WO2004076844A1 - 液体燃料量計測装置、及び液体燃料量計測方法 - Google Patents
液体燃料量計測装置、及び液体燃料量計測方法 Download PDFInfo
- Publication number
- WO2004076844A1 WO2004076844A1 PCT/JP2003/015600 JP0315600W WO2004076844A1 WO 2004076844 A1 WO2004076844 A1 WO 2004076844A1 JP 0315600 W JP0315600 W JP 0315600W WO 2004076844 A1 WO2004076844 A1 WO 2004076844A1
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- Prior art keywords
- container
- liquid fuel
- air
- volume
- conduit
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D33/00—Controlling delivery of fuel or combustion-air, not otherwise provided for
- F02D33/003—Controlling the feeding of liquid fuel from storage containers to carburettors or fuel-injection apparatus ; Failure or leakage prevention; Diagnosis or detection of failure; Arrangement of sensors in the fuel system; Electric wiring; Electrostatic discharge
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/0047—Layout or arrangement of systems for feeding fuel
- F02M37/007—Layout or arrangement of systems for feeding fuel characterised by its use in vehicles, in stationary plants or in small engines, e.g. hand held tools
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F17/00—Methods or apparatus for determining the capacity of containers or cavities, or the volume of solid bodies
-
- 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
- G01F22/02—Methods or apparatus for measuring volume of fluids or fluent solid material, not otherwise provided for involving measurement of pressure
-
- 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
- G01F23/14—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 measurement of pressure
-
- 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
- G01F23/30—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 floats
- G01F23/32—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 floats using rotatable arms or other pivotable transmission elements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/0076—Details of the fuel feeding system related to the fuel tank
- F02M37/0088—Multiple separate fuel tanks or tanks being at least partially partitioned
Definitions
- the present invention relates to a device for measuring the amount of liquid fuel in a container, and a method for measuring the amount of liquid fuel using the device.
- a work machine typified by a hydraulic excavator generally includes a lower traveling body for performing movement and an upper revolving superstructure for performing work.
- a traveling device such as a tire or a crawler is mainly disposed on the lower traveling body, whereas a working arm is mounted on the upper revolving body, the engine and the counter.
- a technique has been disclosed in which the fuel tank is disposed on the lower traveling structure, and the arrangement of various devices provided on the upper revolving structure has a margin to make the upper revolving structure compact.
- a fuel tank and a fuel feed pump are provided on the lower traveling body, and fuel is conveyed to the engine of the upper revolving body via the revolving joint, whereby the fuel tank is discharged from the upper revolving body.
- the turning radius of the upper-part turning body can be reduced.
- the height difference between the head of the fuel tank and the engine that is, the arrangement of the fuel tank and the engine becomes large, so that the fuel in the fuel feed passage connecting the fuel tank and the engine descends to the fuel tank.
- running out of fuel may occur.
- a fuel feed pump and a check valve are arranged in parallel in the fuel feed passage connecting the engine equipped with the fuel pump and the fuel tank to prevent the fuel from falling into the fuel tank.
- the technology is also disclosed (see, for example, Utility Model Registration No. 2516601). According to this technology, when there is no abnormality in the fuel supply system, the fuel feed pump does not operate, the fuel is supplied to the engine through the check valve by the fuel pump attached to the engine, and the fuel is supplied to the check valve.
- the present invention has been made in view of such a problem, and is intended to accurately measure liquid fuel stored in a container, and a liquid fuel amount measuring device and a liquid fuel amount measuring method using the device. The purpose is to provide. Disclosure of the invention
- the gist of the present invention is to provide a first container for storing a liquid fuel therein, Pressurizing means for supplying air and increasing the air pressure in the first container, air pressure measuring means for measuring the air pressure in the first container, and a second means for communicating and connecting the first container and the pressurizing means.
- Transfer means for transferring to the second container via a pipe, detection means for detecting a decrease in liquid fuel in the second container, and additional information based on information from the air pressure measurement means and the detection means.
- Control means for selecting either the pressure mode or the refueling mode to control the transfer means and the pressurizing means; and the first pressurizing means through the first pipe by the pressurizing means.
- Air volume measurement means for measuring the volume of air supplied into the container; and air measured by the air volume measurement means in the pressurization mode. Calculating the volume of the liquid fuel in the first container from the volume of the liquid fuel and the amount of change in the air pressure calculated from the air pressure in the first container measured by the air pressure measuring means. Calculating means for calculating the volume of the liquid fuel in the first container from the number of times the liquid fuel has been transferred from the container to the second container. Range 1).
- another gist of the present invention is to provide a first container for storing a liquid fuel therein, a pressurizing means for supplying air into the first container to increase the air pressure in the first container, and A first conduit for communicating and connecting the first container and the pressurizing means; a second container connected to the first container; and a second conduit for communicating and connecting the first container and the second container. And a transfer means for transferring the liquid fuel in the first container to the second container via the second conduit, wherein when the air pressure in the first container is lower than a predetermined pressure, the pressurization is performed.
- the volume of liquid fuel in the first container is calculated from the volume of air and the amount of change in air pressure, and when the volume of liquid fuel in the second container is less than a predetermined amount,
- the transfer means transfers a predetermined amount of liquid fuel from the first container to the second container via the second conduit, and based on the number of times of transfer of the liquid fuel, transfers the liquid fuel in the first container.
- a liquid fuel measuring method characterized by calculating a volume of a liquid fuel (claim 8).
- liquid fuel amount measuring device (Claim 1) and the liquid fuel amount measuring method (Claim 8) of the present invention regardless of the shape and inclination of the first container, The amount of liquid fuel in the vessel can be accurately grasped, and the amount of liquid fuel supplied from the first container to the second container can be accurately measured.
- another gist of the present invention is to provide a first container for storing a liquid fuel therein, a pressurizing means for supplying air into the first container to increase the air pressure in the first container, and Pneumatic pressure measuring means for measuring the air pressure in the first container; a first conduit for connecting and connecting the first container and the pressurizing means; and a first conduit through the first conduit by the pressurizing means.
- Air volume measuring means for measuring the volume of air supplied into the first container; and air volume measured by the air volume measuring device and air pressure in the first container measured by the air pressure measuring device.
- Calculating means for calculating the volume of the liquid fuel in the first container from the amount of change in the air pressure calculated from the calculated amount of the air pressure. ).
- another gist of the present invention is to provide a first container for storing a liquid fuel therein, a pressurizing means for supplying air into the first container to increase the air pressure in the first container, and A first conduit for communicating and connecting the first container and the pressurizing means, and supplying air into the first container through the first conduit by the pressurizing means; Detecting or calculating the volume of air and the amount of change in air pressure in the first container due to the supply of this air, and calculating the volume of liquid fuel in the first container from the volume of air and the amount of change in air pressure.
- the present invention resides in a method for measuring the amount of liquid fuel, which is characterized by performing a calculation (claim 9).
- liquid fuel amount measuring device (Claim 2) and the liquid fuel amount measuring method (Claim 9) of the present invention regardless of the shape and inclination of the first container, The amount of liquid fuel in the vessel can be accurately grasped.
- another gist of the present invention is to provide a first container for storing a liquid fuel therein, a second container connected to the first container, and a communication connection between the first container and the second container.
- Calculating means for calculating the amount of liquid fuel.
- another gist of the present invention is to provide a first container for storing a liquid fuel therein, a second container connected to the first container, and a communication connection between the first container and the second container.
- the liquid is supplied from the first container to the second container.
- the liquid fuel amount can be accurately measured.
- the air volume measuring means stores the correspondence relationship between the pressurizing pressure and the supply volume to the first container, and the pressurizing measuring means for measuring the pressurizing pressure.
- the liquid fuel amount measuring device according to claim 3, characterized by comprising a storage means (claim 4).
- the volume of air in the first container can be easily measured.
- Another aspect of the present invention resides in the liquid fuel amount measuring device according to claim 4, wherein the air pressure measuring unit also serves as the pressurizing measuring unit. According to such a liquid fuel amount measuring device of the present invention (claim 5), the configuration can be simplified.
- another gist of the present invention is to provide a first pipeline valve for regulating the flow in the first pipeline, and a second pipeline valve for regulating the flow in the second pipeline.
- a portion of the first conduit closer to the first container than the first conduit valve and a portion of the second conduit closer to the first container than the second conduit valve are gathered together.
- the first pipe line and the second pipe line are assembled into one, and the first pipe valve and the second pipe
- the first pipe valve and the second pipe By installing a line valve and controlling the opening and closing of each, the second line on the first container side from the connection between the first line and the second line can also be used as the fuel transfer line and the air supply line.
- the piping structure Can be simplified. Also, since the pressure in the pipeline does not decrease while fuel is filled in the pipeline except during pressurization by the pressurizing means, it is possible to prevent the generation of rust in the pipeline.
- the gist of the present invention is to provide a work machine having a lower traveling body and an upper revolving body that is pivotally attached to the lower traveling body via a connecting portion, wherein the first container is provided on the lower traveling body with a main fuel tank. 7.
- the working machine provided with the liquid fuel amount measuring device according to claim 6, wherein the second container is provided as an auxiliary fuel tank in the upper swing body. Claim 7).
- FIG. 1 is an overall configuration diagram schematically showing a configuration of a working machine including a liquid fuel amount measuring device according to an embodiment of the present invention.
- FIG. 2 is a control flowchart showing fuel supply and fuel amount measurement control of the liquid fuel amount measurement device according to one embodiment of the present invention.
- FIG. 3 is a configuration diagram of a specific liquid fuel amount measurement device according to a modification of the embodiment of the present invention.
- FIG. 4 is a configuration diagram of a specific liquid fuel amount measurement device according to a modification of the embodiment of the present invention.
- FIG. 5 is a side view of a working machine including a liquid fuel amount measuring device according to one embodiment of the present invention.
- FIG. 6 is a map showing the discharge amount performance of an air pump (pressurizing means) of the liquid fuel amount measuring device according to one embodiment of the present invention.
- the working machine is attached to a lower traveling body 30 and to be pivotable on the lower traveling body 30 via a connecting portion (swivel) 10.
- the hydraulic pump 19 is driven by an engine 2 provided on the upper revolving body 20, and the driving oil is pressurized by the hydraulic pump 19.
- the entire work machine is driven.
- the upper revolving superstructure 20 is further provided with a work arm, a driver's cab equipped with a control device for controlling various devices, a work arm, an actuator, a counterweight, and the like.
- the present liquid fuel amount measuring device is attached to a fuel supply device that supplies fuel from the main tank (first container) 3 to the engine 2 via the sub tank (second container) 4. Measure the fuel amount in sub tank 4.
- the main tank 3 is configured as a main tank (main fuel tank) for storing fuel for the engine 2, and is provided on the lower traveling body 30. Further, the main tank 3 is air-tight and liquid-tight, so that leakage of internal fuel and air and inflow of rainwater from the outside are prevented.
- the sub-tank 4 is an auxiliary fuel tank capable of storing a certain amount of fuel for driving the engine 2, is provided in the upper revolving unit 20, and communicates with the main tank 3 via the second pipe 12. It is connected. Then, the fuel stored in the main tank 3 is transferred to the sub-tank 4 via the second pipe 12 and temporarily stored in the sub-tank 4 in a fixed amount unit. The fuel in the sub tank 4 is supplied to the engine 2 in a stable manner.
- the sub-tank 4 detects the amount of fuel stored in the sub-tank 4 based on the position of the sensor tip (float) floating on the fuel level, and sends a detection signal to the control device (control means) 11.
- a float sensor (detection means) 9 for outputting is provided.
- the upper revolving unit 20 is provided with an air pump 6 for feeding air into the main tank 3, and branches off from the second pipe 12 upstream of the second pipe valve 14 (on the side of the main tank 3).
- the first tank 13 is connected to the main tank 3 via the connected first pipe 13.
- a second pipeline valve (open / close valve) 14 is provided in the second pipeline 12, and the second pipeline valve 14 is opened.
- the first pipeline 13 is provided with a first pipeline valve (opening / closing valve) 15, and by opening the first pipeline valve 15, the air pump (pressurizing means) 6 is switched to the main pipeline.
- the air pump (pressurizing means) 6 is switched to the main pipeline.
- the supply of air is stopped, and communication between the two is cut off to prevent fuel from flowing out of the main tank 3 to the air pump 6. .
- Opening / closing control of the first pipe valve 15 and the second pipe valve 14 is performed by a control device 11 described later, and is normally closed.
- the air pump 6 sends air to the main tank 3 through these first and second pipes, so that air is accumulated in the main tank 3 so that the inside of the main tank 3 is pressurized. Has become.
- the connection between the first pipe 13 and the second pipe 12 is provided on the upper-part turning body 20, and the connecting pipe 10 has a second pipe upstream of the connection. 1 and 2 are provided. Thereby, even in the present configuration in which the air pump 6 is provided in the upper revolving structure 20, only one pipe is disposed in the connecting portion 10 and the structure in the connecting portion 10 is simplified. .
- a pressure sensor (pneumatic pressure measuring means) 5 is provided in the first pipe 13 to detect a pressure in the first pipe 13 and indirectly detect a pressure state in the main tank 3. It is like that.
- the control device 11 controls the operation of the air pump 6, the first pipe valve 15, and the second pipe valve 14, and responds to input signals from the float sensor 9 and the pressure sensor 5.
- the control device 11 controls the operation of the air pump 6 ⁇ stopping and opening and closing the first pipe valve 15 and the second pipe valve 14, the direction and amount of inflow of air and fuel are controlled.
- the amount of fuel transfer from tank 3 to sub-tank 4 can be adjusted. First, when the pressure in the main tank 3 detected by the pressure sensor 5 is lower than a predetermined value, the air pump 6 is operated and the first pipe valve 15 is opened to pressurize the inside of the main tank 3. .
- the control means 11 is provided with a calculation means 7, and the calculation means 7 calculates the amount of fuel in the main tank 3. You.
- the control device 11 opens the second pipe valve 14 in accordance with a signal generated by the float sensor 9.
- the fuel in the main tank 3 is transferred to the sub tank 4 via the second pipe 12 and the second pipe valve 14.
- the control device 11 closes the second pipe valve 14 in accordance with a signal generated by the float sensor 9.
- control performed by the liquid fuel amount measurement device will be specifically described with reference to a control flow chart shown in FIG. Since this process is dependent on a main flow (not shown) processed inside the control device 11, the process is repeated as appropriate. The following control is performed by the control unit 11.
- step S 1 1 when the pressure in this case in the main evening tank 3 detected by the pressure sensor 5 and P i (atm), the P i is a first specified pressure P m i n (predetermined pressure) It is determined whether this is the case. If the pressure is equal to or higher than the first specified pressure P min , the flow proceeds to the flow of step S 120 or lower, that is, the flow for controlling the transfer of fuel from the main tank 3 to the sub tank 4 (refueling mode). If 1 is less than the first specified pressure P min , the flow proceeds to the flow following step S 210, that is, the flow in which the pressure in the main tank 3 is increased by the air pump 6 (pressurization mode).
- the first specified pressure P min is set as a value at which the fuel in the main tank 3 can be automatically supplied by the pressure difference between the main tank 3 and the sub tank 4.
- step S210 the air pump 6 is operated. Then, in the next step S220, the first pipeline valve 15 is opened. By opening the first pipe valve 15, the air pressurized by the air pump 6 is supplied to the main tank 3 through the first pipe 13.
- Step S 2 3 when the pressure in the main evening tank 3 detected by the time the pressure sensor 5 and P 2 (atm), the P 2 is a second specified pressure P ma x (Tokoro (Constant pressure) is determined. Proceeds to Step S 2 4 0 if P 2 has decreased to or higher than the second specified pressure P max, in the case of less than the second specified pressure P max this step until the more second specified pressure P max Is to repeat.
- the second specified pressure Pmax defined in this step is set as a value larger than the first specified pressure Pmin specified in step S110 ( Pmin
- step S250 the air pump 6 is stopped.
- the control device 11 calculates the volume (1 atm, that is, the volume under atmospheric pressure) of the air supplied into the main tank 3 from the start of the operation of the air pump 6 to the stop thereof, V (1). calculate.
- the volume of the air supplied into the main tank 3 is equal to the volume (discharge amount) of the air discharged from the air pump 6, and as shown in the discharge amount performance table of the air pump 6 in FIG.
- Such calculation of the discharge amount is performed at a predetermined cycle (for example, 0.3 second), and the discharge amount from the start of the operation of the air pump 6 to the stop thereof is integrated, so that the supply amount into the main tank 3 is obtained.
- the volume of air is determined.
- a correspondence map (storage means) between the pressure sensor 5 and the discharge pressure of the air pump 6 (that is, the pressure in the main tank 3) and the discharge amount of the air pump 6 is determined by the pressurizing means.
- This constitutes an air volume measuring means for measuring (or determining) the volume of air supplied to the first container.
- the pressure sensor 5 also functions as a pressure measuring means for measuring the discharge pressure (pressurized pressure) of the air pump 6.
- the air pressure measuring means and the pressure measuring means may be provided separately without being shared. For example, it is conceivable to provide a pressure sensor as pressure measurement means in the first pipe 13 separately from the pressure sensor 5 as air pressure measurement means.
- the air volume measuring means includes a pressure sensor 5 for measuring the pressurized pressure, and a corresponding map for storing the correspondence between the pressurized pressure and the supply volume to the main tank 3.
- the volume of air supplied to the main tank 3 is A flow meter capable of indirect measurement may be provided in the first conduit 13.
- the pressure detection cycle of the pressure sensor 5 may be made shorter (for example, 0.1 second), and the volume of supplied air may be obtained more accurately.
- step S260 the fuel amount in the main tank 3 is calculated.
- the calculation of the fuel amount in this step is mainly performed by the calculating means 7. Since the volume of the liquid fuel in the main tank 3 and the volume of the main tank 3 itself do not change, the volume of the air in the main tank 3 is set to V a (1), and the change in the temperature of the air can be considered to be negligible. For example, the following equation is established from the gas state equation.
- v a is given by the following equation.
- V a V! ⁇ (p 2 -p
- V t is always constant, so that the volume of the main tank 3 minus the volume V a of this air is The fuel volume (volume) at that time is V f (1).
- V f V t -V a
- the fuel amount in the main tank 3 is measured from the volume of the air supplied into the main tank 3 by the air pump 6 and the amount of pressure change in the main tank 3. .
- step S120 or lower that is, a flow for controlling the transfer of fuel from the main tank 3 to the sub tank 4.
- step S12 When the process proceeds to the flow for transferring fuel from the main tank 3 to the sub tank 4, or when the calculation of Vf is completed after the pressure in the main tank 3 is increased, that is, in step S12. in 0, when the amount of fuel in the sub tank 4 and V fs, V iS whether less than a first specified amount V min is determined.
- First specified amount V mi in the case of less than n, the process proceeds to step S 1 3 0, in the case of more than the first prescribed amount V min is being consumed fuel in the sub tank 4 first prescribed amount V min Repeat this step until less than.
- the first specified amount V min used in the determination of the flow is the fuel in the sub-tank 4 that can supply fuel without hindering the driving of the engine 2.
- This step represents the target lower limit of the fuel level.This step is repeated until the fuel level falls below this target lower limit.If the fuel level falls below this target lower limit, the process proceeds to step S130. I'm familiar.
- step S130 the second pipeline valve 14 is controlled to open.
- the fuel is supplied from the main tank 3 by opening the second pipe valve 14.
- the fuel automatically flows to the sub tank 4 side, and the fuel is transferred to the sub tank 4. Then, go to step S140.
- step S 140 the fuel amount in the subtank 4 if the second prescribed amount V max or not is determined.
- V max proceeds to step S 1 5 0, if less than the second prescribed amount V max repeats steps Madeko be more than a second specified amount V ma x .
- the second prescribed amount V max used in this flow it is possible to transfer fuel without hindrance to the driving of the E down Jin 2 is a value representing a target upper limit value of the fuel level in the subtank 4, fuel This step is repeated until the liquid level exceeds the target upper limit, and when the fuel liquid level exceeds the target upper limit, the process proceeds to step S150. Then, in step S150, the second pipeline valve 14 is controlled to be closed, and the process proceeds to step S160.
- Step S160 is a flow for calculating the amount of fuel in the main tank 3 after transferring the fuel from the main tank 3 to the sub tank 4.
- the calculation of the fuel amount in this step is mainly performed by the calculating means 7.
- the number of fuel supplies N transferred from the main tank 3 to the sub-tank 4 is counted, and the fuel supply quantity per transfer is multiplied by the number of fuel supplies N to transfer the fuel from the main tank 3 to the sub-tank 4. Calculate the total amount of supplied fuel.
- V n is given by the following equation.
- V n V max -V min
- step S 2 6 0 the fuel quantity V f of the main tank 3, by subtracting the V n just fueling number N min, a main tank in this step Calculate the fuel amount V f ′ in 3. And this file End the row.
- V f ' V f -NV n
- the control device 11 starts the air pump 6 and performs control so as to open the first pipe valve 15. Air pressurized by air pump 6 is supplied to the main tank 3, the pressure in the main tank 3 is P 2 or more second specified pressure P max, the controller 1 1 Part by the air pump 6 is stopped 1 Close the pipe valve 15. Since the amount of liquid fuel in the main tank 3 and the volume of the main tank 3 itself do not change, the volume V a of air in the main tank 3 is given by Equation 2, and the current fuel amount V f in the main tank 3 is , Given by Equation 3.
- the air to the main tank 3 is supplied by the air pump 6, and a pressure change amount in volume and the main tank 3 of the supplied air, the main tank 3 The fuel amount can be accurately measured.
- the control device 11 closes the second pipe valve 14 and moves the sub tank from the main tank 3. Stop fuel transfer to 4.
- the threshold for determining the level of the fuel level in the sub tank 4 detected by the float sensor 9 is always constant, the amount of fuel supplied from the main tank 3 to the sub tank 4 at one time is always constant. And the quantity is given by Equation 4.
- the control device 1 1 Counts the fuel supply number of times N which is transferred from the main tank 3 to the sub tank 4, supply fuel supplied to the main tank 3 Karratha Butanku 4 multiplied by the fuel supply number N to the fuel supply amount V n per one time Calculate the amount. Then, by subtracting the supplied fuel amount from the fuel amount Vf in the main tank 3 in accordance with Equation 5, the fuel amount Vf ′ in the main tank 3 after the supply can be accurately calculated.
- the pressure in the main tank 3 when the pressure in the main tank 3 is lower than the specified value, the pressure in the main tank 3 is increased to calculate the volume of the pressurized air.
- the fuel amount in the tank 3 can be calculated, and when the pressure in the main tank 3 is equal to or higher than the specified value, the fuel amount supplied from the main tank 3 to the sub tank 4 is calculated, and the fuel amount in the main tank 3 is calculated. Can be calculated.
- the calculated fuel amount is accurate regardless of the shape and inclination of the main tank 3.
- the main tank 3 and the sub tank 4 are connected to each other by the second pipe, and the main tank 3 and the sub tank 4 are connected. Regardless of the distance, the amount of fuel in each tank can be accurately grasped, and the fuel can be transferred reliably. Further, since the main tank 3 and the air pump 6 are connected to each other by the first pipe, the pressurization in the main tank 3 can be appropriately performed regardless of the distance between the main tank 3 and the air pump 6.
- first pipe 13 and the second pipe 12 are connected, and the first pipe valve 15 and the second pipe valve 14 are provided to control the opening and closing of each pipe.
- the second pipe on the main tank 3 side from the connection between the first pipe 13 and the second pipe 12 can also be used as the fuel transfer path and the air supply path, and the piping structure can be simplified. Also, except when pressurized by the air pump 6, since the pressure in the pipeline does not decrease while the fuel is filled in the pipeline, rust in the pipeline can be prevented.
- the upper revolving structure 20 can be designed to be small, and the turning radius of the upper revolving structure 20 can be reduced.
- the energy required for turning can be reduced.
- the center of gravity of the entire work machine can be lowered, and the vehicle body can be stabilized. Can be.
- the flow controlled by the control device 11 includes a refueling mode and a pressurization mode, and the control device 11 selects one of the modes and selects the first pipe valve 1 5.
- the second pipe valve 14 and the air pump 6 are controlled, but a configuration having only one of the modes is also conceivable.
- the liquid fuel amount measurement device shown in FIG. 3 includes only the pressurization mode in the above-described embodiment, and has a configuration specialized for its function.
- the same components as those in the embodiment of FIG. 1 are denoted by the same reference numerals.
- the liquid fuel amount measuring device shown in FIG. 3 is composed of a main tank (first container) 3 for storing liquid fuel therein, and an air pump (supplying air into the main tank 3 to increase the air pressure in the main tank 3).
- Pressurizing means 6 a pressure sensor (pneumatic pressure measuring means) 5 for measuring the air pressure in the main tank 3, a first pipe 13 for communicating and connecting the main tank 3 and the air pump 6, And a calculation means 7 for calculating the volume of the liquid fuel.
- the pressure sensor 5 is provided on the wall surface of the main tank 3 so that the pressure state of air in the main tank 3 can be directly detected. As in the above-described embodiment, the pressure sensor 5 is provided in the first pipe 13 so that the pressure state in the main tank 3 is indirectly detected from the pressure in the first pipe 13. You may comprise.
- the pressure sensor 5 also serves as an air volume measuring means for measuring the volume of air supplied into the main tank 3 via the first pipe 13 by the air pump 6, and the arithmetic means 7
- the volume of the liquid fuel in the main tank 3 is calculated from the volume of the air measured by the pressure sensor 5 as the air volume measuring means and the amount of change in the air pressure calculated from the air pressure in the main tank 3. Is configured.
- the volume of air supplied into the main tank 3 by the air pump 6 is Since the amount of air discharged from the air pump 6 is equal to the amount of air discharged from the air pump 6 and the amount of air discharged from the air pump 6 has a corresponding relationship with the discharge pressure of the air pump 6, the map shown in FIG. Thus, the volume of air supplied into the main tank 3 can be calculated. Then, the fuel amount in the main tank 3 can be measured based on the above (Equation 1) to (Equation 3).
- the liquid fuel amount measuring device shown in FIG. 4 has only the refueling mode in the above-described embodiment, and has a configuration specialized in its function.
- the same components as those in the embodiment of FIG. 1 are denoted by the same reference numerals.
- the liquid fuel amount measurement device shown in Fig. 4 has a main tank (first container) 3 for storing liquid fuel, a sub tank (second container) 4 connected to the main tank 3, a main tank 3 and a sub tank 4 And a second pipe valve (transfer means) 8 for transferring the liquid fuel in the main tank 3 to the sub-tank 4 via the second pipe 12, and a sub-tank 4
- a float sensor (detection means) 9 for detecting the remaining amount of liquid fuel in the tank
- a control device (control means) 11 for controlling the second pipeline valve 8 based on information from the float 9, and a main tank 3
- a calculating means 7 for calculating the volume of the liquid fuel.
- the calculating means 7 calculates the volume of the liquid fuel in the main tank 3 from the number of times the liquid fuel has been transferred from the main tank 3 to the sub tank 4.
- the float sensor 9 is provided in the sub-tank 4 and detects the amount of fuel stored in the sub-tank 4 based on the position of the float at the tip of the sensor.
- control device 11 controls opening and closing of the second pipeline valve 8.
- the controller 11 opens the second pipe valve 8 in accordance with a signal generated by the float sensor 9.
- the fuel in the main tank 3 is transferred to the sub tank 4 through the second pipe 12 through the second pipe 12.
- the control device 11 closes the second pipe valve 8 in accordance with a signal generated by the float sensor 9.
- the internal pressure in the main tank 3 is set higher than the internal pressure in the sub tank 4 in advance.
- the amount of fuel supplied per operation (that is, the fuel transferred from the main tank 3 to the sub-tank 4) is calculated by the arithmetic unit 7. Is multiplied by the number of times of fuel supply N, and the total amount of fuel transferred from the main tank 3 to the sub tank 4 can be calculated.
- the liquid fuel amount measuring device having such a configuration can be applied to the working machine shown in FIGS.
- the main tank 3 is provided on the lower traveling unit 30 and the sub tank 4 is provided on the upper revolving unit 20.
- control corresponding to the pressurizing mode of the present embodiment can be performed, and the configuration of the liquid fuel amount measuring device shown in FIG.
- control corresponding to the refueling mode of the present embodiment can be performed.
- the liquid fuel amount measuring device and the liquid fuel amount measuring method of the present invention are not limited to being applied only to a work machine, but may be applied to any liquid fuel amount measuring device for measuring an accurate liquid fuel amount. Can be. Industrial applicability
- liquid fuel amount measuring device and the liquid fuel amount measuring method according to the present invention can be widely applied not only to the field of conventional construction work machines but also to all machines that need to measure the liquid fuel amount. It is considered extremely high.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
- Measuring Volume Flow (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP03777292A EP1598545A1 (en) | 2003-02-27 | 2003-12-05 | System for measuring quantity of liquid fuel and method for measuring quantity of liquid fuel |
US10/517,836 US7174780B2 (en) | 2003-02-27 | 2003-12-05 | System for measuring quantity of liquid fuel and method for measuring quantity of liquid fuel |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003051718A JP4163978B2 (ja) | 2003-02-27 | 2003-02-27 | 液体燃料量計測装置及び液体燃料量計測方法 |
JP2003-51718 | 2003-02-27 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2004076844A1 true WO2004076844A1 (ja) | 2004-09-10 |
WO2004076844A8 WO2004076844A8 (ja) | 2005-03-24 |
Family
ID=32923371
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2003/015600 WO2004076844A1 (ja) | 2003-02-27 | 2003-12-05 | 液体燃料量計測装置、及び液体燃料量計測方法 |
Country Status (5)
Country | Link |
---|---|
US (1) | US7174780B2 (ja) |
EP (1) | EP1598545A1 (ja) |
JP (1) | JP4163978B2 (ja) |
CN (1) | CN100370131C (ja) |
WO (1) | WO2004076844A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104713608A (zh) * | 2013-12-15 | 2015-06-17 | 中国科学院大连化学物理研究所 | 一种用于测定液体燃料消耗量的计量装置及其计量方法 |
Families Citing this family (16)
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JP2006126106A (ja) * | 2004-11-01 | 2006-05-18 | Tokai Corp | 液体残量検知方法 |
US7739907B2 (en) * | 2006-11-29 | 2010-06-22 | Future Path Medical Llc | Container for physiological fluids |
US8813551B2 (en) * | 2005-04-10 | 2014-08-26 | Future Path Medical Holding Co. Llc | Device that accurately measures physiological fluid flow |
US9000905B2 (en) * | 2006-08-21 | 2015-04-07 | Nmhg Oregon, Llc | Auxiliary fuel tank |
JP5385829B2 (ja) * | 2010-03-16 | 2014-01-08 | 日立住友重機械建機クレーン株式会社 | 燃料補給装置および作業機械 |
US8521495B2 (en) * | 2010-12-10 | 2013-08-27 | The Boeing Company | Calculating liquid levels in arbitrarily shaped containment vessels using solid modeling |
CN103269892A (zh) * | 2010-12-21 | 2013-08-28 | 沃尔沃拉斯特瓦格纳公司 | 油箱设备和用于操作车辆油箱设备的方法 |
CN102564500B (zh) * | 2011-11-09 | 2013-11-13 | 北京爱社时代科技发展有限公司 | 一种压缩空气系统用气量的估算方法 |
WO2014021136A1 (ja) * | 2012-08-02 | 2014-02-06 | 日産自動車株式会社 | 燃料レベルセンサの故障診断装置及び燃料レベルセンサの故障診断方法 |
CN103770647A (zh) * | 2012-10-25 | 2014-05-07 | 昆达电脑科技(昆山)有限公司 | 汽车发动机舱内液体量显示装置 |
JP5910587B2 (ja) * | 2013-08-27 | 2016-04-27 | コベルコ建機株式会社 | 建設機械の燃料性状検出装置 |
DE112013000265B4 (de) * | 2013-12-11 | 2018-07-26 | Komatsu Ltd. | Arbeitsmaschine, Steuersystem für eine Arbeitsmaschine und Steuerverfahren für eine Arbeitsmaschine |
US20150211446A1 (en) * | 2014-01-24 | 2015-07-30 | Bennett Autogas Systems, LLC | Vehicle fuel supply system |
CN104931110B (zh) * | 2015-06-01 | 2018-02-27 | 深圳麦开网络技术有限公司 | 一种基于气压感应的容器内液体体积测量装置、容器与方法 |
CN110319901B (zh) * | 2019-07-02 | 2021-05-07 | 东莞市美迪格电子科技有限公司 | 一种测量雾化器气体体积的装置及其方法 |
KR20220028760A (ko) * | 2020-08-31 | 2022-03-08 | 현대두산인프라코어(주) | 건설 기계의 연료 주입 시스템 |
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- 2003-02-27 JP JP2003051718A patent/JP4163978B2/ja not_active Expired - Fee Related
- 2003-12-05 CN CNB2003801005996A patent/CN100370131C/zh not_active Expired - Fee Related
- 2003-12-05 WO PCT/JP2003/015600 patent/WO2004076844A1/ja active Application Filing
- 2003-12-05 EP EP03777292A patent/EP1598545A1/en not_active Withdrawn
- 2003-12-05 US US10/517,836 patent/US7174780B2/en not_active Expired - Fee Related
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JPS57154526U (ja) * | 1981-03-26 | 1982-09-28 | ||
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JPH11112117A (ja) * | 1997-10-03 | 1999-04-23 | Nippon Aramido Kk | プリント配線用基板材料、基板及びその製造方法 |
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CN104713608A (zh) * | 2013-12-15 | 2015-06-17 | 中国科学院大连化学物理研究所 | 一种用于测定液体燃料消耗量的计量装置及其计量方法 |
Also Published As
Publication number | Publication date |
---|---|
CN100370131C (zh) | 2008-02-20 |
JP2004257363A (ja) | 2004-09-16 |
JP4163978B2 (ja) | 2008-10-08 |
CN1692221A (zh) | 2005-11-02 |
EP1598545A1 (en) | 2005-11-23 |
US20050217368A1 (en) | 2005-10-06 |
WO2004076844A8 (ja) | 2005-03-24 |
US7174780B2 (en) | 2007-02-13 |
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