JPS58130025U - Direct fuel injection diesel engine piston - Google Patents
Direct fuel injection diesel engine pistonInfo
- Publication number
- JPS58130025U JPS58130025U JP168683U JP168683U JPS58130025U JP S58130025 U JPS58130025 U JP S58130025U JP 168683 U JP168683 U JP 168683U JP 168683 U JP168683 U JP 168683U JP S58130025 U JPS58130025 U JP S58130025U
- Authority
- JP
- Japan
- Prior art keywords
- fuel injection
- piston
- diesel engine
- direct fuel
- injection diesel
- 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
Landscapes
- Combustion Methods Of Internal-Combustion Engines (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は従来の直接燃料噴射式ディーゼル機関のピスト
ンを示す断面図、第２図は本考案による１実施例のピス
トンを示す断面図、第３図は第２図のピストンの上面図
、第４図は口金取付部を拡大して示す断面図、第５図は
燃焼速度の変化を示す線図、第６図より第８図まではそ
れぞれ口金形状の他の実施例を示す断面図、第９図は噴
孔数より口金数を減らした場合の１実施例を示すピスト
ンの上面図である。
＝１．１’、１“、１′′′・・・ピストンクラウン、
２・・・ピストンボデー、３．３’、３“、３″・・・
口金、３ａ・・・電子ビーム溶接部、５・・・噴射ノイ
ル、６・・・ねじ部、Ｓ・・・スワール、３１．３１’
、３２″、５３２″・・・凹陥部。FIG. 1 is a sectional view showing a piston of a conventional direct fuel injection diesel engine, FIG. 2 is a sectional view showing a piston according to an embodiment of the present invention, and FIG. 3 is a top view of the piston shown in FIG. Figure 4 is an enlarged cross-sectional view of the mouthpiece mounting part, Figure 5 is a diagram showing changes in combustion rate, Figures 6 to 8 are cross-sectional views showing other examples of the shape of the mouthpiece, respectively. FIG. 9 is a top view of a piston showing an embodiment in which the number of nozzles is smaller than the number of nozzle holes. =1.1', 1", 1'''...piston crown,
2... Piston body, 3.3', 3", 3"...
Base, 3a... Electron beam welding part, 5... Injection noil, 6... Threaded part, S... Swirl, 31.31'
, 32'', 532''...concave portion.
Claims (1)
中に燃料噴射ノズルにより直接燃料を噴射し着火燃焼さ
せる直接燃料噴射式ディーゼル機関において、上記ピス
トンとは別体の耐熱性合金からなり上記キャビティーの
壁部に固着されると共に少なくとも底部外周面がピスト
ンの冷却室内に臨んだ旧金内に、上記キャビティーの壁
面に上記燃料噴射ノズルの噴孔の噴射方向に対向して形
成され上記噴孔より噴射される噴霧の中心部を受容する
凹陥部を備えたことを特徴とする直接燃料噴射式ディー
ゼル機関のピストン。In a direct fuel injection diesel engine in which fuel is directly injected by a fuel injection nozzle into pressurized air in a cavity formed on the upper surface of the piston and ignited, the cavity is made of a heat-resistant alloy separate from the piston. The injection hole is formed on the wall surface of the cavity to face the injection direction of the nozzle hole of the fuel injection nozzle, and is fixed to the wall of the tee and has at least the outer peripheral surface of the bottom facing into the cooling chamber of the piston. A piston for a direct fuel injection diesel engine, characterized by having a concave portion that receives the center of the spray injected from the hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP168683U JPS5924820Y2 (en) | 1983-01-12 | 1983-01-12 | Direct fuel injection diesel engine piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP168683U JPS5924820Y2 (en) | 1983-01-12 | 1983-01-12 | Direct fuel injection diesel engine piston |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58130025U true JPS58130025U (en) | 1983-09-02 |
| JPS5924820Y2 JPS5924820Y2 (en) | 1984-07-23 |
Family
ID=30014692
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP168683U Expired JPS5924820Y2 (en) | 1983-01-12 | 1983-01-12 | Direct fuel injection diesel engine piston |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5924820Y2 (en) |
-
1983
- 1983-01-12 JP JP168683U patent/JPS5924820Y2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5924820Y2 (en) | 1984-07-23 |
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