JP2008114887A - Oil feeder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an oil feeder which completely fills a fuel in an oil tank of any shape to a full condition, and prevents the oil from being overflowed from the fuel tank. <P>SOLUTION: An oil feed control device (35) has a control means in which: an ON-signal of a nozzle switch (22) is received and a full-open signal is output to a control valve (15); a drive signal is outputted to a motor (13) for driving a pump; a first liquid detecting signal of a liquid level sensor (26) provided on a fuel tank (24) of an automobile (23) is received and a close signal is outputted to the control valve (15); a stop signal is outputted to the motor (13) for driving the pump; a small-open signal is outputted to the control valve (15) after a predetermined time; a drive signal is outputted to the motor (13) for driving the pump; a second liquid detecting signal of the liquid level sensor (26) is received and a close signal is outputted to the control valve (15); and a stop signal is outputted to the motor (13) for driving the pump. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a fueling device that supplies fuel oil to an automobile, and more particularly to a fueling device that can be suitably implemented in a self-service type fueling station where a customer himself supplies fuel.

  In recent years, self-service gas stations that are refueled by customers themselves are becoming popular. The lubrication system installed at the self-service gas station is equipped with a liquid level sensor in the lubrication nozzle so that customers who are unfamiliar with refueling can refuel. When the liquid level sensor detects liquid, the lubrication automatically stops. In addition, the danger of oil overflowing from the oil filler opening is prevented.

  By the way, the fuel oil of an automobile is easy to foam, and when the tank is almost full, the foam on the liquid level rises in the fuel filler opening of the fuel tank, and the liquid level sensor detects this foam and the fuel supply automatically stops. When the bubbles disappear after the fuel supply is automatically stopped in this way, there is a considerable space in the fuel tank where the fuel can be supplied, and refueling is performed to fill the space and fill the tank completely. This additional oil supply is dangerous because the amount of oil supply is small, and if the oil is supplied with a large discharge amount, the oil may overflow.

  Patent Document 1 discloses a fueling device in which a liquid level sensor including a transmitter and a receiver is provided in a fueling nozzle, and when the liquid level sensor detects liquid, the control valve is closed and fueling is automatically stopped. Although this is effective, since refueling is stopped by the first liquid detection, there is a disadvantage that refueling cannot be performed to a full tank.

  Further, in Patent Document 2, when the lever of the oil supply nozzle is pulled to the upper stage, the valve is fully opened. When the liquid level sensor detects the liquid level, the valve is closed and the oil supply is automatically stopped, and when the lever is pulled to the middle stage, the valve is opened. A refueling device is disclosed in which the valve is closed and the refueling automatically stops when the liquid level sensor detects the liquid level. Although this is also effective, if the lever is pulled to the upper stage when the closed valve is restarted, the valve may be fully opened and the oil supply may be resumed with a large discharge, causing the oil to overflow.

In any of these conventional techniques, the oil supply is controlled by the liquid detection of the liquid level sensor provided in the oil supply nozzle. However, the shape of the fuel filler port of the fuel tank varies depending on the vehicle, and depending on the shape of the filler port, there is a disadvantage that the fuel supply ends before the tank is full or the oil overflows from the filler port.
JP 58-208628 A JP-A-8-230999

  The present invention has been made in view of the above, and an object of the present invention is to provide a fueling device that can fill a fuel tank of any shape up to a full tank and does not overflow oil from the fuel tank.

  According to the present invention, an oil supply device (23) for an automobile (23) provided with a liquid level sensor (26) in a fuel tank (24) and provided with a transmitter (27) for transmitting a liquid detection signal of the liquid level sensor (26). In 1), a pump (14), a control valve (15), and a flow meter (17) are installed in the oil supply pipe (12) of the oil supply device (1), and oil is supplied to the discharge pipe (18) of the flow meter (17). Connect the hose (19), provide the receiver (31) to the oil nozzle (20) provided at the tip of the oil hose (19), and set the nozzle switch (22) to the nozzle hook (21) to hook the oil nozzle (20). The nozzle switch (22) ON / OFF signal and the liquid detection signal received by the receiver (31) are input to the fuel supply control device (35) and opened from the fuel supply control device (35) to the control valve (15). -Close signal and drive / stop signal to pump drive motor (13) The oil supply control device (35) receives the ON signal of the nozzle switch (22), outputs a fully open signal to the control valve (15), and outputs a drive signal to the pump drive motor (13), In response to the first liquid detection signal of the liquid level sensor (26), a close signal is output to the control valve (15), a stop signal is output to the pump driving motor (13), and the control valve ( 15) A small open signal is output to the pump driving motor (13), a drive signal is output to the control valve (15) in response to the second liquid detection signal of the liquid level sensor (26). And a control means for outputting a stop signal to the motor (13) for driving the pump.

  The discharge pipe (30) of the refueling nozzle (20) is provided with a gutter (34) having an insertion sensor (33), and the refueling control device (35) receives an insertion signal from the insertion sensor (33). Control means for enabling refueling is provided.

  The oil supply nozzle (20) is provided with a liquid level sensor (32), and the oil supply control device (35) is provided with a control means for receiving a liquid detection signal from the liquid level sensor (32) and stopping oil supply. ing.

The present invention has the following excellent effects.
(1) Since the fuel supply is controlled by the liquid level sensor provided in the fuel tank of the automobile, the fuel tank can be fully filled without overflowing any shape of the fuel tank.
(2) First, oil is supplied by discharge, and when it is almost full, oil is supplied by small discharge, so that it can be supplied to full tank in a short time.
(3) After the tank is almost full, the oil is supplied with a small discharge, so the oil does not overflow.
(4) Since the insertion sensor is provided in the tub provided in the discharge pipe and the insertion signal of the insertion sensor is received to enable the oil supply, the risk of scattering the oil to the outside can be prevented.
(5) Since the liquid level sensor is also provided in the oil supply nozzle, it is possible to supply oil safely even to an automobile not provided with the liquid level sensor.
(6) If the tank provided in the discharge pipe is brought into contact with the oil supply port to supply oil, the liquid level sensor of the oil supply nozzle is located at a predetermined depth, and there is no possibility of overflowing oil.
(7) The oil droplets popping out with the eaves provided in the discharge pipe of the oiling nozzle can be returned to the oiling port, and the risk of oil jumping out can be prevented.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a front view of a fueling device of the present invention. A housing 2 of the fueling device 1 has a plurality of oiling systems, for example, high octane gasoline 3, regular gasoline 4, and light oil 5 incorporated therein. An oil supply operation panel 6 and an oil supply amount indicator 7 are provided on the front surface of the housing 2, and an indicator lamp 8 is provided on the housing 2. The refueling operation panel 6 is provided with a device 9 for specifying the type of oil to be refueled, a device 10 for paying a refueling fee, a call button 11 for calling a worker, and the like. The call button 11 is pressed by a customer who has a question about the refueling work and turns on the indicator lamp 8 to notify the worker at the refueling station.

  FIG. 2 is a schematic diagram of the oil supply device 1 and the automobile to be supplied with oil. The oil supply pipes 12 of the respective oil supply systems 3, 4 and 5 have a pump 14 driven by a motor 13, an electromagnetic control valve 15, and a flow rate pulse transmitter. An oil supply nozzle 20 is provided at the tip of an oil supply hose 19 that is connected to a discharge pipe 18 of the flow meter 17. The fueling nozzle 20 is hung on a nozzle hook 21, and a nozzle switch 22 is provided on the nozzle hook 21.

  In addition, a liquid level sensor 26 is provided in the back of the fuel filler port 25 of the fuel tank 24 of the automobile 23 that receives fuel, and a transmitter 27 that wirelessly outputs a liquid detection signal detected by the liquid level sensor 26 is provided. ing.

  FIG. 3 is a partial cross-sectional view showing a state in which fueling is performed by the fueling nozzle 20. The fueling nozzle 20 is attached to the tip of the fueling hose 19, a valve 29 that is opened and closed by a lever 28 is provided, and the tip of the discharge pipe 30. The receiver 31 and the liquid level sensor 32 are provided. The receiver 31 receives a liquid detection signal from a transmitter 27 provided in the fuel tank 24.

A flange 34 having an insertion sensor 33 is provided at the rear end of the discharge pipe 30 of the fuel nozzle 20. This rod 34 is a guard that prevents the oil splashing from the oil filler 25 from falling on the operator, and the insertion sensor 33 provided on the rod 34 is when the discharge pipe 30 is completely inserted into the oil filler 25. It issues an insertion signal.
In addition, the liquid level sensor 26 provided in the fuel filling port 25 of the fuel tank 24 of the automobile 23 is provided in the relatively back side so that the liquid is detected prior to the liquid level sensor 32 of the fueling nozzle 20. It has become.

  FIG. 4 is a block diagram showing the control relationship of the fueling device 1. The on / off signal of the nozzle switch 22, the insertion signal of the insertion sensor 33, the flow rate signal of the flow rate pulse transmitter 16, and the liquid level sensor 32 of the fueling nozzle 20. The detection signal and the liquid detection signal of the liquid level sensor 26 of the fuel tank 24 are input to the fuel supply control device 35. From the oil supply control device 35, a drive / stop signal is input to the motor 13 that drives the pump 14, an oil supply amount display signal is input to the oil supply amount indicator 7, and an open / close signal is input to the control valve 15.

  The oil supply control device 35 includes a counting means 36 that receives the flow rate pulse signal and counts the amount of oil supply, a time measuring means 37 that measures the progress after receiving the liquid detection signal, a motor drive means 38 that outputs a drive / stop signal, Display drive means 39 for outputting the amount of oil supply, valve opening degree storage means 40 for storing the valve opening degree, and valve driving means 41 for outputting an open / close signal based on the stored value of the valve opening degree storage means 40. ing.

Next, the mode of refueling will be described based on the flow chart of the refueling operation shown in FIG.
The car that has come to the refueling station stops at the refueling device 1, designates the oil type to be refueled with the device 9 that designates the oil type of the refueling operation panel 6, and pays with the device 10 that settles the refueling fee. input. Then, the discharge pipe 30 of the fueling nozzle 20 removed from the nozzle hook 21 of the fueling device 1 is inserted until the rod 34 contacts the fueling port 25 of the automobile 23, and the valve 28 is opened by pulling the lever 28 of the fueling nozzle 20. Start refueling.

In this way, when the ridge 34 is brought into contact with the oil supply port 25 and the oil is supplied, the liquid level sensor 32 is positioned at a predetermined depth, so that the liquid can be detected accurately and there is no possibility of overflowing the oil. Moreover, the oil droplet which tries to jump out from the fuel filler opening 25 hits the flange 34, returns to the fuel filler outlet 25, and can prevent the danger of jumping out.
When the fueling nozzle 20 is removed from the nozzle hook 21, an ON signal is input from the nozzle switch 22 to the fueling control device 35 (ST 1), and an insertion signal is received from the insertion sensor 33 provided on the flange 34 of the fueling nozzle 20. (ST2), the valve drive means 41 of the fuel supply control device 35 outputs a fully open signal to the control valve 15 based on the valve opening stored in the valve opening storage means 40, and the motor drive means 38 drives. A signal is output to the motor 13 (ST3). In response to this fully open signal, the control valve 15 is fully opened, and in response to the drive signal, the motor 13 rotates to drive the pump 14.

When the valve 29 is opened by pulling the lever 28 of the oil supply nozzle 20, the oil supply is started with a large discharge amount of, for example, about 35 L / min, and the oil in the oil supply pipe 12 is supplied to the pump 14, the control valve 15, the flow meter 17, the discharge pipe. 18, fuel is supplied into the fuel tank 24 of the automobile 23 through the fuel hose 19 and the fuel nozzle 20.
In this way, the large discharge oil supply process is executed, the liquid level in the fuel tank 24 rises, and when the liquid level sensor 26 of the fuel supply port 25 detects bubbles on the liquid level, a liquid detection signal is transmitted from the transmitter 27. Is done. When this liquid detection signal is received by the receiver 31 of the fueling nozzle 20 and inputted to the fueling control device 35 (ST4), the valve driving means 41 outputs a closing signal to the control valve 15, and the motor driving means 38 gives a stop signal. Output to the motor 13 (ST5). In response to this close signal, the control valve 15 is fully closed, and in response to the stop signal, the motor 13 stops and the drive of the pump 14 is stopped.

When the time on which the bubbles on the liquid level in the fuel tank 24 of the automobile 23 are expected to disappear, for example, 3 seconds, is measured by the time measuring means 37 (ST6), the valve driving means 41 sends a small opening signal to the control valve 15. The motor drive means 38 outputs a drive signal to the motor 13 (ST7). In response to this small opening signal, the control valve 15 opens small, and in response to the driving signal, the motor 13 rotates and the pump 14 is driven.
Then, for example, refueling is resumed with a small discharge of about 20 L / min. In this way, the refueling restart after the tank is almost full is pressed by small discharge by the control valve 15 and is supplied with no risk of oil overflowing.

  Thus, when the small discharge oil supply process is executed, the liquid level in the fuel tank 24 rises, the liquid level sensor 26 detects the liquid level, and the receiver 31 receives the liquid detection signal emitted from the transmitter 27. (ST8), the control valve 15 is fully closed, the motor 13 is stopped, and the drive of the pump 14 is stopped (ST9).

  Finally, the refueling nozzle 20 pulled out from the refueling port 25 of the automobile 23 is hung on the nozzle hook 21 and the OFF signal of the nozzle switch 22 is input to the refueling control device 35 (ST10). This is done (ST11), and the refueling operation is completed.

  In step ST4, when the insertion sensor 33 is turned off before receiving the liquid level detection signal, for example, when the fueling nozzle 20 is pulled out from the fueling port 25 and the insertion sensor 33 is turned off (ST12), the control valve 15 is fully closed, The motor 13 is stopped (ST13). In this way, when the oil supply nozzle 20 is extracted from the oil supply port 25, the oil supply is stopped and the risk of scattering the oil to the outside is prevented.

When the operator notices an erroneous operation and inserts the oil supply nozzle 20 deeply into the oil supply port 25 to turn on the insertion sensor 33 (ST14), step ST6 and subsequent steps are executed.
When the fuel nozzle 20 is pulled out from the fuel filler port 25 in order to end the fuel supply, the fuel supply nozzle 20 is put on the nozzle hook 21 and the nozzle switch 22 is turned off (ST15). Is performed (ST16), and the refueling operation is completed.

In step ST4, when a liquid detection signal is not received by the receiver 31 due to a failure of the liquid level sensor 26 or the transmitter 27 of the automobile 23, the liquid level rising through the fuel filler 25 is the liquid level sensor of the fuel nozzle 20. If detected in step 32 (ST17), step ST9 and subsequent steps are executed.
Similarly, in step ST8, when the insertion sensor 33 is turned off before receiving the liquid detection signal of the liquid level sensor 26 of the automobile 23 (ST18), and when the liquid level is detected by the liquid level sensor 32 of the fueling nozzle 20. (ST19), Step ST9 and subsequent steps are executed.

FIG. 6 is a flow chart showing an aspect of displaying the amount of oil supply. When the oil supply nozzle 20 is removed from the nozzle hook 21 and an ON signal is input from the nozzle switch 22 to the oil supply control device 35 (ST21), the counting means of the oil supply control device 35 The previous refueling amount stored in 36 is returned to zero (ST22).
When refueling is performed and a flow rate signal is input from the flow rate pulse transmitter 16 of the flow meter 17 to the refueling control device 35 (ST23), the refueling amount is calculated by the counting means 36, and the refueling amount display 7 is displayed from the display drive means 39. The oil supply amount display signal is output and displayed (ST24).

Then, the refueling is finished, the refueling nozzle 20 is hung on the nozzle hook 21, and an off signal is input from the nozzle switch 22 to the refueling control device 35 (ST25), and the control of the refueling amount display is finished.
The liquid level sensor 32 provided in the fuel supply nozzle 20 may be an optical sensor having a transmitter and a receiver as shown in Patent Document 1 or a mechanical sensor as shown in Patent Document 2. Good. In the mechanistic one shown in Patent Document 2, a pressure sensor is provided in the diaphragm chamber, and a pressure change in the diaphragm chamber due to liquid detection is detected and used as a liquid detection signal, or a deformation sensor is provided in the diaphragm chamber, and liquid detection is performed. The deformation of the diaphragm may be detected and used as a liquid detection signal.

  Since fuel tanks of any shape can be filled up to full tank without overflowing oil, it is possible to provide a fueling device that can be suitably installed in a self-service filling station where the customer himself refuels.

The front view of the oil supply apparatus of this invention. The schematic diagram of the oil supply apparatus and the motor vehicle supplied with oil. The partial cross section figure of the state which is refueling with a fuel nozzle. The block diagram which shows the control relationship of a fueling apparatus. The flowchart which shows the aspect of the oil supply operation of a fuel supply apparatus. The flowchart which shows the aspect of the oil supply amount display of an oil supply apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Lubrication device 2 ... Housing 3, 4, 5 ... Lubrication system 6 ... Lubrication operation panel 7 ... Lubrication amount indicator 8 ... Indicator light 9 ... Designate oil type Equipment to be used 10 ... Equipment for refueling charges 11 ... Call button 12 ... Oil supply pipe 13 ... Motor 14 ... Pump 15 ... Control valve 16 ... Flow rate pulse transmitter 17. ..Flow meter 18 ... Discharge pipe 19 ... Fueling hose 20 ... Fueling nozzle 21 ... Nozzle hook 22 ... Nozzle switch 23 ... Automobile 24 ... Fuel tank 25 ... Fueling Port 26 ... Liquid level sensor 27 ... Transmitter 28 ... Lever 29 ... Valve 30 ... Discharge pipe 31 ... Receiver 32 ... Liquid level sensor 33 ... Insertion sensor 34・ ・ ・ 鍔 35 ・ ・ ・ Lubrication control device 36 ・ ・ ・ Counting means 37 ・ ・ ・ Total Time means 38 ... Motor drive means 39 ... Display drive means 40 ... Valve opening storage means 41 ... Valve drive means

Claims (3)

In a fueling device for an automobile provided with a liquid level sensor in a fuel tank and provided with a transmitter for transmitting a liquid detection signal of the liquid level sensor, a pump, a control valve and a flow meter are interposed in a fueling pipe of the fueling device, Connect the oil hose to the discharge pipe of the flow meter, provide a receiver to the oil nozzle provided at the tip of the oil hose, provide a nozzle switch to the nozzle hook to hang the oil nozzle, turn the nozzle switch on / off signal and receiver The received fluid detection signal is input to the oil supply control device, and the open / close signal and the drive / stop signal are input to the control valve from the oil supply control device to the control valve. In response, a fully open signal is output to the control valve, a drive signal is output to the motor for driving the pump, a first liquid detection signal of the liquid level sensor is received, and a close signal is output to the control valve for pump drive. Motor A stop signal is output, a small open signal is output to the control valve after a certain period of time, a drive signal is output to the pump drive motor, and the control signal is closed upon receipt of the second liquid detection signal of the liquid level sensor. And a control means for outputting a stop signal to the motor for driving the pump. The oil supply device according to claim 1, wherein a spear having an insertion sensor is provided in a discharge pipe of the oil supply nozzle, and the oil supply control device is provided with a control unit that enables an oil supply in response to an insertion signal from the insert sensor. . The oil supply device according to claim 1 or 2, wherein the oil supply nozzle is provided with a liquid level sensor, and the oil supply control device is provided with control means for receiving a liquid detection signal from the liquid level sensor and stopping the oil supply.

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