CN215057652U - Pressure monitoring structure of crankcase - Google Patents
Pressure monitoring structure of crankcase Download PDFInfo
- Publication number
- CN215057652U CN215057652U CN202121472018.3U CN202121472018U CN215057652U CN 215057652 U CN215057652 U CN 215057652U CN 202121472018 U CN202121472018 U CN 202121472018U CN 215057652 U CN215057652 U CN 215057652U
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- crankcase
- pipe
- sensor
- pressure
- pressure monitoring
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Abstract
The utility model discloses a pressure monitoring structure of crankcase belongs to engine technical field, has solved the not accurate, the inconvenient problem of sensor installation of prior art crankcase pressure monitoring. This pressure monitoring structure is including installing the first pressure sensor on the cylinder head cover, be equipped with the exhaust tube on the cylinder head cover, the engine crankcase intercommunication of exhaust tube one end and cylinder head cover below, the exhaust tube other end and oil and gas separator's intake pipe intercommunication, oil and gas separator's outlet duct be connected with the breather pipe with engine air intake system intercommunication, the outlet duct on be equipped with the sensor mount pad, the sensor mount pad on install second pressure sensor. The utility model discloses a pressure monitoring structure of crankcase, pressure sensor simple to operate to but accurate monitoring engine crankcase pressure change has the characteristics that the practicality is strong, application scope is wide.
Description
Technical Field
The utility model relates to the technical field of engines, especially, relate to a pressure monitoring structure of crankcase.
Background
Oil gas in the engine crankcase needs to be separated, engine oil in mixed gas is separated out, the oil gas returns to an oil pan through an oil return pipe, and meanwhile, the separated gas is exhausted into the atmosphere or enters the engine through an air inlet system to be combusted secondarily, but the process does not have the capacity of detecting the pressure change of the crankcase, and when the pressure of the crankcase is in an overhigh state for a long time, faults such as part abrasion, oil seal failure and oil leakage can be caused. The gas emission of the national six-gas engine is more and more strict, the requirement that the discharged gas must enter an engine air inlet system is met, the existing crankcase ventilation system is connected with an oil-gas separator, the separated gas containing fuel gas flows into the engine air inlet system for secondary combustion, in actual use, a pipeline of the oil-gas separator leading to the engine air inlet system can leak or a user privately detaches the pipeline, the gas containing fuel gas flows into the atmosphere, the timely discovery cannot be realized, the air environment is polluted, and therefore the crankcase pressure and the pipeline leading to the engine air inlet system need to be monitored.
In the prior art, a sensor is usually installed on an oil-gas separator for monitoring, the pressure of a crankcase cannot be intuitively and accurately obtained, a bracket special for installing the sensor is not arranged on the oil-gas separator, the sensor is difficult to install, the installation error is large, the measured value of the sensor often deviates from the actual pressure of the crankcase, and the monitoring work is difficult to perform.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is not enough to the above-mentioned of prior art, provides a crankcase's pressure monitoring structure, pressure sensor simple to operate to but accurate monitoring engine crankcase pressure change has the characteristics that the practicality is strong, application scope is wide.
The utility model adopts the technical proposal that: the utility model provides a pressure monitoring structure of crankcase, is including installing the first pressure sensor on the cylinder head cover, be equipped with the exhaust tube on the cylinder head cover, exhaust tube one end and the engine crankcase intercommunication of cylinder head cover below, the exhaust tube other end and oil and gas separator's intake pipe intercommunication, oil and gas separator's outlet duct be connected with the breather pipe with engine air intake system intercommunication, the outlet duct on be equipped with the sensor mount pad, the sensor mount pad on install second pressure sensor.
As a further improvement, the sensor mounting seat is arranged close to the joint of the air outlet pipe and the air vent pipe.
Furthermore, a locking clamp is arranged at the joint of the air outlet pipe and the vent pipe.
Furthermore, the bottom of the sensor mounting seat is provided with an arc-shaped structure matched with the air outlet pipe, and the top of the sensor mounting seat is provided with a positioning hole and a mounting hole.
Furthermore, the sensor mounting seat is detachably connected with the air outlet pipe.
Furthermore, the exhaust pipe comprises a first connecting pipe and a second connecting pipe, one end of the first connecting pipe is connected with the cylinder head cover, the other end of the first connecting pipe is connected with the second connecting pipe, the other end of the second connecting pipe is connected with the oil-gas separator, and locking clamps are arranged at the joints of the first connecting pipe and the second connecting pipe.
Furthermore, the second connecting pipe is provided with an inclined section, and the inclination angle of the inclined section is 30-60 degrees.
Advantageous effects
Compared with the prior art, the utility model, have following advantage:
the utility model discloses a pressure monitoring structure of crankcase, two pressure sensor through cylinder head cover and oil and gas separator export detect crankcase pressure, because crankcase pressure is the negative pressure among the crankcase closed circulation system, whether the pressure variation through two pressure sensor comes the whole closed circulation system of real-time supervision unusual, can also detect the breather pipe that is used for gas flow direction engine air intake system through pressure sensor on the oil and gas separator and whether take place to leak or the obscission, avoid the direct atmosphere of discharging of crankcase ventilation waste gas, and set up the mount pad that is used for installing pressure sensor on oil and gas separator, make pressure sensor can convenient and fast's installation, and the pressure monitoring structure has convenient to use, wide characteristics of application scope.
Drawings
Fig. 1 is a schematic view of the structure of the present invention;
fig. 2 is an enlarged schematic view of the structure of the oil-gas separator of the present invention.
Wherein: 1-a cylinder head cover, 2-an exhaust pipe, 3-a first pressure sensor, 4-a sensor mounting seat, 5-a vent pipe, 6-a locking clamp, 7-an oil-gas separator, 8-a positioning hole, 9-a mounting hole, 10-an air outlet pipe, 11-a second pressure sensor, 21-a first connecting pipe, 22-a second connecting pipe and 221-an inclined section.
Detailed Description
The invention will be further described with reference to specific embodiments shown in the drawings.
Referring to fig. 1-2, the utility model discloses a pressure monitoring structure of crankcase, a serial communication port, including installing first pressure sensor 3 on cylinder head cover 1, be equipped with exhaust tube 2 on the cylinder head cover 1, the engine crankcase intercommunication of 2 one ends of exhaust tube and 1 below of cylinder head cover, the intake pipe intercommunication of the 2 other ends of exhaust tube and oil and gas separator 7, outlet duct 10 of oil and gas separator 7 is connected with breather pipe 5 with engine air intake system intercommunication, be equipped with sensor mount pad 4 on the outlet duct 10, install second pressure sensor 11 on the sensor mount pad 4, through cylinder head cover 1, first pressure sensor 3 and second pressure sensor 11 on the oil and gas separator 7 can detect out crankcase pressure, because crankcase pressure is the negative pressure among the crankcase closed circulation system, whether the pressure variation through first pressure sensor 3 and second pressure sensor 11 can be accurate judgement whole closed circulation system unusual The pressure sensor 3 arranged on the oil-gas separator 7 can detect the pressure change of the breather pipe 5, so as to judge whether the breather pipe 5 leaks or drops, and avoid the direct discharge of the ventilation waste gas of the crankcase into the atmosphere.
Specifically, the sensor mounting seat 4 is close to the joint of the air outlet pipe 10 and the air vent pipe 5, and the pressure value of the separated gas can be more accurately detected by being close to the air vent pipe 5.
Preferably, the joint of the air outlet pipe 10 and the vent pipe 5 is provided with a locking clamp 6 for reinforcing the sealing of the joint, so that the phenomena of gas leakage, measurement value influence and abnormal detection are avoided.
Further, the bottom of the sensor mounting seat 4 is provided with an arc-shaped structure matched with the air outlet pipe 10, the sensor mounting seat can be better attached to the air outlet pipe 1 during mounting, mounting is more firm, the top of the sensor mounting seat 4 is provided with a positioning hole 8 and a mounting hole 9, the second pressure sensor 11 can be quickly positioned by using the positioning hole 8, a bolt is used for penetrating through the mounting hole 9 and the mounting hole 11 to be in threaded connection with the second pressure sensor 11, the second pressure sensor 11 is mounted on the sensor mounting seat 4, and mounting is convenient and fast.
Further, sensor mount pad 4 can be dismantled with outlet duct 10 and be connected, be equipped with the retaining member between sensor mount pad 4 and the oil and gas separator 7, the retaining member can be the bolt, use the bolt to pass and be connected with outlet duct 10 behind the sensor mount pad 4, when installation space is limited, second pressure sensor 11 is difficult to the installation, can install back on sensor mount pad 4 earlier with second pressure sensor 11, integral erection is on outlet duct 10 again, the operating personnel of being convenient for installs according to actual environment fast.
Further, the exhaust tube 2 includes first connecting pipe 21 and second connecting pipe 22, two segmentation structures, can satisfy different installation environment demands, be convenient for install in limited space, the one end and the cylinder head cover 1 of first connecting pipe 21 are connected, the other end is connected with second connecting pipe 22, the other end and the oil and gas separator 7 of second connecting pipe 22 are connected, first connecting pipe 21, the junction of second connecting pipe 22 all is equipped with locking clamp 6, avoid gaseous emergence to leak, influence the measured value, take place to detect abnormal phenomenon.
Furthermore, the second connecting pipe 22 is provided with an inclined section 221, the inclination angle of the inclined section 221 is 30-60 degrees, gas pumped from the crankcase carries fuel oil, after the exhaust pipe 2 is used for a long time, oil stains are easily generated at the bottom of the second connecting pipe 22, and the inclined structure is favorable for the oil stains to flow into the oil-gas separator 7.
The pressure monitoring structure of a crankcase of this embodiment is when using, use exhaust tube 2 earlier to couple together cylinder head cover 1 and oil and gas separator 7, be connected outlet duct 10 and breather pipe 5 of oil and gas separator 7 again, later with first pressure sensor 3, second pressure sensor 11 installs respectively in the exit of cylinder head cover 1 and on the sensor mount pad 4 of oil and gas separator 7, during the installation of second pressure sensor 11 of oil and gas separator 7, can fix a position second pressure sensor 11 fast according to locating hole 8, reuse bolt passes mounting hole 9 and 11 threaded connection of second pressure sensor, the installation is firm again convenient. After the installation is accomplished, can accurately detect crankcase pressure through first pressure sensor 3 on the cylinder head cover 1 and second pressure sensor 11 on the oil and gas separator 7, because crankcase pressure is the negative pressure among the crankcase closed circulation system, whether whole closed circulation system is unusual through the pressure variation of two pressure sensor 3 can be accurate judgement, can detect the pressure variation of breather pipe 5 through second pressure sensor 11 of installing on oil and gas separator 7 to this judges whether the breather pipe 5 takes place to leak or the obscission, avoid the direct atmosphere of discharging of crankcase ventilation waste gas.
The above is only the preferred embodiment of the present invention, and it should be noted that for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements can be made, which will not affect the utility model and the utility of the patent.
Claims (7)
1. The utility model provides a pressure monitoring structure of crankcase, its characterized in that, including installing first pressure sensor (3) on cylinder head cover (1), be equipped with exhaust tube (2) on cylinder head cover (1), exhaust tube (2) one end and the engine crankcase intercommunication of cylinder head cover (1) below, the intake pipe intercommunication of the exhaust tube (2) other end and oil and gas separator (7), outlet duct (10) of oil and gas separator (7) be connected with breather pipe (5) with engine air intake system intercommunication, outlet duct (10) on be equipped with sensor mount pad (4), sensor mount pad (4) on install second pressure sensor (11).
2. A crankcase pressure monitoring arrangement according to claim 1, characterised in that the sensor mounting (4) is arranged close to the connection of the outlet pipe (10) to the vent pipe (5).
3. A pressure monitoring arrangement of a crankcase according to claim 1, characterized in that the connection between the outlet pipe (10) and the vent pipe (5) is provided with a locking clamp (6).
4. A pressure monitoring structure of a crankcase according to claim 1, wherein an arc structure matched with the air outlet pipe (10) is arranged at the bottom of the sensor mounting seat (4), and a positioning hole (8) and a mounting hole (9) are formed in the top of the sensor mounting seat (4).
5. A crankcase pressure monitoring arrangement according to claim 1, characterised in that the sensor mounting (4) is detachably connected to the outlet tube (10).
6. A pressure monitoring structure of a crankcase according to claim 1, wherein the air exhaust pipe (2) comprises a first connecting pipe (21) and a second connecting pipe (22), one end of the first connecting pipe (21) is connected with the cylinder head cover (1), the other end of the first connecting pipe is connected with the second connecting pipe (22), the other end of the second connecting pipe (22) is connected with the oil-gas separator (7), and a locking clamp (6) is arranged at the joint of the first connecting pipe (21) and the second connecting pipe (22).
7. A pressure monitoring arrangement of a crankcase according to claim 6, wherein the second connection tube (22) is provided with an inclined section (221), and the angle of inclination of the inclined section (221) is 30-60 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121472018.3U CN215057652U (en) | 2021-06-30 | 2021-06-30 | Pressure monitoring structure of crankcase |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121472018.3U CN215057652U (en) | 2021-06-30 | 2021-06-30 | Pressure monitoring structure of crankcase |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215057652U true CN215057652U (en) | 2021-12-07 |
Family
ID=79228925
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121472018.3U Active CN215057652U (en) | 2021-06-30 | 2021-06-30 | Pressure monitoring structure of crankcase |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215057652U (en) |
-
2021
- 2021-06-30 CN CN202121472018.3U patent/CN215057652U/en active Active
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