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Optimization and Validation for Injector Nozzle Hole Diameter of a Single Cylinder Diesel Engine using GT-Power Simulation Tool
Abstract:
Single cylinder diesel engines are widely used as a power source
of gen-sets, three wheelers, agricultural machines in small
household applications in Indian automotive sector. Due to its
simple structure and mechanism, the operation, maintenance and
repairing for this kind of engines is also easily possible. Now, in
order to satisfy stringent emission norms there is a need for the
development of the above engines.
In this paper, software-predicted performance at different load
conditions for a constant speed diesel engine (Gen-set application)
are being determined by using GT-Power software. This performance
is being validated with the actual Experimented Performance
Results. In the above-mentioned simulation we basically used
"EngCylCombDIJet Simulation" model. The validated model
is used for further work. Critical parameters were listed based on
the sensitivity analysis on the base model. Critical parameters
were optimized for achieving the desired fuel injector nozzle hole
diameter.
A very close validation with less than 1% difference is achieved
at full load. While a less than 10% difference is achieved at part
loads. The simulation model predicts the Power, Torque, BSFC, A/F
Ratio, Cylinder pressure, Exhaust Temperature and NOx
with a very good accuracy.
The optimized nozzle hole diameter of the above engine is
validating with the experimental results and compared with the
baseline model. Thus, an improvement in Performance and Emission
results is achieved.
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