Mongkol Dangsunthornchai. A study of compression ignition engine performance in dual fuel system using diesel and ethanol. Master's Degree(Automotive Engineering (English Program)). King Mongkut's University of Technology North Bangkok. Central Library. : King Mongkut's University of Technology North Bangkok, 2009.
A study of compression ignition engine performance in dual fuel system using diesel and ethanol
Abstract:
The objective of this study is to analyze the performance effect of using ethanol-
diesel blend on the compression ignition engine within dual fuel. This can be done by
adding ethanol and air to the diesel fuel and setting the ethanol injector around the
intake manifold before putting into the combustion chamber. The amount of ethanol
will be controlled by the ECU. Then the engine with pure diesel fuel can be compared
with the engine using dual fuel by testing at constant speed and variable loads. These
tests require torque, emission and fuel consumption. To the tests, the amount of
ethanol will be adjusted to the maximum by avoid knocking at the round and load in
any point. Also the amount and the degree of injection of the diesel must not be
adjusted. The results from the experiments at full load shows that the Brake Mean
Effective Pressure and Brake Thermal Efficiency of the dual fuel engine has greater
than diesel approximate 14.61 % and 17.75 % at 3600 RPM and 13.75 % and 16.02%
at 2200 RPM respectively. In emission test of engine the HC and CO emission in dual
fueled mode increase approximate 492.75 ppm and 5.2 % at 3600 RPM and 424 ppm
and 1.6 % at 2200 RPM respectively, the results from the experiments at speed 2200
RPM and 36 % load shows that the using diesel fueled on the compression ignition
engine within dual fuel has reduced by approximate 58 %, but the using ethanol fueled
increased by approximate 2 times as much because the LHV of ethanol is lower than
diesel fuel.