WO2020144706A1 - Système d'admission - Google Patents

Système d'admission Download PDF

Info

Publication number
WO2020144706A1
WO2020144706A1 PCT/IN2020/050016 IN2020050016W WO2020144706A1 WO 2020144706 A1 WO2020144706 A1 WO 2020144706A1 IN 2020050016 W IN2020050016 W IN 2020050016W WO 2020144706 A1 WO2020144706 A1 WO 2020144706A1
Authority
WO
WIPO (PCT)
Prior art keywords
end portion
diameter
tubular surface
internal combustion
combustion engine
Prior art date
Application number
PCT/IN2020/050016
Other languages
English (en)
Inventor
Lalit Prakash Gautam
Bhavna Mann
Original Assignee
Hero MotoCorp 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 Hero MotoCorp Limited filed Critical Hero MotoCorp Limited
Publication of WO2020144706A1 publication Critical patent/WO2020144706A1/fr
Priority to CONC2021/0008984A priority Critical patent/CO2021008984A2/es

Links

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
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10091—Air intakes; Induction systems characterised by details of intake ducts: shapes; connections; arrangements
    • F02M35/10144—Connections of intake ducts to each other or to another device
    • 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 invention relates to vehicles and, more particularly, to an intake system of a vehicle
  • Vehicles utilizing a power source, such as an internal combustion engine, to generate power are typically equipped with an intake system to provide air to the power source.
  • the intake system includes an inlet duct that receives air from an air filter, a means for supplying fuel that sprays fuel into the inlet duct, and an inlet port connected to the inlet duct.
  • the intake system receives air from surroundings of the vehicle, and supplies the filtered air or filtered air mixed with sprayed fuel to the inlet port.
  • the inlet port is mounted on the power source, and supplies a mixture of air and fuel to the power source for generation of power.
  • the inlet port and the inlet duct include respective flanges that are connected, to connect the inlet port and the inlet duct.
  • an air intake system of an internal combustion engine comprising: an inlet pipe fluidically coupled to an air filtration system, the inlet pipe comprises: an inner tubular surface having a diameter Dl, an outer tubular surface, a first end portion fluidically coupled to the air filtration system, and a second end portion; and an inlet duct fluidically coupled to the internal combustion engine.
  • the inlet duct comprises: an inner tubular surface having a diameter D2, an outer tubular surface, a first end portion fluidically coupled to the internal combustion engine, a second end portion, and a connecting portion connected to the second end portion.
  • the connecting portion is formed circumferentially along the second end portion at the inner tubular surface of the inlet duct.
  • the inlet system of the present invention enables the vehicle to achieve a greater fuel efficiency, and reduced emission. Further, the inlet system of the present invention enables the vehicle to achieve reduced emission in an economical manner.
  • the connecting portion provides an obstruction less, smooth passage from the air filtration system to the internal combustion engine.
  • the connecting portion comprises: a smaller diameter portion having same diameter as diameter D2, and a larger diameter portion.
  • the smaller diameter portion of the connecting portion is positioned towards the second end portion of the inlet duct, and the larger diameter portion is positioned towards the second end portion of the inlet pipe.
  • the larger diameter portion is smaller than diameter of the outer tubular surface.
  • the smaller diameter portion of the connecting portion has a diameter equal to or greater than the predetermined diameter Dl of the inner tubular surface.
  • the larger diameter portion of the connecting portion has a diameter greater than the predetermined diameter D 1 of the inner tubular surface.
  • the connecting portion of the inlet duct is a chamfer.
  • the connecting portion of the inlet duct is a fillet.
  • the height of the chamfer or fillet of the connecting portion is equal or less than the maximum tolerance allowed for misalignment.
  • a two wheeled vehicle in another aspect of the present invention.
  • the vehicle includes a frame; an internal combustion engine carried by the frame; an air filtration system connected to the internal combustion engine; and an air intake system.
  • the air intake system comprises, an inlet pipe fluidic ally coupled to the air filtration system, the inlet pipe comprises, an inner tubular surface having a diameter Dl, an outer tubular surface, a first end portion fluidically coupled to the air filtration system, and a second end portion; and an inlet duct fluidically coupled to the internal combustion engine, the inlet duct comprises, an inner tubular surface having a diameter D2, an outer tubular surface, a first end portion, a second end portion, and a connecting portion connected to the second end portion.
  • the connecting portion is positioned circumferentially along the second end portion at the inner tubular surface of the inlet duct.
  • the connecting portion of the inlet duct is defined as one of a chamfer and a fillet.
  • the inlet system of the present invention enables the vehicle to achieve a greater fuel efficiency, and reduced emission. Further, the inlet system of the present invention enables the vehicle to achieve reduced emission in an economical manner.
  • Figure 1 illustrates a side view of an exemplary two wheeled vehicle, in accordance with an embodiment of the present invention
  • Figure 2 illustrates a view of a frame of the exemplary two wheeled vehicle, in accordance with an embodiment of the present invention
  • Figure 2A illustrates another view of a portion of the frame of the exemplary two wheeled vehicle, in accordance with an embodiment of the present invention
  • Figure 3 illustrates a sectional view of an intake system of the exemplary two wheeled vehicle, in accordance with an embodiment of the present invention
  • Figure 4 illustrates a sectional view of the intake system of the exemplary two wheeled vehicle, in accordance with an embodiment of the present invention
  • Figure 5 illustrates a schematic view of the intake system of the exemplary two wheeled vehicle, in accordance with an embodiment of the present invention.
  • the present invention provides, an air intake system of an internal combustion engine.
  • the air intake system comprising: an inlet pipe fluidically coupled to an air filtration system, the inlet pipe comprises: an inner tubular surface having a diameter D 1 , an outer tubular surface, a first end portion fluidically coupled to the air filtration system, and a second end portion; and an inlet duct fluidically coupled to the internal combustion engine.
  • the inlet duct comprises: an inner tubular surface having a diameter D2, an outer tubular surface, a first end portion fluidically coupled to the internal combustion engine, a second end portion, and a connecting portion connected to the second end portion.
  • the connecting portion is formed circumferentially along the second end portion at the inner tubular surface of the inlet duct.
  • the connecting portion provides an obstruction less, smooth passage from the air filtration system to the internal combustion engine.
  • the connecting portion comprises: a smaller diameter portion having same diameter as diameter D2, and a larger diameter portion.
  • the smaller diameter portion of the connecting portion is positioned towards the second end portion of the inlet duct, and the larger diameter portion is positioned towards the second end portion of the inlet pipe.
  • the larger diameter portion is smaller than diameter of the outer tubular surface.
  • the smaller diameter portion of the connecting portion has a diameter equal to or greater than the predetermined diameter D1 of the inner tubular surface.
  • the larger diameter portion of the connecting portion has a diameter greater than the predetermined diameter D1 of the inner tubular surface.
  • the connecting portion of the inlet duct is a chamfer.
  • the connecting portion of the inlet duct is a fillet.
  • the height of the chamfer or fillet of the connecting portion is equal or less than the maximum tolerance allowed for misalignment.
  • the air intake system comprises, an inlet pipe fluidic ally coupled to the air filtration system, the inlet pipe comprises, an inner tubular surface having a diameter Dl, an outer tubular surface, a first end portion fluidically coupled to the air filtration system, and a second end portion; and an inlet duct fluidically coupled to the internal combustion engine, the inlet duct comprises, an inner tubular surface having a diameter D2, an outer tubular surface, a first end portion, a second end portion, and a connecting portion connected to the second end portion.
  • the connecting portion is positioned circumferentially along the second end portion at the inner tubular surface of the inlet duct.
  • the connecting portion of the inlet duct is defined as one of a chamfer and a fillet.
  • a vehicle (10) according to an embodiment of the present invention is illustrated.
  • the vehicle (10) referred to herein, embodies a two wheeled motorcycle.
  • the vehicle (10) may embody any other ridden vehicles such as scooters, three-wheeled vehicles, All-Terrain Vehicles (ATV) etc. without limiting the scope of the invention.
  • scooters three-wheeled vehicles
  • ATV All-Terrain Vehicles
  • the vehicle (10) comprises one or more body parts, such as a frame (12), a handle bar (14), a front wheel (16), a rear wheel (20), an engine (22), a headlight
  • the frame (12) supports the engine (22) in middle portion of the vehicle (10).
  • the engine (22) provides necessary power required to drive the rear wheel (20) of the vehicle (10).
  • the engine (22) may provide necessary power to the drive the front wheel (16), or both the front wheel (16) and the rear wheel (20) simultaneously, without limiting the scope of the invention.
  • the rear wheel (20) is linked to the engine (22) through a transmission mechanism (not numbered).
  • the fuel tank (26) provides necessary fuel to the engine (22) to generate power within the vehicle (10).
  • the frame (12) of the vehicle (10) comprises the head pipe (30), a single main frame (32), and a down frame.
  • the single main frame (32) extends downwards and rearwards from a rear portion of the head pipe (30) so as to form a relatively mild slope in side view.
  • the down frame extend downward and rearward in a manner branching into left and right, respectively, so as to form a relatively steep slope in side view.
  • the frame (12) comprises a pair of lower frames.
  • the pair of lower frames may be curved to extend rearwardly from lower ends of the down frame.
  • the frame (12) comprises a pair of middle frames (38).
  • the pair of middle frames (38) extend downward and rearward from a main frame cross bar.
  • the frame (12) comprises a mount bracket coupled to the front side of lower portions of the pair of middle frames (38).
  • a pivot pipe (P) is coupled to a lower portion of the mount bracket in a state of penetrating there through.
  • the frame (12) further comprises a pair of sub frame members.
  • the pair of sub frame members are embodied as a pair of seat frames are disposed rearward of the upper ends of the pair of respective middle frames (38).
  • the frame (12) also supports an intake system (100).
  • the intake system (100) is connected to the engine (22).
  • the frame (12) supports the intake system (100), underneath the single main frame (32).
  • the intake system (100) is also interchangeable referred to as“an air intake system (100),”or“an intake air filtration system (100).”
  • the intake system (300) is supported on a middle portion of the frame (12) of the vehicle (10).
  • the intake system (100) provides filtered air along with sprayed fuel to the power unit, i.e., the internal combustion engine (22), of the vehicle (10).
  • the intake system (100) is adapted to receive air from the surroundings of the vehicle (10), filter the air received, spray fuel in the filtered air and supply the filtered air along with sprayed fuel from a fuel supply unit (22a) to an intake port (not numbered) of the internal combustion engine (22) of the vehicle (10).
  • Figure 3 illustrates a sectional view of the intake system (100).
  • the intake system (100) includes an inlet pipe (102).
  • the inlet pipe (102) is connected to an air filtration system (40) (shown in Figure. 2 and Figure 2A).
  • the inlet pipe (102) is adapted to receive filtered air from the air filtration system (40).
  • the inlet pipe (102) has an elongated tubular profile.
  • the inlet pipe (102) includes an inner tubular surface (104), and an outer tubular surface (104a).
  • the inner tubular surface (104) defines an inner tubular cavity within the inlet pipe (102) along which the air received from the air filtration system (40) flows.
  • the inner tubular cavity defined by the inner tubular surface (104) has a predefined diameter Dl.
  • the inner tubular surface (104) is separated from the outer tubular surface (104a) by the thickness of the inlet pipe (102).
  • the inlet pipe (102) further includes a first end portion (106), and a second end portion (108).
  • the first end portion (106) is disposed longitudinally opposite to the second end portion (108).
  • the inlet pipe (102) further includes a flange portion (HO) having a plurality of holes (not illustrated).
  • the flange portion having a plurality of holes (not illustrated).
  • the fuel supply unit (22a) is also disposed on the inlet pipe (102).
  • the fuel supply unit (22a) is disposed on the outer tubular surface (104a) of the inlet pipe (102), proximate to the second end portion (108).
  • the first end portion (106) is connected to the air filtration system (40).
  • the intake system (100) further includes an inlet duct (202).
  • the inlet duct (202) is connected to the internal combustion engine (22).
  • the inlet duct (202) is connected to an inlet manifold of the internal combustion engine (22).
  • the inlet duct (202) has an elongated tubular profile.
  • elongated tubular profile of the inlet duct (202) corresponds to the elongated tubular profile of the inlet pipe (102).
  • the inlet duct (202) includes an inner tubular surface (204), and an outer tubular surface (204a).
  • the inner tubular surface (204) defines an inner tubular cavity within the inlet duct (202) along with mixture of air received from the inlet pipe (102) flows.
  • the inner tubular cavity defined by the inner tubular surface (204) has a predefined diameter D2.
  • the predefined diameter D2 of the inner tubular surface (204) is greater than or equal to the predefined diameter D 1 of the inner tubular surface (104).
  • the predefined diameter D2 of the inner tubular surface (204) is equal to the predefined diameter D1 of the inner tubular surface (104).
  • the inner tubular surface (204) is separated from the outer tubular surface (204a) by the thickness of the inlet duct (202).
  • the inlet duct (202) further includes a first end portion (206), and a second end portion (208). The first end portion
  • the inlet duct (202) further includes a flange portion (210) having a plurality of holes (not illustrated).
  • the flange portion (210) is disposed at the second end portion (208) of the inlet duct (202).
  • the connecting portion (222) includes a connecting portion (222), or a diverging portion (222).
  • the connecting portion (222) is positioned below the flange portion (210), at the second end portion (208) of the inlet duct (202).
  • the connecting portion (222) stretches between a smaller diameter portion (222a) and a larger diameter portion (222b).
  • the smaller diameter portion (222a) of the connecting portion (222) is positioned towards the second end portion (208) of the inlet duct (202), whereas the larger diameter portion (222b) is positioned towards the second end portion (108) of the inlet pipe (102).
  • the smaller diameter portion (222a) of the connecting portion (222) has a diameter equal to or greater than the predetermined diameter D 1 of the inner tubular surface (104).
  • the smaller diameter portion (222a) of the connecting portion (222) has a diameter equal to the predetermined diameter D1 of the inner tubular surface (104).
  • the larger diameter portion (222b) of the connecting portion (222) has a diameter greater than the predetermined diameter D1 of the inner tubular surface (104).
  • the connecting portion (222) of the inlet duct (202) is embodied as a chamfer.
  • the connecting portion (222) of the inlet duct (202) is embodied as a fillet.
  • the connecting portion (222) of the inlet duct (202) may be embodied as a combination of chamfer and fillet.
  • the flange portion (110) of the inlet pipe (102) is connected to the flange portion (210) of the inlet duct (202) through connecting members (212), such as fasteners.
  • the flange portion ( 110) of the inlet pipe (102) is connected to the flange portion (210) of the inlet duct (202) using some other connection means, such as nuts and bolts, welding etc.
  • the height of the chamfer or the fillet of the connecting portion is equal or less than the maximum tolerance allowed for misalignment.
  • the air filtration system (40) filters the air and supplies the filtered air to the inlet pipe (102).
  • the fuel supply unit (22a) disposed on the outer tubular surface (104a) of the inlet pipe (102), sprays fuel in to the inner tubular cavity defined by the inner tubular surface (104) within the inlet pipe (102). Owning to such supply of fuel into the inlet pipe (102) mixing of fuel with air takes place resulting in formation of a mixture of fuel and air.
  • the inlet duct (202) connected to the inlet pipe (102) receives the mixture of fuel and air. Since there is the connecting portion (222) provided on the second end portion (208) of the inlet duct (202), unrestricted flow of mixture of fuel and air takes place from the inlet pipe (102) to the inlet duct (202).
  • the connecting portion (222) ensures an obstructionless, smooth passage from the air filtration system (40) to the internal combustion engine (22). Further owing to the smaller diameter portion of the connecting portion (222) having a diameter equal to the predetermined diameter D 1 of the inner tubular surface (104), any loss of flow is avoided, as the need for having an inlet duct (202) of bigger diameter is eliminated.
  • the inlet system (100) of the present invention enables the vehicle (10) to achieve a greater fuel efficiency, and reduced emission. Further, the inlet system (100) of the present invention enables the vehicle (10) to achieve reduced emission in an economical manner.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Jet Pumps And Other Pumps (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Abstract

La présente invention concerne un système d'admission d'air (100) d'un moteur à combustion interne (22). Le système d'admission d'air (200) comprend : un tuyau d'entrée (102) couplé fluidiquement à un système de filtration d'air (40), le tuyau d'entrée (102) comprenant : une surface tubulaire interne (104) ayant un diamètre D1, une surface tubulaire externe (104a), une première portion d'extrémité (106) couplée fluidiquement au système de filtration d'air (40) et une deuxième portion d'extrémité (108) ; et un conduit d'entrée (202) couplé fluidiquement au moteur à combustion interne (22), le conduit d'entrée (202) comprenant : une surface tubulaire interne (204) ayant un diamètre D2, une surface tubulaire externe (204a), une première portion d'extrémité (206) couplée fluidiquement au moteur à combustion interne (22), une deuxième portion d'extrémité (208), et une portion de liaison (222) reliée à la deuxième portion d'extrémité (208).
PCT/IN2020/050016 2019-01-07 2020-01-07 Système d'admission WO2020144706A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CONC2021/0008984A CO2021008984A2 (es) 2019-01-07 2021-07-07 Sistema de admisión

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN201911000759 2019-01-07
IN201911000759 2019-01-07

Publications (1)

Publication Number Publication Date
WO2020144706A1 true WO2020144706A1 (fr) 2020-07-16

Family

ID=71521497

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IN2020/050016 WO2020144706A1 (fr) 2019-01-07 2020-01-07 Système d'admission

Country Status (2)

Country Link
CO (1) CO2021008984A2 (fr)
WO (1) WO2020144706A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030075923A1 (en) * 2001-10-24 2003-04-24 Wecosta Air filter, intake duct and assembly consisting of a filter and an intake duct of this kind
US6966292B2 (en) * 2003-10-31 2005-11-22 Ruey-Fa Huang Air intake pipe able to increase intake of air and bendable freely for assembly
EP2289787B1 (fr) * 2009-08-28 2013-10-02 Honda Motor Co., Ltd. Véhicule du type monté à califourchon

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030075923A1 (en) * 2001-10-24 2003-04-24 Wecosta Air filter, intake duct and assembly consisting of a filter and an intake duct of this kind
US6966292B2 (en) * 2003-10-31 2005-11-22 Ruey-Fa Huang Air intake pipe able to increase intake of air and bendable freely for assembly
EP2289787B1 (fr) * 2009-08-28 2013-10-02 Honda Motor Co., Ltd. Véhicule du type monté à califourchon

Also Published As

Publication number Publication date
CO2021008984A2 (es) 2021-08-19

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