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Effect of Shape of Discharge Valve on the Cut-off of Fuel Spray in Injection Systems with Open Nozzles.
https://jaxa.repo.nii.ac.jp/records/35504
https://jaxa.repo.nii.ac.jp/records/355047d64d795-82dc-45de-9f2e-90833fc0395e
名前 / ファイル | ライセンス | アクション |
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SA4148267.pdf (1.0 MB)
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Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
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公開日 | 2015-03-26 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Effect of Shape of Discharge Valve on the Cut-off of Fuel Spray in Injection Systems with Open Nozzles. | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | departmental bulletin paper | |||||
その他のタイトル | ||||||
その他のタイトル | オープン・ノッズルを用ふる噴射系統に於ける放出弁の形と噴射の切れ方に就て | |||||
著者 |
中西, 不二夫
× 中西, 不二夫× 伊藤, 正治× 北村, 菊男× NAKANISHI, Fujio× ITO, Masaharu× KITAMURA, Kikuo |
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出版者 | ||||||
出版者 | 東京帝國大學航空研究所 | |||||
出版者(英) | ||||||
出版者 | Aeronautical Research Institute, Tokyo Imperial University | |||||
書誌情報 |
東京帝國大學航空研究所報告 en : Report of Aeronautical Research Institute, Tokyo Imperial University 巻 9, 号 114, p. 139-157, 発行日 1934-11 |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | オープン・ノッズルを用ふる普通の噴射系統では,燃料ポンプから放出弁を通つて出て來た燃料油は或る長さの導管を經てノッズルに達するやうになつてゐるが,この放出弁の有無,有ればその形が噴射の切れ方に大きな影響を及ぼすので,この影響を調べてみた.導管が或る程度以上に細いと,燃料ポンプで油壓を切つても,燃料油はその慣性のためになほ流れを止めないで,放出弁の上側に眞空を殘すことになる.この場合には放出弁の形の影響はない筈である.幾分太い導管を用ひるときに放出弁の形の影響が強く表れる.普通の形の放出弁ではノッズルに於ける壓力は階段状に下り,Bosch型の放出弁では極めて激しい振動が起り,放出弁を取り去り,その代り逆止弁をノッズルのところに置いたものでは鋭く切れる筈である.實驗の結果も予想の通りである.たゞBosch型の弁を用ひた場合には導管内の油の運動が激しいので減衰作用も相當強く効いて,そのために適當の太さの導管を用ひると二次噴射が消えてしまふことがある.然しこの場合にも噴射壓力を少し高くすると,また二次噴射が出て來る. | |||||
抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | In an ordinary injection system with open nozzles, the fuel oil discharged from the fuel pump through a discharge valve arrives at the nozzle after passing through an injection pipe of certain length. This paper discusses the effect of shape of discharge valve on the cut-off of fuel spray in such a system. Experiments showed that, with an injection pipe of large bore and a discharge valve of ordinary type, the pressure time curve after the cut-off assumes a steplike form, and also that with a discharge valve of the Bosch type, the pressure varies violently, whereas if the discharge valve is removed from the pump and replaced with a non-return valve at the nozzle, a sharp cut-off is obtained. The same result may be obtained with an injection pipe of proper size and a discharge valve of the Bosch type. In this case, however, a secondary discharge will take place with a slight rise of oil pressure. With an injection pipe of very small bore, the cut-off will not be affected at all by the shape of the discharge valve. | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA00387631 | |||||
資料番号 | ||||||
内容記述タイプ | Other | |||||
内容記述 | 資料番号: SA4148267000 |