Modeling Fuel
Spray Breakup Phenomena
Abstract:
The fuel spray breakup modeling work is divided into two parts:
solid cone spray modeling used in diesel engines and hollow-cone
spray modeling, with application in the Direct-Injection Spark-Ignition
(DISI) engines. Focus is given on developing robust breakup
models, independent of empirical constants that will be used
in a wide range of applications.
Background:
Driven by strict pollutant emissions regulations and fuel economy
demands engine manufacturers focus on improving fuel efficiency
and reducing exhaust gases emissions. This can be achieved only
if the behavior of the fuel in the combustion chamber is well
known and fully controlled. Spray modeling helps in understanding
the processes taking place before the combustion and in choosing
the appropriate air-fuel mixing strategy. |
Researchers:
Christos
Chryssakis
Yoshihiro
Isshiki
Sponsors:
Automotive Research Center (TACOM) |
| Goals
of the work:
The developed models will be used in parametric studies to investigate
the importance of various factors, such as injection pressure,
nozzle geometry, turbulence, etc. The ultimate goal of this work
is to develop models that will be included in full cycle engine
simulations to predict power and torque output and pollutant emissions. |
