JPH0332123U - - Google Patents
Info
- Publication number
- JPH0332123U JPH0332123U JP9148389U JP9148389U JPH0332123U JP H0332123 U JPH0332123 U JP H0332123U JP 9148389 U JP9148389 U JP 9148389U JP 9148389 U JP9148389 U JP 9148389U JP H0332123 U JPH0332123 U JP H0332123U
- Authority
- JP
- Japan
- Prior art keywords
- chamber
- partition wall
- range
- angle
- dividing
- 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
- 238000005192 partition Methods 0.000 claims description 5
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 230000000630 rising effect Effects 0.000 claims description 2
- 230000007423 decrease Effects 0.000 claims 1
- 239000000446 fuel Substances 0.000 description 2
- 239000000779 smoke Substances 0.000 description 1
Landscapes
- Combustion Methods Of Internal-Combustion Engines (AREA)
Description
第１図は本考案を適用したデイーゼルエンジン
の副室の形状の一実施例を示す要部断面図、第２
図は第１図に示す形状の副室側の立ち上り角部の
角度θ３を、隔壁の底面と噴孔内面の下側の母線
とのなす角θ２で割つた値θ３／θ１に対する燃
費及び煙濃度の関係を示すグラフである。
１…シリンダヘツド、２…渦流室（副室）、２
ａ…円筒部、２ｂ…半球部、２ｃ…側壁、３…主
室、４…隔壁、５…噴孔、６…燃料噴射ノズル、
７…グロープラグ。
Fig. 1 is a cross-sectional view of main parts showing an example of the shape of the pre-chamber of a diesel engine to which the present invention is applied;
The figure shows the value θ 3 /θ 1 obtained by dividing the angle θ 3 of the rising corner on the sub-chamber side of the shape shown in Figure 1 by the angle θ 2 formed by the bottom surface of the partition wall and the lower generatrix of the inner surface of the nozzle hole. It is a graph showing the relationship between fuel efficiency and smoke concentration. 1...Cylinder head, 2...Swirl chamber (auxiliary chamber), 2
a... Cylindrical part, 2b... Hemispherical part, 2c... Side wall, 3... Main chamber, 4... Partition wall, 5... Nozzle hole, 6... Fuel injection nozzle,
7...Glow plug.
Claims (1)
下部を円筒状に形成し、当該副室と主室とを画成
する隔壁に、主室から副室に向かつて傾斜し且つ
、縮径する円錐形状の噴孔を形成し、前記隔壁の
前記副室側の立上り角部の角度θ３を当該隔壁の
底面と前記噴孔内面の下側の母線の底面とのなす
角θ２で割つた値θ３／θ２を１．０〜１．５の
範囲に設定し、前記噴孔内面の上側、下側の各母
線の延長線が前記副室の円筒部の壁面と交わる点
から半球部の開始点までの各距離ｌ１，ｌ２を当
該半球部の半径Ｒで割つた値ｌ１／Ｒ，ｌ２／Ｒ
を、ｌ１／Ｒ＝０．３〜０．６の範囲に、ｌ２／
Ｒ＝０．５〜０．７の範囲に設定したことを特徴
とするデイーゼルエンジンの副室の形状。 The auxiliary chamber of a diesel engine is formed into a hemispherical upper part and a cylindrical lower part, and a partition wall that separates the auxiliary chamber and the main chamber has a conical shape that slopes and decreases in diameter from the main chamber to the auxiliary chamber. A value obtained by dividing the angle θ 3 of the rising corner of the partition wall on the sub-chamber side by the angle θ 2 between the bottom surface of the partition wall and the bottom surface of the lower generatrix of the inner surface of the injection hole. θ 3 /θ 2 is set in the range of 1.0 to 1.5, and the hemispherical part is measured from the point where the extension lines of the upper and lower generating lines of the inner surface of the nozzle intersect with the wall surface of the cylindrical part of the subchamber. Values l 1 /R, l 2 /R obtained by dividing each distance l 1 and l 2 to the starting point by the radius R of the hemisphere
in the range of l 1 /R=0.3 to 0.6, l 2 /R
The shape of a pre-chamber of a diesel engine is characterized in that R is set in the range of 0.5 to 0.7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9148389U JPH0332123U (en) | 1989-08-04 | 1989-08-04 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9148389U JPH0332123U (en) | 1989-08-04 | 1989-08-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0332123U true JPH0332123U (en) | 1991-03-28 |
Family
ID=31640961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9148389U Pending JPH0332123U (en) | 1989-08-04 | 1989-08-04 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0332123U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007251375A (en) * | 2006-03-14 | 2007-09-27 | Futaba Corp | Antenna extracting mechanism for wireless transmitter |
-
1989
- 1989-08-04 JP JP9148389U patent/JPH0332123U/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007251375A (en) * | 2006-03-14 | 2007-09-27 | Futaba Corp | Antenna extracting mechanism for wireless transmitter |
| JP4531001B2 (en) * | 2006-03-14 | 2010-08-25 | 双葉電子工業株式会社 | Radio transmitter antenna extraction mechanism |