WO2022113122A1 - Ensemble entrée de carburant - Google Patents

Ensemble entrée de carburant Download PDF

Info

Publication number
WO2022113122A1
WO2022113122A1 PCT/IN2021/051120 IN2021051120W WO2022113122A1 WO 2022113122 A1 WO2022113122 A1 WO 2022113122A1 IN 2021051120 W IN2021051120 W IN 2021051120W WO 2022113122 A1 WO2022113122 A1 WO 2022113122A1
Authority
WO
WIPO (PCT)
Prior art keywords
inlet assembly
fuel inlet
fuel
assembly
fuel tank
Prior art date
Application number
PCT/IN2021/051120
Other languages
English (en)
Inventor
Deepan Thangavel
Ramesh VAIDHEESWARAN
Venkata Manga Raju Karnam
Original Assignee
Tvs Motor Company Limited
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
Application filed by Tvs Motor Company Limited filed Critical Tvs Motor Company Limited
Publication of WO2022113122A1 publication Critical patent/WO2022113122A1/fr

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
    • B60K15/04—Tank inlets
    • 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
    • B60K2015/03523—Arrangements of the venting tube
    • B60K2015/03528—Mounting of venting tubes
    • 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
    • B60K2015/03542—Mounting of the venting means
    • B60K2015/03552—Mounting of the venting means the venting means are integrated into the fuel filler pipe
    • 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
    • B60K15/04—Tank inlets
    • B60K2015/0458—Details of the tank inlet
    • B60K2015/047—Manufacturing of the fuel inlet or connecting elements to fuel inlet, e.g. pipes or venting tubes
    • 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
    • B60K15/04—Tank inlets
    • B60K2015/0458—Details of the tank inlet
    • B60K2015/0496—Details of the tank inlet the fuel inlet being arranged on the top of the fuel tank
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/10—Road Vehicles
    • B60Y2200/12—Motorcycles, Trikes; Quads; Scooters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2410/00—Constructional features of vehicle sub-units
    • B60Y2410/113—Mount clips, snap-fit, e.g. quick fit with elastic members

Definitions

  • the present subject matter relates to a fuel tank assembly. More particularly, the present subject matter relates to a vapor tapping in a fuel inlet assembly from the fuel tank assembly.
  • Fig.l is a side view of a saddle type vehicle as per one embodiment of the present invention.
  • Fig.2 is a top view of a fuel tank assembly as per one embodiment of the present invention.
  • Fig.3 is a perspective view of a fuel inlet assembly as per one embodiment of the present invention.
  • Fig. 3a is an inverted view of a fuel tank cap as per one embodiment of the present invention.
  • Fig.3b is an assembled view of a fuel inlet assembly as per one embodiment of the present invention.
  • Fig.3c is a perspective view of a holding means as per one embodiment of the present invention.
  • Fig.3d is a top and sectional view of a connector as per one embodiment of the present invention.
  • Fig. 4 is a top view of a fuel tank assembly as per one embodiment of the present invention.
  • Fig 4a is a sectional view of the fuel tank assembly as per one embodiment of the present invention.
  • the conventional carburetor fuel systems lack in several major aspects e.g. poor efficiency in terms of fuel consumption and performance of the power unit. Also, majorly responsible for the emission of harmful gases which are the main cause for polluting the environment.
  • an Electronic Fuel Injection System or EFI has been developed as an improvement over the carburetor in order to calibrate and optimize the fuel/air ratio.
  • the electronic fuel injection system or EFI is utilized to better control fuel to air ratios in order to provide better performance, improve combustion efficiency thereby reducing emissions and enhance drivability.
  • the need of precise fuel supply creates a necessity for introduction of Electronic Fuel Injection (EFI) system in existing carburetor vehicles.
  • EFI Electronic Fuel Injection
  • the electronic fuel injection system comprises a fuel tank assembly, a fuel pump that is operatively coupled to the fuel tank assembly that directs fuel into the engine.
  • the Electronic Fuel Injection system utilizes advanced electronic techniques to adjust the air fuel mixture.
  • the conversion of the carburetor to the Electronic Fuel Injection system (EFI) involves different types of electrical and mechanical modifications in the vehicle.
  • the fuel tank assembly should be completely closed to prevent any vapor escape, but as it is evident form the fact that under extreme conditions like heat and cold which affects the pressure inside the fuel tank assembly, there arises a need for venting fuel vapors to limit the positive and negative pressure inside the fuel tank assembly respectively while maintaining less evaporative emission in an environment.
  • the fuel vapors generated inside the fuel storage unit or fuel tank assembly are tapped & directed to a canister through a fuel inlet assembly.
  • the vapors are adsorbed onto an activated carbon inside the canister.
  • the fuel tank assembly comprises of a fuel inlet assembly made up of plastic, for channelizing fuel vapors to a canister.
  • the fuel vapors as generated inside the fuel tank assembly are tapped in a fuel tank cap and channelized to a canister through the fuel inlet assembly having multiple provisions and integrally attached connector.
  • this configuration has its own disadvantage like complex fuel inlet assembly as well as integrally attached connector provided to channelize the fuel vapor from fuel tank assembly to the canister, leading to increased manufacturing time, assembly time, increase process cost etc.
  • a reinforcement member is required for mounting of the fuel inlet assembly to the fuel tank assembly.
  • a sealing member for example, an O ring is typically sandwiched between the fuel inlet assembly and the fuel tank assembly, ensuring sealing in the fuel tank assembly.
  • This configuration raises problem like addition of components, that is, O ring and reinforcement member are required for mounting of the fuel inlet assembly, thereby, increasing the number of parts, less compact design potentially compromising on the fuel tank capacity as well as increase in overall cost of the fuel tank assembly and the vehicle.
  • This configuration also increases assembly time, servicing time of the vehicle. Further, it raises another concern that during servicing time if the O ring is not placed carefully, this may lead to potential leakage from the fuel tank assembly and also may lead to fire hazard in the vehicle.
  • the present subject matter discloses a fuel inlet assembly attached on fuel tank assembly with minimum number of components while ensuring vapor tapping in the fuel tank assembly, ease of serviceability and assembly.
  • a fuel tank assembly comprises of a fuel tank inner portion and a fuel tank outer portion.
  • the fuel tank outer portion includes a fuel tank cap, a fuel inlet assembly.
  • the fuel tank cap is assembled on the fuel inlet assembly and the fuel inlet assembly is integrally attached on the fuel tank outer portion, enabling refueling of fuel in the fuel tank assembly.
  • the fuel tank cap is detachably attached with the fuel inlet assembly with various attachment means like fasteners, ensuring rigid attachment of the fuel tank cap with the fuel inlet assembly.
  • the fuel inlet assembly is designed to be integrally attached with the fuel tank and enable a hybrid mount cum connect joint with the fuel tank cap assembly.
  • the fuel inlet assembly is designed with a circular profile.
  • the fuel inlet assembly is made up of metal.
  • the fuel inlet assembly includes a circumferential wall extended vertically and upwardly in the fuel inlet assembly.
  • the fuel inlet assembly includes a wall formed centrally in the fuel inlet assembly.
  • the wall is extended vertically and upwardly with respect to centre portion of the fuel inlet assembly forming a round opening for detachably attaching the fuel tank cap with the fuel tank assembly.
  • a sealing member is disposed at top portion of the wall, restricting leakage from the fuel tank assembly.
  • the wall is also extended in bottom portion of the fuel inlet assembly forming plurality of projections for locking the fuel tank cap with the fuel tank assembly.
  • the portion formed between the wall configured centrally in the fuel inlet assembly and circumferential wall extended vertically and upwardly in the fuel inlet assembly is termed as ‘receiver portion’.
  • the receiver portion include plurality of mounting means which confirm with a profile of attaching means like fasteners, for detachably attaching fuel tank cap with the fuel inlet assembly.
  • the receiver portion includes an opening for connecting drain hose for draining out excess water, fuel from the fuel tank assembly.
  • the fuel inlet assembly includes a holding means e.g. a bracket and a connector.
  • the holding means that is the bracket is integrally attached to a depressed portion formed in the receiver portion of the fuel inlet assembly.
  • the holding means includes an arm which holds the connector, eliminating wrong assembly of the connector with the holding means.
  • the connector includes a spout portion, where the spout portion is projected through an opening present in the circumferential wall of the fuel inlet assembly. The fuel vapor generated in the fuel tank assembly is channelized to a canister through hose connected with the spout portion of the connector, thereby, ensuring less emission in the air.
  • the vehicle is a saddle type vehicle.
  • the concepts of the present invention may be applied to any of the two wheeled vehicle, three wheeled vehicles and four wheeled vehicles without defeating the spirit of the invention.
  • front and rear refers to front and rear, and left and right directions as seen in a state of being seated on a seat of the saddle type vehicle.
  • a longitudinal axis refers to a front to rear axis relative to the vehicle, while a lateral axis refers to a side to side, or left to right axis relative to the vehicle.
  • phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting.
  • FIG. 1 is a left side view of an exemplary saddle type vehicle having a frame assembly (200), in accordance with an embodiment of present subject matter.
  • the vehicle (100) includes a frame assembly (200) shown schematically with dotted lines, which acts as a skeleton for bearing the loads.
  • Instrument cluster (119) is mounted on handle bar assembly (126).
  • the handle bar assembly (126) is disposed over the head pipe (not shown) and it includes brake levers (not shown).
  • the handle bar assembly (126) is connected to a front wheel (129) by one or more front suspension(s) (130).
  • a front fender (131) is disposed above the front wheel (129) for covering at least a portion of the front wheel (129).
  • a fuel tank (103) is mounted to a main frame (not shown) of the frame assembly (200) and it is disposed in the front portion F of a space of the frame (200).
  • the rear fender (138) is projected outwardly of the vehicle systems and the pillion from mud splash as well as to protect the rear wheel (133) from environmental damage.
  • a power unit (125) is mounted to the lower portion of frame (200). In an embodiment, the power unit (125) is an IC engine.
  • the fuel tank (103) is functionally connected to the power unit (125).
  • a seat (132) is located at the back region of the fuel tank (103) and is extended in a longitudinal direction along the seat frames.
  • Fig. 2 is a top view of a fuel tank assembly as per one embodiment of the present invention.
  • the fuel tank assembly (103) comprises of a fuel tank inner portion (not shown) and a fuel tank outer portion (201).
  • the fuel tank outer portion includes a fuel tank cap (203), a fuel inlet assembly (202).
  • the fuel tank cap (203) is assembled on the fuel inlet assembly (202) and the fuel inlet assembly (202) is integrally attached with the fuel tank outer portion, enabling refueling of fuel in the fuel tank assembly.
  • the fuel tank cap (203) is detachably attached with the fuel inlet assembly with various attachment means like fasteners, ensuring rigid attachment of the fuel tank cap with the fuel inlet assembly.
  • Fig. 3 is a perspective view of the fuel inlet assembly as per one embodiment of the present invention. Further, as per one embodiment of the present invention, the fuel inlet assembly is designed with a circular profile (C).
  • the fuel inlet assembly is made up of metal.
  • the fuel inlet assembly (202) includes plurality of concentric walls (301, 304).
  • the concentric wall A i.e., a circumferential wall (301) is extended vertically and upwardly against gravity in the fuel inlet assembly (202).
  • the fuel inlet assembly (202) includes concentric inner wall B (304) formed centrally in the fuel inlet assembly.
  • the concentric inner wall (304) is centrally disposed in the fuel inlet assembly (202) forming a fuel inlet opening (R) to couple with a fuel tank cap (203), thereby, forming a hybrid mount cum connect joint with a fuel tank cap (203).
  • the wall B is extended vertically and upwardly with respect to centre of the fuel inlet assembly (202) forming a round fuel inlet opening ‘R’ for detachably attaching the fuel tank cap with the fuel tank assembly.
  • a sealing member (307) is disposed at top portion of the wall B (304) which compliments with a profile (318) (as shown in fig. 3a) of the fuel tank cap (203) thereby restricting leakage from the fuel tank assembly,
  • the fuel tank cap includes a breather hole (319) (as shown in fig.
  • the wall (304) is also extended in bottom portion of the fuel inlet assembly forming plurality of projections (306) for locking the fuel tank cap with the fuel tank assembly.
  • This configuration eliminates need of additional components like reinforcement member for mounting fuel inlet assembly to the fuel tank assembly as well as eliminates O ring typically used to restrict leakage from the fuel tank assembly.
  • the configuration as per the present invention also ensures ease of manufacturability, ease of servicing, ease of assembly, restricts leakage from the fuel tank assembly, decreases weight of the vehicle.
  • the projections formed in bottom portion of the fuel inlet assembly enables locking of the fuel tank cap with the fuel tank assembly.
  • a portion formed between the wall A (301) and wall B (304) is termed as ‘receiver portion’, thereby forming an annular cavity AC wherein the cavity being configured with a drain opening (305) and a connector (311) to enable passage of the fuel vapour from a fuel tank cap (203) to a canister.
  • the receiver portion (303) include plurality of mounting means (309a, 309b, 309c) (as shown in fig. 3b) which confirm with a profile of complimentary attaching means like fasteners for detachably attaching fuel tank cap with the fuel inlet assembly.
  • the receiver portion (303) includes an opening (305) for detachably attaching drain hose (313) (as shown in fig. 3b ) for draining out excess water, fuel from the fuel inlet assembly.
  • a stopper means (312) is disposed at the bottom portion of the wall B (304)eliminating interference of fuel nozzle with other components.
  • the fuel inlet assembly includes a holding means e.g. a bracket (310) and a connector (311) (as shown in fig. 3b ).
  • the holding means (310) is integrally attached to a depressed portion (308) formed in the receiver portion (303) of the fuel inlet assembly.
  • the holding means (310) includes a base (315), a vertically inclinedly extended portion (316) and a horizontally extended arm (referred here as ‘arm’) (317) (as shown in fig.
  • the connector (311) is configured in the form of a beam base (314d) with an attaching head portion (314) at one end which is configured with one or more groove or neck portion (314a, 314b) formed in an annular fashion substantially at the mid region of the head portion.
  • the connector (311) is additionally configured with a passage P which opens on one side of the head portion (314) with an opening (314c) wherein the opening (314c) fluidically engages with a breather hole (319) of the fuel tank cap assembly (203).
  • the arm (317) of the holding means (310) is configured with a substantially semicircular profile such that the arm couples with holding neck portion (314a, 314b) (as shown in fig. 3c & 3d) of a head portion (314) of the connector (311).
  • the connector includes a spout portion (314e ) at its other end (as shown in fig. 3d), where the spout portion (314e ) is projected through an opening (302) present in the circumferential wall of the fuel inlet assembly.
  • the fuel vapor generated in the fuel tank assembly is channelized to a canister through hose connected with the spout of the connector, thereby, eliminating any substantial emission of fuel vapour to the air or atmosphere.
  • Fig. 4 is a top view of the fuel tank assembly and Fig 4a is a sectional view of the fuel tank assembly taken along AA’ as per one embodiment of the present invention.
  • the fuel vapor generated inside the fuel tank assembly (103) is channelized to the fuel tank cap (203).
  • the fuel vapor as collected in the fuel tank cap (203) is channelized through breather hole (319) and subsequently to the connector (311) and being routed through the spout portion (314e) to a canister. More precisely, the fuel vapor collected in the fuel tank cap (203) is channelized from the breather hole (319) to an opening (314c) (as shown in fig.
  • vapor is further channelized from the opening of the head portion (314) to the spout portion (314e ) of the connector.
  • a hose is connected to the spout portion which channelizes fuel vapor from the spout portion to a canister, providing fuel vapor in combustion chamber of the power unit at suction stage, thereby, avoiding emission of fuel vapour into the atmosphere.
  • the invention helps in overcoming the problem known in the art & problem of adding components required to attach the fuel inlet assembly with the fuel tank assembly.
  • the fuel inlet assembly (202) is designed to be integrally attached with the fuel tank and enable a hybrid mount cum connect joint with the fuel tank cap assembly (203).
  • the fuel inlet assembly is configured with an integrally attached connector (311) which enables effective channelizing of the fuel vapor to the canister while achieving low overall weight and width of the vehicle.
  • the present invention is additionally cost effective.
  • the embodiments of the present invention describes the potential modifications in the fuel inlet assembly, where the fuel inlet assembly includes a detachably attached connector and a holding means.
  • This facilitates the simple and easy mounting of the fuel inlet assembly and the related components while ensuring vapor tapping, increases the ease of assembly and serviceability of the fuel inlet assembly in the vehicle.
  • Fuel tank cap 202 Fuel inlet assembly 201 : outer portion of fuel tank assembly Fig. 3 307: Sealing Member 306: grooves
  • Drain hose 309a, 309b, 309c profile
  • Holding means 311 Connector

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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)

Abstract

La présente invention concerne un ensemble entrée de carburant (202) pour un ensemble réservoir de carburant (103). L'ensemble réservoir de carburant comprend un bouchon de réservoir de carburant (203). Le bouchon de réservoir de carburant a un trou de reniflard (319). L'ensemble entrée de carburant a une paroi A (301) et une paroi B (304), un élément de scellement étanche (303) étant disposé sur la partie supérieure de la paroi B. Une partie de réception est formée entre la paroi A et la paroi B, la partie de réception ayant une partie enfoncée (308). Un moyen de maintien (310) est fixé d'un seul tenant à la partie enfoncée et un raccord (311) est fixé de manière détachable au moyen de maintien dans un ensemble entrée de carburant garantissant la facilité d'entretien et la facilité d'assemblage.
PCT/IN2021/051120 2020-11-30 2021-11-29 Ensemble entrée de carburant WO2022113122A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN202041052188 2020-11-30
IN202041052188 2020-11-30

Publications (1)

Publication Number Publication Date
WO2022113122A1 true WO2022113122A1 (fr) 2022-06-02

Family

ID=81755686

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IN2021/051120 WO2022113122A1 (fr) 2020-11-30 2021-11-29 Ensemble entrée de carburant

Country Status (1)

Country Link
WO (1) WO2022113122A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6651707B2 (en) * 2001-06-09 2003-11-25 Ti Group Automotive Systems (Fuldabruck) Gmbh Motor-vehicle fuel-tank filler assembly
US6755316B2 (en) * 2000-12-19 2004-06-29 Asteer Co., Ltd. Fuel cap

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6755316B2 (en) * 2000-12-19 2004-06-29 Asteer Co., Ltd. Fuel cap
US6651707B2 (en) * 2001-06-09 2003-11-25 Ti Group Automotive Systems (Fuldabruck) Gmbh Motor-vehicle fuel-tank filler assembly

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