WO2022101924A1 - Air cleaner assembly - Google Patents
Air cleaner assembly Download PDFInfo
- Publication number
- WO2022101924A1 WO2022101924A1 PCT/IN2021/050313 IN2021050313W WO2022101924A1 WO 2022101924 A1 WO2022101924 A1 WO 2022101924A1 IN 2021050313 W IN2021050313 W IN 2021050313W WO 2022101924 A1 WO2022101924 A1 WO 2022101924A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- air cleaner
- cleaner assembly
- housing
- vehicle
- wall structure
- Prior art date
Links
- 239000002828 fuel tank Substances 0.000 claims abstract description 48
- 239000000446 fuel Substances 0.000 claims description 87
- 238000010926 purge Methods 0.000 claims description 12
- 230000029058 respiratory gaseous exchange Effects 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 9
- 238000005192 partition Methods 0.000 claims description 7
- 230000009467 reduction Effects 0.000 abstract description 6
- 238000002347 injection Methods 0.000 description 11
- 239000007924 injection Substances 0.000 description 11
- 238000002485 combustion reaction Methods 0.000 description 8
- 239000000203 mixture Substances 0.000 description 7
- 238000013461 design Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 230000008859 change Effects 0.000 description 5
- 239000007858 starting material Substances 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 230000002411 adverse Effects 0.000 description 4
- 239000003610 charcoal Substances 0.000 description 4
- 239000006260 foam Substances 0.000 description 4
- 239000000725 suspension Substances 0.000 description 4
- 230000006872 improvement Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000003502 gasoline Substances 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000013022 venting Methods 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
- F02M25/08—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding fuel vapours drawn from engine fuel reservoir
- F02M25/0854—Details of the absorption canister
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/02—Air cleaners
- F02M35/04—Air cleaners specially arranged with respect to engine, to intake system or specially adapted to vehicle; Mounting thereon ; Combinations with other devices
- F02M35/042—Air cleaners specially arranged with respect to engine, to intake system or specially adapted to vehicle; Mounting thereon ; Combinations with other devices combined with other devices, e.g. heaters ; for use other than engine air intake cleaning, e.g. air intake filters arranged in the fuel vapour recovery system
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/16—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines characterised by use in vehicles
- F02M35/162—Motorcycles; All-terrain vehicles, e.g. quads, snowmobiles; Small vehicles, e.g. forklifts
Definitions
- the present subject matter relates to a two wheeled type vehicle. More particularly, the present subject matter relates to the air cleaner assembly of a step through type two wheeled vehicles.
- Step through type two wheeled vehicles are one of the most affordable and popular kind of the vehicle among the world’s population. These kinds of vehicles are mostly powered by two stroke or four stroke engines.
- carburetor type system has been implemented in vehicles for supplying & metering fuel quantity to the engine powering such vehicles. With need to enhance performance, power output & efficiency of same engine as well as reduce emissions, fuel injection system has become popular in step through type vehicles.
- a fuel management system is implemented in vehicles to control the fuel being supplied to the engine at right time & in right quantity.
- the fuel management system of the internal combustion engine has to use the combination of fuel tank along with the fuel pump module to deliver fuel in the engine with the help of the fuel injector.
- the vehicle fuel system is responsible for delivering the right amount of fuel from the fuel tank to the fuel injector, to maintain an appropriate amount of fuel in the engine for the process of internal combustion.
- Fig.l is a side view of a step through type vehicle as per one embodiment of the present invention.
- Fig.2 is a perspective view of a frame of step through type vehicle as per one embodiment of the present invention.
- Fig.3 is a side view of the step through type vehicle with air cleaner assembly as per one embodiment of the present invention.
- Fig. 3a is an assembled view of the air cleaner assembly and fuel tank as per one embodiment of the present invention.
- Fig. 4 is an exploded view of the air cleaner assembly as per one embodiment of the present invention.
- Fig. 4a is a sectional view of the secondary compartment as per one embodiment of the present invention.
- Fig. 4b is an assembled view of the air cleaner assembly showing breathing process as per one embodiment of the present invention.
- Fig. 4c is an assembled view of the air cleaner assembly showing purging process as per one embodiment of the present invention.
- FIG. 5 is a perspective view of the air cleaner assembly as per another 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 engine. Also, it is majorly responsible for the emission of harmful gases which are the main cause for polluting the environment.
- EFI Electronic Fuel Injection
- the electronic fuel injection system comprises a fuel tank, a fuel pump that is operatively coupled to the fuel tank that directs fuel into the engine.
- the Electronic Fuel Injection system utilizes advanced electronic techniques to adjust the air fuel mixture to reduce the evaporative emission in the environment.
- the evaporative fuel recycle systems are designed to store and dispose of the fuel vapors before they can escape into the atmosphere
- a typical system consists of a canister full of charcoal, valves, hoses, vents in the fuel lines and a sealed fuel tank cap. When fuel evaporates inside the fuel tank, the excess vapors are transferred to the canister. They are stored there until they can safely be transferred back to the engine to be burnt with the normal air-fuel mixture.
- the fuel system 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 and fuel tank head space, there arises a need for venting and vacuum pressure relief functions to limit the positive and negative pressure inside the fuel tank respectively.
- venting and vacuum relief functions are performed through valves.
- the step through type vehicles typically have a canister as a component of evaporative fuel recycle system which adsorbs the hydrocarbon vapors from the fuel tank and supplies evaporated fuel to the engine for combustion which is positioned near to engine
- step through type vehicles have an evaporative fuel recycle system which comprises of a canister, roll over valve, purge valve and other connecting elements to connect from engine to fuel tank.
- canister is a small round or rectangular plastic or steel container mounted in the vehicle. It is usually disposed such that it is hidden from view and may be located in a corner of the engine wall structure or inside a side panel.
- the canister is generally filled with activated charcoal. The charcoal acts like a sponge and adsorbs and stores fuel vapors. The vapors are stored in the canister until the engine is started, gets warmed-up and is being driven.
- the purge control valve when open, it allows intake vacuum to siphon the fuel vapors into the engine.
- the canister is connected to the fuel tank via the hoses.
- the evaporative fuel recycle system having canister causes few problems.
- the most common problems with the evaporative fuel recycles system having canister is a faulty purge control, undesirable increase in hose length, pinching of hose pipe, inaccurate orientation of roll over valve, water entry etc.
- the disposition of the canister on the side frame is complex and difficult due to lack of space, also the serviceability and accessibility of the canister gets restricted since one has to remove multiple components for servicing which adversely increase the servicing time. Further, such disposition results in change in design or change in location of neighboring parts in the compact layout, thereby increasing vehicle size, incurring high cost, increase in lead time for change over as well as more variety of parts.
- canister is installed to the frame with rubber cushion; hence it requires an attaching member & additional assembly process which may be troublesome during installation within the limited space & complex fuel piping.
- the canister assembly is installed along with the air cleaner as an integrated part of the air cleaner where it requires a dedicated attaching member which leads to increased assembly time, space constraints etc.
- a canister is installed to the frame with rubber cushion.
- a purge control valve is eliminated and a purge port is provided in the air cleaner assembly with certain compromise.
- This leads to problem of additional attaching member & additional assembly process which may be troublesome during installation within the limited space & complex fuel piping. Also, this leads to elongated length of hoses, which may lead to breakage or pinching of the hoses.
- the present invention provides a solution to the above problems while additionally also meeting the requirements of minimum modifications in vehicle when fuel supply system is changed from a carburetor system to fuel injection system.
- the objective is to be achieved at low cost with ease of manufacturing etc.
- the present invention relates to the electronically controlled fuel injection system and more particularly to the improved mounting of air cleaner assembly where the air cleaner assembly having compartments viz. primary compartment and secondary compartment configured with secondary air cleaner element.
- a frame of the step through type vehicle comprises of a main frame, down frame etc., wherein a horizontal portion of the main frame is provided with an engine mounting bracket to mount the engine thereby ensuring rigid mounting of the engine below the horizontally extending downward portion of the main frame.
- a cylinder head is disposed in front of a crankcase.
- a fuel tank is disposed at a slightly tilted position on the main frame and the air cleaner assembly is disposed on the main frame and superimposed by the fuel tank.
- fuel hose has two ends wherein one end is connected to the fuel tank and another end is connected to a roll over valve (ROV) and the hose is rigidly attached by a hose clip, to avoid any breakage of the hose.
- ROV roll over valve
- another end of roll over valve has a hose termed as ROV hose which is further connected to the air cleaner assembly.
- the air cleaner assembly is divided into two compartments namely primary compartment and secondary compartment, where the primary compartment formed by a primary wall structure and is equipped with clean mixture of fuel vapor and atmospheric air, channelized to further flow through the secondary compartment formed by a secondary wall structure and finally channelized to flow to the engine at intake stage.
- the profile of the primary wall structure conforms with a profile of the secondary wall structure to make air cleaner assembly a close structure.
- the primary compartment and the secondary compartment of the air cleaner assembly are divided by a partition wall.
- the partition wall includes a primary filter element to filter out the atmospheric air before it is received in the secondary wall structure through an air inlet port thereby ensuring supply of clean air in the engine at intake stage.
- the secondary wall structure forming the secondary compartment has two regions viz. An inner region which forms the secondary compartment when the secondary wall structure is assembled and an outer region.
- the outer region of the secondary wall structure has the air inlet port which channelizes the atmospheric air into the inner region of the secondary wall structure.
- the exterior surface of the secondary wall structure referred as the outer region of the air cleaner assembly has at least a relief which facilitates ease of mounting of the air cleaner assembly with the frame of the vehicle.
- a partially enclosed housing having cylindrical shape or substantially circular cross section shaped housing (referred here as “housing”) is integrally attached with the secondary wall structure.
- the housing includes a secondary cleaner element like foam, wet foam, charcoal, carbon, charred wood etc., to adsorb the fuel vapor, thereby achieving ease of accessibility of the secondary cleaner element during service.
- the housing is provided above air inlet port on the outer region of the secondary wall structure.
- the fuel vapor generated inside the fuel tank is channelized from the outlet of the fuel tank to the housing provided on the outer region of the secondary wall structure, passing through the hoses connected to the outlet fuel tank and roll over valve. Further, the channelized fuel vapor is mixed with the atmospheric air present in the secondary compartment and the mixture is channelized to the engine at the intake stage of the engine.
- the mixture of fuel vapor and atmospheric air ensures proper combustion in the engine, and this configuration ensures that the fuel vapors are not getting released in the atmosphere.
- the present invention also achieves reduction in the number of hoses without having any adverse impact on the working or performance of the air cleaner assembly and the engine.
- the housing provided on the outer region of the secondary wall structure is closed by a cover, ensuring that the secondary cleaner element is securely placed inside the housing.
- the outer region of the secondary wall structure also includes plurality of extended mounting means having openings to enable secured attachment of the air cleaner assembly with the frame of the vehicle.
- the housing is provided in the inner region of the secondary wall structure of the air cleaner assembly, where the atmospheric air and the adsorbed fuel vapor is channelized to the primary wall structure of the air cleaner assembly. From primary wall structure of the air cleaner assembly, fresh air and adsorbed fuel vapor is further channelized to the engine at intake stage.
- the vehicle is a step through vehicle.
- the concepts of the present invention may be applied to any of the two wheeled vehicles and three 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.
- present subject matter can also be used in any two- wheeler, but for reference, the present subject matter is explained with respect to the step through type vehicle.
- Fig. 1 is a left side view of an exemplary step through type vehicle, as per one embodiment of present subject matter.
- the vehicle (100) has a mono-tube type frame structure (101), which acts as a skeleton for bearing the loads and is also referred to as backbone frame as (shown in Fig 2).
- Instrument cluster (119) is mounted on handle bar (126).
- the handle bar assembly (126) is pivotally disposed through the head tube where it includes brake levers (113).
- 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 leg shield (112) is provided on the vehicle (100).
- a fuel tank (103) having fuel cap (114) is mounted to a main frame member (101b) (as shown in Fig. 2) of the mono-tube type frame structure (101) and it is disposed in front portion F of a step-through space of the mono-tube type frame structure (101).
- An engine (125) is mounted to the lower portion of the mono-tube type frame (101). In an embodiment, the engine (125) is an IC engine.
- An ignition coil (not shown), responsible for providing suitable voltage to a spark plug to ignite fuel, is mounted with a horn (not shown) on single bracket in the vehicle.
- the fuel tank (103) is functionally connected to the engine (125).
- an electronic purge control valve (not shown) is located inside inner portion of the fuel tank. In another implementation, an electronic purge control valve is located above a secondary air cleaner element (not shown).
- a cylinder axis (C-C’) is inclined upwardly and forwardly towards a front wheel of the vehicle (100).
- a swing arm (134) is swingably connected to the mono-tube type frame structure (101).
- a rear wheel (133) is rotatably supported by the swing arm (134).
- One or more rear suspension(s) (135) is connected the swing arm (134) at an angle, to sustain both the radial and axial forces occurring due to wheel reaction, to the mono-tube type frame structure (101).
- a license plate (105) and reflector (116) are mounted on a rear fender (128) which is disposed above the rear wheel (133), where the license plate and a license plate lamp (not shown) is mounted by a single piece license plate bracket (not labelled).
- a seat assembly (132a, 132b) is disposed at a rear portion (R) of the step-through space.
- the seat assembly (132) includes a rider seat (132a), and a pillion seat (132b).
- the vehicle (100) is provided with the grab rail (109). Further, the seat assembly (132a, 132b) is positioned above the rear wheel (133). The vehicle is supported by a center stand (120) mounted to the frame assembly.
- a tool box (110) is provided on the left side of the vehicle (100).
- a cover member (118) is mounted on in the step through region of the down tube (101c) (as shown in Fig. 2).
- the body side cover member (118) covers at least a portion of the engine (125) & step through region of the down tube (101c).
- the engine (125) includes an air intake system (not shown), where A fuel injector (not shown) is mounted on an intake port of the engine which minimizes the amount of unburnt fuel.
- an electronic fuel injection control system controls the fuel injector without a Temperature Manifold Absolute Pressure (TMAP) sensor, enabling elimination of components and overall cost reduction of the vehicle.
- TMAP Temperature Manifold Absolute Pressure
- a throttle position sensor along with a coupler is disposed at an angle to the ground and located on left hand side of the vehicle, below the air cleaner assembly and above the cylinder head of the engine.
- the engine further includes an exhaust system (not shown), and a starter system (not shown).
- the starter system includes an electric starter mechanism or a mechanical starter mechanism.
- the electrical starter system is powered by an auxiliary power source, for cranking the engine. Power generated by engine is transferred to the rear wheel (133) through a
- the engine (125) comprises a cylinder head (123), a cylinder (124), a crankcase (not shown) and a chain cover (121) in order from the front to the rear direction of an engine assembly (122).
- the cylinder (124) protrudes in a forward direction from the front end portion of the crankcase (503).
- Fig. 2 is a perspective view of a frame structure which is generally of a convex shape, comprising of a main frame portion (101b) extending rearwardly and downwardly from a head tube (101a) of the mono-tube type frame structure (101). Further a down frame portion (101c) of the mono-tube type frame structure (101) extends rearward, along a longitudinal axis (L-L’) of the vehicle (100) from a rear portion of the main frame portion (101b).
- the fuel tank (103) (as shown in Fig. 1) is attached on the main frame portion (101b) through attaching means which includes at least one or more mounting brackets (203).
- the engine (125) (as shown in Fig. 1) is a four-stroke air-cooled engine where the center portion of the engine is supported to the mono-tube type frame structure (101).
- the cover member (118) constitutes a floorboard which is disposed above the down frame portion (101c) using attaching means.
- the attaching means includes two cover frame mounting brackets (201) attached to the down frame portion (101c) of the monotube type frame structure (101) to support the floorboard cover member (118). Both the brackets (201) are placed parallel when viewed from top of the vehicle (100).
- the main frame portion (101b) includes an engine mounting bracket (202) and a pair of cover frame mounting bracket (201) in the vehicle width direction, where the engine is mounted horizontally below the down tube portion (101c).
- Fig. 3 is a side view of the step through type vehicle with an air cleaner assembly as per one embodiment of the present invention.
- the air cleaner assembly (301) is attached to the main frame portion (101b) with different attachment means like one or more mounting brackets etc., and superimposed with respect to the fuel tank (103), when the step through vehicle is viewed from the rider’s seated position.
- the air cleaner assembly (301) is disposed in a substantially ‘U’ shaped channel formed on the forward side of the fuel tank (103) wherein the cavity encompasses the main frame portion (101b).
- the air cleaner assembly is securely disposed inside the cavity thereby being protected from accidental damage, environmental factors and provides good aesthetic appearance of the vehicle.
- a roll over valve (302) having two ends is accommodated in the bottom cavity portion of the fuel tank (103), where one end is attached to the fuel tank (103) and another end is attached to the air cleaner assembly (301) through one or more hoses.
- hose (309) has two ends (as shown in fig. 3a), wherein one end (309a) is connected to a vapor outlet (303) of the fuel tank (103) and another end (309b) is connected to the roll over valve (302).
- the fuel vapor generated in the fuel tank (103) is channelized to the roll over valve (302), from where the roll over valve (302) allows the fuel vapor to vent into the air cleaner assembly (301) through the hose (310), ensuring reduction of number and length of hoses and also, reduction of components for channelizing the fuel vapor and reaching the engine for combustion process while also achieving a compact layout of the fuel tank as well as the vehicle.
- Fig. 4 is an exploded view of the air cleaner assembly as per one embodiment of the present invention.
- the air cleaner assembly (301) includes two compartments, primary compartment (401) and secondary compartment (404), where the primary compartment (401) is formed by primary wall structure (40 lw) and the secondary compartment (404) is formed by secondary wall structure (404w) which are detachably attached to each other with various attachment means like fasteners.
- the primary compartment (401) contains clean mixture of fuel vapor and atmospheric air, channelized through the secondary compartment (404) and finally channelized through outlet port (402) to the engine at intake stage.
- the outer profile of the primary wall structure (40 lw) conforms with an outer profile of the secondary wall structure (404w) to make air cleaner assembly a close structure.
- the primary compartment (401) and the secondary compartment (404) of the air cleaner assembly are divided by a partition wall (403).
- the partition wall includes a primary filter element (not labeled) to filter out the atmospheric air received in the secondary wall structure which is received through an air inlet port (412) shown in Fig 4a thereby ensuring supply of clean air in the engine at intake stage.
- the secondary wall structure (404w) forming the secondary compartment (404) can be described to have two regions, an inner region (405) which forms the secondary compartment when the secondary wall structure (404w) is assembled and outer region (404a) (as shown in fig. 4a).
- the outer region (404a) of the secondary wall structure (404w) has the air inlet port (412) which channelizes the atmospheric air into the inner region (405) of the secondary wall structure (404).
- the exterior surface of the secondary wall structure (404w) referred as the outer region (404a) of the air cleaner assembly (301) has at least a relief (413) which facilitates ease of mounting of the air cleaner assembly (301) with the frame of the vehicle by eliminating any fouling of the air cleaner assembly with the frame during assembly.
- the secondary wall structure (404w) is configured with a partially enclosed housing or substantially circular cross section shaped housing (411) disposed closer to the ROV and is integrally formed with the secondary wall structure (404w).
- the circular cross section shaped housing or partially enclosed housing (411) having cylindrical shape (referred here as housing) is integrally attached on the outer region (404a) of the secondary wall structure (404w).
- the housing (411) in a substantially circular profile has a predetermined diameter D.
- the diameter D is in a predetermined range of 40mm to 60mm.
- Dimension more than or less than D leads to fouling of the housing with surrounding components or bulky design of the air cleaner assembly thereby adversely affecting compact vehicle layout.
- the housing (411) has a length L.
- the length L has a predetermined range of 60 mm to 80mm. Dimension more than or less than L leads to fouling of housing with surrounding components or bulky design of the air cleaner assembly thereby adversely affecting compact vehicle layout.
- the housing (411) includes one or more secondary cleaner element like foam, wet foam, charcoal, carbon, charred wood, etc., to adsorb the fuel vapor thereby addressing evaporative emissions to a large extent.
- the design of the secondary cleaner structure as per the present embodiment enables achieving ease of accessibility of the secondary cleaner element during service even for a compact vehicle layout.
- the housing (411) is provided on a top end of the outer region (404a) of the secondary wall structure (404w).
- the housing (411) is configured above the air inlet port (412) on the outer region (404) of the secondary wall structure (404w).
- the air inlet port (412) is located at the air cleaner assembly such that air opening is formed at top side of secondary wall structure leading to increase in the length of air inlet port.
- the fuel vapor is channelized from the outlet of the fuel tank to the housing (411) provided on the outer region of the secondary wall structure (404w). Further, the channelized fuel vapor is mixed with the atmospheric air present in the secondary compartment and the mixture is channelized to the primary compartment through the partition wall (403) then to the engine at the intake stage of the engine, eliminating release of the fuel vapors in the atmosphere and also, ensuring reduction in the number of hoses without compromising the working or performance of the air cleaner assembly and the engine.
- the fuel vapors adsorbed by the one or more secondary cleaner element (407) in the housing (411) and then channelized to the engine in suction stage therefore the fuel vapor adsorbed in not scattered in the inside region of the secondary compartment (404) of the air cleaner assembly.
- the housing (411) provided on the outer region (404a) of the secondary wall structure (404w) is closed by a cover (408) (as shown on fig. 4), ensuring that the secondary cleaner element is securely placed inside the housing.
- the outer region (404a) of the secondary wall structure (404w) also includes plurality of extended mounting means (414) having openings, which enable secure attachment of the air cleaner assembly with the frame of the vehicle.
- SAI Secondary Air Injection
- SAI Secondary Air Injection
- the cover (408) includes plurality of ports, a breathing port (409) and an atmospheric air port (410) (as shown in fig. 4) and the housing (411) includes a plurality of ports, a purge port (406) and a drain port (406a) (as shown in fig. 4a).
- the atmospheric port (410) channelizes atmospheric air (shown by arrow in fig 4b) to the fuel tank (103) through the housing (411) having secondary cleaner element (407) and through a breathing port (409) (as shown by arrows in fig. 4b), ensuring efficient functioning of the fuel tank.
- the purge port (406) of the housing (411) channelizes fuel vapor adsorbed by the one or more secondary cleaner element (407) to the engine along with atmospheric air drawn from the atmospheric port (410) thereby ensuring efficient combustion in the engine.
- the drain port (406a) is provided to drain out any excess fuel collected which for example enters accidentally inside the housing at the time of vehicle roll over (as shown in fig. 4c).
- the cover (408) has an extended member (408a) (as shown in fig. 4b) which restricts the release of fuel vapor to the atmosphere through atmospheric port., as the extended member (408a) forms a channel to channelize the fuel vapor inside the air cleaner assembly at the intake stage of the engine of the vehicle.
- a circular annular ring (415) is inserted on the extended member (408a) of the cover, while assembling the cover (408) with the housing (411). This ensure safe and secured placement of the secondary air cleaner element (407) in the housing.
- FIG. 5 is a perspective view of secondary wall structure (404w) of the air cleaner assembly as per another embodiment of the present invention.
- the housing (411) is disposed in the inner region of the secondary wall structure (404w) in the air cleaner assembly, ensuring efficiency of the secondary air cleaner element (407).
- the invention helps in overcoming the problem of space constraints, minimizing the use of components, increasing the ease of accessibility and serviceability of the secondary air cleaner element in the air cleaner assembly of the vehicle while maintaining the overall weight and width of the vehicle. Additionally, the present invention addressed all problems of known art in a cost effective manner.
- the embodiments of the present invention describes the potential modifications in the air cleaner assembly, where the air cleaner assembly includes two compartments, primary compartment and secondary compartment, where the secondary compartment includes the secondary cleaner element.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Automatic Cycles, And Cycles In General (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
- Supplying Secondary Fuel Or The Like To Fuel, Air Or Fuel-Air Mixtures (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202180075022.2A CN116457565A (en) | 2020-11-16 | 2021-03-25 | Air cleaner assembly |
MX2023005682A MX2023005682A (en) | 2020-11-16 | 2021-03-25 | Air cleaner assembly. |
CONC2023/0005563A CO2023005563A2 (en) | 2020-11-16 | 2023-04-28 | air filter assembly |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IN202041049873 | 2020-11-16 | ||
IN202041049873 | 2020-11-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022101924A1 true WO2022101924A1 (en) | 2022-05-19 |
Family
ID=81602292
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IN2021/050313 WO2022101924A1 (en) | 2020-11-16 | 2021-03-25 | Air cleaner assembly |
Country Status (4)
Country | Link |
---|---|
CN (1) | CN116457565A (en) |
CO (1) | CO2023005563A2 (en) |
MX (1) | MX2023005682A (en) |
WO (1) | WO2022101924A1 (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5912368A (en) * | 1998-03-30 | 1999-06-15 | Ford Motor Company | Air filter assembly for automotive fuel vapor recovery system |
US20140216424A1 (en) * | 2013-02-04 | 2014-08-07 | Briggs & Stratton Corporation | Evaporative emissions fuel system |
-
2021
- 2021-03-25 WO PCT/IN2021/050313 patent/WO2022101924A1/en active Application Filing
- 2021-03-25 MX MX2023005682A patent/MX2023005682A/en unknown
- 2021-03-25 CN CN202180075022.2A patent/CN116457565A/en active Pending
-
2023
- 2023-04-28 CO CONC2023/0005563A patent/CO2023005563A2/en unknown
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5912368A (en) * | 1998-03-30 | 1999-06-15 | Ford Motor Company | Air filter assembly for automotive fuel vapor recovery system |
US20140216424A1 (en) * | 2013-02-04 | 2014-08-07 | Briggs & Stratton Corporation | Evaporative emissions fuel system |
Also Published As
Publication number | Publication date |
---|---|
CN116457565A (en) | 2023-07-18 |
MX2023005682A (en) | 2023-05-26 |
CO2023005563A2 (en) | 2023-08-09 |
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