WO1999048718A1 - Reservoir a carburant - Google Patents

Reservoir a carburant Download PDF

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Publication number
WO1999048718A1
WO1999048718A1 PCT/JP1998/003885 JP9803885W WO9948718A1 WO 1999048718 A1 WO1999048718 A1 WO 1999048718A1 JP 9803885 W JP9803885 W JP 9803885W WO 9948718 A1 WO9948718 A1 WO 9948718A1
Authority
WO
WIPO (PCT)
Prior art keywords
fuel
chamber
level
pressure
storage device
Prior art date
Application number
PCT/JP1998/003885
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
Yoshihiko Hyodo
Takaaki Itoh
Tooru Kidokoro
Takashi Ishikawa
Masahide Kobayashi
Original Assignee
Toyota Jidosha Kabushiki Kaisha
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP07955498A external-priority patent/JP3438575B2/ja
Application filed by Toyota Jidosha Kabushiki Kaisha filed Critical Toyota Jidosha Kabushiki Kaisha
Priority to AU88882/98A priority Critical patent/AU737184B2/en
Priority to BR9811369-0A priority patent/BR9811369A/pt
Priority to CA002301030A priority patent/CA2301030C/en
Publication of WO1999048718A1 publication Critical patent/WO1999048718A1/ja

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K15/035—Fuel tanks characterised by venting means
    • B60K15/03519—Valve arrangements in the vent line
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K15/077—Fuel tanks with means modifying or controlling distribution or motion of fuel, e.g. to prevent noise, surge, splash or fuel starvation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K2015/03236—Fuel tanks characterised by special filters, the mounting thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K2015/03328—Arrangements or special measures related to fuel tanks or fuel handling
    • B60K2015/03453—Arrangements or special measures related to fuel tanks or fuel handling for fixing or mounting parts of the fuel tank together
    • B60K2015/03467—Arrangements or special measures related to fuel tanks or fuel handling for fixing or mounting parts of the fuel tank together by clip or snap fit fittings

Definitions

  • the present invention relates to a fuel storage device, and more particularly to a fuel tank connected to an internal combustion engine.
  • the fuel reservoir or fuel tank should communicate with the outside air so that the fuel level can move up and down within the fuel tank.
  • evaporated fuel is generated in the space formed above the fuel level. For this reason, there is a problem that fuel vapor is released from the fuel tank to the outside air.
  • the fuel tank communicates with the outside air through a charcoal canister for temporarily absorbing the evaporated fuel. If the amount of fuel vapor generated in the fuel tank is large, the charcoal canister must also be large.
  • Japanese Patent Laid-Open Publication No. Sho 64-1646 / 26 has an inflatable airbag, which expands or contracts in accordance with a change in the fuel level. Also disclosed is a fuel tank in which a space is not formed above the fuel level in the fuel tank.
  • the inside of the fuel tank does not communicate with the outside air. For this reason, if a space has already been formed above the fuel level, that space will not be excluded when the airbag expands. For this reason, the evaporated fuel may be generated in the space above the fuel level.
  • a fuel storage device for storing fuel, comprising: a wall for dividing an internal space of the fuel storage device into a fuel chamber and an air chamber; A discharge passage that opens into a space formed above the fuel level in the fuel chamber, a shutoff valve that normally shuts off the discharge passage, and the shutoff valve is open.
  • Gas discharge means for discharging gas from the space through the discharge passage, and the shutoff so as to discharge the gas from the space when the amount of the gas is larger than a predetermined amount.
  • Control means for controlling the gas release means and the shut-off valve so as to open the valve and operate the gas release means, wherein the control means makes the amount of the gas smaller than the predetermined amount. Stop the release of the gas when low Fuel accumulating device to stop the operation of the closing and and the gas discharge means is provided his urchin the shut-off valve.
  • a fuel liquid level detecting means for detecting the height of the fuel liquid level in the fuel chamber, and the control means is provided with the fuel detected by the fuel liquid level detecting means.
  • the control means is provided with the fuel detected by the fuel liquid level detecting means.
  • a fuel liquid level height increasing means for increasing the height of the fuel liquid level, and the gas discharging means is provided when the amount of the gas is larger than the predetermined amount.
  • the fuel level raising means is controlled to raise the level of the fuel level so as to release the gas from the space.
  • the fuel level raising means supplies the fuel to the fuel chamber in order to raise the level of the fuel level.
  • the means for increasing the fuel level increases the height of the fuel level. Deform the wall to raise its height.
  • the fuel level raising means increases the pressure in the air chamber to deform the wall.
  • the fuel level raising means increases the pressure in the air chamber to a pressure lower than the pressure of the fuel supplied to the fuel chamber.
  • the fuel level raising means reduces the pressure in the air chamber when the supply of fuel to the fuel chamber is stopped.
  • the fuel level raising means introduces a negative pressure into the space to deform the wall.
  • the fuel liquid level raising means includes a fuel pump for discharging fuel and generating a negative pressure by the discharged fuel, and the fuel pump is provided in the space through the discharge passage. , The negative pressure is introduced.
  • the fuel level raising means returns a part of the fuel discharged by the fuel pump into the fuel chamber to generate a negative pressure.
  • the fuel pump is housed in a pump chamber connected to the fuel chamber, and the fuel level raising means is configured to generate a negative pressure of the fuel discharged by the fuel pump to generate a negative pressure.
  • a part is returned to the pump chamber, and a negative pressure is introduced into a space formed above the fuel level in the pump chamber.
  • the discharge passage is connected to an intake system of an internal combustion engine, and the fuel level raising means reduces the negative pressure in the intake system to the fuel liquid through the discharge passage. It is introduced into the space formed above the surface.
  • the discharge passage is connected to the intake system via a canister for adsorbing the evaporated fuel, and the canister has a predetermined negative pressure inside the canister. Open to atmosphere when A valve is provided to open the canister and communicate with the atmosphere.
  • the fuel level raising means increases the level of the fuel level when the state of the internal combustion engine is a state capable of receiving the evaporated fuel.
  • FIG. 1 is a sectional view of a fuel storage device according to a first embodiment of the present invention.
  • FIG. 2 is a cross-sectional view of the fuel storage device along the line II-II of FIG. 1.
  • FIG. 3 is a cross-sectional view of the fuel storage device immediately after the supply of fuel to the fuel chamber is stopped.
  • Fig. 4 is a sectional view of the fuel storage device when the fuel in the fuel chamber is reduced.
  • FIG. 5 is a sectional view of a fuel storage device according to a second embodiment of the present invention.
  • FIG. 6 is a flowchart of the evaporative fuel removal processing according to the second embodiment of the present invention.
  • FIG. 7 is a sectional view of a fuel storage device according to a third embodiment of the present invention.
  • FIG. 8 is a flowchart of the evaporative fuel removal processing according to the third embodiment of the present invention.
  • FIG. 9 is a sectional view of a fuel storage device according to a fourth embodiment of the present invention.
  • FIG. 10 is a flow chart of the evaporative fuel removal processing according to the fourth embodiment of the present invention.
  • FIG. 11 is a sectional view of a fuel storage device according to a fifth embodiment of the present invention.
  • FIG. 12 is a flowchart of the evaporative fuel removal processing according to the fifth embodiment of the present invention.
  • FIG. 13 is a sectional view of a fuel storage device according to a sixth embodiment of the present invention.
  • FIG. 14 is a sectional view of a fuel storage device according to a seventh embodiment of the present invention.
  • FIG. 15 is a flowchart of the evaporative fuel removal processing according to the seventh embodiment of the present invention.
  • FIG. 16 is a sectional view of a fuel storage device according to an eighth embodiment of the present invention.
  • FIG. 17 is a flowchart of the evaporative fuel removal processing according to the eighth embodiment of the present invention.
  • FIG. 18 is a sectional view of a fuel storage device according to a ninth embodiment of the present invention.
  • FIG. 19 is a flowchart of the evaporative fuel removal processing according to the ninth embodiment of the present invention.
  • FIG. 20 is a sectional view of a fuel storage device according to a tenth embodiment of the present invention.
  • FIG. 21 is a flowchart of the evaporative fuel removal processing according to the tenth embodiment of the present invention.
  • FIG. 22 is a flowchart of the evaporative fuel removal processing according to the tenth embodiment of the present invention.
  • FIG. 23 is a cross-sectional view of the fuel storage device of the eleventh embodiment of the present invention.
  • FIG. 24 is a cross-sectional view of the fuel storage device of the twelfth embodiment of the present invention.
  • FIG. 26 is a cross-sectional view of the fuel storage device of the thirteenth embodiment.
  • FIG. 26 is a part of a flowchart of the evaporative fuel removal processing of the thirteenth embodiment of the present invention.
  • FIG. 27 is a part of a flowchart of the evaporative fuel removal processing according to the thirteenth embodiment of the present invention.
  • FIG. 28 is a partial sectional view of a fuel storage device according to a fourteenth embodiment of the present invention.
  • FIG. 29 is a perspective view of a fuel storage device according to a fourteenth embodiment of the present invention.
  • FIG. 30 is a perspective view of a fuel container in a state of being enlarged.
  • FIG. 31 is a perspective view of the fuel container in a smaller state.
  • FIG. 32 is a partial sectional view of a fuel pump device according to a fourteenth embodiment of the present invention.
  • FIG. 33 is a partial cross-sectional view of the fuel pump device taken along the line XXXIII-XXXIII of FIG.
  • FIG. 34 is a partial sectional view of another fuel pump device different from the fourteenth embodiment of the present invention.
  • FIG. 35 is a partial sectional view of the fuel pump device according to the fifteenth embodiment of the present invention.
  • FIG. 36 is a partial cross-sectional view of the fuel pump device taken along the line XXVI-XXVI in FIG. BEST MODE FOR CARRYING OUT THE INVENTION
  • the fuel storage device is mounted on a vehicle, for example, for storing fuel to be supplied to an internal combustion engine.
  • a fuel storage device can also be used simply to store fuel over a period of time.
  • the fuel tank 1 of the fuel storage device has an upper part 2 and a lower part 3 made of a material such as metal or synthetic resin.
  • the upper part 2 and the lower part 3 are hermetically connected to each other at their peripheral flange parts 2a and 3a.
  • a separating wall or separation membrane 5 is arranged in the interior space 4 defined by the upper part 2 and the lower part 3.
  • the separating wall 5 divides the internal space 4 into an air chamber 6 above the separating wall 5 and a fuel chamber 7 below the separating wall 5.
  • Separation wall 5 is made of a flexible and vapor-impermeable material such as polyethylene or nylon.
  • the separating wall 5 is attached to the fixed part 8 at its peripheral part 5a. That is, the separation wall 5 is airtightly attached to the inner wall surface of the fuel tank 1.
  • the peripheral part 5 a of the separating wall 5 is sandwiched between the peripheral flanges 2 a and 3 a of the upper part 2 and the lower part 3.
  • the separating wall 5 is provided with an annular fold portion 5b which is arranged substantially concentrically and is equally spaced from each other. Therefore, the separation wall 5 has a corrugated portion defined by the annular fold portion 5b.
  • the separation wall 5 can be bent at the fold 5b. Therefore, the central portion 5 c of the separation wall 5 can move up and down in the fuel tank 1. That is, the separation wall 5 is deformed at the fold 5b so that the center 5c can move up and down.
  • An oil supply pipe 13 is connected to the lower part 3 in an airtight manner, and the oil supply pipe 13 opens to the internal space of the fuel chamber 7.
  • a lid 14 for closing the oil supply pipe 13 is detachably attached to the upper opening 13 a of the oil supply pipe 13.
  • the sealing member 15 that comes into contact with the outer peripheral surface of the lid 14 when the lid 14 is attached to the upper opening 13a, and the fuel chamber 7 A seal member 16 that comes into contact with the outer peripheral surface of the lubricating nozzle when the lubricating nozzle is inserted into the lubricating pipe 13 to fill with oil, and the lubricating pipe 13 is normally shut off by spring bias.
  • Fuel vapor shutoff valve 17 is provided.
  • a check valve 10 is provided in the lower opening 13 b of the oil supply pipe 13.
  • the check valve 10 is opened by the pressure of the fuel supplied from the fuel nozzle and is closed by the pressure of the fuel in the fuel chamber 7.
  • a fuel pump chamber 18 is connected to the fuel chamber 7.
  • the fuel pump chamber 18 is defined by the lower part 3 and projects outwardly from the peripheral flange part 2 a of the upper part 2.
  • a fuel pump 19, a pressure regulator 20, and a fuel filter 21 are arranged in the fuel pump chamber 18.
  • the pressure of the fuel discharged by the fuel pump 19 is adjusted by a pressure regulator 20, and thereafter, the fuel is supplied to a fuel injection valve (not shown) via a fuel supply pipe 22.
  • fuel is supplied from a fuel distribution pipe for distributing fuel from the fuel supply pipe 22 to each fuel injection valve. There is no need to provide a fuel return path back to Tank 1.
  • the fuel that is heated near the cylinder head of the internal combustion engine and contains the evaporated fuel is not returned to the fuel chamber 7. Therefore, the generation of fuel vapor in the fuel chamber 7 is prevented. Further, since the fuel pump 19 is disposed in the fuel tank 1, the noise generated from the fuel pump 19 is prevented from being transmitted from the fuel tank 1 to the outside of the fuel tank 1.
  • the fuel chamber 7 is connected to a fuel supply pipe 13 via a circulation pipe 23.
  • the circulation pipe 23 releases air from the fuel chamber 7 to the fuel pipe 13 when fuel is supplied into the fuel chamber 7 through the fuel pipe 13. Therefore, the supply of fuel into the fuel chamber 7 is facilitated.
  • the first shut-off valve is installed in the opening of the circulation pipe 23 opening into the internal space of the fuel chamber 7.
  • the first shutoff valve 30 is attached.
  • the first shutoff valve 30 is closed by the fuel that has reached the first shutoff valve 30. Therefore, when the first shutoff valve 30 is closed, the pressure in the oil supply pipe 13 adjacent to the opening of the circulation pipe 23 opening into the internal space of the oil supply pipe 13 decreases.
  • the upper space 18a in the fuel pump chamber 18 communicates with the internal space of the fuel supply pipe 13 via the fuel vapor discharge pipe 24.
  • the fuel vapor discharge pipe 24 is connected to an upper wall portion defining a fuel pump chamber 18. Evaporated fuel discharge pipe 24 releases air from the fuel chamber 7 to the lined oil pipe 13 when the fuel is supplied into the fuel chamber 7 through the lined oil pipe 13. Therefore, it becomes easier to supply the fuel to the fuel chamber 7.
  • a second shutoff valve 31 is attached to the opening of the fuel vapor discharge pipe 24 opening into the internal space of the fuel pump chamber 18.
  • the second shut-off valve 31 is closed by the fuel that has reached the second shut-off valve 31. Therefore, when the second shutoff valve 31 is closed, the pressure in the fuel supply pipe 13 adjacent to the opening of the fuel vapor discharge pipe 24 opening into the internal space of the fuel supply pipe 13 decreases.
  • the opening of the evaporative fuel discharge pipe 24 opening to the internal space of the fuel supply pipe 13 is located above the opening of the circulation pipe 23 opening to the internal space of the fuel supply pipe 13.
  • the fuel supply pipe 13 is connected to a charcoal canister 26 via a first evaporated fuel purge pipe 25.
  • the opening of the first vaporized fuel purge pipe 25 opening in the internal space of the fuel supply pipe 13 is located at the same height as the opening of the evaporated fuel discharge pipe 24 opening in the internal space of the fuel supply pipe 13.
  • the charcoal varnish 26 is provided with activated carbon 26a for absorbing evaporated fuel.
  • the charcoal varnish 26 opens to the outside air via an atmosphere release pipe 28.
  • the charcoal canister 26 is connected to an intake passage (not shown) of the internal combustion engine via a second evaporative fuel purge pipe 27.
  • the evaporative fuel generated in the fuel chamber 7, the fuel supply pipe 13 and the fuel pump chamber 18 passes through the circulation pipe 23, the evaporative fuel discharge pipe 24 and the first evaporative fuel purge pipe 25 and the char canister 2 6 and adsorbed on activated carbon 26a. This prevents the fuel vapor from being released to the outside air.
  • the evaporative fuel adsorbed on the activated carbon 26a is purged into the intake passage via the second evaporative fuel purge pipe 27 based on the operating state of the internal combustion engine such as the engine load. For example, when the vehicle with the fuel tank 1 turns, the separating wall 5 is moved by the movement of the fuel in the fuel chamber 7. Therefore, a large load such as stress is generated on the separation wall 5. As shown in FIG.
  • the inner wall surface of the side wall 3b of the lower part 3 is inclined inward from the fixed part 8 to the bottom wall 3c of the lower part 3.
  • the shape of the inner wall surface of the side wall 3b matches the shape of the corrugated portion defined by the fold portion 5b when the central portion 5c is located in the lower region in the fuel chamber 7. Therefore, regardless of the position of the central portion 5c of the separation wall 5 in the fuel chamber 7, the movement of the corrugated portion of the separation wall 5 in the horizontal and vertical directions and the movement of the separation wall 5 itself are prevented.
  • An annular protrusion 29 is formed on the inner wall surface of the side wall 3 b of the lower portion 3.
  • the protrusion 29 protrudes inward from the side wall 3b so that the side wall 3b has a step.
  • the corrugated portion including the fold portion 5b makes smooth contact with the protrusion 29. Therefore, the movement of the corrugated portion of the separation wall 5 in the horizontal and vertical directions and the movement of the separation wall 5 itself are prevented.
  • the protrusion 29 is formed on the side wall 3b from the fixed portion 8 to the bottom wall 3c such that a recess is formed between the adjacent protrusions 29. Since the recess holds the fold portion 5b, the movement of the corrugated portion of the separation wall 5 in the horizontal and vertical directions and the movement of the separation wall 5 itself are further prevented, as described above. The generation of a large stress in the slab prevents the separation wall 5 from being damaged.
  • the protrusion 29 reduces the volume of space formed between the fuel level and the separation wall 5, the amount of fuel vapor generated in the fuel chamber 7 is reduced.
  • the protrusion 29 strengthens the lower part 3 so that it is not necessary to provide a reinforcing member to strengthen the lower part 3.
  • the inner wall of the upper part 2 of the fuel tank 1 is biased or elastic. Then, a spring 32 is attached.
  • the spring 32 extends downward from the inner wall surface of the upper part 2. The spring 32 comes into contact with the central portion 5c of the separating wall 5 when the central portion 5c of the separating wall 5 rises. Therefore, collision with the inner wall surface of the upper part 2 by the separation wall 5 is prevented.
  • the air chamber 6 communicates with the outside air via a pipe 33 opening to the atmosphere.
  • the pipe 33 is connected to the upper part of the fuel tank 1.
  • the pipe 33 releases the air from the air chamber 6 to the outside air when the central part 5 c of the separation wall 5 rises. Therefore, the central portion 5c easily rises when fuel is supplied into the fuel chamber 7.
  • the pipe 33 introduces air from the outside air into the air chamber 6 when the central portion 5c of the separation wall 5 descends. Therefore, when the fuel in the fuel chamber 7 is used during the operation of the internal combustion engine, the central portion 5c is easily lowered.
  • the fuel is supplied into the fuel chamber 7 when there is a space above the fuel level in the fuel chamber 7.
  • the height of the fuel level rises. Therefore, the evaporated fuel in the space above the fuel level is discharged to the fuel supply pipe 13 via the circulation pipe 23 and the evaporated fuel discharge pipe 24.
  • the fuel chamber 7 When the fuel level reaches the first shutoff valve 30 and the second shutoff valve 31, that is, when the fuel vapor in the space above the fuel level is completely removed from the space, the fuel chamber 7 is sealed. . Then, the supply of fuel into the fuel chamber 7 is stopped. Once the fuel chamber 7 is sealed, the sealed state of the fuel chamber 7 is maintained so that no space is formed above the fuel level in the fuel chamber 7. Therefore, the generation of fuel vapor in the fuel chamber 7 is prevented.
  • the supply of fuel into the fuel chamber 7 is It corresponds to a means for discharging gas from the formed space or a means for increasing the height of the fuel liquid level.
  • Figure 1 shows a fuel tank 1 containing evaporated fuel.
  • a lined oil nozzle (not shown) is inserted into the upper opening 13 a of the oil supply pipe 13.
  • the refueling nozzle piles on the spring bias to open the evaporative fuel shutoff valve 17, and then the outer peripheral surface of the lined oil nozzle comes into contact with the seal member 16. Therefore, when the refueling nozzle is inserted into the refueling pipe 13, the fuel vapor is prevented from flowing out of the upper opening 13 a to the outside air.
  • the first shut-off valve 30 is closed by the fuel in the fuel chamber 7 to shut off the circulation pipe 23 when the fuel level reaches the first shut-off valve 30. Thereafter, the upward movement of the central portion 5 c of the separation wall 5 is limited by the spring 32. Thereafter, as shown in FIG. 3, when the fuel level reaches the second shut-off valve 31, the fuel chamber is shut off to shut off the fuel vapor discharge pipe 24. The second shut-off valve 31 is closed by the fuel in 7. In this way, the fuel vapor in the space above the fuel level is completely eliminated from the fuel chamber 7 and the fuel tank 1.
  • the pressure in the oil supply pipe 13 decreases when the first shutoff valve 30 and the second shutoff valve 31 are closed.
  • the pressure sensor of the refueling nozzle detects that the reduced pressure is lower than a predetermined pressure
  • the supply of the fuel into the fuel chamber 7 is stopped.
  • the pressure of the fuel in the fuel chamber 7 becomes higher than the pressure of the fuel in the fuel supply pipe 13. Therefore, the check valve 10 is closed by the fuel in the fuel chamber 7. Therefore, the fuel chamber 7 is completely sealed in a state where the fuel vapor does not exist in the fuel chamber 7.
  • the refueling nozzle is pulled out from the upper opening 13a of the refueling pipe 13 and then the fuel vapor shutoff valve 17 is closed by the spring bias. Finally, the lid 14 is attached to the upper opening 13 a of the fuel supply pipe 13.
  • the operation of the fuel tank 1 during operation of the internal combustion engine of the first embodiment will be described.
  • the amount of fuel in the fuel chamber 7 decreases. Accordingly, the height of the fuel level in the fuel chamber 7 decreases, and the central portion 5c of the separation wall 5 descends. As shown in FIG. 4, the separation wall 5 projects downward into the fuel chamber 7. When the separation wall 5 is lowered, no space is formed above the fuel level because the fuel chamber 7 is sealed. Therefore, once the evaporative fuel removal processing is executed, generation of evaporative fuel in the fuel chamber 7 is prevented. For this reason, it is only necessary to provide a small charcoal canister in the fuel storage device, or it is not necessary to provide a charcoal canister.
  • the first shutoff valve 30 and the second shutoff valve 31 are opened. Therefore, a space is formed above the fuel level in the fuel chamber 7, and the space is formed when the internal combustion engine is operating. Evaporated fuel may be generated within the interval. Therefore, in the second embodiment, the evaporated fuel is eliminated by a method other than supplying the fuel into the fuel chamber 7.
  • an air pump 35 is connected to the air chamber 6 via a first connection pipe 34 instead of the air pipe 33 of the first embodiment.
  • the air pump 35 functions to increase the pressure in the air chamber 6.
  • the first connection pipe 34 is connected to the release valve 37 via the second connection pipe 36.
  • the release valve 37 opens, and the pressure in the air chamber 6 decreases. Note that the predetermined pressure is lower than the pressure at which the separation wall 5 is damaged.
  • a small hole 39 is formed in the diaphragm 38 of the release valve 37.
  • the small hole 39 communicates the second connection pipe 36 with the outside air regardless of whether the release valve 37 is opened or closed.
  • the diameter of the small hole 39 is set so as not to prevent the air pump 35 from increasing the pressure in the air chamber 6.
  • a level switch 57 is attached to the upper wall of the fuel pump chamber 18 at the highest position in the fuel tank 1.
  • the level switch 57 outputs a voltage when the fuel level reaches the level switch 57, that is, when the fuel level reaches the highest position in the fuel tank 1.
  • the fuel storage device includes an electronic control device 40.
  • the electronic control unit 40 is a digital computer, and includes a CPU (microprocessor) 42, RAM (random access memory) 43, and ROM (read-only memory) 4 4, B-RAM (backup RAM) 45, an input port 46, and an output port 47, which are interconnected by a bidirectional bus 41.
  • level switch 5 When the fuel level reaches level switch 57, level switch 5 The voltage generated in 7 is input to the input port 46 via the corresponding AD converter 48. The voltage indicating the opening or closing of the release valve 37 is input to the input port 46 via the corresponding AD converter 48. Output port 47 is connected to air pump 35 via drive circuit 49.
  • the configuration other than the above is the same as the configuration of the fuel storage device of the first embodiment. Therefore, description of the configuration other than the above is omitted.
  • the release valve 37 it is determined whether or not the release valve 37 is open.
  • the release valve 37 is closed, it is determined that the pressure in the air chamber 6 is a pressure at which the evaporative fuel removal processing can be performed.
  • the level switch 57 it is determined whether or not the level switch 57 is operated. When the level switch 57 is not operated, it is determined that the evaporative fuel removal processing should be executed.
  • the air pump 35 When the release valve 37 is closed and the level switch 57 is not operated, the air pump 35 is operated to increase the pressure in the air chamber 6. Thus, the central part 5c of the separating wall 5 moves downward toward the bottom wall 3c of the lower part 3. For this reason, the height of the fuel level that forms the space increases.
  • the fuel vapor is discharged from the fuel chamber 7 to the fuel supply pipe 13 via the circulation pipe 23 and the fuel vapor discharge pipe 24.
  • the air pump 35 is stopped.
  • the air pump 35 corresponds to a means for discharging gas from a space formed above the fuel level or a means for increasing the height of the fuel level.
  • the means for detecting the fuel level corresponds to the means for detecting the fuel level.
  • step S210 it is determined whether or not the level switch 57 is operated (ON).
  • the level switch 57 it is determined that the evaporative fuel elimination process cannot be executed, the process proceeds to step S212, the air pump 35 is stopped, and the process ends.
  • the level switch 57 is not operated (OFF)
  • step S214 it is determined whether or not the release valve 37 is opened.
  • the release valve 37 is open, it is determined that the evaporative fuel elimination process cannot be executed, and the process proceeds to step S212, where the air pump 35 is stopped and the process ends.
  • the release valve 37 is closed, it is determined that the evaporative fuel removal processing should be performed, and the process proceeds to step S216 to remove the evaporative fuel from the fuel chamber 7 by the air pump. Activate 3 5 to increase the pressure in the air chamber 6 and end the process.
  • the evaporated fuel in order to completely discharge the evaporated fuel from the fuel tank, it is necessary to supply fuel to the fuel tank until the fuel tank is full of fuel. Therefore, if the supply of fuel into the fuel chamber 7 is stopped before the fuel tank becomes full of fuel, the evaporated fuel is not completely removed from the fuel chamber 7. Therefore, in the third embodiment, even when the supply of fuel to the fuel chamber is stopped before the fuel chamber becomes full of fuel, the evaporated fuel is completely removed from the fuel chamber.
  • the fuel tank 1 has a cap lid orb switch 50.
  • the orb switch 50 is connected to a cap lid (not shown) for covering the lid 14.
  • Ovenus switch 50 is activated to output a voltage when the cap lid is opened, and keeps outputting the voltage until the cap lid is closed. Therefore, the current supply of fuel is detected by detecting the voltage at the Ovenus switch 50. You can judge that it is done.
  • the voltage generated in the orb switch 50 is input to the input port 46 via the corresponding AD converter 48.
  • the configuration other than the above is the same as the configuration of the fuel storage device of the second embodiment. Therefore, description of the configuration other than the above is omitted.
  • the release valve 37 it is determined whether or not the release valve 37 is open.
  • the release valve 37 is closed, it is determined that the pressure in the air chamber 6 is a pressure at which the evaporative fuel removal processing can be performed.
  • cap lid orb switch 50 it is determined whether or not the cap lid orb switch 50 is operated and whether or not the level switch 57 is operated.
  • the orb switch 50 is activated and the level switch 57 is not activated, it is determined that the evaporative fuel removal processing should be executed.o
  • the opening of the cap lid is permitted, and the fuel in the fuel chamber 7 is opened. Start supplying.
  • the air pump 35 operates to increase the pressure in the air chamber 6. Is done. Accordingly, the central portion 5c of the separation wall 5 descends. Therefore, the fuel vapor above the fuel level is discharged from the fuel tank 1 to the lined oil pipe 13 via the circulation pipe 23 and the fuel vapor discharge pipe 24.
  • the level switch 57 corresponds to a means for releasing gas or a means for increasing the height of the fuel level, and the level switch 57 corresponds to a means for detecting the level of the fuel level.
  • the height of the fuel level is raised to a higher position. Therefore, the amount of fuel to be supplied to increase the fuel level to the highest level in the fuel chamber 7 is smaller than the fuel amount of the first embodiment. Therefore, according to the third embodiment, the evaporated fuel can be completely removed from the fuel chamber 7 even when the supply of the fuel into the fuel chamber 7 is stopped before the fuel chamber becomes full of the fuel.
  • the fueling nozzle when the fueling nozzle detects that the height of the fuel in the fueling pipe 13 exceeds a predetermined height, the fueling nozzle used to supply the fuel into the fuel chamber is detected. Quill shuts off fuel supply
  • the predetermined height is lower than the opening of the circulation pipe 23 opening into the internal space of the oil supply pipe 13.
  • step S310 it is determined whether or not the cap lid orb switch 50 is operated (0N). When the orb switch 50 is operated, the process proceeds to step S312. On the other hand, when the open switch 50 is not operated (OFF), the process proceeds to step S318, in which the air pump 35 is stopped, and the process ends.
  • step S312 it is determined whether or not the level switch 57 is operated (0N). When the level switch 57 is operated, it is determined that the evaporative fuel removal processing does not need to be performed, and the process proceeds to step S314 to stop the air pump 35, and the process proceeds to step S31. Proceed to step 6 to permit opening of the cap lid and end the process. on the other hand, When the level switch 57 is not operated (OFF), the process proceeds to step S320.
  • step S320 it is determined whether or not the release valve 37 is open.
  • the release valve 37 it is determined that the evaporative fuel elimination process cannot be executed, and the process proceeds to step S314 to stop the air pump 35, and proceeds to step S316 to cap. Allow the lid to open and end the process.
  • the release valve 37 is closed, it is determined that the evaporative fuel elimination process can be executed, and the process proceeds to step S322 to operate the air pump 35 to increase the pressure in the air chamber 6. , End the process
  • the air pump 35 and the release valve 37 are used to execute the evaporative fuel removal processing. Therefore, the configuration of the fuel storage device becomes complicated, and the manufacturing cost of the fuel storage device increases. Therefore, in the fourth embodiment, the fuel vapor elimination process is executed with a simpler configuration.
  • the fuel storage device of the fourth embodiment will be described.
  • the air pump 35, the release valve 37, the first connection pipe 34, and the second connection pipe 36 of the second embodiment are eliminated, and the atmosphere pipe 33 is removed. It is connected to the upper part 2 of the fuel tank 1.
  • the chocolate canister 26 of the second embodiment is omitted, and the electromagnetic valve 51 is connected to the first evaporated fuel purge pipe 25 and the second evaporated fuel purge pipe 27.
  • the fuel supply pipe 13 is connected to the intake passage 52 via the first evaporated fuel purge pipe 25, the second evaporated fuel purge pipe 27 and the solenoid valve 51.
  • the solenoid valve 51 cuts off the communication between the oil supply pipe 13 and the intake passage 52.
  • the fuel storage device includes a temperature sensor 55 that generates a voltage corresponding to the temperature of the cooling water for cooling the internal space. Temperature sensor 5 5 Connected to input port 46 via corresponding AD converter 48. The output port 47 is connected to the solenoid valve 51 via a drive circuit 49.
  • the configuration other than the above is the same as the configuration of the fuel storage device of the second embodiment. Therefore, description of the configuration other than the above is omitted.
  • the cooling water temperature is higher than a predetermined temperature (for example, 70 ° C.).
  • the predetermined temperature is higher than the temperature of the cooling water when the cooling water cools the internal combustion engine in the steady operation state.
  • the operating state of the internal combustion engine is a state in which the fuel vapor removal processing can be executed.
  • the level switch 57 it is determined whether or not the level switch 57 is operated. When the level switch 57 is not operated, it is determined that the evaporative fuel removal processing should be executed.
  • the solenoid valve 51 When the operation state of the internal combustion engine is a state in which the evaporative fuel elimination process can be executed, and the evaporative fuel elimination process is to be executed, the solenoid valve 51 is opened, and the negative pressure in the intake passage 52 enters the fuel chamber 7. be introduced.
  • the introduced negative pressure discharges the fuel vapor from the fuel chamber 7, descends at the central portion 5 c of the separation wall 5, and increases the fuel level.
  • the electromagnetic valve 51 When the operating state of the internal combustion engine is not in a state in which the evaporative fuel elimination process can be executed, or when there is no need to execute the evaporative fuel elimination process, the electromagnetic valve 51 is closed.
  • the evaporated fuel can be removed from the fuel chamber by the fuel storage device having a simple configuration without the air pump and the release valve.
  • purging of the fuel vapor from the fuel chamber to the intake passage is performed by a means for discharging gas from a space formed above the fuel level or a means for increasing the height of the fuel level.
  • the level switch 57 corresponds to the means for detecting the fuel level.
  • the evaporative fuel removal processing may be controlled based on the engine speed, the engine load, the amount of air introduced into the combustion chamber of the internal combustion engine, or the combustion state in the combustion chamber. For example, when the engine speed, the engine load or the amount of air introduced into the combustion chamber of the internal combustion engine is lower than a predetermined value, or when the combustion state is a stratified combustion state, the evaporated fuel elimination process is stopped. .
  • step S410 it is determined whether or not the level switch 57 is operated (ON).
  • the level switch 57 it is determined that the evaporative fuel elimination process does not need to be performed, and the process proceeds to step S412 to close the solenoid valve 51 and end the process.
  • the level switch 57 is not operated (OFF)
  • the process proceeds to step S414.
  • step S414 it is determined whether the temperature T of the cooling water is higher than a predetermined temperature T0 (T0).
  • T a predetermined temperature
  • T0 a predetermined temperature
  • T ⁇ T it is determined that the operating state of the internal combustion engine is in a state in which the evaporative fuel removal processing can be executed, and the process proceeds to step S 4 16 to open the solenoid valve 51 and end the processing.
  • T ⁇ T it is determined that the operating state of the internal combustion engine is not in a state in which the evaporative fuel elimination process can be executed, and the process proceeds to step S 4 12 to close the solenoid valve 51, and the process ends. I do.
  • the charcoal canister when a charcoal canister should be provided in the fuel storage device, the charcoal canister is provided in the first evaporative fuel purge pipe 25 between the lined oil pipe 13 and the electromagnetic valve 51. Provided.
  • the solenoid valve 51 opens, the pressure inside the charcoal canister is prevented from becoming excessively low when the solenoid valve 51 opens, and the solenoid valve 51 closes. Sometimes it communicates with the outside air to prevent the pressure in the fuel chamber 7 from becoming excessively high. Therefore, when the fuel storage device of the fourth embodiment includes a charcoal canister, the negative pressure is not introduced into the fuel chamber 7 because the charcoal canister communicates with the outside air. Evaporated fuel inside is not excluded. Therefore, in the fifth embodiment, even when the fuel storage device includes a charcoal canister, a negative pressure is introduced into the fuel chamber 7.
  • a fuel canister 26 is provided in a first evaporative fuel purge pipe 25 between an oil supply pipe 13 and a solenoid valve 51.
  • the charcoal canister 26 communicates with the outside air through an atmosphere release pipe 28.
  • the air release pipe 28 is provided with a control valve 58 for shutting off the air release pipe 28.
  • the control valve 58 includes a positive pressure valve and a negative pressure valve. Further, the control valve 58 is opened at a predetermined positive pressure to reduce the pressure in the chamber canister 26, and is opened at a predetermined negative pressure to open the chamber. Raise the pressure in Lucyanister 26.
  • the predetermined positive pressure is the pressure that the fuel tank 1, the charcoal canister 26, their associated components and the separating wall 5 can withstand, or the evaporative fuel is the fuel tank 1, It is below the pressure at which it does not flow out of the Yakor Canister 26 or related components.
  • the predetermined negative pressure is higher than the pressure that the fuel tank 1, the chocolate tank 26, related components and the separation wall 5 can withstand.
  • the configuration other than the above is the same as the configuration of the fuel storage device of the fourth embodiment. Therefore, description of the configuration other than the above is omitted.
  • whether the temperature of the cooling water is higher than a predetermined temperature It is determined whether or not it is.
  • the temperature of the cooling water is higher than a predetermined temperature, it is determined that the temperature of the cooling water is a temperature at which the evaporative fuel removal processing can be executed.
  • the predetermined temperature is higher than the temperature of the cooling water when cooling the internal combustion engine in which the cooling water is in a steady operation state.
  • the level switch 57 it is determined whether or not the level switch 57 is operated. When the level switch 57 is not operated, it is determined that the evaporative fuel removal processing should be executed.
  • the negative pressure in the intake passage 52 is reduced through the second evaporative fuel purge pipe 27 to the charcoal canister 2.
  • Solenoid valve 51 is opened for introduction to 6.
  • a negative pressure is introduced into the charcoal canister 26
  • the pressure in the charcoal canister 26 is lower than a predetermined positive pressure and higher than a predetermined negative pressure by the action of the control valve 58.
  • the control valve 58 opens, and a negative pressure lower than the predetermined negative pressure is introduced into the fuel chamber 7.
  • the negative pressure in the intake passage 52 is introduced into the fuel chamber 7 via the first evaporated fuel purge pipe 25, the circulation pipe 23, and the evaporated fuel discharge pipe 24.
  • the negative pressure in the intake passage is introduced into the fuel chamber 7 in order to eliminate the evaporated fuel above the fuel level.
  • purging of fuel vapor from the fuel chamber to the intake passage corresponds to a means for discharging gas from a space formed above the fuel level or a means for increasing the height of the fuel level.
  • the level switch 57 corresponds to a means for detecting the fuel level.
  • the temperature of the cooling water is not a temperature at which the evaporative fuel removal processing can be performed.
  • step S510 it is determined whether or not the level switch 57 is operated (ON). When the level switch 57 is operated, it is determined that it is not necessary to execute the evaporative fuel removal processing, and the process proceeds to step S514 to close the solenoid valve 51 and end the processing. On the other hand, when the level switch 57 is not operated (0 FF), it is determined that the evaporative fuel elimination process should be performed, and the process proceeds to step S 516.
  • step S516 it is determined whether the temperature T of the cooling water is higher than a predetermined temperature T0 (T> T0).
  • T> T0 the temperature of the cooling water is not the temperature at which the evaporative fuel removal processing can be executed, and the process proceeds to step S514, where the solenoid valve 51 is closed and the processing ends.
  • T ⁇ TO the temperature of the cooling water is a temperature at which the evaporative fuel elimination process can be executed, and the process proceeds to step S518 to open the solenoid valve 51 to introduce a negative pressure into the fuel chamber 7. The process is terminated and the process is terminated.
  • the pressure in the air chamber 6 is maintained at the pressure at which the release valve 37 opens when the air pump is operated. After the air pump 35 is stopped, the pressure in the air chamber 6 is released through the small hole 39 of the release valve 37, and is maintained at the atmospheric pressure.
  • the small holes 39 are small enough to prevent the pressure inside the air chamber 6 from suddenly dropping and to prevent the air pump 35 from increasing the pressure inside the air chamber 6. It takes some time for the pressure to be fully released. Therefore, if the pressure in the air chamber 6 is too high, fuel cannot flow into the fuel chamber 7 through the fueling nozzle. Therefore, in the sixth embodiment, even after the pressure in the air chamber 6 increases, fuel can flow into the fuel chamber 7 through the refueling nozzle.
  • the second release valve 59 is connected to the second connection pipe 36 as shown in FIG.
  • the second release valve 59 is opened to release the pressure in the air chamber 6 when the pressure in the air chamber 6 is higher than a second predetermined pressure.
  • the second predetermined pressure is lower than the pressure of the fuel when the fuel was supplied by the refueling nozzle.
  • the amount of air released from the second release valve 59 is less than the amount of air discharged by the air pump 35 and the amount of air flowing out through the small hole 39 of the release valve 37. Many.
  • the configuration other than the above is the same as the configuration of the fuel storage device of the third embodiment. Therefore, description of the configuration other than the above is omitted.
  • the evaporative fuel removal process of the sixth embodiment is executed in the same manner as in the third embodiment. Further, similarly to the third embodiment, the air pump 35 is stopped when the level switch 57 is operated or when the release valve 37 is opened.
  • the pressure in the air chamber 6 is higher than the second predetermined pressure after the air pump 35 is stopped. Therefore, the pressure in the air chamber 6 becomes lower than the fuel pressure when the fuel is supplied by the fueling nozzle earlier than in the third embodiment. Therefore, fuel can flow into the fuel chamber 7 through the fueling nozzle.
  • the rate of increase of the pressure in the air chamber is determined when the pressure is in a range between the opening pressure of the second release valve 59 and the opening pressure of the release valve 37. Is lower than the rate of increase of the pressure in the air chamber.
  • the flowchart of the sixth embodiment is the flowchart of the third embodiment. Is the same as Therefore, description is omitted.
  • the pressure in the air chamber 6 when the pressure in the air chamber 6 is higher than the second predetermined pressure, the pressure in the air chamber 6 is increased while the pressure in the air chamber 6 is released by the second release valve 59. Increased by pump 35. Therefore, the rate of increase in the pressure in the air chamber 6 in the sixth embodiment is lower than the rate of increase in the pressure in the air chamber 6 in the third embodiment without the second release valve. For this reason, in the sixth embodiment, the time from when the orb switch 50 is operated forcibly until the opening of the cap lid is permitted is longer than the time in the third embodiment.
  • the fuel can flow into the fuel chamber 7 through the fuel nozzle and the rate of increase in the pressure in the air chamber is reduced in the sixth embodiment.
  • the rate of increase of the pressure in the air chamber at
  • a fuel storage device according to a seventh embodiment of the present invention will be described.
  • a solenoid valve 60 is connected to the second connection pipe 36 instead of the release valve 37 and the second release valve 59 as shown in FIG.
  • the solenoid valve 60 is connected to the output pump 47 via a corresponding drive circuit 49 and is controlled by the electronic control unit 40.
  • the solenoid valve 60 shuts off the communication between the air chamber 6 and the outside air.
  • a pressure sensor 61 for detecting the pressure in the air chamber 6 is attached to the upper part 2 of the fuel tank 1.
  • the pressure sensor 61 is connected to the input port 46 via the corresponding AD converter 48.
  • the configuration other than the above is the same as the configuration of the fuel storage device of the sixth embodiment. Therefore, description of the configuration other than the above is omitted.
  • the seventh embodiment it is determined whether the pressure in the air chamber 6 is lower than a predetermined maximum pressure.
  • the predetermined maximum pressure is lower than the pressure which is damaged by the pressure in the separation wall 5 ⁇ the air chamber 6.
  • the pressure is lower than the predetermined maximum pressure, it is determined that the state of the internal combustion engine and the fuel tank 1 is in a state where the evaporative fuel removal processing can be executed.
  • the cap lid orb switch 50 and the level switch 57 are operated.
  • the cap lid orb switch 50 is activated and the level switch 57 is not activated, it is determined that the evaporative fuel removal processing should be executed ⁇ "0.
  • the seventh embodiment it is determined whether the pressure in the air chamber 6 is lower than a second predetermined pressure.
  • the second predetermined pressure is lower than the pressure of the fuel when the fuel was supplied by the refueling nozzle.
  • the pressure in the air chamber 6 is lower than the second predetermined pressure, it is determined that the pressure in the air chamber 6 is a pressure that allows the opening of the cap lid.
  • the state of the internal combustion engine and the fuel tank 1 is a state in which the evaporative fuel elimination process can be executed.
  • the solenoid valve 60 is closed, the air pump 35 is operated, and the air The pressure in chamber 6 is increased. Therefore, the fuel vapor above the fuel level is discharged from the fuel chamber 7 through the circulation pipe 23 and the fuel vapor discharge pipe 24.
  • the rate of increase in the pressure in the air chamber 6 is higher than the rate of increase in the pressure in the air chamber in the sixth embodiment.
  • the air pump 35 When it is not necessary to execute the evaporative fuel removal processing, the air pump 35 is stopped, the solenoid valve 60 is opened, and the pressure in the air chamber 6 is made lower than the second predetermined pressure, and the air pump 35 is stopped.
  • the air pump 35 When the internal combustion engine and the fuel tank 1 are not in a state in which the evaporative fuel removal processing can be executed, the air pump 35 is stopped and the solenoid valve 60 is turned on. The valve is opened to lower the pressure in the air chamber 6 below a predetermined maximum pressure.
  • the air pump 35 is used to release gas or fuel from a space formed above the fuel level.
  • the level switch 57 corresponds to a means for detecting the height of the fuel level, and the level switch 57 corresponds to a means for detecting the level of the fuel level.
  • step S71 it is determined whether or not the cap lid orb switch 50 is operated (ON). When the orb switch 50 is operated, the process proceeds to step S712. On the other hand, when the open switch 50 is not operated (OFF), that is, when the supply of the fuel into the fuel chamber 7 is completed, the process proceeds to step S722, in which the electromagnetic valve 60 is closed and the air is released. The pressure in the chamber 6 is maintained relatively high, the flow proceeds to step S724, the air pump 35 is stopped, the flow proceeds to step S726, the refueling flag is reset, and the processing ends.
  • the lined oil flag is set when the pressure in the air chamber 6 is a pressure at which the evaporative fuel removal processing cannot be performed, and is reset when the supply of fuel into the fuel chamber is completed.
  • step S712 it is determined whether or not the level switch 57 is operated ( ⁇ N). When the level switch 57 is operated, it is determined that it is not necessary to execute the evaporative fuel removal processing.Then, the process proceeds to step S 742, the air pump 35 is stopped, and the step S 7 4 is performed. Proceeding to step 4, the solenoid valve 60 is opened to maintain the pressure in the air chamber 6 below the second predetermined pressure, and proceeding to step S7 46 to permit the cap lid to be opened And ends the processing.
  • step S712 the level switch 57 is activated in step S712. If not (OFF), it is determined that the evaporative fuel removal processing should be executed, and the flow advances to step S714.
  • step S714 it is determined whether the pressure P in the air chamber 6 is lower than a predetermined maximum pressure Pmax (P-Pmax).
  • P-Pmax a predetermined maximum pressure
  • P ⁇ P max the pressure in the air chamber 6 is higher than the predetermined maximum pressure, so it is determined that the pressure in the air chamber 6 is not a pressure at which the evaporative fuel removal processing can be executed. Proceeding to 28, the lined oil flag is set, and proceeding to step S730, the solenoid valve 60 is opened to reduce the pressure in the air chamber 6, and then proceeding to step S732.
  • step S716 it is determined whether or not the oil flag has been reset.
  • the refueling flag is reset, it is determined that the pressure in the air chamber 6 is at a pressure at which the evaporative fuel elimination process can be executed, and the process proceeds to step S 718 to open the solenoid valve 60. Proceeding to S720, the air pump 35 is operated, and the process ends.
  • step S732 it is determined whether or not the pressure P in the air chamber 6 is lower than a second predetermined pressure P2 (P ⁇ P2).
  • P ⁇ P2 a second predetermined pressure at which the supply of fuel into the fuel chamber 7 is permitted
  • the process proceeds to step S734 to close the solenoid valve 60.
  • the air pump 35 is operated to maintain the pressure in the air chamber 6 relatively high during the supply of fuel into the fuel chamber 7, and then proceeding to step S738. Permits to open the lid and ends the process.
  • the inclination of the degree of increase in the pressure in the air chamber is made smaller than the inclination when the fuel moves largely in the fuel chamber.
  • an electromagnetic valve 60 is connected to the second connection pipe 36 instead of the release valve 37 of the second embodiment as shown in FIG.
  • the solenoid valve 60 is connected to an output port 47 via a corresponding drive circuit 49, and is controlled by an electronic control unit 40.
  • the solenoid valve 60 shuts off the communication between the air chamber 6 and the outside air.
  • a pressure sensor 61 for detecting the pressure in the air chamber 6 is provided in the upper part 2 of the fuel tank 1.
  • the pressure sensor 61 is connected to the input port 46 via the corresponding AD converter 48.
  • a fuel level gauge 62 for detecting the amount of fuel in the fuel chamber 7 by detecting the position of the separation wall 5 is provided in the upper part 2 of the fuel tank 1.
  • the fuel level gauge 62 is connected to the input port 46 via a corresponding AD converter 48.
  • the fuel storage device includes a temperature sensor 55 for generating a voltage corresponding to the temperature of the cooling water for cooling the internal combustion engine.
  • the temperature sensor 55 is connected to the input port 46 via the corresponding AD converter 48.
  • the configuration other than the above is the same as the configuration of the fuel storage device of the second embodiment. Therefore, description of the configuration other than the above is omitted.
  • the evaporative fuel removal processing according to the eighth embodiment it is determined whether the temperature of the cooling water is higher than the predetermined temperature and the fuel amount in the fuel chamber 7 is higher than the predetermined fuel amount.
  • the predetermined temperature is higher than the temperature of the cooling water when the cooling water cools the internal combustion engine in the steady operation state, and the predetermined fuel amount is the height of the fuel level when the separation wall 5 is lowered. More than enough to rise to the highest position in fuel chamber 7.
  • the evaporative fuel elimination processing is executed, that is, the solenoid valve 60 is closed.
  • the valve is operated, and the air pump 35 is operated to increase the pressure in the air chamber 6. Accordingly, the central portion 5c of the separation wall 5 descends, and the fuel vapor is removed from the space above the fuel level in the fuel chamber 7.
  • the evaporative fuel elimination process is executed, and the rate of increase of the pressure in the air chamber 6 is determined based on the pressure in the air chamber 6 detected by the pressure sensor 61. It is determined whether or not the pressure is higher than the pressure rise rate at which the fuel may move significantly.
  • the air pump 35 When the rate of increase in pressure in the air chamber 6 is greater than the rate of pressure increase in which fuel may move significantly in the fuel chamber 7, the air pump 35 is stopped. On the other hand, the rate of pressure increase in the air chamber 6 When the pressure rise rate that can be moved is smaller, the air pump is activated by 3 5 powers. Therefore, the rate of increase in the pressure in the air chamber 6 is maintained smaller than the rate of pressure increase in which the fuel may move significantly in the fuel chamber 7, and the movement of the fuel in the fuel chamber 7 is prevented.
  • the evaporative fuel elimination processing is stopped, that is, the air pump 35 is stopped. Then, the solenoid valve 60 is opened.
  • the air pump 35 corresponds to a means for discharging gas from a space formed above the fuel level or a means for increasing the height of the fuel level
  • the level switch 57 or The fuel level gauge 62 corresponds to a means for detecting the fuel level.
  • step S810 it is determined whether the temperature T of the cooling water is higher than a predetermined temperature T O (T> T 0).
  • the predetermined temperature is a temperature at which purging of the fuel vapor into the intake passage 52 is permitted. If ⁇ > ⁇ 0, it is determined that the temperature of the cooling water is a temperature at which the purge of the fuel vapor into the intake passage 52 can be permitted, and the process proceeds to step S812.
  • the temperature of the cooling water is a temperature at which the purge of the evaporated fuel into the intake passage 52 cannot be permitted, and the process proceeds to step S840, in which the solenoid valve 60 is opened, Proceeding to step S842, the air pump 35 is stopped, and the process ends.
  • step S812 it is determined whether or not the level switch 57 is not operated (OFF). When the level switches 57 are not operated, it is determined that the evaporative fuel removal processing should be performed. Go to 8 1 4 On the other hand, when the level switch 57 is operated (ON), it is determined that it is not necessary to execute the evaporative fuel removal processing, and the process proceeds to step S840, in which the solenoid valve 60 is opened, and the step S840 is performed. Proceeding to S842, the air pump 35 is stopped, and the process ends.
  • step S814 it is determined whether the fuel amount F in the fuel chamber 7 is larger than a predetermined fuel amount F0 (F> F0).
  • the predetermined amount of fuel is greater than the amount of fuel sufficient to raise the level of the fuel level to the highest level in the fuel chamber 7 when the separation wall 5 descends.
  • step S814 the process proceeds to step S840, in which the solenoid valve 60 is opened, the process proceeds to step S842, the air pump 35 is stopped, and the process ends. I do.
  • step S816 it is determined whether or not the solenoid valve 60 is closed.
  • the process proceeds to step S8 18 to add a predetermined pressure ⁇ to the previous target pressure, thereby calculating the current target pressure Pn. Proceed to 2 4.
  • step S 8 16 the process proceeds to step S 8 36, the solenoid valve 60 is closed, and the process proceeds to step S 8 38 to set the pressure.
  • the pressure in the air chamber 6 detected by the sensor 61 is input to the target pressure Pn as an initial target pressure, and the process ends.
  • step S820 it is determined whether the target pressure Pn is higher than the maximum pressure Pmax (Pn> Pmax). The maximum pressure is lower than the pressure at which the separation wall 5 may be damaged by the pressure in the air chamber 6. If Pn> Pmax in step S820, the process proceeds to step S822, where the maximum pressure Pmax is input to the target pressure, and the pressure in the air chamber 6 is limited to the maximum pressure. Go to 8 2 4.
  • step S8284 it is determined whether or not the pressure P in the air chamber 6 is lower than the maximum pressure Pmax (P and Pmax).
  • P ⁇ Pmax it is determined that the pressure in the air chamber 6 is a pressure at which the evaporative fuel removal processing can be executed, and the process proceeds to step S826.
  • P ⁇ Pmax it is determined that the pressure in the air chamber 6 is a pressure at which the evaporative fuel elimination process cannot be performed, and the process proceeds to step S832 to open the solenoid valve 60. Proceeding to step S834, the air pump 35 is stopped, and the process ends.
  • step S8226 it is determined whether the pressure P in the air chamber 6 is lower than the target pressure Pn (P ⁇ Pn).
  • P ⁇ Pn it is determined that the rate of increase in the pressure in the air chamber 6 is smaller than the rate of increase in which the fuel may move significantly in the fuel chamber, and the process proceeds to step S828, where the solenoid valve 60 is activated. The valve is closed, the flow proceeds to step S830, the air pump 35 is operated, and the process ends.
  • step S826 it is determined that the rate of increase in the pressure in the air chamber 6 is larger than the rate of increase in which fuel may move greatly in the fuel chamber 7, and Proceed to 8 3 4 to stop the air pump 35 and end the process.
  • the evaporated fuel released from the fuel chamber is introduced into the intake passage. Therefore, the air-fuel ratio of the air-fuel mixture is reduced by the introduced fuel vapor, that is, the air-fuel ratio is not maintained at the desired predetermined air-fuel ratio. Therefore, in the ninth embodiment, when the released fuel vapor is introduced into the intake passage, the air-fuel ratio is maintained at a desired predetermined air-fuel ratio.
  • the fuel storage device includes an air-fuel ratio sensor 63 that generates a voltage corresponding to the air-fuel ratio in the intake passage.
  • the air-fuel ratio sensor 63 has an oxygen sensor or a linear sensor that generates a voltage corresponding to the oxygen concentration in the exhaust gas.
  • the air-fuel ratio sensor 63 is connected to the input port 46 via the corresponding AD converter 48.
  • the configuration other than the above is the same as the configuration of the fuel storage device of the eighth embodiment. Therefore, description of the configuration other than the above is omitted.
  • the pressure in the air chamber 6 is predetermined. It is determined whether the pressure is lower than the set pressure.
  • the predetermined temperature is higher than the temperature of the cooling water when the cooling water cools the internal combustion engine in a steady operation state, and the predetermined fuel amount is the highest in the fuel chamber 7 when the separation wall 5 is lowered.
  • the predetermined pressure is lower than the pressure at which the separation wall may be damaged by the pressure in the air chamber 6 which is more than the amount of fuel sufficient to raise the fuel level to the height o
  • the internal combustion engine When the temperature of the cooling water is higher than the predetermined temperature, the amount of fuel in the fuel chamber 7 is higher than the predetermined amount of fuel, and the pressure in the air chamber 6 is lower than the predetermined pressure, the internal combustion engine and It is determined that the state of fuel tank 1 is in a state where purge of evaporated fuel can be permitted.
  • the level switch 57 it is determined whether or not the level switch 57 is not operated. When the level switch 57 is not operated, it is determined that the evaporative fuel removal processing should be executed.
  • the air-fuel ratio detected by the air-fuel ratio sensor 63 is larger than a predetermined air-fuel ratio.
  • the predetermined air-fuel ratio is a desired air-fuel ratio. If the detected air-fuel ratio is larger than the predetermined air-fuel ratio, it is determined that the air-fuel ratio is an air-fuel ratio that allows the evaporative fuel removal processing to be continuously performed.
  • the state of the internal combustion engine and the fuel tank 1 is a state in which the fuel vapor can be purged, the fuel vapor elimination processing should be performed, and the air-fuel ratio permits the fuel fuel elimination processing to be continuously performed.
  • the evaporative fuel removal processing is executed, that is, the solenoid valve 60 is closed, the air pump 35 is operated, and the pressure in the air chamber 6 is increased. Therefore, the central portion 5c of the separation wall 5 descends, and the fuel vapor is removed from the space in the fuel chamber 7 above the fuel level.
  • the air-fuel ratio is set at the air-fuel ratio at which the evaporative fuel elimination process can be continued. If not, the fuel vapor elimination process is stopped, that is, the air pump 35 is stopped.
  • the amount of evaporative fuel introduced into the intake passage is controlled so that the air-fuel ratio is maintained at a desired predetermined air-fuel ratio.
  • the fuel vapor removal processing is stopped, that is, the air pump 35 is stopped. Stopped.
  • the purging of the fuel vapor into the intake passage corresponds to a means for discharging gas from a space formed above the fuel level or a means for increasing the level of the fuel level
  • the gauge 62 corresponds to a means for detecting the fuel level.
  • steps S910, 912, and 914 of the flowchart correspond to steps S810, 812, and 814 of FIG. 17, respectively. Therefore, the explanation of these steps is omitted. I do.
  • step S916 If F> F0 in step S914, the process proceeds to step S916. On the other hand, when F ⁇ F0, the process proceeds to step S922, in which the solenoid valve 60 is opened, the process proceeds to step S926, the air pump 35 is stopped, and the process ends.
  • step S916 it is determined whether the pressure P in the air chamber 6 is lower than the maximum pressure Pmax (P ⁇ Pmax).
  • P ⁇ PmaX it is determined that the pressure in the air chamber 6 is a pressure at which the evaporative fuel removal processing can be executed, and the process proceeds to step S ⁇ b> 918.
  • P ⁇ Pmax it is determined that the pressure in the air chamber 6 is not a pressure at which the evaporative fuel removal processing can be executed, and the process proceeds to step S9224 to open the solenoid valve 60, and Proceed to 9 26 to stop the air pump 35 and end the process.
  • Step S918 it is determined whether or not the air-fuel ratio AF is larger than a desired predetermined air-fuel ratio A F0 (A F> A F 0).
  • a F a desired predetermined air-fuel ratio
  • AF> AF0 it is determined that the air-fuel ratio is an air-fuel ratio that allows the evaporative fuel elimination process to continue to be executed. Then, the process proceeds to step S920, the solenoid valve 60 is closed, and the air pump 35 operates. And the process ends.
  • the supply of the fuel to the fuel chamber is executed when the pressure in the air chamber is maintained at an increased state. Therefore, when the supply of fuel to the fuel chamber is stopped, the increased pressure in the air chamber causes the fuel in the fuel chamber to flow back to the fuel supply pipe. Therefore, in the tenth embodiment, the backflow of the fuel in the fuel chamber to the fuel supply pipe is prevented.
  • a fuel storage device according to a tenth embodiment of the present invention will be described.
  • a fuel level gauge 62 for detecting the amount of fuel in the fuel chamber by detecting the position of the separation wall 5 is provided in the upper part 2 of the fuel tank 1.
  • Can be The fuel level gauge 62 is of a pendulum type, and one end of the pendulum is disposed in the central portion 5c of the separation wall 5, and a voltage is generated according to the angle of the pendulum (that is, the position of the fuel level). The generated voltage is input to the input port 46 via the corresponding AD converter 48.
  • the configuration other than the above is the same as the configuration of the fuel storage device of the seventh embodiment. Therefore, description of the configuration other than the above is omitted.
  • the evaporated fuel elimination processing similar to the evaporated fuel elimination processing in the seventh embodiment is executed. Therefore, the description of the fuel vapor elimination process until the opening of the cap lid is permitted is omitted.
  • the supply of fuel to the fuel chamber 7 is executed until the inside of the fuel chamber 7 becomes full of fuel after the cap lid is opened.
  • the electromagnetic valve 60 when a predetermined time has elapsed, the electromagnetic valve 60 is opened, and the pressure in the air chamber 6 decreases.
  • the predetermined time is the time from when the fuel chamber 7 is detected to be fueled until the fuel supply to the fuel chamber 7 is stopped.
  • the air pump 35 or the fuel level gauge 62 corresponds to a means for discharging gas from a space formed above the fuel level or a means for raising the level of the fuel level.
  • level switch 57 corresponds to a means for detecting the height of the fuel level.
  • step S1010 of FIG. 21 it is determined whether or not the cap cover orb switch 50 is operated (ON). When the orbnas switch 50 is operated, the flow proceeds to step S101. On the other hand, when the orb switch 50 is not operated (OFF), it is determined that the supply of fuel into the fuel chamber 7 should not be performed, and the process proceeds to step S 1 500 in FIG. To set the end flag, proceed to step S1052, stop the air pump 35, proceed to step S1054, open the solenoid valve 60, and proceed to step S105. Proceed to. The end flag is set when the cap lid is closed, and is reset when a first lined oil flag, a second oil supply flag, and a counter flag, which will be described later, are reset.
  • step S101 of FIG. 21 it is determined whether or not the level switch 57 is operated (0N).
  • the level switch 57 it is determined that it is not necessary to execute the evaporative fuel removal processing, and the process proceeds to step S1024, where the second refueling flag is set, and the process proceeds to step S104.
  • the air pump 35 is stopped, proceeding to step S1028, opening the solenoid valve 60, proceeding to step S1030, and opening the cap lid. Is permitted, and the fuel supply into the fuel chamber 7 is executed.
  • the second refueling flag is set when the level switch 57 is not operated, and reset when the cap lid is closed.
  • step S101 it is determined whether the pressure P in the air chamber 6 is lower than the maximum pressure Pmax (P ⁇ Pmax). The maximum pressure is lower than the pressure at which the separation wall 5 may be damaged by the pressure in the air chamber 6.
  • P ⁇ P max it is determined that the pressure in the air chamber 6 is a pressure at which the evaporative fuel removal processing can be executed, and the process proceeds to step S106.
  • step S102 it is determined that the pressure in the air chamber 6 is not a pressure at which the evaporative fuel removal processing can be executed, and the process proceeds to step S102, where the first refueling flag is set, and Proceed to S1026 to stop the air pump 35, proceed to step S1028 to open the solenoid valve 60, and proceed to step S1030 to open the cap lid. Strongly permitted, proceed to step S1032.
  • the first lined oil flag is set when the pressure in the air chamber 6 is higher than the maximum pressure, and reset when the cap lid is closed.
  • step S106 it is determined whether the first lined oil flag is reset or not.
  • the first refueling flag it is determined that the pressure in the air chamber 6 has not reached the maximum pressure, and the evaporative fuel removal processing is executed, that is, the process proceeds to step S108.
  • the solenoid valve 60 is closed, the process proceeds to step S102, the air pump 35 is operated, the pressure in the air chamber 6 is increased, and the process ends.
  • step S106 when the first lined oil flag is set in step S106, it is determined that the evaporative fuel removal processing should not be performed even if the pressure in the air chamber 6 is lower than the maximum pressure. Proceed to 1026 to stop the air pump 35, proceed to step S1028, open the solenoid valve 60, and proceed to step S1030 to open the cap lid. Is permitted, and the process proceeds to Step S1032.
  • step S1032 it is determined whether the counter flag is reset or not.
  • the counter flag is used when fuel chamber 7 is filled with fuel. Set at a certain time and reset when the cap lid is closed. When the counter flag is reset, it is determined that the fuel chamber 7 has not become exhausted with fuel, and the flow proceeds to step S1034. On the other hand, when the counter flag is set, it is determined that the fuel chamber 7 is full of fuel, and the flow proceeds to step S1042.
  • step S1034 it is determined whether the fuel chamber 7 is full of fuel.
  • the flow proceeds to step S1036 to reset the count, the flow proceeds to step S1038, the power counter flag is set, and the processing is terminated.
  • step S104 it is determined whether or not the second refueling flag is set. .
  • the second refueling flag it is determined that there is no need to execute the evaporative fuel removal processing, and the processing ends.
  • the second refueling flag is reset, it is determined that the evaporative fuel removal processing should be performed, and the flow proceeds to step S1044.
  • step S1042 it is determined whether the count t is smaller than a predetermined count t0 (t ⁇ t0).
  • the predetermined power point is a period between when it is detected that the fuel chamber 7 is full of fuel and when the supply of fuel to the fuel chamber 7 is stopped. If t ⁇ t0, the flow advances to step S1043 to count up the count, and the flow advances to step S1044.
  • step S1042 it is determined that the supply of fuel to the fuel chamber 7 has been stopped, and the process proceeds to step S1505, where the end flag is set, and step S1 Proceeding to 052, the air pump 35 is stopped, proceeding to step S1054, opening the solenoid valve 60 force, and proceeding to step S1056.
  • step S1044 it is determined whether or not the pressure P in the air chamber 6 is lower than a second predetermined pressure P2 (P ⁇ P2). The second predetermined pressure is lower than the fuel pressure when the fuel was supplied by the refueling nozzle.
  • step S1046 the pressure in the air chamber 6 is a pressure at which fuel supply into the fuel chamber 7 can be permitted. Proceeding to step S104, the air pump 35 is operated, and the process ends.
  • step S1044 it is determined that the pressure in the air chamber 6 is a pressure that does not permit the supply of fuel into the fuel chamber 7, and the process proceeds to step S1052. Then, the air pump 35 is stopped, the flow proceeds to step S1054, the solenoid valve 60 is opened, and the flow proceeds to step S1056.
  • step S1056 it is determined whether or not the end flag has been set.
  • the end flag it is determined that the supply of fuel into the fuel chamber 7 has been completed, and the flow proceeds to step S1058, where the first lined oil flag is reset, and the flow proceeds to step S1. Proceeding to 0600, the second refueling flag is reset, proceeding to step S1062, resetting the counter flag, proceeding to step S1064, resetting the end flag, and processing To end.
  • step S1056 it is determined that the supply of fuel into the fuel chamber 7 has been completed, and the process ends.
  • the fuel pump 19 is disposed in the fuel tank. Since the shape of the fuel pump 19 is not simple, the separation wall 5 cannot contact the fuel level around the fuel pump 19. Therefore, a space is formed around the fuel pump 19 between the separation wall 5 and the fuel level. Therefore, in the eleventh embodiment, around the fuel pump 19 No space is formed between the separation wall 5 and the fuel level.
  • the fuel pump 19 is disposed outside the fuel tank 1 as shown in FIG.
  • the fuel pump 19 is connected to the fuel filter 21 via a fuel pump pipe 19a.
  • the fuel pump pipe 19 a extends through the lower part 3 below the lower opening of the lined oil pipe 13.
  • the fuel filter 21 is disposed in the fuel chamber 7.
  • the pressure regulator 20 is arranged downstream of the fuel pump 19.
  • a fuel return passage 64 extends from the pressure regulator 20 into the fuel chamber 7.
  • the fuel return passage 64 functions to return excess fuel into the fuel chamber 7.
  • the fuel storage device does not have a pump chamber, the fuel vapor discharge pipe is eliminated.
  • the level switch 57 is located in the lower part 3 adjacent to the fixed part 8.
  • the configuration other than the above is the same as the configuration of the fuel storage device of the fourth embodiment. Therefore, description of the configuration other than the above is omitted.
  • the purging of the fuel vapor into the intake passage corresponds to a means for discharging gas from a space formed above the fuel level or a means for increasing the height of the fuel level, and a level switch.
  • H57 corresponds to the means for detecting the fuel level.
  • the lower opening of the fuel supply pipe 13 is located above the highest position in the fuel chamber 7. In this case, the fuel in the lined oil pipe 13 is completely eliminated.
  • the configuration other than the above is the same as the configuration of the fuel storage device of the first embodiment. Therefore, description of the configuration other than the above is omitted.
  • the supply of fuel to the fuel chamber corresponds to means for discharging gas from a space formed above the fuel level or means for increasing the height of the fuel level.
  • the air chamber 6 is connected to the air pump 35 via a first connection pipe 34 instead of the atmosphere pipe 33.
  • the first connection pipe 34 is connected to the solenoid valve 60 via the second connection pipe 36 .
  • the solenoid valve 60 is connected to the output port 47 via the corresponding drive circuit 49.
  • the solenoid valve 60 is controlled by an electronic control unit 40.
  • a pressure sensor 61 for detecting the pressure in the air chamber 6 is attached to the upper part 2 of the fuel tank 1.
  • the pressure sensor 61 is connected to the input port 46 via the corresponding AD converter 48.
  • a fuel level gauge 62 for detecting the amount of fuel in the fuel chamber 7 by detecting the position of the separation wall 5 is attached to the upper part of the fuel tank 1.
  • the fuel level gauge 62 is connected to the input port 46 via the corresponding AD converter 48.
  • the configuration other than the above is the same as the configuration of the fuel storage device of the twelfth embodiment. Therefore, description of the configuration other than the above is omitted.
  • the evaporative fuel removal processing is executed in the same manner as in the tenth embodiment until the opening of the cap lid is permitted. Therefore, the description of the fuel vapor elimination process until the opening of the cap lid is permitted is omitted.
  • the supply of fuel into the fuel chamber 7 is executed until the fuel chamber 7 becomes full of fuel.
  • the solenoid valve 60 is opened to reduce the pressure in the air chamber 6 when a predetermined time has elapsed.
  • the predetermined time is the time from when the fuel chamber 7 is detected to be full of fuel to immediately after the supply of fuel into the fuel chamber 7 is stopped.
  • the air pump 35 is formed above the fuel level. It corresponds to the means for releasing gas from the space or the means for raising the level of the fuel level.
  • the level switch 57 or the fuel level gauge 62 detects the level of the fuel level. Means.
  • steps S 1 3 4 2 are excluded except for steps S 1 3 4 2. This corresponds to steps up to 60. Therefore, the description of these steps is omitted.
  • step S1342 it is determined whether or not the count t is smaller than a predetermined count t1 (t ⁇ t1).
  • the predetermined count is the time from when it is detected that the fuel chamber 7 is busy with the fuel until immediately after the supply of the fuel into the fuel chamber 7 is stopped.
  • t is less than t1
  • the flow proceeds to step S1343, where the count is increased by a strong force, and the flow proceeds to step S1344.
  • step S1350 the end flag is set, and the flow proceeds to step S1352.
  • step S1354 the solenoid valve 60 is opened, and the flow proceeds to step S1356.
  • the air pump is operated or the solenoid valve 60 is opened based on the opening of the relief valve, the pressure in the air chamber 6 or the level switch 57.
  • the air pump may be operated based on the position of the separation wall 5, or the solenoid valve 60 may be opened.
  • the fuel storage device includes a fuel tank main body 140 as shown in FIG.
  • the fuel tank body 140 has a generally bowl-shaped It has an upper part 9 1 and a lower part 9 2.
  • the upper part 91 and the lower part 92 are connected to each other at the flange parts 91a, 92a of these parts.
  • a fuel container 94 forming a fuel chamber 93 for storing and storing fuel is accommodated in the fuel tank body 140.
  • the fuel container 94 has a deformable but rigid rectangular upper wall 95, a deformable but rigid rectangular lower wall 96, and a deformable but rigid wall. As shown in FIG. 29, a strip-shaped wall or connecting wall 97 connecting the peripheral portion 95a of the upper wall 95 to the peripheral portion 96a of the lower wall 96 is provided.
  • the upper wall 95 and the lower wall 96 are arranged so that the upper wall 95 and the lower wall 96 bulge or expand outward when the amount of fuel in the fuel container 94 increases. Deform. Due to the deformation of the upper wall 95 and the lower wall 96, the connecting wall 97 is curved inward. Therefore, the capacity of the fuel container 94 increases.
  • the upper wall 95 and the lower wall 96 are so formed that the upper wall 95 and the lower wall 96 expand inward. Deform to. The deformation of the upper wall 95 and the lower wall 96 causes the connecting wall 97 to curve inward. Therefore, the volume of the fuel container 94 decreases.
  • the rigidity of the connecting wall 97 is larger than the rigidity of the upper wall 95 and the lower wall 96.
  • a fuel passage opening 98 is formed at the center of the lower wall 96 of the fuel container 94.
  • the center part of the lower part 92 of the flint tank body 140 is in contact with A tube opening 9 9 is formed.
  • the fuel container 94 is disposed on the fuel tank body 140 such that the fuel passage opening 98 is aligned with the connection pipe opening 99, and is located outside the fuel container 94 and the fuel tank body 14 Inside 0, an air chamber 110 is formed.
  • the fuel level sensor 1 11 for detecting the position or movement of the upper wall 95 of the fuel container 94 for calculating the amount of fuel in the fuel container 94 is an upper part of the fuel tank body 140. 1 Installed on the inner surface.
  • an air passage opening 112 is formed in the upper part 91 of the fuel tank body 140.
  • the volume of the fuel container 94 decreases or increases, the volume of the air chamber 110 increases or decreases. At this time, air flows into or out of the air chamber 110 through the air passage opening 112. Therefore, the fuel container 94 easily deforms.
  • a filter 113 for preventing other substances except air from flowing into the air chamber 110 is inserted into the air passage opening 112.
  • One end of a fuel pipe 114 for introducing fuel into the fuel container 94 and extracting fuel from the fuel container 94 is connected to the fuel passage opening 98 of the fuel container 94 and the fuel tank body 114. It is inserted into the connection pipe opening 99 of the lower part 92 of 0 and connected.
  • the other end of the fuel pipe 114 is connected to the lower end of the fuel supply pipe 115 for supplying fuel to the fuel container 94 and the fuel introduction pipe for introducing fuel from the fuel container 94 to the fuel pump device 117. Connected to one end of 1 17. The other end of the fuel introduction pipe 1 17 is connected to the fuel pump device 1 16.
  • the fuel pump device 116 draws the fuel in the fuel container 94 and supplies the fuel to a fuel injection valve (not shown) of the internal combustion engine.
  • a pump evaporative fuel pipe 1 18 for discharging the evaporative fuel from the fuel pump device 1 i 6 is connected to the fuel pump device 1 16.
  • Pump evaporative fuel pipe 1 The other end of 18 is connected to the oil supply pipe 1 15 adjacent to the upper opening of the lined oil pipe 1 15.
  • a fuel feed pipe 120 for sending the fuel from the fuel pump device 116 to the fuel injection valve is connected to the fuel pump device 116.
  • One end of a fuel vapor pipe 150 for discharging the fuel vapor from the fuel container 94 is connected to an upper wall 95 of the fuel container 94.
  • the other end of the container fuel vapor pipe 150 is connected to a fuel pump device 116.
  • an evaporative fuel pipe shutoff valve or a container sealing valve 149 is provided at one end of the evaporative fuel pipe 150.
  • the evaporative fuel pipe shut-off valve 149 is provided with a float 151, the density of which is lower than the density of the fuel.
  • the opening of the evaporative fuel pipe 150 opened inside the fuel container 94 corresponds to the discharge passage opening in the space above the fuel liquid level, and the evaporative fuel shutoff valve 1449 shuts off the above discharge passage. Corresponding to the shut-off valve.
  • One end of the fuel vapor pipe 121 for discharging the fuel vapor near the upper opening 111 is connected to the fuel supply pipe 115 at the upper opening on the other end side of the pump fuel fuel pipe 118.
  • the other end of the fuel vapor pipe 122 is connected to a charcoal canister 122 for absorbing the fuel vapor and temporarily holding the fuel vapor.
  • Activated carbon 123 for adsorbing the evaporative fuel is placed in the charcoal canister 122.
  • the interior space of the charcoal canister 122 is divided by activated carbon 123. Therefore, an evaporative fuel chamber 124 is formed on one side of the activated carbon 123, and an air chamber 125 is formed on the other side of the active end 123.
  • the other end of the evaporative fuel pipe 1 2 1 is connected to an evaporative fuel chamber 1 2 4 in a charcoal canister 1 2.
  • the evaporative fuel chamber 124 allows the evaporative fuel adsorbed on the activated carbon 123 to be discharged from the charcoal canister 122 to the intake passage 127 of the internal combustion engine.
  • One end of the feed pipe 1 26 is connected.
  • the other end of the canister evaporative fuel pipe 1 2 6 is connected to the surge tank 1 2 8 formed in the intake passage 1 2 7, and the canister evaporative fuel pipe 1 1 6 is opened in the canister evaporative fuel pipe 1 2 6.
  • An evaporative fuel amount control valve 1 29 for closing and closing is provided.
  • the evaporative fuel amount control valve 12 9 is controlled by a control device (not shown).
  • One end of an air pipe 130 for introducing air into the air chamber 125 of the chamber 122 is connected to the air chamber 125.
  • the other end of the air pipe 130 is connected to an air cleaner 13 1 provided in the intake passage 127.
  • the air pipe 130 is provided with a shut-off valve 132 for opening and closing the air pipe 130.
  • the shutoff valves 13 and 2 are controlled by a control device (not shown).
  • a throttle valve 133 for controlling the amount of air supplied to the engine body 180 of the internal combustion engine is provided in the intake passage 127.
  • the fuel vapor control valve 129 is opened.
  • the evaporative fuel amount control valve 12 9 is normally closed. Therefore, when the evaporative fuel amount control valve 12 9 is opened, the negative pressure in the surge tank 1 28 is introduced into the charcoal canister 1 2 2 via the canister evaporative fuel pipe 1 26.
  • the air in the air cleaner 13 1 is introduced into the charcoal canister 122 via the air pipe 130. For this reason, the evaporated fuel in the charcoal canister 122 is introduced into the intake passage 127.
  • the evaporative fuel amount control valve 129 controls the operating state of the internal combustion engine to control the amount of evaporative fuel to be introduced into the intake passage 127 so as to obtain a desired predetermined air-fuel ratio. Is controlled based on the Therefore, the fuel vapor control valve 12 9 should be discharged into the intake passage 127.
  • the shut-off valve 132 corresponds to a means for controlling the amount of evaporative fuel, and the shutoff valve 132 corresponds to a means for controlling the introduction of air into the charcoal canister 122.
  • the evaporated fuel amount control valve 1 29 and the shutoff valve 1 32 2 are closed, and the fuel system is sealed. Then, when a pressure increase in the fuel system toward the atmospheric pressure is detected by a pressure sensor (not shown), it is determined that the fuel system has a leak. Therefore, the evaporated fuel amount control valve 12 9 and the shutoff valve 13 2 correspond to a means for detecting fuel leakage.
  • the fuel pump device 1 16 has a pump chamber 15 3 defined by a housing 15 2.
  • the pump chamber 153 is divided into a pump chamber part 155 and a sub-tank chamber 156 by a pump chamber separation wall 154.
  • the pump chamber separation wall 154 is a vertical wall 154a extending almost vertically downward from the inner surface of the upper wall of the housing 152, and the housing 154 is a housing above the inner surface of the lower wall of the housing 152.
  • a horizontal wall 1 54 b extending horizontally to the inner surface of the side wall 1 52.
  • the one end of the pump evaporative fuel pipe 1 18 for discharging the evaporative fuel from the pump chamber portion 1 55 is connected to the upper wall of the housing 15 2.
  • the opening at one end of the pump evaporative fuel pipe 1 18 opens in the pump chamber section 15 5 adjacent to the upper wall of the housing 15 2.
  • a fuel pump 157 for supplying fuel from the sub-tank chamber 156 to the fuel injector via the fuel feed pipe 120 is arranged in the sub-tank chamber 156. Is placed.
  • a first fuel filter 157 for filtering the fuel drawn into the fuel pump 157 is connected to a lower wall of the fuel pump 157.
  • a pressure regulator 159 for adjusting the pressure of the fuel discharged by the fuel pump 157 is provided in the fuel feed pipe 120 in the sub-tank chamber 156. Is done.
  • the upper end of the fuel return pipe 161 which is used to return a part of the fuel discharged by the fuel pump 157, to the sub-tank chamber 156, is connected to the pressure regulator 1595. .
  • a fuel feed pipe 120 between the pressure regulator 159 and the fuel pump 157 has a second fuel filter for filtering the fuel discharged from the fuel pump 157.
  • Ruta 160 is provided.
  • the lower end 16 2 of the fuel return pipe 16 1 is oriented substantially horizontally, and is tapered so that the diameter of the end 16 2 becomes smaller as the end 16 2 advances toward the opening. ing.
  • the lower end portion 162 is a negative pressure generating housing for generating a negative pressure by returning or recirculating a part of the fuel discharged by the fuel pump 157 into the sub tank chamber 156. Housed in 6 3.
  • the negative pressure generating housing 163 is provided with a fuel discharge pipe 1664 in the form of a trunk, and the fuel discharge pipe 1664 is provided with a fuel discharge pipe as the fuel discharge pipe 1664 advances to its opening. Tapered so that the diameter of 164 becomes larger.
  • the fuel discharge pipe 16 4 is aligned with the lower tip 16 2. Further, the lower end of the fuel vapor pipe 150 is accommodated in the negative pressure generating housing 163.
  • the container evaporative fuel pipe 150 in the sub-tank chamber i56 has a sub-tank chamber negative pressure introduction pipe 165 for introducing a negative pressure into the sub-tank chamber 156.
  • the sub-tank negative pressure introduction pipe 165 opens into the internal space of the sub-fuel chamber 156 in the upper region of the sub-tank i56.
  • the diameter of the auxiliary tank chamber negative pressure introduction pipe 165 is smaller than the diameter of the container evaporative fuel pipe 150.
  • a vertical annular wall 167 extending vertically downward from the horizontal wall 154b of the pump chamber separation wall 154 is disposed on the horizontal wall 154b.
  • the vertical annular wall 167 forms a fuel intake passage 166 for introducing fuel into the auxiliary tank chamber 156.
  • the position of the upper opening of the fuel intake passage 166 is lower than the position of the bottom wall of the fuel introduction pipe 117.
  • a horizontal annular wall 168 extending horizontally from the vertical annular wall 167 toward the fuel discharge pipe 164 is disposed at a lower end of the vertical annular wall 167.
  • the horizontal annular wall 168 forms a fuel passage 169 through which the fuel discharged from the fuel discharge pipe 164 passes.
  • Separation walls 170 having a mesh structure for separating gas from fuel are provided on the vertical annular wall 167 and the pump chamber part 155.
  • the separating wall 170 extends upward from the bottom surface of the horizontal annular wall 168 to the internal space of the fuel intake passage 166. Therefore, the partition wall 170 crosses the fuel passage 169.
  • the partition wall 170 extends through the vertical annular wall 167 to the interior space of the pump chamber part 155.
  • the side surface of the separation wall 170 in the vertical annular wall 167 extends to the inner surface of the vertical annular wall 167.
  • the separating wall 170 therefore divides the fuel intake passage 166 into two parts.
  • the separation wall 1 ⁇ 0 extends beyond the horizontal wall 154b to the interior space of the pump chamber portion 155.
  • the upper end of the separation wall 170 in the pump chamber part 150 is located higher than the opening of the fuel introduction pipe 117.
  • the side surface of the separation wall 170 in the pump chamber part 150 is connected to the inner surface of the cylindrical wall of the housing 152.
  • the bottom end of the separation wall 170 in the pump chamber part 150 is connected to the horizontal wall 154b.
  • the remaining fuel having a predetermined pressure is supplied to the fuel injection valve via the fuel feed pipe 120.
  • the fuel returned to the auxiliary tank chamber 156 via the fuel injection valve return pipe 161 is discharged from the lower end portion 162 to the negative pressure generating housing 163.
  • the bench flow effect of the tapered lower end portion 162 increases the flow velocity of the fuel flowing out from the lower end portion 162.
  • the fuel with the increased flow velocity flows into the fuel passage 169 via the fuel discharge pipe 164.
  • a negative pressure is generated in the negative pressure generation housing 163 when the fuel is discharged from the lower tip portion 162 to the fuel discharge pipe 1664 and the fuel flow rate is increased. Therefore, the fuel return pipe 16 1 and the negative pressure generating housing 16 3 correspond to a means for generating a negative pressure.
  • the negative pressure generated in the negative pressure generating housing 16 3 is introduced into the space above the fuel level in the container 94 through the container evaporative fuel pipe 150, and the container evaporative fuel pipe 150 It is introduced into the space above the fuel level in the sub-tank chamber 156 via the tank negative pressure introduction pipe 165. Therefore, the container evaporative fuel pipe 150 and the auxiliary tank negative pressure introducing pipe 165 correspond to a means or a passage for introducing a negative pressure.
  • the diameter of the container evaporative fuel pipe 150 is larger than the diameter of the auxiliary tank negative pressure introducing pipe 165. Therefore, the negative pressure is preferentially introduced into the fuel container 94, and the gas containing the fuel vapor and the air is discharged from the fuel container 94.
  • the sub-tank negative pressure introduction pipe corresponds to a means for preferentially promoting the release of gas from the fuel container 94.
  • a negative pressure is introduced into the fuel container 94, evaporative fuel and air are released from the fuel container 94 to the negative pressure generating housing 163, and as a result, the level of the fuel level in the fuel container 94 is increased. Is raised to the highest position in the fuel chamber 93. Therefore, the fuel pump 157 corresponds to a means for discharging gas from a space formed above the fuel level or a means for increasing the height of the fuel level.
  • the fuel container 94 remains gas-free as long as the fuel pump 157 is operated. Is done. Further, when the fuel container 94 is maintained in a harmless condition, the top surface of the fuel container 94 indicates the exact amount of fuel in the fuel container 94. Therefore, in the fourteenth embodiment, the amount of fuel in the fuel container 94 can be accurately detected.
  • the fuel vapor shutoff valve 14 9 shuts off the fuel vapor pipe 150 of the container. Therefore, the evaporative fuel shut-off valve 14 9 is connected to the fuel container 94. This corresponds to a means for stopping the introduction of the negative pressure. Further, the evaporated fuel shutoff valve 149 corresponds to a means for preventing fuel from leaking from the fuel container 94.
  • negative pressure is introduced only into the space above the fuel level in the sub tank chamber 156.
  • the fuel vapor and air are released from the space to the negative pressure generating housing 163.
  • the introduced negative pressure increases the fuel level in the sub-tank chamber 156, and from the pump chamber part 155 to the sub-tank chamber 156 via the fuel intake passage 166. Fuel is introduced. Therefore, the height of the fuel level in the sub-tank chamber 156 is maintained at a predetermined height as long as fuel exists in the pump chamber portion 155.
  • the fuel return pipe 16 1 and the negative pressure generating housing 16 3 correspond to a means for preventing fuel from dying.
  • Evaporated fuel and air released from the space above the fuel level in the fuel container 94 and the sub-tank chamber 156 are contained in the fuel in the negative pressure generating housing 163.
  • the fuel containing the evaporated fuel and the air is discharged to the fuel passage 169 through the fuel discharge pipe 164.
  • the fuel discharged into the fuel passage 166 passes through the lower opening of the fuel intake passage 166.
  • the fuel vapor and the air contained in the fuel move upward due to the low density.
  • the fuel vapor and the air are discharged from the sub-tank chamber 156 to the pump chamber part 155 through one of the fuel intake passages 166 divided by the partition wall 170.
  • the fuel intake passage It functions both as a fuel introduction passage for introducing the fuel into the sub-tank chamber 156 and an evaporative fuel discharge passage for discharging the evaporative fuel from the sub-tank chamber 156. Therefore, it is not necessary to provide another fuel vapor discharge passage in addition to the fuel intake passage 166.
  • the fuel intake passage 166 functions as a fuel introduction passage and an evaporative fuel discharge passage, so that the size of the fuel pump device can be reduced.
  • the separating wall 170 corresponds to a means for separating gas from fuel.
  • the fuel passage 169 is directly connected to the fuel intake passage 166, and is substantially perpendicular to the fuel intake passage 166. Therefore, the fuel vapor and the air easily rise and are separated from the fuel. Accordingly, the fuel passage 169 and the fuel intake passage 166 correspond to a means for separating or discharging gas from the fuel.
  • the evaporative fuel discharged into the pump chamber i 55 is introduced into the charcoal canister 122 through the pump evaporative fuel pipe 118.
  • the lower opening of the pump evaporative fuel pipe 1 18 opens into the internal space of the pump chamber section 1 55 adjacent to the upper wall of the housing 1 52. Therefore, the evaporated fuel in the pump chamber part 155 is introduced into the charcoal canister 122 until the fuel amount in the pump chamber part 155 is reduced.
  • the fuel in the sub-tank chamber 156 is heated by the fuel pump 157. Therefore, the temperature of the fuel in sub-tank chamber 156 is higher than the temperature of the fuel in pump chamber i55. If the higher temperature fuel mixes with the lower temperature fuel in the pump chamber portion 155, A large amount of evaporative fuel may be generated. In addition, temporary tank room 1
  • the fuel passage 16 is a fuel intake passage 1.
  • the fuel passage 169 and the fuel intake passage 166 correspond to a means for preventing the outflow of the fuel, a means for preventing the generation of the evaporated fuel, or a means for preventing the exhaustion of the fuel.
  • the fuel in the fuel container 94 is pumped into the pump chamber via the fuel introduction pipe 117. Introduced within 5. A part of the fuel introduced into the pump chamber part 155 through the fuel introduction pipe 117 passes through the separation wall 170. Therefore, the fuel vapor contained in the fuel in the fuel container 94 is separated in the pump chamber part 155.
  • the fuel introduction pipe 117 is arranged at a position lower than the bottom wall of the fuel container 94. Therefore, the fuel in the fuel container 94 is completely introduced into the pump chamber part 155.
  • the upper opening of the fuel intake passage 166 is located at a position lower than the bottom surface of the fuel inlet pipe 117. Therefore, the fuel in the pump chamber part 155 is completely introduced into the sub tank chamber 156. For this reason, even if the amount of fuel in the fuel container 94 becomes small, the fuel in the fuel container 94 will be in a sub-tank due to the height difference between the fuel container 94 and the fuel introduction pipe 117. Introduced into room 156.
  • the fuel level in the pump chamber section 15 5 or the fuel intake passage 16 6 May even reach the lower end.
  • the fuel height exceeds the lowest end of the fuel intake passage 166 and exceeds the lowest position of the uppermost end of the fuel intake passage 166 the secondary tank 1
  • the fuel in 56 flows into the pump chamber part 15 5.
  • the flow of fuel from the auxiliary tank chamber 156 to the pump chamber section 155 may cause generation of fuel vapor in the pump chamber section 155.
  • the first fuel filter 158 The surrounding fuel may run out.
  • the vertical annular wall 167 is relatively large and extends downward from the horizontal wall 154b. This prevents the height of the fuel level from exceeding the lowermost end of the fuel intake passage 166 and exceeding the lowest position of the uppermost end of the fuel intake passage 166. Is prevented. Therefore, the vertical annular wall 167 corresponds to a means for preventing fuel from flowing out or a means for preventing generation of fuel vapor.
  • the effect of preventing the fuel from flowing out depends on the length or size of the fuel intake passage 166 (or the positional relationship between the uppermost end and the lowermost end of the fuel intake passage 166). And the angle of inclination of the fuel level in the fuel intake passage 166 with respect to the horizontal direction. That is, the effect of preventing the fuel from flowing out is obtained irrespective of the position of the fuel intake passage 166. Therefore, the number of selectable fuel intake passages 16 6 increases.
  • the fuel passage is facing downward and is connected to the fuel intake passage. Therefore, the fuel The fuel discharged from the excess passage flows downward in the fuel intake passage. This causes the fuel to stay for a long time below the fuel intake passage.
  • the fuel pump device 116 when the fuel is supplied into the fuel container 94 via the fuel supply pipe 115, the fuel is introduced into the fuel pump device 116 via the fuel introduction pipe 116. .
  • the fuel introduced into the fuel pump device 116 flows into the auxiliary tank room 156. Therefore, the fuel level in the auxiliary tank 156 rises.
  • the internal space of the fuel container 94 communicates directly with the internal space of the sub-tank 156 via the sub-tank negative pressure inlet pipe 165. Therefore, there is a possibility that the fuel vapor and the air flow back to the fuel container 94 through the container fuel pipe 150. In the fifteenth embodiment, the backflow of gas from the sub tank chamber 156 to the fuel container 94 at the time of refueling is prevented.
  • the sub-tank chamber negative pressure introduction pipe 165 is not provided in the container evaporation fuel pipe 150.
  • a sub-tank negative pressure introduction pipe 173 is provided independently of the container evaporative fuel pipe 150.
  • the upper opening of the sub-tank negative pressure introducing pipe 173 opens into the internal space of the sub-tank chamber 156 in the upper region of the sub-tank chamber 156.
  • the lower opening of the sub-tank negative pressure introduction pipe 173 opens into the internal space of the negative pressure generating housing 163.
  • the diameter of the lower opening of the auxiliary tank negative pressure introduction pipe 173 is smaller than the diameter of the container evaporative fuel pipe 150.
  • the configuration other than the above is the same as the configuration of the fuel pump device of the fourteenth embodiment. Therefore, description of the configuration other than the above is omitted.
  • the operation other than the above is the same as the operation of the fuel pump device of the fourteenth embodiment. Therefore, description of the operation other than the above is omitted.
  • a sensor for detecting gas containing evaporated fuel in the space above the fuel level in the fuel chamber may be used instead of the level switch. Further, the shutoff valve is opened or closed based on the amount of gas in the fuel chamber or the volume of the space formed above the fuel level instead of the highest level of the fuel level. The evaporative fuel removal processing may be controlled.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
PCT/JP1998/003885 1998-03-26 1998-08-31 Reservoir a carburant WO1999048718A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AU88882/98A AU737184B2 (en) 1998-03-26 1998-08-31 A fuel reserving device
BR9811369-0A BR9811369A (pt) 1998-03-26 1998-08-31 Dispositivo de reserva de combustìvel
CA002301030A CA2301030C (en) 1998-03-26 1998-08-31 Fuel reservoir

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP10/79554 1998-03-26
JP07955498A JP3438575B2 (ja) 1997-04-30 1998-03-26 燃料貯留装置

Publications (1)

Publication Number Publication Date
WO1999048718A1 true WO1999048718A1 (fr) 1999-09-30

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ID=13693238

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1998/003885 WO1999048718A1 (fr) 1998-03-26 1998-08-31 Reservoir a carburant

Country Status (9)

Country Link
KR (1) KR100372627B1 (pt)
CN (1) CN1272083A (pt)
AU (1) AU737184B2 (pt)
BR (1) BR9811369A (pt)
CA (1) CA2301030C (pt)
ID (1) ID24168A (pt)
RU (1) RU2181326C2 (pt)
TW (1) TW420643B (pt)
WO (1) WO1999048718A1 (pt)

Cited By (2)

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CN100522681C (zh) * 2004-05-13 2009-08-05 因勒纪汽车系统研究公司 燃料系统
WO2011048468A1 (en) * 2009-10-20 2011-04-28 Eaton Corporation Method of packaging a membrane for use in a venting valve

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KR100530418B1 (ko) * 2001-05-04 2005-11-22 현대중공업 주식회사 카고오일 펌프용 자동 하역방법 및 자동 하역장치
DE102008005522A1 (de) * 2008-01-23 2009-07-30 Robert Bosch Gmbh Vorrichtung zur Halterung eines Förderaggregates
NL1036706C2 (nl) * 2009-03-13 2010-09-14 Erik Jeroen Eenkhoorn Opblaasbaar element voor toepassing in het inwendige van een brandstofhouder van een voertuig, vaartuig of vliegtuig.
JP2011079493A (ja) * 2009-10-09 2011-04-21 Toyota Motor Corp 燃料タンク
CN102072210A (zh) * 2010-11-15 2011-05-25 中国船舶重工集团公司第七一○研究所 一种抗涌浪油箱
DE102010055316B4 (de) * 2010-12-21 2016-09-08 Audi Ag Einrichtung zur Entlüftung und Belüftung eines Kraftstofftanks
EP2562023B1 (fr) 2011-08-25 2014-06-18 Inergy Automotive Systems Research (Société Anonyme) Méthode de contrôle de la pression d'un système à carburant de véhicule hybride
CN104081036B (zh) * 2012-02-02 2017-02-22 丰田自动车株式会社 燃料供给装置
JP6311656B2 (ja) * 2015-06-16 2018-04-18 トヨタ自動車株式会社 燃料タンク構造
CN105460118B (zh) * 2015-12-05 2018-08-10 重庆市成吉思机械制造有限公司 摩托车充气防晃油箱
DE102017116881A1 (de) * 2017-07-26 2019-01-31 Kautex Textron Gmbh & Co. Kg Betriebsflüssigkeitsbehälter mit Ausgleichsbehälter zum Ausgleichen von Druckschwankungen im Betriebsflüssigkeitsbehälter

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JPH08170568A (ja) * 1994-10-21 1996-07-02 Toyota Motor Corp 車両用燃料貯留装置
JPH08197969A (ja) * 1995-01-30 1996-08-06 Toyota Motor Corp 車両用燃料貯留装置
JPH09203359A (ja) * 1995-11-20 1997-08-05 Toyota Motor Corp 自動車用燃料貯留装置

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JPH08170568A (ja) * 1994-10-21 1996-07-02 Toyota Motor Corp 車両用燃料貯留装置
JPH08197969A (ja) * 1995-01-30 1996-08-06 Toyota Motor Corp 車両用燃料貯留装置
JPH09203359A (ja) * 1995-11-20 1997-08-05 Toyota Motor Corp 自動車用燃料貯留装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100522681C (zh) * 2004-05-13 2009-08-05 因勒纪汽车系统研究公司 燃料系统
WO2011048468A1 (en) * 2009-10-20 2011-04-28 Eaton Corporation Method of packaging a membrane for use in a venting valve

Also Published As

Publication number Publication date
RU2181326C2 (ru) 2002-04-20
ID24168A (id) 2000-07-13
BR9811369A (pt) 2000-08-22
AU8888298A (en) 1999-10-18
KR20010023220A (ko) 2001-03-26
CA2301030C (en) 2003-08-19
KR100372627B1 (ko) 2003-02-15
CN1272083A (zh) 2000-11-01
CA2301030A1 (en) 1999-09-30
AU737184B2 (en) 2001-08-09
TW420643B (en) 2001-02-01

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