WO2011132562A1 - エンジンの吸気系通路構造 - Google Patents
エンジンの吸気系通路構造 Download PDFInfo
- Publication number
- WO2011132562A1 WO2011132562A1 PCT/JP2011/059048 JP2011059048W WO2011132562A1 WO 2011132562 A1 WO2011132562 A1 WO 2011132562A1 JP 2011059048 W JP2011059048 W JP 2011059048W WO 2011132562 A1 WO2011132562 A1 WO 2011132562A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- intake
- hose
- cylinder head
- air cleaner
- engine
- Prior art date
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M13/00—Crankcase ventilating or breathing
- F01M13/02—Crankcase ventilating or breathing by means of additional source of positive or negative pressure
- F01M13/021—Crankcase ventilating or breathing by means of additional source of positive or negative pressure of negative pressure
- F01M13/022—Crankcase ventilating or breathing by means of additional source of positive or negative pressure of negative pressure using engine inlet suction
- F01M13/025—Crankcase ventilating or breathing by means of additional source of positive or negative pressure of negative pressure using engine inlet suction with an inlet-conduit via an air-filter
Definitions
- the present invention relates to a structure of an intake system passage of an engine in a vehicle such as a motorcycle.
- blow-by gas causes engine oil deterioration, metal corrosion, and air pollution, so it is returned to the intake side, mixed with a new mixture, and burned. In order not to release into the atmosphere.
- a breather case is provided in a cylinder head cover, and blow-by gas is supplied from the breather inlet penetrating the cylinder head cover to an oil separation chamber in the breather case and a breather outlet to the intake system of the engine. It is configured to be introduced.
- a breather hose which connects both is required.
- the breather hose is preferably piped so that the air cleaner is opened higher than the breather chamber so as not to form a valley in the hose routing section.
- the present invention has been made in view of the above circumstances, and an object of the present invention is to provide an intake system passage structure for an engine that realizes appropriate piping while being compact.
- An intake system passage structure of an engine according to the present invention includes a cylinder inclined substantially horizontally toward the front, and is connected to an air cleaner disposed above a crankcase and an intake passage led to the front of the air cleaner.
- An intake system passage structure of an engine comprising a carburetor and an intake pipe that connects the carburetor and an intake port of the cylinder head, and has a breather hose led to the front of the air cleaner and connected to a cylinder head cover.
- the hose is characterized in that it is piped so as to pass above the throttle position sensor in a side view and always descend toward the cylinder head.
- the breather hose is piped substantially linearly in both side view and top view and substantially parallel to the intake passage.
- the secondary air hose connecting the secondary air cut valve and the air cleaner is piped through the lower part of the throttle position sensor in a side view.
- the breather hose piped so as to always descend can return the oil content contained in the blow-by gas to the breather chamber properly and smoothly, effectively reducing oil consumption and preventing deterioration of combustion. Can do.
- the number of hose bending locations can be effectively reduced during piping. In this case, it is possible to separate the housing from the secondary air hose and to achieve a compact size.
- FIG. 1 is a side view showing the overall configuration of a motorcycle according to the present invention.
- FIG. 2 is a perspective view showing a configuration example of a body frame of the motorcycle according to the present invention.
- FIG. 3 is a side view showing a configuration example of a power unit mounted on a vehicle body frame in the motorcycle according to the present invention.
- FIG. 4 is a front view of the power unit in the motorcycle according to the present invention.
- FIG. 5 is a top view of the power unit in the motorcycle according to the present invention.
- FIG. 6 is a perspective view of an essential part of the intake system passage structure in the motorcycle according to the present invention.
- FIG. 7 is a side view of an essential part of the intake system passage structure in the motorcycle according to the present invention.
- FIG. 8 is a top view of the main part of the intake system passage structure in the motorcycle according to the present invention.
- FIG. 1 is a side view of a motorcycle according to the present invention.
- the front of the vehicle is indicated by an arrow Fr
- the rear of the vehicle is indicated by an arrow Rr
- the lateral right side of the vehicle is indicated by an arrow R as necessary.
- the left side is indicated by an arrow L.
- the vehicle 100 is configured by forming a vehicle body skeleton by a plurality of vehicle body frames made of steel or aluminum alloy and mounting various parts on the vehicle body frame.
- FIG. 2 is also referred to as an example of the configuration of the body frame.
- the down tube 101 which is a part of the body frame has a front end coupled to the steering head pipe 102 and extends substantially downward from the steering head pipe 102, and is connected to the under frame 103 near the lower end portion thereof.
- the under frame 103 extends substantially rearward.
- a rear frame 104 composed of a pair of left and right as a part of the vehicle body frame is coupled to the rear side of the down tube 101, and each of them extends generally inclining rearward and upward.
- the steering head pipe 102 rotatably supports the front fork 105, and a handle bar 106 is fixed to the upper end of the front fork 105, and a front wheel 107 is rotatably supported on the lower end side.
- the front wheel 107 is equipped with a brake disc 108 that rotates integrally therewith.
- a bracket 109 for supporting the power unit 10 including the engine 11 is attached to the rear end of the under frame 103, and a swing shaft is provided via a stay 110 provided on the bracket 109.
- a swing type power unit 10 is supported around 111 so as to be swingable in the vertical direction.
- the power unit 10 is a unitization of a transmission assembly 14 that includes a cylinder assembly 12 of an engine 11, a crankcase 13, and a continuously variable transmission using a belt / pulley.
- the rear wheel 112 is rotatably supported by the transmission device 14 on the vehicle rear side.
- the axle side of the rear wheel 112 and the rear frame 104 are connected by a shock absorber 113, and the power unit 10 as a whole functions as a swing arm.
- a seat 114 for a rider to sit on is installed above the power unit 10, and a step board 115 on which the rider seated on the seat 114 places his feet above the underframe 103, It is supported by a step frame 116 (see FIG. 2).
- the step board 115 is formed integrally with a leg frame cover that constitutes the exterior of the vehicle.
- a luggage box 117 formed as a storage space for articles and the like opened and closed by the seat 114.
- the front leg shield 118 covers the front side of the vehicle and is mounted with a winker or the like, and is continuous with the above-described step board 115.
- the rear frame cover 119 covers the lower part of the seat 114 or the rear side of the vehicle, and a winker and a brake lamp are mounted.
- Upper portions of the front wheel 107 and the rear wheel 112 are covered with a front fender 120 and a rear fender 121, respectively.
- an air cleaner 15 is mounted on the upper surface side of the transmission 14 located on the vehicle rear side.
- the air cleaner 15 generally has a deformed box shape, and an air intake pipe 16 extends from the vicinity of the left front part, and an intake hose 17, a carburetor 18 and an intake pipe (intake pipe) 19 are connected sequentially from the front part toward the right side in front of the air cleaner 15. Is done.
- the cylinder assembly 12 is formed by sequentially connecting a cylinder head cover 12A, a cylinder head 12B, and a cylinder 12C.
- the intake pipe 19 communicates with an intake port (intake port) in the cylinder head 12B of the cylinder assembly 12, and is cleaned from the air cleaner 15 to the intake port of the cylinder head 12B through an intake passage constituted by these members. Air is supplied.
- intake port intake port
- the fuel injection apparatus is standingly arranged by the intake pipe 19, and a fuel is injected toward an intake port.
- an exhaust port is formed on the lower surface side of the cylinder assembly 12, and the exhaust pipe extends from the exhaust port to extend rearwardly and is connected to a muffler at the rear of the vehicle.
- the power unit 10 includes the cylinder assembly 12, the crankcase 13, and the transmission device 14 as described above, and these are integrated. With the power unit 10 mounted on the vehicle 100, the cylinder assembly 12, the crankcase 13, and the transmission device 14 are arranged in this order from the vehicle front side.
- the cylinder assembly 12 includes a single-cylinder air-cooled engine, and is arranged so that the cylinder axis is substantially horizontal along the vehicle longitudinal direction.
- an intake passage composed of the intake hose 17, the carburetor 18, and the intake pipe 19 is formed from the air cleaner 15 toward the front side at an appropriate interval above the power unit 10 (cylinder assembly 12).
- the passage is arranged linearly so as to substantially follow the cylinder axis in plan view (FIG. 5).
- the carburetor 18 is connected to the intake pipe 19 in a substantially horizontal state, and the intake pipe 19 is disposed at a substantially central portion in the left-right direction of the cylinder with an appropriate gap above the cylinder head 12B.
- the intake pipe 19 is connected to an intake port on the cylinder head 12B side in such a manner that the front side thereof is bent downward.
- an intake passage (a part) is formed through the carburetor 18, and a throttle valve is supported in the intake passage so as to be rotatable about its rotation axis. It is assumed that the amount of air discharged to the downstream side is controlled by changing the opening of the intake passage according to the rotation angle of the throttle valve.
- a throttle pulley 20 coupled to the rotary shaft of the throttle valve is disposed outside the carburetor 18 (right side in this example).
- a throttle cable is connected to the throttle pulley 20.
- the throttle pulley 20 can be rotationally driven through the throttle cable by operating an accelerator handle or the like provided on the handle bar 106, that is, the throttle valve can be controlled to open and close.
- the throttle pulley 20 is urged in the return direction by the elasticity of the return spring 21 (see FIG. 8 and the like), and automatically returns.
- a throttle position sensor 22 which is a throttle opening detection device is mounted on the outer side of the carburetor 18 opposite to the throttle pulley 20.
- the throttle position sensor 22 may be configured using, for example, a rotary encoder.
- the breather hose 23 connects between the cylinder head cover 12A and the air cleaner 15.
- the breather hose 23 is led to the front of the air cleaner 15 and connected to the cylinder head cover 12A.
- the breather hose 23 when viewed from the left side of the carburetor 18 (see FIG. 7 and the like), the breather hose 23 always passes above the throttle position sensor 22 Piping to descend toward Further, as shown in FIG. 8, it is piped substantially in parallel with an intake passage composed of the intake hose 17, the carburetor 18, and the intake pipe 19 in a plan view.
- a recess 24 is provided at the upper left corner of the top surface of the cylinder head cover 12A, and a connection union 25 is provided on the side wall 24a of the recess 24 so that the breather hose 23 is connected to the union 25 from the left side. I have to.
- a breather chamber is provided on the inner side of the cylinder head cover 12A corresponding to the portion where the connection union 25 is provided.
- the cylinder head cover 12A and the air cleaner 15 are also connected by a secondary air hose 26.
- a secondary air cut valve 27 is disposed in the middle of the secondary air hose 26.
- the secondary air hose 26A that connects between the secondary air cut valve 27 and the air cleaner 15 passes below the throttle position sensor 22 in a side view (see FIG. 7 and the like) on the left side of the carburetor 18 and is concavely curved upward. Piping.
- both the breather hose 23 and the secondary air hose 26 (secondary air hose 26A) are piped on the left side of the carburetor 18, that is, not arranged on the right side where the throttle pulley 20 which is a movable member is arranged.
- the front side of the secondary air hose 26 is connected to a connecting portion 28 provided on the top surface of the cylinder head cover 12A in such a manner as to bend downward from the secondary air cut valve 27.
- a mounting bracket 29 fixed to the upper portion of the carburetor 18 extends substantially forward, and the secondary air cut valve 27 is supported and fixed by the mounting bracket 29.
- the breather hose 23 is piped from the air cleaner 15 so as to always descend toward the cylinder head 12B as described above, whereby oil contained in the blow-by gas is removed from the breather chamber. Therefore, oil consumption can be reduced and combustion deterioration can be effectively prevented.
- piping is performed above the throttle position sensor 22, but the secondary air hose 26, in particular, the secondary air hose 26 ⁇ / b> A is piping below the throttle position sensor 22, so that they can be separated. The space above the throttle position sensor 22 can be used effectively.
- the breather hose 23 is piped so as to be always lowered toward the cylinder head 12B, the breather hose 23 can be piped substantially linearly in both side view and top view, and the number of hose bends can be effectively reduced during the piping. .
- the secondary air hose 26A is piped under the throttle position sensor 22 so that they can be separated from each other due to the mutual relationship with the breather hose 23, and the space below the throttle position sensor 22 is effectively utilized. can do.
- the secondary air hose 26 By fixing the secondary air hose 26 to the cylinder head 12B or the cylinder block, the swinging of the secondary air hose 26 during operation can be suppressed, and contact or interference with peripheral parts can be avoided.
- a sluttle pulley 20 is provided on one side of the carburetor 18 and a breather hose 23 is piped on the other side substantially parallel to the intake passage.
- a breather hose 23 is piped on the other side substantially parallel to the intake passage.
- the width in the left-right direction of the engine can be made compact when viewed from above. Further, by connecting the breather hose 23 above the throttle position sensor 22 and the secondary air hose 26 below, the interference between the hoses can be reduced. It becomes possible to do.
- the power unit 10 By reducing the size of the pipes including the breather hose 23 and the secondary air hose 26, the power unit 10 as a whole can be made compact. In particular, in the swing type power unit 10 as in this example, it swings in the vertical direction. By making the circumference of the pipe compact, troubles due to interference with peripheral members such as the rear frame 104 and the luggage box 117 can be effectively and prevented in advance.
- the present invention is applied to the structure of an intake system passage of an engine in a vehicle such as a motorcycle, and appropriately and smoothly returns oil contained in blow-by gas to the breather chamber by a breather hose piped so as to always descend. It is possible to effectively reduce oil consumption and prevent deterioration of combustion. Moreover, the number of hose bending locations can be effectively reduced during piping. In this case, it is possible to separate the housing from the secondary air hose and to achieve a compact size.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
Description
また、本発明のエンジンの吸気系通路構造において、前記ブリーザホースは側面視及び上面視共に略直線状に、且つ前記吸気通路と実質的に略平行に配管されることを特徴とする。
また、本発明のエンジンの吸気系通路構造において、二次エアカットバルブと前記エアクリーナとの間を接続する二次エアホースは、側面視にて前記スロットルポジションセンサの下方を通って配管されることを特徴とする。
また、本発明のエンジンの吸気系通路構造において、シリンダヘッドカバーの頂面角部に凹部を設け、この凹部において前記ブリーザホースを接続することを特徴とする。
図1は、本発明に係る自動二輪車の側面図である。先ず、図1を用いて、自動二輪車の全体構成について説明する。なお、図1を含め、以下の説明で用いる図においては、必要に応じて車両の前方を矢印Frにより、車両の後方を矢印Rrにより示し、また、車両の側方右側を矢印Rにより、車両の側方左側を矢印Lにより示す。
この場合、スロットルポジションセンサ22の上方を通って配管されるが、二次エアホース26の特に二次エアホース26Aがスロットルポジションセンサ22の下方を通って配管されることで、両者の住み分けを可能とし、スロットルポジションセンサ22よりも上部の空間を有効活用することができる。
更に、ブリーザホース23は常にシリンダヘッド12Bに向って下降するように配管されるため側面視及び上面視共、略直線状に配管でき、配管に際してホース曲げ箇所数を効果的に減少することができる。
更に、スロットルポジションセンサ22の上方にブリーザホース23を、下方に2次エアホース26を配管することで、ホース相互の干渉を低減することができ、この点でも上下方向での幅がコンパクトな配管とすることが可能となる。
例えば、凹部24の接続用ユニオン25に対して左側からブリーザホース23を接続する例を説明したが、ユニオン25の配置に応じて左側以外からも接続可能である。
Claims (4)
- 前方に向って略水平に傾斜させたシリンダを備え、クランクケースの上方に配置されたエアクリーナと、該エアクリーナの前方に導出された吸気通路に接続されたキャブレーターと、該キャブレーターとシリンダヘッドの吸気ポートとを接続する吸気管からなるエンジンの吸気系通路構造であって、
前記エアクリーナの前方に導出されてシリンダヘッドカバーに接続するブリーザホースを有し、このブリーザホースは側面視にてスロットルポジションセンサの上方を通り、常にシリンダヘッドに向って下降するように配管されることを特徴とするエンジンの吸気系通路構造。 - 前記ブリーザホースは側面視及び上面視共に略直線状に、且つ前記吸気通路と実質的に略平行に配管されることを特徴とする請求項1に記載のエンジンの吸気系通路構造。
- 二次エアカットバルブと前記エアクリーナとの間を接続する二次エアホースは、側面視にて前記スロットルポジションセンサの下方を通って配管されることを特徴とする請求項1に記載のエンジンの吸気系通路構造。
- シリンダヘッドカバーの頂面角部に凹部を設け、この凹部において前記ブリーザホースを接続することを特徴とする請求項1に記載のエンジンの吸気系通路構造。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201180017885.0A CN102822457B (zh) | 2010-04-23 | 2011-04-12 | 发动机的进气系统通路构造 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2010-100136 | 2010-04-23 | ||
JP2010100136A JP4670996B1 (ja) | 2010-04-23 | 2010-04-23 | エンジンの吸気系通路構造 |
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WO2011132562A1 true WO2011132562A1 (ja) | 2011-10-27 |
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PCT/JP2011/059048 WO2011132562A1 (ja) | 2010-04-23 | 2011-04-12 | エンジンの吸気系通路構造 |
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JP (1) | JP4670996B1 (ja) |
CN (1) | CN102822457B (ja) |
WO (1) | WO2011132562A1 (ja) |
Families Citing this family (1)
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WO2023188279A1 (ja) * | 2022-03-31 | 2023-10-05 | 本田技研工業株式会社 | 内燃機関の吸気構造 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0650125A (ja) * | 1992-07-31 | 1994-02-22 | Yamaha Motor Co Ltd | 自動二輪車のユニットスイングエンジン |
JPH10121936A (ja) * | 1997-09-25 | 1998-05-12 | Suzuki Motor Corp | ユニットスイング型4サイクルエンジンのブリーザー装置 |
JP2005105979A (ja) * | 2003-09-30 | 2005-04-21 | Honda Motor Co Ltd | 内燃機関のブローバイガス還元構造 |
JP2006057566A (ja) * | 2004-08-23 | 2006-03-02 | Yamaha Motor Co Ltd | 車両 |
JP2007270723A (ja) * | 2006-03-31 | 2007-10-18 | Honda Motor Co Ltd | 内燃機関のブローバイガス換気装置 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3974333B2 (ja) * | 2001-01-19 | 2007-09-12 | 本田技研工業株式会社 | 車両用エアクリーナ構造 |
JP4101662B2 (ja) * | 2003-01-10 | 2008-06-18 | 本田技研工業株式会社 | 小型車両のエンジン用燃料噴射装置の取付構造 |
JP4502737B2 (ja) * | 2003-08-29 | 2010-07-14 | 本田技研工業株式会社 | 内燃機関のブローバイガス換気装置 |
JP2007278240A (ja) * | 2006-04-11 | 2007-10-25 | Honda Motor Co Ltd | 内燃機関のクランクケース |
JP4698623B2 (ja) * | 2007-02-09 | 2011-06-08 | 本田技研工業株式会社 | 内燃機関のブリーザ装置 |
JP5142782B2 (ja) * | 2008-03-27 | 2013-02-13 | 本田技研工業株式会社 | 燃料噴射装置の取付け構造 |
-
2010
- 2010-04-23 JP JP2010100136A patent/JP4670996B1/ja not_active Expired - Fee Related
-
2011
- 2011-04-12 CN CN201180017885.0A patent/CN102822457B/zh not_active Expired - Fee Related
- 2011-04-12 WO PCT/JP2011/059048 patent/WO2011132562A1/ja active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0650125A (ja) * | 1992-07-31 | 1994-02-22 | Yamaha Motor Co Ltd | 自動二輪車のユニットスイングエンジン |
JPH10121936A (ja) * | 1997-09-25 | 1998-05-12 | Suzuki Motor Corp | ユニットスイング型4サイクルエンジンのブリーザー装置 |
JP2005105979A (ja) * | 2003-09-30 | 2005-04-21 | Honda Motor Co Ltd | 内燃機関のブローバイガス還元構造 |
JP2006057566A (ja) * | 2004-08-23 | 2006-03-02 | Yamaha Motor Co Ltd | 車両 |
JP2007270723A (ja) * | 2006-03-31 | 2007-10-18 | Honda Motor Co Ltd | 内燃機関のブローバイガス換気装置 |
Also Published As
Publication number | Publication date |
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CN102822457A (zh) | 2012-12-12 |
CN102822457B (zh) | 2015-08-12 |
JP2011231630A (ja) | 2011-11-17 |
JP4670996B1 (ja) | 2011-04-13 |
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