CN105464784A - Air inflow structure of internal combustion engine - Google Patents
Air inflow structure of internal combustion engine Download PDFInfo
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- CN105464784A CN105464784A CN201510601811.1A CN201510601811A CN105464784A CN 105464784 A CN105464784 A CN 105464784A CN 201510601811 A CN201510601811 A CN 201510601811A CN 105464784 A CN105464784 A CN 105464784A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Abstract
The invention provides an air inflow structure of an internal combustion engine. A cylinder cover is provided with an air inflow port which is open on the top of a combustion chamber in a manner of observing a crescent convex portion along a cylinder axis direction, the crescent convex portion extending outward from the inner periphery of a cylinder bore, an air inlet which is communicated with the air inflow port and a part of the air inlet is bended, and an air valve shaft portion which forms an inlet valve with an umbrella-shaped air valve portion is supported on the cylinder cover in an open-close manner. The opening edge of the cylinder cover side of the cylinder bore is provided with a gap portion used to prevent interference with the air valve portion. In the air inflow structure of an internal combustion engine, a tumble rotating shaft in the combustion chamber stirs in the combustion chamber without deflection in a manner of being orthorhombic with a cylinder axis, so as to improve combustion efficiency. On a part of the air inlet (53) close to the air inlet port (51), a straight line portion (53a) extending along a hypothetical plane (VP) which includes the cylinder axis (C) and the central axis (CV) of the air valve shaft portion is formed.
Description
Technical field
The present invention relates to a kind of intake structure of internal-combustion engine, on the cylinder body of cylinder thorax with chimeric piston sliding freely, be combined in the top forming described piston between above-mentioned cylinder body faced by the cylinder cap of firing chamber, and on above-mentioned cylinder cap, be formed with that there is the inlet valve port that the mode of observing the bellying of the crescent shape bloated outside the inner circumferential of described cylinder thorax from the direction along cylinder-bore axis is opened on the top of above-mentioned firing chamber, with the suction port be communicated with above-mentioned inlet valve port in the mode making a part bend, by with can be supported on described cylinder cap in the air valve shaft portion that together forms intake valve of the valve portion of umbrella of the above-mentioned inlet valve port of opening and closing on-off action, at the peristome of the described cylinder cap side of described cylinder thorax, arrange for avoiding the notch part interfered with described valve portion.
Background technique
The object of rolling stream produced for stirring air and fuel in firing chamber for the efficiency for improving the flame propagation after lighting a fire, there will be a known in patent documentation 1 and the inlet valve port at the top being opened on firing chamber is formed as having the intake structure observing the bellying of the crescent shape bloated outside the inner circumferential of cylinder thorax from the direction along cylinder-bore axis.
Prior art document
Patent documentation
Patent documentation 1: Japanese Unexamined Patent Publication 2013-227966 publication
Summary of the invention
(inventing the problem that will solve)
But, in intake structure disclosed in above-mentioned patent documentation 1, inlet valve port is close to the outer end opening portion of suction port, the flowing in firing chamber of air and fuel easily affects by the shape of suction port, therefore, the running shaft rolling stream in firing chamber can tilt relative to cylinder-bore axis in firing chamber, and this is distinguished by the various checkings of the present application person.
The present invention completes in view of such situation, its object is to the intake structure that a kind of internal-combustion engine is provided, in the mode orthogonal with cylinder-bore axis in firing chamber of the running shaft rolling stream in firing chamber without the stirring carried out on the bias in firing chamber, combustion efficiency can be improved.
(technological scheme of technical solution problem)
For achieving the above object, the invention provides a kind of intake structure of internal-combustion engine, on the cylinder body of cylinder thorax with chimeric piston sliding freely, be combined in the top forming described piston between described cylinder body faced by the cylinder cap of firing chamber, described cylinder cap is formed have the inlet valve port that the mode of observing the bellying of the crescent shape bloated outside the inner circumferential of described cylinder thorax from the direction along cylinder-bore axis is opened on the top of described firing chamber, with the suction port be communicated with described inlet valve port in the mode making a part bend, with can be supported on described cylinder cap in the air valve shaft portion that together forms intake valve of the valve portion of umbrella of inlet valve port described in opening and closing on-off action, at the peristome of the described cylinder cap side of described cylinder thorax, arrange for avoiding the notch part interfered with described valve portion, the feature of the intake structure of described internal-combustion engine is, in the part by described inlet valve port of described suction port, form the line part of the imaginary plane extension along the central axis comprising described cylinder-bore axis and described air valve shaft portion in the lump.
In addition, the intake structure of the internal-combustion engine involved by technical solution of the present invention, on the basis of technique scheme, described line part, on the projection drawing to the plane orthogonal with described cylinder-bore axis, is formed in the mode of the internal face of the shape that to have about described imaginary plane be symmetry.
The intake structure of the internal-combustion engine involved by technical solution of the present invention, on the basis of technique scheme, described line part on the projection drawing to the plane orthogonal with described cylinder-bore axis, be formed at close valve state between the center in described valve portion and the end of described air inlet side being located at the central axis of the guide cylinder on described cylinder cap in the mode led to described air valve shaft portion.
The intake structure of the internal-combustion engine involved by technical solution of the present invention, on the basis of technique scheme, the spark plug with the electrode section being exposed to described firing chamber is installed on described cylinder cap in the mode configuring described electrode section in the position leaving described imaginary plane.
In addition, the intake structure of the internal-combustion engine involved by technical solution of the present invention, on the basis of technique scheme, described cylinder body and rear sidewall opening being had the described cylinder cap of described suction port to be equipped on as the body of the internal-combustion engine of a part for constituting component has on the saddle-ride type vehicle of vehicle frame, this vehicle frame has the frame part at the rear being configured at described suction port and is configured to backbone type, and the upstream-end opening portion of described suction port is formed to point to the mode avoiding the direction of described frame part.
(effect of invention)
According to technological scheme of the present invention, by being formed, there is the inlet valve port observing the bellying of the crescent shape bloated outside the inner circumferential of cylinder thorax from the direction along cylinder-bore axis, when suppressing air inlet to produce in firing chamber from the flowing of the bellying side direction firing chamber of inlet valve port to roll stream when IVO Inlet Valve Open valve, by forming the line part of the imaginary plane extension of the central axis along the air valve shaft portion comprising cylinder-bore axis and intake valve in the part by inlet valve port of suction port, correct in the mode making inlet stream direction point to cylinder-bore axis, effectively can utilize in the mode that the running shaft rolling stream is orthogonal with cylinder-bore axis and roll stream, contribute to the raising of combustion efficiency.
In addition, according to technological scheme of the present invention, on the projection drawing to the plane orthogonal with cylinder-bore axis, the line part imaginary plane had about the central axis comprising cylinder-bore axis and air valve shaft portion is in the lump the internal face of symmetrical shape, therefore, the inlet stream near intake valve can be corrected towards cylinder-bore axis.
According to technological scheme of the present invention, line part is on the projection drawing to the plane orthogonal with cylinder-bore axis, be formed at and close between the center in valve portion of valve state and the end of the air inlet side of the central axis of guide cylinder, therefore, inlet stream can be corrected in the mode that the running shaft rolling stream is orthogonal with cylinder-bore axis.
According to technological scheme of the present invention, in the position of imaginary plane leaving the central axis comprising cylinder-bore axis and air valve shaft portion in the lump, the electrode section of spark plug is exposed to firing chamber, therefore, electrode section can not hinder the generation of rolling stream, can make effectively to produce in firing chamber to roll stream, contribute to the raising of combustion efficiency.
And then, according to technological scheme of the present invention, the frame part of the part forming the vehicle frame of backbone type is configured at the rear of suction port, point to the upstream-end opening portion of suction port the mode avoiding the direction of frame part and configure gas handling system part, to avoid interfering with frame part, even if in above-mentioned such internal-combustion engine, also can make effectively to produce in firing chamber to roll stream, contribute to the raising of combustion efficiency.
Accompanying drawing explanation
Fig. 1 is the right hand view of two-wheeled motorcycle.
Fig. 2 is the major component sectional arrangement drawing of the internal-combustion engine under the valve state of intake valve pass.
Fig. 3 is the 3-3 line sectional drawing of Fig. 1.
Fig. 4 is the 4-4 alignment view of Fig. 2.
Fig. 5 is the 5-5 alignment view of Fig. 2.
Fig. 6 is the sectional arrangement drawing corresponding with Fig. 2 under IVO Inlet Valve Open valve state.
Fig. 7 is the schematic drawing observing suction port from the direction along cylinder-bore axis.
Symbol description
The main car frame rear portion of 13b frame part and main car frame
21 body of the internal-combustion engine
24 cylinder bodies
25 cylinder caps
47 pistons
48 cylinder thoraxes
48a notch part
49 firing chambers
50 tops
51 inlet valve ports
51a bellying
53 suction ports
53a line part
57 intake valves
57a valve portion
57b air valve shaft portion
59 guide cylinders
62 spark plugs
62a electrode section
C cylinder-bore axis
CP1 closes the center in the valve portion of the intake valve of valve state
The air inlet side end of the central axis of CP2 guide cylinder
The central axis in CV air valve shaft portion
F vehicle frame
VP imaginary plane.
Embodiment
With reference to accompanying drawing, embodiments of the present invention are described.In addition, in the following description, front and back, up and down and left and right refer to the direction observed from the passenger riding on two-wheeled motorcycle.
First, in Fig. 1, the vehicle frame F of saddle-ride type vehicle and two-wheeled motorcycle possesses: prop up steerably and honour the head tube 12 that front-wheel WF carries out the front fork 11 of axle supporting, from the single main car frame 13 that this head tube 12 has a down dip backward, be located at the pivot plate 14 of the rearward end of this main car frame 13, front end engages with the intermediate portion of main car frame 13 and the pairing left and right seat guide rail 15 rearward extended, front end engages also the single lower vehicle frame 16 of downward-extension backward with above-mentioned head tube 12 to the more below in the portion that is connected with of above-mentioned head tube 12 in the front end of above-mentioned main car frame 13, by the auxiliary pipe 17 linked between the intermediate portion of above-mentioned main car frame 13 and above-mentioned lower vehicle frame 16, the pairing left and right linked between above-mentioned pivot plate 14 and above-mentioned two seat guide rails 15 is strengthened vehicle frame 18, and this vehicle frame F is configured to backbone type (バ ッ ク ボ ー Application type).
Above-mentioned main car frame 13 integrally have from above-mentioned head tube 12 backward the anterior 13a of semi-steep main car frame and the main car frame rear portion 13b of high-dipping from the rear end of the anterior 13a of this main car frame backward, above-mentioned pivot plate 14 is located at rearward end and the underpart of above-mentioned main car frame rear portion 13b, the front end of above-mentioned seat guide rail 15 engages with the portion of being connected with of above-mentioned main car frame anterior 13a and above-mentioned main car frame rear portion 13b, between the intermediate portion that above-mentioned main car frame front portion 13a is located at by above-mentioned auxiliary pipe 17 and above-mentioned lower vehicle frame 16.
The body of the internal-combustion engine 21 of the internal-combustion engine E of single cylinder is be configured with the crankcase 23 of the supporting crankshaft 22 of axis, cylinder body 24, cylinder cap 25 and cylinder head cover 26 along the width direction of two-wheeled motorcycle to be combined into.This body of the internal-combustion engine 21 is equipped in vehicle frame F in the mode of the below and the space surrounded by main car frame 13, pivot plate 14 and lower vehicle frame 16 that are configured in above-mentioned main car frame 13, to under the lift-launch state of vehicle frame F, the cylinder-bore axis C surface thereof forward of above-mentioned body of the internal-combustion engine 21.
Contain the speed changer (not shown) of the rotating power speed change of above-mentioned bent axle 22 in above-mentioned crankcase 23, an end of the output shaft 28 of this speed changer is given prominence to from crankcase 23 outward more more rearward than above-mentioned bent axle 22.And, be fixed on output shaft 28 nose portion driving sprocket wheel 29 and be located at trailing wheel WR movable sprocket 30 is wrapping with the chain 31 of ring-type.
Above-mentioned trailing wheel WR is supported by the rotatable earth's axis of the rearward end of rocking arm 32, and above-mentioned reinforcement vehicle frame 18 is supported on above-mentioned pivot plate 14 around the axis of the connection shaft 33 linked with above-mentioned pivot plate 14 by the front end of this rocking arm 32 swingably.In addition, between the portion that is connected with to seat guide rail 15 strengthening vehicle frame 18 and the rear portion of above-mentioned rocking arm 32, rear shock absorber unit 34 is provided with.
In Fig. 2, above-mentioned cylinder body 24 has the cylinder thorax 48 of the chimeric piston 47 be connected with above-mentioned bent axle 22 sliding freely, formed between this cylinder body 24 and the above-mentioned cylinder cap 25 be combined with this cylinder body 24 top of above-mentioned piston 47 faced by firing chamber 49.
Above-mentioned cylinder cap 25 is formed: be opened on the inlet valve port 51 at the top 50 of above-mentioned firing chamber 49 and be vented doorway 52, with the suction port 53 making the bending mode of a part be communicated with above-mentioned inlet valve port 51, with the relief opening 54 making the bending mode of a part be communicated with above-mentioned exhaust doorway 52.
Above-mentioned inlet valve port 51 is by being formed with the molded valve seat parts 55 combining (モ ー Le De Knot closes) of above-mentioned cylinder cap 25, and above-mentioned exhaust doorway 52 is by being formed with the molded valve seat parts 56 combined of above-mentioned cylinder cap 25.
The opening and closing of above-mentioned inlet valve port 51 is undertaken by intake valve 57, this intake valve 57 integrally has seat in above-mentioned valve seat parts 55 and the valve portion 57a that can close the umbrella of above-mentioned the inlet valve port 51 and air valve shaft portion 57b coaxially linked with this valve portion 57a, above-mentioned air valve shaft portion 57b is fitted together to sliding freely in the guide cylinder 59 being located at above-mentioned cylinder cap 25, thus, intake valve 57 can be supported on above-mentioned cylinder cap 25 on-off action.In addition, the opening and closing on above-mentioned exhaust doorway 52 is undertaken by exhaust valve 58, this exhaust valve 58 integrally has seat in above-mentioned valve seat parts 56 and the valve portion 58a that can cut out the umbrella on above-mentioned exhaust the doorway 52 and air valve shaft portion 58b coaxially linked with this valve portion 58a, above-mentioned air valve shaft portion 58b is fitted together to sliding freely in the guide cylinder 60 being located at above-mentioned cylinder cap 25, thus, exhaust valve 58 can be supported on above-mentioned cylinder cap 25 on-off action.
The outer end of above-mentioned relief opening 54 is at the toe lateral wall opening of above-mentioned cylinder cap 25, and as shown in Figure 1, outlet pipe 36 is connected to the anterior sidewall of above-mentioned cylinder cap 25 in the mode linked with the outer end opening portion of above-mentioned relief opening 54.This outlet pipe 36 also rearward extends from the front of body of the internal-combustion engine 21 around the below entering crankcase 23, and is connected by the exhaust silencer 37 of the downstream of above-mentioned outlet pipe 36 with the right side being configured at trailing wheel WR.
In the lump with reference to Fig. 3, the outer end of above-mentioned suction port 53 is at the rear sidewall opening of above-mentioned cylinder cap 25, the rear sidewall of the downstream of suction tude 39 with above-mentioned cylinder cap 25 to be connected with the mode that the outer end opening portion of this suction port 53 links, this suction tude 39 rearward extends from above-mentioned cylinder cap 25.In addition, air-strainer 40 is had in the rear fixed configurations of above-mentioned cylinder cap 25, upstream extremity is connected with vaporizer 42 with the downstream of the connecting tube 41 that this air-strainer 40 is connected, and this vaporizer 42 is connected with the upstream extremity of above-mentioned suction tude 39 via bending connecting tube 43.
But, at the rear of above-mentioned suction port 53, as the frame part of a part for formation vehicle frame F, be configured with the above-mentioned main car frame rear portion 13b of above-mentioned main car frame 13.The upstream-end opening portion of above-mentioned suction port 53 is formed to point to the mode avoiding the direction of above-mentioned main car frame rear portion 13b, and in this mode of execution, the upstream-end opening portion of above-mentioned suction port 53 is formed in the mode pointing to oblique left back opening.Therefore, by connect between above-mentioned air-strainer 40 and above-mentioned suction port 53 above-mentioned connecting tube 41, above-mentioned vaporizer 42, above-mentioned connecting tube 43 and above-mentioned suction tude 39 to be to configure from the left side of above-mentioned main car frame rear portion 13b around the mode entering front.
In addition, the fuel tank 44 covering above-mentioned body of the internal-combustion engine 21 from top is located at the anterior 13a of above-mentioned main car frame of above-mentioned main car frame 13, and the auto use chair 45 of taking advantage of being configured at the rear of this fuel tank 44 is located on above-mentioned seat guide rail 15.
In Fig. 4, the above-mentioned valve seat parts 55 forming above-mentioned inlet valve port 51 have the position namely observing the bellying 51a (point retouches shown part) of the crescent shape bloated outside the inner circumferential of above-mentioned cylinder thorax 48 from the central axis of above-mentioned cylinder thorax 48 along the direction of cylinder-bore axis C at above-mentioned inlet valve port 51, be fixedly arranged on above-mentioned cylinder cap 25.But the peristome 50a at the top 50 of above-mentioned firing chamber 49 and the inner circumferential of above-mentioned cylinder thorax 48 are formed roughly accordingly, and above-mentioned bellying 51a is configured in the position of a part of having cut above-mentioned peristome 50a.In addition, the open end of the part in above-mentioned top 50 except the above-mentioned bellying 51a of above-mentioned inlet valve port 51 forms squish portion 61.
In the lump with reference to Fig. 6, peristome in above-mentioned cylinder cap 25 side of above-mentioned cylinder thorax 48 is arranged for avoiding the notch part 48a interfered with the above-mentioned valve portion 57a of above-mentioned intake valve 57, and also arranges for avoiding the notch part 47a interfered with above-mentioned valve portion 57a in the above-mentioned firing chamber 49 side end outer rim of above-mentioned piston 47.
As above-mentioned, by forming the inlet valve port 51 having and observe the bellying 51a of the crescent shape bloated laterally from the inner circumferential of cylinder thorax 48 and the peristome 50a at top 50 from the direction along cylinder-bore axis C, as shown in Figure 6, when intake valve 57 opens valve, suppress air inlet from the flowing of the bellying 51a side direction firing chamber 49 of inlet valve port 51, thus, can make to produce in firing chamber 49 to roll stream, but because inlet valve port 51 is close to the outer end opening portion of suction port 53, air and the flowing of fuel in firing chamber 49 are easily by the impact of the shape of suction port 53, so the running shaft rolling stream in firing chamber 49 can tilt relative to the central axis in firing chamber 49 and cylinder-bore axis C, this is that present inventor is distinguished by various checking, and seek not produce this inclination of running shaft relative to cylinder-bore axis C of rolling stream.
Fig. 7 is the projection drawing of above-mentioned suction port 53 to the plane orthogonal with cylinder-bore axis C, as as indicated in this Fig. 7, according to the present invention, form the line part 53a of the imaginary plane VP extension along the central axis CV comprising above-mentioned cylinder-bore axis C and above-mentioned air valve shaft portion 57b in the lump in the part by above-mentioned inlet valve port 51 of above-mentioned suction port 53.
And above-mentioned line part 53a, on the projection drawing to the plane orthogonal with above-mentioned cylinder-bore axis C, is formed in the mode of the internal face of the shape that to have about above-mentioned imaginary section VP be symmetry.
In addition, above-mentioned line part 53a on the projection drawing to the plane orthogonal with above-mentioned cylinder-bore axis C, be formed at close valve state above-mentioned valve portion 57a center CP1 and be located in the mode led to above-mentioned air valve shaft portion 57b the central axis of the guide cylinder 59 of above-mentioned cylinder cap 25 above-mentioned suction port 53 side end CP2 between region A.
But, above-mentioned cylinder cap 25 is installed the spark plug 62 with the electrode section 62a being exposed to above-mentioned firing chamber 49, but this spark plug 62 is installed on above-mentioned cylinder cap 25 in the mode configuring above-mentioned electrode section 62a in the position leaving above-mentioned imaginary plane VP.
Secondly, the effect of this mode of execution is described, the line part 53a of the imaginary plane VP extension along the central axis CV comprising cylinder-bore axis C and air valve shaft portion 57b is in the lump formed in the part by inlet valve port 51 of suction port 53, therefore, when suppressing air inlet when intake valve 57 opens valve stream being rolled in generation firing chamber 49 in from the flowing of the bellying 51a side direction firing chamber 49 of inlet valve port 51, correct in the mode making inlet stream direction point to cylinder-bore axis C, effectively can utilize in the mode that the running shaft rolling stream is orthogonal with cylinder-bore axis C in firing chamber 49 and roll stream, contribute to the raising of combustion efficiency.
In addition, above-mentioned line part 53a is on the projection drawing to the plane orthogonal with above-mentioned cylinder-bore axis C, formed in the mode of the internal face of the shape that to have about above-mentioned imaginary plane VP be symmetry, therefore, the inlet stream near intake valve 57 can be corrected towards cylinder-bore axis C.
In addition, above-mentioned line part 53a is on the projection drawing to the plane orthogonal with above-mentioned cylinder-bore axis C, be formed at the region A between the center CP1 of the above-mentioned valve portion 57a of the intake valve 57 closing valve state and the end CP2 being located at above-mentioned suction port 53 side of the central axis of the guide cylinder 59 of above-mentioned cylinder cap 25 in the mode led to the above-mentioned air valve shaft portion 57b of above-mentioned intake valve 57, therefore, inlet stream can be corrected in the mode that the running shaft rolling stream is orthogonal with cylinder-bore axis C.
In addition, the spark plug 62 with the electrode section 62a being exposed to above-mentioned firing chamber 49 is installed on above-mentioned cylinder cap 25 in the mode configuring above-mentioned electrode section 62a in the position leaving above-mentioned imaginary plane VP, therefore, electrode section 62a can not hinder the generation of rolling stream, can make effectively to produce in firing chamber 49 to roll stream, contribute to the raising of combustion efficiency.
In addition, the main car frame rear portion 13b of the main car frame 13 that the vehicle frame F that the formation of carrying body of the internal-combustion engine 21 is backbone type has is configured in the rear of above-mentioned suction port 53, the upstream-end opening portion of above-mentioned suction port 53 is formed to point to the mode avoiding the direction of above-mentioned main car frame rear portion 13b, therefore, although by the connecting tube 41 connected between air-strainer 40 and suction port 53, vaporizer 42, connecting tube 43 and above-mentioned suction tude 39 are to configure from the left side of above-mentioned main car frame rear portion 13b around the mode entering front, even but such internal-combustion engine E, also can make effectively to produce in firing chamber 49 to roll stream, contribute to the raising of combustion efficiency.
Being explained above embodiments of the present invention, but the invention is not restricted to above-mentioned mode of execution, not departing from the situation of the present invention described in claims, can various design alteration be carried out.
Claims (5)
1. the intake structure of an internal-combustion engine, on the cylinder body (24) of cylinder thorax (48) with chimeric piston (47) sliding freely, be combined in the top forming described piston (47) between described cylinder body (24) faced by the cylinder cap (25) of firing chamber (49), described cylinder cap (25) is formed have the inlet valve port (51) that the mode of observing the bellying (51a) of the crescent shape bloated outside the inner circumferential of described cylinder thorax (48) from the direction along cylinder-bore axis (C) is opened on the top (50) of described firing chamber (49), with the suction port (53) be communicated with described inlet valve port (51) in the mode making a part bend, with can be supported on described cylinder cap (25) in the air valve shaft portion (57b) that together forms intake valve (57) of the valve portion (57a) of umbrella of inlet valve port (51) described in opening and closing on-off action, at the peristome of described cylinder cap (25) side of described cylinder thorax (48), setting is used for the notch part (48a) avoiding interfering with described valve portion (57a), the feature of the intake structure of described internal-combustion engine is, in the part by described inlet valve port (51) of described suction port (53), form the line part (53a) extended along the imaginary plane (VP) of the central axis (CV) comprising described cylinder-bore axis (C) and described air valve shaft portion (57b) in the lump.
2. the intake structure of internal-combustion engine according to claim 1, it is characterized in that, described line part (53a), on the projection drawing to the plane orthogonal with described cylinder-bore axis (C), is formed in the mode that to have about described imaginary plane (VP) be the internal face of symmetrical shape.
3. the intake structure of internal-combustion engine according to claim 1 and 2, it is characterized in that, described line part (53a) on the projection drawing to the plane orthogonal with described cylinder-bore axis (C), be formed at close valve state described valve portion (57a) center (CP1) and be located in the mode led to described air valve shaft portion (57b) guide cylinder (59) on described cylinder cap (25) central axis described suction port (53) side end (CP2) between.
4. the intake structure of the internal-combustion engine according to any one of claims 1 to 3, it is characterized in that, the spark plug (62) with the electrode section (62a) being exposed to described firing chamber (49) is installed on described cylinder cap (25) in the mode configuring described electrode section (62a) in the position leaving described imaginary plane (VP).
5. the intake structure of the internal-combustion engine according to any one of Claims 1 to 4, it is characterized in that, by described cylinder body (24), with on the saddle-ride type vehicle that rear sidewall opening has the described cylinder cap (25) of described suction port (53) to be equipped on as the body of the internal-combustion engine (21) of a part for constituting component to have vehicle frame (F), this vehicle frame (F) has the frame part (13b) at the rear being configured at described suction port (53) and is configured to backbone type, the upstream-end opening portion of described suction port (53) is formed to point to the mode avoiding the direction of described frame part (13b).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014195034A JP6228091B2 (en) | 2014-09-25 | 2014-09-25 | Intake structure of internal combustion engine |
| JP2014-195034 | 2014-09-25 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105464784A true CN105464784A (en) | 2016-04-06 |
| CN105464784B CN105464784B (en) | 2018-06-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510601811.1A Active CN105464784B (en) | 2014-09-25 | 2015-09-21 | The intake structure of internal combustion engine |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6228091B2 (en) |
| CN (1) | CN105464784B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111287862A (en) * | 2020-05-13 | 2020-06-16 | 潍柴动力股份有限公司 | Cylinder cover and gas engine |
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| CN1654793A (en) * | 2004-02-10 | 2005-08-17 | 日产自动车株式会社 | Combustion chamber structure for internal combustion engine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111287862A (en) * | 2020-05-13 | 2020-06-16 | 潍柴动力股份有限公司 | Cylinder cover and gas engine |
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| US11187182B1 (en) | 2020-05-13 | 2021-11-30 | Weichai Power Co., Ltd. | Cylinder head and gas engine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105464784B (en) | 2018-06-22 |
| JP2016065497A (en) | 2016-04-28 |
| JP6228091B2 (en) | 2017-11-08 |
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