WO2007132606A1 - エンジンの吸気ポ-ト構造 - Google Patents
エンジンの吸気ポ-ト構造 Download PDFInfo
- Publication number
- WO2007132606A1 WO2007132606A1 PCT/JP2007/057985 JP2007057985W WO2007132606A1 WO 2007132606 A1 WO2007132606 A1 WO 2007132606A1 JP 2007057985 W JP2007057985 W JP 2007057985W WO 2007132606 A1 WO2007132606 A1 WO 2007132606A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- intake
- intake port
- wall
- swirl
- cylinder
- 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.)
- Ceased
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F1/00—Cylinders; Cylinder heads
- F02F1/24—Cylinder heads
- F02F1/42—Shape or arrangement of intake or exhaust channels in cylinder heads
- F02F1/4235—Shape or arrangement of intake or exhaust channels in cylinder heads of intake channels
-
- 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
- F02B31/00—Modifying induction systems for imparting a rotation to the charge in the cylinder
- F02B31/04—Modifying induction systems for imparting a rotation to the charge in the cylinder by means within the induction channel, e.g. deflectors
- F02B31/042—Modifying induction systems for imparting a rotation to the charge in the cylinder by means within the induction channel, e.g. deflectors induction channel having a helical shape around the intake valve axis
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F1/00—Cylinders; Cylinder heads
- F02F1/24—Cylinder heads
- F02F1/42—Shape or arrangement of intake or exhaust channels in cylinder heads
- F02F1/4214—Shape or arrangement of intake or exhaust channels in cylinder heads specially adapted for four or more valves per cylinder
-
- 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
- F02B2275/00—Other engines, components or details, not provided for in other groups of this subclass
- F02B2275/14—Direct injection into combustion chamber
-
- 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
- F02B23/00—Other engines characterised by special shape or construction of combustion chambers to improve operation
- F02B23/02—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition
- F02B23/06—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition the combustion space being arranged in working piston
- F02B23/0645—Details related to the fuel injector or the fuel spray
- F02B23/0654—Thermal treatments, e.g. with heating elements or local cooling
- F02B23/0657—Thermal treatments, e.g. with heating elements or local cooling the spray interacting with one or more glow plugs
-
- 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
- F02B23/00—Other engines characterised by special shape or construction of combustion chambers to improve operation
- F02B23/02—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition
- F02B23/06—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition the combustion space being arranged in working piston
- F02B23/0672—Omega-piston bowl, i.e. the combustion space having a central projection pointing towards the cylinder head and the surrounding wall being inclined towards the cylinder center axis
-
- 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
Definitions
- the present invention relates to an intake port of an engine in which first and second intake ports extending in a direction orthogonal to a cylinder row line are respectively communicated with first and second intake valve holes that open to a combustion chamber.
- first and second intake ports extending in a direction orthogonal to a cylinder row line are respectively communicated with first and second intake valve holes that open to a combustion chamber.
- one intake port arranged on the right side with respect to the cylinder axis is curved to the left side and connected in a tangential direction to the inner periphery of the cylinder to generate a swirl in the clockwise direction.
- the other intake port located on the left side with respect to the axis is curved to the left so as to avoid the one intake port, and then curved to the right in front of the one intake port and over the one intake port.
- Patent Document 1 Japanese Unexamined Patent Publication No. 7-34884
- both of the two intake ports are connected tangentially to the inner periphery of the cylinder to generate a swirl.
- a helical port is used instead of a straight port as the intake port, it is not necessary to connect the intake port tangentially to the inner periphery of the cylinder, so there is no need to bend the intake port. If one helical port is used, swirl generated at both ports May interfere with sufficient performance.
- the present invention has been made in view of the above-described circumstances, and an object thereof is to generate sufficient swirl while simplifying the structure of two intake ports connected to a combustion chamber of an engine. Means for solving the problem
- the first and second intake ports extending in the direction orthogonal to the cylinder row line are opened to the combustion chamber.
- the first intake port has a throat portion formed in a straight line and opens in a tangential direction of the inner periphery of the cylinder.
- the second intake port is a helical port that has a throat portion formed in a spiral shape and generates a second swirl in the same direction as the first swirl inside the first swirl
- the second intake port includes a spiral outer wall formed along a peripheral edge of the second intake valve hole, A spiral inner wall formed on the radially outer side of the valve stem located at the center of the second intake valve hole; a first introduction wall extending in a tangential direction of the second intake valve hole; (1) Having a second introduction wall that is continuously connected to the spiral inner wall from a state parallel to the introduction wall, and the distance between the first and second introduction walls is reduced toward the downstream side in the flow direction of the intake air. Accordingly, an engine intake port structure is proposed in which the distance between the walls in the direction orthogonal to the distance between the first and second introduction walls is increased. .
- the first and second intake ports are located on one side of a cylinder row.
- the engine intake port structure is proposed.
- the first intake port formed of a straight port has a throat portion formed in a straight line and opens in a tangential direction of the inner periphery of the cylinder to generate a first swirl.
- the second intake port formed of a helical port has a throat portion formed in a spiral shape to generate a second swirl in the same direction as the first swirl inside the first swirl.
- the second feature of the present invention even if the width of the throat portion of the second intake port having the spiral outer wall and the spiral inner wall in order to generate the swirl is narrowed as viewed in the cylinder axial direction, As the distance between the walls of the first and second introduction walls connected to the outer wall and the spiral inner wall decreases toward the downstream side in the flow direction of the intake air, the distance between the first and second introduction walls increases in the direction orthogonal to the distance between the walls. By increasing the distance between the walls, the increase in intake flow resistance at the throat can be minimized.
- the first and second intake ports are arranged on one side of the cylinder row line, the length of the intake port is minimized and the structure of the cylinder head is provided. Can be simplified.
- Fig. 1 is a horizontal sectional view of a cylinder head of a diesel engine (a sectional view taken along a line 11 in Fig. 3). (First example)
- FIG. 2 is an enlarged view of the main part of FIG. (First example)
- FIG. 3 is a cross-sectional view taken along line 3-3 of FIG. (First example)
- FIG. 4 is a cross-sectional view taken along line 4-4 of FIG. (First example)
- FIG. 5 is a cross-sectional view taken along line 5-5 of FIG. (First example)
- Fig. 6 is a perspective view of the first and second intake ports (seen in the direction of arrow 6 in Fig. 3). (First example)
- FIG. 7 is a view taken in the direction of arrow 7 in FIG. (First example)
- 1 to 7 show an embodiment of the present invention.
- an in-line four-cylinder diesel engine has four pistons 12 slidably fitted to four cylinders 1 la ′ formed on a cylinder block 11.
- the reentrant combustion chamber 13 is recessed in the top surface of each piston 12.
- the first and second intake valve holes 15 and 16 that face the top surface of each cylinder 11 and the first and second exhaust valve holes 17 are formed on the lower surface of the cylinder head 14 coupled to the upper surface of the cylinder block 11. , 18 are open, the first and second intake valve holes 15, 16 communicate with the first and second intake valve holes 15, 16, and the first and second exhaust valve holes 17, 18 communicate with each other.
- the first and second exhaust ports 21 and 22 communicate with each other.
- the first and second intake ports 19, 20 are arranged on one side with respect to the cylinder row line L1 connecting the centers of the four cylinders 11a ..., and the first and second exhaust ports 21, 22 are the other. Placed on the side.
- the first and second intake ports 19 and 20 independently extend in a substantially straight line in a direction perpendicular to the cylinder row line L1, and the downstream ends of the first and second exhaust ports 21 and 22 join.
- Piston 12 is top dead center
- the squish area is formed between the upper surface of the piston 12 and the lower surface of the cylinder head 14.
- the first and second intake valves 23, 24 include valve bodies 23a, 24a for opening and closing the first and second intake valve holes 15, 16, and valve stems 23b, 24b connected to the valve bodies 23a, 24a.
- the valve stems 23b, 24b arranged parallel to the cylinder axis L2 are slidably supported by the valve guides 25, 25 and are urged in the valve closing direction by the intake valve springs 26, 26.
- One end of the intake rocker arm 28 supported by the hydraulic tappet 27 is in contact with the stem ends of the first and second intake valves 23 and 24, and a roller 29 provided in the middle is an intake cam provided on the intake camshaft 30. Abuts 31.
- the first and second exhaust valves 32, 33 include a valve body 32a, 33a for opening and closing the first and second exhaust valve holes 17, 18, and a noreb stem 32b, 33b connected to the noreb body 32a, 33a.
- the valve stems 32b and 33b arranged parallel to the cylinder axis L2 are slidably supported by the valve guides 34 and 34, and are urged in the valve closing direction by the exhaust valve springs 35 and 35.
- One end of the exhaust outlet arm 37 supported by the hydraulic tappet 36 is in contact with the stem ends of the first and second exhaust valves 32 and 33, and a roller 38 provided in the middle is an exhaust provided on the exhaust camshaft 39.
- Contact cam 40 is provided to contact cam 40.
- the tip of the injector 41 positioned on the cylinder axis L2 and the tip of the glow plug 42 inclined with respect to the cylinder axis L2 are arranged so as to face the combustion chamber 13.
- the first intake port 19 is a straight port in which the throat portion 43 immediately upstream of the first intake valve hole 15 extends linearly, and is viewed in the cylinder axis L2 direction. It is connected in a tangential direction to the inner periphery of the cylinder 11a. Therefore, the first intake valve 23 is opened.
- the first swirl S1 is generated so as to surround the cylinder axis L2 by flowing in the tangential direction of the inner circumference of the cylinder 1 la. To do.
- the second intake port 20 is a helical port that extends spirally so that the throat portion 44 immediately upstream of the second intake valve hole 16 surrounds the valve stem 24 b of the second intake valve 24.
- the slot 44 includes a spiral outer wall 44a formed to be tangentially connected to the inner periphery of the second intake valve hole 16, and a spiral formed radially outside the valve stem 24b of the second intake valve 24.
- An inner wall 44b is provided, and the distance between the turning outer wall 44a and the turning inner wall 44b is narrowed toward the downstream side in the intake flow direction.
- the first introduction wall 45 connected to the upstream side of the turning outer wall 44a has a substantially linear force.
- the second introduction wall 46 connected to the turning inner wall 44b facing the first introduction wall 45 is closer to the downstream side. Curved in a direction approaching the first introduction wall 45.
- the width of the second intake port 20 viewed in the cylinder axis L2 direction that is, the distance W between the first and second introduction walls 45 and 46 (see FIG. 2) is narrower toward the downstream side. Distribution resistance further increases.
- the distance H between the walls of the second intake port 20 (see FIG. 4) as viewed in the direction perpendicular to the cylinder axis L2 increases toward the downstream side.
- the narrowing of the throat portion 44 of the 20 and the narrowing of the width W of the second intake port 20 on the upstream side thereof are compensated by the wide force S of the height H of the second intake port 20 to provide a highly restrictive helical
- the increase in the flow resistance of the intake air of the second intake port 20 consisting of the ports can be minimized.
- the first intake port 19 which is a straight port, is connected tangentially to the inner periphery of the cylinder 11a.
- 1 swirl S1 is generated, and a second swirl S2 in the same direction as the first swirl S1 is generated inside the first swirl S1 by the second intake port 20 consisting of a helical port.
- Strong swirl can be generated effectively by minimizing SI and S2 interference.
- the swirl SI and S2 can be generated efficiently while the first and second intake ports 19 and 20 are arranged substantially linearly in the direction perpendicular to the cylinder row line L1. Therefore, the machining cost of the cylinder head 14 can be reduced, the cylinder head 14 can be made compact, and the structure of the cylinder head 14 can be simplified.
- first and second intake ports 19, 20 are arranged on one side with respect to the cylinder axis L1, and extend to the opposite side of the cylinder axis L1 (first and second exhaust ports 21, 22 side). Therefore, the length of the first and second intake ports 19, 20 can be kept to a minimum, thereby further reducing the processing cost of the cylinder head 14 and further reducing the cylinder head 14.
- the structure of the cylinder head 14 can be further simplified.
- the power exemplified by an in-line four-cylinder engine can be applied to an engine having an arbitrary number of cylinders.
- the cylinder row direction L1 of the present invention is defined as a direction parallel to the crankshaft.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
Description
Claims
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US12/296,480 US7707989B2 (en) | 2006-05-11 | 2007-04-11 | Intake port structure for engine |
| MX2008013077A MX2008013077A (es) | 2006-05-11 | 2007-04-11 | Estructura de orificio de admision para motor. |
| EP07741421A EP2017454A4 (en) | 2006-05-11 | 2007-04-11 | INTAKE CHANNEL STRUCTURE FOR ENGINE |
| CA2645713A CA2645713C (en) | 2006-05-11 | 2007-04-11 | Intake port structure for engine |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006132457A JP4680828B2 (ja) | 2006-05-11 | 2006-05-11 | エンジンの吸気ポ−ト構造 |
| JP2006-132457 | 2006-05-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2007132606A1 true WO2007132606A1 (ja) | 2007-11-22 |
Family
ID=38693707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2007/057985 Ceased WO2007132606A1 (ja) | 2006-05-11 | 2007-04-11 | エンジンの吸気ポ-ト構造 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US7707989B2 (ja) |
| EP (1) | EP2017454A4 (ja) |
| JP (1) | JP4680828B2 (ja) |
| CA (1) | CA2645713C (ja) |
| MX (1) | MX2008013077A (ja) |
| WO (1) | WO2007132606A1 (ja) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016151207A (ja) * | 2015-02-17 | 2016-08-22 | 三菱重工業株式会社 | シリンダヘッド、および、エンジン |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4277857B2 (ja) * | 2006-01-27 | 2009-06-10 | トヨタ自動車株式会社 | 内燃機関の吸気ポート |
| EP2131025A1 (en) * | 2008-06-06 | 2009-12-09 | General Electric Company | Intake channels for internal combustion engines |
| CN102482986B (zh) * | 2009-08-20 | 2014-04-09 | 品纳科动力有限公司 | 高涡流引擎 |
| US9086021B2 (en) * | 2009-11-05 | 2015-07-21 | Toyota Jidosha Kabushiki Kaisha | Intake apparatus of engine |
| AT508074B1 (de) * | 2010-03-18 | 2011-09-15 | Avl List Gmbh | Zylinderkopf |
| GB2484504B (en) * | 2010-10-12 | 2016-08-10 | Gm Global Tech Operations Llc | Two-duct intake port configuration for a combustion chamber of an internal combustion engine |
| KR101745005B1 (ko) * | 2011-10-07 | 2017-06-09 | 현대자동차주식회사 | 디젤-가솔린 복합연료엔진 |
| KR102058755B1 (ko) * | 2012-12-26 | 2020-01-22 | 두산인프라코어 주식회사 | 엔진의 흡기구 구조 |
| WO2016004012A2 (en) * | 2014-06-30 | 2016-01-07 | Cummins Inc. | System and method for valve size ratio and igniter placement |
| GB2553821B (en) * | 2016-09-15 | 2020-04-01 | Perkins Engines Co Ltd | Cylinder head with helical inlet passage |
| KR101826562B1 (ko) * | 2016-11-02 | 2018-02-07 | 현대자동차 주식회사 | 가솔린-디젤 혼합 연소 엔진의 제어 장치 및 방법 |
| DE102017112350B4 (de) * | 2017-06-06 | 2024-10-17 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Zylinderkopf für eine Verbrennungskraftmaschine, Verbrennungskraftmaschine und Verfahren zum Betreiben einer Verbrennungskraftmaschine |
| JP2019127884A (ja) * | 2018-01-24 | 2019-08-01 | マツダ株式会社 | エンジンのシリンダヘッド |
| GB2611102A (en) | 2021-09-28 | 2023-03-29 | Jcb Res | Internal combustion engine |
| JP2023073137A (ja) * | 2021-11-15 | 2023-05-25 | ヤマハ発動機株式会社 | 船舶推進機、船舶及び船舶用エンジン |
| CN117685127B (zh) * | 2024-02-04 | 2024-05-17 | 潍柴动力股份有限公司 | 一种发动机缸盖以及发动机 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0734884A (ja) | 1993-05-18 | 1995-02-03 | Mazda Motor Corp | ディーゼルエンジンの吸気装置 |
| JPH09287461A (ja) * | 1996-04-19 | 1997-11-04 | Toyota Motor Corp | 内燃機関の吸気装置 |
| JPH1037751A (ja) * | 1996-07-23 | 1998-02-10 | Toyota Motor Corp | 内燃機関の吸気装置 |
| JP2002188451A (ja) * | 2000-12-22 | 2002-07-05 | Toyota Industries Corp | ディーゼルエンジンの吸気装置 |
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| JPS6035539B2 (ja) * | 1981-07-31 | 1985-08-15 | トヨタ自動車株式会社 | ヘリカル型吸気ポ−トの流路制御装置 |
| JPH0646021B2 (ja) * | 1984-05-07 | 1994-06-15 | トヨタ自動車株式会社 | 内燃機関の点火時期制御装置 |
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| US5435283A (en) * | 1994-01-07 | 1995-07-25 | Cummins Engine Company, Inc. | Swirl control system for varying in-cylinder swirl |
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-
2006
- 2006-05-11 JP JP2006132457A patent/JP4680828B2/ja not_active Expired - Fee Related
-
2007
- 2007-04-11 CA CA2645713A patent/CA2645713C/en not_active Expired - Fee Related
- 2007-04-11 EP EP07741421A patent/EP2017454A4/en not_active Withdrawn
- 2007-04-11 WO PCT/JP2007/057985 patent/WO2007132606A1/ja not_active Ceased
- 2007-04-11 MX MX2008013077A patent/MX2008013077A/es active IP Right Grant
- 2007-04-11 US US12/296,480 patent/US7707989B2/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0734884A (ja) | 1993-05-18 | 1995-02-03 | Mazda Motor Corp | ディーゼルエンジンの吸気装置 |
| JPH09287461A (ja) * | 1996-04-19 | 1997-11-04 | Toyota Motor Corp | 内燃機関の吸気装置 |
| JPH1037751A (ja) * | 1996-07-23 | 1998-02-10 | Toyota Motor Corp | 内燃機関の吸気装置 |
| JP2002188451A (ja) * | 2000-12-22 | 2002-07-05 | Toyota Industries Corp | ディーゼルエンジンの吸気装置 |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP2017454A4 |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016151207A (ja) * | 2015-02-17 | 2016-08-22 | 三菱重工業株式会社 | シリンダヘッド、および、エンジン |
| WO2016132787A1 (ja) * | 2015-02-17 | 2016-08-25 | 三菱重工業株式会社 | シリンダヘッド、および、エンジン |
| CN107250518A (zh) * | 2015-02-17 | 2017-10-13 | 三菱重工业株式会社 | 气缸盖以及发动机 |
| CN107250518B (zh) * | 2015-02-17 | 2019-08-09 | 三菱重工发动机和增压器株式会社 | 气缸盖以及发动机 |
| US10519895B2 (en) | 2015-02-17 | 2019-12-31 | Mitsubishi Heavy Industries Engine & Turbocharger, Ltd. | Cylinder head and engine |
Also Published As
| Publication number | Publication date |
|---|---|
| MX2008013077A (es) | 2008-12-16 |
| JP2007303365A (ja) | 2007-11-22 |
| EP2017454A4 (en) | 2011-11-16 |
| EP2017454A1 (en) | 2009-01-21 |
| CA2645713A1 (en) | 2007-11-22 |
| CA2645713C (en) | 2011-05-24 |
| US20090159041A1 (en) | 2009-06-25 |
| JP4680828B2 (ja) | 2011-05-11 |
| US7707989B2 (en) | 2010-05-04 |
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