EP2434136B1 - Evaporative fuel control apparatus for internal combustion engine - Google Patents

Evaporative fuel control apparatus for internal combustion engine Download PDF

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Publication number
EP2434136B1
EP2434136B1 EP11175942.9A EP11175942A EP2434136B1 EP 2434136 B1 EP2434136 B1 EP 2434136B1 EP 11175942 A EP11175942 A EP 11175942A EP 2434136 B1 EP2434136 B1 EP 2434136B1
Authority
EP
European Patent Office
Prior art keywords
evaporative fuel
passages
control apparatus
valve body
passage
Prior art date
Legal status (The legal status 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 status listed.)
Not-in-force
Application number
EP11175942.9A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2434136A2 (en
EP2434136A3 (en
Inventor
Junji Shirai
Kuniaki Takahashi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Keihin Corp
Original Assignee
Keihin Corp
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 Keihin Corp filed Critical Keihin Corp
Publication of EP2434136A2 publication Critical patent/EP2434136A2/en
Publication of EP2434136A3 publication Critical patent/EP2434136A3/en
Application granted granted Critical
Publication of EP2434136B1 publication Critical patent/EP2434136B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F02M25/0836—Arrangement of valves controlling the admission of fuel vapour to an engine, e.g. valve being disposed between fuel tank or absorption canister and intake manifold
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
    • F02D9/10—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
    • F02D9/109—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps having two or more flaps
    • F02D9/1095—Rotating on a common axis, e.g. having a common shaft
    • 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
    • F02M25/0872—Details of the fuel vapour pipes or conduits
    • 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
    • F02M25/089—Layout of the fuel vapour installation
    • 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
    • F02M2025/0845—Electromagnetic valves

Definitions

  • the present invention relates to an evaporative fuel control apparatus for an internal combustion engine, which serves to circulate to the internal combustion engine an evaporative fuel, which is evaporated from a fuel in a liquid state, in an internal combustion engine installed in a motor vehicle.
  • an evaporative fuel control apparatus in which an evaporative fuel generated in the fuel tank of a vehicle is adsorbed by a canister, and then the evaporative fuel, which is desorbed from the canister, is purged into the inlet system of an internal combustion engine.
  • a first purge conduit is connected on a downstream side of the canister, and second purge conduits are provided on a downstream side of the first purge conduit so as to be branched in a forked shape.
  • second purge conduits are provided on a downstream side of the first purge conduit so as to be branched in a forked shape.
  • third purge conduits are connected respectively on downstream sides of the second purge conduits so as to be branched in forked shapes, and respective throttle bodies having respective throttle valves are connected respectively to the third purge conduits.
  • the evaporative fuel desorbed from the canister is supplied respectively to the four throttle bodies through the first through third purge conduits, and the evaporative fuel is purged into the internal combustion engine.
  • a bypass flow passage is connected with respect to a surge tank to which intake air is introduced, a downstream side of the bypass flow passage is branched into passages and the passages are connected respectively to an intake manifold, and together therewith, a vapor tank in which fuel is stored and a midway location of the bypass flow passage are connected by a vent passage.
  • a control valve is provided on a downstream side of the connection location where the vent passage is connected, such that upon occurrence of a valve open state in an idle state of the internal combustion engine, intake air is caused to flow through the bypass flow passage and into the intake manifold.
  • US 2009/183500 A1 discloses an evaporative fuel control apparatus for use in an internal combustion engine having intake passages that supply intake air to plural cylinder chambers, and a throttle valve disposed in the intake passages for controlling a flow rate of the intake air, wherein vaporized evaporative fuel is supplied through the intake passages into the cylinder chambers, the evaporative fuel control apparatus comprising: a bypass passage made up from an upstream side passage connected to an upstream side of the throttle valve in the intake passages, and plural downstream side passages, which are connected to downstream sides of the throttle valve in the intake passages; two switching valves connected to the bypass passage, and each having a body, a valve body disposed displaceably inside the body, and a drive unit for displacing the valve body, the switching valves being capable of switching a communication state of the bypass passage by displacement of the valve body; and a single purge passage connected to the switching valve, the evaporative fuel flowing through the purge passage, wherein the purge passage and the bypass passage are connected to
  • purge gas from a single purge passage is distributed into each of cylinders via branch passages.
  • the cylinders may compete with each other to draw the purge gas, resulting in failure in smooth purge gas supply.
  • DE 43 43 654 A1 shows purge switching valves between a fuel tank and an intake passage, formed by spool-type valves, wherein, in both end positions, the gases flow through communication grooves formed within the spool of these valves.
  • a general object of the present invention is to provide an evaporative fuel control apparatus for an internal combustion engine, having a simplified structure, and which is capable of reducing the number of assembly steps and causing combustion of the evaporative fuel reliably and efficiently.
  • the present invention provides an evaporative fuel control apparatus for use in an internal combustion engine in accordance with claim 1.
  • the communication state of the upstream side passage or the purge passage with respect to the downstream side passage in the bypass passage can be switched via the communication section provided on the valve body.
  • the piping structure can be simplified, the number of parts that make up the evaporative fuel control apparatus can be reduced, and assembly efficiency can be improved. Further, under a switching action of the switching valve, because evaporative fuel can be made to flow to the intake passages at a desired timing, the evaporative fuel can be supplied reliably and efficiently to the intake passages to enable combustion of the evaporative fuel in the cylinder chambers.
  • reference numeral 10 indicates an evaporative fuel control apparatus for an internal combustion engine according to an embodiment of the present invention.
  • the internal combustion engine 12 may be installed, for example, in an automobile, or on a two-wheeled motor vehicle.
  • the internal combustion engine 12 includes a main body 16 having a plurality of cylinder chambers 14 in which non-illustrated pistons are accommodated, an intake manifold 18 to which the cylinder chambers 14 are connected and intake air is introduced, a throttle valve 20 disposed in the interior of the intake manifold 18 and which is capable of controlling a flow rate of the intake air, and injectors 22 provided in the intake manifold 18 for injecting fuel.
  • a throttle valve 20 disposed in the interior of the intake manifold 18 and which is capable of controlling a flow rate of the intake air
  • injectors 22 provided in the intake manifold 18 for injecting fuel.
  • the intake manifold 18 includes a plurality of intake passages 24a to 24d through which intake air flows.
  • the throttle valve 20 is disposed so as to be capable of opening and closing for controlling the flow rate of intake air respectively to the intake passages 24a to 24d, which are disposed in parallel.
  • a non-illustrated intake duct is provided on an upstream side of the intake manifold 18, external air being introduced through the intake duct.
  • the throttle valve 20, for example, is a multiple throttle valve on which respective valves 27 are provided corresponding to each of the intake passages 24a to 24d, the valves 27 being connected integrally through a shaft 26.
  • Each of the passage cross sectional areas of the intake passages 24a to 24d is changed as a result of the valves 27 being rotated by a rotary drive source 28 (for example, a stepping motor) disposed on an external portion of the intake manifold 18, thereby controlling the flow rate of intake air.
  • a rotary drive source 28 for example, a stepping motor
  • the injectors 22 are disposed on a downstream side (in the direction of the arrow A) of the throttle valve 20 in the intake manifold 18. Based on a control signal from a non-illustrated control unit, the injectors inject fuel (e.g., gasoline) into the intake passages 24a to 24d, whereby the fuel and the intake air are mixed and supplied to the cylinder chambers 14 of the main body 16 in a mixed condition.
  • the injectors 22 are connected respectively to a fuel tube 30 for injecting fuel that is supplied through the interior of the fuel tube 30.
  • the fuel tube 30 is connected through a fuel conduit 32 to a fuel tank 34 in which the fuel is stored.
  • the fuel is supplied by a fuel pump 36, which is disposed in the interior of the fuel tank 34.
  • the fuel tank 34 is connected to a canister 38 via a fuel conduit 32. Evaporative fuel vaporized inside the fuel tank 34 is adsorbed by the canister 38.
  • the evaporative fuel control apparatus 10 includes a bypass conduit (bypass passage) 40, which interconnects an upstream side and a downstream side in the intake passages 24a to 24d of the intake manifold 18, a switching valve 42 that switches a communication state of the bypass conduit 40, a drive unit 44 that carries out switching of the switching valve 42, and a purge conduit (purge passage) 46, through which evaporative fuel flows that is desorbed from the canister 38 connected to the switching valve 42.
  • a bypass conduit (bypass passage) 40 which interconnects an upstream side and a downstream side in the intake passages 24a to 24d of the intake manifold 18, a switching valve 42 that switches a communication state of the bypass conduit 40, a drive unit 44 that carries out switching of the switching valve 42, and a purge conduit (purge passage) 46, through which evaporative fuel flows that is desorbed from the canister 38 connected to the switching valve 42.
  • the bypass conduit 40 is made up from a first passage (upstream side passage) 48 connected to an upstream side of the throttle valve 20 (in the direction of the arrow B) in the intake passage 24b, and which communicates with a later-described communication chamber 52 of the switching valve 42, and second passages (downstream side passages) 50a to 50d, which are connected respectively at a downstream side of the throttle valve 20 (in the direction of the arrow A) between the communication chamber 52 and each of the intake passages 24a to 24d of the intake manifold 18.
  • a single first passage 48 is connected to one of the plural intake passages 24a to 24d, whereas four second passages 50a to 50d are provided corresponding to the number of intake passages 24a to 24d (four intake passages in this case).
  • the first passage 48 forms an upstream passage, which is connected to an upstream side of the throttle valve 20 (in the direction of the arrow B) in the intake passages 24a to 24d
  • the second passages 50a to 50d form downstream passages, which are connected to a downstream side of the throttle valve 20 (in the direction of the arrow A) in the intake passages 24a to 24d.
  • the switching valve 42 comprises a bottomed cylindrical shaped body 54 with the communication chamber 52 formed therein, and a valve body 56, which is disposed for displacement along the communication chamber 52 of the body 54.
  • the first passage 48 which constitutes part of the bypass conduit 40, is connected to a lower end along the axial direction (the direction of arrows C and D) of the body 54 and communicates with the interior of the body 54.
  • a drive unit 44 is connected to an upper end along the axial direction of the body 54, and serves to block the upper opening of the body 54.
  • a stepping motor (rotary drive source) is used, which is rotationally displaced based on control signals from a non-illustrated control unit, the valve body 56 being screw engaged with respect to a drive shaft 58 disposed in a center portion of the rotary drive source. Additionally, by rotation of the drive shaft 58 under a rotary action of the drive unit 44, the valve body 56 is displaced vertically (in the direction of arrows C and D) along the body 54.
  • the drive shaft 58 is formed, for example, from a metallic material.
  • a plurality of the second passages 50a to 50d are connected to a lower part of the side surface of the body 54 on the side of the first passage 48 (in the direction of the arrow C), communicating respectively with the communication chamber 52 in the interior of the body 54.
  • the second passages 50a to 50d are separated at equal intervals mutually along the circumferential surface of the body 54.
  • the second passages 50a to 50d extend radially outward in directions away from the body 54, and are arranged substantially in the same plane in the axial direction of the body 54.
  • a purge conduit 46 is connected upwardly (in the direction of the arrow D) with respect to the second passages 50a to 50d toward the side of the drive unit 44, the purge conduit 46 communicating with the communication chamber 52 of the body 54.
  • the purge conduit 46 is disposed so as to be connected between the canister 38 and the switching valve 42, and supplies evaporative fuel desorbed from the canister 38 into the switching valve 42.
  • the valve body 56 is formed in a cylindrical columnar shape. An outer circumferential surface of the valve body 56 abuts against the inner wall surface of the body 54, and is guided for displacement along the axial directions (the directions of arrows C and D).
  • a drive shaft 58 by which a driving force of the drive unit 44 is transmitted, is connected to an upper end center portion of the valve body 56, the valve body 56 being urged in upward and downward directions (the directions of arrows C and D) through the drive shaft 58.
  • annular recess 60 is formed on the outer circumferential surface of the valve body 56, the annular recess 60 being recessed in a radial direction roughly in a center portion along the axial direction of the valve body 56.
  • the outer circumferential surface of the valve body 56 also is equipped with a first land 62 provided on an upper portion of the annular recess 60, and a second land 64 provided on a lower portion of the annular recess 60.
  • a space, which is formed between the annular recess 60 and an inner wall surface of the body 54 serves as a communication passage (communication part) through which intake air and evaporative fuel flow.
  • a guide groove 66 is formed along the axial direction (the direction of arrows C and D), and a guide pin 68, which is fixed in the body 54 and projects toward the interior thereof, is inserted through the guide groove 66. More specifically, rotational displacement of the valve body 56 with respect to the body 54 is regulated by insertion of the guide pin 68 through the guide groove 66, such that the valve body 56 is capable of displacement only in the axial directions (the directions of arrows C and D).
  • the guide pin 68 and the guide groove 66 function as a rotational displacement regulating means for regulating rotational displacement of the valve body 56.
  • the evaporative fuel control apparatus 10 for an internal combustion engine 12 is constructed basically as described above. Next, operations and advantages of the evaporative fuel control apparatus 10 shall be described.
  • a fast idol condition immediately after initiation of the internal combustion engine 12, in which the accelerator pedal (not shown) is not operated by the driver, shall be explained.
  • a control signal is output to the switching valve 42 from a non-illustrated control unit, whereby, as shown in FIG. 2A , the valve body 56 of the switching valve 42 moves upwardly, such that the second land 64 becomes positioned above the second passages 50a to 50d of the bypass conduit 40.
  • the first passage 48 and the second passages 50a to 50d of the bypass conduit 40 are placed in communication with each other through the communication chamber 52.
  • intake air which is supplied to the intake passages 24a to 24d of the intake manifold 18, flows through the first passage 48 to the switching valve 42, and further flows via the communication chamber 52 into the second passages 50a to 50d.
  • the intake air flows in each of the intake passages 24a to 24d toward the downstream side (in the direction of the arrow A) of the throttle valve 20, and is supplied to the interior of the cylinder chambers 14 of the main body 16.
  • a control signal is output to the switching valve 42 from the non-illustrated control unit, and the valve body 56 of the switching valve 42 is lowered somewhat (in the direction of the arrow C) from the condition shown in FIG. 2A , such that the second land 64 is positioned to confront the second passages 50a to 50d, and communication between the second passages 50a to 50d and the communication chamber 52 is blocked.
  • the annular recess 60 is arranged to face toward the purge conduit 46, evaporative fuel introduced from the purge conduit 46 does not flow past the annular recess 60 to the first and second passages 48 and 50a to 50d.
  • a control signal is output to the switching valve 42 from the non-illustrated control unit, and the valve body 56 of the switching valve 42 is lowered somewhat further (in the direction of the arrow C) from the state shown in FIG. 2B , such that the annular recess 60 is positioned to face toward both the second passages 50a to 50d of the bypass conduit 40, and the purge conduit 46.
  • a state of communication is established via the communication chamber 52 between the purge conduit 46 and the second passages 50a to 50d, and evaporative fuel is supplied from the purge conduit 46, past the interior of the switching valve 42, and through the second passages 50a to 50d into each of the intake passages 24a to 24d.
  • the evaporative fuel is introduced from the respective intake passages 24a to 24d into the cylinder chambers 14 of the main body 16, and is combusted together with the fuel supplied from the injectors 22.
  • a control signal which is based on the running speed of the vehicle or the rotational speed of the internal combustion engine 12 or the like, is output from a non-illustrated control unit to the switching valve 42 of the evaporative fuel control apparatus 10, and thus, by advancing and retracting movements of the valve body 56 in vertical directions (the directions of arrows C and D), the communication state of the purge conduit 46 and the bypass conduit 40 can be switched respectively by means of a single switching valve 42. Stated otherwise, supply of intake air and supply of evaporative fuel, with respect to each of the intake passages 24a to 24d, can be controlled respectively using a single switching valve 42.
  • the piping structure can be simplified, the number of parts that make up the evaporative fuel control apparatus 10 can be reduced, and assembly efficiency can be improved.
  • the present invention is particularly effective in the case of being used with a multiple throttle valve 20 on which respective valves 27 are provided corresponding to each of the plural intake passages 24a to 24b.
  • the switching valve 42 because evaporative fuel can be made to flow to the respective intake passages 24a to 24d at a desired timing, the evaporative fuel can be supplied reliably and efficiently to the intake passages 24a to 24d to enable combustion of the evaporative fuel inside the cylinder chambers 14.
  • annular recess 60 is disposed on the outer circumferential surface of the valve body 56, whereby the purge conduit 46 and the second passages 50a to 50d in the bypass conduit 40 are placed in communication via the annular recess 60. Owing thereto, exposure of the drive shaft 58 of the drive unit 44 directly to the evaporative fuel is avoided, and deterioration of the drive shaft 58 by the evaporative fuel can be suppressed. As a result, durability of the drive unit 44 is enhanced, enabling operation thereof stably over a long period. In particular, when a shaft is used having screw threads engraved on an outer circumferential surface thereof, as with the drive shaft 58 of the present invention, deterioration of the drive shaft 58 can effectively be suppressed.
  • a valve body 102 may be used having on an outer circumferential surface thereof four grooves 104a to 104d, which extend along the axial direction on the outer circumferential surface, and which are separated at equal intervals in the circumferential direction.
  • the grooves 104a to 104d are formed, for example, with a rectangular shape in cross section, so as to be recessed a predetermined depth from the outer circumferential surface of the valve body 102, and extend downwardly (in the direction of the arrow C) from an upper end portion of the valve body 102.
  • the length of the grooves 104a to 104d is set such that the grooves 104a to 104d are positioned upwardly (in the direction of the arrow D) with respect to the second passages 50a to 50d when the valve body 102 is raised, as shown in FIG. 4A , while in addition, the grooves 104a to 104d are positioned so that lower ends thereof face toward the second passages 50a to 50d when the valve body 102 is lowered, as shown in FIG. 4B (see also FIG. 4C ).
  • valve body 102 in a fast idle condition of the internal combustion engine 12, the valve body 102 is raised under a driving action of the drive unit 44, whereby the first passage 48 and the second passages 50a to 50d constituting the bypass conduit 40 are placed in a state of communication through the communication chamber 52. Owing thereto, intake air supplied to the intake passages 24a to 24d of the intake manifold 18 passes through the bypass conduit 40 and flows to the downstream side of the throttle valve 20, and thereafter, is supplied to the main body 16.
  • the purge conduit 46 communicates with the purge communication chamber 106 provided above the valve body 102, whereby evaporative fuel introduced into the purge communication chamber 106 is guided into the respective grooves 104a to 104d.
  • the valve body 102 is lowered (in the direction of the arrow C) from the state shown in FIG. 4A , and as shown in FIGS. 4B and 4C , the lower ends of the grooves 104a to 104d are positioned to confront respective openings of the second passages 50a to 50d. Consequently, the evaporative fuel from the purge conduit 46 flows past the purge communication chamber 106 and the grooves 104a to 104d, and into the second passages 50a to 50d, and is supplied to each of the intake passages 24a to 24d. In addition, the evaporative fuel is introduced from the respective intake passages 24a to 24d into the cylinder chambers 14 of the main body 16, and is combusted together with the fuel supplied from the injectors 22.
  • the switching valve 100 having the valve body 102 constituted in the foregoing manner, in a case where the valve body 102 is formed, for example, using a mold, the grooves 104a to 104d can easily and simultaneously be formed together with formation of the valve body 102.
  • a first passage (48) of a bypass conduit (40) is connected between an upstream side of an intake passage (24b) and a switching valve (42), and second passages (50a to 50d) interconnect the switching valve (42) and downstream sides of respective intake passages (24a to 24d), whereas a purge conduit (46) to which the evaporative fuel is supplied is connected with respect to the switching valve (42).
  • the switching valve (42) is operated responsive to a driven state of the internal combustion engine (12), thus switching between a communication state between the first passage (48) and the second passages (50a to 50d), and a communication state between the purge conduit (46) and the second passages (50a to 50d), such that intake air or evaporative fuel is made to flow to the intake passages (24a to 24d).

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Supplying Secondary Fuel Or The Like To Fuel, Air Or Fuel-Air Mixtures (AREA)
EP11175942.9A 2010-09-22 2011-07-29 Evaporative fuel control apparatus for internal combustion engine Not-in-force EP2434136B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2010211682A JP5579554B2 (ja) 2010-09-22 2010-09-22 内燃機関の蒸発燃料制御装置

Publications (3)

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EP2434136A2 EP2434136A2 (en) 2012-03-28
EP2434136A3 EP2434136A3 (en) 2014-09-17
EP2434136B1 true EP2434136B1 (en) 2016-04-27

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JP (1) JP5579554B2 (ko)

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WO2016021246A1 (ja) * 2014-08-08 2016-02-11 ヤマハ発動機株式会社 エンジンユニット及び鞍乗型車両
EP3176419B1 (en) * 2014-08-08 2020-01-08 Yamaha Hatsudoki Kabushiki Kaisha Engine unit and saddled vehicle
BR112017002530B1 (pt) * 2014-08-08 2021-12-28 Yamaha Hatsudoki Kabushiki Kaisha Unidade de motor e veículo do tipo sela
JP6869150B2 (ja) * 2017-09-13 2021-05-12 日立Astemo株式会社 過給機付内燃機関の蒸発燃料処理装置
JP2024132580A (ja) * 2023-03-17 2024-10-01 株式会社ミクニ 空気量調整バルブおよび多連スロットル装置

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DE4343654A1 (de) * 1993-12-21 1995-06-22 Bosch Gmbh Robert Verfahren und Anlage zur Tankentlüftung

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JP2830505B2 (ja) * 1991-05-21 1998-12-02 トヨタ自動車株式会社 多気筒内燃機関における蒸発燃料のパージシステム
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JPH10259766A (ja) * 1997-03-18 1998-09-29 Toyota Motor Corp 燃料蒸発ガスのパージ量調整機構
JP2000186653A (ja) * 1998-12-22 2000-07-04 Sanshin Ind Co Ltd エンジン
JP2001027217A (ja) * 1999-07-16 2001-01-30 Cosmo Industry:Kk ストッパー付ナット
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JP2009097342A (ja) * 2007-10-12 2009-05-07 Toyota Motor Corp 内燃機関の制御装置
JP2009167962A (ja) * 2008-01-18 2009-07-30 Toyota Motor Corp 内燃機関の蒸発燃料処理装置

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Publication number Priority date Publication date Assignee Title
DE4343654A1 (de) * 1993-12-21 1995-06-22 Bosch Gmbh Robert Verfahren und Anlage zur Tankentlüftung

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JP5579554B2 (ja) 2014-08-27
EP2434136A2 (en) 2012-03-28
JP2012067645A (ja) 2012-04-05
EP2434136A3 (en) 2014-09-17

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