WO2007142180A1 - エンジン - Google Patents
エンジン Download PDFInfo
- Publication number
- WO2007142180A1 WO2007142180A1 PCT/JP2007/061275 JP2007061275W WO2007142180A1 WO 2007142180 A1 WO2007142180 A1 WO 2007142180A1 JP 2007061275 W JP2007061275 W JP 2007061275W WO 2007142180 A1 WO2007142180 A1 WO 2007142180A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- insulator
- carburetor
- hole
- engine
- communication
- Prior art date
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
- F02M15/00—Carburettors with heating, cooling or thermal insulating means for combustion-air, fuel, or fuel-air mixture
- F02M15/06—Heat shieldings, e.g. from engine radiations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B75/00—Other engines
- F02B75/02—Engines characterised by their cycles, e.g. six-stroke
- F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
- F02B2075/025—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle two
Definitions
- the present invention relates to an engine, and more particularly, to an improvement in a structure for attaching a carburetor to an engine body.
- the carburetor is attached to the engine body through an insulator.
- each of the engine body, the insulator, and the carburetor has intake holes, and these intake holes are passages for sucking the fuel / air mixture generated by the carburetor into the engine. Installation is performed so that the air intake holes communicate.
- the positional relationship between the engine body and the carburetor is fixedly attached (for example, Patent Document 1), and the position of the throttle lever is also fixed relative to the engine body.
- Patent Document 1 JP-A-2004-360656
- An object of the present invention is to provide an engine capable of changing the position of a throttle lever of a carburetor and increasing the degree of freedom in designing a mounted device when the engine is mounted.
- the engine of the present invention includes an engine body having an intake hole, an insulator, and a carburetor, and is attached to the carburetor force engine body so that each intake hole communicates with the engine body via the insulator.
- a mounting means that can be attached to the engine body at multiple positions rotated around the axis of the intake hole is provided to the engine body, and the carburetor is attached to the engine body at one of the mounting positions. It is characterized by.
- the carburetor can be rotated and attached to the engine body at a plurality of positions. Therefore, it is possible to change the direction in which the throttle lever protrudes from the carburetor, in other words, the direction in which the throttle lever is operated.
- the attachment means is provided so that the insulator is attached to the engine body at a predetermined position, and the insulator and the carburetor can be attached at a plurality of positions rotated about the axis of the intake hole.
- the insulator is provided with a communication hole that communicates with a communication hole provided in the carburetor separately from the intake hole and a communication hole provided in the engine body. It is preferable to provide an annular communication groove for communicating the hole and the communication hole of the insulator.
- the insulator and the carburetor can be rotated and attached to a plurality of positions.
- the carburetor can be rotated and attached to the engine body at a plurality of positions. it can.
- the joint surface between the insulator and the carburetor is connected with the communication hole of the insulator and the communication hole of the carburetor at the time of rotational mounting. Therefore, there is no influence on the communication of each communication hole.
- the insulator and carburetor which are small parts compared to the engine body, need only be installed at multiple positions rotated around the axis of the air intake hole. Is easy.
- the communication hole for example, in a two-stroke engine, a pulse that is a passage provided for the purpose of transmitting the negative pressure of the engine in order to operate a pump that sends fuel to the carburetor.
- a hole is considered.
- a leading air passage which is a passage provided for the purpose of sucking the leading air for scavenging the air-fuel mixture into the engine can be considered.
- the attachment means is provided so that the carburetor is attached to the insulator at a predetermined position, and the insulator and the engine body can be attached at a plurality of positions rotated around the axis of the intake hole.
- the insulator is provided with a communication hole that communicates the communication hole provided in the carburetor and the communication hole provided in the engine body separately from the intake hole, and at the joint surface between the engine body and the insulator. It is preferable to provide an annular communication groove that allows communication between the communication hole of the engine body and the communication hole of the insulator.
- the insulator and the engine main body can be rotated and attached to a plurality of positions.
- the carburetor is rotated and attached to the engine main body at a plurality of positions.
- the joint surface between the insulator and the engine body is provided with an annular communication groove that communicates the communication hole of the insulator and the communication hole of the engine body even during rotational mounting. It does not affect the hole communication.
- the attachment means is provided so that the insulator and the carburetor can be attached at a plurality of positions rotated about the axis of the intake hole, and the insulator and the engine body are connected to the intake hole.
- the insulator is configured so that it can be attached at a plurality of positions rotated around the shaft center, and the insulator has a communication hole that communicates a communication hole provided in the carburetor and a communication hole provided in the engine body separately from the intake hole.
- An annular communication groove that connects the communication hole of the carburetor and the communication hole of the insulator is provided on the joint surface between the engine main body and the carburetor, and the engine main body and the insulator are connected to the engine main body. It is preferable to provide an annular communication groove that connects the communication hole of the insulator and the communication hole of the insulator.
- the insulator, the carburetor, and the engine body can be rotated and attached to a plurality of positions, respectively.
- the carriage is rotated to a plurality of positions with respect to the engine body. Can be attached.
- an attachment means is provided so that the insulator and the carburetor can be rotated and attached at four positions every 90 degrees, and the insulator and the engine body are located at predetermined positions.
- the carburetor can be rotated and attached to the engine body at eight positions every 45 degrees. That is, as compared with the case where the attachment means is provided only on one joint surface, it is possible to easily increase the position where the carburetor can be attached to the engine body.
- annular communication groove for communicating each communication hole is formed on the joint surface between the insulator and the carburetor and the joint surface between the engine body and the insulator, respectively. Also, even if the engine body and the insulator are rotated, the communication of the communication hole will not be affected.
- FIG. 1 is a front view of a two-stroke engine according to a first embodiment of the present invention.
- FIG. 3 is an exploded perspective view of the main part of the engine.
- FIG. 4 is a component diagram of an insulator used in the first embodiment.
- FIG. 5 is a side view of the same engine with the carburetor rotated 90 degrees according to the first embodiment.
- FIG. 6 A side view of the same engine rotated 180 degrees.
- FIG. 8 is a schematic perspective view in which a main part of a two-stroke engine according to a second embodiment of the present invention is disassembled. Figure.
- FIG. 9 is an exploded schematic perspective view of the main part of a two-stroke engine according to a third embodiment of the present invention.
- FIG. 1 is a front view of a two-stroke engine
- FIG. 2 is a side view of the engine
- FIG. 3 is a main part of the engine.
- Fig. 4 is an exploded perspective view
- Fig. 4 is a component diagram of the insulator.
- a two-stroke engine 1 shown in FIGS. 1 to 3 includes an engine main body 2, a spark plug 5 provided at one end of the engine main body 2 in FIG. 1, and a crankshaft rotatably supported by the engine main body 2.
- 6 Fig. 3
- the carburetor 8 attached to the right side of the engine body 2 in Fig. 1 via the insulator 7, and the muffler 9 attached to the left side of the engine body 2 in Fig. 1 Is configured as the main component.
- the engine body 2 includes a cylinder 3 having a plurality of fins, and a crankcase 4 provided on the lower side of the cylinder 3 in FIG.
- the insulator 7 is for preventing the heat of the engine from being transmitted to the carburetor 8.
- the insulator 7 is also composed of a plastic heat plastic material and the like, and the general shape is the peripheral surface 4 of the flat cylindrical body 71.
- the protrusions 72 are formed at the 90 ° equidistant positions, and the flanges 73 are formed at two positions 180 ° on the peripheral surface of the flat cylindrical body 71. That is, the insulator 7 as a whole is point-symmetric.
- the insulator 7 has an intake hole 74 in the center.
- Two pulse holes 75 as communication holes communicating with the pulse holes 33 of the cylinder 3 are provided at two positions outside the intake holes 74 of the insulator 7 so as to pass therethrough.
- the pulse hole 33 of the cylinder 3 and the pulse hole 75 of one of the insulators 7 It is possible to communicate with each other and improve the mounting property.
- One end surface of the insulator 7, that is, the joint surface 76 to be joined to the carburetor 8, includes the above-described two pulse holes 75 around the intake hole 74, centering on the axis of the intake hole 74.
- An annular (circular in this embodiment) communication groove 77 is formed at the position.
- Through holes 78 are formed in the two flange portions 73 of the insulator 7. Through the through hole 78, the bolt 10 is threaded and screwed into the screw hole 34 formed in the cylinder 3, so that the insulator 7 is fixed to the cylinder 3.
- the four protrusions 72 of the insulator 7 are formed with screw holes 79 for mounting the carburetor 8, and the center positions of these screw holes 79 are 90 on a virtual circle concentric with the intake hole 74. It is assumed that the degree is equidistant.
- the carburetor 8 has a general structure, is formed in a substantially block shape, and includes a suction hole 81 formed in the center portion thereof.
- the carburetor 8 is provided with a pulse hole 82 communicating therewith with the pulse hole 75 of the insulator 7.
- a throttle valve 83 comprising a not-shown valve can be rotated via a valve shaft (not shown) at a position opposite to the joint surface (not shown) with the insulator 7. It is installed in.
- a throttle lever 84 is attached to the protruding portion of the valve shaft from the carburetor 8, that is, the upper side of the carburetor 8 in FIG.
- the throttle lever 84 is connected to a device mounted on the engine, for example, a drive unit in a radio-controlled model airplane via an operating mechanism (not shown) such as a wire or a link.
- a through hole 85 is provided at a position 180 degrees across the intake hole 81 of the carburetor 8, that is, at two positions on the diagonal of the screw hole 79 of the insulator 7 (79A and 79C in FIG. 3). Bolts 11 are passed through these through-holes 85 and screwed into screw holes 79 provided in the insulator 7 so that the carburetor 8 is fixed to the insulator 7. Become.
- the reference numerals are 85 A and 85 B as shown in the figure.
- the joint surface of the carburetor 8 to the insulator 7 is formed in a flat shape.
- the carburetor 8 shown in FIGS. 1 and 2 is attached with the through hole 85A corresponding to the screw hole 79A of the insulator 7 and the through hole 85B corresponding to the screw hole 79C of the insulator 7. For this reason, the throttle lever 84 protrudes above the carburetor 8 in FIG. 2 (not shown).
- the attachment means includes a through-hole 78 of the insulator 7, a screw hole 34 of the cylinder 3, a bolt 10 for attaching the insulator 7, and a carburetor provided for attaching the insulator 7 to the cylinder 3.
- the carburetor 8 is provided with a through hole 85, a screw hole 79 of the insulator 7, and a carburetor 8 for mounting the bolt 11.
- Fig. 5 is a side view of the 2-stroke engine 1 installed with the carburetor 8 rotated 90 degrees counterclockwise from the state shown in Fig. 2, and Fig. 6 is a side view of the engine installed with 180 degrees rotated.
- FIG. 7 is a side view of the engine rotated by 270 degrees.
- the mounting method for changing the mounting position of the carburetor 8 with respect to the engine body 2 in this way refers to the operation of the throttle lever 84 for mounting on the mounted device of this embodiment. The point is that the mounting position of the carburetor 8 relative to the engine body 2 can be changed to prevent interference between the mechanism and the mounted device. is there.
- the insulator 7 is attached to a predetermined position with respect to the cylinder 3 of the engine body 2.
- an arbitrary diagonal line in the screw hole 79 of the insulator 7 is used.
- the carburetor 8 can be attached to the insulator 7 at any one of the four positions at 90 degrees by selecting and attaching the above two positions. For example, in FIG. 5, the carburetor 8 is attached by rotating 90 degrees counterclockwise in FIG. 3 from the position shown in FIG.
- the through hole 85A of the carburetor 8 is attached to the screw hole 79B of the insulator 7, and the through hole 85B of the carburetor 8 is attached to the screw hole 79D of the insulator 7.
- the carburetor 8 is attached at the position shown in FIG. 5, and the throttle lever 84 projects to the left side of the carburetor 8 in FIG. 5 (not shown).
- the carburetor 8 can be rotated and attached to the insulator 7 at four positions of every 90 degrees.
- the cab letter 8 can be attached to the engine body 2 by 90 degrees. It can be rotated and mounted at 4 positions per degree.
- the direction in which the throttle lever 84 protrudes from the carburetor 8 in other words, the direction in which the throttle lever 84 is operated can be changed, and interference between the operation mechanism of the throttle lever 84 and the mounted device can be prevented. it can.
- the carburetor 8 is attached to the insulator 7 by rotating around the axis of the intake hole 74, the communication between the intake hole 74 of the insulator 7 and the intake hole 81 of the carburetor 8 is not affected.
- a circular communication groove 77 is provided on the insulator 7 at the joint surface 76 with the carburetor 8, centering on the axial center of the intake hole 74 and including the nozzle hole 75 as a communication hole. Therefore, even when the carburetor 8 is rotated and attached to the insulator 7, the pulse hole 82 of the carburetor 8 can face the communication groove 77. That is, the pulse hole 75 of the insulator 7 and the pulse hole 82 as the communication hole of the carburetor 8 can be communicated with each other via the communication groove 77.
- FIG. 8 shows a second embodiment of the present invention and is an exploded perspective view of a main part of the two-stroke engine 1.
- the same members and the same functional parts as those in the first embodiment are denoted by the same reference numerals, and descriptions thereof are omitted or simplified.
- the insulator 7 is installed at a plurality of positions where the insulator 7 is rotated with respect to the cylinder 3, specifically at four positions.
- the carburetor 8 is attached to a predetermined position of the insulator 7.
- screw holes 35 for attaching the insulator 7 are respectively formed on the joint surface 31 of the cylinder 3 with the insulator 7, and the center positions of these screw holes 35 are concentric with the intake hole 32. It is assumed to be equally spaced 90 degrees on the virtual circle.
- the screw holes 79 of the insulator 7 are provided at two positions facing the through holes 85 of the carburetor 8.
- annular (circular in this embodiment) communication groove is formed around the suction hole 32 around the axis of the suction hole 32 and at a position including the pulse hole 33. 36 is formed.
- the bolt 10 for mounting the insulator 7 passes through the through hole 78 of the insulator 7 and is passed through the screw hole 35 of the cylinder 3, and the bolt 11 for mounting the carburetor 8 passes through the through hole 85 of the carburetor 8. And passed through the screw hole 79 of the insulator 7.
- the insulator 7 can be rotated and attached to the cylinder 3 at four positions every 90 degrees.
- the carburetor 8 can be attached to the engine body 2 at four positions every 90 degrees. Can be rotated to position.
- the cylinder 3 is provided with a circular communication groove 36 centering on the axial center of the intake hole 32 and including the pulse hole 33 on the joint surface 31 with the insulator 7. Even when the insulator 7 is rotated and attached, the pulse hole 75 of the insulator 7 can face the communication groove 36. That is, the pulse hole 33 of the cylinder 3 and the pulse hole 75 of the insulator 7 are communicated through the communication groove 36. Can do.
- FIG. 9 shows a third embodiment of the present invention and is an exploded perspective view of the main part of the two-stroke engine 1.
- the carburetor 8 can be attached to a plurality of positions rotated with respect to the insulator 7, specifically, at four positions, and the insulator 7 is attached to the cylinder 3. It can be attached at multiple positions rotated by, specifically, a predetermined position and two positions where the predetermined position force is also shifted by 45 degrees.
- the joint surface 31 of the cylinder 3 with the insulator 7 is centered on the axis of the intake hole 32 from the screw hole 34 for mounting the insulator 7.
- a screw hole 37 for mounting the insulator 7 is formed at a position rotated 45 degrees counterclockwise.
- the bolt 10 for mounting the insulator 7 passes through the through hole 78 of the insulator 7 and is passed through the screw hole 35 or 37 of the cylinder 3, and the carburetor 8 mounting bolt 11 force Carburettor 8 through hole 85 Is passed through the screw hole 79 of the insulator 7.
- the cab letter 8 can be attached to the insulator 7 by rotating it at four positions every 90 degrees.
- Carburetor 8 can be rotated and installed in four positions at 90 ° intervals on insulator 7 when it is installed with screw holes 37 rotated by 45 degrees. As a result, carburetor 8 is 45 It can be installed at 8 positions per degree.
- the mounting position of the carburetor 8 with respect to the engine body 2 can be easily increased as compared with the first embodiment or the second embodiment.
- the cylinder 3 is provided with a communication groove 36 at the joint surface 31 with the insulator 7. Therefore, similarly to the second embodiment, even when the insulator 7 is rotated and attached to the cylinder 3, the pulse hole 33 of the cylinder 3 and the pulse hole 75 of the insulator 7 are communicated with each other. It is possible to communicate through the groove 36.
- the attachment means may be any means that can attach the carburetor 8 to the engine body 2 via the insulator 7 at a plurality of positions.
- the number of attachment positions, the installation location, and the specific configuration (bolts, through holes) , Screw holes, etc.) are not limited.
- the installation location is one or both of the joint surface between the engine body 2 and the insulator 7 and the joint surface between the insulator 7 and the carburetor 8. As long as it can be installed on these joint surfaces, the engine body 2 and the carburetor can be installed in multiple locations.
- the carburetor 8 is attached to the engine body 2 at four positions every 90 degrees in the first embodiment and the second embodiment, and 45 degrees in the third embodiment.
- Designed for engine-equipped equipment for example, radio-controlled model airplanes, which can be used at 8 locations for every 3 degrees at every 120 degrees, or at 6 positions every 60 degrees, and at other angles.
- the number of attachment means can be arbitrarily increased or decreased according to the conditions.
- the force that increases or decreases the number of mounting positions depending on the number of screw holes 79, screw holes 35, and screw holes 37 in the first to third embodiments can be increased or decreased.
- the communication grooves 36 and 79 are formed on both surfaces of the joint surface 31 of the cylinder 3 and the force formed on the joint surface 76 of the insulator 7 or on both surfaces. You may do it. In short, even when the carburetor 8 is rotationally mounted, it is only necessary that the pulse holes 33, 75, 82 as the communication holes of the cylinder 3, the insulator 7, and the carburetor 8 can be communicated with each other.
- the communication hole was constituted by a pulse hole, but as described above, the leading air passage In short, any hole may be used as long as it communicates with the cylinder 3, the insulator 7, and the carburetor 8.
- attachment means so that the insulator 7 and the carburetor 8 can be rotated and attached at four positions every 90 degrees, and the insulator 7 and the cylinder 3 are provided.
- the mounting means is provided so that it can be rotated and mounted at a predetermined position and at a position shifted by 45 degrees in the rotational direction of this predetermined position force carburetor 8, but in other words, in other words, cylinder 3,
- a mounting means is provided so that the insulator 7 can be rotated and rotated at four positions every 90 degrees, and the carburetor 8 and the insulator 7 are placed in a predetermined position, and this predetermined position force is also in the rotation direction of the carburetor 8.
- the communication grooves 36 and 77 are provided in a circular shape, the communication grooves 36 and 77 may be square or the like. .
- the present invention can be suitably used as an engine capable of changing the position of the throttle lever of the carburetor when the engine is mounted, and is particularly effective as an engine for hobby.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/303,549 US8104446B2 (en) | 2006-06-06 | 2007-06-04 | Engine with carburetor mounted on an insulator |
DE112007001326T DE112007001326T5 (de) | 2006-06-06 | 2007-06-04 | Motor |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006-157772 | 2006-06-06 | ||
JP2006157772A JP2007327372A (ja) | 2006-06-06 | 2006-06-06 | エンジン |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2007142180A1 true WO2007142180A1 (ja) | 2007-12-13 |
Family
ID=38801431
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2007/061275 WO2007142180A1 (ja) | 2006-06-06 | 2007-06-04 | エンジン |
Country Status (6)
Country | Link |
---|---|
US (1) | US8104446B2 (ja) |
JP (1) | JP2007327372A (ja) |
CN (1) | CN101466941A (ja) |
DE (1) | DE112007001326T5 (ja) |
TW (1) | TW200745446A (ja) |
WO (1) | WO2007142180A1 (ja) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102464052B (zh) * | 2010-11-12 | 2016-08-03 | 光阳工业股份有限公司 | 摩托车引擎进气管结合构造 |
CN103114943B (zh) * | 2013-02-26 | 2015-08-12 | 苏州科瓴精密机械科技有限公司 | 发动机的化油器座 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63166654U (ja) * | 1987-04-20 | 1988-10-31 | ||
JPH0519545U (ja) * | 1991-08-22 | 1993-03-12 | 石川島芝浦機械株式会社 | 気化器の断熱装置 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63166654A (ja) * | 1987-07-11 | 1988-07-09 | 新キャタピラ−三菱株式会社 | 自走式搬送装置 |
JPH0519545A (ja) | 1991-02-28 | 1993-01-29 | Ricoh Co Ltd | 画像形成装置 |
JP4373135B2 (ja) | 2003-06-09 | 2009-11-25 | 川崎重工業株式会社 | 空気掃気型の2サイクルエンジン |
-
2006
- 2006-06-06 JP JP2006157772A patent/JP2007327372A/ja active Pending
-
2007
- 2007-06-04 CN CNA2007800212997A patent/CN101466941A/zh active Pending
- 2007-06-04 DE DE112007001326T patent/DE112007001326T5/de not_active Ceased
- 2007-06-04 WO PCT/JP2007/061275 patent/WO2007142180A1/ja active Application Filing
- 2007-06-04 US US12/303,549 patent/US8104446B2/en not_active Expired - Fee Related
- 2007-06-05 TW TW096120055A patent/TW200745446A/zh unknown
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63166654U (ja) * | 1987-04-20 | 1988-10-31 | ||
JPH0519545U (ja) * | 1991-08-22 | 1993-03-12 | 石川島芝浦機械株式会社 | 気化器の断熱装置 |
Also Published As
Publication number | Publication date |
---|---|
US8104446B2 (en) | 2012-01-31 |
TW200745446A (en) | 2007-12-16 |
US20090224532A1 (en) | 2009-09-10 |
JP2007327372A (ja) | 2007-12-20 |
DE112007001326T5 (de) | 2009-04-23 |
CN101466941A (zh) | 2009-06-24 |
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