JPH0419620U - - Google Patents
Info
- Publication number
- JPH0419620U JPH0419620U JP6107990U JP6107990U JPH0419620U JP H0419620 U JPH0419620 U JP H0419620U JP 6107990 U JP6107990 U JP 6107990U JP 6107990 U JP6107990 U JP 6107990U JP H0419620 U JPH0419620 U JP H0419620U
- Authority
- JP
- Japan
- Prior art keywords
- chamber
- sub
- heat spot
- diesel engine
- wall
- 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
- 239000000446 fuel Substances 0.000 claims description 5
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 229910010293 ceramic material Inorganic materials 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Combustion Methods Of Internal-Combustion Engines (AREA)
Description
第１図はこの考案によるデイーゼルエンジンの
副室構造の一実施例を示す説明図、第２図は第１
図の副室構造に設けた燃料噴射ノズルの一例を示
す説明図、第３図は第１図の副室構造に設けたヒ
ートスポツトの一例を示す断面図、第４図は第１
図の副室構造に設けたヒートスポツトの別の例を
示す断面図、及び第５図は従来のデイーゼルエン
ジンの副室構造の一例を示す説明図である。
１……主室、２……副室、３……シリンダヘツ
ド、４……燃料噴射ノズル、５，８……ヒートス
ポツト、５Ｐ……プレート部（非接触面積を大き
く形成した部分）、５Ｓ……ステム部（接触面積
を小さく形成した部分）、８Ｐ……取付用プラグ
、９……連絡孔、１０……壁体、１２……主噴孔
、１３……副噴孔。
Figure 1 is an explanatory diagram showing one embodiment of the pre-chamber structure of a diesel engine according to this invention, and Figure 2 is an explanatory diagram showing an example of the subchamber structure of a diesel engine according to this invention.
An explanatory diagram showing an example of a fuel injection nozzle provided in the subchamber structure shown in the figure, FIG. 3 is a sectional view showing an example of a heat spot provided in the subchamber structure shown in FIG.
FIG. 5 is a sectional view showing another example of a heat spot provided in the subchamber structure shown in the figure, and FIG. 5 is an explanatory view showing an example of the subchamber structure of a conventional diesel engine. 1...Main chamber, 2...Sub-chamber, 3...Cylinder head, 4...Fuel injection nozzle, 5, 8...Heat spot, 5P...Plate portion (portion with a large non-contact area), 5S ... Stem portion (portion formed with a small contact area), 8P ... Mounting plug, 9 ... Communication hole, 10 ... Wall body, 12 ... Main nozzle hole, 13 ... Sub-nozzle hole.
Claims (1)
て主室に連通する副室、該副室内で直ちに高温に
なり且つ前記副室を構成する壁体への熱流を抑制
した前記副室内に突出したヒートスポツト、及び
該ヒートスポツトに燃料を衝突噴射する副噴孔と
前記副室内に発生するスワール中に燃料を噴射す
る主噴孔とを備えた燃料噴射ノズル、を有するデ
イーゼルエンジンの副室構造。 (2) 前記ヒートスポツトは、セラミツク材料か
ら成り、且つ前記副室内に位置する前記壁体との
非接触面積を大きく形成した部分と前記壁体への
取付部の接触面積を小さく形成した部分から構成
されている請求項１に記載のデイーゼルエンジン
の副室構造。 (3) 前記ヒートスポツトを熱伝導率の低いセラ
ミツク材料から製作し、前記壁体に取外し可能な
取付用プラグに前記ヒートスポツトを埋め込んで
固定した請求項１に記載のデイーゼルエンジンの
副室構造。[Claims for Utility Model Registration] (1) A sub-chamber formed in the cylinder head and communicating with the main chamber through a communication hole, which quickly becomes hot in the sub-chamber and suppresses heat flow to the wall forming the sub-chamber. a heat spot protruding into the auxiliary chamber, and a fuel injection nozzle including a auxiliary injection hole for colliding and injecting fuel into the heat spot and a main injection hole for injecting fuel into a swirl generated in the auxiliary chamber. Diesel engine pre-chamber structure. (2) The heat spot is made of ceramic material, and includes a portion that has a large non-contact area with the wall located in the sub-chamber and a portion that has a small contact area with the attachment portion to the wall. The pre-chamber structure of a diesel engine according to claim 1, wherein (3) The pre-chamber structure for a diesel engine according to claim 1, wherein the heat spot is made of a ceramic material with low thermal conductivity, and the heat spot is embedded and fixed in a removable attachment plug in the wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990061079U JP2524156Y2 (en) | 1990-06-08 | 1990-06-08 | Diesel engine subchamber structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990061079U JP2524156Y2 (en) | 1990-06-08 | 1990-06-08 | Diesel engine subchamber structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0419620U true JPH0419620U (en) | 1992-02-19 |
| JP2524156Y2 JP2524156Y2 (en) | 1997-01-29 |
Family
ID=31589011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990061079U Expired - Lifetime JP2524156Y2 (en) | 1990-06-08 | 1990-06-08 | Diesel engine subchamber structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2524156Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61105720U (en) * | 1984-12-17 | 1986-07-04 |
-
1990
- 1990-06-08 JP JP1990061079U patent/JP2524156Y2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61105720U (en) * | 1984-12-17 | 1986-07-04 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2524156Y2 (en) | 1997-01-29 |