KR101639033B1 - Temperature and Volume Measuring System of Fuel Tank at Vehicle by using Gas Pump - Google Patents
Temperature and Volume Measuring System of Fuel Tank at Vehicle by using Gas Pump Download PDFInfo
- Publication number
- KR101639033B1 KR101639033B1 KR1020150047414A KR20150047414A KR101639033B1 KR 101639033 B1 KR101639033 B1 KR 101639033B1 KR 1020150047414 A KR1020150047414 A KR 1020150047414A KR 20150047414 A KR20150047414 A KR 20150047414A KR 101639033 B1 KR101639033 B1 KR 101639033B1
- Authority
- KR
- South Korea
- Prior art keywords
- fuel
- temperature
- information
- residual
- amount
- Prior art date
Links
Images
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
- G01F23/0007—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 for discrete indicating and measuring
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
- B60K15/04—Tank inlets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
- B60K15/06—Fuel tanks characterised by fuel reserve systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K37/00—Dashboards
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F22/00—Methods or apparatus for measuring volume of fluids or fluent solid material, not otherwise provided for
-
- G01F25/0061—
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F25/00—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume
- G01F25/0084—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume for measuring volume
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
- G01K13/02—Thermometers specially adapted for specific purposes for measuring temperature of moving fluids or granular materials capable of flow
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/20—Devices for withdrawing samples in the liquid or fluent state for flowing or falling materials
- G01N1/2035—Devices for withdrawing samples in the liquid or fluent state for flowing or falling materials by deviating part of a fluid stream, e.g. by drawing-off or tapping
Abstract
The fuel tank real-time temperature and fuel measurement system of the vehicle of the present invention includes a main fuel pipe for connecting a fuel tank and a fuel supply port of a vehicle, and a protruding circular sloping portion provided on the main pipe for facilitating the inflow of fuel. An outflow pipe connected to the main pipe and formed at 1/8 to 1/10 of the inner diameter of the inflow pipe to be connected to the lower side of the main body and opposite to the inflow pipe; A sample flow rate unit including a temperature sensor installed at an upper portion of the body and measuring the temperature in a state where the fuel is stabilized and a temperature sensor transmission unit for converting the sensor signal of the temperature sensor into a digital signal for transmission, And the remaining fuel amount information and residual temperature information from the fuel tank measuring apparatus terminal in a digital manner And corrects the fuel injection amount information newly provided when the fuel is injected from the fuel supply port based on the temperature information of the fuel injection temperature sensor measured in real time and stores the corrected fuel injection amount in the fuel tank A total fuel quantity corrected by summing up the remaining fuel quantities, and providing the corrected total fuel quantity and fuel temperature information through the display unit; and a control unit for registering the vehicle terminal number and making payment through the financial institution server, And a fuel tank measuring device terminal for measuring the residual fuel amount and residual temperature stored in the fuel tank of the vehicle and converting the measured residual fuel amount into a digital signal and transmitting the digital signal to the vehicle instrument part .
Description
The present invention relates to a real-time temperature and fuel tank measurement system of a fuel tank of a vehicle. Generally, a vehicle consumes fuel while operating a gasoline or gasoline at a gas station. Therefore, the driver needs to know the amount of fuel remaining in the fuel tank, and more precisely, to know the amount of fuel that has been calibrated to the temperature of 15 ° C. In addition, when a certain amount of fuel is injected at a gas station, it is necessary to grasp the correct temperature corrected fuel amount and temperature after the fuel injection. Accordingly, the present invention provides a fuel supply system that grasps the temperature and the fuel amount of the presently fueled fuel, and estimates the temperature when the fuel tank remaining amount and the newly injected fuel amount are mixed in the fuel tank based on the fuel temperature and fuel amount information remaining in the fuel tank And the present flow rate of the fuel tank according to the temperature correction as real time and provide it to the driver.
The conventional technique related to the present invention is disclosed in Korean Patent Publication No. 10-1251721 (published on March 31, 2013). 1 is a block diagram of the conventional fuel quantity measurement system. 1, the conventional fuel quantity measurement system includes a
The
The conventional fuel quantity measurement system as described above can measure and express the amount of fuel in the fuel tank, but can not provide a fuel amount by temperature correction. In addition, the conventional fuel quantity measurement system as described above has a problem that when the fuel is fed in a state in which the fuel amount is remaining in the fuel tank, the temperature and the corrected fuel amount for the mixed fuel after the fuel injection can not be measured and provided. Therefore, the present invention is intended to measure and provide a fuel amount corrected according to the temperature and the temperature in a state where two fuels are mixed when a new fuel is injected into the fuel tank in a state where a residual amount remains in the fuel tank.
The fuel tank real-time temperature and fuel measurement system of the present invention having the above-described object is provided with a main pipe for connecting a fuel tank and a fuel supply port of a vehicle, and a protruding circular slit provided in the main pipe for facilitating the inflow of fuel The main body is connected to the lower part of the body part. The body part is fastened to the inflow pipe. The lower part of the body part is fastened to the opposite side of the inflow pipe and is formed at 1/8 to 1/10 of the inner diameter of the inflow pipe. An outlet pipe connected to the pipe, a temperature sensor installed on the upper part of the body for measuring the temperature in a state where the fuel is stabilized, and a temperature sensor transmitting unit for converting the sensor signal of the temperature sensor into a digital signal for transmission A sample flow rate unit for receiving the temperature sensor signal from the temperature sensor transfer unit, The oil temperature information is digitally converted and received, and when fuel is injected from the oil port, information on the amount of fuel newly injected is corrected based on the temperature information of the temperature sensor at the time of real-time measurement and stored in the fuel tank A vehicle instrument unit for calculating the corrected total fuel amount by summing the corrected remaining fuel amount based on the temperature and providing the corrected total fuel amount information and the fuel temperature information through the display unit, The amount of residual fuel stored in the fuel tank of the vehicle and the fuel tank of the vehicle are measured and converted into digital signals and transmitted to the vehicle instrument unit And a fuel tank measuring device terminal The.
The fuel tank real-time temperature and fuel measurement system of the vehicle of the present invention configured as described above has the effect of accurately calculating the total fuel amount due to the temperature correction when the residual fuel exists in the fuel tank and the fuel is newly injected in the gas station . In addition, the present invention configured as described above has a sample flow rate portion in which the fuel can be stabilized, so that the fuel temperature can be measured in a state where the fuel is stabilized. Therefore, an accurate fuel temperature can be obtained. The information can be accurately corrected according to the reference temperature.
1 is a block diagram of a conventional fuel quantity measurement system,
2 is a fuel tank real time temperature and fuel measurement system configuration diagram of the vehicle of the present invention,
3 is a detailed configuration diagram of a vehicle instrument applied to the present invention,
Fig. 4 is a block diagram of a sample flow rate portion applied to the present invention
5 is a temperature correction flow rate table DB.
[0031] A description will be given of a system for measuring the oil supply temperature and the oil supply amount during operation of the vehicle according to the present invention with reference to FIGS. 2 to 5. FIG.
2 is a fuel tank real time temperature and fuel measurement system configuration diagram of the vehicle of the present invention. 2, the fuel tank real-time temperature and fuel measurement system of the vehicle of the present invention receives and stores temperature information from a temperature sensor installed in a vehicle and provided in a sample flow rate section of a main pipe, And the remaining fuel amount information is received and stored through the short distance communication from the fuel pump terminal. The fuel amount and the residual fuel amount are corrected to 15 ° C based on the temperature information, A
3 is a detailed configuration diagram of a vehicle instrument applied to the present invention. 3, the
4 is a block diagram of a sample flow rate portion applied to the present invention. 4, the sample
5 is a temperature correction flow rate table DB. In FIG. 5, the temperature correction flow rate table DB shows the fuel temperature at the time of volume measurement, the density at 15 DEG C, and the volume conversion coefficient (correction coefficient) as samples. In this case, the density may be given from a company that supplies fuel, and the density information may be input to the gas pump terminal, and the gas pump terminal may transmit the gasoline amount information to the vehicle instrument unit to be used for temperature correction.
100: vehicle instrument part, 110: control part,
120: display section, 130: temperature correction flow rate table DB,
140: temperature correction section, 160: short-range communication module,
200: temperature sensor, 300: gas pump terminal,
400: Lubrication pump unit
Claims (4)
The fuel tank real time temperature and fuel measurement system of the vehicle includes:
Receives and stores temperature information from a temperature sensor installed in a sample flow unit of a fuel supply pipe, receives and stores residual fuel amount and residual temperature information from a fuel tank measuring apparatus terminal, A vehicle instrument unit 100 for calculating and storing the corrected total fuel amount of the fuel tank by correcting the fuel injection amount and the residual fuel amount based on the temperature information and the temperature information, ;
A temperature sensor (200) installed in a sample flow rate part installed on one side of the main oil pipe and converting the temperature information into a digital signal and transmitting it to a vehicle instrument part;
A gas pump terminal (300) for injecting gas into the vehicle, expressing the amount of gas injected accurately, and transmitting the gas to the vehicle instrument unit by means of a short distance communication module;
And a fuel tank measuring apparatus terminal (550) for measuring the residual fuel amount and residual temperature currently stored in the fuel tank in the vehicle and transmitting the measured residual fuel amount and residual temperature to the vehicle instrument unit.
The vehicle-
Receives and stores the temperature information from the temperature sensor of the sample flow rate unit installed in the vehicle and installed in the vehicle fueling pipe, receives and stores the fuel oil amount information from the fuel pump terminal, receives the residual fuel amount and residual temperature information from the fuel tank measuring apparatus terminal Temperature information, fuel tank residual fuel amount, residual fuel temperature information, and corrected total fuel amount on the display unit and controls the display unit to display the received temperature information, residual temperature information, received fuel amount information, A controller 110 for controlling the temperature corrector to calculate a total fuel amount through temperature correction using the temperature correction flow rate table DB based on the residual fuel amount information;
A short range communication module 160 for receiving the amount of fuel supplied from the fuel pump terminal and transmitting the amount of fuel to the controller;
A transmission / reception module (170) for receiving residual fuel amount information and residual temperature information from the fuel tank measurement device terminal;
A temperature correction flow rate table DB 130 storing correction coefficients according to temperature and density with respect to gasoline, case, and the like;
A temperature correction unit 140 for storing the total fuel amount in the memory based on the temperature correction flow rate table DB when the temperature information, the residual temperature information, the main flow rate information, and the residual fuel information are received;
A memory 150 for storing actual temperature information, actual main flow amount information, fuel tank residual fuel amount information and residual temperature information received from the temperature sensor, the fuel pump terminal, and the fuel tank measuring device, ;
And the temperature information received from the temperature sensor, the fuel amount information received from the fuel pump terminal, the residual fuel amount information received from the fuel tank measuring apparatus terminal, the residual temperature information, and the total fuel amount information And a display unit (120) having a plurality of fuel cells.
The sample-
A chevron shaped inclined portion 253 which is formed in the gas supply pipe 251 to connect the vehicle gas supply port and the gasoline tank and has a conical shape formed inside the gas supply pipe and allows fuel to be injected to flow into the body portion easily;
An inlet pipe (255) connected to the hatched portion and configured to be installed at one side of the lower portion of the body portion so that fuel injected into the body portion and fuel flowing into the body portion (259) gradually rises in the body portion;
And an outlet for allowing the fuel in the body portion to flow out slowly and having a smaller inner diameter at a ratio of 1/8 to 1/10 as compared with the inlet pipe and being installed on the opposite side of the lower inlet pipe on the inside of the body, And a pipe (257).
The fuel tank real time temperature and fuel measurement system of the vehicle includes:
Receives and stores the temperature information from the temperature sensor of the sample flow rate unit installed in the vehicle and installed in the vehicle fueling pipe, receives and stores the fuel oil amount information from the fuel pump terminal, receives the residual fuel amount and residual temperature information from the fuel tank measuring apparatus terminal Temperature information, fuel tank residual fuel amount, residual fuel temperature information, and corrected total fuel amount on the display unit and controls the display unit to display the received temperature information, residual temperature information, received fuel amount information, A controller 110 for controlling the temperature corrector to calculate the total fuel amount through temperature correction using the temperature correction flow rate table DB based on the residual fuel amount information, From the local communication module 160 and the fuel tank measuring device terminal, A transmission / reception module 170 for receiving the fuel amount information and the residual temperature information, a temperature correction flow rate table DB 130 storing correction coefficients according to the temperature and density of gasoline and the case, temperature information, residual temperature information, A temperature correction unit 140 for storing the total fuel amount on the basis of the temperature correction flow rate table DB when the information and the residual fuel information are received and storing the total amount of fuel in a memory, A memory 150 for storing actual temperature information, actual main flow rate information, fuel tank residual fuel amount information, residual temperature information and total fuel amount information determined by the temperature correction unit, and temperature information received from the temperature sensor, Information on gasoline amount and information on the residual fuel amount received from the fuel tank measuring device terminal and the residual temperature And flow rate correcting section can express the property information of the total fuel quantity information from a vehicle instrument section 100 comprised of the display unit 120 in the;
And is formed in a gas supply pipe (251) connecting the vehicle fuel supply port and the fuel supply tank, and has a conical shape formed inside the gas supply pipe, and has a chevron shaped cheek part (253) for allowing fuel to be injected into the body easily, And the inflow pipe 255 is formed at one side of the lower portion of the body portion so that the fluid flowing into the body portion and the fluid introduced into the body portion 259 gradually rises in the body portion. And an outlet pipe (257) for allowing the fuel in the body portion to flow out slowly and having a smaller inner diameter at a ratio of 1/10 to the fuel inlet (257) A temperature sensor 200 installed to generate temperature information, convert the digital signal into a digital signal, and transmit the digital signal to a vehicle instrument;
A gas pump terminal (300) for injecting gas into the vehicle, expressing the amount of gas injected accurately, and transmitting the gas to the vehicle instrument unit by means of a short distance communication module;
And a fuel tank measuring apparatus terminal (550) for measuring the residual fuel amount and residual temperature currently stored in the fuel tank in the vehicle and transmitting the measured residual fuel amount and residual temperature to the vehicle instrument unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020150047414A KR101639033B1 (en) | 2015-04-03 | 2015-04-03 | Temperature and Volume Measuring System of Fuel Tank at Vehicle by using Gas Pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020150047414A KR101639033B1 (en) | 2015-04-03 | 2015-04-03 | Temperature and Volume Measuring System of Fuel Tank at Vehicle by using Gas Pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR101639033B1 true KR101639033B1 (en) | 2016-07-12 |
Family
ID=56505399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020150047414A KR101639033B1 (en) | 2015-04-03 | 2015-04-03 | Temperature and Volume Measuring System of Fuel Tank at Vehicle by using Gas Pump |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR101639033B1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108458809A (en) * | 2017-02-21 | 2018-08-28 | 三星电机株式会社 | Device and method for measuring the water temperature in pipeline |
| CN109579937A (en) * | 2018-12-28 | 2019-04-05 | 中国工程物理研究院化工材料研究所 | A kind of warm isostatic pressing machine working cylinder liquid level detection system of realization and detection method |
| CN114705250A (en) * | 2022-04-14 | 2022-07-05 | 大连理工大学 | Reservoir water level and water temperature distributed monitoring device and method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003329505A (en) * | 2002-05-14 | 2003-11-19 | Denso Corp | Remaining fuel amount display device for vehicle |
| KR20070047524A (en) * | 2005-11-02 | 2007-05-07 | 김황섭 | Apparatus for calculating fuel volume in the fuel tank |
| KR20100122302A (en) * | 2009-05-12 | 2010-11-22 | 충주대학교 산학협력단 | Apparatus for measuring capacity of fuel injection |
| KR101479072B1 (en) * | 2013-10-21 | 2015-01-07 | 신흥콘트롤(주) | Fuel level checking apparatus of automobile fuel tank |
-
2015
- 2015-04-03 KR KR1020150047414A patent/KR101639033B1/en active IP Right Grant
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003329505A (en) * | 2002-05-14 | 2003-11-19 | Denso Corp | Remaining fuel amount display device for vehicle |
| KR20070047524A (en) * | 2005-11-02 | 2007-05-07 | 김황섭 | Apparatus for calculating fuel volume in the fuel tank |
| KR20100122302A (en) * | 2009-05-12 | 2010-11-22 | 충주대학교 산학협력단 | Apparatus for measuring capacity of fuel injection |
| KR101479072B1 (en) * | 2013-10-21 | 2015-01-07 | 신흥콘트롤(주) | Fuel level checking apparatus of automobile fuel tank |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108458809A (en) * | 2017-02-21 | 2018-08-28 | 三星电机株式会社 | Device and method for measuring the water temperature in pipeline |
| CN109579937A (en) * | 2018-12-28 | 2019-04-05 | 中国工程物理研究院化工材料研究所 | A kind of warm isostatic pressing machine working cylinder liquid level detection system of realization and detection method |
| CN114705250A (en) * | 2022-04-14 | 2022-07-05 | 大连理工大学 | Reservoir water level and water temperature distributed monitoring device and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2358583C (en) | A method for filling a vehicle fuel tank with gas | |
| EP2738443B1 (en) | Metering system and method for cryogenic liquids | |
| US10371319B2 (en) | Liquid dispenser | |
| US20140137632A1 (en) | Device for checking the calibration of catching instruments measuring rainfall intensity | |
| KR101639033B1 (en) | Temperature and Volume Measuring System of Fuel Tank at Vehicle by using Gas Pump | |
| CN108700445A (en) | The measuring device that oil plant for monitoring large ship adds | |
| CN202522295U (en) | System for calibrating turbine flow meter under condition of large flow of low-temperature medium | |
| CN104359521A (en) | Large-capacity storage tank volume detection system and calibration method | |
| CN108627222A (en) | A kind of oil meter nucleus correcting system | |
| US9261396B2 (en) | System and method for monitoring liquid level in containers/reservoirs | |
| CN204330095U (en) | Supercritical CO 2flowmeter prover | |
| US20170336233A1 (en) | Method for determining a gas amount and device for carrying out said method | |
| CN102253431A (en) | Rainfall calibrator and calibration method | |
| CN106248160A (en) | The detecting system of fuel flowmeter and detection method | |
| KR101663541B1 (en) | Temperature and Revised Volume Measuring System of Fuel Tank at Vehicle | |
| AU2009339711B2 (en) | Well gauging system and method | |
| CN216746365U (en) | Hydrogenation machine metering and calibrating device | |
| WO2011112110A2 (en) | Module for filling bottles with liquid propane-butane mixture and compounds and process of handling | |
| CN104568082A (en) | Supercritical CO2 flowmeter calibration device and calibration method thereof | |
| CN204007805U (en) | The online caliberating device of a kind of LNG filling machine | |
| CN102435262A (en) | Device and method for measuring relationship among fuel tank volume, fuel level and output resistance of oil pump | |
| AU2001290187B2 (en) | Method and apparatus for determining the volume of liquid in a reservoir | |
| CN201041506Y (en) | Ground buried oil tank test device | |
| CN213021796U (en) | Be used for car oil feeding system oil pump to mark level sensor | |
| WO2009106902A1 (en) | Liquid gauge apparatus and method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| E701 | Decision to grant or registration of patent right | ||
| GRNT | Written decision to grant | ||
| FPAY | Annual fee payment |
Payment date: 20190722 Year of fee payment: 4 |