand above-mentioned term in the present invention by concrete conditionIn concrete meaning.
Describe below with reference to the accompanying drawings and in conjunction with the embodiments the present invention in detail.
As shown in Figures 1 to 3, the present invention includes box body 1, lid 2, screw plug 3, valve 4, sebific duct 5,Atmosphere pressure sensor 6 and conductive rubber ring 7;
Box body 1 is sealedly and fixedly connected into an airtight cavity, this box with lid 2 by conductive rubber ring 7On the sidewall of body 1, be installed with the first screwed hole and the second screwed hole that run through this sidewall, the first screwed hole isFabrication hole, this first screwed hole and screw plug 3 are sealed and matched, and form for 2 sealings of box body 1 and lidThe hermetic seal inspection of controller housing, the second screwed hole and valve 4 are sealed and matched;
In valve 4, be provided with the pin hole 13 that runs through these valve 4 inside and outside two ends, the inner of this valve 4 is by secondScrewed hole stretches in the cavity in box body 1, and is fixedly communicated with one end sealing of sebific duct 5, and outer end is positioned atThe outside of box body 1, makes the cavity in sebific duct 5 be in communication with the outside by the pin hole 13 in valve 4;
Atmosphere pressure sensor 6 is fixed in box body 1, and the top of this atmosphere pressure sensor 6 is provided with breather pipe14, breather pipe 14 is fixedly communicated with the other end sealing of sebific duct 5, makes valve 4 on box body 1 sidewallCavity in interior pin hole 13 and box body 1 in sebific duct 5 and the cavity in breather pipe 14 form with extraneousThe venting channels being communicated with, and in box body 1 cavity outside sebific duct 5 and breather pipe 14 for not being in communication with the outsideAnd airtight cavity, ensureing controller housing internal cavity sealing, realizes wiring board 8 in controllerWith components and parts and isolated from atmosphere time, atmosphere pressure sensor is communicated with atmosphere.
In diesel engine controller, built-in atmosphere pressure sensor gas circuit spacer assembly also comprises wiring board 8, atmospherePressure sensor 6 is IC chip, and what the bottom of this atmosphere pressure sensor 6 was IC chip drawsPin 15, atmosphere pressure sensor 6 is welded on wiring board 8 by pin 15, and breather pipe 14 is positioned at integratedThe top of circuit chip, the below that is positioned at breather pipe 14 in this IC chip is provided with pressure sensitive film,Make the pressure sensitive film in IC chip can direct feel atmospheric pressure.
Breather pipe 14 is one-body molded with IC chip, ensure breather pipe 14 and IC chip itBetween sealing.
Box body 1 and lid 2 are made up of aluminum alloy materials.
Valve 4 comprises that six sides 12 and the lateral surface that are fixedly connected with are provided with externally threaded connector 11, six sides12 are provided with respectively with the both sides of connector 11 the cylindric extension 10 and the tapered connection that are fixedly connected with successively9, the cylindric extension 10 and the tapered connector 9 that are positioned at connector 11 1 sides seal with sebific duct 5Be communicated with, the cylindric extension 10 and the tapered connector 9 that are positioned at six side's 12 1 sides are communicated with ambient atmosphere.
Between six sides 12 and connector 11, be installed with escape, fix by external screw thread at connector 11After in the second screwed hole of box body 1 sidewall, six sides 12 are close together with box body 11 sidewalls, avoidScrew thread process less than six root portions, cause six sides 12 and box body 1 sidewall contact bad, make to connectPart 11 is easily to the loosening problem of inner rotary.
The course of work of the present invention is: diesel engine is worked in certain atmospheric environment, ambient atmosphere airBe communicated with breather pipe 14 through sebific duct 5 by the pin hole 13 in valve 4, breather pipe 14 bottoms are atmospheric pressureThe pressure sensitive film of sensor 6, arrives therefore be positioned at atmosphere pressure sensor 6 direct feels of controller housingAmbient atmosphere pressure, and in controller housing the cavity of sebific duct 5 and breather pipe 14 outsides in not withThe sealing state that ambient atmosphere is communicated with, has avoided corrosion and the inefficacy of the interior wiring board 8 of this cavity and components and parts,And then avoided the anti-guarantee of entirety three to wiring board 8, ensure reliability and the maintainability of wiring board 8.
In the time that diesel engine is worked in test equipment, be positioned at cylindric extension 10 Hes of six side's 12 1 sidesTapered connector 9 is communicated with the output port of adjustments of gas pressure device in experimental facilities, makes controllerThe air pressure that middle atmosphere pressure sensor 6 contacts is adjustable, completes controller to the adaptive experiment of atmospheric pressure.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all at thisWithin the spirit and principle of invention, any amendment of doing, be equal to replacement, improvement etc., all should be included inWithin protection scope of the present invention.
Claims (6)
1. a built-in atmosphere pressure sensor gas circuit spacer assembly in diesel engine controller, is characterized in that:Comprise box body, lid, screw plug, valve, sebific duct, atmosphere pressure sensor and conductive rubber ring;
Described box body is sealedly and fixedly connected into an airtight cavity with lid by described conductive rubber ring, shouldOn the sidewall of box body, be installed with the first screwed hole and the second screwed hole that run through this sidewall, described the first screw threadHole is fabrication hole, and this first screwed hole and described screw plug are sealed and matched, described the second screwed hole and described gasMouth is sealed and matched;
In described valve, be provided with the pin hole that runs through the inside and outside two ends of this valve, the inner of this valve is by described secondScrewed hole stretches in the cavity in described box body, and is fixedly communicated with outer end with one end sealing of described sebific ductBe positioned at the outside of described box body;
Described atmosphere pressure sensor is fixed in described box body, and the top of this atmosphere pressure sensor is provided with ventilationPipe, described breather pipe is fixedly communicated with the other end sealing of described sebific duct.
2. built-in atmosphere pressure sensor gas circuit isolation in diesel engine controller according to claim 1Device, is characterized in that: also comprise wiring board, described atmosphere pressure sensor is IC chip, shouldThe bottom of atmosphere pressure sensor is the pin of described IC chip, and described atmosphere pressure sensor is by drawingPin is welded on described wiring board, and described breather pipe is positioned at the top of described IC chip, and this is integratedThe below that is positioned at described breather pipe in circuit chip is provided with pressure sensitive film.
3. built-in atmosphere pressure sensor gas circuit isolation in diesel engine controller according to claim 1Device, is characterized in that: described breather pipe and described IC chip are one-body molded.
4. built-in atmosphere pressure sensor gas circuit isolation in diesel engine controller according to claim 1Device, is characterized in that: described box body and lid are made up of aluminum alloy materials.
5. built-in atmosphere pressure sensor gas circuit isolation in diesel engine controller according to claim 1Device, is characterized in that: described valve comprises that six sides and the lateral surface that are fixedly connected with are provided with externally threaded companyFitting, the both sides of described six sides and connector are provided with respectively the cylindric extension and the cone that are fixedly connected with successivelyType connector, is positioned at the cylindric extension of described connector one side and tapered connector and described sebific duct closeEnvelope is communicated with.
6. built-in atmosphere pressure sensor gas circuit isolation in diesel engine controller according to claim 5Device, is characterized in that: between described six sides and connector, be installed with escape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510936762.7A CN105588680A (en) | 2015-12-14 | 2015-12-14 | Air circuit isolation device for built-in atmosphere pressure sensor of diesel engine controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510936762.7A CN105588680A (en) | 2015-12-14 | 2015-12-14 | Air circuit isolation device for built-in atmosphere pressure sensor of diesel engine controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105588680A true CN105588680A (en) | 2016-05-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510936762.7A Pending CN105588680A (en) | 2015-12-14 | 2015-12-14 | Air circuit isolation device for built-in atmosphere pressure sensor of diesel engine controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105588680A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107734902A (en) * | 2017-09-30 | 2018-02-23 | 中国北方发动机研究所(天津) | A kind of controller atmospheric pressure bascule |
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| GB2307750B (en) * | 1995-12-01 | 1999-02-10 | Siemens Ag | Control device |
| CN1223720A (en) * | 1996-06-28 | 1999-07-21 | 西门子公司 | Pressure sensor for mounting on the components side of a printed circuit board |
| CN1241257A (en) * | 1997-01-29 | 2000-01-12 | 西门子公司 | Pressure sensor component with tubing connection |
| CN101373158A (en) * | 2007-08-24 | 2009-02-25 | 松下电工株式会社 | Fluid pressure sensor package |
| CN101483982A (en) * | 2008-03-24 | 2009-07-15 | 中国兵器工业集团第七○研究所 | Three-body frame type controller |
| CN101676156A (en) * | 2008-09-18 | 2010-03-24 | 陈仲明 | Electronic rear axle brake valve |
| CN102439408A (en) * | 2009-05-25 | 2012-05-02 | 罗伯特·博世有限公司 | Control device having a pressure sensor |
| CN202603103U (en) * | 2012-03-31 | 2012-12-12 | 北京经纬恒润科技有限公司 | An automobile controller housing |
| CN203595578U (en) * | 2013-12-19 | 2014-05-14 | 山东省科学院海洋仪器仪表研究所 | Air ventilation and wind prevention apparatus of air pressure sensor used for marine environment monitoring buoy |
| US20150338299A1 (en) * | 2014-05-23 | 2015-11-26 | Continental Teves Ag & Co. Ohg | Control device for a vehicle with a housing having a pressure sensor |
-
2015
- 2015-12-14 CN CN201510936762.7A patent/CN105588680A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2307750B (en) * | 1995-12-01 | 1999-02-10 | Siemens Ag | Control device |
| CN1223720A (en) * | 1996-06-28 | 1999-07-21 | 西门子公司 | Pressure sensor for mounting on the components side of a printed circuit board |
| CN1241257A (en) * | 1997-01-29 | 2000-01-12 | 西门子公司 | Pressure sensor component with tubing connection |
| CN101373158A (en) * | 2007-08-24 | 2009-02-25 | 松下电工株式会社 | Fluid pressure sensor package |
| CN101483982A (en) * | 2008-03-24 | 2009-07-15 | 中国兵器工业集团第七○研究所 | Three-body frame type controller |
| CN101676156A (en) * | 2008-09-18 | 2010-03-24 | 陈仲明 | Electronic rear axle brake valve |
| CN102439408A (en) * | 2009-05-25 | 2012-05-02 | 罗伯特·博世有限公司 | Control device having a pressure sensor |
| CN202603103U (en) * | 2012-03-31 | 2012-12-12 | 北京经纬恒润科技有限公司 | An automobile controller housing |
| CN203595578U (en) * | 2013-12-19 | 2014-05-14 | 山东省科学院海洋仪器仪表研究所 | Air ventilation and wind prevention apparatus of air pressure sensor used for marine environment monitoring buoy |
| US20150338299A1 (en) * | 2014-05-23 | 2015-11-26 | Continental Teves Ag & Co. Ohg | Control device for a vehicle with a housing having a pressure sensor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107734902A (en) * | 2017-09-30 | 2018-02-23 | 中国北方发动机研究所(天津) | A kind of controller atmospheric pressure bascule |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160518 |
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| RJ01 | Rejection of invention patent application after publication |