JPH03313B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Application The present application relates to a refueling device used when refueling a car at a refueling station.

(b) Prior art There is an exact stop refueling system in which a reservation operation is performed when the fuel tank of an automobile is almost full, and then refueling is automatically stopped when the next rounded refueling value is reached or slightly before it. A fixed-quantity stop lubrication system is used, which is set in advance and automatically stops lubrication when the customer's desired lubrication value (set value) is reached or slightly below it.

The reservation operation in the exact stop refueling system as seen in Japanese Patent Publication No. 51-27884 can be performed by using a reservation switch, or by opening and closing the built-in valve of the refueling nozzle and changing the flow rate in a predetermined pattern. In some cases, the reservation switch is also used for subsequent additional refueling, and in others, a dedicated switch is provided.

On the other hand, in the fixed-rate stop lubrication system as seen in Japanese Patent Application Laid-open No. 55-79299, the lubrication value can be set using a row of keys that each indicate a predetermined specific lubrication value, or by using a numeric keypad to set the lubrication value freely. There are several options to choose from; in the former case, a lamp is provided to indicate that each key has been operated, while in the latter case, a separate indicator is provided to display the set refueling value.

In addition, models that use the constant stop lubrication system usually also have the exact stop lubrication system.

(c) Problems As mentioned above, in the case of a fixed-dose stop refueling system, many keys are required to set the desired refueling value, and many lamps or indicators to display numerical values are separately required. In order to handle flammable and explosive oils such as oils, it was necessary to adopt an explosion-proof method with special electrical circuit or structural specifications, which resulted in the problem of being expensive and bulky.

The present invention provides a fixed amount stop lubrication system which also has a stop lubrication system, in which the key, the lamp,
The present invention proposes a refueling device that does not require a display or the like.

(d) Configuration Each functional means constituting the conventional exactly stop refueling system, namely, a refueling amount counting means and its display means, a reservation signal generating means, and a determination to stop refueling at the next exact value upon generation of the reservation signal. In addition to the additional refueling command means, means for holding a constant multiple of the exact value, and comparison means for terminating the refueling when the refueling amount reaches the previous constant multiple.

(e) Effect With the above-described configuration of the present invention, when a reservation signal is generated during refueling and refueling is temporarily stopped at the next exact value, a constant multiple of the refueling value at this time is set as the customer's desired value. When the fuel is held and additional oil is supplied to the desired value, the oil supply is automatically terminated.

(F) Embodiment In Figs. 1 and 2, 2 is a refueling device, which includes an oil supply amount indicator 4, an oil type indicator 6, and a control section 8 for later operation.
A display unit 10 containing a display unit 10, and a weighing unit 12, 12', each housed in an independent case.
12''.

The metering units 12, 12', and 12'' are for regular gasoline, high-octane gasoline, and light oil, respectively, and their arrangement can be changed or additions or deletions can be made as necessary.

These measuring units 12, 12', and 12'' share one display 4, and the type of oil in use is displayed on the display 6, but each display unit is used only selectively. The system that enabled this, the connection between each display unit and each display, and the providential system are not directly related to the patent of this application, so they will be omitted, and only the relationship between the display unit 10 and the weighing unit 12 will be representatively explained below. It shall be.

14 is a motor that rotates the pump 16, and the oil pumped out by the pump 16 is measured by a flow meter 18 and then sent to a hose 20 and an oil supply nozzle 22.

A pulse transmitter 24 outputs one pulse signal a every time the flowmeter 18 measures a unit amount of oil (for example, 1/100 liter).

Reference numeral 26 designates a nozzle case in which the nozzle 22 is stored when not in use, and reference numeral 28 is associated with this case 26, and when the nozzle 22 is stored, its output signal, the nozzle signal b, is in the L (low) state and cannot be removed. 30 is a setting switch (reservation signal generating means) which outputs a refueling stop reservation signal c (one pulse).

32 is a foldable desk, 34 is a shelf for displaying products, 36 is a lid of the shelf 34, and 38 is a foldable desk on which to operate an information processing unit 40 including a slip issuing machine, a card reader (both not shown), etc. 42 is a bulkhead that separates the unit 10 from above to prevent dangerous gas from entering upwards, 44 is a removable column used for reinforcement during transportation, and is generally removed after installation, but is attached. It is sometimes left as is and used to hang small signs etc.

Next, FIG. 3, which is a block diagram for the combination shown in FIG. 2, will be explained.

50 is a counting circuit that counts the number of pulse signals a and outputs the counted value as an oil supply value signal d; 52 is a counter circuit that reads the oil flow velocity from the input interval of pulse signals a and inertia due to oil flow etc. after commanding to stop oil supply; 54 is a refueling inertia value setting circuit which selects a value corresponding to the excess amount of oil that flows out from pre-stored values and outputs it as an inertia signal e; 54 is a post-refueling value when the refueling stop reservation signal c is input a determination circuit that outputs a refueling stop signal f (one pulse) when the difference between the value of the signal d and the next value with no fractions (all numbers below the decimal point are zero) matches the value of the inertia signal e;
56 is the motor 14 when the nozzle signal b is in the H state.
A motor control circuit 58 energizes and de-energizes when the motor 14 is in the L state, and 58 is an energizer that outputs a re-energizing signal h when the refueling stop reservation signal c is input on the condition that the motor 14 is de-energized. The signal generating circuit (additional refueling command means) 60 reads the value of the refueling value signal d when the signal h is input, rounds the value to the nearest whole number, and multiplies the obtained value by a constant value of 10. This is a comparator circuit that stores and holds the calculated value, thereafter calculates the difference between this calculated value and the value of the refueling value signal d, and outputs the refueling stop signal i when this difference value and the value of the inertia signal e match. .

In the above configuration, the following explanation is based on the premise that a customer comes to the store and requests 30 liters.

When the nozzle 22 is removed from the case 26, the nozzle signal b output from the switch 28 changes from the L state to the H state, which causes the motor control circuit 56 to energize the motor 14, as well as the counting circuit 50 and the determination circuit. 54, return the comparator circuit 60 to zero.

When the built-in valve (not shown) of the nozzle 22 is opened to supply oil, the pulse signal a corresponding to the amount of oil measured by the flow meter 18 is output from the pulse transmitter 24, and the number of pulse signals a is outputted from the counting circuit. 50, and the result is numerically displayed on the display 4 as the amount of oil supplied.

When the setting switch 30 is operated to output the refueling stop reservation signal c (one pulse) while the display value on the display 4 is between 2 liters and 3 liters, the determination circuit 54 determines the value of the refueling value signal d and the next fraction. When the difference from the value without (300 liters) matches the value of the inertia signal e output from the refueling inertia value setting circuit 52 after reading the flow rate at this time, a refueling stop signal f is output and given to the motor control circuit 56. , de-energizes the motor 14. A pump 16 is connected to the motor 14, which exerts a large rotational inertia, and due to the inertia of the oil flow, the motor 14 rotates for a short time after de-energization and pumps out oil, resulting in exactly 300 liters. Refueling will be stopped until (the stop refueling has just been completed). The refueling stop reservation signal c is also given to the energizing signal generation circuit 58, but since the motor 14 is energized at this time, the signal c is not received and the re-energizing signal h is not output.

After this, when the setting switch 30 is operated again to generate the refueling stop reservation signal c, the motor 1
4 is de-energized, the energizing signal generating circuit 58 accepts the signal c this time and outputs the signal h, which is applied to the motor control circuit 56 to re-energize the motor 14 and also to the comparator circuit 60. In addition,
This refueling stop reservation signal c is also given to the determination circuit 54, but since the motor 14 is de-energized at this time, the determination circuit 54 does not receive the signal c.

When the reenergization signal h is input, the comparator circuit 60 takes in the value of the refueling value signal d at that time and rounds off the value after the decimal point (just as the refueling value at the end of stop refueling is 299 liters instead of 300 liters). hot
(This is done in order to consider this as 300 liters even if it is 301 liters) The resulting value is multiplied by a predetermined constant (10 in this case) to make 30 liters, and this number (calculated value) is retained. do.

When the motor 14 is re-energized, additional refueling is performed, and when the difference between the count value of the counting circuit 50 and the value of the inertia signal e outputted from the refueling inertia value setting circuit 52, refueling is performed from the comparator circuit 60. A stop signal i is output and the motor 14 is deenergized again. In this case, as in the case described above, lubrication is performed for a short period of time due to inertia, and as a result, lubrication ends at exactly 30 liters (fixed quantity stop lubrication complete).

In this case, in order for the fixed amount stop refueling value to be 30 liters, the refueling must first be stopped at exactly 3 liters as the stop refueling value.
If you make a mistake and stop at exactly 2 liters, operate setting switch 30 to set motor 1.
4 is reenergized and additional lubrication is performed, and the lubrication value becomes 2.
All you have to do is operate the switch 30 between the time when it exceeds 1 liter and reach 3 liters to stop the oil again exactly at 3 liters. In this case, the oil supply value that was taken in by the comparator circuit 60 when the oil was stopped at 2 liters earlier is sufficient. The value of signal d (2 liters) is rewritten to 3 liters, and 30 liters is held as the constant stop refueling value.

After fixed amount stop lubrication is completed, move the nozzle 22 to case 2.
When it returns to 6, the nozzle signal b from switch 28 becomes H.
The state returns to the L state and returns to the initial state, where it receives the next visitor.

In the above embodiment of the present application, the pump 16 and the motor 14
The timing of outputting the lubrication stop signals f and i was set in consideration of the inertia caused by the oil flow and the oil flow, but it is necessary to take these inertia into consideration by changing the flow velocity just before the stop lubrication value or the constant stop lubrication value. In the case where the oil supply inertia value setting circuit 52 is configured to automatically throttle the oil supply value until it disappears, the determination circuit 54 outputs the stop signal f when the value of the oil supply value signal d reaches a value with no fractions. Output and comparison circuit 6
0, the stop signal i may be output when the held calculated value and the value of the signal d match.

In addition, although the embodiments of this application have been described for a type of refueling device that is fixedly installed on the ground, it can also be applied to a type of refueling device that is suspended from the ceiling. It is also possible to use

(g) Effects As mentioned above, the constant multiplication value of the lubrication value when lubrication is stopped using the stop lubrication method is held as the set value in the fixed stop lubrication method, and by performing additional lubrication, the set value is automatically set. Since refueling is terminated at the same time, many expensive and bulky keys, lamps, or numerical displays required for conventional fixed-quantity stop refueling are unnecessary, and an inexpensive and highly efficient refueling device can be obtained.

[Brief explanation of the drawing]

Fig. 1 is an outline drawing showing each part of the oil supply system, Fig. 2 is a representative representation of the relationship between the display unit 10 and metering unit 12 in Fig. 1, and Fig. 3 is a diagram showing the electric circuit in Fig. 2. It is a diagram shown in blocks. 10... Display unit, 12, 12', 12''...
...Measuring unit, 18...Flow meter, 22...Nozzle, 32...Desk, 34...Shelf, 38...Step stool,
42... Bulkhead, 44... Pillar.

Claims (1)

[Claims] 1 An oil supply path consisting of a pump, a flowmeter, a hose, and a nozzle, a flow rate pulse signal generating means that outputs a number of flow rate pulse signals corresponding to the amount of oil measured by the flow meter, and a count value by counting the flow rate pulse signals. a counting means for outputting the counted value as a counted value signal, a means for displaying the counted value, a reservation signal generating means for outputting a refueling stop reservation signal by performing a reservation operation,
After the reservation signal is input, a determining means for outputting a refueling stop signal when the counted value reaches a value without fractions or a value equal to the refueling inertia value before reaching the value without fractions; In a device equipped with a just-stop lubrication function, which includes additional lubrication command means that cancels the lubrication stop state and enables additional lubrication, a constant multiple of the count value at the time of lubrication stop due to the lubrication stop signal is calculated and held. and comparing means for comparing the counted value and the constant multiplication value after resuming additional refueling, and outputting a refueling stop signal when the two match or the difference between the two matches the refueling inertia value at that time. A refueling device featuring: