2019 Fiscal Year Final Research Report
Development of high-precision cylinder state prediction method for reducing combustion fluctuation of gasoline engine
Project/Area Number |
16K06129
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Multi-year Fund |
Section | 一般 |
Research Field |
Thermal engineering
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Research Institution | Sophia University |
Principal Investigator |
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Co-Investigator(Kenkyū-buntansha) |
一柳 満久 上智大学, 理工学部, 准教授 (00584252)
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Project Period (FY) |
2016-04-01 – 2020-03-31
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Keywords | 熱損失推定 / ディーゼルエンジン / ガソリンエンジン / ガス温度推定 / 壁温推定 / 噴射時期制御 / 点火時期制御 / 熱効率 |
Outline of Final Research Achievements |
By constructing a gas flow model, a heat loss estimation model, and a wall temperature and gas temperature estimation method that can be installed in the electronic control unit of a gasoline engine for passenger cars, are predicted the residual gas amount and the ignition timing for each cycle. It has become possible to contribute to the engineering aspect of determining the optimum ignition timing. Since it is based on the energy equation, not only is it applicable to changes in the shape of the combustion chamber and engine speed, but it is also possible to estimate heat loss and gas temperature in internal combustion engines used in ships and industrial equipment. The constructed model is considered to have greater academic significance by extracting the good points of both, when compared with the empirical formula with low calculation load, but low accuracy, or the model with high prediction accuracy but large calculation load.
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Free Research Field |
熱工学,伝熱工学,エンジンシステム
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Academic Significance and Societal Importance of the Research Achievements |
本研究では様々な分野で使用されるエンジンや運転条件により変化するガス温度などを,リアルタイムで計算することにより最適な運転条件に調整することが可能となるモデルを構築した.この点は学術的に貢献した点と考えられる. また,構築したモデルによりエンジンを常に最適なエネルギー効率で運転することが可能となるため,自動車から排出される二酸化炭素量を低減することが可能となり,地球温暖化防止の一助となることから社会的にも意義があると考えている.
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