CN210977629U - Bent pipe and vehicle with diagnostic function opens circuit - Google Patents
Bent pipe and vehicle with diagnostic function opens circuit Download PDFInfo
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- CN210977629U CN210977629U CN201921828296.0U CN201921828296U CN210977629U CN 210977629 U CN210977629 U CN 210977629U CN 201921828296 U CN201921828296 U CN 201921828296U CN 210977629 U CN210977629 U CN 210977629U
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- way pipe
- tube
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Abstract
The utility model discloses a bent pipe with diagnostic function opens circuit, the bent union coupling is between cylinder head cover and empty filter outlet duct, including first rubber tube, three-way pipe and the second rubber tube that connects gradually, wherein two interfaces of three-way pipe are connected with first rubber tube and second rubber tube respectively, and one other interface sealing connection has pressure sensor, and in pressure sensor's response end stretched into the three-way pipe, this pressure sensor and OBD system data transmission were connected. The device has simple structure and can realize the open circuit diagnosis of the bent pipe. The utility model also discloses a vehicle, including crankcase ventilation system, crankcase ventilation system includes foretell bent pipe that has the diagnostic function of opening circuit.
Description
Technical Field
The utility model relates to an engine crankcase ventilation system, concretely relates to bent pipe and vehicle with diagnostic function opens circuit.
Background
The GB18352-2016 limit for light-duty automotive pollutant emissions and measurement method (sixth stage china) clearly defines that the crankcase ventilation system circuit needs to be kept intact and, if it cannot be exempted, it must be diagnosed.
In the existing ventilation system of the engine crankcase, a rubber pipe is adopted as a bent pipe, one end of the bent pipe is connected with a cylinder head cover through a spring clamp, and the other end of the bent pipe is connected with an air outlet pipe of an air filter through the spring clamp. In order to realize the open circuit diagnosis of the bent pipe, a novel bent pipe needs to be developed.
The current scheme sets up electrically conductive structure in the male joint department at the bent pipe both ends, and the installation is loaded down with trivial details, and the structure is complicated, and need carry out the adaptability to the connection tip of cylinder head cover and empty filter outlet duct, has increased development cycle and production manufacturing cost.
Disclosure of Invention
The utility model aims at providing a bent pipe and vehicle with diagnostic function opens circuit, its simple structure can realize the diagnosis of opening circuit of bent pipe.
Bent pipe with diagnostic function opens circuit, the pipe connection of bent pipe is between cylinder head cover and empty filter outlet duct, including first rubber tube, three-way pipe and the second rubber tube that connects gradually, wherein two interfaces of three-way pipe are connected with first rubber tube and second rubber tube respectively, and one other interface sealing connection has pressure sensor, and in pressure sensor's response end stretched into the three-way pipe, this pressure sensor and OBD system data transmission were connected.
Furthermore, the three-way pipe comprises a straight-through pipe and a bypass pipe communicated with the middle of the straight-through pipe, two ends of the straight-through pipe are respectively connected with the first rubber pipe and the second rubber pipe, and the free end of the bypass pipe is connected with a pressure sensor in a sealing mode.
Furthermore, a transversely extending mounting support lug is arranged on the pressure sensor shell, a through hole is formed in the mounting support lug, a mounting boss is arranged at the position, close to the pressure sensor, of the three-way pipe, a threaded hole is formed in the mounting boss, and a bolt penetrates through the through hole to be matched with the threaded hole to achieve fixed connection of the pressure sensor and the three-way pipe.
Furthermore, sealing bulges are arranged at the end parts of two interfaces of the three-way pipe, which are connected with the first rubber pipe and the second rubber pipe, and the sealing bulges are in interference fit with the inner hole of the first rubber pipe or the second rubber pipe.
A vehicle comprises a crankcase ventilation system, wherein the crankcase ventilation system comprises the above-mentioned bent pipe with the circuit breaking diagnosis function.
The utility model discloses a three-way pipe realizes pressure sensor's arrangement, and this pressure sensor can judge whether the bent pipe both ends break off by the pressure information that the collection obtained in transmitting the pressure information in the bent pipe passageway to the OBD system in real time, need not to adjust the male joint of current bent pipe, simple structure, and development cycle is short, easily arranges the dependable performance.
Drawings
Fig. 1 is one of the schematic structural diagrams of the present invention;
fig. 2 is a second schematic structural diagram of the present invention;
fig. 3 is a schematic diagram of the pressure sensor of the present invention;
fig. 4 is a schematic structural diagram of the three-way pipe of the present invention.
In the figure, 1-a first rubber tube, 2-a second rubber tube, 3-a three-way pipe, 31-a straight-through pipe, 32-a bypass pipe, 4-a pressure sensor, 41-a sensing end, 42-a sealing ring, 5-an installation lug, 6-an installation boss, 61-a threaded hole, 7-a bolt, 8-a spring clamp and 9-a sealing bulge.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
Referring to fig. 1 to 4, the flexible pipe with the function of diagnosing a cut-off is connected between a cylinder head cover and an air outlet pipe of an air filter, and comprises a first rubber pipe 1, a three-way pipe 3 and a second rubber pipe 2 which are sequentially connected. The three-way pipe 3 comprises a straight-through pipe 31 and a bypass pipe 32 communicated with the middle of the straight-through pipe 31, two ends of the straight-through pipe 31 are respectively connected with the first rubber pipe 1 and the second rubber pipe 2, and the free end of the bypass pipe 32 is used for installing the pressure sensor 4. The sensing end 41 of the pressure sensor 4 extends into the bypass pipe 32 for collecting pressure information in the bypass pipe. The pressure sensor 4 is connected with an OBD system of the vehicle in a data transmission mode and used for monitoring pressure information in the crank pipe in real time.
The pressure sensor 4 shell is provided with a transversely extending mounting support lug 5, the mounting support lug 5 is provided with a through hole, the straight pipe 31 of the three-way pipe 3 is provided with a mounting boss 6 at a position close to the pressure sensor 4, the mounting boss 6 is provided with a threaded hole 61, and a bolt 7 penetrates through the through hole to be matched with the threaded hole 61 to realize the fixed connection of the pressure sensor 4 and the three-way pipe 3.
The first rubber hose 1 and the second rubber hose 2 are made of the following materials: the inner FKM and the outer ECO have certain oil resistance and temperature resistance.
In order to improve the connection tightness of the three-way pipe 3 and the first rubber pipe 1 and the second rubber pipe 2, sealing bulges 9 are arranged at the end parts of two connectors of the three-way pipe 3, which are connected with the first rubber pipe 1 and the second rubber pipe 2, and the sealing bulges 9 are in interference fit with inner holes of the first rubber pipe 1 or the second rubber pipe 2.
In order to improve the sealing performance of the connection between the pressure sensor 4 and the three-way pipe 3, a sealing ring 42 is arranged at the part of the pressure sensor 4 extending into the bypass pipe 32.
During specific assembly, the induction end 41 of the pressure sensor 4 is inserted into the bypass pipe 32, the sealing ring 42 is in interference fit with an inner hole at the end part of the bypass pipe 32 to play a sealing role, the pressure sensor 4 is properly rotated, so that the through hole in the mounting support lug 5 is aligned with the threaded hole 61 in the mounting boss 6, the bolt 7 is adopted to penetrate through the through hole to be matched with the threaded hole 61 to realize the fixed connection between the pressure sensor 4 and the three-way pipe 3, and the pressure sensor 4 is connected with an OBD system of a vehicle through a data line in a data transmission manner. And then inserting one end of the first rubber tube 1 and one end of the second rubber tube 2 into two free ends of the straight-through tube 31 respectively, wherein the sealing bulges 9 at the two free ends of the straight-through tube 31 are in interference fit with the inner holes of the first rubber tube 1 and the second rubber tube 2 respectively to play a role in sealing, fixedly connecting the first rubber tube 1 and the second rubber tube 2 with the straight-through tube 31 by adopting a spring clamp, and connecting the other ends of the first rubber tube 1 and the second rubber tube 2 with a cylinder cover and an air filter air outlet pipe respectively to realize the communication of a curved-through tube.
A pressure range can be gathered to the during normal work of bent pipe, has the pine to take off or body itself to have the condition such as rupture when bent pipe both ends, and the gas in the bent pipe is direct to be arranged in the atmosphere, and the pressure that pressure sensor 4 gathered just has obvious change, and OBD diagnoses bent pipe through the pressure change condition whether have a fault.
A vehicle comprises a crankcase ventilation system, wherein the crankcase ventilation system comprises the above-mentioned bent pipe with the circuit breaking diagnosis function.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (5)
1. A bent pipe with a break diagnosis function is connected between a cylinder head cover and an air filter air outlet pipe, and is characterized in that: including first rubber tube (1), three-way pipe (3) and second rubber tube (2) that connect gradually, wherein two interfaces of three-way pipe (3) are connected with first rubber tube (1) and second rubber tube (2) respectively, and another interface sealing connection has pressure sensor (4), and in the response end of pressure sensor (4) stretched into three-way pipe (3), this pressure sensor (4) and OBD system data transmission are connected.
2. The crankshaft tube with trip diagnosis function as claimed in claim 1, wherein: the three-way pipe (3) comprises a straight-through pipe (31) and a bypass pipe (32) communicated with the middle of the straight-through pipe (31), two ends of the straight-through pipe (31) are respectively connected with the first rubber pipe (1) and the second rubber pipe (2), and the free end of the bypass pipe is connected with a pressure sensor (4) in a sealing mode.
3. The crankshaft tube with the trip diagnosis function according to claim 1 or 2, wherein: the pressure sensor (4) is characterized in that a transversely extending mounting support lug (5) is arranged on a shell of the pressure sensor (4), a through hole is formed in the mounting support lug (5), a mounting boss (6) is arranged at a position, close to the pressure sensor (4), of the three-way pipe (3), a threaded hole (61) is formed in the mounting boss (6), and a bolt (7) penetrates through the through hole to be matched with the threaded hole (61) to achieve fixed connection of the pressure sensor (4) and the three-way pipe (3).
4. The crankshaft tube with the trip diagnosis function according to claim 1 or 2, wherein: sealing bulges (9) are arranged at the end parts of two interfaces of the three-way pipe (3) connected with the first rubber pipe (1) and the second rubber pipe (2), and the sealing bulges (9) are in interference fit with the inner hole of the first rubber pipe (1) or the second rubber pipe (2).
5. A vehicle comprising a crankcase ventilation system, characterized in that: the crankcase ventilation system comprises the crankshaft tube with the open circuit diagnosis function as claimed in any one of claims 1 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921828296.0U CN210977629U (en) | 2019-10-29 | 2019-10-29 | Bent pipe and vehicle with diagnostic function opens circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921828296.0U CN210977629U (en) | 2019-10-29 | 2019-10-29 | Bent pipe and vehicle with diagnostic function opens circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210977629U true CN210977629U (en) | 2020-07-10 |
Family
ID=71419350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921828296.0U Active CN210977629U (en) | 2019-10-29 | 2019-10-29 | Bent pipe and vehicle with diagnostic function opens circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210977629U (en) |
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2019
- 2019-10-29 CN CN201921828296.0U patent/CN210977629U/en active Active
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