著者

寺尾 日出男 西村 弘行 松居 勝広

出版者

The Japanese Society of Agricultural Machinery and Food Engineers

雑誌

農業機械学会誌 (ISSN:02852543)

巻号頁・発行日

vol.45, no.3, pp.289-296, 1983 (Released:2010-04-30)

参考文献数

25

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道産品のハツカ草の揮発性精油がユーカリ油に近い性状であることを知り, 寒冷地植物ハツカ油の火花点火機関燃料としての適応性を検討している。第1報はハツカ油2種類―ペパーミント油およびスペアーミント油を―無鉛ガソリンに混合したブレンド燃料で機関で運転した結果, 1) ガソリンに対する気化器設定のままでは, 空気過剰率は希薄側へ移行する。その結果, ガソリン単味使用時に比べ, 見掛上, ハツカ油ブレンド燃料の方が軸出力・正味熱効率とも向上する結果が得られた。2) しかし, 同一の空気過剰率で比較した場合, ガソリン単味およびペパーミント単味の両者間には軸出力・正味熱効率とも全く差異は認められないことが判つた。

著者

常松 栄 吉田 富穂 松居 勝広

出版者

The Japanese Society of Agricultural Machinery and Food Engineers

雑誌

農業機械学会誌 (ISSN:02852543)

巻号頁・発行日

vol.17, no.2, pp.37-40, 1955-11-15 (Released:2010-04-30)

参考文献数

5

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The pulling performance of the tractors, which are well adapted to heavy duties, as soil-improvement work and reclamation work etc., should be determined with not only the drawbar horse power but the maximum drawbar pull and the increasing rate of slip causing by the draft.This paper contains the maximum drawbar pulls and the maximum specific drawbar pulls (The maximum drawbar pull/Total weights of tractor including fuel, oil, water and operater) characterized to the type of tractor-crawler, semi-crawler, and wheel-which were investigated in the different types of soils-dry or wet heavy clay soil, clay-loam and volcanic light sandy loam or gravelly soil. i. e.1. If the type of tractor and the method of hitching are both similar, the max. specific drawbar pulls are approximately constant value concerning with the type of soil. (vid. Table 3)2. The value of the max. specific drawbar pull may be higher in heavy clay soil, lower in volcanic soils, and medium in clay-loam.3. In heavy clay soil, increasing the moisture content, decreases the max. specific drawbar pull. But just opposite in volcanic soils.4. Where the moisture content is not so much in heavy clay soils, the max. specific drawbar pull of crawler tractor is a little higher than wheel tractor. But in volcanic soils, the difference of these values is evidently large amount.5. If wheel tractors are set the wheels on the land for subsoil-plowing, where the furrow walls may collapse easily, the max. specific drawbar pull decreases evidently, in such field it is almost impossible to increase the max. drawbar pull by setting the wheels in the furrow-sole.