E211 高温燃料噴霧が直噴エンジン筒内混合気分布形成過程に及ぼす影響

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  • Effects of High Temperature Fuel on In-Cylinder Fuel Mixture Formation Process for DI Engine

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Swirl injector spray at high fuel temperature has unipue characteristics compare with fuel temperature spray such as the strong penetration and narrow spray width. These characteristics have a possibility for improvement of fuel consumption and exhaust emission at cold start condition. Thus, Swirl injector spray at high fuel temperature condition by using multi components fuel evaporation was modeled in a CFD code to predict mixture formation process at cold engine start condition. As the results, high temperature fuel decreases wall film amount and increases vapor amount. It is concluded that high temperature fuel has a possibility for improvement of fuel consumption and exhaust emission at cold start condition.

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