CN203705165U - Engine oil sampling and mixed gas measurement device - Google Patents
Engine oil sampling and mixed gas measurement device Download PDFInfo
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- CN203705165U CN203705165U CN201320718472.1U CN201320718472U CN203705165U CN 203705165 U CN203705165 U CN 203705165U CN 201320718472 U CN201320718472 U CN 201320718472U CN 203705165 U CN203705165 U CN 203705165U
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Abstract
The utility discloses an engine oil sampling and mixed gas measurement device. The engine oil sampling and mixed gas measurement device comprises an oil collection disc; an oil collecting vertical cylinder, the upper end of which is open, the lower end of which is connected at the bottom board of the oil collecting disc in a sealing manner, and the external side of which defines an overflow oil accommodation space in the oil collecting disc; an oil inlet pipe, which is provided with an oil inlet valve, one end of which is suitable for communicating with an engine oil main oil channel of an engine, and the other end of which is communicated with the internal part of the oil collecting vertical cylinder; an oil storage cup, which is disposed at a position below the oil collecting disc; an oil discharging pipe, which is provided with an oil discharging valve, one end of which is communicated with the overflow oil accommodation space, and the other end of which is communicated with the oil storage cup; and a temperature sensor, which is accommodated in the oil collecting cylinder. The engine oil sampling and mixed gas measurement device is capable of improving operation safety.
Description
Technical field
The utility model relates to a kind of machine oil sampling and mixed tolerance measuring equipment, is applicable to obtain machine oil sample and calculate the mixed tolerance of machine oil when stand engine moves in engine rig test.
Background technology
Analyzing engine motor oil sample is to promote lubricating oil quality, and detecting engine lubrication state is grasped engine and mated fine or not etc. important channel with machine oil.Nearly all engine rig test all needs to obtain the machine oil sample of engine.
The scheme of obtaining at present engine motor oil sample is mainly to drain the oil by oil sump bolt, when this scheme is not suitable for operation, engine motor oil obtains, because, when operation, engine motor oil temperature is high, easily scald, and the number that is not easy to control discharging amount, discharging amount is very few, does not reach test objective; Discharging amount is too much, easily causes lock of machine oil of engine, and insufficient lubrication, brings major injury to engine, and therefore this kind of scheme is only applicable to the machine oil sample acquisition of engine out of service.
For some special test (such as engine pedestal inclining experiment), need to be in the time that engine moves knockout machine oil sample this, having a kind of way is by drawing machine oil from main oil gallery Oil pressure switch, install fuel outlet valve additional, in-engine machine oil sample while obtaining operation by the scheme of Open valve, this scheme has certain convenience, also be easier to control the amount of draining the oil, but must be that operator in person enters testing laboratory's Open valve and draws machine oil, this danger coefficient in the time of the high rotating speed high loaded process of engine be larger.
Utility model content
The utility model aims to provide a kind of for the machine oil sampling at engine rig test and mixed tolerance measuring equipment, and it can improve processing safety.
For this reason, according to an aspect of the present utility model, provide a kind of machine oil sampling and mixed tolerance measuring equipment, be suitable for obtaining machine oil sample and calculating the mixed tolerance of machine oil when engine moves in engine rig test, having comprised: draw-off tray; Oil-collecting column, its upper end open, lower end is sealedly attached to the base plate of draw-off tray, limits overflow machine oil receive space in the outside of oil-collecting column in draw-off tray; With the oil inlet pipe of inlet valve, its one end is suitable for communicating with the machine oil main oil gallery of engine, and the other end communicates with oil-collecting column inside, and oil inlet pipe is divided into Upstream section and tract by described inlet valve; Oil storage cup, it is placed in the position lower than draw-off tray; With the drain line of fuel outlet valve, its one end receives space to communicate with described overflow machine oil, and the other end leads to described oil storage cup; And temperature sensor, it is placed in oil-collecting column.
According to a kind of embodiments possible of the present utility model, described machine oil sampling and mixed tolerance measuring equipment also comprise the first protective cover, and the described draw-off tray that is carrying described oil-collecting column is fixedly mounted in described the first protective cover.
According to a kind of embodiments possible of the present utility model, at least one side of described the first protective cover is opening or transparent, to make the inside of the first protective cover visible.
According to a kind of embodiments possible of the present utility model, described machine oil sampling and mixed tolerance measuring equipment also comprise the second transparent protective cover, are tightly connected in bottom side and draw-off tray, and described oil-collecting column is positioned at the space of the second protective cover and draw-off tray restriction.
According to a kind of embodiments possible of the present utility model, the described other end of described oil inlet pipe communicates with oil-collecting column inside by the hole in the base plate of draw-off tray, described temperature sensor near the base plate of draw-off tray be placed in described hole directly over.
According to a kind of embodiments possible of the present utility model, described machine oil sampling and mixed tolerance measuring equipment also comprise the inlet valve switch opening and closing for controlling described inlet valve, and it is electrically connected with described inlet valve by inlet valve control line.
According to a kind of embodiments possible of the present utility model, described oil-collecting column is for being with graduated glass column, and described oil storage cup is for establishing graduated beaker.
According to a kind of embodiments possible of the present utility model, described inlet valve is normal-closed electromagnetic valve, and described fuel outlet valve is normal-open electromagnetic valve; And described machine oil sampling and mixed tolerance measuring equipment also comprise: for measuring first liquid level sensor of engine oil level of oil storage cup; Be used for the second liquid level sensor of the engine oil level of measuring oil-collecting column; Controller, it is electrically connected with described inlet valve, fuel outlet valve, temperature sensor, the first liquid level sensor, the second liquid level sensor.
According to a kind of embodiments possible of the present utility model, described machine oil sampling and mixed tolerance measuring equipment also comprise the engine operating status detection means for detection of engine running parameter being electrically connected with described controller, and described controller is opened based on inlet valve described in described engine running parameter control.
According to a kind of embodiments possible of the present utility model, in described controller, comprise the computing module of the mixed tolerance of changing value calculation engine machine oil of the detection data based on described temperature sensor and described the second liquid level sensor.
According to a kind of embodiments possible of the present utility model, described machine oil sampling and mixed tolerance measuring equipment also comprise at least one the display device in the mixed air volume calculation result of display device operation information, oil storage cup oil level, machine oil.
According to a kind of embodiments possible of the present utility model, described machine oil sampling and mixed tolerance measuring equipment also comprise the alarming device for provide alarm signal in the time that the machine oil of oil storage cup arrives scheduled volume.
According to the utility model, provide a kind of comparatively safe and need to obtain machine oil sample and can calculate the equipment of the mixed tolerance of machine oil in the time that engine moves for some special test easily and effectively.
First the advantage of equipment of the present utility model is that security improves, and inlet valve switch is placed in to (in observation ward) outside testing laboratory, enters the danger that testing laboratory drives valve, closes valve while avoiding the high rotating speed high loaded process of engine; Next is convenient, and operation of push-button switch is easy to valve operation; Be finally that control accuracy is higher, by the switching of solenoid valve button, can control more accurately compared with manual switching valve the amount of draining the oil.
Brief description of the drawings
Fig. 1 is according to the schematic diagram of the machine oil sampling of a kind of embodiments possible of the present utility model and mixed tolerance measuring equipment;
Fig. 2 is the schematic diagram of machine oil sampling in Fig. 1 and mixed tolerance measuring equipment state before machine oil cooling in measuring process;
Fig. 3 is the schematic diagram of machine oil sampling in Fig. 1 and mixed tolerance measuring equipment state after machine oil cooling in measuring process;
Fig. 4 is according to the schematic diagram of the machine oil sampling of another kind of embodiments possible of the present utility model and mixed tolerance measuring equipment.
Embodiment
Embodiments possible more of the present utility model will be described below with reference to the accompanying drawings.
First, schematically show in Fig. 1 according to the machine oil sampling of a kind of embodiments possible of the present utility model and mixed tolerance measuring equipment, this equipment is applicable at automotive engine test bench.
Described equipment comprises oil inlet pipe 1, for example flexible pipe, and it has import and outlet, and this import is connecting the machine oil main oil gallery of the tested engine on testboard bay.Oil inlet pipe 1 can bear the high temperature (for example >=140 DEG C) of machine oil, and can pressure-bearing (for example >=1Mpa).
Inlet valve 2, it is normal-closed electromagnetic valve, is arranged in the middle of oil inlet pipe 1, for controlling the break-make of oil inlet pipe 1.Oil inlet pipe 1 is divided into Upstream section and tract by inlet valve 2.Inlet valve 2 requires as not dissolve each other with machine oil, good airproof performance.。
The cross-sectional area of oil inlet pipe 1 is known, therefore, after inlet valve 2 installation sites are fixing, can determine volume, especially the tract volume of oil inlet pipe 1 tract.
Described equipment also comprises outer protective cover (the first protective cover) 3, and its front openings (can by transparent material cover cap), so that observe inner case.
In outer protecting cover 3, protective cover (the second protective cover) 4 in settling, be arranged in the oil-collecting column 5 of protective cover 4, be connected and fixedly mount the draw-off tray 6 of outer protecting cover 3 with protective cover 4 sealed bottoms.The end face opening of outer protective cover 3, so that take out interior protective cover 4.
The material of interior protective cover 4 is transparent, so that observe oil-collecting column 5 situations.The temperature that interior protective cover 4 bears and pressure value and oil inlet pipe 1 are basic identical, and can wholely take off.
In example shown in Fig. 1, oil-collecting column 5 is glass column, and its lower end is fixed on the base plate of draw-off tray 6.Oil-collecting column 5 is provided with scale, and volume is known.In addition, oil-collecting column 5 top end openings, so that machine oil overflows.Oil-collecting column 5 bottoms communicate with the outlet of oil inlet pipe 1 by the first hole 6a in the base plate of draw-off tray 6, and fix (not shown) by flange or other measures etc. and the base plate of draw-off tray 6 in the mode of sealing.In draw-off tray 6, limit overflow machine oil in the outside of oil-collecting column 5 and receive space.
In the base plate of draw-off tray 6, be also provided with the second hole 6b, itself and such as flexible pipe of drain line 7() import communicate.The position that oil inlet pipe 1 is connected with the base plate of draw-off tray 6 at the first and second hole places with drain line 7 needs sealing.
The length of drain line 7 can be determined according to actual conditions, and other require with oil inlet pipe 1.
Fuel outlet valve 8 in drain line 7 intermediate arrangement, for controlling passing through of drain line 7.In engine test process, fuel outlet valve 8 is normally open.In example shown in Fig. 1, fuel outlet valve 8 is hand valve, and certainly, it can be also solenoid valve.
Oil storage cup 9, for example beaker are led in the outlet of drain line 7.This oil storage cup 9 is provided with scale, and volume is known, and material is transparent, holds warm bearing capacity with oil inlet pipe 1.Oil storage cup 9 placing heights are lower than draw-off tray 6, to utilize gravitional force smoothly draw-off tray 6 inner engine oils to be emitted.
In addition, inlet valve 2 is connecting inlet valve switch 11 by inlet valve control line 10.In example shown in Fig. 1, inlet valve switch 11 is hand push button switch, opens (or closing) inlet valve 2 when it is pressed, and closes (or unlatching) inlet valve 2 when ejection.
In addition, temperature sensor 12 is placed in oil-collecting column 5, near the first hole 6a in the base plate of draw-off tray 6, is preferably placed at directly over the first hole 6a, so that temperature sensor 12 energy heat exchange are abundant.Temperature sensor 12 can be common thermocouple or other temperature sensors, energy measuring machine oil temperature, and range is more than 140 DEG C.Temperature sensor 12 needs sealing.
In addition, can be equipped with alarming device (not shown) for oil storage cup 9, for example, for provide alarm signal, audio frequency and/or vision signal in the time that the machine oil of oil storage cup 9 arrives scheduled volume.
Describe and utilize the machine oil sampling shown in Fig. 1 and mixed tolerance measuring equipment to operate below with reference to Fig. 2,3.Described operation mainly comprises engine operation oil sample acquisition on opportunity and the mixed air volume calculation of engine motor oil.
First engine operation oil on opportunity sample acquisition is described.
It is the machine oil sample of N, the main oil gallery oil temperature certain volume while being T at rotating speed that presumptive test requires to obtain engine.
When engine speed is stabilized in N, when main oil gallery oil temperature arrives T simultaneously, by inlet valve switch 11, inlet valve 2 is opened by hand.Engine inner engine oil has certain pressure P under lubricating oil pump effect, this pressure P is impelled machine oil, and by oil inlet pipe 1, the first hole 6a in draw-off tray 6 base plates enters in oil-collecting column 5, be full of oil-collecting column 5 until overflow from the top open part of oil-collecting column 5, the machine oil overflowing enters draw-off tray 6, and enters drain line 7 by the second hole 6b in draw-off tray 6 base plates.Now, fuel outlet valve 8 is opened, and therefore, the machine oil overflowing arrives oil storage cup 9 by drain line 7.
Observe the rising of oil storage cup 9 inner engine oil liquid levels, in the time rising to assigned scale line place, close fuel outlet valve 8 by hand, and close inlet valve 2 by inlet valve switch 11, finish to drain the oil.Like this, in oil storage cup 9, just obtained the machine oil sample acquisition of specifying the certain volume requiring.Alarming device can be pointed out the machine oil sample that has obtained designated volume in oil storage cup 9, or the machine oil in oil storage cup 9 is about to reach designated volume.
Next the calculating of the mixed tolerance of engine motor oil described.The mixed tolerance of so-called machine oil refers under uniform temperature, certain pressure condition, and the amount of contained insoluble gas in unit oil level is divided into the mixed gas of volume and the mixed tolerance of quality, and if no special instructions, in the utility model, the mixed tolerance of indication machine oil all refers to that volume mixes tolerance.
The calculating of the mixed tolerance of machine oil can adopt equal time method, etc. temperature drop method, volume expansivity method etc.
Paper the first computing method, equal time method, fixes temperature fall time method.
In the process of draining the oil, machine oil is full of whole piece oil inlet pipe 1 and oil-collecting column 5, if machine oil containing any insoluble gas, in theory when stopping draining the oil after a period of time, the reason that oil-collecting column 5 inner engine oil liquid levels decline is only for machine oil cooling is afterwards due to volumetric contraction.But actual conditions are in machine oil, unavoidably to contain insoluble gas, and therefore, liquid level falling head can be greater than the falling head only being caused by volumetric contraction.The liquid level falling head that deduction volumetric contraction causes can draw the mixed tolerance of machine oil under corresponding conditions.
When the process of draining the oil finishes, abundant gradually along with heat exchange, what temperature sensor 12 was read drain the oil, and temperature can reach a maximal value, is designated as T
max, now corresponding machine oil density is ρ
min.
For equal time method, be fixing temperature fall time, it is δ that temperature fall time is all got in for example supposition at every turn.The highest oil temperature T reading from temperature sensor 12
maxmoment starts timing, after experience temperature fall time δ, records the oil temperature T that now temperature sensor 12 reads simultaneously
δ(now corresponding machine oil density is ρ
δ) and oil-collecting column 5 inner engine oil liquid level scale V
c δ, the above gas volume V of oil-collecting column 5 liquid level
g δfor the volume V of oil-collecting column 5
cwith liquid level scale V
δpoor:
V
gδ=V
c-V
δ （1）
Close inlet valve 2 and stop the moment of draining the oil, oil inlet pipe 1 tract and oil-collecting column 5 inner engine oil gross mass M
t δfor machine oil density p now
minwith oil inlet pipe 1 tract and oil-collecting column 5 volume sum V
beproduct:
M
tδ=V
beρ
min （2）
When temperature-fall period finishes (from reading the highest oil temperature T
maxmoment starts timing, and when experience temperature fall time δ, now corresponding machine oil density is ρ
δ), obtain the now theoretical volume V of oil inlet pipe 1 tract and oil-collecting column 5 inner engine oils by law of conservation of mass
theo δfor:
V
theoδ=M
tδ/ρ
δ （3）
Oil inlet pipe 1 tract of reality and the volume V of oil-collecting column 5 inner engine oils when temperature-fall period finishes
act δfor:
V
actδ=V
be-V
gδ （4）
By the above various mixed tolerance η of volume that obtains machine oil
v(%) be:
η
V=（V
theoδ-V
actδ）/V
theoδ×100% （5）
The mixed tolerance the second computing method of engine motor oil are temperature drop method, fix cooling extent method, its basic ideas and equal time method are similar, and just oil temperature cooling is changed into and waited for the machine oil identical temperature difference (such as temperature drop is all taken as 15 DEG C) that declines by the identical temperature fall time of original wait.Do not repeat them here.
Mixed the third computing method of tolerance of engine motor oil are volume expansivity method, the difference of the method and first two method maximum is, without the density value of consulting machine oil under corresponding temperature, but consult machine oil coefficient of volumetric expansion β (for there is expansion and contraction property and be cooling machine oil for, actual has been body contraction coefficient), coefficient of volumetric expansion at each temperature is different, but because the volume expansivity of machine oil is very little, is 10 substantially
-4(1/K of unit) order of magnitude, and variation with temperature is little, therefore thinks that this coefficient is a constant.
Mix tolerance by this method computing machine oil volume and can use formula below:
η
V=（V
a-β△T V
be）/V
be×100% （6）
In formula:
η
v: machine oil volume mixes tolerance
V
a: the maximum temperature T recording from temperature sensor 12
maxtiming, to oil temperature decline △ T, the volume of oil-collecting column 5 interior gases.
β: the coefficient of volumetric expansion of machine oil.
△ T: the machine oil temperature difference.
V
be: oil inlet pipe 1 tract volume and oil-collecting column 5 volume sums.
Machine oil sampling in Fig. 1 and mixed tolerance measuring equipment are by installing inlet valve (solenoid valve), inlet valve switch additional at oil inlet pipe place, retain original fuel outlet valve (often opening), for example, control the switching of inlet valve with inlet valve switch (pushbutton switch), thereby control the break-make of oil inlet pipe, inlet valve switch is positioned over to (being in observation ward) outside testing laboratory simultaneously, can realize like this and in the time that engine moves, obtain safely machine oil sample and calculate the mixed tolerance of machine oil, avoid operator in the high rotating speed high load capacity of engine situation to enter the danger that testing laboratory drains the oil; Simultaneously push-botton operation is more simple and easy to do than valve operation, puts fuel-flow control also more accurate.
Machine oil sampling in Fig. 1 and mixed tolerance measuring equipment need to relate to operator's manual operations.In order to simplify the operation course, improve performance accuracy, can realize automatic operation to the equipment transformation in Fig. 1.
For example, Fig. 4 shows according to the machine oil sampling of another kind of embodiments possible of the present utility model and mixed tolerance measuring equipment, shown in itself and Fig. 1, the difference of embodiment is mainly, has cancelled inlet valve switch 11, and has changed fuel outlet valve 8 into solenoid valve (open type).
In addition, in equipment shown in Fig. 4, be provided with controller 100, inlet valve 2 is connecting controller 100 by inlet valve control line 10, temperature sensor 12 is connecting controller 100 by temperature sensor data line 13, and fuel outlet valve 8 is connecting controller 100 by fuel outlet valve control line 14.
In addition, equipment shown in Fig. 4 comprises engine operating status detection means 15, in order to detect the parameter in engine operation process, at least comprises engine motor oil temperature, alternatively, also comprises engine speed etc.Engine operating status detection means 15 is connecting controller 100 by detection means data line 16.
In addition, equipment shown in Fig. 4 comprises the first liquid level sensor 17, for measuring the engine oil level of oil storage cup 9.The first liquid level sensor 17 is connecting controller 100 by the first liquid level sensor data line 18.
In addition, equipment shown in Fig. 4 comprises the second liquid level sensor 19, for measuring the engine oil level of oil-collecting column 5.The second liquid level sensor 19 is connecting controller 100 by the second liquid level sensor data line 20.
In addition, in controller 100, comprise computing module, for implementing the mixed air volume calculation of engine motor oil, for example, adopt previously described computing method.
For pointing out the alarming device of oil storage cup 9 oil levels to integrate with the first liquid level sensor 17.Or alarming device can be arranged in controller 100, the detection signal of controller 100 based on the first liquid level sensor 17 starts alarming device.
In addition, controller 100 can comprise display device, mixes air volume calculation result etc. for operation information (operation indicating, mode of operation etc.), oil storage cup 9 oil levels, the machine oil of display device.
Controller 100 detects the operating condition of engine by engine operating status detection means 15, and in the time that engine speed and oil temperature reach predetermined value, opens inlet valve 2.Engine motor oil flows into oil-collecting column 5, overflows to draw-off tray 6 through oil inlet pipe 1, then flows into oil storage cup 9 through drain line 7.In the time that the first liquid level sensor 17 detects that machine oil in oil storage cup 9 reaches predetermined altitude, controller 100 cuts out fuel outlet valve 8 and inlet valve 2.
As need calculation engine machine oil to mix tolerance, the computing module in controller 100 mainly detection data based on temperature sensor 12 and the second liquid level sensor 19 etc. carry out the mixed air volume calculation of machine oil.
Like this, by the equipment shown in Fig. 4, machine oil sampling and mixed tolerance are measured and can automatically be carried out, and manual operation is reduced, and processing safety is further enhanced.In addition, the machine oil in oil storage cup 9 reaches after scheduled volume, and fuel outlet valve 8 cuts out immediately, and therefore, the precision of machine oil sample size can further improve.
Although described the utility model, the details shown in scope of the present utility model is not limited to reference to concrete embodiment here.In the situation that not departing from ultimate principle of the present utility model, can make various amendments for these details.
Claims (11)
1. machine oil sampling and a mixed tolerance measuring equipment, is characterized in that comprising:
Draw-off tray (6);
Oil-collecting column (5), its upper end open, lower end is sealedly attached to the base plate of draw-off tray, limits overflow machine oil receive space in the outside of oil-collecting column in draw-off tray;
With the oil inlet pipe (1) of inlet valve (2), its one end is suitable for communicating with the machine oil main oil gallery of engine, and the other end communicates with oil-collecting column inside, and oil inlet pipe is divided into Upstream section and tract by described inlet valve;
Oil storage cup (9), it is placed in the position lower than draw-off tray;
With the drain line (7) of fuel outlet valve (8), its one end receives space to communicate with described overflow machine oil, and the other end leads to described oil storage cup; And
Temperature sensor (12), it is placed in oil-collecting column.
2. machine oil sampling as claimed in claim 1 and mixed tolerance measuring equipment, is characterized in that, also comprises the first protective cover (3), and the described draw-off tray that is carrying described oil-collecting column is fixedly mounted in described the first protective cover.
3. machine oil sampling as claimed in claim 2 and mixed tolerance measuring equipment, is characterized in that, at least one side of described the first protective cover is opening or transparent, to make the inside of the first protective cover visible.
4. machine oil sampling as claimed in claim 2 and mixed tolerance measuring equipment, is characterized in that, also comprises transparent the second protective cover (4), is tightly connected in bottom side and draw-off tray, and described oil-collecting column is positioned at the space of the second protective cover and draw-off tray restriction.
5. machine oil sampling as claimed in claim 1 and mixed tolerance measuring equipment, it is characterized in that, the described other end of described oil inlet pipe communicates with oil-collecting column inside by the hole in the base plate of draw-off tray, described temperature sensor near the base plate of draw-off tray be placed in described hole directly over.
6. the machine oil sampling as described in any one in claim 1 to 5 and mixed tolerance measuring equipment, is characterized in that, also comprises the inlet valve switch opening and closing for controlling described inlet valve, and it is electrically connected with described inlet valve by inlet valve control line.
7. the machine oil sampling as described in any one in claim 1 to 5 and mixed tolerance measuring equipment, is characterized in that, described oil-collecting column is for being with graduated glass column, and described oil storage cup is for establishing graduated beaker.
8. the machine oil sampling as described in any one in claim 1 to 5 and mixed tolerance measuring equipment, is characterized in that, described inlet valve is normal-closed electromagnetic valve, and described fuel outlet valve is normal-open electromagnetic valve; And described machine oil sampling and mixed tolerance measuring equipment also comprise:
Be used for first liquid level sensor (17) of the engine oil level of measuring oil storage cup;
Be used for second liquid level sensor (19) of the engine oil level of measuring oil-collecting column;
Controller (100), it is electrically connected with described inlet valve, fuel outlet valve, temperature sensor, the first liquid level sensor, the second liquid level sensor.
9. machine oil sampling as claimed in claim 8 and mixed tolerance measuring equipment, is characterized in that, also comprises the engine operating status detection means (15) for detection of engine running parameter being electrically connected with described controller.
10. machine oil sampling as claimed in claim 8 and mixed tolerance measuring equipment, is characterized in that, also comprises display device.
11. machine oil sampling and mixed tolerance measuring equipments as described in any one in claim 1 to 5, is characterized in that, also comprise the alarming device for provide alarm signal in the time that the machine oil of oil storage cup arrives scheduled volume.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320718472.1U CN203705165U (en) | 2013-11-13 | 2013-11-13 | Engine oil sampling and mixed gas measurement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320718472.1U CN203705165U (en) | 2013-11-13 | 2013-11-13 | Engine oil sampling and mixed gas measurement device |
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| Publication Number | Publication Date |
|---|---|
| CN203705165U true CN203705165U (en) | 2014-07-09 |
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ID=51055587
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|---|---|---|---|
| CN201320718472.1U Expired - Fee Related CN203705165U (en) | 2013-11-13 | 2013-11-13 | Engine oil sampling and mixed gas measurement device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104912624A (en) * | 2015-06-25 | 2015-09-16 | 重庆长安汽车股份有限公司 | Apparatus of integrating engine machine oil sampling and machine oil temperature measuring |
| CN105842007A (en) * | 2016-05-18 | 2016-08-10 | 中国北方发动机研究所(天津) | On-line automatic sampling device for lubrication oil of engine test bench |
-
2013
- 2013-11-13 CN CN201320718472.1U patent/CN203705165U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104912624A (en) * | 2015-06-25 | 2015-09-16 | 重庆长安汽车股份有限公司 | Apparatus of integrating engine machine oil sampling and machine oil temperature measuring |
| CN105842007A (en) * | 2016-05-18 | 2016-08-10 | 中国北方发动机研究所(天津) | On-line automatic sampling device for lubrication oil of engine test bench |
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|---|---|---|---|
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Granted publication date: 20140709 Termination date: 20211113 |