JPH0444992A - Oil type discriminator for oil supplier - Google Patents

Abstract

PURPOSE:To discriminate correctly and quickly types of oil in an oil supply tank by sucking gas which is pushed out of the oil supply tank by exhaustion of air through an exhaust port and detecting the gas thus pushed out of the oil supply tank by means of a gas sensor. CONSTITUTION:When a discharge tube of a nozzle member is inserted into an oil supply port 14 of an oil supply tube 13, a cover member 25 contracts and retires in the axial direction so that the other end part 40 which is in contact with a flange 26 displaces on one end part 39 side, whereby a valve bar 41 is pushed through a spring 42 and a valve body 33 is displaced against a spring force of a compression coil spring 43. As a result, a tube passage 29 comes to communicate with a valve room 34 so that pressed air through a tube passage 31 is supplied through the tube passage 29 from an exhaust port 28 into a storing space 36 of a fuel tank 9. In this way, when air is supplied from the exhaust port 28, gas, passing through the oil supply tube 13 within the storing space 36, flows into a tube passage 22 from a flow-in port 21. Diluted on the way by air from a tube passage 35, the gas is led to a gas sensor 46 to undergo oil type inversion.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an oil type discrimination device for a refueling system for supplying fuel oil such as gasoline or diesel oil into a refueling tank of an automobile, for example.

Conventional technology When supplying fuel oil such as gasoline or diesel oil to a fuel tank installed in a vehicle, the oil is pumped out from a storage tank buried underground using a pump, and then pumped through a flow meter. Fuel oil is supplied from the nozzle member to the fuel tank. Multiple such refueling devices are installed depending on the type of oil, and because they have similar appearances, they are used to prevent the supply of diesel oil to gasoline-powered vehicles or gasoline oil to diesel-powered vehicles. It is desirable to determine the type of oil stored in the fuel tank before refueling.
The applicant has filed Japanese Patent Application No. 62-221661 (Japanese Unexamined Patent Publication No. 64-70400) for a device capable of determining oil type using a gas sensor.

Problems to be Solved by the Invention In such prior art, the gas in the fuel tank of an automobile is sucked and the gas concentration is detected by a gas sensor. Even if it is inserted into the fuel filler port, the gas will be diluted by outside air, especially wind, near the fuel filler port, so if you leave the fuel filler open for a long time, the gas concentration will become low and cause false detection. becomes. Therefore, there is a problem in that it takes a relatively long time to guide the dense gas in the fuel tank to the gas sensor and accurately determine the type of oil.

Therefore, an object of the present invention is to provide a fuel supply device that can accurately and quickly determine the type of oil in a fuel tank.

Means for Solving the Problems The present invention is configured to supply oil pumped out by an oil pump by inserting a nozzle portion of a nozzle member into an oil supply port of a fuel tank to which the oil is to be supplied. In the oil type discriminating device for a refueling device, the nozzle member includes a cover body that closes a gap between the outer peripheral surface of the nozzle portion and the refueling port, and a refueling tank with respect to the cover body when the nozzle portion is inserted into the refueling port. an inflow hole that opens on the side and into which gas in the fuel tank flows; and an inflow hole that opens on the fuel tank side with respect to the cover body and discharges air into the fuel tank when the nozzle part is inserted into the fuel tank. A refueling device characterized in that the refueling device is provided with a discharge hole, and further includes: a gas sensor that detects the concentration of gas flowing in from the inflow hole of the nozzle member; and an air pressure source that pumps air to the discharge hole of the nozzle member. This is an oil type discrimination device.

Further, the present invention provides that the nozzle member guides air from the air pressure source to the discharge hole when the nozzle portion is inserted into the fuel filler port of the fuel tank, and when the nozzle portion is separated from the fuel filler port, the air pressure source The gas sensor is characterized in that a switching means is provided for guiding air from the gas sensor to the gas sensor.

According to the present invention, when the nozzle portion of the nozzle member is inserted into the fuel filler port of the fuel tank, the space between the outer peripheral surface of the nozzle portion and the fuel filler port is closed by the cover body, and the space is cut off from the outside.
The inflow hole and the discharge hole open within the fuel filler port. Air forced from the air pressure source is supplied into the fuel tank through the discharge hole of the nozzle member. As a result, gas in which oil such as gasoline or light oil in the fuel tank is vaporized is pushed out toward the fuel filler port and guided to the gas sensor via the inflow hole of the nozzle member. The gas sensor detects the concentration of gas, derives a detection output according to the detected gas concentration, and can determine the type of oil based on this output. With this configuration, there is no risk of the oil stored in the oil tank being sucked directly from the inlet hole.
Therefore, the gas sensor is prevented from being contaminated or damaged by oil. Further, since the fuel filler port is closed by the cover body, the gas is not diluted by wind or the like, and the gas concentration can be detected accurately. Furthermore, when air is discharged into the fuel tank from the discharge hole in this state, the gas in the fuel tank flows into the inflow hole almost simultaneously, so the detection speed is fast and the time required to determine the oil type can be shortened. can.

Further, according to the present invention, when the nozzle part is inserted into the fuel filler port, the air from the air pressure source is guided to the discharge hole by the switching means, and when the nozzle part is separated from the fuel filler port, the air from the pneumatic source is guided to the gas sensor. guided by. Therefore, when the nozzle part is not inserted into the fuel filler port of the fuel tank, cleaning is performed by supplying air to the gas sensor.As a result, when the nozzle part is inserted into the fuel filler port of the fuel tank, the gas sensor is always It can be kept in a cleaned state, and the oil type can be determined accurately and reliably.

Embodiment FIG. 1 is an enlarged cross-sectional view showing a main part of an embodiment of the present invention, and FIG. 2 is a system diagram of the entire embodiment. Either gasoline or diesel oil, which is oil, is stored in a storage tank 1 buried underground, and is pumped up from a pipe 2 through a check valve 3 by a pump 4 such as a gear pump. The vaporized gas of gasoline or light oil is led to the liquid separator 5 and released into the atmosphere, and the liquid is passed from the pipe 6 to the flow meter 7.
The flow rate is measured, and the fluid passes from the flexible pipe line 8 to the discharge pipe 11a, which is the nozzle part of the nozzle member 10.
Either gasoline or diesel oil is supplied from the nozzle hole 12 to the fuel filler port 14 of the fuel filler pipe 13 of the automobile.

A valve 80 is built into the main body 11b of the nozzle member 10. This valve 80 can be opened by operating the manual operation lever 14, and oil can be supplied as described above. Such a valve 80 closes the main body 11 when the fuel tank 9, which is the refueling tank of the automobile, is full.
The valve is configured so that a diaphragm (not shown) built in b is displaced to close the valve.

The pump 4 is rotationally driven by a motor 15.

The amount of oil to be supplied, which is measured by the flow meter 7, is detected by a flow rate pulse generator 16, and the amount of oil to be supplied is digitally displayed on a display 18 by the operation of a control circuit 17.

The nozzle member 10 can be provided with a nozzle hook removably hung on a member 19, as shown by reference numeral 10a in FIG. The state in which the nozzle member 10 is hung on the nozzle hook member 19 is detected by the nozzle detection switch 20.

In order to determine the type of oil stored in the fuel tank 9, that is, whether the oil is gasoline or light oil, a gas inflow hole 21 is provided in the discharge pipe 11a of the nozzle member 10. .

This inflow hole 21 communicates with oil type determination means 23 via an inflow pipe line 22. The inflow conduit 22 is inserted into the nozzle member 10 .

The nozzle member 10 is fitted with a rubber cover body 25, which is called a so-called bellows or the like, in order to close the space between the outer circumferential surface of the discharge pipe 11a and the fuel filler port 14 of the fuel tank 9. The distal end of the discharge pipe 11a protrudes from the cover body 25. This cover body 25 has a generally cylindrical shape, and when the discharge pipe 11a is inserted into the fuel supply port 14, it tightly contacts the flange 26 of the fuel supply pipe 13, and the outer peripheral surface of the discharge pipe 11a and the fuel supply port 14 are brought into close contact with each other. The gap between them is blocked. Internal space 2 of the cover body 25 thus formed
7, the inflow hole 21 is open.

Further, the discharge pipe 11a is provided with a discharge hole 28 that opens near the nozzle hole 12. It is guided through a conduit 31 to an air pressure source 32 such as a compressor.

Air pumped from the air pressure source 32 is supplied to the switching valve 30 via the pipe line 31. At this time, nozzle member 1
When the No. 0 discharge pipe 11a is inserted into the fuel filler port 14, the valve body 33 is in a position that blocks the bypass pipe 35 communicating with the valve chamber 34, and therefore the air from the pipe 31 is
The fuel is supplied from the discharge hole 28 through the pipe line 29 into the storage space 36 in the fuel tank 9 .

The fuel tank 9 is provided with an air venting pipe 37 that communicates the upper part of the storage space 36 with the space near the fuel filler port 14.
When oil is supplied into the storage space 36 and the oil level 38 rises, air in the space above the wave surface 38 can be discharged to the oil filler port 14 side via the pipe 37.

As the oil level 38 rises, the storage space 3
There is no possibility that a closed space will occur in the tank 6, and the tank can be reliably filled. Therefore, the discharge hole 28
When the air is discharged, a part of the gas in the storage space = 6 is guided to the vicinity of the fuel filler port 14 via the pipe 37, and also rises inside the fuel filler pipe 13 and is guided to the vicinity of the fuel filler port 14. The inflow hole 21 flows into the six inflow conduit 22 through the space 27 closed by the cover body 25. Three ends of the cover body 25 in the wire direction may be fixed to the outer circumferential surface of the discharge pipe 11a of the nozzle member 10, and one end may be attached in a detachable manner. The other end 4o of the cover body 25 in the axial direction is spaced apart radially outward from the outer circumferential surface of the discharge pipe 11a.
When inserted into the oil filler port 14, it completely contacts the flange 26 over the entire circumferential direction. Therefore, the internal space 27 surrounded by the cover body 25 is sealed, and the gas in the storage space 36 that has been pushed out as air is supplied from the exhaust hole 28 as described above is released to the outside by wind or the like. It becomes possible to reliably flow into the inflow hole 21 without dissipating.

The valve body 33 of the switching valve 30 has a valve stem 41 in the form of a longitudinal rod.
One axial end of the valve rod 41 is connected to the other end of the valve rod 41 in the axial direction, and a compression spring 42 is provided at the other end of the valve rod 41 in the axial direction.

The valve stem 41 passes through the cover body 25 and opens into the internal space 27.
A compression coil spring 43 is attached to a portion protruding into the internal space 27 . One end of the compression coil spring 43 abuts on the cover body 25 and is locked, and the other end of the spring receiver fixed to the valve rod 41 abuts on the piece 44 and is locked. The spring force of the compression coil spring 43 is selected to be larger than the spring force of the compression spring 42, so that the valve body 33 is placed in the position where the opening facing the valve chamber 34 of the pipe line 29 is closed, that is, the imaginary line in FIG. It is seated at a position indicated by 33a. Therefore, the air from the pipe line 31 is guided to the oil type determination means 23 side via the pipe line 35 and the pipe line 22, and is discharged from the inlet hole 21 to the outside. As a result, between the inflow hole 21 and the pipe line 35, and the pipe line 3
5 to the oil type determination means 23 can be cleaned. Therefore, the discharge pipe 1 of the nozzle member 10
1a from the oil filler port 14, the pipe line 3522 and the oil type determination means 23 are cleaned, which may cause erroneous detection of gas remaining in the pipe lines 35, 22. There isn't. Moreover, even when the valve body 33 closes the opening of the conduit 35 facing the valve chamber 34 (as shown by the solid line in FIG. 1), air is not supplied to the conduit 35 via the bypass conduit 45. Therefore, even if gas flows into the inflow hole 21 due to the supply of air from the exhaust hole 28,
The gas is appropriately diluted by the air passing through the bypass pipe line 45 and the pipe line 35, and there is no fear that the oil type determining means 23 will be supplied with a gas with an unnecessarily high concentration.

The oil type determining means 23 is provided with a gas sensor 46 for detecting the oil type, and this gas sensor 46 has a configuration such as a semiconductor type, a catalytic combustion type, or an infrared type, and detects the gas concentration of the oil. Derive an electrical signal having a level corresponding to .

As mentioned above, the reason for diluting the gas supplied to the oil type determining means 23 and, therefore, the gas sensor 46 is to prevent oil from adhering to the gas sensor 46 and to dilute the gas to a level suitable for the detection level of the highly sensitive gas sensor 46. This is to supply a concentrated gas.

FIG. 3 is a block diagram showing the electrical configuration of the embodiment shown in FIGS. 1 and 2. FIG. Pressurized air of, for example, about 2 kg/cm 2 supplied from the air pressure source 32 is guided to the pipe 31 through the pipe 48 and the on-off valve 49 . This on-off valve 49 is opened and closed by a drive signal from an on-off valve drive circuit 50. A detection signal from the nozzle detection switch 20 is given to this on-off valve drive circuit 50, and this detection signal is output when the nozzle member 10 is removed from the nozzle hook member 19. The output from the nozzle detection switch 20 is also given to a counting circuit 51, as well as to a motor control port 15'2 for controlling the motor 15 and an oil type determination circuit 53. The control circuit 1 includes the on-off valve drive circuit 5o, the counting circuit 51, the motor control circuit 52, and the oil type determination diagram B5B.
7 is composed.

The oil type determination circuit 53 provided in this control port I@17
is realized, for example, by a microcomputer.

Figure 4 shows the gas concentration discrimination level LDI, LG1:
LD2. It is a graph for explaining the operation of setting LG2 and determining the oil type. In the fuel supply pipe 13 of the automobile, the fuel oil in the fuel tank 9 that stores the fuel oil of the automobile,
In the case of light oil, when the concentration of light oil gas is relatively low, it has a gas concentration indicated by reference numeral D1, and when it is relatively high, it has a high gas concentration indicated by reference numeral D2. For example, when the oil stored in the fuel tank 9 is gasoline, when the temperature of the gasoline gas is relatively low, the gas concentration is indicated by the reference mark G1, and when it is relatively high, the gas concentration is indicated by the reference mark G2. High gas concentration results. Therefore, the oil type determination circuit 53 provided in the control circuit 17
When determining the oil type by
Two discrimination levels LDI and LGI are set. In the case of this low temperature, when the gas concentration D1 detected by the gas sensor 46 is less than the discrimination level LD1, it is determined that the vehicle uses light oil as fuel, and at this time, light oil is stored in the storage tank l. Refueling is possible when the light oil refueling device is in use. Furthermore, at low temperatures, when the gas concentration detected by the gas sensor 46 is a value G1 exceeding the discrimination level LGI, it is determined that the vehicle uses gasoline as fuel oil, and gasoline is stored in the storage tank 1. When the refueling device is
Refueling becomes possible.

At high temperature, the discrimination level is LD2. When LG2 is set and a gas concentration D2 lower than the discrimination level LD2 is detected, it is determined that diesel oil is to be used as fuel, and when a gas concentration G2 exceeding the discrimination level LG2 is detected, gasoline is determined to be the fuel oil. judge it as something. In this way, the discrimination levels LDI, LGI; LD2. By setting LG2, it is possible to accurately determine the type of oil, whether it is light oil or gasoline. In other embodiments, there are three discrimination levels (LGI, LG2.LG3; LD
I, LD2. By setting LD3) or higher, the oil type may be determined with even higher accuracy.

FIG. 5 is a flowchart for explaining the operation of the embodiment shown in FIGS. 1-4. The following explanation assumes that a gasoline nozzle was used in the previous refueling operation. First, the refueling operation is started in step a1,
In step a2, the nozzle member 10 is removed from the nozzle hook member 19, and when this is detected by the nozzle detection switch 20, in step a3, the counting circuit 51 is reset and the on-off valve 49 is opened. For example, pressurized air of about 2 kg/cm'' is fed through the pipe 31. At this time, the imaginary line 33a in FIG.
As shown, the valve body 33 closes the pipe line 29,
Therefore, pressurized air from line 31 is transferred to bypass line 45.
It flows into the pipe line 35 through the valve chamber 34 and into the pipe line 35 through the valve chamber 34.

The pressurized air supplied to the pipe line 35 is supplied to the inflow pipe line 22 and discharged to the outside from the inflow hole 21, and is also supplied to the gas sensor 46 of the oil type determination means 23 to perform cleaning.

In this state, when the discharge pipe 11a of the nozzle member 10 is inserted into the oil supply port 14 of the oil supply pipe 13, the cover body 25 retracts in its axial direction, and the other end 40 that abuts the flange 26 has one end. 39111, thereby spring 4
2, the valve rod 41 is pressed, and the valve body 33 is displaced against the spring force of the compression coil spring 43. Thereby, the pipe line 29 communicates with the valve chamber 34, and the pressurized air passing through the pipe 131 is supplied from the discharge hole 28 through the pipe line 29 into the storage space 36 of the fuel tank 9. In this way, when air is supplied through the discharge hole 28, the gas in the storage space 36 passes through the oil supply pipe 13, flows into the pipe line 22 from the inflow hole 21, and is filled with air from the pipe line 35 along the way. It is diluted and guided to the gas sensor 46.

In step a4, the gas sensor 46:
As described in connection with FIG. 4 above, oil type determination is performed. In step a5, if the gas guided to the gas sensor 46 is gasoline gas, the process moves to step a6;
The oil type determination circuit 53 derives a refueling permission signal to the on-off valve drive circuit 50 and the motor control circuit 52. by this,
In step a7, the motor 15 is driven, and the gasoline pumped up from the storage tank 1 by the pump 4 is supplied into the fuel tank 9 through the pipe 6, the flow meter 7, the pipe 8, and the nozzle hole 12 of the nozzle member 10. At this time, the flowmeter 7
measures the flow rate of the passing gasoline, and the flow rate is digitally displayed on the display 18 based on the output from the flow rate pulse transmitter corresponding to the flow rate. Note that the on-off valve drive circuit 50 closes the on-off valve 49 upon generation of the refueling permission signal, and stops the supply of air to the pipe line 31. step a
In step 9, when the operation lever 14 is operated to stop the oil supply, the process moves to step alo, and when the nozzle member 10 is returned to the nozzle hook member 19, the process moves to step all, where the motor 15 is stopped and the predetermined time, for example 2
The on-off valve 49 is opened for 0 seconds to send air and perform cleaning, and the refueling operation ends in step a12.

In step a5, if it is not gasoline, the process moves to step a13, and the notification means 56 notifies that the type of oil is different by, for example, flashing a lamp or making a buzzer sound intermittently. Then step a14
Next, it is determined whether or not the nozzle member 10 has been returned to the nozzle hook member 19, and if it has been returned, the on-off valve 49 is opened for, for example, 20 seconds in step a15 to perform cleaning; The refueling operation ends in step a12.

FIG. 6 is a diagram for explaining the performance determination operation of the gas sensor 46 of the oil type determination circuit 53. In step a4 of FIG. 5 described above, in the case of gasoline gas, the detection output is inputted to the oil type determination circuit 53 from the gas sensor 46 as indicated by reference numeral 11, and at time t1 the detection output reaches a low reference level ( =V2), the output of the gas sensor 46 increases. In this way, when the output of the gas sensor 46 increases, as described in FIG. 4, for example, if it increases beyond the gasoline discrimination level LGI, it can be determined that it is gasoline, but in the event of an abnormality, There are cases where the level (3), which is higher than the standard level (V2) when air is supplied to the normal gas sensor 46, is maintained, and the gas sensor 46 does not return to the standard level (2).

Such an abnormality is caused, for example, by a decrease in the sensing performance of the gas sensor 46 due to long-term use, or by the adhesion of an oil film or airborne objects to the gas sensor 46. Due to its nature, the output of the gas sensor 46 changes only up to the level V1, and on the other hand, since the level LGI is determined by the Kl value based on the level V2 at time t1, the output at time t2
When level ■3 is the standard, level LGIO is set, so at this time it exceeds level ■1,
Even if the detection operation is started at time t2, gasoline detection becomes impossible.

Therefore, if the level vO is set as a fixed value and the output from the gas sensor 48 at the start of detection exceeds the level vO, the notification means 56 notifies that the sensor is defective, and also determines the oil type. It is configured so that the refueling permission signal from the circuit 53 is not output. In this way, safety is improved. In addition, K
The binary value indicates the value that serves as the criterion for light oil.

FIG. 7 is an enlarged sectional view of the vicinity of the nozzle hole 12 of the nozzle member 10 according to another embodiment of the present invention. In this embodiment, the discharge pipe 11a of the nozzle member 10 is provided with a right cylindrical cylindrical portion 60 and an expanded portion 61 that is connected to the cylindrical portion 60 and expands radially outward as it approaches the end in the axial direction. cover body 62 having
is installed.

The inner diameter of the cylindrical portion 60 is larger than the outer diameter of the discharge pipe 11a, and they are spaced apart from each other at a distance 63 in the radial direction (upper part in FIG. 7). A gas sensor 46 fixed to the discharge pipe 11a is provided within this gap 63, and has a small gap 64 from the inner peripheral surface of the cylindrical portion 6° of the gas sensor 46. Such a cover body 62 is made of a flexible and elastic material such as rubber, and is advantageous for a fuel tank in which the fuel filler port 14 is provided on the inner side of the vehicle body 65, such as a passenger car. In other words, the fuel filler port 1 is brought into close contact with the vicinity of the outer periphery of the flange 26 which is disposed inwardly from the vehicle body 65.
Therefore, the influence of wind etc. can be reduced, and the gas pushed out from inside the fuel tank 9 due to the operation of discharging air from the exhaust hole 28 will not leak outside, and the gas sensor 46 can be reliably closed. can be detected quickly. Moreover, since the small interval 64 is provided, the gas pushed out from the fuel filler port 14 passes through the gas sensor 46 without being sealed in the space 70 blocked by the cover body 62. and dissipate into the atmosphere.

Thereby, gas having a gas concentration suitable for the detection level of the gas sensor 46 can be supplied to the gas sensor 46.

FIG. 8 is an enlarged sectional view of the vicinity of the nozzle hole 12 of the nozzle member 10 according to still another embodiment of the present invention, and FIG. 9 is a block diagram showing the electrical configuration of the embodiment shown in FIG. 8. 6 In this embodiment, the switching valve 3 shown in FIGS.
0, a switching element 68 as a switching means
is provided.

When the discharge pipe 11a of the nozzle member 10 is inserted into the oil supply port 14, the actuator 69 of the switching element 68
is pressed, and the switching element 68 switches!
lI! The mode can be changed. Based on such a signal from the switching element 68, the type of oil in the fuel tank 9 can be determined by performing the same operation as shown in FIG.

FIG. 10 is a flowchart for explaining the oil type determination operation of the embodiment shown in FIGS. 8 and 9. FIG. Incidentally, the steps corresponding to FIG. 5 are given a subscript. In particular, in this embodiment, it is detected in step b2 that the nozzle member 10 has separated from the nozzle hook member 19, and in step b3, the number of times 151 is counted. After being reset and opening the on-off valve 49, the discharge pipe 1 of the nozzle member 1o is opened by the stellar 7b14.
1a is attached to the fuel filler port 14, and the switching element 6
Based on the output signal from 8, the operations from step b4 to step b13 are performed. By providing such a switching element 68, the time required to detect the insertion of the nozzle member 10 can be shortened, and the detection operation can be performed quickly.

Effects of the Invention According to the present invention, air is supplied into the fuel tank and the gas pushed out from the fuel tank is detected by the gas sensor.For example, the gas in the fuel tank is sucked and guided to the gas sensor. Compared to the configuration of the prior art, even if the gas concentration near the fuel filler port becomes low, the gas detection speed is faster, so the type of oil can be quickly determined and the fueling operation can be performed. In addition, since the air is discharged through the exhaust hole and the gas pushed out from inside the fuel tank is sucked in, there is no risk of directly sucking the liquid oil in the fuel tank, and therefore the nozzle can be There is no risk of contamination. Moreover, since the nozzle member is provided with a cover body, it is less susceptible to the influence of wind during refueling.
It is possible to reliably guide gas to the inflow hole and determine the oil type.

[Brief explanation of the drawing]

FIG. 1 is an enlarged sectional view of the vicinity of the nozzle hole 12 of a nozzle member 1o according to an embodiment of the present invention, FIG. 2 is a system diagram showing the overall configuration of the present invention, and FIG. 3 is an electrical configuration of the present invention. FIG. 4 is a graph for explaining the operation of determining the oil type according to the gas concentration detected by the gas sensor 46, and FIG. 5 is a block diagram of the embodiment shown in FIGS. 1 to 4. 6 is a flowchart for explaining the operation, FIG. 6 is a diagram for explaining a defective state of the gas sensor 46, FIG. 7 is an enlarged sectional view of the vicinity of the nozzle hole 12 of the nozzle member 1o of another embodiment of the present invention, FIG. 8 is an enlarged sectional view of the nozzle hole 12 and its vicinity of a nozzle member 1o according to still another embodiment of the present invention, and FIG.
A block diagram showing the electrical configuration of the embodiment shown in the figure, and FIG. 10 is a flowchart thereof. 9... Fuel tank, 10... Nozzle member, lla.
Discharge pipe, llb...Main body, 12...Nozzle hole, 14...
- Oil supply port, 19... Nozzle hook is a member, 2o... Nozzle detection switch, 21... Inflow hole, 23... Oil type determination means, 25.62... Cover body, 28... Discharge hole, 3o...Switching valve, 6...Gas sensor, 8...Switching element

Claims (2)

[Claims] (1) Oil type discrimination device for an oil supply device configured to supply oil pumped out by an oil pump by inserting the nozzle part of a nozzle member into the oil supply port of the oil supply tank to which the oil is to be supplied. (a) The nozzle member includes: (a1) a cover body that closes the space between the outer circumferential surface of the nozzle portion and the oil filler port; and (a2) oil supply with respect to the cover body when the nozzle portion is inserted into the oil filler port; (a3) an inflow hole that opens on the tank side and into which the gas in the fuel tank flows; and (a3) an inflow hole that opens on the fuel tank side with respect to the cover body and directs into the fuel tank when the nozzle part is inserted into the fuel fill port; and (b) a gas sensor that detects the concentration of gas flowing in from the inflow hole of the nozzle member; and (c) an air pressure source that pumps air to the discharge hole of the nozzle member. An oil type discriminating device for an oil supply device, comprising: (2) The nozzle member is configured such that when the nozzle portion is inserted into the fuel filler port of the fuel tank, air from the air pressure source is guided to the exhaust hole, and when the nozzle portion is separated from the fuel filler port, air is guided from the air pressure source to the exhaust hole. Claim 1, characterized in that switching means for guiding air to the gas sensor is provided.
Oil type discrimination device for the oil supply device described in Section 1.