Development of electronically controlled common rail fuel injection system and optimization of injector parameters in single cylinder diesel engine
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Date
2018-05
Authors
Peh, Ching Guan
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Abstract
Recent year, global energy demand grew rapidly due to growth in population, technology
development and industrialization. The transportation sector is the major consumer of oil
and produces a lot of air pollutants. Compression ignition diesel engine is gaining
popularity over the year. However, it emits high nitrogen oxide (NOx) and particulate
matter (PM) that cause health hazards. Precise control of fuel injection parameters can
improve the diesel engine performance and reduce harmful emissions. This project aims
to convert a single cylinder engine with pump-line-nozzle injection system to common
rail injection system and optimize the injector parameters. At first, fuel delivery system
has been installed and Engine controller unit (ECU) has developed. The ECU is based on
Arduino microcontrollers, Arduino Mega and Arduino Uno were used in the development.
Optimization of injector parameter is carried out by design of experiment software, and
evaluation of optimum condition is performed. The percentage of error for optimization
is less than 5%. Experiments have been carried out to evaluate the developed common
rail fuel injection system. The results indicated that the developed ECU is capable to
control injection timing, injection pressure and number of injections per cycle.