CN207554148U - A kind of crankcase ventilation system pipeline with breaking diagnostic function - Google Patents
A kind of crankcase ventilation system pipeline with breaking diagnostic function Download PDFInfo
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- CN207554148U CN207554148U CN201721618046.5U CN201721618046U CN207554148U CN 207554148 U CN207554148 U CN 207554148U CN 201721618046 U CN201721618046 U CN 201721618046U CN 207554148 U CN207554148 U CN 207554148U
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Abstract
A kind of crankcase ventilation system pipeline with breaking diagnostic function, the pipeline is connected between valve mechanism cover and air filter air outlet pipe, the pipeline is conductive material pipe, pipeline both ends are connect by the pipe fitting of conductive matter with valve mechanism cover and air filter air outlet pipe, connecting wire between two pipe fittings, conducting wire connects engine electric-controlled unit simultaneously, make conductive material pipe, pipe fitting, conducting wire and electronic control unit form one section of complete electric loop, if the sebific duct of either end is not connect with connector, then control unit of engine can detect wire break, so as to judge that sebific duct is disconnected with pipe fitting, quote failure, user is reminded to repair, it can be to avoid pollution of the engine triton exhaust gas to air.
Description
Technical field
The utility model belongs to vehicle engine crankcase ventilating system technical field, and in particular to crankcase ventilation system
Pipeline.
Background technology
The blow-by gas in crankcase is leak by the gap of piston and cylinder wall from automotive engine combustion chamber, is discharged into
The pollution of air can be caused in air, therefore automobile is all required that solar obligation returns to the crankcase that combustion chamber carries out burning processing
Ventilating system.In existing crankcase ventilation system, gs-oil separator is designed in the valve mechanism cover of engine head, oil gas point
Circulation canal is formed by connecting line and inlet manifold and air filter air outlet pipe etc. from device.In this closed crankcase ventage
In system, when in order to carry out the repair of engine, maintenance etc., valve mechanism cover is removed, due to crankcase ventilation system pipeline
Also it to remove, so only reinstalling valve mechanism cover after the completion of there is repair, maintenance etc. and forgetting to reconnect triton pipeline
Situation, cause the leakage of crankcase ventilation system.The end of the year 2016《Light-duty vehicle pollutant emission limit and measuring method
（Chinese 6th stage）》It is formal to announce, it is desirable that manufacturing enterprise's reply Pcv system is monitored, it is ensured that system integrity.It is logical at present
Normal manufacturing enterprise is monitored by the way of pressure sensor is increased in crankcase ventilation system pipeline, as shown in Figure 1.
When the connection of triton pipeline is complete, pipeline inner pressure can be because of the different waves under slightly below atmospheric pressure of engine operating condition
It is dynamic, and when pipeline disconnects, pressure signal then has different performances, and under specific algorithm, crankcase can be led to
The open circuit of wind system is identified, and aforesaid way needs to increase additional pressure sensor, and manufacturing enterprise is needed to different hairs
Motivation, into line sensor arrangement and individually develop diagnostic function, increase the development cost of enterprise.
Invention content
The utility model proposes a kind of crankcase ventilation system pipelines with breaking diagnostic function, and diagnosis principle is simple,
The sensor using measurement pressure is not required to, the arrangement of engine is easy.
The technical solution of the utility model is as follows：
A kind of crankcase ventilation system pipeline with breaking diagnostic function, the pipeline are connected to valve mechanism cover and air filter
Between device air outlet pipe, the pipeline be conductive material pipe, the pipe fitting and valve mechanism cover that pipeline both ends pass through conductive matter
It is connected with air filter air outlet pipe, connecting wire between two pipe fittings, conducting wire connects engine electric-controlled unit, makes conduction material simultaneously
Matter pipe, pipe fitting, conducting wire and electronic control unit form one section of complete electric loop, if the sebific duct of either end does not connect with connector
It connects, then control unit of engine can detect wire break, so as to judge that sebific duct is disconnected with pipe fitting, quote failure, remind and use
Family repairs, and avoids pollution of the engine triton exhaust gas to air.
Further, pipeline uses conductive rubber pipe, and both the yielding ability with sebific duct, made up the position between pipe interface
Deviation, and there is the heat-insulation and heat-preservation of rubber.
Further, pipe fitting uses metallic pipe coupling, not only with conducting function, but also with its intensity of connection.
Description of the drawings
Fig. 1 is the structure diagram of background technology.
Fig. 2 is the structure diagram of the utility model.
In figure, 1- air filters, 2- air filters air outlet pipe, 3- throttle bodies, 4- inlet manifold, 5- valve mechanism cover, 6- cylinders
Lid, 7-PCV valves, 8-PCV valves and inlet manifold connection rubber tube, 9- pressure sensors, 10- valve mechanism cover and air filter air outlet pipe connect
Connect sebific duct, 11- conductive rubbers pipe, 12- pipe fittings, 13, conducting wire, 14- engine electric-controlled units.
Specific embodiment
Below according to attached drawing, specific embodiment of the present utility model is elaborated further.
As shown in Figure 1, the prior art is to install pressure sensor 9 in pipeline to solve the problems, such as.In small engine load
When, the vacuum degree in inlet manifold 4 is sucked the engine blow-by gas in crankcase by Pcv valve 7 and inlet manifold connection rubber tube 8
Into inlet manifold 4, the combustion chamber being mixed into cylinder head 6 with fresh air rekindles.At this time due to engine charge
Amount is smaller, and the pressure drop of air filter 1 is also smaller, and the pressure in air filter air outlet pipe 2 is more than valve mechanism cover 5 close to atmospheric pressure
Interior pressure, so fresh air can be entered by valve mechanism cover and air filter air outlet pipe connection rubber tube 10 in valve mechanism cover 5.
During the big load of engine, engine blow-by gas amount is also more at this time, since the pressure in inlet manifold 4 approaches and atmospheric pressure, because
This engine blow-by gas will also pass through valve mechanism cover and air filter air outlet pipe while inlet manifold 4 are entered by Pcv valve 7
Connection rubber tube 10 is entered in air filter air outlet pipe 2, and being mixed into combustion chamber with fresh air rekindles.Using pressure sensing
The method of device diagnosis leakage is the pressure sensor 9 by integration in valve mechanism cover and air filter air outlet pipe connection rubber tube 10
The pressure value measured, and identification leakage is compared to integrated value and with normal value, diagnostic mode needs increase on pipeline
Add a pressure sensor, and manufacturing enterprise is needed to different engines, into line sensor arrangement and individually exploitation diagnose work(
Energy increases the development cost of enterprise.
The utility model is directed to valve mechanism cover and air filter air outlet pipe connection rubber tube 10 in Fig. 1 and disconnects diagnostic design one kind
New structure, concrete structure are as shown in Figure 2：Connecting tube between valve mechanism cover and air filter air outlet pipe is used into conductive rubber pipe
11, the pipe fitting 12 on cylinder head cover and air filter air outlet pipe is using conductive material and 11 phases of conductive rubber pipe such as metal tubes
Even, it is connected with a conducting wire 13 respectively on two pipe fittings 12, conducting wire connects engine electric-controlled unit 14 simultaneously.Such conductive rubber
Pipe 11, pipe fitting 12, conducting wire 13 and electronic control unit 14 constitute one section of complete electric loop, if the conductive rubber of either end
Pipe 11 is not connect with pipe fitting 12, then control unit of engine can detect electric loop open circuit, so as to judge conductive sebific duct 11
It is disconnected with pipe fitting 12, quotes failure, user is reminded to repair, avoids engine crankshaft ventilation system gas blowby to air
Pollution.
Claims (3)
1. a kind of crankcase ventilation system pipeline with breaking diagnostic function, the pipeline are connected to valve mechanism cover and air filter
Between air outlet pipe, which is characterized in that the pipeline is conductive material pipe, pipeline both ends by the pipe fitting of conductive matter with
Valve mechanism cover is connected with air filter air outlet pipe, and connecting wire between two pipe fittings, conducting wire connects engine electric-controlled unit simultaneously,
Conductive material pipe, pipe fitting, conducting wire and electronic control unit is made to form one section of complete electric loop.
2. the crankcase ventilation system pipeline with breaking diagnostic function according to claim 1, which is characterized in that described
Conductive material pipe uses conductive rubber pipe.
3. the crankcase ventilation system pipeline with breaking diagnostic function according to claim 1, which is characterized in that described
Pipe fitting uses metallic pipe coupling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721618046.5U CN207554148U (en) | 2017-11-28 | 2017-11-28 | A kind of crankcase ventilation system pipeline with breaking diagnostic function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721618046.5U CN207554148U (en) | 2017-11-28 | 2017-11-28 | A kind of crankcase ventilation system pipeline with breaking diagnostic function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207554148U true CN207554148U (en) | 2018-06-29 |
Family
ID=62677744
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721618046.5U Active CN207554148U (en) | 2017-11-28 | 2017-11-28 | A kind of crankcase ventilation system pipeline with breaking diagnostic function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207554148U (en) |
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2017
- 2017-11-28 CN CN201721618046.5U patent/CN207554148U/en active Active
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