JP3979719B2 - Lubrication device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a fueling device, and more particularly, to a fueling device configured to reduce a time for supplying a preset amount of fueling when a preset fueling mode is set.
[0002]
[Prior art]
As a conventional oil supply device, for example, there is a device configured as shown in FIG.
In FIG. 7, 1 is an oil supply nozzle, 2 is an oil supply hose, 3 is a liquid supply line, 4 is a two-stage valve mechanism, 5 is a flow meter, 6 is a pump, 7 is a pump motor, and 8 is a nozzle hook. It is. When the oil supply nozzle 1 is removed from the nozzle hook 8, the nozzle switch 9 provided on the nozzle hook 8 is turned on, whereby the control device 10 starts the pump motor 7 and stores it in an underground tank (not shown). The oil liquid thus pumped is pumped up through the liquid feeding line 3.
[0003]
The two-stage valve closing type valve mechanism 4 disposed in the liquid feeding pipe 3 is a two-stage valve that opens and closes a large-diameter first-stage valve 13 that opens and closes the liquid-feeding pipe 3 and a small-diameter bypass pipe 14. It consists of a valve 15. In this valve mechanism 4, both the first-stage valve 13 and the second-stage valve 15 are opened at the start of preset fueling. When the fueling amount reaches a value immediately before the preset value, the first-stage valve 13 is closed, When the oil supply amount reaches the preset value, the two-stage valve 15 is also closed. The first-stage valve 13 having a large diameter has a larger overshoot amount when the valve is closed than the two-stage valve 15 having a small diameter. Therefore, by closing the first-stage valve 13 and the second-stage valve 15 of the valve mechanism 4 in a stepwise manner, the excess amount when the first-stage valve 13 is closed is compensated and the excess amount when the valve is closed is reduced. The preset preset value can be accurately refueled.
[0004]
When the discharge pipe 1a of the fueling nozzle 1 is inserted into the fueling port 11a of the fuel tank 11 of the automobile, the nozzle lever 1b of the fueling nozzle 1 is operated, and the built-in valve is opened, the liquid supply line The oil liquid pumped up by the pump 6 through the oil supply hose 2 and the oil supply nozzle 1 connected to 3 is supplied to the fuel tank 11.
After the refueling is started in this way, the refueling nozzle 1 is held in the valve opening operation state with the nozzle lever 1b locked by the lever hook.
[0005]
The fuel supply amount to the fuel tank 11 is measured by the flow meter 5, and the control device 10 calculates the fuel supply amount by integrating the flow rate pulses output from the flow rate transmitter 5a of the flow meter 5, and displays it (not shown). Display on the instrument.
Here, when refueling a predetermined amount designated by the customer, the preset oil amount is set by operating the preset switch, and then the nozzle lever 1b is operated to the valve opening position and locked to the lever hook. Then, the control device 10 integrates the flow rate pulses output from the flow rate transmitter 5a of the flow meter 5, and closes the first stage valve 13 of the valve mechanism 4 when the integrated flow rate value reaches a value immediately before the preset value. Let me speak. Thereafter, refueling is performed via the two-stage valve 15, and the instantaneous flow rate that is refueled by the two-stage valve 15 is reduced.
[0006]
Thereafter, when the flow value integrated by the flow meter 5 reaches a preset value, the two-stage valve 15 is closed to finish the preset fueling.
[0007]
[Problems to be solved by the invention]
However, in the fueling device configured as described above, when the nozzle lever 1b of the fueling nozzle 1 is hooked at the valve opening position, the valve opening degree of the fueling nozzle 1 changes depending on the hooking position of the nozzle lever 1b. Even if the first-stage valve 13 and the second-stage valve 15 of the valve mechanism 4 are opened, the flow rate of the oil discharged from the oil supply nozzle 1 may decrease.
[0008]
In the lever latching portion that latches the nozzle lever 1b of the fueling nozzle 1 at the valve opening position, the latching position can be changed by the operator's operation. For example, the nozzle lever 1b has a valve opening degree of 100%, 90%. The latching position can be changed in four stages such as%, 50%, and 30%. However, when the valve opening degree of the fuel nozzle 1 is fully opened (100%) or 90%, the oil discharged to the fuel filler port 11a jumps and scatters around due to the shape of the fuel filler port 11a of the fuel tank 11. Sometimes.
[0009]
In such a case, the operator at the filling station changes the nozzle lever locking position so that the valve opening degree of the filling nozzle 1 is 50% or 30%, thereby reducing the discharge amount to prevent scattering. Yes. Further, for example, when performing preset fueling, the operator may accidentally hook the nozzle lever 1b at a position where the valve opening degree of the fueling nozzle 1 is narrowed instead of the fully open position.
[0010]
Thus, in a state where the valve opening degree of the main valve built in the oil supply nozzle 1 is reduced, there is a problem that the instantaneous flow rate discharged from the oil supply nozzle 1 is reduced and the oil supply time is increased.
FIG. 8 is a graph showing changes in flow rate and oiling time caused by the difference in valve opening of the fueling nozzle 1.
[0011]
As shown in FIG. 8, graph I (shown by a solid line in FIG. 8) shows the relationship between the flow rate and the lubrication time when preset lubrication is performed with the nozzle lever 1 b of the lubrication nozzle 1 hooked at the fully open position. Indicates. Graph II (indicated by the alternate long and short dash line in FIG. 8) shows the flow rate-oiling time when preset oiling is performed with the nozzle lever 1b of the oiling nozzle 1 hooked at the half-open position (valve opening degree 50%). The relationship is shown.
[0012]
When the graph I and the graph II are compared, the oil supply time from the start of oil supply to the first stage valve closing when the nozzle lever 1b of the oil supply nozzle 1 is hooked to the fully open position is (T ₃ -T ₂ ). against, refueling time when is hooked nozzle lever 1b of the oil supply nozzle 1 in a half-open position takes longer and _{(T 5 -T 2) ((} T 3 -T 2) <(T 5 -T 2) ).
[0013]
Further, when the nozzle lever 1b of the oil supply nozzle 1 is hooked at the fully open position, the oil supply time by the two-stage valve closing is (T ₄ -T ₃ ), whereas the nozzle lever 1b of the oil supply nozzle 1 is set to the half-open position. refueling time when is hooked is taking longer and _{(T 6 -T 5) ((} T 4 -T 3) <(T 6 -T 5)).
For this reason, when preset oil supply is performed with the nozzle lever 1b of the oil supply nozzle 1 locked in the half-open position, the instantaneous oil supply flow rate is considerably reduced after the first stage valve is closed. There is a problem that the amount of change also becomes slow and the oiling time takes too long.
[0014]
Then, an object of this invention is to provide the oil supply apparatus which solved the said subject.
[0015]
[Means for Solving the Problems]
In order to solve the above problems, the present invention has the following features.
The present invention is a fueling nozzle that differs in the amount of oil discharged depending on the valve opening;
A flow meter for measuring the flow rate of the oil discharged from the oil supply nozzle;
It consists of a two-stage valve with adjustable valve opening in two stages,
And fully open the two-stage valve in the oil supply start time, after the amount of oil on the basis of the oil supply amount measured by the flow meter is one step closed upon reaching a predetermined amount before the preset value, the preset value In the oil supply device that closes in two stages so that the oil supply amount matches
Setting a valve control means for changing the operation timing of the 1-stage closing of the two-stage valve in response to the instantaneous flow rate measured by the flow meter,
The valve control means is characterized in that the predetermined amount is changed based on the operation timing of the first-stage closing of the two-stage valve set in advance in association with each of a plurality of instantaneous flow rates .
[0016]
Therefore, according to the present invention, the valve control means for changing the operation timing of the first-stage closing of the two-stage valve according to the instantaneous flow rate measured by the flow meter is provided, and the valve control means has a plurality of instantaneous flow rates. In order to change the predetermined amount based on the operation timing of the first-stage closing of the two-stage valve that is set in advance in correspondence with , for example, when the instantaneous flow rate is small, the operation timing of the first-stage valve closing is delayed longer The time required from the first stage closing to the second stage closing can be shortened by extending the opening time of the two-stage valve fully open , so the lubrication time due to the small flow rate after the first stage closing is shortened. Accordingly, the waiting time until the end of preset refueling can be shortened.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of a fueling device according to the present invention will be described with reference to the drawings.
FIG. 1 is a configuration diagram of an embodiment of a fueling device according to the present invention.
As shown in FIG. 1, the refueling device 21 is installed at a refueling site of a refueling station, and a refueling hose 25 connected to a refueling nozzle 23 is pulled out on the side surface of the device main body 22. The fueling nozzle 23 is normally hooked on a nozzle hook 24 provided on the side surface of the apparatus main body 22. For example, when a customer's automobile arrives at a fueling station, the operator removes the fueling nozzle 23 from the nozzle hook 24 and the vehicle Fuel is inserted into the fuel inlet 26a of the fuel tank 26.
[0018]
The oil supply nozzle 23 has an oil supply hose 25 connected to a joint 23c provided on a side surface of a nozzle body 23b in which a valve mechanism that opens when the nozzle lever 23a is operated.
In the apparatus main body 22, the oil supply hose 25 is connected to the liquid supply line 30. This liquid supply line 30 extends to the underground tank 31 and is inserted in the middle of which a pump 32, a flow meter 34, and a two-stage valve mechanism 37 are disposed. The valve mechanism 37 includes a first-stage valve 38 having a large diameter that opens and closes the liquid-feed line 30, a bypass line 30 a that branches from the liquid-feed line 30 and bypasses the first-stage valve 38, and a bypass line that has a small diameter It comprises a two-stage valve 39 that opens and closes 30a. In the valve mechanism 37, both the first-stage valve 38 and the second-stage valve 39 are opened at the start of preset fueling. When the fueling amount reaches a value immediately before the preset value, the first-stage valve 38 is first closed. The two-stage valve 39 is also closed when the oil supply amount reaches a preset value.
[0019]
In addition, an oil supply amount indicator 36 for displaying an oil supply amount obtained by integrating the instantaneous flow rate measured by the flow meter 34 is disposed on the front surface of the apparatus main body 22.
The nozzle switch 24 a of the nozzle hook 24, the pump motor 32 a of the pump 32, the flow rate pulse transmitter 34 a of the flow meter 34, and the oil supply amount indicator 36 are connected to the control circuit 35.
[0020]
When the oil supply nozzle 23 is removed from the nozzle hook 24 and a signal from the nozzle switch 24a is input, the control circuit 35 starts the pump motor 32a of the pump 32 and pumps up the oil in the underground tank 31. Further, when the nozzle lever 23 a of the fuel supply nozzle 23 is operated, fuel supply to the fuel tank 26 is started, and a flow rate pulse is output from the flow rate pulse transmitter 34 a of the flow meter 34 to the control circuit 35.
[0021]
Then, the control circuit 35 integrates the flow rate pulses output from the flow rate pulse transmitter 34 a and displays the oil supply amount on the oil supply amount display 36. In addition, the control circuit 35 performs full tank fueling control or preset fueling control as will be described later.
FIG. 2 is a block diagram of the control circuit 35.
As shown in FIG. 2, the control circuit 35 inputs and outputs signals to and from a CPU 40 that executes a refueling control process to be described later, a RAM 41 that stores each data, and a ROM 42 that stores a preset refueling control program. And an I / O interface 43. The RAM 41 maintains a storage state by supplying power from the battery 44. The I / O interface 43 is connected to a nozzle switch 24 a of the nozzle hook 24, a flow rate pulse transmitter 34 a of the flow meter 34, a display 36, and a preset switch 45.
[0022]
In this embodiment, the ROM 42 corresponds to the one-stage valve closing operation timing data table 46 of the valve mechanism 37 corresponding to the discharge amount from the oil supply nozzle 23 described later and the instantaneous flow rate measured by the flow meter 34. A control program is stored as valve control means for changing the valve closing operation timing of the first stage valve 38 to be delayed.
The preset switch 45 is installed in the vicinity of the nozzle hook 24, for example, and is operated only when preset fueling is performed. Therefore, if the preset value (target oil amount) is input by operating the preset switch 45 before starting the fueling, the preset fueling mode is set.
[0023]
FIG. 3 is a view schematically showing a one-stage valve closing operation timing data table of the valve mechanism 37.
As shown in FIG. 3, the first-stage valve closing operation timing data table 46 stores the first-stage valve closing operation timings of the first to sixth points. For example, the first point of the first stage valve closing operation timing is when the instantaneous flow rate is 70 L / min or more, the amount of oil supply is 1 L before the preset value. The second point of the first stage valve closing operation timing is when the instantaneous flow rate is 60 L / min or more, the amount of oil supply is 0.8 L before the preset value. The third point of the first stage valve closing operation timing is when the instantaneous flow rate is 50 L / min or more, the oil supply amount is 0.6 L before the preset value.
[0024]
Furthermore, the fourth point of the first stage valve closing operation timing is that when the instantaneous flow rate is 40 L / min or more, the oil supply amount is 0.4 L before the preset value. The fifth point of the first stage valve closing operation timing is that when the instantaneous flow rate is 30 L / min or more, the oil supply amount is 0.3 L before the preset value. The sixth point of the first stage valve closing operation timing is that when the instantaneous flow rate is 20 L / min or more, the oil supply amount is 0.2 L before the preset value.
[0025]
Here, the control processing I at the time of preset refueling executed by the control circuit 35 will be described with reference to the flowchart of FIG.
In FIG. 4, when a preset value (target oil supply amount) is input by the preset switch 45 in step S <b> 11 (hereinafter, “step” is omitted), the control circuit 35 starts the preset oil supply mode. Then, when an operator at the filling station removes the filling nozzle 32 from the nozzle hook 24 and the nozzle switch 24a is turned on, the pump motor 32a of the pump 32 is activated to start preset filling. Thereafter, the valve closing operation timing of each point stored in the first stage valve closing operation timing data table 46 based on the latching position of the nozzle lever 3a of the oil supply nozzle 33, that is, the instantaneous flow rate corresponding to the valve opening degree of the oil supply nozzle 33. Sequentially check whether is applicable.
[0026]
In the next S12, it is checked whether or not the current oil supply amount is 1 L (liter) before the preset value (target oil supply amount). Then, when the current oil supply amount reaches 1 liter before the preset value (target oil supply amount), the process proceeds to S13 to check whether the current instantaneous flow rate is 70 L / min or more.
In S13, when the instantaneous flow rate is 70 L / min or more, the process proceeds to S14 and the first-stage valve 38 is closed. As a result, refueling with a small flow rate is continued through the two-stage valve 39.
[0027]
In next S15, it is checked whether or not the current oil supply amount has reached a preset value (target oil supply amount) by the oil supply by the two-stage valve 39. When the current oil supply amount reaches a preset value (target oil supply amount), the two-stage valve 39 is closed in S16 and the pump motor 32a of the pump 32 is stopped to end the preset oil supply.
In S13, when the instantaneous flow rate is not 70 L / min or more, the process proceeds to S17, and it is checked whether or not the current oil supply amount is 0.8 L (liter) before the preset value (target oil supply amount). Then, when the current oil supply amount reaches 0.8 liters before the preset value (target oil supply amount), the process proceeds to S18 to check whether the current instantaneous flow rate is 60 L / min or more.
[0028]
In S18, when the instantaneous flow rate is 60 L / min or more, the process proceeds to S14, and after closing the first-stage valve 38, the processes of S15 and S16 are executed to finish the preset refueling.
In S18, when the instantaneous flow rate is not 60 L / min or more, the process proceeds to S19, and it is checked whether or not the current oil supply amount is 0.6 L (liter) before the preset value (target oil supply amount). Then, when the current oil supply amount reaches 0.6 liters before the preset value (target oil supply amount), the process proceeds to S20 to check whether the current instantaneous flow rate is 50 L / min or more.
[0029]
In S20, when the instantaneous flow rate is 50 L / min or more, the process proceeds to S14, and after closing the first-stage valve 38, the processes of S15 and S16 are executed to finish the preset refueling.
In S20, when the instantaneous flow rate is not 50 L / min or more, the process proceeds to S21, and it is checked whether or not the current oil supply amount is 0.4 L (liter) before the preset value (target oil supply amount). Then, when the current oil supply amount reaches 0.4 liters before the preset value (target oil supply amount), the process proceeds to S22 to check whether the current instantaneous flow rate is 40 L / min or more.
[0030]
In S22, when the instantaneous flow rate is 40 L / min or more, the process proceeds to S14, the first-stage valve 38 is closed, and the processes of S15 and S16 are executed to finish the preset refueling.
In S22, when the instantaneous flow rate is not 40 L / min or more, the process proceeds to S23, and it is checked whether or not the current oil supply amount is 0.3 L (liter) before the preset value (target oil supply amount). Then, when the current oil supply amount reaches 0.3 liters before the preset value (target oil supply amount), the process proceeds to S24 to check whether the current instantaneous flow rate is 30 L / min or more.
[0031]
In S24, when the instantaneous flow rate is 30 L / min or more, the process proceeds to S14, and after closing the first stage valve 38, the processes of S15 and S16 are executed to finish the preset fueling.
In S24, when the instantaneous flow rate is not 30 L / min or more, the process proceeds to S25, and it is checked whether or not the current oil supply amount is 0.2 L (liter) before the preset value (target oil supply amount). Then, when the current oil supply amount reaches 0.2 liters before the preset value (target oil supply amount), the process proceeds to S14, and after closing the first stage valve 38, the processes of S15 and S16 are executed and preset. Stop refueling.
[0032]
Thus, the combination of the latching position of the nozzle lever 3a of the oil supply nozzle 33, that is, the instantaneous flow rate corresponding to the valve opening of the oil supply nozzle 33, and the numerical value just before the oil supply amount reaches the preset value (target oil supply amount). Since the valve closing operation timing of the stage valve 38 can be changed, the first stage valve 38 can be kept in an open state until the oil supply amount is as close to the preset value (target oil supply amount) as possible. Therefore, after the valve closing operation of the first-stage valve 38, it is possible to shorten the oil supply time of a small flow rate by the second-stage valve 39. Therefore, the waiting time from when the first-stage valve 38 is closed to when the second-stage valve 39 is closed and the preset refueling is completed can be shortened.
[0033]
Next, the control process II at the time of preset refueling executed by the control circuit 35 will be described with reference to the flowchart of FIG.
In FIG. 5, when a preset value (target oil supply amount) is input from the preset switch 45 in S31, the control circuit 35 starts the preset oil supply mode. Then, when an operator at the filling station removes the filling nozzle 32 from the nozzle hook 24 and the nozzle switch 24a is turned on, the pump motor 32a of the pump 32 is activated to start preset filling.
[0034]
In next S32, the flow rate pulse output from the flow rate pulse transmitter 34a of the flow meter 34 is read. In S33, the instantaneous flow rate corresponding to the latching position of the nozzle lever 3a of the fuel nozzle 33, that is, the valve opening of the fuel nozzle 33, is calculated from the integrated value of the flow rate pulses. Subsequently, the first-stage valve closing operation timing data table 46 of the valve mechanism 37 corresponding to the discharge amount from the fuel supply nozzle 23 stored in the ROM 42 described above is read in S34.
[0035]
In the next S35, the instantaneous flow calculated in S33 is compared with the first-stage valve closing operation timing data table 46, a point corresponding to the instantaneous flow is selected, and the valve closing operation timing (one-stage closing before the preset value) is selected. Obtain the valve operation flow rate value).
In S36, the one-stage valve closing operation flow rate value before the preset value corresponding to the instantaneous flow rate is set as the valve closing operation timing. The above-mentioned first-stage valve closing operation flow rate value is the valve closing operation timing, for example, when the instantaneous flow rate is 70 L / min or more and the oil supply amount is 1 L before the preset value, as in the case of the flowchart of FIG. 3 described above. When the instantaneous flow rate is 60 L / min or more, the valve closing operation timing is 0.8 L before the oil supply amount is a preset value.
[0036]
Further, in the same manner as described above, when the instantaneous flow rate is 70 L / min or more and 0.6 L before the preset value, and when the instantaneous flow rate is 60 L / min or more, the preset value is 0.4 L, the instantaneous flow rate is 50 L / min or more and the preset value is 0. The valve closing operation timing is 0.3L before the preset value when the instantaneous flow rate is 40L / min or more before 4L, and 0.2L before the preset value when the instantaneous flow rate is 30L / min or more.
[0037]
Subsequently, in S37, it is checked whether or not the oil supply amount has reached the first-stage valve closing operation flow rate value set in S36. In S37, when the oil supply amount reaches the first-stage valve closing flow rate value set in S36, the process proceeds to S38 and the first-stage valve 38 is closed. As a result, refueling with a small flow rate is continued through the two-stage valve 39.
In the next S39, it is checked whether or not the oil supply amount by the two-stage valve 39 has reached a preset value (target oil supply amount). Then, when the current oil supply amount reaches a preset value (target oil supply amount), the two-stage valve 39 is closed in S40. In step S41, the pump motor 32a of the pump 32 is stopped, and the preset oil supply is terminated.
[0038]
In this way, the instantaneous flow rate at the time of refueling corresponding to the latching position of the nozzle lever 3a of the refueling nozzle 33, that is, the valve opening degree of the refueling nozzle 33, is obtained, and the first stage valve 38 at the closing operation timing corresponding to this instantaneous flow rate. Therefore, the first-stage valve 38 can be kept open until the oil supply amount is as close as possible to the preset value (target oil supply amount). Therefore, after the valve closing operation of the first-stage valve 38, it is possible to shorten the oil supply time of a small flow rate by the second-stage valve 39. Therefore, the waiting time from when the first-stage valve 38 is closed to when the second-stage valve 39 is closed and the preset refueling is completed can be shortened.
[0039]
FIG. 6 is a graph showing a result when the valve closing operation timing of the first stage valve 38 is changed according to the instantaneous flow rate by the control processing of FIG. 4 or FIG.
As shown in FIG. 6, the graph I ′ (shown by a solid line in FIG. 6) shows the flow rate-oiling time when preset oiling is performed with the nozzle lever 33 a of the oiling nozzle 33 hooked at the fully open position. Show the relationship. Graph II ′ (indicated by the alternate long and short dash line in FIG. 6) shows a flow rate-oiling time when preset oiling is performed by engaging the nozzle lever 33a of the oiling nozzle 33 at the half-open position (valve opening degree 50%). Shows the relationship.
[0040]
In the above graph I ′, since the oil supply time from the start of oil supply to the first-stage valve closing when the nozzle lever 33a of the oil supply nozzle 33 is locked at the fully open position is (T ₃ ′ −T ₂ ), FIG. This is extended from the conventional oil supply time (T ₃ −T ₂ ) shown in graph I ((T ₃ −T ₂ ) <(T ₃ ′ −T ₂ )). Therefore, and oil absorption of up to one-stage closing is increased, refueling time is reduced by that amount 2 Danben _{39 ((T 4 -T 3)} > (T 4 '-T 3')). In addition, when the nozzle lever 33a of the oil supply nozzle 33 is hooked at the fully open position, since the instantaneous flow rate is large, the overshoot amount increases, and the reduction rate of the oil supply time by the two-stage valve 39 is small accordingly.
[0041]
In graph II ′, the oil supply time from the start of oil supply to the first-stage valve closing when the nozzle lever 33a of the oil supply nozzle 33 is latched at the half-open position is (T ₅ ′ −T ₂ ). This is extended from the conventional oiling time (T ₅ −T ₂ ) shown in graph II of (T ₅ −T ₂ ) <(T ₅ ′ −T ₂ )). Accordingly, the amount of oil supplied up to the first-stage valve is increased, and accordingly, the oil supply time by the second-stage valve 39 is shortened ((T ₆ −T ₅ )> (T ₆ ′ −T ₅ ′)).
[0042]
The shortening of the fueling time by the two-stage valve 39 becomes larger as the valve opening degree of the fueling nozzle 33 is reduced. Accordingly, the effect of shortening the oiling time increases as the instantaneous flow rate discharged from the oiling nozzle 33 decreases.
In the above-described embodiment, the oil supply device for supplying fuel to the fuel tank of the automobile is given as an example. However, the present invention is not limited to this, and it is needless to say that the present invention can also be applied to an oil supply device configured to supply oil to other tanks. .
[0043]
【The invention's effect】
As described above, according to the present invention, the valve control means for changing the operation timing of the first-stage closing of the two-stage valve according to the instantaneous flow rate measured by the flow meter is provided, and the valve control means includes a plurality of instantaneous In order to change the predetermined amount based on the operation timing of the first-stage closing of the two-stage valve set in advance corresponding to each flow rate, for example, when the instantaneous flow rate is small, the operation timing of the first-stage closing is delayed longer. As a result, the time required from the first stage closing to the second stage closing can be shortened by extending the opening time of the two-stage valve fully open , so the oiling time due to the small flow rate after the first stage closing is shortened. Therefore, the waiting time until the end of preset refueling can be shortened accordingly.
[Brief description of the drawings]
FIG. 1 is a configuration diagram showing a schematic configuration of an embodiment of a fueling device according to the present invention.
FIG. 2 is a block diagram of a control circuit 35. FIG.
FIG. 3 is a diagram schematically showing a one-stage valve closing operation timing data table of the valve mechanism 37;
FIG. 4 is a flowchart for explaining a control process I during preset fueling executed by a control circuit 35;
FIG. 5 is a flowchart for explaining a control process II during preset fueling executed by a control circuit 35;
6 is a graph showing a result when the valve closing operation timing of the first stage valve 38 is changed in accordance with the instantaneous flow rate by the control processing of FIG. 4 or FIG.
FIG. 7 is a configuration diagram showing a main part for explaining a conventional fueling device.
FIG. 8 is a graph showing changes in flow rate and fueling time caused by the difference in valve opening of the fueling nozzle 1;
[Explanation of symbols]
21 Oil supply device 23 Oil supply nozzle 23a Nozzle lever 24 Nozzle hook 24a Nozzle switch 25 Oil supply hose 26 Fuel tank 27 Discharge pipe 30 Liquid feed conduit 32 Pump 32a Pump motor 34 Flow meter 35 Control circuit 37 Valve mechanism 38 First stage valve 39 Second stage Valve 40 CPU
41 RAM
42 ROM
45 Preset switch 46 1 stage valve closing timing data table

Claims (1)

An oiling nozzle that varies in the amount of oil discharged depending on the valve opening;
A flow meter for measuring the flow rate of the oil discharged from the oil supply nozzle;
It consists of a two-stage valve with adjustable valve opening in two stages,
And fully open the two-stage valve in the oil supply start time, after the amount of oil on the basis of the oil supply amount measured by the flow meter is one step closed upon reaching a predetermined amount before the preset value, the preset value In the oil supply device that closes in two stages so that the oil supply amount matches
Setting a valve control means for changing the operation timing of the 1-stage closing of the two-stage valve in response to the instantaneous flow rate measured by the flow meter,
The said valve control means changes the said predetermined amount based on the operation | movement timing of the 1st-stage valve closing of the said 2 stage-type valve previously set corresponding to each of several instantaneous flow volume, The oil supply apparatus characterized by the above-mentioned .

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