JPH0285827U - - Google Patents
Info
- Publication number
- JPH0285827U JPH0285827U JP16444888U JP16444888U JPH0285827U JP H0285827 U JPH0285827 U JP H0285827U JP 16444888 U JP16444888 U JP 16444888U JP 16444888 U JP16444888 U JP 16444888U JP H0285827 U JPH0285827 U JP H0285827U
- Authority
- JP
- Japan
- Prior art keywords
- combustion chamber
- fuel
- swirl
- diesel engine
- cavity
- 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 7
- 239000000446 fuel Substances 0.000 claims description 6
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Combustion Methods Of Internal-Combustion Engines (AREA)
Description
第１図は本考案の一実施例に係る直接式デイー
ゼルエンジンの燃焼室の断面図、第２図は第１図
の平面図、第３図は本考案と従来構造の燃焼室に
おける未燃ＨＣの発生量を比較した特性図、第４
図は従来の直接噴射式デイーゼルエンジンの燃焼
室の断面図、である。
１……シリンダブロツク、２……ピストン、４
……シリンダヘツド、５……燃料噴射ノズル、６
……キヤビテイ、１０……突起部、１１……スキ
ツシユエリア、Ｆ……噴射燃料、Ｓ１……低負荷
時のスワール、Ｓ２……高負荷時のスワール。
Fig. 1 is a sectional view of a combustion chamber of a direct diesel engine according to an embodiment of the present invention, Fig. 2 is a plan view of Fig. 1, and Fig. 3 shows unburned HC in the combustion chamber of the present invention and a conventional structure. Characteristic diagram comparing the amount of generation of
The figure is a sectional view of the combustion chamber of a conventional direct injection diesel engine. 1...Cylinder block, 2...Piston, 4
... Cylinder head, 5 ... Fuel injection nozzle, 6
...Cavity, 10...Protrusion, 11...Squeeze area, F...Injected fuel, S1 ...Swirl at low load, S2 ...Swirl at high load.
Claims (1)
部のキヤビテイの周縁近傍に向けて噴射されると
ともに、スワールが付与された吸気が流入する直
接噴射式デイーゼルエンジンの燃焼室において、
該燃焼室を形成するシリンダヘツドの壁面に、前
記キヤビテイの周縁より内側に位置し高負荷高回
転時のスワール状態よりも低負荷低回転時のスワ
ール状態で前記燃料噴射ノズルからの噴射燃料が
多く衝突する突起部を設けたことを特徴とする直
接噴射式デイーゼルエンジンの燃焼室。 In a combustion chamber of a direct injection diesel engine, fuel from a fuel injection nozzle is injected toward the vicinity of the periphery of a cavity at the top of a piston, and intake air with a swirl flows into the combustion chamber.
A wall surface of the cylinder head forming the combustion chamber is located inside the periphery of the cavity, and more fuel is injected from the fuel injection nozzle in a swirl state at low load and low rotation than in a swirl state at high load and high rotation. A combustion chamber of a direct injection diesel engine characterized by being provided with a colliding protrusion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988164448U JPH0723537Y2 (en) | 1988-12-21 | 1988-12-21 | Combustion chamber of direct injection diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988164448U JPH0723537Y2 (en) | 1988-12-21 | 1988-12-21 | Combustion chamber of direct injection diesel engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0285827U true JPH0285827U (en) | 1990-07-06 |
| JPH0723537Y2 JPH0723537Y2 (en) | 1995-05-31 |
Family
ID=31450064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988164448U Expired - Lifetime JPH0723537Y2 (en) | 1988-12-21 | 1988-12-21 | Combustion chamber of direct injection diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0723537Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014020278A (en) * | 2012-07-18 | 2014-02-03 | Hino Motors Ltd | Internal combustion engine |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5783230U (en) * | 1980-11-12 | 1982-05-22 |
-
1988
- 1988-12-21 JP JP1988164448U patent/JPH0723537Y2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5783230U (en) * | 1980-11-12 | 1982-05-22 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014020278A (en) * | 2012-07-18 | 2014-02-03 | Hino Motors Ltd | Internal combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0723537Y2 (en) | 1995-05-31 |