CN107449489A - A kind of fuel level sensor and oil level measuring device for vehicle - Google Patents
A kind of fuel level sensor and oil level measuring device for vehicle Download PDFInfo
- Publication number
- CN107449489A CN107449489A CN201710736802.2A CN201710736802A CN107449489A CN 107449489 A CN107449489 A CN 107449489A CN 201710736802 A CN201710736802 A CN 201710736802A CN 107449489 A CN107449489 A CN 107449489A
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- 239000000446 fuel Substances 0.000 title claims abstract description 163
- 239000002828 fuel tank Substances 0.000 claims abstract description 75
- 238000005259 measurement Methods 0.000 claims abstract description 18
- 239000003921 oil Substances 0.000 claims description 85
- 239000007788 liquid Substances 0.000 claims description 37
- 239000000295 fuel oil Substances 0.000 claims description 21
- 238000001514 detection method Methods 0.000 claims description 9
- 230000008859 change Effects 0.000 claims description 8
- 230000006698 induction Effects 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 238000002485 combustion reaction Methods 0.000 claims 2
- 230000002159 abnormal effect Effects 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 9
- 230000008569 process Effects 0.000 abstract description 8
- 238000011161 development Methods 0.000 description 6
- 238000013461 design Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000010761 intermediate fuel oil Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/26—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields
- G01F23/263—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields by measuring variations in capacitance of capacitors
Abstract
The invention provides a kind of fuel level sensor and oil level measuring device for vehicle, fuel level sensor is used to measure the fuel level for entering fuel level sensor to measure the fuel level in fuel tank and export its corresponding electric signal according to the fuel level of measurement；Wherein, vehicle has display, and fuel level sensor is connected from the bottom of fuel tank along the opening that the fuel tank is extended to perpendicular to the direction of fuel tank bottom by sensor wire harness with display；And fuel level sensor along the height extended perpendicular to fuel tank bottom direction is more than the vertical height of fuel tank in this direction.Oil level measuring device includes fuel level sensor and matches the display of connection with fuel level sensor by sensor wire harness.The fuel level sensor assembly that the present invention solves fuel pump in the prior art easily bumps to fuel level sensor and its float in assembling process, causes fuel level sensor performance failure, oil level instrument to match the problem of existing abnormal.
Description
Technical field
The present invention relates to a kind of field of measuring technique, is surveyed more particularly to a kind of fuel level sensor for vehicle and oil level
Measure device.
Background technology
At present, the fuel pump in vehicle fuel tank is point-contact junction with the oil level float sensor in fuel level sensor assembly
Structure, it integrates with fuel pump and assembled.But because the space of fuel tank needs to ensure the fortune of oil level float assembling
Dynamic envelope is without interference, and sensor is contact sensor, therefore, it is very easy to cause fuel pump band fuel level sensor general assembly
It is improper, cause sensor contacts bad or sensor failure, meanwhile, the float of fuel level sensor is easily by fuel tank abnormal vibrations
Influence, cause instrument to show phenomena such as inaccurate.
Therefore, existing fuel pump band fuel level sensor assembly problem present in assembling process has：First, in fuel tank
During assembly packing line, because manual operation fuel pump of taking is artificial with fuel level sensor assembly or in assembling process
Difference in operation, it is easy to the float of fuel level sensor and fuel level sensor is encountered, so as to influence the contact site of fuel level sensor
Bit loss is hindered, and causes fuel level sensor performance failure, oil level instrument matching exception；Second, in transportation, fuel level sensor is very
Easily collide with, it is abnormal to influence fuel level sensor matching because transportation is damaged for parts；The float of fuel level sensor needs only
Vertical mold developing, therefore, development cost of the fuel pump with fuel level sensor is added, so as to increase the development cost of project.
The content of the invention
It is an object of the present invention to provide a kind of fuel level sensor for vehicle, to solve prior art intermediate fuel oil
The fuel level sensor assembly of pump easily bumps to fuel level sensor and its float in assembling process, causes fuel level sensor performance to be lost
Effect, oil level instrument match the problem of existing abnormal.
The present invention one is further objective is that to solve fuel level sensor assembly fuel level sensor in transportation easy
Collide with so that parts damage, the problem of matching is abnormal occur so as to influence fuel level sensor.
The present invention another further objective is that the mold developing of fuel level sensor float is reduced, to reduce fuel pump
The development cost of fuel level sensor.
Especially, the invention provides a kind of fuel level sensor for vehicle, the oil level biography is entered for measuring
The fuel level of sensor with the fuel level in fuel tank is measured and according to the fuel level of measurement output and its
Corresponding electric signal；
Wherein, the vehicle has display, and the fuel level sensor is from the bottom of the fuel tank along perpendicular to institute
The direction for stating fuel tank bottom extends to the opening of the fuel tank, and is connected by sensor wire harness with the display；And
The fuel level sensor is more than the fuel tank along the height extended perpendicular to the fuel tank bottom direction
Vertical height in this direction.
Further, the fuel level sensor is in the form of a column formula structure, and is stretched out from the opening of the fuel tank.
Further, the fuel level sensor has acquisition module, for gathering the liquid level of fuel oil, and according to entrance
The electric capacity that the fuel oil of acquisition module is formed is with corresponding with the oil level variable quantity caused by the oil level variable quantity of the fuel oil
Capacitance change exports electric signal and causes the display to show oil level according to the electric signal.
Further, the acquisition module includes housing and induction electrode, to enter the acquisition module in the fuel oil
Afterwards so that the capacitance between the housing and the induction electrode changes.
Further, the fuel level sensor has modular converter, is connected with the acquisition module, for by the electric capacity
Variable quantity be converted into its corresponding electric signal, with the liquid level position according to the electrical signal detection in fuel tank and defeated
Go out to display so that the display shows the oil level value corresponding with the liquid level position；
Wherein, the electric signal that the capacitance change converts can be carried out linear temperature benefit by the modular converter
Repay, to reduce the error of measurement result or conversion results.
Present invention also offers a kind of oil level measuring device for vehicle, and it includes described fuel level sensor, and it is special
Sign is that the oil level measuring device can be according to the electric signal that the fuel level that the fuel level sensor measures is exported with reality
Now the liquid level in fuel tank is measured.
Further, the oil level measuring device includes display, and it has multiple oil level grades, with according to default
Make liquid level position described in the electrical signal detection of the fuel level sensor output with demarcation and the display is shown and detection
The corresponding oil level grade of the liquid level position.
Further, the oil level measuring device also includes ring flange, located at the top of the fuel tank and is secured to
Connection；
Wherein, the ring flange has default distance with the fuel tank head, is opened with to stretch out the fuel tank
The port of the fuel level sensor of mouth can be connected by the sensor wire harness with the display.
Further, the fuel level sensor has power supply, and the top of the ring flange, which is provided with, to be used to connect the oil level
The both positive and negative polarity interface unit of sensor, the both positive and negative polarity of the both positive and negative polarity of the power supply respectively with the interface unit is connected, to cause
The electric signal of the fuel level sensor output controls the display to show oil level corresponding with the liquid level position of the detection etc.
Level.
Further, the electric signal is current signal, voltage signal or data signal.
Beneficial effects of the present invention can be：
First, the oil level measuring device for vehicle is measured by fuel level sensor to the liquid level in fuel tank, with
Obtain the fluid value in current fuel case.Because fuel level sensor is configured to from the bottom of fuel tank along perpendicular to fuel tank bottom
The direction in portion extends to the opening of fuel tank, and is connected with the display, therefore, because the design height of fuel level sensor is pressed
Set according to the height of fuel tank, therefore, after fuel oil enters fuel level sensor, liquid level and fuel tank in fuel level sensor
Interior liquid level flushes, and fuel level sensor is by the measurement of the fuel level to its inside so as to realizing the survey to liquid level in fuel tank
Amount, and measurement result is converted into electric signal control display the oil level of current fluid level is shown.In this way, and prior art
In there is float the scheme of fuel level sensor compare, the oil level measuring device of this programme, which is not present in assembling process, bumps to oil
Level sensor and its float, cause fuel level sensor performance failure, oil level instrument to match the problem of existing abnormal, also solve existing
The float for having the fuel level sensor in technology is easily collided with transportation so that parts damage, so as to influence oil level biography
There is the problem of matching is abnormal in sensor.Further, since fuel level sensor float needs independent mold developing, therefore, this case can
To remove the expense of fuel level sensor float mold developing, to reduce the development cost of fuel pump fuel level sensor.
Secondly as display can be preset with multiple oil level grades so that the electric signal of fuel level sensor output is examined
The liquid level position signal measured controls display according to default matching and calibration, corresponding oily with the liquid level position for showing with detecting
Position grade.So as to set corresponding oil level grade according to the demand of occupant, in order to clearly remind the current oil level of occupant
State.
Furthermore the modular converter in fuel level sensor can carry out linear temperature benefit to the electric signal that capacitance change converts
Repay, so as to reduce the error of measurement or conversion results.
Brief description of the drawings
Some specific embodiments of the present invention are described in detail by way of example, and not by way of limitation with reference to the accompanying drawings hereinafter.
Identical reference denotes same or similar part or part in accompanying drawing.It should be appreciated by those skilled in the art that these
What accompanying drawing was not necessarily drawn to scale.In accompanying drawing：
Fig. 1 is according to an embodiment of the invention a kind of for the fuel level sensor of vehicle and the attachment structure of fuel tank
Figure；
Fig. 2 is the schematic plan of the connection structure diagram shown in Fig. 1.
Embodiment
Existing oil level sensor of vehicle can float over the surface of oil reservoir by float, and oily number determines the height of float
Low, and utilize lever principle, the other end of float is potentiometer, its height with oil level and reach different current potentials, so as to
Shown on instrument board.Wherein, the principle of fuel level sensor is wire-wound resistor, and resistivity is determined by resistance wire material, resistance
Value is determined by resistivity of material coil turn.Therefore the stable performance of wire-wound resistor be fuel-quantity transducer it is long-term use of it is preferred because
Element.However, in transport or assembling process, fuel level sensor and float is easily caused to collide with, so as to cause oil level to pass
Sensor performance failure, oil level instrument match the problems such as abnormal.Therefore, the present invention from this starting point, it is proposed that one kind be used for car
Fuel level sensor.Fig. 1 is a kind of fuel level sensor and fuel tank for vehicle according to an embodiment of the invention
Connection structure diagram, to measure the oil mass in vehicle fuel tank 1.The vehicle has fuel oil pump assembly and display, oil level sensing
Device 2 can be integrated on fuel oil pump assembly or be separated with fuel oil pump assembly connected, and the fuel oil of fuel level sensor 2 is entered for measuring
Liquid level to be measured to the fuel level in fuel tank 1 and export its corresponding electric signal according to the fuel level of measurement,
Wherein, fuel level sensor 2 can be vertical in fuel tank 1, and from the bottom of fuel tank 1 along perpendicular to the bottom of fuel tank 1
Direction extends to the opening of fuel tank 1 and is connected by sensor wire harness with display, and fuel level sensor 2 along perpendicular to
The height of the bottom direction of fuel tank 1 extension is more than the vertical height of fuel tank 1 in this direction.
Fuel level sensor 2 and fuel oil pump assembly can have installing port respectively, and the installing port of fuel level sensor 2 can directly pass through
The plug receptacle of sensor wire harness is connected to display, or the installing port of fuel level sensor 2 can be connected with fuel oil pump assembly, fire simultaneously
The installing port of oil pump assy is connected to display by the plug receptacle of sensor wire harness.During measurement, the biography of the measurement of fuel level sensor 2
Sense information is transferred to aobvious from the installing port of fuel oil pump assembly or the installing port of fuel level sensor 2 by the plug receptacle of sensor wire harness
Show device.
Because the design height of fuel level sensor 2 is set according to the height of fuel tank 1, therefore, when fuel oil enters oil
After level sensor 2, the liquid level in fuel level sensor 2 flushes with the liquid level in fuel tank 1, and fuel level sensor 2 passes through to its inside
The measurement of fuel level measurement to liquid level in fuel tank 1 can be achieved, and it is aobvious that measurement result is converted into electric signal control
Show that device is shown to the oil level of current fluid level.In this way, compared with there is the scheme of the fuel level sensor of float in the prior art,
On the one hand, the fuel level sensor 2 of this programme is not present in assembling process and bumps to fuel level sensor and its float, causes oil level to pass
Sensor performance failure, oil level instrument match the problem of existing abnormal, on the other hand, also solve oil level sensing of the prior art
The float of device is easily collided with transportation so that parts damage, and matching exception occurs so as to influence fuel level sensor
Problem.Further, since fuel level sensor float needs independent mold developing, therefore, this case can omit fuel level sensor and float
The expense of sub- mold developing, so as to further reduce the development cost of fuel pump fuel level sensor.
In the above-described embodiments, in order to ensure the maximum matching limit value of oil level, the tiltable of fuel level sensor 2 is located at fuel tank 1
It is interior, and the opening of fuel tank 1 is extended to from the bottom of fuel tank 1 along fuel level sensor 2 relative to the incline direction of fuel tank 1
And be connected by sensor wire harness with display, and the inclining relative to fuel tank 1 along fuel level sensor 2 of fuel level sensor 2
The length of tilted direction extension is more than the vertical height of fuel tank 1 in this direction.In certain embodiments, fuel level sensor 2 can
Formula structure is in the form of a column, and protrudes through sensor wire harness from the opening of the fuel tank 1 and is connected with display cooperation.
In any of the above-described embodiment, fuel level sensor 2 can include being used for the power supply for providing electric flux.It can also wrap
Include the acquisition module of collection fuel level, the oil that acquisition module can be according to the electric capacity that the fuel oil for entering acquisition module is formed with fuel oil
The capacitance change output electric signal corresponding with oil level variable quantity caused by the variable quantity of position simultaneously causes display according to electric signal
Show oil level.Further, acquisition module may include housing and induction electrode, to cause housing after fuel oil enters acquisition module
Capacitance between the induction electrode changes.
In certain embodiments, fuel level sensor 2 may also include is converted to electric signal by the data of acquisition module collection
Modular converter, its corresponding electric signal is converted into available for by the variable quantity of electric capacity, with according in electrical signal detection fuel tank
Liquid level position and export to display so that display shows the oil level value corresponding with liquid level position, wherein, modular converter
The electric signal that capacitance change can be converted carries out linear temperature compensation, to reduce the error of measurement result or conversion results.
Fuel level sensor 2 can have a container, when starting the vehicle, due to entering the fuel level and fuel tank of the container
Fuel level in 1 is flushed, and therefore, fuel level sensor 2 can be fired to being measured into the fuel level in the container
The position of liquid level in fuel tank 1.Because acquisition module can be made up of housing and induction electrode, cause when fuel oil enters in container
Capacitance between the housing and induction electrode of acquisition module changes, and now, the modular converter being connected with acquisition module will
The variable quantity of electric capacity is converted into its corresponding electric signal, so as to obtain the liquid level position in fuel tank 1 according to electric signal, and it is defeated
Go out to display, to control the display oil level value corresponding with liquid level position.Because display can be preset with multiple oil levels
Grade so that the liquid level position signal detected by electric signal that fuel level sensor 1 exports controls according to default matching and calibration
Display so that display can show oil level grade corresponding with obtained liquid level position.So as to the need according to occupant
Ask and corresponding oil level grade is set, in order to clearly remind the state of the current oil level of occupant.
Wherein, oil level grade can have full oil level, 3/4ths oil levels, half oil level, alarm oil level and empty oil level
Etc., it can be set accordingly according to the demand of occupant.
Further, because electronic component typically has certain temperature coefficient, it includes positive temperature coefficient and subzero temperature
Spend coefficient, by taking resistance as an example, the resistance value of positive temperature coefficient becomes big with the rise of temperature, and the resistance value of negative temperature coefficient with
The rise of temperature reduces.And the electronic component with temperature coefficient, its output signal can be varied with temperature and drifted about, it is referred to as
" temperature drift ", in order to reduce temperature drift, it is necessary to use some indemnifying measures to offset or reduce the temperature drift of its output to a certain extent,
That is temperature-compensating.Modular converter in fuel level sensor 1 has temperature compensation function, and the electric capacity that can export acquisition module becomes
Change amount is converted into electric signal and carries out linear temperature compensation to it, so as to reduce the error of measurement or conversion results.
In any of the above-described embodiment, the electric signal can be current signal, voltage signal or data signal.
In the embodiment in figure 1, fuel level sensor can be capacitance type sensor, be that one kind is converted into non-electrical physical quantity
There is the capacitance for determining corresponding relation therewith, then a kind of device of voltage (or electric current) signal is converted into by measuring circuit.Electricity
Capacity sensor has the characteristics of high sensitivity, precision is high.CR-606C capacitance type oil level sensors can be used.
The invention also provides a kind of oil level measuring device for vehicle, and it has fuel level sensor 2 and passes through sensing
The display that device wire harness is connected with the fuel level sensor 2 matching, the oil level measuring device can measure according to fuel level sensor 2
The electric signal that is exported of fuel level the liquid level in fuel tank 1 is measured, and shown by display in fuel tank 1
Oil level.Display can have multiple oil level grades, be examined with the electric signal for exporting fuel level sensor 2 according to default matching and calibration
Survey liquid level position and cause display to show oil level grade corresponding with the liquid level position detected.
Because the design height of the fuel level sensor 2 in oil level measuring device is set according to the height of fuel tank 1, because
This, oil level measuring device can realize the measurement to liquid level in fuel tank 1 according to measurement of the fuel level sensor 2 to fuel level.Such as
This, compared with there is the scheme of the oil level measuring device of float in the prior art, on the one hand, the oil level measuring device of this programme is not
Exist and fuel level sensor and its float are bumped in assembling process, cause fuel level sensor performance failure, oil level instrument to match
The problem of now abnormal, on the other hand, the float for also solving fuel level sensor of the prior art easily occurs in transportation
Collide with so that parts damage, the problem of matching is abnormal occur so as to influence fuel level sensor.Further, since fuel level sensor floats
Son needs independent mold developing, and therefore, this case can omit the expense of fuel level sensor float mold developing, so as to further
Reduce the development cost of fuel pump fuel level sensor.
In certain embodiments, oil level measuring device may also include ring flange, located at the top of the fuel tank 1 and and its
It is fixedly connected, as shown in Fig. 2 ring flange has a certain distance with the top of fuel tank 1, can make it that stretching out fuel tank 1 is open
The port of fuel level sensor 2 connection can be matched with display by sensor wire harness.Can also the company of being provided with the top of ring flange 5
Connect the both positive and negative polarity plug receptacle of fuel level sensor 2, the both positive and negative polarity of the power supply top both positive and negative polarity plug receptacle phase with ring flange 5 respectively
Even, with cause electric signal control display that fuel level sensor 2 exports show with the obtained liquid level position of detection it is corresponding oily
Position grade.
In any of the above-described embodiment, the electric signal can be current signal, voltage signal or data signal.
So far, although those skilled in the art will appreciate that detailed herein have shown and described multiple showing for the present invention
Example property embodiment, still, still can be direct according to present disclosure without departing from the spirit and scope of the present invention
It is determined that or derive many other variations or modifications for meeting the principle of the invention.Therefore, the scope of the present invention is understood that and recognized
It is set to and covers other all these variations or modifications.
Claims (10)
1. a kind of fuel level sensor for vehicle, vertical or inclination enters the oil level in fuel tank, for measuring
The fuel level of sensor, measured with the fuel level in the fuel tank to the vehicle and according to the fuel oil of measurement
Liquid level exports its corresponding electric signal；
Wherein, the vehicle has display, and the fuel level sensor is from the bottom of the fuel tank along perpendicular to the combustion
The direction of tank bottoms or the opening for extending to the fuel tank relative to the incline direction of fuel tank along fuel level sensor, and
It is connected by sensor wire harness with the display；And
The fuel level sensor is along the height extended perpendicular to the fuel tank bottom direction or along the fuel level sensor
The length extended relative to the incline direction of the fuel tank is more than the vertical height of the fuel tank.
2. fuel level sensor according to claim 1, it is characterised in that the fuel level sensor is in the form of a column formula structure, and
Stretched out from the opening of the fuel tank.
3. fuel level sensor according to claim 2, it is characterised in that
The fuel level sensor has acquisition module, for gathering the liquid level of fuel oil, and according to the combustion for entering the acquisition module
The electric capacity that oil is formed is defeated with capacitance change corresponding with the oil level variable quantity caused by the oil level variable quantity of the fuel oil
Go out electric signal, to cause the display to show oil level according to the electric signal.
4. fuel level sensor according to claim 3, it is characterised in that
The acquisition module includes housing and induction electrode, to cause the housing after the fuel oil enters the acquisition module
Capacitance between the induction electrode changes.
5. the fuel level sensor according to claim 3 or 4, it is characterised in that
The fuel level sensor has modular converter, is connected with the acquisition module, for the variable quantity of the electric capacity to be converted
For its corresponding electric signal, with the liquid level position according to the electrical signal detection in fuel tank and export to display,
So that the display shows the oil level value corresponding with the liquid level position；
Wherein, the electric signal that the capacitance change converts can be carried out linear temperature compensation by the modular converter, with
Reduce the error of measurement result or conversion results.
6. a kind of oil level measuring device for vehicle, it is characterised in that passed including the oil level described in claim any one of 1-5
Sensor and the display for matching connection with the fuel level sensor by sensor wire harness, to be measured according to the fuel level sensor
The electric signal that is exported of fuel level the liquid level in the fuel tank is measured, and described in being shown by the display
Oil level in fuel tank.
7. oil level measuring device according to claim 6, it is characterised in that the display has multiple oil level grades,
With export the fuel level sensor according to default matching and calibration electrical signal detection described in liquid level position and cause described aobvious
Show that device shows oil level grade corresponding with the liquid level position detected.
8. oil level measuring device according to claim 7, it is characterised in that also including ring flange, located at the fuel tank
Top and be secured to connect；
Wherein, the ring flange has default distance with the fuel tank head, to stretch out the fuel tank opening
The port of fuel level sensor can be connected by the sensor wire harness with the display.
9. oil level measuring device according to claim 8, it is characterised in that
The fuel level sensor has power supply, and the top of the ring flange is provided with the both positive and negative polarity for being used for connecting the fuel level sensor
Interface unit, the both positive and negative polarity of the both positive and negative polarity of the power supply respectively with the interface unit is connected, to cause the fuel level sensor
The electric signal of output controls the display to show oil level grade corresponding with the liquid level position of the detection.
10. according to the oil level measuring device described in claim any one of 6-9, it is characterised in that
The electric signal is current signal, voltage signal or data signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710736802.2A CN107449489A (en) | 2017-08-24 | 2017-08-24 | A kind of fuel level sensor and oil level measuring device for vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710736802.2A CN107449489A (en) | 2017-08-24 | 2017-08-24 | A kind of fuel level sensor and oil level measuring device for vehicle |
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| CN107449489A true CN107449489A (en) | 2017-12-08 |
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| CN201710736802.2A Pending CN107449489A (en) | 2017-08-24 | 2017-08-24 | A kind of fuel level sensor and oil level measuring device for vehicle |
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| CN108759992A (en) * | 2018-07-27 | 2018-11-06 | 宁波洛卡特汽车零部件有限公司 | A kind of fuel liquid level sensor test device and method |
| CN113074798A (en) * | 2020-01-06 | 2021-07-06 | 广州汽车集团股份有限公司 | System and method for detecting oil level of engine oil based on ultrasonic waves |
| CN114137880A (en) * | 2021-11-30 | 2022-03-04 | 重庆长安新能源汽车科技有限公司 | Moving part attitude test system |
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| CN113074798A (en) * | 2020-01-06 | 2021-07-06 | 广州汽车集团股份有限公司 | System and method for detecting oil level of engine oil based on ultrasonic waves |
| CN114137880A (en) * | 2021-11-30 | 2022-03-04 | 重庆长安新能源汽车科技有限公司 | Moving part attitude test system |
| CN114137880B (en) * | 2021-11-30 | 2024-02-02 | 深蓝汽车科技有限公司 | Moving part attitude test system |
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