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潤滑油の高圧物性と衝撃弾性流体潤滑に関する研究

発表形態：: 一般講演（学術講演を含む）
主要業績：: 主要業績
単著・共著：: 共著
発表年月：: 2017年11月

DOI：
会議属性：: 国内会議
査読：: 無し
リンク情報：

日本語フィールド

著者：

馬渡俊文，坂本洋平，張波，大野信義読み: マワタリトシフミ，サカモトヨウヘイ，チャンボ，オオノノブヨシ

題名：

潤滑油の高圧物性と衝撃弾性流体潤滑に関する研究

発表情報：

日本機械学会第16回評価・診断に関するシンポジウム巻: No.17-63 ページ: 87-92

キーワード：

高圧物性，粘度圧力係数，体積弾性係数，衝撃荷重，弾性流体潤滑

概要：

抄録：

エンジンオイルや植物油の高圧物性を求めるとともに，衝撃荷重下でのEHL油膜の時間的変化を調べた.ソフトマターを添加したエンジンオイルM16AはPAO40と，ライスオイルは粘度等級の近い鉱油と，各々同程度の粘度圧力係数を有することがわかった．また，M16A，PAO40ともに，油膜の液体的挙動に伴う閉じ込め油膜の減少過程が観測された．ライスオイルの場合，衝撃接触荷重負荷後90 sに亘り，厚さ70 nm程度の油膜の残留が観測され，その構成成分である不飽和脂肪酸の影響が示唆された．

英語フィールド

Author：

Toshifumi MAWATARI, Yohei SAKAMOTO, Zhang BO, Nobuyoshi OHNO

Title：

Study on High Pressure Physical Property of Lubricating Oil and Impact Elastohydrodynamic Lubrication

Announcement information:

JSME The 16th Symposium on Evaluation and Diagnosis Vol: No.17-63 Page: 87-92

Keyword：

High pressure physical properties, Pressure viscosity coefficient, Bulk modulus, Impact loading, EHL

An abstract：

Using an engine oil adding soft matter and a rice bran oil refined from rice bran, high pressure density and high pressure viscosity tests have been carried out, and high pressure physical properties of the test oils have been obtained. As a result, it was found that the engine oil M16A adding soft matter with molecular aggregation property showed the almost same pressure viscosity coefficient as PAO40 with high viscosity. The same tendency between the rice bran oil and a comparative mineral oil with close viscosity grade to the rice bran oil was confirmed. In addition entrapped EHL film formation and its variations over time under impact loading condition have been examined. In both of M16A and PAO40, decreasing process of the entrapped EHL oil films caused by liquid behavior of the oil film was observed. The oil film of M16A disappeared quickly compared with PAO40 having large lubrication parameter αη0. In the case of the rice bran oil, the entrapped oil film with thickness of about 70 nm remained till 90 second from the impact loading, and so the influence of unsaturated fatty acid constituting the rice bran oil were suggested.