CN115199376B - Engine oil gas content measuring device and method - Google Patents
Engine oil gas content measuring device and method Download PDFInfo
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- CN115199376B CN115199376B CN202210988405.5A CN202210988405A CN115199376B CN 115199376 B CN115199376 B CN 115199376B CN 202210988405 A CN202210988405 A CN 202210988405A CN 115199376 B CN115199376 B CN 115199376B
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- 239000010705 motor oil Substances 0.000 title claims abstract description 130
- 238000000034 method Methods 0.000 title claims abstract description 25
- 239000003921 oil Substances 0.000 claims abstract description 188
- 238000007789 sealing Methods 0.000 claims description 13
- 238000005259 measurement Methods 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 2
- 230000003068 static effect Effects 0.000 abstract description 6
- 239000010721 machine oil Substances 0.000 abstract 1
- 230000008569 process Effects 0.000 description 7
- 230000001050 lubricating effect Effects 0.000 description 4
- 230000000284 resting effect Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000000691 measurement method Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- ZZIZZTHXZRDOFM-XFULWGLBSA-N tamsulosin hydrochloride Chemical compound [H+].[Cl-].CCOC1=CC=CC=C1OCCN[C@H](C)CC1=CC=C(OC)C(S(N)(=O)=O)=C1 ZZIZZTHXZRDOFM-XFULWGLBSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 235000013547 stew Nutrition 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
- F01M11/10—Indicating devices; Other safety devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/26—Oils; Viscous liquids; Paints; Inks
- G01N33/28—Oils, i.e. hydrocarbon liquids
- G01N33/2835—Specific substances contained in the oils or fuels
- G01N33/2841—Gas in oils, e.g. hydrogen in insulating oils
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- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
Abstract
The application discloses machine oil gas content measuring device belongs to vehicle technical field. The engine oil gas content measuring device comprises a constant temperature box, a base, an oil pipeline, a quick connector, a measuring cylinder, a temperature sensor and a static frame; the base is provided with a first channel, a second channel and a third channel and is communicated with each other; the oil delivery pipeline comprises an oil inlet pipeline and an oil discharge pipeline, two ends of the oil inlet pipeline are respectively communicated with the engine and the first channel, and two ends of the oil discharge pipeline are respectively communicated with the engine and the second channel; the quick connector comprises a first male connector and a female connector, the first male connector is communicated with the third channel, and the female connector is communicated with the measuring cylinder; the temperature sensor is used for measuring a first temperature of the engine oil in the measuring cylinder; the rest frame comprises a rest frame body and a second male connector, and the lower end of a rest through hole of the rest frame body is communicated with the second male connector. By adopting the method and the device, the accuracy of the first volume and the first temperature of the measured engine oil is improved, so that the accuracy of the calculated air content of the engine oil is improved.
Description
Technical Field
The application relates to the technical field of vehicles, in particular to an engine oil gas content measuring device and method.
Background
The performance of the lubricating system of the engine has an important influence on the abrasion of each friction pair of the engine, so that the reliability of the engine is influenced, the air content of engine oil in the engine is an important factor influencing the performance of the lubricating system, the quality of an oil film of the friction pair is influenced by the too large air content of the engine oil, the lubricating effect is reduced, the abrasion of the engine is caused by the reduction of the lubricating effect, and even the engine is damaged. Therefore, in the engine development stage, the oil gas content of the engine oil in the engine in different states is measured, for example, the oil gas content of the engine oil in the engine oil pan is measured under the influence of centrifugal force, inertial force, vibration, and the like.
The common method for measuring the gas content of the engine oil is to directly extract the engine oil in the engine under different states, place the engine oil in a container, measure the current first volume and the first temperature of the engine oil, allow the gas dissolved in the engine oil to naturally precipitate after the engine oil is stood for a period of time, record the second volume and the second temperature after the engine oil is stood, and finally calculate the gas content of the engine oil based on the first volume, the first temperature, the second volume and the second temperature.
However, during the process of taking the oil out of the engine to the container, a part of the gas in the oil has been separated out, resulting in inaccuracy of the measured first volume of the oil. And due to the rapid change in the external environment temperature (e.g., the temperature in the morning and the temperature in the noon differ greatly), the oil is in a stratified state when it is left standing, resulting in inaccuracy in the measured second temperature of the oil. Both the first temperature and the first volume are accurate, resulting in inaccuracy in the measured air content of the oil.
Disclosure of Invention
The embodiment of the application provides an engine oil gas content measuring device and method, which can solve the technical problems in the related art, and the technical scheme of the engine oil gas content measuring device and method is as follows:
in a first aspect, an embodiment of the present application provides an engine oil gas content measurement device, where the engine oil gas content measurement device includes an incubator, a base, an oil pipeline, a quick connector, a measuring cylinder, a temperature sensor, and a static frame;
the base is fixed in the incubator and is provided with a first channel, a second channel and a third channel, and the first end of the first channel, the first end of the second channel and the first end of the third channel are mutually communicated;
the oil pipeline comprises an oil inlet pipeline and an oil outlet pipeline, wherein two ends of the oil inlet pipeline are respectively communicated with a main oil duct of the engine and a second end of the first channel, two ends of the oil outlet pipeline are respectively communicated with an oil pan of the engine and a second end of the second channel, a first valve is arranged on the oil inlet pipeline, and a second valve is arranged on the oil outlet pipeline;
the quick connector is a two-end opening and closing type quick connector, the quick connector comprises a first male connector and a female connector, the first male connector is communicated with the second end of the third channel, the female connector is communicated with the opening end of the measuring cylinder, the first male connector can be connected with the female connector, when the first male connector is connected with the female connector, the second end of the third channel is communicated with the opening end of the measuring cylinder, and when the first male connector is not connected with the female connector, the first male connector and the female connector are respectively sealed;
the temperature sensor is positioned in the incubator and connected with the base, and is used for measuring the first temperature of the engine oil in the measuring cylinder;
the utility model discloses a measuring cylinder, including the constant temperature cabinet, the frame of standing is located in the constant temperature cabinet, the frame of standing includes frame body and the public joint of second of standing, the frame body of standing with the constant temperature cabinet is connected, the frame body of standing has the through-hole of standing, the axis of through-hole of standing is parallel with the plumb line, the upper end opening of through-hole of standing, the lower extreme of through-hole of standing with the public joint intercommunication of second, the public joint of second can with female joint connection, works as the public joint of second with female joint connection, the through-hole of standing with the open end intercommunication of graduated flask, the frame of standing is used for supporting the graduated flask that is full of engine oil and stews.
In one possible implementation, the incubator has an oil inlet hole and an oil drain hole;
the oil inlet pipeline is located in the oil inlet hole, the oil drain pipeline is located in the oil drain hole, one end of the oil inlet pipeline, which is close to a main oil duct of the engine, and one end of the oil drain pipeline, which is close to an oil pan of the engine, are both located outside the incubator, and one end of the oil inlet pipeline, which is close to the first channel, and one end of the oil drain pipeline, which is close to the second channel, are both located inside the incubator.
In one possible implementation manner, the engine oil gas content measuring device further comprises an oil inlet hole sealing ring and an oil drain hole sealing ring;
the oil inlet sealing ring is positioned between the inner side wall of the oil inlet and the outer side wall of the oil inlet pipeline and is connected with the constant temperature box;
the oil drain hole sealing ring is positioned between the inner side wall of the oil drain hole and the outer side wall of the oil drain pipeline and is connected with the constant temperature box.
In one possible implementation, the first end of the first channel, the first end of the second channel, and the first end of the third channel are all located inside a base, the second end of the first channel and the second end of the second channel are located at opposite ends of the base, and the second end of the third channel is located at a top end of the base.
In one possible implementation, the bottom end of the base is connected with the incubator.
In one possible implementation, the measuring cylinder comprises a cylinder body, a piston and a pull rod;
the cylinder body is provided with an opening end and a bottom end, the opening end is opposite to the bottom end, the opening end of the cylinder body is communicated with the female connector, and the bottom end is provided with a pressure hole;
the piston is positioned in the cylinder;
the pull rod is located in the pressure hole, one end of the pull rod is connected with the piston and located in the cylinder, the other end of the pull rod is located outside the cylinder, and a gap is formed between the pull rod and the pressure hole.
In one possible implementation, the detection end of the temperature sensor is located inside the first channel, or inside the second channel, or inside the third channel.
In one possible implementation manner, the engine oil gas content measurement device further comprises a first indicator light and a second indicator light;
when the first valve is opened, the first indicator light is opened, and when the first valve is closed, the first indicator light is closed;
and when the second valve is opened, the second indicator light is opened, and when the second valve is closed, the second indicator light is closed.
In a second aspect, an embodiment of the present application provides an engine oil gas content measurement method, where the engine oil gas content measurement method is applied to the engine oil gas content measurement device described in any one of the above;
the method comprises the following steps:
controlling the temperature of the incubator to be at a preset temperature, and connecting the first male connector with the female connector;
controlling the first valve and the second valve to be opened;
controlling the engine to start, when the starting time of the engine reaches a first preset time, controlling the second valve to be closed, when the measuring cylinder is full of engine oil, controlling the first valve to be closed, and recording the first volume of the engine oil in the measuring cylinder and the first temperature of the temperature sensor;
separating the first male connector from the female connector, connecting the female connector with the second male connector, standing the measuring cylinder, and recording a second volume and a second temperature of engine oil in the measuring cylinder when the standing time reaches a second preset time;
the gas content of the engine oil is calculated based on the first volume, the first temperature, the second volume, and the second temperature.
The technical scheme provided by the embodiment of the application at least comprises the following beneficial effects:
the embodiment of the application provides an engine oil gas content measuring device, and the device includes thermostated container, base, oil pipeline, quick-operation joint, graduated flask, temperature sensor and static frame.
The base has first passageway, second passageway and third passageway, oil pipeline includes oil feed pipeline and oil drain pipeline, oil feed pipeline's both ends respectively with the main oil duct of engine, the second end intercommunication of first passageway, oil drain pipeline's both ends respectively with the oil pan of engine, the second end intercommunication of second passageway, the second end of third passageway and the open end intercommunication of graduated flask, like this, the pipeline of closed loop has been formed through base and oil pipeline, the contact of engine oil and outside air has been reduced, the volume of the in-process gas that engine oil took out from the engine has been reduced, thereby the accuracy of the first volume of the just taken out of measured engine oil has been improved, the accuracy of the air content of the engine oil calculated has been improved.
And the constant temperature of the engine oil outside temperature during standing is ensured by the arrangement of the constant temperature box, and the influence of the outside temperature change on the engine oil during standing is avoided, so that the accuracy of the measured second temperature of the engine oil after standing is improved, and the accuracy of the calculated air content of the engine oil is improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of an engine oil gas content measuring device according to an embodiment of the present application;
FIG. 2 is a schematic view of a stationary rack and cylinder configuration shown in an embodiment of the present application;
FIG. 3 is a schematic diagram of an engine oil gas content measurement method according to an embodiment of the present disclosure;
fig. 4 is a schematic structural view of a measuring cylinder according to an embodiment of the present application.
Description of the drawings
1. A constant temperature box;
2. a base; 21. a first channel; 22. a second channel; 23. a third channel;
3. an oil delivery pipeline; 31. an oil inlet pipe; 32. an oil discharge pipeline; 311. a first valve; 321. a second valve;
4. a quick connector; 41. a first male connector; 42. a female joint;
5. a measuring cylinder; 51. a cylinder; 52. a piston; 53. a pull rod; 511. an open end; 512. a bottom end;
5121. a pressure hole;
6. a temperature sensor;
7. a static frame; 71. standing the frame body; 72. a second male connector; 711. standing the through hole;
10. an engine;
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the embodiments of the present application will be described in further detail below with reference to the accompanying drawings.
The embodiment of the application provides an engine oil gas content measuring device, as shown in fig. 1, the engine oil gas content measuring device includes incubator 1, base 2, oil pipeline 3, quick-operation joint 4, graduated flask 5, temperature sensor 6 and stand frame 7.
The following describes the above components respectively:
incubator 1
The incubator 1 has a temperature control system that can control the temperature inside the incubator 1 according to a set preset temperature so as to be constant at the preset temperature.
The processing method of the temperature control system can be as follows: the temperature in the incubator 1 is periodically detected, when the temperature in the incubator 1 is larger than the preset temperature and the temperature difference between the temperature and the temperature is larger than or equal to the difference threshold value, the temperature in the incubator 1 is increased until the temperature in the incubator 1 is equal to the preset temperature, when the temperature in the incubator 1 is smaller than the preset temperature and the temperature difference between the temperature and the temperature is larger than or equal to the difference threshold value, the temperature in the incubator 1 is reduced until the temperature in the incubator 1 is equal to the preset temperature, and the temperature in the incubator 1 is always in a constant state by the method.
Of course, the processing method of the temperature control system in the incubator 1 may be other reasonable methods, which are not limited in the embodiment of the present application.
Base 2
As shown in fig. 1, the base 2 is fixed in the incubator 1, and the shape of the base 2 may be any reasonable shape, for example, may be cylindrical, prismatic, or the like, which is not limited in the embodiment of the present application.
The base 2 has a first channel 21, a second channel 22 and a third channel 23, the first channel 21, the second channel 22 and the third channel 23 each having opposite first and second ends, the first ends of the first channel 21, the second channel 22 and the third channel 23 communicating with each other.
In one possible implementation, the positions of the first channel 21, the second channel 22 and the third channel 23 may be as follows: the first end of the first channel 21, the first end of the second channel 22 and the first end of the third channel 23 may all be located inside the base 2, the second end of the first channel 21, the second end of the second channel 22 and the second end of the third channel may all be located on the outer side of the base 2, the second end of the first channel 21 and the second end of the second channel 22 may all be located at opposite ends of the side of the base 2, and the second end of the third channel 23 may be located at the top end of the base 2. Because the open end of the measuring cylinder 5 is communicated with the second end of the third channel 23, the second end of the third channel 23 is arranged at the top end of the base 2, so that the base 2 can play a certain supporting role on the measuring cylinder 5 after the measuring cylinder 5 is installed, and the stability of the engine oil gas content measuring device is improved.
In this case, the fixed position between the base 2 and the oven 1 may be: the bottom of the base 2 is connected with the incubator 1. Of course, the position and manner of connection of the base 2 to the incubator 1 may be any reasonable position and manner, and the embodiment of the present application is not limited thereto.
Oil pipeline 3
The oil delivery pipe 3 is used to deliver oil between the cylinder 5 and the engine 10.
As shown in fig. 1, the oil delivery pipe 3 includes an oil feed pipe 31 for delivering oil from the engine 10 to the cylinder 5, and an oil discharge pipe 32 for delivering excess oil from the position of the cylinder 5 back to the engine 10.
The two ends of the oil inlet pipe 31 are respectively communicated with the main oil duct of the engine 10 and the second end of the first channel 21, so that the oil inlet pipe 31 can convey the engine oil in the engine 10 from the main oil duct to the inside of the base 2, the two ends of the oil outlet pipe 32 are respectively communicated with the oil pan of the engine 10 and the second end of the second channel 22, and thus, the oil outlet pipe 32 can convey the excessive engine oil in the inside of the base 2 from the second end of the second channel 22 back to the inside of the oil pan of the engine 10. The oil inlet pipe 31 and the oil outlet pipe 32 form a closed-loop circuit between the inside of the base 2 and the engine 10.
The second end of the third channel 23 of the base 2 is communicated with the open end of the measuring cylinder 5, so that the engine oil conveyed to the inside of the base 2 by the oil inlet pipeline 31 can be conveyed to the measuring cylinder 5 through the third channel 23, the closed loop circuit can reduce the contact between the engine oil and the outside air as much as possible in the process of conveying the engine oil, the precipitation volume of gas in the engine oil in the process of conveying the engine oil is reduced, and the accuracy of the first volume of the engine oil (the volume of the engine oil in the measuring cylinder 5 when the engine oil is just filled in the measuring cylinder 5) is improved.
The oil inlet pipe 31 is provided with a first valve 311, and the oil outlet pipe 32 is provided with a second valve 321, so that the opening and closing of the oil inlet pipe 31 can be controlled by the first valve 311, and the opening and closing of the oil outlet pipe 32 can be controlled by the second valve 321.
In one possible implementation, the first valve 311 and the second valve 321 may be electromagnetic valves, or may be manual valves, which is not limited in the embodiment of the present application.
In one possible implementation, since the oil delivery pipe 3 is located in the incubator 1 and needs to communicate with the engine 10 outside the incubator 1, the structure of the oil gas content measuring apparatus may be set as follows:
the oven 1 has an oil inlet hole and an oil drain hole. The oil inlet pipe 31 is located in the oil inlet hole, and the oil discharge pipe 32 is located in the oil discharge hole, i.e., the oil inlet pipe 31 passes through the oil inlet hole, and the oil discharge pipe 32 passes through the oil discharge hole.
One end of the oil inlet pipe 31 near the main oil gallery of the engine 10 and one end of the oil drain pipe 32 near the oil pan of the engine 10 are both located outside the oven 1, and one end of the oil inlet pipe 31 near the first passage 21 and one end of the oil drain pipe 32 near the second passage 22 are both located inside the oven 1.
Further, in order to improve the stability of the temperature in the incubator 1, the following arrangement may be made:
the engine oil gas content measuring device may include an oil inlet hole sealing ring and an oil drain hole sealing ring. The oil inlet sealing ring is positioned between the inner side wall of the oil inlet and the outer side wall of the oil inlet pipeline 31 and is connected with the constant temperature box 1. The oil drain hole sealing ring is positioned between the inner side wall of the oil drain hole and the outer side wall of the oil drain pipeline 32 and is connected with the constant temperature box 1.
Quick connector 4
The quick connector 4 is a two-end opening and closing type quick connector and comprises a first male connector 41 and a female connector 42, wherein the first male connector 41 and the female connector 42 can be connected, when the first male connector 41 is connected with the female connector 42, the first male connector 41 is communicated with the female connector 42, and when the first male connector 41 is not connected with the female connector 42, one end, connected with the first male connector 41 and the female connector 42, can be sealed automatically. The specific structure of the quick connector 4 may be any structure that satisfies the above-described functions, which is not limited in the embodiment of the present application.
In this embodiment, as shown in fig. 1, the first male connector 41 is communicated with the second end of the third channel 23, and the female connector 42 is communicated with the open end of the measuring cylinder 5, so when the first male connector 41 is connected with the female connector 42, the third channel 23 can be communicated with the measuring cylinder 5, in this case, the engine oil in the third channel 23 can be delivered into the measuring cylinder 5, after the measuring cylinder 5 is filled with the engine oil, the first male connector 41 can be separated from the female connector 42, at this time, the first male connector 41 and the female connector 42 are respectively sealed, and the engine oil in the measuring cylinder 5 can be sealed in the measuring cylinder 5 by the sealing of the female connector 42.
Measuring cylinder 5
The measuring cylinder 5 has a volume scale on its outer surface, which facilitates the operator to check the volume of the oil in the measuring cylinder 5, i.e. to check the first and second volumes of the oil (the volume of the oil after standing).
The open end of the measuring cylinder 5 communicates with the second end of the third passage 23, and engine oil is transferred from the main oil gallery of the engine 10 to the inside of the base 2 through the oil inlet pipe 31, and then transferred from the inside of the base 2 to the measuring cylinder 5 through the third passage 23.
Temperature sensor 6
As shown in fig. 1, a temperature sensor 6 is located in the incubator 1 and connected to the base 2, the temperature sensor 6 being used to measure a first temperature of the engine oil in the cylinder 5.
The base 2 may have a mounting hole, which is in communication with the inside of the base 2, in which the temperature sensor 6 may be mounted, and the detection end of the temperature sensor 6 may be located inside the first channel 21, inside the second channel 22, or inside the third channel 23, and since the engine oil in the measuring cylinder 5 is conveyed through the first channel 21, the second channel 22, and the third channel 23, and the measuring cylinder 5 is closer to these channels, the detection end of the temperature sensor 6 is disposed in any channel to detect, and the detected temperature is very different from or even the same as the temperature in the measuring cylinder 5.
Static frame 7
The rest 7 is located inside the oven 1 and is connected to the oven 1 (not shown in the figures). The static frame 7 is used for supporting the measuring cylinder 5 filled with engine oil for standing.
As shown in fig. 2, the rest stand 7 includes a rest stand body 71 and a second male connector 72.
The stationary frame body 71 is connected to the incubator 1, and the stationary frame body 71 has a stationary through hole 711, and an axis of the stationary through hole 711 is parallel to the plumb line. The upper end of the stationary through hole 711 is open, and the lower end communicates with the second male connector 72.
The second male connector 72 can be connected with the female connector 42, when the second male connector 72 is connected with the female connector 42, the second male connector 72 is communicated with the female connector 42, that is, the standing through hole 711 is communicated with the open end of the measuring cylinder 5, at this time, engine oil in the measuring cylinder 5 is in contact with air outside the measuring cylinder 5, and the engine oil can be separated out of gas to be stood.
The embodiment of the application provides a method for measuring the gas content of engine oil, which is applied to any one of the engine oil gas content measuring devices, as shown in fig. 3, and comprises the following steps:
301. the temperature of the incubator 1 is controlled to be at a preset temperature, and the first male connector 41 is connected to the female connector 42.
The worker may empirically set the preset temperature such that the preset temperature is lower than the temperature of the oil in the engine 10 and both have a certain temperature difference, and in general, the temperature of the oil in the engine 10 is high, at which time the preset temperature may be set to 10 ℃, and so on, which is not limited in the embodiment of the present application.
In practice, the temperature inside the oven 1 can be controlled at a preset temperature. The first male connector 41 is connected with the female connector 42 such that the third passage 23 communicates with the inside of the measuring cylinder 5. The oil delivery pipe 3 is installed, namely, two ends of the oil inlet pipe 31 are respectively communicated with a main oil duct of the engine 10 and a second end of the first channel 21, two ends of the oil discharge pipe 32 are respectively communicated with an oil pan of the engine 10 and a second end of the second channel 22, and the first valve 311 and the second valve 321 are closed.
It will be appreciated that the various processes described above are not in sequential order and may be performed as appropriate.
302. The first valve 311 and the second valve 321 are controlled to be opened.
303. The engine 10 is controlled to start, when the starting time of the engine 10 reaches the first preset time, the second valve 321 is controlled to be closed, when the cylinder 5 is full of engine oil, the first valve 311 is controlled to be closed, and the first volume of engine oil in the cylinder 5 and the first temperature of the temperature sensor 6 are recorded.
In implementation, after the first valve 311 and the second valve 321 are opened, the engine 10 may be controlled to start, that is, the engine oil pump in the engine 10 is controlled to start, the engine oil in the engine 10 is started to be delivered from the main oil gallery, one part of the engine oil is delivered to devices needing lubrication in the engine 10, the other part of the engine oil is delivered to the oil inlet pipe 31, and then the engine oil is delivered to the base 2 and the measuring cylinder 5 through the oil inlet pipe 31, and then is delivered back to the oil pan of the engine 10 through the oil outlet pipe 32, so as to form a closed loop.
When the starting time of the engine 10 reaches the first preset time, the engine oil is circulated in the closed loop for a plurality of times, and at this time, the engine oil is added to the oil delivery pipe 3, the base 2 and the measuring cylinder 5 so that the temperature of the engine oil is the same as that of the engine oil, at this time, the second valve 321 can be closed, the oil discharge pipe 32 is blocked, and the engine oil flows into the measuring cylinder 5 under the action of pressure to fill the measuring cylinder 5. When the cylinder 5 is filled, the oil in the main oil gallery will no longer flow into the oil inlet pipe 31, but will flow all the way to the components of the engine 10 that require lubrication.
When the staff member sees that the cylinder 5 is already filled with oil, the first valve 311 may be controlled to be closed, and at this time, the engine 10 is taken out of the cylinder 5, and at this time, the staff member may start reading, and record the current reading of the temperature sensor 6, that is, the first temperature.
Since there is a certain change in the volume of the oil in the cylinder 5 when the oil flows, the volume of the oil in the cylinder 5 can be read after the second valve 321 is closed, i.e. the first volume, and at this time, the read first volume is more accurate. It will be appreciated that since oil may generate bubbles in the cylinder 5 during delivery, the maximum volume of oil in the cylinder 5 containing bubbles is read directly when the first volume is read.
304. The first male connector 41 and the female connector 42 are separated, the female connector 42 is connected with the second male connector 72, the measuring cylinder 5 is kept still, and when the keeping still time reaches a second preset time, a second volume and a second temperature of engine oil in the measuring cylinder 5 are recorded.
In implementation, after the measuring cylinder 5 is filled, the first male connector 41 and the female connector 42 can be separated, at this time, the first male connector 41 and the female connector are sealed respectively, so that the engine oil in the base 2 cannot flow out and be wasted, recycling can be performed, and the female connector 42 is sealed so that the engine oil in the measuring cylinder 5 is sealed in the measuring cylinder 5, thereby facilitating movement of the subsequent measuring cylinder 5.
The female connector 42 is connected with the second male connector 72 on the standing frame 7, so that the measuring cylinder 5 is communicated with the lower end of the standing through hole 711, and thus, the engine oil in the measuring cylinder 5 can be contacted with the external air through the opening of the upper end of the standing through hole 711, and the engine oil can be separated out.
When the standing time period reaches the second preset time period, the engine oil in the measuring cylinder 5 is already standing, and the staff can read the second volume of the engine oil in the measuring cylinder 5.
The second preset duration may be set according to the requirement, for example, may be 5 hours, etc., which is not limited in this embodiment of the present application.
In one possible implementation, if the resting period is sufficient, the temperature of the oil in the cylinder 5 after resting is also equal to the temperature of the oil in the cylinder 5 after resting, because the temperature inside the incubator 1 is always constant at the preset temperature, and therefore the second temperature of the oil in the cylinder 5 after resting is equal to the preset temperature. Alternatively, the worker may use a temperature sensor to detect the temperature of the engine oil in the measuring cylinder 5 after standing, thereby obtaining the second temperature of the engine oil, which is not limited in the embodiment of the present application.
305. The gas content of the engine oil is calculated based on the first volume, the first temperature, the second volume, and the second temperature.
In one possible implementation, the method of the gas content of the computer oil by the first volume, the first temperature, the second volume, and the second temperature may be as follows:
the calculation is performed by the following formulas (1) to (5):
Aeration[％]＝(V refAir /V refOil )×100％ (1)
V refAir ＝V oAir ×(T ref /T o ) (2)
V refOil ＝V oOi1 [1+β(T ref -T o )] (3)
V oOil ＝V eoil [1+β(T o -T e )] (4)
V oAir ＝V oMix -V oOil (5)
wherein, the aeronation [%]Is the air content of engine oil, V oMix Is the first volume (containing bubbles), T o Is a first temperature, V eoil Is a second volume, T e Is the second temperature, beta is a preset value (which may be 0.0007 (1/K)), V oOil Is the maximum engine oil volume, T ref Is the reference temperature (which may be 293 (K)), V oAir Is the maximum gas volume, V refOil Is to correct the volume of engine oil, V refAir Is the corrected air volume. The volume units can be mL, and the temperature units can be K.
The gas content of the engine oil can be calculated by the above formula. Of course, other methods are possible, and the embodiments of the present application are not limited thereto.
In the above process, a closed loop pipeline is formed through the base 2 and the oil pipeline 3, so that the contact between engine oil and external air is reduced, and the volume of gas separated out in the process of taking engine oil out of the engine 10 is reduced, thereby improving the accuracy of the measured first volume of the engine oil just taken out and the accuracy of the calculated air content of the engine oil.
And, the constant temperature of engine oil external temperature when keeping still has been guaranteed to the setting of thermostated container 1, has avoided the engine oil when keeping still to receive the influence of external temperature variation to the accuracy of the second temperature of the engine oil after having improved the measuring and keeping still has improved the accuracy of the air content of the engine oil that calculates.
In one possible implementation manner, in order to improve the operation convenience of the engine oil gas content measurement device, the following arrangement may be further performed:
the measuring cylinder 5 may comprise a cylinder 51, a piston 52 and a pull rod 53.
The cylinder 51 has an open end 511 and a bottom end 512, the open end 511 being opposite to the bottom end 512, wherein the open end 511 is the open end of the measuring cylinder 5. The open end 511 of the barrel 51 communicates with the female connector 42 and the bottom end 512 has a pressure port 5121.
The piston 52 is located inside the cylinder 51. The pull rod 53 is positioned within the pressure hole 5121, i.e., the pull rod 53 passes through the pressure hole 5121. One end of the pull rod 53 is connected with the piston 52, and can be connected with one end of the piston 52 close to the bottom end, the other end of the pull rod 53 is positioned outside the cylinder 51, and a gap is formed between the pull rod 53 and the pressure hole 5121.
In the case of the structure of the cylinder 5 described above, in the oil gas content measuring method, before step 302, the other end of the pull rod 53, i.e., the end located outside the cylinder 51, may be pulled, by pulling the pull rod 53, to pull the piston 52 to the bottom end of the cylinder 51, so that the gas pressure inside the cylinder 5 and the base 2 is reduced, as shown in fig. 4, and thus, after the first valve 311 and the second valve 321 are opened in step 302, the oil in the main oil gallery of the engine 10 is more easily transferred into the oil feed pipe 31 by the pressure difference.
In one possible implementation manner, in order to make the flow path performed by the engine oil gas content measuring device more clear for a worker, the following arrangement may be further performed:
the engine oil gas content measuring device may further include a first indicator light and a second indicator light.
When the first valve 311 is opened, the first indicator light is opened, and when the first valve 311 is closed, the first indicator light is closed. The second indicator light is turned on when the second valve 321 is turned on, and turned off when the second valve 321 is turned off. In this way, the operator can clearly see the current step according to whether the first indicator light and the second indicator light are on.
The technical scheme provided by the embodiment of the application at least comprises the following beneficial effects:
the embodiment of the application provides an engine oil gas content measuring device, and the device includes incubator 1, base 2, oil pipeline 3, quick-operation joint 4, graduated flask 5, temperature sensor 6 and rest frame 7.
The base 2 is provided with a first channel 21, a second channel 22 and a third channel 23, the oil conveying pipeline 3 comprises an oil inlet pipeline 31 and an oil outlet pipeline 32, two ends of the oil inlet pipeline 31 are respectively communicated with a main oil duct of the engine 10 and a second end of the first channel 21, two ends of the oil outlet pipeline 32 are respectively communicated with an oil pan of the engine 10 and a second end of the second channel 22, and a second end of the third channel 23 is communicated with an opening end of the measuring cylinder 5, so that a closed-loop pipeline is formed through the base 2 and the oil conveying pipeline 3, contact between engine oil and outside air is reduced, the volume of gas separated out in the process of taking engine oil out of the engine 10 is reduced, accuracy of the measured first volume of engine oil just taken out is improved, and accuracy of calculated air content of engine oil is improved.
And, the constant temperature of engine oil external temperature when keeping still has been guaranteed to the setting of thermostated container 1, has avoided the engine oil when keeping still to receive the influence of external temperature variation to the accuracy of the second temperature of the engine oil after having improved the measuring and keeping still has improved the accuracy of the air content of the engine oil that calculates.
The foregoing description of the preferred embodiments is merely exemplary in nature and is in no way intended to limit the invention, since it is intended that all modifications, equivalents, improvements, etc. that fall within the spirit and scope of the invention.
Claims (10)
1. The engine oil gas content measuring device is characterized by comprising a constant temperature box (1), a base (2), an oil pipeline (3), a quick connector (4), a measuring cylinder (5), a temperature sensor (6) and a standing frame (7);
the base (2) is fixed in the incubator (1), the base (2) is provided with a first channel (21), a second channel (22) and a third channel (23), and the first end of the first channel (21), the first end of the second channel (22) and the first end of the third channel (23) are mutually communicated;
the oil conveying pipeline (3) comprises an oil inlet pipeline (31) and an oil outlet pipeline (32), wherein two ends of the oil inlet pipeline (31) are respectively communicated with a main oil duct of the engine (10) and a second end of the first channel (21), two ends of the oil outlet pipeline (32) are respectively communicated with an oil pan of the engine (10) and a second end of the second channel (22), a first valve (311) is arranged on the oil inlet pipeline (31), and a second valve (321) is arranged on the oil outlet pipeline (32);
the quick connector (4) is a two-end opening and closing type quick connector, the quick connector (4) comprises a first male connector (41) and a female connector (42), the first male connector (41) is communicated with the second end of the third channel (23), the female connector (42) is communicated with the opening end of the measuring cylinder (5), the first male connector (41) can be connected with the female connector (42), when the first male connector (41) is connected with the female connector (42), the second end of the third channel (23) is communicated with the opening end of the measuring cylinder (5), and when the first male connector (41) is not connected with the female connector (42), the first male connector (41) and the female connector (42) are respectively sealed;
the temperature sensor (6) is positioned in the constant temperature box (1) and is connected with the base (2), and the temperature sensor (6) is used for measuring the first temperature of the engine oil in the measuring cylinder (5);
the utility model provides a stand frame (7) is located in incubator (1), stand frame (7) including stand frame body (71) and second male joint (72), stand frame body (71) with incubator (1) are connected, stand frame body (71) have through-hole (711) of standing, the axis and the plumb line of through-hole (711) are parallel, the upper end opening of through-hole (711) of standing, the lower extreme of through-hole (711) of standing with second male joint (72) intercommunication, second male joint (72) can with female joint (42) are connected, works as second male joint (72) with female joint (42) are connected, through-hole (711) of standing with the open end intercommunication of graduated flask (5), stand frame (7) are used for supporting graduated flask (5) that are full of engine oil and keep at rest.
2. The engine oil gas content measuring device according to claim 1, wherein the incubator (1) has an oil inlet hole and an oil drain hole;
the oil inlet pipeline (31) is located in the oil inlet hole, the oil outlet pipeline (32) is located in the oil outlet hole, one end of the oil inlet pipeline (31) close to a main oil duct of the engine (10) and one end of the oil outlet pipeline (32) close to an oil pan of the engine (10) are both located outside the incubator (1), one end of the oil inlet pipeline (31) close to the first channel (21) and one end of the oil outlet pipeline (32) close to the second channel (22) are both located inside the incubator (1).
3. The oil gas content measuring device according to claim 2, further comprising an oil inlet hole sealing ring and an oil drain hole sealing ring;
the oil inlet sealing ring is positioned between the inner side wall of the oil inlet and the outer side wall of the oil inlet pipeline (31) and is connected with the incubator (1);
the oil drain hole sealing ring is positioned between the inner side wall of the oil drain hole and the outer side wall of the oil drain pipeline (32) and is connected with the constant temperature box (1).
4. The engine oil gas content measuring device according to claim 1, wherein the first end of the first passage (21), the first end of the second passage (22) and the first end of the third passage (23) are all located inside a base (2), the second end of the first passage (21) and the second end of the second passage (22) are located at opposite ends of the base (2), and the second end of the third passage (23) is located at the top end of the base (2).
5. The engine oil gas content measuring device according to claim 4, wherein the bottom end of the base (2) is connected to the thermostat (1).
6. The engine oil gas content measuring device according to claim 1, characterized in that the measuring cylinder (5) comprises a cylinder body (51), a piston (52) and a pull rod (53);
the cylinder (51) has an open end (511) and a bottom end (512), the open end (511) being opposite the bottom end (512), the open end (511) of the cylinder (51) being in communication with the female connector (42), the bottom end (512) having a pressure hole (5121);
the piston (52) is located inside the cylinder (51);
the pull rod (53) is located in the pressure hole (5121), one end of the pull rod (53) is connected with the piston (52) and located inside the cylinder body (51), the other end of the pull rod (53) is located outside the cylinder body (51), and a gap is formed between the pull rod (53) and the pressure hole (5121).
7. The engine oil gas content measuring device according to claim 1, characterized in that the detection end of the temperature sensor (6) is located inside the first passage (21), or inside the second passage (22), or inside the third passage (23).
8. The oil gas content measurement device according to claim 1, further comprising a first indicator light and a second indicator light;
the first indicator light is turned on when the first valve (311) is turned on, and the first indicator light is turned off when the first valve (311) is turned off;
the second indicator light is turned on when the second valve (321) is turned on, and is turned off when the second valve (321) is turned off.
9. The engine oil gas content measuring device according to claim 1, wherein the first valve (311) and the second valve (321) are both solenoid valves.
10. An oil gas content measuring method, characterized in that the oil gas content measuring method is applied to the oil gas content measuring device according to any one of claims 1 to 9;
the method comprises the following steps:
controlling the temperature of the incubator (1) to be at a preset temperature, and connecting the first male connector (41) with the female connector (42);
controlling the first valve (311) and the second valve (321) to open;
controlling the engine (10) to start, when the starting time of the engine (10) reaches a first preset time, controlling the second valve (321) to be closed, when the measuring cylinder (5) is full of engine oil, controlling the first valve (311) to be closed, and recording the first volume of the engine oil in the measuring cylinder (5) and the first temperature of the temperature sensor (6);
separating the first male connector (41) from the female connector (42), connecting the female connector (42) with the second male connector (72), standing the measuring cylinder (5), and recording a second volume and a second temperature of engine oil in the measuring cylinder (5) when the standing time reaches a second preset time;
the gas content of the engine oil is calculated based on the first volume, the first temperature, the second volume, and the second temperature.
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Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29606210U1 (en) * | 1996-04-04 | 1996-06-20 | FEV Motorentechnik GmbH & Co. KG, 52078 Aachen | Device for measuring the gas content in liquids |
| US5528923A (en) * | 1992-12-21 | 1996-06-25 | Ledez; Kenneth M. | Gas amount and solubility investigation apparatus |
| JP2002168854A (en) * | 2000-12-05 | 2002-06-14 | Mitsubishi Electric Corp | Device and method for measuring quantity of gas dissolved in liquid |
| FR2858056A1 (en) * | 2003-07-25 | 2005-01-28 | Renault Sa | Device and method for measuring the quantity of air present in a hydraulic control oil held in a box |
| JP2006313148A (en) * | 2005-04-08 | 2006-11-16 | Nissan Motor Co Ltd | Mixed air amount measuring device and method |
| JP2007064820A (en) * | 2005-08-31 | 2007-03-15 | Toyota Motor Corp | Device and method for measuring air bubble ratio |
| JP2007064822A (en) * | 2005-08-31 | 2007-03-15 | Toyota Motor Corp | Device and method for measuring air bubble fraction |
| FR2891624A3 (en) * | 2005-09-30 | 2007-04-06 | Renault Sas | Lubricating oil`s aeration rate measurement device for e.g. motor vehicle engine, has piston inserted in measurement cell in sealed manner, where cell has temperature sensor to measure temperature of oil sample brought to cell via pipeline |
| KR20080054810A (en) * | 2006-12-13 | 2008-06-19 | 현대자동차주식회사 | Aeration detection apparatus for engine oil and method thereof |
| CN101441131A (en) * | 2008-12-08 | 2009-05-27 | 奇瑞汽车股份有限公司 | Engine oil consumption quantity measuring instrument |
| CN202210067U (en) * | 2011-08-09 | 2012-05-02 | 北汽福田汽车股份有限公司 | Engine oil collecting device and engine oil air content measuring system |
| CN202382975U (en) * | 2011-12-30 | 2012-08-15 | 南车株洲电机有限公司 | Oil sampling device |
| KR101262272B1 (en) * | 2011-11-16 | 2013-05-08 | 기아자동차주식회사 | Apparatus for measuring air amount of engine oil and method using the same |
| KR20150065295A (en) * | 2013-12-05 | 2015-06-15 | 주식회사 포스코 | System for measuring air in oil of hydraulic apparatus |
| KR200486992Y1 (en) * | 2018-05-31 | 2018-08-27 | 김은새 | Convenient Testing Tube Rack Using LED Lighting Fixtures and Waste Mobile Phone(Smart Phone) |
| CN112051106A (en) * | 2020-09-29 | 2020-12-08 | 广西桂冠电力股份有限公司大化水力发电总厂 | Sampling device and sampling method for transformer bushing oil |
| CN113092308A (en) * | 2021-04-28 | 2021-07-09 | 国网安徽省电力有限公司电力科学研究院 | Double-piston type transformer oil gas content field testing device and method |
| CN216381549U (en) * | 2021-09-26 | 2022-04-26 | 潍柴动力股份有限公司 | Engine oil quality monitoring device and engine |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7086280B2 (en) * | 2003-10-06 | 2006-08-08 | Ricardo, Inc. | Aeration sensing device |
| KR100552210B1 (en) * | 2004-06-28 | 2006-02-13 | 현대자동차주식회사 | Measurement system for oil aeration of internal combustion engine |
| EP3870370A4 (en) * | 2018-10-24 | 2022-07-27 | Perkinelmer Health Sciences Canada, Inc | Sample vials, rack mounts and sampling devices using them |
-
2022
- 2022-08-17 CN CN202210988405.5A patent/CN115199376B/en active Active
Patent Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5528923A (en) * | 1992-12-21 | 1996-06-25 | Ledez; Kenneth M. | Gas amount and solubility investigation apparatus |
| DE29606210U1 (en) * | 1996-04-04 | 1996-06-20 | FEV Motorentechnik GmbH & Co. KG, 52078 Aachen | Device for measuring the gas content in liquids |
| JP2002168854A (en) * | 2000-12-05 | 2002-06-14 | Mitsubishi Electric Corp | Device and method for measuring quantity of gas dissolved in liquid |
| FR2858056A1 (en) * | 2003-07-25 | 2005-01-28 | Renault Sa | Device and method for measuring the quantity of air present in a hydraulic control oil held in a box |
| JP2006313148A (en) * | 2005-04-08 | 2006-11-16 | Nissan Motor Co Ltd | Mixed air amount measuring device and method |
| JP2007064820A (en) * | 2005-08-31 | 2007-03-15 | Toyota Motor Corp | Device and method for measuring air bubble ratio |
| JP2007064822A (en) * | 2005-08-31 | 2007-03-15 | Toyota Motor Corp | Device and method for measuring air bubble fraction |
| FR2891624A3 (en) * | 2005-09-30 | 2007-04-06 | Renault Sas | Lubricating oil`s aeration rate measurement device for e.g. motor vehicle engine, has piston inserted in measurement cell in sealed manner, where cell has temperature sensor to measure temperature of oil sample brought to cell via pipeline |
| KR20080054810A (en) * | 2006-12-13 | 2008-06-19 | 현대자동차주식회사 | Aeration detection apparatus for engine oil and method thereof |
| CN101441131A (en) * | 2008-12-08 | 2009-05-27 | 奇瑞汽车股份有限公司 | Engine oil consumption quantity measuring instrument |
| CN202210067U (en) * | 2011-08-09 | 2012-05-02 | 北汽福田汽车股份有限公司 | Engine oil collecting device and engine oil air content measuring system |
| KR101262272B1 (en) * | 2011-11-16 | 2013-05-08 | 기아자동차주식회사 | Apparatus for measuring air amount of engine oil and method using the same |
| CN202382975U (en) * | 2011-12-30 | 2012-08-15 | 南车株洲电机有限公司 | Oil sampling device |
| KR20150065295A (en) * | 2013-12-05 | 2015-06-15 | 주식회사 포스코 | System for measuring air in oil of hydraulic apparatus |
| KR200486992Y1 (en) * | 2018-05-31 | 2018-08-27 | 김은새 | Convenient Testing Tube Rack Using LED Lighting Fixtures and Waste Mobile Phone(Smart Phone) |
| CN112051106A (en) * | 2020-09-29 | 2020-12-08 | 广西桂冠电力股份有限公司大化水力发电总厂 | Sampling device and sampling method for transformer bushing oil |
| CN113092308A (en) * | 2021-04-28 | 2021-07-09 | 国网安徽省电力有限公司电力科学研究院 | Double-piston type transformer oil gas content field testing device and method |
| CN216381549U (en) * | 2021-09-26 | 2022-04-26 | 潍柴动力股份有限公司 | Engine oil quality monitoring device and engine |
Non-Patent Citations (1)
| Title |
|---|
| 倾斜试验人工放油法机油含气量误差研究;余成龙;刘磊;马允普;;内燃机(01);第56-62页 * |
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