CN207278376U - A kind of device disconnected using electrical signal detection crankcase bleed pipe - Google Patents
A kind of device disconnected using electrical signal detection crankcase bleed pipe Download PDFInfo
- Publication number
- CN207278376U CN207278376U CN201721208264.1U CN201721208264U CN207278376U CN 207278376 U CN207278376 U CN 207278376U CN 201721208264 U CN201721208264 U CN 201721208264U CN 207278376 U CN207278376 U CN 207278376U
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- microswitch
- circuit board
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- conducting wire
- ring
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- 238000001514 detection method Methods 0.000 title claims abstract description 30
- 238000009423 ventilation Methods 0.000 claims abstract description 17
- 239000002184 metal Substances 0.000 claims description 22
- 230000005611 electricity Effects 0.000 claims description 2
- 238000001125 extrusion Methods 0.000 claims description 2
- 238000004804 winding Methods 0.000 claims description 2
- 238000005253 cladding Methods 0.000 claims 1
- 238000003745 diagnosis Methods 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 9
- 239000007789 gas Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000007812 deficiency Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000013040 rubber vulcanization Methods 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
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- Details Of Connecting Devices For Male And Female Coupling (AREA)
Abstract
The utility model discloses a kind of device disconnected using electrical signal detection crankcase bleed pipe, is made of electrical conduit (1), ready-packaged joint (4,5), the circuit board assembly (2,3) of the integrated microswitch of band and electric connector (6)；Wherein, the ready-packaged joint (4,5) is separately fixed at the both ends of electrical conduit (1), the band integrates the circuit board assembly (2) of microswitch and electric connector (6) is fixedly mounted on ready-packaged joint (4), and the ready-packaged joint (5) is equipped with the circuit board assembly (3) of the integrated microswitch of band.The utility model provides one kind integrated galvanic circle on conventional crankshafts case ventilation duct and realizes that pipeline disconnects fault detect, simple in structure, easy to implement, and in cost of parts, calibration cost, diagnosis robustness aspect has obvious advantage.
Description
Technical field
It the utility model is related to a kind of device disconnected using electrical signal detection crankcase bleed pipe.
Background technology
Crankcase ventilation includes gravity-flow ventilation and forced ventilation.Petrol engine is frequently with forced action type crankcase ventilation, again
Claim PCV systems.National Abgasgesetz regulation：Crankcase gas blowby can not be discharged into air, in order to avoid cause atmosphere pollution.Therefore, as
PCV system, it is necessary to which, using ventilation duct, the gas after oil and gas separating system is separated, imports engine charge system
Unite and participate in burning, this passage is exactly crankcase bleed pipe.During ordinary maintenance, service worker is often removing ventilation
Guan Hou, forgets to reset, causes exhaust gas to be discharged into air.
Six regulation OBD of light-duty vehicle state is defined as crankcase ventilation system (PCV) J4.9.1 sections：If vehicle uses
Pcv system, manufacturing enterprise's reply Pcv system are monitored, it is ensured that the integrality of system.It is and bright in J.4.9.2.1 saving
Really regulation：For the pipeline being aerated to engine different zones, a part for Pcv system is fallen within, should be according to
J.4.9.2.2 the regulation in saving carries out fault diagnosis.J.4.9.2.2 provide：Remove some can immune situation, if bent axle
Disconnected between case and Pcv valve, or Pcv valve and inlet manifold, in-circuit diagnostic system (OBD), which should detect, to be out of order.This
The faulty indicator of failure requirements is lighted, and the storage of faulty code.Therefore, any deagnostic structure must pass through automobile engine
Control unit.
In the prior art, there is the disconnection that a variety of methods can be used for detecting crankcase bleed pipe, such as using installed in song
The ratio that pressure sensor on crankcase ventilation pipe measures it is expected lower vacuum, refers in combination with the situation of atmospheric pressure
Show the leakage or disconnection of crankcase bleed pipe.
However, existing detection method has following three shortcoming：
(1) relative pressure sensor, or two absolute pressure transducers are needed, it is necessary to the pressure limit of identification
For：5kpa-10kpa, it is desirable to which pressure sensor used has quite high precision and resolution ratio, and pressure sensor self-technique
Content is high, and it is nobler to belong to price in automobile sensor；Therefore, it is of high cost.
(2) functional development based on pressure model and calibration cost are high.Different engines, different installation sites, no
Same operating point can all have different pressure limits and threshold values to judge the integrality of Pcv system, this can bring substantial amounts of calibration
Work.
(3) the robustness deficiency of detection.Too small pressure discrimination and excessively complicated engine operating condition certainly will be brought necessarily
Misjudgment.
In addition, in 103852100 B of Chinese invention patent specification CN, disclose a kind of by humidity sensor
Crankcase bleed pipe disconnection detection method, the deficiency of this detection method are：(1) humidity sensor is needed, adds inspection
The cost of examining system.(2) functional development based on Humidity Model and calibration cost are high.(3) the robustness deficiency of detection.
The content of the invention
The utility model is in view of the deficiencies of the prior art, there is provided one kind is disconnected using electrical signal detection crankcase bleed pipe
Device, the program implement cost than pressure transducer arrangement or the cost reduction 50% of humidity sensor scheme, have at the same time
There is higher robustness, and any staking-out work is not required.
A kind of device disconnected using electrical signal detection crankcase bleed pipe of the utility model, by electrical conduit 1, fast-assembling
The circuit board assembly (2,3) and electric connector 6 of the integrated microswitch of connector (4,5), band form；Wherein, the ready-packaged joint
(4,5) are separately fixed at the both ends of electrical conduit 1, and the band integrates the circuit board assembly 2 of microswitch and electric connector 6 is consolidated
On ready-packaged joint 4, the ready-packaged joint 5 is equipped with the circuit board assembly 3 of the integrated microswitch of band for Dingan County.
The band, which integrates, includes microswitch 21, circuit board 22, divider resistance 23 on the circuit board assembly 2 of microswitch,
Microswitch 21 and divider resistance 23 are installed on circuit board 22.
The band, which integrates, includes microswitch 31 and circuit board 32 on the circuit board assembly 3 of microswitch, the fine motion is opened
Close 31 installations over the circuit board 32.
The electrical conduit 1 is made of internal lining pipe 10, internal layer 11, conducting wire (12,13) and clad 14, conducting wire (12,13)
Parallel arrangement, is arranged in the outside of internal layer 11 in a manner of spiral winding, then with one layer of clad being wrapped on the outside of conducting wire 14
To fix and protect conducting wire, above-mentioned conducting wire (12,13) is in the middle part in ventilation tube wall section, and conducting wire (12,13) is isometric, mutual
Insulation, uniformly arrangement, the conducting wire for having certain drift respectively in the both sides of ventilation duct stretches out, easy to the terminals with circuit board
Son is electrically connected；The clad 14, forms the outer surface of whole electrical conduit by way of extrusion or pyrocondensation.
The electric connector 6 includes shell 61 and metal terminal (62,63).
One end of the metal terminal 62 of the electric connector 6, through divider resistance 23, is electrically connected with 21 one end of microswitch,
The other end of microswitch 21 is electrically connected with the conducting wire 13 of electrical conduit；One end of metal terminal 63 and the conducting wire of electrical conduit
12 are electrically connected；The other end of conducting wire 13 of electrical conduit 1 is electrically connected with 31 one end of microswitch；The other end of microswitch 31
It is electrically connected with conducting wire 12；When ready-packaged joint (4,5) plugs the male end connector at both ends respectively, and electric connector 6 plugs engine control
During the male end connector of system processed, the other end of the galvanic circle of controller, wherein plug metal terminal (62,63) is formed, is accessed
The AD mouths of control unit of engine (ECU), one of metal terminal are connected to ECU power supplys by pull-up resistor, another metal
Terminal accesses the ground of ECU.
The ready-packaged joint (4,5), on the basis of conventional ready-packaged joint, the assembling also comprising circuit board and microswitch
Space, the space are in quadrangle.
The ready-packaged joint 4 also includes "O"-ring (41,42), the space between "O"-ring (41) and "O"-ring (42)
Center has on the inside of the siphunculus road of hole, and the hole is presented axially between "O"-ring (41) and "O"-ring (42).
The ready-packaged joint 5 also includes "O"-ring (51,52), the space between "O"-ring (51) and "O"-ring (52)
Center has on the inside of the siphunculus road of hole, and the hole is presented axially between "O"-ring (51) and "O"-ring (52).
The circuit board assembly (2,3) of the integrated microswitch, is a kind of FR4 plates.
The internal structure of the microswitch (21,31) is usually contact and spring structure.
The resistance value and ECU pull-up resistor resistance values of the divider resistance (23) are equal or close.
The divider resistance can also be installed on the circuit board assembly 3 of integrated microswitch.
The method disconnected using claim 1 described device detection crankcase bleed pipe, it is characterised in that when crankcase leads to
Air hose disconnects in itself with any one of crankcase or inlet manifold connector or pipeline, or the metal terminal pair of electric connector
During ECU power supply short circuits；When crankcase bleed pipe is intact, and connects crankcase and inlet manifold；When the metal end of electric connector
When son is to the ground short circuit of ECU, control unit of engine can show corresponding state.
Brief description of the drawings
Fig. 1:The present invention disconnects the schematic diagram of the embodiment of device using electrical signal detection crankcase bleed pipe
Fig. 2:The present invention disconnects the perspective view of the embodiment of device using electrical signal detection crankcase bleed pipe
Fig. 3:The enlarged drawing of electrical conduit 1
Fig. 4:The perspective view of the circuit board assembly 2 and 3 of integrated microswitch
Fig. 5:Two kinds of structure charts of microswitch
Fig. 6:Direction shown in Fig. 1 arrows disconnects the signal of the embodiment of device using electrical signal detection crankcase bleed pipe
Figure
Fig. 7:The circuit diagram of the embodiment of device is disconnected using electrical signal detection crankcase bleed pipe
Fig. 8:Microswitch, electric connector, the assembly method schematic diagram of electrical conduit
Embodiment
The embodiment of the device disconnected below in conjunction with the accompanying drawings to the present invention using electrical signal detection crankcase bleed pipe is made detailed
Describe in detail bright.
The first embodiment for the device that the present invention is disconnected using electrical signal detection crankcase bleed pipe is as shown in Figure 1 to Figure 4
Shown, the device is by electrical conduit 1, ready-packaged joint (4,5), circuit board assembly (2,3), the electric connector 6 for integrating microswitch
Composition；Wherein, ready-packaged joint (4,5) is separately fixed at the both ends of electrical conduit 1, the circuit board assembly 2 of the integrated microswitch of band
It is fixedly mounted on electric connector 6 on ready-packaged joint 4, the circuit board assembly 3 of the integrated microswitch of band is fixedly mounted on fast attaching
On first 5.
Include microswitch 21, circuit board 22, divider resistance 23, fine motion on the circuit board assembly 2 of the integrated microswitch of band
Switch 21 and divider resistance 23 are installed on circuit board 22, wherein, resistance value and the ECU pull-up resistor resistance value phases of divider resistance 23
Deng or it is close.
Include microswitch 31 and circuit board 32, the microswitch 31 on the circuit board assembly 3 of the integrated microswitch of band
Installation is over the circuit board 32.
The electrical conduit 1 is made of internal lining pipe 10, internal layer 11, conducting wire (12,13) and clad 14, wherein 11 He of internal layer
Clad 14 is insulating materials, and conducting wire (12,13) isometric, mutually insulated, uniformly arrangement, wind, outside in 11 external spiral of internal layer
Layer covering clad 14,14 material of clad is rubber or heat-shrink tube, and the whole of internal layer 11 is carried out while rubber vulcanization process
Shape, according to application demand, conducting wire (12,13) leaves one section of drift at the both ends of internal layer 11 respectively, for integrating fine motion
The electrical connection of the circuit board (2,3) of switch.
Ready-packaged joint 4 devises a circuit board and microswitch on the basis of conventional SAE J2044 ready-packaged joints
Assembly space, space are in quadrangle, there is provided the fixed and positioned space of circuit board, surrounding have part headspace, micro- in completion
After the connection of dynamic switch and conducting wire, fill glue to headspace and place cover board, the ready-packaged joint 4 also includes "O"-ring
(41,42), the space center between "O"-ring (41) and "O"-ring (42) have on the inside of the siphunculus road of hole, are visited for switch contact
Enter, the hole is presented axially between "O"-ring (41) and "O"-ring (42), ensure switch itself working environment not with
Crank case gases contact.
Ready-packaged joint 5 devises a circuit board and microswitch on the basis of conventional SAE J2044 ready-packaged joints
Assembly space, space are in quadrangle, there is provided the fixed and positioned space of circuit board, surrounding have part headspace, micro- in completion
After the connection of dynamic switch and conducting wire, fill glue to headspace and place cover board, the ready-packaged joint 5 also includes "O"-ring
(51,52), the space center between "O"-ring (51) and "O"-ring (52) have on the inside of the siphunculus road of hole, are visited for switch contact
Enter, the hole is presented axially between "O"-ring (51) and "O"-ring (52), ensure switch itself working environment not with
Crank case gases contact.
Fig. 4 is the perspective view of circuit board assembly (2,3) structure diagram of integrated microswitch, integrates the electricity of microswitch
Road plate assembly (2,3), is a kind of FR4 plates, and by microswitch, spring connecting terminal is welded on circuit board (22,32), by partial pressure
Resistance 23 welds on the circuit board 2, and provides corresponding electrical connection, realizes that circuit is connected after male end connector (7,8) is inserted into,
The function that circuit disconnects after extraction, the type of the microswitch drive rod is as shown in figure 5, can be perpendicular to switch body side
To cylindricality drive rod, fan-shaped drive rod, ball swing rod etc..
Fig. 6 is showing for the embodiment that direction shown in Fig. 1 arrows disconnects device using electrical signal detection crankcase bleed pipe
It is intended to, it can be seen that electric connector 6 includes shell 61 and metal terminal (62,63).
Fig. 7 is the circuit diagram for the embodiment that device is disconnected using electrical signal detection crankcase bleed pipe, electric connector 6
One end of metal terminal 62, through divider resistance 23, is electrically connected with 21 one end of microswitch, the other end and the conduction of microswitch 21
The conducting wire 13 of pipeline is electrically connected；One end of metal terminal 63 is electrically connected with the conducting wire 12 of electrical conduit；Other the one of electrical conduit 1
The conducting wire 13 at end is electrically connected with 31 one end of microswitch；The other end of microswitch 31 is electrically connected with conducting wire 12；Work as ready-packaged joint
(4,5) plug the male end connector at both ends respectively, and when electric connector 6 plugs the male end connector of engine control system, form control
The other end of the galvanic circle of device processed, wherein plug metal terminal (62,63), the AD of access control unit of engine (ECU)
Mouthful, one of metal terminal is connected to ECU power supplys by pull-up resistor, another metal terminal accesses the ground of ECU.
The present invention, the device disconnected using electrical signal detection crankcase bleed pipe, its assembly method are as follows：
The first step：The pagoda end of ready-packaged joint (4,5) is loaded into electrical conduit.
Second step：Microswitch (21,31), spring connecting terminal, are welded on naked by soldered circuit board assembly (2,3) respectively
On plate, divider resistance 23 is welded on circuit board assembly 2, and circuit board is divided into two kinds of electric connector side and non-plug side：Plug side
There is divider resistance 23, spring connecting terminal is four groups, and non-plug side does not have divider resistance, and spring connecting terminal is two groups.
3rd step：Connecting wire, two conducting wires (12,13) of electric connector side electrical conduit, and the two of electric connector 6
Root conducting wire, the wire connection terminal successively with circuit board after peeling connects, as shown in fig. 7, being formed eventually through circuit board wiring
The series relationship of microswitch 21, divider resistance 23 and electric connector 6；The two of non-electrical plug side electrical conduit are with conducting wire
(12,13) are connected with wire connection terminal successively after peeling, and eventually through circuit board wiring, two respectively with microswitch 31 connect
Line end is connected, and forms series relationship.
4th step：The circuit board assembly (2,3) of integrated microswitch is loaded into ready-packaged joint (4,5), it is ensured that microswitch
Contact extends inwardly into channel interior, then dispensing, lid cover board.
The method disconnected using electrical signal detection crankcase bleed pipe, is characterized as：The electrical continuity of pipeline portions is by band
The electrical conduit 1 of spiral coil realizes that electrical wire is the part of pipeline, and the disconnection of pipeline portions can naturally be led
The disconnection of conducting wire is caused, so as to change the conducting continuity of whole circuit；The electrical continuity of ready-packaged joint (4,5) is by microswitch
(21,31) male end connector (7,8) is coordinated to realize that male end connector (7,8) is to be fixed on hair by bolt or direct Shooting Technique
On motivation crankcase and inlet manifold, after the completion of pipeline is with crankcase and inlet manifold connection, in ready-packaged joint
Microswitch contact compressed by male end connector (7,8), switch is in the conduction state, the conducting of whole circuit；When ready-packaged joint (4,
5) to after with relation broken, switch can reset under the action of elastic force, whole circuit disconnects.
The physics break-make of crankcase bleed pipe, and crankcase bleed pipe and the connection or disconnection of crankcase or inlet manifold
State, can be converted into electric on-off signal, shown by control unit of engine (herein voltage using most common 5V as
Example explanation, the voltage of other scopes are also suitable)：When crankcase bleed pipe and crankcase or inlet manifold any one connector or
Person's pipeline disconnects in itself, or electric connector metal terminal to ECU power supply short circuits when, Vout output be 5V；Work as crankcase ventilation
Manage intact, and when connecting crankcase and inlet manifold, Vout outputs are 2.5V；When the metal terminal of electric connector is to the ground of ECU
When short-circuit, Vout outputs are 0V, and three above magnitude of voltage is only one when ECU power supplies are 5V and pull-up resistor and described device
Divider resistance it is equal in the case of example, wherein Vout output voltage be divider resistance voltage, be with formulae express
Vout=5*RPartial pressure/(RPull-up +RPartial pressure)。
In the above-described embodiments, the identification of ready-packaged joint connection status is utilized to micro- with male end connector compressing in relation
The contact of dynamic switch is fed back in electric signal, while the identification of the connection status of pipeline is to utilize the conducting wire continuously arranged in pipeline
In the electric signal of feedback, a good diagnostic circuit is then formed with the AD mouths of ECU by divider resistance, can not only be diagnosed
The disconnection of pipeline, while taken into account the short trouble diagnosis of electric parts over the ground, to power supply.
Those skilled in the art can convert the arrangement mode of conducting wire (12,13), such as parallel arrangement；Convertible 6 is integrated micro-
The baseplate material of the circuit board of dynamic switch, such as G10 or flexible board；Convertible wiring layout, such as installs resistance in non-plug side；
The connection mode of convertible conducting wire and circuit board, such as soldering or the wire connection terminal of other forms；Divider resistance can use colour circle
Resistance connects circuit board by Reflow Soldering or ceramic resistor carries out patch connection；Meanwhile the arrangement of resistance is even not limited to
On circuit boards, such as by resistance connect and be installed in electric connector, although there is above-mentioned conversion, its operation principle with it is upper
It is essentially identical to state embodiment, therefore this will not be repeated here.
With it is known using sensor plus the scheme of common ventilation pipe compared with, the present invention is in cost of parts, calibration
Cost, diagnosis robustness aspect have obvious advantage.
Compared with current common ventilation duct, the present invention controls list except providing an extra engine that is connected electrically to
Beyond member, do not change connection and installation, the ventilation duct function of its script obtains 100% succession.
The detailed description of embodiments of the present invention hereinbefore set forth, it should be understood that be described in detail above only
Exemplary, each possible embodiment of the present invention is not described, is not sounded feasible this is because describing each possible embodiment
Border, and it is not impossible.Utilize the technology of the development of current techniques or the present patent application in the future, it is possible to achieve numerous to replace
Embodiment, these embodiments are still in restriction scope of the presently claimed invention.
Claims (8)
- A kind of 1. device disconnected using electrical signal detection crankcase bleed pipe, by electrical conduit（1）, ready-packaged joint（4、5）, band The circuit board assembly of integrated microswitch（2、3）And electric connector（6）Composition；Wherein, the ready-packaged joint（4、5）Fix respectively In electrical conduit（1）Both ends, the band integrates the circuit board assembly of microswitch（2）And electric connector（6）It is fixedly mounted on Ready-packaged joint（4）On, the ready-packaged joint（5）It is equipped with the circuit board assembly of the integrated microswitch of band（3）；The band integrates the circuit board assembly of microswitch（2）It is upper to include microswitch（21）, circuit board（22）, divider resistance （23）, microswitch（21）And divider resistance（23）It is installed in circuit board（22）On；The band integrates the circuit board assembly of microswitch（3）It is upper to include microswitch（31）And circuit board（32）, the fine motion Switch（31）Installed in circuit board（32）On；The electrical conduit（1）By internal lining pipe（10）, internal layer（11）, conducting wire（12、13）And clad（14）Form, conducting wire（12、 13）Parallel arrangement, is arranged in internal layer in a manner of spiral winding（11）Outside, then with one layer of cladding being wrapped on the outside of conducting wire Layer（14）To fix and protect conducting wire, above-mentioned conducting wire（12、13）It is in the middle part in ventilation tube wall section, conducting wire（12、13）Deng Length, uniformly mutually insulated, arrangement, the conducting wire for having certain drift respectively in the both sides of ventilation duct stretches out, easy to circuit board Wire connection terminal be electrically connected；The clad（14）, whole electrical conduit is formed by way of extrusion molding or pyrocondensation Outer surface；The electric connector（6）Including shell（61）And metal terminal（62、63）；The electric connector（6）Metal terminal（62）One end, through divider resistance（23）, with microswitch（21）One end is electrically connected Connect, microswitch（21）The other end and electrical conduit conducting wire（13）It is electrically connected；Metal terminal（63）One end and contact tube The conducting wire on road（12）It is electrically connected；Electrical conduit（1）Other end of conducting wire（13）With microswitch（31）One end is electrically connected；It is micro- Dynamic switch（31）The other end and conducting wire（12）It is electrically connected；Work as ready-packaged joint（4、5）The male end connector at both ends, and electricity are plugged respectively Gas plug（6）When plugging the male end connector of engine control system, the galvanic circle of controller, wherein plug metal terminal are formed （62、63）The other end, the AD mouths of access control unit of engine ECU, one of metal terminal is connected to by pull-up resistor ECU power supplys, another metal terminal access the ground of ECU.
- 2. the device according to claim 1 disconnected using electrical signal detection crankcase bleed pipe, it is characterised in that described Ready-packaged joint（4、5）, on the basis of conventional SAE J2044 ready-packaged joints, the assembling also comprising circuit board and microswitch is empty Between, the space is in quadrangle.
- 3. the device according to claim 1 or 2 disconnected using electrical signal detection crankcase bleed pipe, it is characterised in that The ready-packaged joint（4）Also include "O"-ring（41、42）, "O"-ring（41）And "O"-ring（42）Between space center have On the inside of the siphunculus road of hole, the hole is presented axially in "O"-ring（41）And "O"-ring（42）Between.
- 4. the device according to claim 1 or 2 disconnected using electrical signal detection crankcase bleed pipe, it is characterised in that The ready-packaged joint（5）Also include "O"-ring（51、52）, "O"-ring（51）And "O"-ring（52）Between space center have On the inside of the siphunculus road of hole, the hole is presented axially in "O"-ring（51）And "O"-ring（52）Between.
- 5. the device according to claim 1 disconnected using electrical signal detection crankcase bleed pipe, it is characterised in that described The circuit board assembly of integrated microswitch（2、3）, it is a kind of FR4 plates.
- 6. the device according to claim 1 disconnected using electrical signal detection crankcase bleed pipe, it is characterised in that described Microswitch（21、31）Internal structure be usually contact and spring structure.
- 7. the device according to claim 1 disconnected using electrical signal detection crankcase bleed pipe, it is characterised in that described Divider resistance（23）Resistance value and ECU pull-up resistor resistance values it is equal or close.
- 8. the device according to claim 1 disconnected using electrical signal detection crankcase bleed pipe, it is characterised in that described Divider resistance can also be installed on the circuit board assembly of integrated microswitch（3）On.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721208264.1U CN207278376U (en) | 2017-09-20 | 2017-09-20 | A kind of device disconnected using electrical signal detection crankcase bleed pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721208264.1U CN207278376U (en) | 2017-09-20 | 2017-09-20 | A kind of device disconnected using electrical signal detection crankcase bleed pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207278376U true CN207278376U (en) | 2018-04-27 |
Family
ID=61981564
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721208264.1U Expired - Fee Related CN207278376U (en) | 2017-09-20 | 2017-09-20 | A kind of device disconnected using electrical signal detection crankcase bleed pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207278376U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107676185A (en) * | 2017-09-20 | 2018-02-09 | 范金妹 | A kind of device disconnected using electrical signal detection crankcase bleed pipe |
-
2017
- 2017-09-20 CN CN201721208264.1U patent/CN207278376U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107676185A (en) * | 2017-09-20 | 2018-02-09 | 范金妹 | A kind of device disconnected using electrical signal detection crankcase bleed pipe |
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