JP2022110734A - 内燃機関 - Google Patents
内燃機関 Download PDFInfo
- Publication number
- JP2022110734A JP2022110734A JP2021006330A JP2021006330A JP2022110734A JP 2022110734 A JP2022110734 A JP 2022110734A JP 2021006330 A JP2021006330 A JP 2021006330A JP 2021006330 A JP2021006330 A JP 2021006330A JP 2022110734 A JP2022110734 A JP 2022110734A
- Authority
- JP
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- Prior art keywords
- injection hole
- injection
- piston
- cylinder
- holes
- 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.)
- Pending
Links
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 30
- 238000002347 injection Methods 0.000 claims abstract description 280
- 239000007924 injection Substances 0.000 claims abstract description 280
- 239000000446 fuel Substances 0.000 claims abstract description 46
- 238000000034 method Methods 0.000 claims description 2
- 239000004071 soot Substances 0.000 abstract description 7
- 239000000243 solution Substances 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Images
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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
- F02M61/1806—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for characterised by the arrangement of discharge orifices, e.g. orientation or size
- F02M61/1826—Discharge orifices having different sizes
-
- 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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/14—Arrangements of injectors with respect to engines; Mounting of injectors
-
- 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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
- F02M61/1806—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for characterised by the arrangement of discharge orifices, e.g. orientation or size
- F02M61/1813—Discharge orifices having different orientations with respect to valve member direction of movement, e.g. orientations being such that fuel jets emerging from discharge orifices collide with each other
-
- 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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
- F02M61/1806—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for characterised by the arrangement of discharge orifices, e.g. orientation or size
- F02M61/182—Discharge orifices being situated in different transversal planes with respect to valve member direction of movement
-
- 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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
- F02M61/1806—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for characterised by the arrangement of discharge orifices, e.g. orientation or size
- F02M61/184—Discharge orifices having non circular sections
-
- 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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
- F02M61/1806—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for characterised by the arrangement of discharge orifices, e.g. orientation or size
- F02M61/1846—Dimensional characteristics of discharge orifices
-
- 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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/14—Arrangements of injectors with respect to engines; Mounting of injectors
- F02M61/145—Arrangements of injectors with respect to engines; Mounting of injectors the injection nozzle opening into the air intake conduit
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
- Combustion Methods Of Internal-Combustion Engines (AREA)
Abstract
Description
[数式]
Xi=Li/D ・・・式(1)
[数式]
Xd=Ld/D ・・・式(2)
図5は、本実施形態に係るエンジン1のインジェクタ10が備える第6噴孔126から噴射された燃料の流れを示す図である。また、図6は、従来一般的なエンジンのインジェクタが備える第6噴孔から噴射された燃料の流れを示す図である。なお、図6に示される従来一般的なエンジンのインジェクタは、第1噴孔~第6噴孔全て、吸気タンブル流の渦の中心よりも上方に燃料を噴射するものであり、各噴孔の噴孔径は全て同一である。
本実施形態では、インジェクタ10の複数の噴孔のうち、噴孔の軸線方向がピストン20側に最も偏向する第6噴孔126は、他の噴孔のいずれよりも大きな噴孔径を有するとともに、他の噴孔の噴孔径の合計値の20%以上に相当する噴孔径を有する構成とした。
本実施形態に係るインジェクタ10によれば、噴孔の軸線方向がピストン20側に最も偏向する第6噴孔126から、少なくとも縦方向の旋回を有する吸気タンブル流において流動の弱い渦の中心を狙って燃料を噴射することができることに加えて、噴孔の軸線方向がピストン20側に最も偏向するこの噴孔の噴孔径を、他の噴孔のいずれよりも大きな噴孔径とすることにより、燃料が渦の中心で停滞する結果、ピストン20への付着を抑制できる。ひいては、ピストン20に対する燃料の付着を抑制でき、煤の発生を抑制できる。
これにより、ピストン20に対する燃料の付着をより確実に抑制でき、煤の発生をより確実に抑制できる。
これにより、上述の効果に加えて、各噴孔から噴射される燃料の干渉を抑制できる。
2 シリンダブロック
3 シリンダヘッド
4 燃焼室
5 点火プラグ
10 インジェクタ
11 インジェクタ本体
12 ノズル
20 ピストン
30 気筒
31 側壁面
121 第1噴孔
122 第2噴孔
123 第3噴孔
124 第4噴孔
125 第5噴孔
126 第6噴孔
[数式]
Xd=Ld/D ・・・式(1)
[数式]
Xi=Li/D ・・・式(2)
Claims (3)
- ピストンと、前記ピストンを収容する気筒と、前記気筒の上方から前記気筒内に燃料を噴射する複数の噴孔が形成されたノズルを有するインジェクタと、を備える内燃機関であって、
前記複数の噴孔のうち、噴孔の軸線方向が前記ピストン側に最も偏向する噴孔は、他の噴孔のいずれよりも大きな噴孔径を有するとともに、前記他の噴孔の噴孔径の合計値の20%以上に相当する噴孔径を有する、内燃機関。 - 等角投影法による斜視において、前記他の噴孔はいずれも、各噴孔の中心から各噴孔の軸線方向に沿って延びて対向する前記気筒の側壁面に至る直線の距離を、各噴孔の噴孔径で除した値が545以上であるとともに、
平面視において、前記他の噴孔はいずれも、各噴孔の中心から各噴孔の軸線方向に沿って延びて対向する前記気筒の側壁面に至る直線の距離を、各噴孔の噴孔径で除した値が393以上である、請求項1に記載の内燃機関。 - 前記複数の噴孔は、
前記複数の噴孔のうち最上部に配置される第1噴孔と、
前記複数の噴孔のうち最下部に配置され、噴孔の軸線方向が前記ピストン側に最も偏向する噴孔を構成する第6噴孔と、
前記第1噴孔の中心と前記第6噴孔の中心とを通る中心線に対して互いに対称な位置で前記第1噴孔側に配置される第2噴孔及び第3噴孔と、
前記中心線に対して互いに対称な位置で前記第6噴孔側に配置される第4噴孔及び第5噴孔と、を有し、
前記第2噴孔及び前記第3噴孔は、前記第1噴孔、前記第4噴孔及び前記第5噴孔いずれよりも噴孔径が小さい、請求項1又は2に記載の内燃機関。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2021006330A JP2022110734A (ja) | 2021-01-19 | 2021-01-19 | 内燃機関 |
US17/577,391 US11530672B2 (en) | 2021-01-19 | 2022-01-18 | Internal combustion engine |
CN202210059349.7A CN114810444B (zh) | 2021-01-19 | 2022-01-19 | 内燃机 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2021006330A JP2022110734A (ja) | 2021-01-19 | 2021-01-19 | 内燃機関 |
Publications (1)
Publication Number | Publication Date |
---|---|
JP2022110734A true JP2022110734A (ja) | 2022-07-29 |
Family
ID=82405008
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2021006330A Pending JP2022110734A (ja) | 2021-01-19 | 2021-01-19 | 内燃機関 |
Country Status (3)
Country | Link |
---|---|
US (1) | US11530672B2 (ja) |
JP (1) | JP2022110734A (ja) |
CN (1) | CN114810444B (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20220282684A1 (en) * | 2016-08-26 | 2022-09-08 | Transportation Ip Holdings, Llc | Methods and system for controlling fuel injectors of an engine |
Family Cites Families (42)
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-
2021
- 2021-01-19 JP JP2021006330A patent/JP2022110734A/ja active Pending
-
2022
- 2022-01-18 US US17/577,391 patent/US11530672B2/en active Active
- 2022-01-19 CN CN202210059349.7A patent/CN114810444B/zh active Active
Also Published As
Publication number | Publication date |
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CN114810444A (zh) | 2022-07-29 |
US11530672B2 (en) | 2022-12-20 |
CN114810444B (zh) | 2024-03-05 |
US20220228545A1 (en) | 2022-07-21 |
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