JPH0577896A - Refueling device - Google Patents

Abstract

(57) [Summary] [Purpose] If the fuel type of the fuel tank is different from the oil type of the refueling nozzle, the reset refueling that allows refueling only by removing the refueling nozzle is prohibited, and the fact that reset refueling cannot be accepted Is notified to the operator to prevent oil mixture. [Structure] The refueling device 1 has an oil type determination function (a function of determining whether or not the fuel tank oil type and the refueling nozzle oil type match).
And a reset refueling function (a function of driving the pump motor 4 to be in a refuelable state only on condition that the oil type determination function is canceled and the refueling nozzle 8 is removed from the nozzle housing portion 10),
A reset refueling prohibition function (a function of prohibiting the reset refueling function when the fuel tank oil type and the refueling nozzle oil type are different) is provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oil supply device having an oil type detection function, and particularly when it is determined that the tank oil type to be refueled is different from the oil type of the oil supply nozzle, only the oil supply nozzle is removed. The present invention relates to an oil supply apparatus suitable for use in the case of preventing oil mixture by prohibiting reset oil supply that enables oil supply and notifying an oil supply operator of a different oil type.

[0002]

2. Description of the Related Art Conventionally, in order to prevent accidental refueling, such as a refueling operator accidentally refueling a gasoline engine vehicle with light oil or a diesel engine vehicle with gasoline,
An oil supply device having an oil type discrimination function has been developed. In this type of lubricator with an oil type discriminating function, when a refueling worker removes the refueling nozzle from the nozzle housing part and inserts it into the refueling port of a fuel tank such as a vehicle, the intake pump inside the refueling device is driven to refuel. As a result of the oil vapor in the fuel tank being sucked toward the oil vapor sensor through the suction pipe that opens at the tip of the nozzle, the oil vapor sensor will detect the oil vapor concentration in the fuel tank as a voltage change. ing. Based on the detection output of the oil vapor sensor, the refueling device control unit determines that the oil vapor concentration in the fuel tank is higher than the oil type determination value for gasoline, and determines that it is gasoline, and the oil vapor concentration is the oil type determination value for gasoline. If it is smaller and larger than the oil type judgment value for light oil, it is judged as light oil. Then, when the fuel tank oil type matches the fuel nozzle nozzle oil type, the refueling device control unit drives the pump motor to start pumping the oil liquid from the underground tank by the refueling pump so that the fuel can be refueled. Is becoming In this case, an oil type determination mode in which the oil type determination function is activated (a mode in which the pump motor can be refueled by driving the pump motor on the condition that the fuel tank oil type and the refueling nozzle oil type match), or a released state A refueling device equipped with a switch for setting one of the reset refueling modes (a mode in which the pump motor can be driven to refuel only on the condition that the refueling nozzle is removed from the nozzle housing) has been developed. ing.

[0003]

By the way, the above-mentioned prior art has the following problems. For example, when refueling on the day of a strong wind on the site of the gas station,
Since the oil vapor generated from the oil level in the vehicle fuel tank is likely to diffuse due to the strong wind, problems such as not being able to accurately detect the oil vapor concentration in the fuel tank or misidentifying the oil type may occur. is there. Also, for example, when refueling a vehicle waiting for refueling that has been parked on the premises of the gas station for a long time, the amount of oil vapor generated from the oil level in the fuel tank decreases, so the concentration of oil vapor in the fuel tank decreases. May not be accurately detected, or a problem may occur in which the oil type is erroneously determined. For this reason, for example, when the oil type of the vehicle fuel tank cannot be determined when refueling with the oil refueling device for light oil, the oil refueling operator may use the oil vapor as described above despite the fuel tank oil type being light oil. It is misunderstood that the oil type cannot be discriminated due to the diffusion of the oil, etc., and the switch is operated to release the oil type discrimination mode of the lubricator, and the reset lubrication mode (only when the lubrication nozzle is removed from the nozzle housing (A mode in which the pump motor can be driven to refuel on the condition of
There is a risk of refueling. Therefore, when the oil type of the vehicle fuel tank is gasoline when the refueling operator operates the switch to perform reset refueling,
There was a problem that contamination (oil mixture) might occur.

The present invention effectively solves the above problem. When it is determined that the tank oil type to be refueled is different from the oil type of the refueling nozzle, it is possible to refuel only by removing the refueling nozzle. It is an object of the present invention to provide a refueling device capable of preventing mixed oil by prohibiting the above and notifying the refueling operator of the fact that the oil type is different.

[0005]

In order to achieve the above object, the present invention provides a fueling nozzle for refueling light oil, a nozzle housing for detachably housing the fueling nozzle, and a fueling nozzle for the nozzle housing. Nozzle detecting means for detecting attachment / detachment of oil, liquid feeding means for supplying light oil pumped up from a light oil storage tank to the refueling nozzle, and oil vapor detection for detecting oil vapor in a refueling target tank in which the refueling nozzle is inserted. And means for driving the liquid feeding means to permit refueling when the type of oil in the refueling target tank matches the light oil of the type of oil supplied by the refueling nozzle based on the detection result of the oil vapor detection means. In a configured refueling device, a setting means for setting a reset refueling function that drives the liquid delivery means and permits refueling only on condition that the refueling nozzle is removed from the nozzle housing portion, Upon detecting the removal of the refueling nozzle from the nozzle housing portion by the nozzle detecting means during oiling, based on the detection result of the oil vapor in the refueling target tank in which the refueling nozzle is inserted by the oil vapor detecting means, refueling is performed. When the setting means is operated after the oil type determination means for determining whether or not the target tank oil type is light oil, and after the oil type determination means determines that the target tank oil type is a different oil type other than light oil Is a reset refueling control means for disabling the setting operation by the setting means and disabling the reset refueling function, and when the reset refueling control means is disallowing the reset refueling function, notifies the disapproval And a notification means for

[0006]

According to the present invention, when the refueling operator removes the refueling nozzle from the nozzle housing portion and inserts the refueling nozzle into the refueling target tank, the oil vapor generated from the oil liquid level in the refueling target tank is detected by the oil vapor detecting means. Therefore, the oil type determining means determines the oil type of the oil liquid in the refueling target tank based on the detection result of the oil vapor detecting means. A refueling function that permits refueling only if the refueling operator removes the refueling nozzle from the nozzle housing after the refueling target tank determines that the refueling target tank is an oil type other than light oil. When set, the reset refueling control means invalidates the setting operation of the setting means by the refueling operator and disallows the reset refueling function. Thus, for example, it is possible to prevent a problem that the refueling operator mistakenly recognizes that the type of oil in the refueling target tank is erroneously operated, operates the setting means, and attempts to refuel by the reset refueling function. As a result, it is possible to prevent contamination (mixed oil) in the tank to be refueled.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a refueling device 1 for light oil according to the present embodiment. The refueling device 1 has an oil type determination function (a function of determining whether or not a fuel tank oil type of a vehicle or the like and a refueling nozzle oil type match). )
And a reset refueling function (a function of driving the pump motor to enable refueling only when the refueling nozzle is removed from the nozzle housing portion after canceling the oil type determination function) and a reset refueling prohibition function (vehicle, etc.). Of the fuel tank oil type and the oil type of the refueling nozzle are different from each other).

The refueling device 1 includes a pipe 2 connected to an underground tank (not shown) for storing light oil, an oil pump 3 for pumping light oil from the underground tank through the pipe 2, and the oil pump 3. A pump motor 4 for driving, a flow meter 5 for measuring the flow rate, a flow rate pulse transmitter 6 attached to the flow meter 5 for outputting a flow rate pulse proportional to the flow rate, and connected to the downstream end of the pipe 1. Refueling hose 7, refueling nozzle 8 connected to refueling hose 7 for refueling light oil, discharge pipe 9 disposed in refueling nozzle 8 for discharging light oil, and nozzle housing for removably housing refueling nozzle 8. And a nozzle switch 11 that outputs an OFF signal and an ON signal when the refueling nozzle 8 is hung on or removed from the nozzle housing portion 10.
A suction pipe 12 having one end opening to the tip of the discharge pipe 9 and the other end communicating with an intake / exhaust pipe described later to form an intake / exhaust passage for the oil vapor; and an intake / exhaust pipe for the oil vapor communicating with the suction pipe 12. Intake / exhaust pipe 13 serving as an exhaust passage, and the intake / exhaust pipe 1
3, an oil vapor sensor 14 for detecting the concentration of oil vapor sucked from the fuel tank via the suction pipe 12 and the intake / exhaust pipe 13, and an intake pump 15 for intake of oil vapor,
An exhaust pump 16 for exhausting oil vapor, a three-way valve 17 arranged on the proximal end side of the intake / exhaust pipe 13 that can be switched to the intake pump 15 side during intake, and to the exhaust pump 16 side during exhaust, and the amount of oil supplied is displayed. Display unit 20 including an oil supply amount display unit 18 and an oil type determination state display unit 19 for displaying the oil type determination state of the fuel tank
And reset refueling (release the oil type discrimination function to refuel nozzle 8
The reset switch 21 for setting the refueling for driving the pump motor 4 and permitting refueling only when is removed from the nozzle housing portion 10, and "reset switch acceptance" when the reset switch 21 is operated or An alarm 22 for notifying "reset switch not accepted", an oil type discrimination timer, and a cleaning timer are built-in to control each part of the oil supply device, and the fuel tank oil type is light oil based on the detection output of the oil vapor sensor 14. The control unit 23 determines whether (the same oil type as the oil supply nozzle oil type) or another oil type (an oil type different from the oil supply nozzle oil type).

Next, the oil type discrimination / lubrication processing by the lubrication system of this embodiment having the above-mentioned construction will be described with reference to FIGS. 2, 3 and 4. When a refueling worker removes the refueling nozzle 8 of the light oil refueling device 1 from the nozzle housing portion 10 and starts to refuel a fuel tank of a vehicle or the like, an ON signal is output from the nozzle switch 11 (step S1), The control unit 23 switches the three-way valve 17 to the intake pump 15 side and the intake pump 1
5 is driven by intake air (step S2). As a result, the oil vapor can be taken in through the suction pipe 12 and the intake / exhaust pipe 13 whose ends are open to the tip of the discharge pipe 9. After that, when the refueling operator inserts the refueling nozzle 8 into the vehicle fuel tank, the oil vapor generated from the oil level in the fuel tank passes through the suction pipe 12 and the intake / exhaust pipe 13, and the oil vapor sensor 14
The oil vapor sensor 14 detects the oil vapor concentration in the fuel tank and outputs a detection signal to the control unit 23 because the air is sucked toward the fuel tank. At this time, the control unit 23 resets the oil type discrimination timer and starts measuring the preset oil type discrimination time (step S3).

Based on the detected oil vapor concentration output from the oil vapor sensor 14, the control unit 23 determines whether the fuel tank oil type is light oil, that is, whether the fuel tank oil type is the same oil type as the light oil refueling nozzle oil type. It is determined whether or not (step S4). Control unit 2
If the fuel tank oil type is not light oil, the process proceeds to step S11, which will be described later, while if the fuel tank oil type is light oil, the oil type judging time is measured by the oil kind judging timer. Stop (step S5), and stop the intake pump 15 in the intake drive state (step S5).
6). As a result, the intake of oil vapor from the fuel tank is stopped. At this time, the discriminating oil type (light oil) of the fuel tank is displayed on the oil type discriminating state display section 19. Next, the control unit 23
Switches the three-way valve 17 to the exhaust pump 16 side and drives the exhaust pump 16 to exhaust (step S7). Thereby, the oil vapor sensor 14, the intake / exhaust pipe 13, the suction pipe 12
The remaining oil vapor is discharged from the opening end of the suction pipe 12 on the discharge pipe side. Next, the control unit 23 drives the pump motor 4 to start the pumping of the light oil from the underground tank by the oil supply pump 3 to make the oil supply possible (step S8). As a result, when the refueling operator opens the lever of the refueling nozzle 8 to refuel the fuel tank with a predetermined amount,
The control unit 23 measures the amount of refueling based on the flow rate pulse output from the flow rate pulse transmitter 6 and displays the amount of refueling on the amount of refueling display unit 18. Thereafter, the control unit 23 determines whether the nozzle switch 11 is ON (step S1).
0), when the nozzle switch 11 is ON (refueling nozzle 8
Is not returned to the nozzle housing portion 10), the nozzle switch 11 is turned off while the process of step S9 is performed.
In the case of (when the refueling nozzle 8 is returned to the nozzle housing portion 10), the process proceeds to step S24 described later.

On the other hand, when the control unit 23 determines in step S4 that the fuel tank oil type is not light oil, the fuel tank oil type is gasoline (fuel nozzle oil) based on the detected oil vapor concentration output from the oil vapor sensor 14. It is determined whether or not the seed is a different oil type) (step S11). When the control unit 23 determines that the fuel tank oil type is neither light oil nor gasoline, the control unit 23 proceeds to the process of step S18 described later, while when it determines that the fuel tank oil type is gasoline (different oil type), it determines the oil type. The measurement of the oil type determination time by the use timer is stopped (step S12), and the intake pump 15 in the intake drive state is stopped (step S13). At this time, the discriminating oil type (gasoline) of the fuel tank is displayed on the oil type discriminating state display section 19. Next, the control unit 23 causes the refueling operator to reset the refueling function (the oil type determination function is canceled and the refueling nozzle 8 becomes the nozzle housing unit 1).
The reset switch 2 is used to drive the pump motor 4 so that oil can be supplied only on the condition that it is removed from 0.
It is determined whether or not 1 is turned on (step S1
4). When the reset switch 21 is in the OFF state, the control unit 23 proceeds to the process of step S16, while when the reset switch 21 is turned on, an alarm sound indicating that the reset switch for prohibiting the refueling is not accepted (for example, A long alarm sound "Peep" is sounded from the alarm 22 (step S15). As a result, the refueling operator recognizes that reset refueling is prohibited. Next, if the reset switch 21 is OFF, the control unit 23 determines whether the nozzle switch 11 is ON or OFF (whether the refueling nozzle 8 is detached from the nozzle housing unit 10 or is in a reattached state).
Is determined (step S16), the nozzle switch 11 is turned off.
In the case of N, the process returns to the step S14, while in the case of the nozzle switch 11 being OFF, the three-way valve 17 is switched to the exhaust pump 16 side and the exhaust pump 16 is driven to exhaust (step S17). As a result, the oil vapor sensor 1
4, the oil vapor remaining in the intake / exhaust pipe 13 and the suction pipe 12 is exhausted from the discharge pipe side opening end of the suction pipe 12. After this, the process proceeds to step S24 described below.

On the other hand, if the control unit 23 determines in step S11 that the fuel tank oil type is neither light oil nor gasoline, it determines the oil type measured by the oil type determination timer that has started the time counting in step S3. It is determined whether or not the time has exceeded the set time, that is, whether or not it is impossible to determine the oil type (step S18). When the control unit 23 determines that the oil type determination time does not exceed the set time, the above step S
Returning to the process of 4, the oil type determination is performed, and when it is determined that the oil type determination time exceeds the set time (oil type determination is impossible), the time counting by the oil type determination timer is stopped (step S
19), the intake pump 15 in the intake drive state is stopped (step S20). At this time, the fact that the oil type of the fuel tank cannot be determined is displayed on the oil type determination display unit 19. next,
The control unit 23 performs a refueling operation by the refueling worker (refueling that enables the pump motor 4 to be refueled only on the condition that the oil type determination function is canceled and the refueling nozzle 8 is removed from the nozzle housing unit 10). Therefore, it is determined whether the reset switch 21 is turned on (step S21). Control unit 23
When the reset switch 21 is in the OFF state, the process proceeds to step S23, while when the reset switch 21 is turned on, a notification sound (for example, a beep) indicating that the reset switch accepts the reset refueling is accepted. A short alarm sound is emitted from the alarm 22 (step S22). After this, the processing shifts to the processing of step S7 and thereafter. In this case, in the refueling measurement process of step S9, the refueling amount is measured and displayed along with the reset refueling. Next, the control unit 23 turns off the reset switch 21.
In the case of, the nozzle switch 11 is turned on or off (whether the refueling nozzle 8 is detached from or re-engaged from the nozzle housing portion 10) (step S23), and if the nozzle switch 11 is turned on, the above is performed. On the other hand, if the nozzle switch 11 is OFF while returning to the process of step S21, the process proceeds to step S17.

Thereafter, the control unit 23 controls the above step S7.
The cleaning timer for measuring the cleaning time of the oil vapor sensor 14, the intake / exhaust pipe 13, and the suction pipe 12 by the exhaust pump 16 which has been driven by is reset, and also starts the measurement of a preset predetermined cleaning time. (Step S24). When the time measured by the cleaning timer exceeds the predetermined time (step S25), the controller 23 stops the time measured by the cleaning timer (step S26) and stops the exhaust pump 16 in the exhaust driving state (step S26). S27). As a result, the series of oil type determination / fuel supply processing is completed.

That is, according to the above-described embodiment, when the vehicle fuel tank oil type is different from the refueling nozzle oil type (light oil), the operation of the reset switch 21 by the refueling operator is not accepted, and the reset refueling (oil type) is not accepted. Releasing the discrimination function and refueling nozzle 8
Is supplied from the nozzle housing portion 10 only on the condition that the pump motor 4 is driven to permit refueling, and the reset fueling is prohibited to notify the refueling operator. When it is determined that the oil type is different from the oil type, or when it is determined that the oil type cannot be determined, for example, a refueling operator who mistakenly recognizes the vehicle fuel tank oil type as light oil is The type of oil in the fuel tank may be reduced due to the fact that the oil vapor in the fuel tank diffuses due to the blowing air, or the amount of oil vapor in the fuel tank is reduced because the vehicle waiting for refueling is left for a long time. It is possible to prevent a problem in which the reset switch 21 is operated by erroneously recognizing that it is erroneously determined and the reset refueling function is used to refuel. This makes it possible to prevent contamination (oil mixture).

[0015]

As described above, according to the present invention, a refueling nozzle for refueling light oil, a nozzle accommodating section for removably accommodating the refueling nozzle, and attachment / detachment of the refueling nozzle with respect to the nozzle accommodating section are detected. Nozzle detection means, liquid feeding means for supplying light oil pumped up from a light oil storage tank to the refueling nozzle, and oil vapor detection means for detecting oil vapor in a refueling target tank into which the refueling nozzle is inserted. After that,
In the oil supply device configured to drive the liquid supply means to permit oil supply when the oil type of the tank to be supplied with oil matches the light oil of the type of oil supplied by the oil supply nozzle based on the detection result of the oil vapor detection means, Setting means for setting a reset refueling function that drives the liquid feeding means and permits refueling only on condition that the nozzle is removed from the nozzle accommodating section; and After detecting the removal of the refueling nozzle, based on the detection result of the oil vapor in the refueling target tank in which the refueling nozzle is inserted by the oil vapor detection means, an oil type for determining whether or not the refueling target tank oil type is light oil After the determination means and the oil type determination means determine that the tank oil type to be refueled is a different oil type other than light oil, when the setting means is operated,
Reset refueling control means for disabling the setting operation by the setting means and disabling the reset refueling function, and notification for notifying that the reset refueling function is disallowed when the reset refueling control means is disallowed Since it is configured to include means, the effects of the following items can be obtained. When the fuel type of the tank to be refueled is different from the oil type (light oil) of the refueling nozzle, reset fueling can be prohibited because the refueling worker does not accept the setting of the reset refueling function from the setting means. At the same time, it is possible to notify the refueling operator that reset fueling is prohibited. Based on the above, when it is determined that the tank oil type to be refueled is a different oil type from the refueling nozzle oil type, or if it is determined that the oil type cannot be determined, for example, refueling work in which the tank oil type to be refueled is erroneously recognized as light oil For example, because the oil vapor in the tank to be refueled diffuses due to strong winds, or the amount of oil vapor in the tank to be refueled decreases because the vehicle waiting to be refueled is left for a long time, It is possible to prevent the problem of erroneously recognizing that the oil type has been erroneously determined and operating the setting means to perform refueling by the reset refueling function. As a result, it is possible to prevent contamination (mixed oil) in the tank to be refueled.

[Brief description of drawings]

FIG. 1 is a block diagram of an oil supply device according to an embodiment of the present invention.

FIG. 2 is a flowchart for explaining the operation of this embodiment.

FIG. 3 is a flow chart for explaining the operation of this embodiment.

FIG. 4 is a flowchart for explaining the operation of this embodiment.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Oil supply device 3 Oil supply pump (liquid feeding means) 4 Pump motor 8 Oil supply nozzle 10 Nozzle storage part 12 Suction pipe 13 Intake and exhaust pipe 14 Oil vapor sensor (oil vapor detection means) 15 Intake pump 16 Exhaust pump 19 Oil type discrimination status display part 21 reset switch (setting means) 22 alarm device (informing means) 23 control unit (determination means, oil type determination means, reset lubrication control means)

Claims (1)

[Claims] 1. A refueling nozzle for refueling light oil, a nozzle accommodating section for removably accommodating the refueling nozzle, nozzle detection means for detecting attachment / detachment of the refueling nozzle with respect to the nozzle accommodating section, and a pump from a light oil reservoir. It comprises a liquid feeding means for supplying the raised light oil to the refueling nozzle, and an oil vapor detecting means for detecting an oil vapor in a refueling target tank into which the refueling nozzle is inserted. Based on the result, when the oil type of the tank to be refueled matches the light oil of the oil type supplied by the refueling nozzle, the refueling device is configured to drive the liquid feeding means to permit refueling, wherein the refueling nozzle is moved from the nozzle housing portion. Setting means for setting the reset refueling function that drives the liquid feeding means and permits refueling only on the condition that it is removed, and the nozzle storage means stores the nozzle when refueling. After detecting the removal of the refueling nozzle from the oil refueling nozzle, it is determined whether the oil type of the refueling target tank is light oil based on the detection result of the oil vapor in the refueling target tank in which the refueling nozzle is inserted by the oil vapor detection means. And a setting operation by the setting means is invalidated when the setting means is operated after the oil type determination means determines that the tank oil type to be refueled is a different oil type other than light oil. A reset refueling control unit for disabling the reset refueling function; and a notifying unit for notifying that the reset refueling function is not permitted when the reset refueling control unit disallows the reset refueling function. And refueling equipment.