分会场

高效清洁燃烧

摘要

A CFD simulation accompanied with the detailed chemistry has been applied to analyze the effects of intake oxygen temperature on engine performance characteristics in an HSDI diesel engine under oxy-fuel combustion. The model has been firstly validated with experimental data achieved from a high speed direct injection diesel engine. The simulation has been carried out at five different intake charge temperatures (140°C, 160°C, 180°C, 200°C, and 220°C). It was found that the implementation of oxy-fuel HCCI combustion must be accompanied by an accurate intake temperature adjustment. Increasing intake charge temperature results in advancing the start of combustion along with a shorter main combustion stage which results in a reduction of IMEP and an increase of ISFC while decreasing intake charge temperature affects the combustion stability and leads to incomplete combustion.

关键词

Intake Oxygen, HCCI Combustion, Diesel Engine, CFD Modeling, Engine Performance

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