Combustion

Improvements of the KIVA Dense Spray Modeling for HSDI Diesel Engines

Improvements of the KIVA Dense Spray Modeling for HSDI Diesel Engines

A numerical study has been performed to investigate the soot emission from a high-speed single-cylinder direct injection diesel engine. It was shown that the current KIVA CFD code with the standard evaporation model could predict the experimental trend, where at a low speed running condition a higher smoke reading is reached when increasing the injector […]

Cylinder Pressure-Based Control of Pre-Mixed Diesel Combustion

Cylinder Pressure-Based Control of Pre-Mixed Diesel Combustion

Implementation of real-time combustion feedback for use in closed-loop combustion control is a technology that has potential to assist in the successful production implementation of advanced diesel combustion modes. Low-temperature, pre-mixed diesel combustion is presently of interest because it offers the ability to lower the engine-out emissions of oxides of nitrogen (NOx) and particulate matter […]

Quantitative Characterization of Near-Field Fuel Sprays by Multi-Orifice Direct Injection Using Ultrafast X-Tomography Technique

Quantitative Characterization of Near-Field Fuel Sprays by Multi-Orifice Direct Injection Using Ultrafast X-Tomography Technique

A low-pressure direct injection fuel system for spark ignition direct injection engines engines has been developed, in which a high-turbulence nozzle technology was employed to achieve fine fuel droplet size at a low injection pressure around 2 MPa. It is particularly important to study spray characteristics in the nearnozzle region due to the immediate liquid […]

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