JP2009113826A - Fuel feeding apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To estimate and prevent the spout-out of an oil liquid delivered from an oil feeding nozzle accompanied by a difference between the shape of a fuel tank and the shape of an oil feeding inlet. <P>SOLUTION: A control circuit 25 of an oil feeding apparatus 11 reads respective control programs stored in ROM 32 and prevents the oil liquid from spouting out of the oil feeding inlet 16a. In the ROM 32, the control program (means for estimating the amount of feeding) for estimating the amount of feeding of a fuel of this time to a body to which the fuel is fed from the amount of feeding of the fuel stored, the control program (means for determining the completion of feeding) for determining that the feed of the fuel is near completion when the amount of the feed of the fuel fed into the fuel tank 16 and the amount of estimated feed are in a specified corresponding relation, and a means for outputting a signal indicating immediately before the completion (outputting means) when determined that it is immediately before the completion are stored. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a fuel supply apparatus, and more particularly to a fuel supply apparatus configured to supply a fuel by inserting a nozzle into a fuel supply port of a fuel tank.

  For example, in a fuel supply device that supplies fuel to a fuel tank (a fuel supply body) mounted on a vehicle, when a liquid level rise in the fuel tank is detected by the liquid level detection means of the fuel nozzle, Air suction by the negative pressure generating part is blocked by the liquid level, the locking of the valve mechanism of the fueling nozzle is released, and the main valve is closed to prevent the fuel from overflowing from the fueling port of the vehicle.

  However, by operating the nozzle lever of the fuel nozzle inserted in the fuel tank's fuel filler port in the valve opening direction, when the fuel sent by the pump is discharged to the fuel filler port, The pipe shape connected to the fuel filler port is different, and the fuel discharged due to the difference in shape is likely to rebound, and the liquid level detection operation is performed when the air inlet for detecting the liquid level at the nozzle tip is blocked by the rebound fuel. The fueling nozzle may be switched to the valve closing state by performing the same operation as.

  Therefore, in the fuel supply device, after the liquid level is detected by the liquid level sensor (liquid level detection means) that detects the liquid level, the fuel is not rebounded by reducing the discharge amount discharged from the fuel nozzle to the fuel tank. Is provided with a function of controlling the flow rate (see, for example, Patent Document 1).

In addition, in the self-service fuel supply system, the driver (customer) himself operates the fuel nozzle, so when the fuel nozzle is closed by detecting the liquid level, the driver himself opens the nozzle lever of the fuel nozzle. Refueling will be resumed by operating in the direction. In particular, when full tank refueling is performed, the driver inserts only the tip of the refueling nozzle into the refueling port in an attempt to refuel until the liquid level reaches the height of the refueling port even after the refueling is stopped by the liquid level detection. In many cases, refueling is resumed with a small flow rate.
JP 58-30998 A

  In the fuel supply device described in Patent Document 1, since the internal shape (pipe shape) of the fuel filler port differs depending on the vehicle, for example, when refueling is started with the discharge pipe of the fuel nozzle inserted into the fuel filler port, The fuel discharged from the tip of the discharge pipe does not fall smoothly into the tank, but the fuel has accumulated inside the pipe, or the oil bounced off the inner wall of the pipe overflows from the filler port, or the fuel flows from the filler port. There is a problem that it takes a long time to lubricate the fuel by reducing the discharge amount of the oiling nozzle so as not to overflow.

  In addition, in the case of the self-service method, when the driver himself performs additional refueling after refueling is stopped by detecting the liquid level, the additional pressure is reduced by reducing the flow rate. However, although the liquid level sensor detects the liquid level, the automatic valve closing operation of the main valve built in the fuel supply nozzle cannot be performed, and the fuel overflows from the fuel supply port.

  In view of the above circumstances, an object of the present invention is to provide a fuel supply device that solves the above-described problems.

  In order to solve the above problems, the present invention has the following means.

  The present invention includes a fuel supply path provided with a pump and a flow meter, and a nozzle provided at a tip of the fuel supply path, and the fuel supplies fuel to the fuel supply body from the nozzle. A supply system comprising: history storage means for storing fuel supply history information including past fuel supply amounts of the fuel supply body; and the fuel supply body with respect to the fuel supply body based on the fuel supply amount stored in the history storage means. When the supply amount estimation means for estimating the current fuel supply amount, the fuel supply amount supplied to the fuel supply body and the supply amount estimated by the supply amount estimation means are in a predetermined correspondence relationship, fuel supply Supply end determination means for determining that the end of the supply is about to end, and output means for outputting an end-of-end signal when it is determined that the supply end determination means is about to end immediately. It is intended to solve the problem.

  Further, the present invention is the fuel supply apparatus according to claim 1, wherein the nozzle is provided with a liquid level detection means for outputting a liquid detection signal by contacting the liquid inside the fuel supply body. The output means outputs the end-of-end signal when the end-of-supply determination means detects the end of fuel supply when the liquid level detection means outputs the liquid detection signal. Is a solution.

  According to the present invention, the current fuel supply amount to the fuel supply body is estimated based on the past fuel supply amount stored in the history storage means, and the fuel supply amount supplied to the fuel supply body is estimated. When the supply amount is in a predetermined correspondence relationship, it is determined that the fuel supply is about to end. Therefore, based on the determination result, the fact that the fuel supply is about to end is notified and the operator is notified, or from the nozzle By restricting the amount of discharge or stopping the fuel supply, it is possible to prevent the fuel from overflowing from the fuel filler port.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

  FIG. 1 is a block diagram schematically showing an embodiment of a fuel supply apparatus according to the present invention. As shown in FIG. 1, a fueling device (fuel supply device) 11 is installed in a fueling station, and a fueling hose 15 connected to a fueling nozzle (nozzle) 13 is pulled out on a side surface of the device body 12. The fueling nozzle 13 is normally hooked on a nozzle hook 14 provided on the side surface of the apparatus main body 12. For example, when a customer's automobile arrives at a fueling station, the operator removes the fueling nozzle 13 from the nozzle hook 14 and the vehicle The fuel tank (fuel-supplied supply body) 16 is inserted into the fuel filler port 16a for fueling.

  The oil supply nozzle 13 has a valve mechanism in which the valve opening is adjusted by a rotation operation of the nozzle lever, a negative pressure generating unit that generates a negative pressure by the flow rate of the oil liquid, one end communicated with the negative pressure generating unit, and the other end Has a suction pipe that has an air inlet opening near the tip of the discharge pipe and sucks air, and a diaphragm that operates due to negative pressure when the air inlet is closed due to a rise in the liquid level due to refueling. And a liquid level detection mechanism that performs a valve closing operation. In this embodiment, a negative pressure type liquid level detection mechanism configured to close when the air introduction port is closed by the liquid level functions as a liquid level detection unit. Of course, as the liquid level detection means, a liquid level sensor (for example, an optical sensor or an ultrasonic sensor that optically detects the liquid level) may be used.

  The oil supply nozzle 13 has an oil supply hose 15 connected to a joint provided on the side surface of the nozzle body, and the oil supply hose 15 is connected to the liquid supply line 20 in the apparatus main body 12. The liquid supply pipe 20 extends to the underground tank 21 and is inserted in the middle of which a pump 22, a flow meter 24, and a continuously variable electromagnetic valve 27 are disposed.

  The continuously variable electromagnetic valve 27 is opened at a valve opening corresponding to the frequency and duty of the drive signal, and adjusts the flow rate of the oil supplied to the oil supply nozzle 13.

  Further, an oil supply amount indicator 26 for displaying an oil supply amount obtained by integrating the instantaneous flow rate measured by the flow meter 24 is disposed on the front surface of the apparatus main body 12. The nozzle switch 14 a of the nozzle hook 14, the pump motor 22 a of the pump 22, the flow rate pulse transmitter 24 a of the flow meter 24, and the oil supply amount indicator 26 are connected to the control circuit 25.

  When the oil supply nozzle 13 is removed from the nozzle hook 14 and a signal from the nozzle switch 14a is input, the control circuit 25 starts the pump motor 22a of the pump 22 and pumps up the oil in the underground tank 21. When the flow rate discharged from the nozzle 13 is constant over a predetermined time, the valve opening degree of the continuously variable electromagnetic valve 27 is controlled so that this constant flow rate becomes the maximum discharge flow rate.

  The oil supply nozzle 13 has a configuration in which the valve opening degree of a built-in valve is adjusted according to the operation position of the nozzle lever 13a, and a latch portion that latches the tip of the nozzle lever 13a at an arbitrary operation position. (Not shown) is provided. When the nozzle lever 13 a of the fuel supply nozzle 13 is operated, fuel supply to the fuel tank 16 is started, and a flow rate pulse is output from the flow rate pulse transmitter 24 a of the flow meter 24 to the control circuit 25.

  Then, the control circuit 25 integrates the flow rate pulses output from the flow rate pulse transmitter 24a to display the oil supply amount on the oil supply amount indicator 26, and performs full tank oil supply control or preset oil supply control.

  FIG. 2 is a block diagram showing the configuration of the control circuit 25. As shown in FIG. 2, the control circuit 25 includes a CPU 30 that executes an oil supply control process to be described later, a RAM (storage means) 31 that stores each data, a ROM 32 that stores a preset oil supply control program, and a signal And an I / O interface 33 for performing input / output. The RAM 31 functions as a history storage unit that stores fuel supply history information including the past fuel supply amount of the fuel tank 16. The fuel supply history information includes the history of the past fuel supply amount of the fuel tank 16, the characteristics of the fuel tank 16 (for example, information on the shape of the fuel supply port and the shape of the pipe communicated with the fuel supply port, Information such as the shape of the tank in which the discharged oil bounces back and the air leakage is bad) is included.

  The I / O interface 33 includes a nozzle switch 14a for the nozzle hook 14, a flow rate pulse transmitter 24a for the flow meter 24, a display 26, a continuously variable solenoid valve 27, a preset switch 35, and a card reader 40. A speaker 42 and a restart switch 44 are connected. The card reader 40 reads customer information (identification code) recorded on a customer card issued by a gas station. The restart switch 44 is a switch that is operated when additional fueling is performed when the fueling nozzle 13 performs an automatic valve closing operation based on liquid level detection.

  In this embodiment, the ROM 32 functions as a storage unit that stores in advance reference data representing the relationship between the discharge amount with respect to the voltage application time to the continuously variable solenoid valve 27. The ROM 32 also has a control program (supply amount estimation means) for estimating the current fuel supply amount to the fuel supply body based on the fuel supply amount stored in the RAM 31, and the fuel supply amount supplied to the fuel tank 16. When the supply amount estimated to be in a predetermined correspondence relationship, the control program for determining that the fuel supply is about to end (supply end determination means), and when it is determined that the end is about to end, A signal is output (output means).

  Therefore, the CPU 30 of the control circuit 25 reads each control program stored in the ROM 32 and prevents the oil liquid from being spilled from the oil supply port 16a.

  The preset switch 35 is installed, for example, in the vicinity of the nozzle hook 14 and is operated only when preset oiling is performed. Therefore, if the preset value is input by operating the preset switch 35 before starting refueling, the preset refueling mode is set.

  Here, the control process executed by the control circuit 25 will be described with reference to the flowcharts of FIGS.

  As shown in FIG. 3, the control circuit 25 reads customer information from the customer card inserted into the card reader 40 in S11. In next S 12, the vehicle type of the vehicle, the characteristics of the fuel tank 16, and the past refueling results are searched, and if the information corresponding to the RAM 31 is stored, the past information regarding the fuel tank 16 stored in the RAM 31 is stored. Based on the fuel supply history information including the fuel supply amount (refueling record), an estimation calculation process of an average value (estimated value) of the fuel supply amount is performed (supply amount estimation means).

  Then, it progresses to S13 and it is checked whether the shape of the fuel filler opening 16a of the said fuel tank 16 is suitable for fuel supply. In S13, when the shape of the fuel supply port 16a of the fuel tank 16 is easy to insert the discharge pipe 17 of the fuel supply nozzle 13 and there is little rebound of the oil, it is determined that the shape of the fuel supply port 16a is good. Then, the fuel supply can be started with the flow rate set so that the discharge amount from the fuel supply nozzle 13 is 40 L / min. In S13, when the shape of the oil supply port 16a of the fuel tank 16 is rebounded, the flow of the oil supply port 16a is determined to be inferior, and the process proceeds to S15. Refueling can be started with the flow rate limited to 15 L / min. Thereby, it is possible to prevent the oil liquid from overflowing from the oil supply port 16a without reducing the liquid level detection capability of the oil supply nozzle 13. The flow rate of 15 L / min is a lower limit value at which the negative pressure generating mechanism of the fueling nozzle 13 can generate a negative pressure and the automatic valve closing mechanism based on the liquid level detection is operable.

  In next S16, it is checked whether or not the fuel supply amount (supply amount) measured by the flow meter 24 has reached the capacity of the fuel tank 16 (supply end determination means). In S16, when the oil supply amount (supply amount) measured by the flow meter 24 reaches the capacity of the fuel tank 16, the process proceeds to S17, where the continuously variable electromagnetic valve 27 is closed or the pump 22 to the pump motor 22a is turned on. The energization is stopped and the current control process is terminated.

  In S16, when the amount of fuel supplied (supply amount) measured by the flow meter 24 does not reach the capacity of the fuel tank 16, the process proceeds to S18, where the amount of fuel supplied (supply amount) measured by the flow meter 24 is the fuel. It is checked whether the capacity of the tank 16 is 70% or more. In S18, when the amount of fuel supplied (supply amount) measured by the flow meter 24 is 70% or more of the capacity of the fuel tank 16, the process proceeds to S19. For example, a voice such as “please fill up soon. The guidance is uttered from the speaker 42. Thereby, the fueling operator can prepare to return the operation position of the nozzle lever of the fueling nozzle 13.

  In S18, when the amount of oil supplied (supply amount) measured by the flow meter 24 is less than 70% of the capacity of the fuel tank 16, the process proceeds to S20, and the amount of oil supplied (supply amount) measured by the flow meter 24 is increased. It is checked whether or not the capacity of the fuel tank 16 is 80% or more. In S20, when the fueling amount (supplying amount) measured by the flow meter 24 is 70% or more of the capacity of the fuel tank 16, the process proceeds to S21, where the valve opening degree of the continuously variable electromagnetic valve 27 is throttled and the fueling nozzle 13 Is reduced to 15 L / min. Thereby, it is possible to prevent the oil liquid from overflowing from the oil supply port 16a without reducing the liquid level detection capability of the oil supply nozzle 13.

  In S20, when the amount of oil supplied (supply amount) measured by the flow meter 24 is less than 70% of the capacity of the fuel tank 16, the process proceeds to S22, and the amount of oil supplied (supply amount) measured by the flow meter 24 is calculated. It is checked whether or not it is 120% or more of the past refueling performance (average value) of the fuel tank 16 (supply end determination means). In S22, when the refueling amount (supply amount) measured by the flow meter 24 is 120% or more of the past refueling performance (average value) of the fuel tank 16, the total of the remaining amount of fuel tank 16 and the supply amount Therefore, the process proceeds to S23 where the continuously variable solenoid valve 27 is closed or the pump motor 22a of the pump 22 is de-energized, and the current control process is terminated (output means).

  In S22, when the refueling amount (supply amount) measured by the flow meter 24 is less than 120% of the past refueling performance (average value) of the fuel tank 16, the process proceeds to S24 and is measured by the flow meter 24. It is checked whether the refueling amount (supply amount) is 90% or more of the past refueling performance (average value) of the fuel tank 16 (supply end determination means). In S24, when the refueling amount (supply amount) measured by the flow meter 24 is 90% or more of the past refueling performance (average value) of the fuel tank 16, the process proceeds to S25. “Please note.” Voice guidance is output from the speaker 42 (output means). Thereby, the fueling operator operates to return the nozzle lever 13 a of the fueling nozzle 13.

  In S24, when the amount of fuel supplied (supply amount) measured by the flow meter 24 is less than 90% of the past refueling performance (average value) of the fuel tank 16, the process proceeds to S26 and measured by the flow meter 24. It is checked whether the refueling amount (supply amount) is 80% or more of the past refueling performance (average value) of the fuel tank 16 (supply end determination means). In S26, when the refueling amount (supply amount) measured by the flow meter 24 is 80% or more of the past refueling result (average value) of the fuel tank 16, the process proceeds to S27. “Please note.” Voice guidance is output from the speaker 42 (output means). Thereby, the fueling operator can prepare for returning the operation position of the nozzle lever 13a of the fueling nozzle 13.

  In S26, when the amount of oil supplied (supply amount) measured by the flow meter 24 is less than 80% of the past oil supply performance (average value) of the fuel tank 16, the process proceeds to S28 (shown in FIG. 4). It is checked whether or not the refueling amount (supply amount) measured by the flow meter 24 is 70% or more of the past refueling performance (average value) of the fuel tank 16 (supply end determination means). In S28, when the refueling amount (supply amount) measured by the flow meter 24 is 70% or more of the past refueling result (average value) of the fuel tank 16, the process proceeds to S29 and the stepless solenoid valve 27 is opened. The degree of discharge is reduced, and the discharge amount from the fuel supply nozzle 13 is reduced to 15 L / min (output means). Thereby, it is possible to prevent the oil liquid from overflowing from the oil supply port 16a without reducing the liquid level detection capability of the oil supply nozzle 13.

  In S28, when the amount of fuel supplied (supply amount) measured by the flow meter 24 is less than 70% of the past fuel supply result (average value) of the fuel tank 16, the process proceeds to S30, where the fuel tank 16 is in the air Check if the tank is occluded. In addition, since the tank shape is complicated depending on the structure of the vehicle (or vehicle type), the tank with poor air escape is, for example, when refueling with the discharge pipe 17 of the refueling nozzle 13 inserted into the refueling port 16a. It is a tank that tends to be in a state where air in the tank is difficult to escape.

  In S30, if the fuel tank 16 is a tank with poor air escape, the process proceeds to S31, where the fuel supply amount (supply amount) measured by the flow meter 24 is 80 of the past fuel supply performance (average value) of the fuel tank 16. % Is checked (supply end determination means). In S31, when the refueling amount (supply amount) measured by the flow meter 24 is 80% or more of the past refueling performance (average value) of the fuel tank 16, the process proceeds to S33, and whether or not the temporary stop flag is on. Check.

  In S31, when the amount of fuel supplied (supply amount) measured by the flow meter 24 is less than 80% of the past fuel supply result (average value) of the fuel tank 16, the process proceeds to S32 and measured by the flow meter 24. It is checked whether the refueling amount (supply amount) is 70% or more of the tank capacity of the fuel tank 16 (supply end determination means). In S32, when the fuel supply amount (supply amount) measured by the flow meter 24 is 70% or more of the tank capacity of the fuel tank 16, the process proceeds to S33, and it is checked whether or not the temporary stop flag is on.

  If the temporary stop flag is not on in S33, the process proceeds to S34, and the pump 22 is stopped for 10 seconds (output means). In S35, the temporary stop flag is set to ON. As a result, while the fuel supply to the fuel tank 16 is stopped for 10 seconds, the liquid level in the fuel tank 16 can be stabilized and air in the tank can be released to prevent the oil liquid from overflowing.

  In S32, when the fuel amount (supply amount) measured by the flow meter 24 is less than 70% of the tank capacity of the fuel tank 16, or when the temporary stop flag is on in S33, the process proceeds to S36. .

  In next S36, it is checked whether or not the shape of the fuel filler opening 16a is bad. The poor shape of the fuel filler opening 16a includes, for example, a case where the discharge pipe 17 of the fuel filler nozzle 13 can only be inserted halfway, or a case where the oil discharged from the fuel filler nozzle 13 rebounds. .

  In S36, when the shape of the fuel filler opening 16a is bad, the process proceeds to S37, and whether or not the fuel amount (supply amount) measured by the flow meter 24 is 80% or more of the past fuel supply result (average value) of the fuel tank 16 or not. Is checked (supply end determination means). In S37, when the refueling amount (supply amount) measured by the flow meter 24 is 80% or more of the past refueling result (average value) of the fuel tank 16, the process proceeds to S39 and the stepless solenoid valve 27 is opened. The degree of discharge is reduced, and the discharge amount from the fuel supply nozzle 13 is reduced to 15 L / min (output means). Thereby, it is possible to prevent the oil liquid from overflowing from the oil supply port 16a without reducing the liquid level detection capability of the oil supply nozzle 13.

  Further, in S37, when the amount of fuel supplied (supply amount) measured by the flow meter 24 is less than 80% of the past refueling result (average value) of the fuel tank 16, the process proceeds to S38 and measured by the flow meter 24. It is checked whether the refueling amount (supply amount) is 70% or more of the tank capacity of the fuel tank 16 (supply end determination means). In S38, when the fuel supply amount (supply amount) measured by the flow meter 24 is 70% or more of the tank capacity of the fuel tank 16, the process proceeds to S39, where the valve opening degree of the continuously variable electromagnetic valve 27 is reduced, and the fuel supply nozzle The discharge amount from 13 is reduced to 15 L / min.

  In S37, when the amount of fuel supplied (supply amount) measured by the flow meter 24 is less than 70% of the tank capacity of the fuel tank 16, the process proceeds to S40 (shown in FIG. 5). In S40, it is checked whether or not the fuel supply nozzle 13 is in an automatic valve closing state by liquid level detection. In S40, when the refueling nozzle 13 is in the automatic valve closing state based on the liquid level detection, the process proceeds to S41, where the refueling amount (supply amount) measured by the flow meter 24 is the past refueling record (average) of the fuel tank 16. Value) is checked for 80% or more. In S41, when the refueling amount (supply amount) measured by the flow meter 24 is 80% or more of the past refueling result (average value) of the fuel tank 16, the process proceeds to S43, and the resumption flag for performing additional refueling is turned on. Check whether or not.

  Further, in S41, when the amount of fuel supplied (supply amount) measured by the flow meter 24 is less than 80% of the past refueling result (average value) of the fuel tank 16, the process proceeds to S42 and measured by the flow meter 24. It is checked whether the refueling amount (supply amount) is 70% or more of the tank capacity of the fuel tank 16. In S42, when the fuel amount (supply amount) measured by the flow meter 24 is 70% or more of the tank capacity of the fuel tank 16, the process proceeds to S43, and it is checked whether or not a resumption flag for performing additional fuel is on. .

  If the restart flag is not on in S43, the process proceeds to S44 and the pump 22 is stopped (output means). Thereby, the fuel supply to the fuel tank 16 is stopped, and the oil liquid can be prevented from overflowing from the fuel supply port 16a.

  In the next S45, it is checked whether or not the resume switch 44 is turned on. If the restart switch 44 is off in S44, the process proceeds to S46 to check whether the nozzle switch 14a is on. In S46, when the nozzle switch 14a is on, the fueling nozzle 13 has been returned to the nozzle hook 14, so the process proceeds to S47 and the current control process is terminated. In S46, when the nozzle switch 14a is off, the fuel supply nozzle 13 is not returned to the nozzle hook 14, so the process returns to S45 and the processes of S45 and S46 are repeated.

  In S45, when the resuming switch 44 is turned on, the process proceeds to S48, where the resuming flag is set to on, and the pump 22 is restarted to return to a refuelable state.

  Further, in S42, when the amount of fuel supplied (supply amount) measured by the flow meter 24 is less than 70% of the tank capacity of the fuel tank 16, or when the restart flag is on in S43, the process proceeds to S49. move on. In S49, it is checked whether the nozzle switch 14a is on. In S49, when the nozzle switch 14a is off, the fueling nozzle 13 is not returned to the nozzle hook 14, so the process returns to S16 described above, and the processes after S16 are repeated. In S49, when the nozzle switch 14a is on, the fueling nozzle 13 has been returned to the nozzle hook 14, so the process proceeds to S50, and the current control process is terminated.

  In the above-described embodiment, an explanation has been given by taking as an example an oil supply device for supplying an oil liquid such as gasoline or light oil. However, the present invention is not limited to this, and other fuels (for example, CNG, LNG, LPG, hydrogen, etc.) are used. Of course, the present invention can also be applied to the fuel supply device to be supplied.

It is a block diagram which shows typically one Example of the fuel supply apparatus by this invention. 2 is a block diagram showing a configuration of a control circuit 25. FIG. It is a flowchart for demonstrating the control process which the control process 25 performs. It is a flowchart for demonstrating the control process which the control process 25 performs following the process of FIG. 5 is a flowchart for explaining a control process executed by a control process 25 following the process of FIG. 4.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Oil supply apparatus 13 Oil supply nozzle 14 Nozzle hook 14a Nozzle switch 15 Oil supply hose 16 Fuel tank 22 Pump 24 Flow meter 25 Control circuit 27 Stepless solenoid valve 30 CPU
31 RAM
32 ROM
33 I / O interface 40 Card reader 42 Speaker 44 Restart switch

Claims (2)

A fuel supply path including a pump and a flow meter;
A nozzle provided at a tip of the fuel supply path;
A fuel supply system for supplying fuel to the fuel supply body from the nozzle,
History storage means for storing fuel supply history information including past fuel supply amount of the fuel supply body;
A supply amount estimation means for estimating the current fuel supply amount to the fuel supply body based on the fuel supply amount stored in the history storage means;
A supply end determination means for determining that the fuel supply is about to end when the fuel supply amount supplied to the fuel supply body and the supply amount estimated by the supply amount estimation means are in a predetermined correspondence relationship;
An output unit that outputs an end-of-end signal when it is determined that the end of supply is about to end by the supply end determination unit;
A fuel supply device comprising: The fuel supply device according to claim 1,
The nozzle is provided with a liquid level detection means for outputting a liquid detection signal by contacting the liquid inside the fuel supply body,
The output means outputs a near-end signal when the supply end determination means detects an end of fuel supply when the liquid level detection means outputs a liquid detection signal. apparatus.

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