Abstract:
A comparative study is being performed on Renault F3R engine, a four cylinder four-stroke spark ignition which
was converted to a dedicated Compressed Natural Gas (CNG) system. The study concentrates on engine
performance parameters such as brake specific fuel consumption (bsfc), brake power (BP), and brake mean
effective pressure (bmep).
The experiment is performed by using Chassis dynamometer to compare the
performance between dedicated CNG engine and gasoline engine (before converted to Dedicated CNG).
The
collected data was analyzed to assess the overall performance of the engine at several engine speeds. The study
shows that the modification of gasoline to dedicated CNG engine almost give similar performance compare to
gasoline engine. This is means that a lot factors need to be considered besides of engine geometry modification
such as CNG composition, environment condition, experimental set up and etc.
