JPH0332124U - - Google Patents
Info
- Publication number
- JPH0332124U JPH0332124U JP1989092912U JP9291289U JPH0332124U JP H0332124 U JPH0332124 U JP H0332124U JP 1989092912 U JP1989092912 U JP 1989092912U JP 9291289 U JP9291289 U JP 9291289U JP H0332124 U JPH0332124 U JP H0332124U
- Authority
- JP
- Japan
- Prior art keywords
- shape
- combustion chamber
- protrusion
- cone
- angle
- 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.)
- Granted
Links
- 238000002485 combustion reaction Methods 0.000 claims description 9
- 238000002347 injection Methods 0.000 claims description 7
- 239000007924 injection Substances 0.000 claims description 7
- 230000002093 peripheral effect Effects 0.000 claims 1
Landscapes
- Combustion Methods Of Internal-Combustion Engines (AREA)
Description
第１図は本考案に係る直噴式デイーゼルエンジ
ンの燃焼室形状の一実施例を示す断面図、第２図
は本考案に係る直噴式デイーゼルエンジンの燃焼
室の他の実施例を示す断面図、第３図は第２図の
燃焼室における燃焼室直径と面積との関係を示す
グラフ、第４図は従来の直噴式デイーゼルエンジ
ンの燃焼室の断面図である。
１…ピストン、２，２′…燃焼室、２′ｂ…底
アール部、３…突起、３ａ…突起下部、３ｂ…突
起上部、４…噴射ノズル。
FIG. 1 is a cross-sectional view showing one embodiment of the combustion chamber shape of a direct-injection diesel engine according to the present invention, and FIG. 2 is a cross-sectional view showing another example of the combustion chamber shape of a direct-injection diesel engine according to the present invention. FIG. 3 is a graph showing the relationship between the combustion chamber diameter and area in the combustion chamber of FIG. 2, and FIG. 4 is a sectional view of the combustion chamber of a conventional direct injection diesel engine. DESCRIPTION OF SYMBOLS 1...Piston, 2, 2'...Combustion chamber, 2'b...Bottom rounded part, 3...Protrusion, 3a...Protrusion lower part, 3b...Protrusion upper part, 4...Injection nozzle.
Claims (1)
中央が錐状に盛り上がる突起をなし、当該突起に
続く周縁部が円弧状をなして側壁室に連なる直噴
式デイーゼルエンジンの燃焼室形状において、前
記突起を大きく形成して下部を急峻に立上げると
共に上部を緩やかな円錐台形状に形成し、且つ当
該円錐台形の頂角を噴射ノズルのコーン角よりも
１０〜３０゜小さく設定し、燃焼室の側壁面と当
該側壁面に対向する前記突起の下部の斜面とのな
す角を０〜３０゜の範囲に設定したことを特徴と
する直噴式デイーゼルエンジンの燃焼室形状。 In the combustion chamber shape of a direct injection diesel engine, the center of the bottom surface of the circular recess formed at the top of the piston forms a protrusion that rises in the shape of a cone, and the peripheral edge following the protrusion forms an arc and is connected to the side wall chamber. The lower part is steeply raised, and the upper part is formed into a gentle truncated cone shape, and the apex angle of the truncated cone is set to be 10 to 30 degrees smaller than the cone angle of the injection nozzle, and the side of the combustion chamber is A combustion chamber shape for a direct injection diesel engine, characterized in that an angle between a wall surface and a slope of a lower part of the protrusion facing the side wall surface is set in a range of 0 to 30 degrees.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989092912U JP2571792Y2 (en) | 1989-08-09 | 1989-08-09 | Combustion chamber shape of direct injection diesel engine |
| US07/564,158 US5099809A (en) | 1989-08-09 | 1990-08-08 | Combustion chamber for a diesel engine |
| DE69007899T DE69007899T2 (en) | 1989-08-09 | 1990-08-09 | Combustion chamber for a diesel engine. |
| EP90115335A EP0412552B1 (en) | 1989-08-09 | 1990-08-09 | Combustion chamber for a Diesel engine |
| KR1019900012247A KR940006054B1 (en) | 1989-08-09 | 1990-08-09 | Combustion chamber for a diesel engine |
| DE199090115335T DE412552T1 (en) | 1989-08-09 | 1990-08-09 | COMBUSTION ROOM FOR DIESEL INTERNAL COMBUSTION ENGINE. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989092912U JP2571792Y2 (en) | 1989-08-09 | 1989-08-09 | Combustion chamber shape of direct injection diesel engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0332124U true JPH0332124U (en) | 1991-03-28 |
| JP2571792Y2 JP2571792Y2 (en) | 1998-05-18 |
Family
ID=31642322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989092912U Expired - Lifetime JP2571792Y2 (en) | 1989-08-09 | 1989-08-09 | Combustion chamber shape of direct injection diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2571792Y2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010077968A (en) * | 2008-09-24 | 2010-04-08 | Deere & Co | Internal combustion engine with high squish piston |
| JP2011506847A (en) * | 2007-12-19 | 2011-03-03 | ルノー・エス・アー・エス | Combustion engine combustion chamber |
| JP2013515198A (en) * | 2009-12-22 | 2013-05-02 | パーキンズ エンジンズ カンパニー リミテッド | Piston for internal combustion engine |
| WO2013154004A1 (en) * | 2012-04-10 | 2013-10-17 | いすゞ自動車株式会社 | Combustion chamber structure for direct injection engine |
| CN106414943A (en) * | 2014-05-22 | 2017-02-15 | 日产自动车株式会社 | Combustion chamber structure for diesel engine |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2925604A1 (en) * | 2007-12-19 | 2009-06-26 | Renault Sas | COMBUSTION CHAMBER FOR THERMAL MOTOR WITH DIRECT OVERFLOW INJECTION |
| JP4924702B2 (en) * | 2009-12-01 | 2012-04-25 | トヨタ自動車株式会社 | Direct injection compression ignition engine |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5650214A (en) * | 1979-09-29 | 1981-05-07 | Mitsubishi Heavy Ind Ltd | Combustion chamber of internal combustion engine |
| JPS63162925A (en) * | 1986-12-12 | 1988-07-06 | アー・ファウ・エル ゲゼルシャフト フィア フェアブレヌングスクラフトマシーネン ウント メステヒニク エム・ベー・ハー プロフェッサー・ドクター・ドクター・ハー・ツェー・ハンス・リスト | Pneumatic compression type valve control internal combustion engine |
-
1989
- 1989-08-09 JP JP1989092912U patent/JP2571792Y2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5650214A (en) * | 1979-09-29 | 1981-05-07 | Mitsubishi Heavy Ind Ltd | Combustion chamber of internal combustion engine |
| JPS63162925A (en) * | 1986-12-12 | 1988-07-06 | アー・ファウ・エル ゲゼルシャフト フィア フェアブレヌングスクラフトマシーネン ウント メステヒニク エム・ベー・ハー プロフェッサー・ドクター・ドクター・ハー・ツェー・ハンス・リスト | Pneumatic compression type valve control internal combustion engine |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011506847A (en) * | 2007-12-19 | 2011-03-03 | ルノー・エス・アー・エス | Combustion engine combustion chamber |
| JP2010077968A (en) * | 2008-09-24 | 2010-04-08 | Deere & Co | Internal combustion engine with high squish piston |
| JP2013515198A (en) * | 2009-12-22 | 2013-05-02 | パーキンズ エンジンズ カンパニー リミテッド | Piston for internal combustion engine |
| WO2013154004A1 (en) * | 2012-04-10 | 2013-10-17 | いすゞ自動車株式会社 | Combustion chamber structure for direct injection engine |
| CN106414943A (en) * | 2014-05-22 | 2017-02-15 | 日产自动车株式会社 | Combustion chamber structure for diesel engine |
| JPWO2015177897A1 (en) * | 2014-05-22 | 2017-04-20 | 日産自動車株式会社 | Diesel engine combustion chamber structure |
| US9938887B2 (en) | 2014-05-22 | 2018-04-10 | Nissan Motor Co., Ltd. | Combustion chamber structure for diesel engine |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2571792Y2 (en) | 1998-05-18 |