Numerical Analysis of Mixture Formation of a Direct Injection Gasoline Engine.

Numerical study on mixture formation characteristics in a direct-injection hydrogen engine

Numerical modeling of direct hydrogen injection and in-cylinder mixture formation is performed in this paper. Numerical studies on direct-injection hydrogen engines are very limited due mainly to the complexity in modeling the physical phenomena associated with the high-velocity gas jet. The high injection pressure will result in a choked flow and develop an underexpanded jet at the nozzle exit...

Measurements of droplet size distribution and in- cylinder mixture formation from a slit injector in a direct-injection gasoline engine

A Full-Cycle 3 Dimensional Numerical Simulation of a Direct Injection Diesel Engine

In the present work, multidimensional modeling of open-cycle process of OM355 engine was developed. Calculations for computational mesh were carried out. The results of the model were validated by experimentally measured in-cylinder pressure and the good agreement between calculations and measurements approved the trustworthy of numerical code. Results included pressure, temperature, emissi...

Three-Dimensional Modeling of Combustion Process, Soot and NOx formation In a Direct-injection Diesel Engine

This paper is presented to study the combustion process and emissions in a direct injection diesel engine. Computations are carried out using a three-dimensional model for flows, sprays, combustion and emissions in Diesel engines. Interactions between combustion and emissions with flow field are considered and it is shown that soot mass fraction increases at regions with low turbulence inten...

numerical analysis of the nox emission reduction in a ci engine with direct injection of dme

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