JP6260492B2 - 直噴式エンジンのピストンの製造方法 - Google Patents
直噴式エンジンのピストンの製造方法 Download PDFInfo
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- 238000002347 injection Methods 0.000 title claims description 24
- 239000007924 injection Substances 0.000 title claims description 24
- 238000004519 manufacturing process Methods 0.000 title claims description 14
- 238000007789 sealing Methods 0.000 claims description 42
- 238000000034 method Methods 0.000 claims description 31
- 229910000838 Al alloy Inorganic materials 0.000 claims description 23
- 238000007743 anodising Methods 0.000 claims description 17
- 239000000446 fuel Substances 0.000 claims description 14
- 239000011148 porous material Substances 0.000 claims description 11
- 238000000227 grinding Methods 0.000 claims description 10
- 230000015572 biosynthetic process Effects 0.000 claims description 9
- 239000010407 anodic oxide Substances 0.000 claims description 7
- 238000002360 preparation method Methods 0.000 claims description 5
- 230000004888 barrier function Effects 0.000 description 10
- 230000000873 masking effect Effects 0.000 description 8
- 238000000576 coating method Methods 0.000 description 7
- 239000003795 chemical substances by application Substances 0.000 description 6
- 239000010410 layer Substances 0.000 description 6
- 239000000654 additive Substances 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000005868 electrolysis reaction Methods 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 230000000996 additive effect Effects 0.000 description 4
- 239000011247 coating layer Substances 0.000 description 4
- 239000008151 electrolyte solution Substances 0.000 description 4
- 239000012528 membrane Substances 0.000 description 4
- 229910052814 silicon oxide Inorganic materials 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 230000003746 surface roughness Effects 0.000 description 4
- 239000000919 ceramic Substances 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000007740 vapor deposition Methods 0.000 description 2
- 206010016717 Fistula Diseases 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000002048 anodisation reaction Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 230000003890 fistula Effects 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000007750 plasma spraying Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229920001709 polysilazane Polymers 0.000 description 1
- -1 polysiloxane Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 238000004528 spin coating Methods 0.000 description 1
- 238000007751 thermal spraying Methods 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/04—Anodisation of aluminium or alloys based thereon
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/04—Anodisation of aluminium or alloys based thereon
- C25D11/045—Anodisation of aluminium or alloys based thereon for forming AAO templates
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/04—Anodisation of aluminium or alloys based thereon
- C25D11/16—Pretreatment, e.g. desmutting
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/04—Anodisation of aluminium or alloys based thereon
- C25D11/18—After-treatment, e.g. pore-sealing
- C25D11/24—Chemical after-treatment
- C25D11/246—Chemical after-treatment for sealing layers
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/02—Electroplating of selected surface areas
- C25D5/022—Electroplating of selected surface areas using masking means
-
- 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
- F02B17/00—Engines characterised by means for effecting stratification of charge in cylinders
- F02B17/005—Engines characterised by means for effecting stratification of charge in cylinders having direct injection in the combustion chamber
-
- 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
- F02F3/00—Pistons
- F02F3/10—Pistons having surface coverings
- F02F3/12—Pistons having surface coverings on piston heads
-
- 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
- F02F3/00—Pistons
- F02F3/10—Pistons having surface coverings
- F02F3/12—Pistons having surface coverings on piston heads
- F02F3/14—Pistons having surface coverings on piston heads within combustion chambers
-
- 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
- F02B23/0603—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 at least part of the interior volume or the wall of the combustion space being made of material different from the surrounding piston part, e.g. combustion space formed within a ceramic part fixed to a metal piston head
- F02B2023/0609—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 at least part of the interior volume or the wall of the combustion space being made of material different from the surrounding piston part, e.g. combustion space formed within a ceramic part fixed to a metal piston head the material being a porous medium, e.g. sintered metal
-
- 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
- F02B23/0603—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 at least part of the interior volume or the wall of the combustion space being made of material different from the surrounding piston part, e.g. combustion space formed within a ceramic part fixed to a metal piston head
- F02B2023/0612—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 at least part of the interior volume or the wall of the combustion space being made of material different from the surrounding piston part, e.g. combustion space formed within a ceramic part fixed to a metal piston head the material having a high temperature and pressure resistance, e.g. ceramic
-
- 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
- F02B23/0618—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 having in-cylinder means to influence the charge motion
- F02B23/0621—Squish flow
-
- 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
-
- 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
- F02F2200/00—Manufacturing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2201/00—Metals
- F05C2201/02—Light metals
- F05C2201/021—Aluminium
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2251/00—Material properties
- F05C2251/04—Thermal properties
- F05C2251/048—Heat transfer
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Description
前記キャビティ部を有し、Al純度99.0%未満のAl合金製のピストンを準備するピストン準備ステップと、
前記キャビティ部の表面の全域に、Al純度99.0%以上のAl皮膜を形成するAl皮膜形成ステップと、
前記Al皮膜の形成後、前記ピストン頂面の陽極酸化処理により、細孔を有する陽極酸化皮膜を前記ピストン頂面の全域に形成する陽極酸化皮膜形成ステップと、
前記陽極酸化皮膜の形成後、前記ピストン頂面のうちの前記キャビティ部よりも外側に、前記陽極酸化皮膜の細孔を封じる封孔皮膜を形成する封孔皮膜形成ステップと、
を備えることを特徴とする。
前記Al皮膜形成ステップは、前記Al皮膜を所定厚に形成するステップであり、
前記陽極酸化皮膜形成ステップは、前記所定厚に形成した前記Al皮膜よりも内側のAl合金が陽極酸化されないような条件で前記ピストン頂面を陽極酸化処理するステップであることを特徴とする。
前記Al皮膜形成ステップは、前記Al皮膜を所定厚に形成するステップであり、
前記ピストン準備ステップと、前記Al皮膜形成ステップとの間に、前記所定厚の分だけ前記キャビティ部の表面を内側に研削する研削ステップを更に備えることを特徴とする。
前記直噴式エンジンがディーゼルエンジンであることを特徴とする。
図1は、直噴式エンジンのピストンの製造方法の実施の形態を説明するフロー図である。本実施の形態では、先ず、直噴式エンジンのピストンとしてディーゼルエンジンのピストンが準備される(ステップS1)。図2は、ディーゼルエンジンのピストン10の斜視図である。ピストン10は、一般的なエンジンピストン同様、Al合金の鋳造により形成されるものである。図2に示すように、ピストン10は、シリンダブロック(図示しない)の内面にその側面が摺接する円筒状のスカート部12と、スカート部12の上端部に形成された所定肉厚の冠部14と、ピストンピン(図示しない)を支持するピンボス部16と、から構成されている。
また、ステップS2が上記第3の発明における「研削ステップ」に相当している。
図10は、図1のフローにより製造したピストンを組み込んだ直噴式エンジンの断面模式図である。図10は図2のA−A断面に対応しており、図10においてピストン10は圧縮上死点に位置している。図10に示すように、スキッシュ部26の表面には遮熱膜34が形成され、キャビティ部20の表面には遮熱膜36が形成されている。
14 冠部
14a 外縁
20 キャビティ部
20a 開口縁
22 側壁部
24 山部
26 スキッシュ部
28,30 アルマイト膜
28a,30a ナノ孔
28b,30b ミクロ孔
28c,30c 凹部
32 封孔皮膜
34,36 遮熱膜
38 噴射弁
Claims (4)
- ピストン頂面に凹状に形成されたキャビティ部に燃料を直接噴射する直噴式エンジンのピストンの製造方法であって、
前記キャビティ部を有し、Al純度99.0%未満のAl合金製のピストンを準備するピストン準備ステップと、
前記キャビティ部の表面の全域に、Al純度99.0%以上のAl皮膜を形成するAl皮膜形成ステップと、
前記Al皮膜の形成後、前記ピストン頂面の陽極酸化処理により、細孔を有する陽極酸化皮膜を前記ピストン頂面の全域に形成する陽極酸化皮膜形成ステップと、
前記陽極酸化皮膜の形成後、前記ピストン頂面のうちの前記キャビティ部よりも外側に、前記陽極酸化皮膜の細孔を封じる封孔皮膜を形成する封孔皮膜形成ステップと、
を備えることを特徴とする直噴式エンジンのピストンの製造方法。 - 前記Al皮膜形成ステップは、前記Al皮膜を所定厚に形成するステップであり、
前記陽極酸化皮膜形成ステップは、前記所定厚に形成した前記Al皮膜よりも内側のAl合金が陽極酸化されないような条件で前記ピストン頂面を陽極酸化処理するステップであることを特徴とする請求項1に記載の直噴式エンジンのピストンの製造方法。 - 前記Al皮膜形成ステップは、前記Al皮膜を所定厚に形成するステップであり、
前記ピストン準備ステップと、前記Al皮膜形成ステップとの間に、前記所定厚の分だけ前記キャビティ部の表面を内側に研削する研削ステップを更に備えることを特徴とする請求項1または2に記載の直噴式エンジンのピストンの製造方法。 - 前記直噴式エンジンがディーゼルエンジンであることを特徴とする請求項1乃至3何れか1項に記載の直噴式エンジンのピストンの製造方法。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
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JP2014163583A JP6260492B2 (ja) | 2014-08-11 | 2014-08-11 | 直噴式エンジンのピストンの製造方法 |
EP15739687.0A EP3180462B1 (en) | 2014-08-11 | 2015-06-16 | Method for manufacturing piston for direct injection engine |
PCT/JP2015/002998 WO2016024376A1 (en) | 2014-08-11 | 2015-06-16 | Method for manufacturing piston for direct injection engine |
CN201580043125.5A CN106661756B (zh) | 2014-08-11 | 2015-06-16 | 用于制造用于直喷式发动机的活塞的方法 |
US15/318,006 US9932929B2 (en) | 2014-08-11 | 2015-06-16 | Method for manufacturing piston for direct injection engine |
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JP2014163583A JP6260492B2 (ja) | 2014-08-11 | 2014-08-11 | 直噴式エンジンのピストンの製造方法 |
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JP2016037660A JP2016037660A (ja) | 2016-03-22 |
JP6260492B2 true JP6260492B2 (ja) | 2018-01-17 |
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US (1) | US9932929B2 (ja) |
EP (1) | EP3180462B1 (ja) |
JP (1) | JP6260492B2 (ja) |
CN (1) | CN106661756B (ja) |
WO (1) | WO2016024376A1 (ja) |
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JP6274146B2 (ja) | 2015-04-17 | 2018-02-07 | トヨタ自動車株式会社 | 遮熱膜の形成方法および遮熱膜構造 |
KR20170127903A (ko) * | 2016-05-13 | 2017-11-22 | 현대자동차주식회사 | 인서트 주조용 실린더 라이너 및 그 제조 방법 |
DE102017207589A1 (de) * | 2017-05-05 | 2018-11-08 | Federal-Mogul Nürnberg GmbH | Thermisch isolierende Beschichtung für einen Aluminiumkolben |
JP6914207B2 (ja) | 2018-01-12 | 2021-08-04 | グローブライド株式会社 | 魚釣用リールの構成部材の製造方法 |
JP2019143497A (ja) * | 2018-02-16 | 2019-08-29 | トヨタ自動車株式会社 | 圧縮自着火式内燃機関 |
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FR2596808B1 (fr) * | 1986-04-04 | 1989-11-17 | Rech Machines Thermiqu Centre | Piston de moteur diesel a injection directe |
JP3467882B2 (ja) * | 1994-12-27 | 2003-11-17 | いすゞ自動車株式会社 | ピストン |
JP2000008858A (ja) * | 1998-06-17 | 2000-01-11 | Toyota Autom Loom Works Ltd | 直噴式エンジン及びそのピストン |
DE19960646A1 (de) * | 1999-12-16 | 2001-07-05 | Fed Mogul Deutschland Gmbh | Verfahren zur Herstellung einer hochbelastbaren Oberflächenschicht auf Bauteilen aus siliziumhaltigen Aluminiumlegierungen |
JP2004044468A (ja) * | 2002-07-11 | 2004-02-12 | Aisan Ind Co Ltd | エンジンの燃焼室構造 |
JP2004279169A (ja) * | 2003-03-14 | 2004-10-07 | Seiko Instruments Inc | 装飾品及び時計 |
US7458358B2 (en) * | 2006-05-10 | 2008-12-02 | Federal Mogul World Wide, Inc. | Thermal oxidation protective surface for steel pistons |
JP5696351B2 (ja) * | 2009-04-15 | 2015-04-08 | トヨタ自動車株式会社 | エンジン燃焼室構造 |
JP2011220207A (ja) * | 2010-04-08 | 2011-11-04 | Toyota Motor Corp | 内燃機関およびピストン作製方法 |
JP5315308B2 (ja) * | 2010-08-25 | 2013-10-16 | トヨタ自動車株式会社 | 内燃機関とその製造方法 |
JP5707826B2 (ja) | 2010-09-30 | 2015-04-30 | マツダ株式会社 | アルミ合金製品の断熱構造 |
JP5673160B2 (ja) * | 2011-02-02 | 2015-02-18 | トヨタ自動車株式会社 | 内燃機関とその製造方法 |
JP5607582B2 (ja) * | 2011-07-06 | 2014-10-15 | トヨタ自動車株式会社 | エンジンバルブの製造方法 |
JP5718774B2 (ja) * | 2011-09-20 | 2015-05-13 | トヨタ自動車株式会社 | ピストン |
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WO2016024376A1 (en) | 2016-02-18 |
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EP3180462B1 (en) | 2018-07-18 |
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JP2016037660A (ja) | 2016-03-22 |
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