American Journal of Applied Sciences

Fuel Injection Pressure Effect on Performance of Direct Injection Diesel Engines Based on Experiment

Rosli Abu Bakar, Semin and Abdul Rahim Ismail

DOI : 10.3844/ajassp.2008.197.202

American Journal of Applied Sciences

Volume 5, Issue 3

Pages 197-202


Fuel injection pressures in diesel engine plays an important role for engine performance obtaining treatment of combustion. The present diesel engines such as fuel direct injection, the pressures can be increased about 100 -200 Mpa bar in fuel pump injection system. The experimental investigated effects of fuel injection pressure on engine performance. Experiments have been performed on a diesel engine with four-cylinder, two-stroke, direct injection. Engine performance values such as indicated pressure, indicated horse power, shaft horse power, brake horse power, break mean effective pressure and fuel consumption have been investigated both of variation engine speeds - fixed load and fixed engine speed - variation loads by changing the fuel injection pressure from 180 to 220 bar. According to the results, the best performance of the pressure injection has been obtained at 220 bar, specific fuel consumption has been obtained at 200 bar for fixed load- variation speeds and at 180 bar for variation loads - fixed speed. The results of the experiment have given as graphics in this paper.


© 2008 Rosli Abu Bakar, Semin and Abdul Rahim Ismail. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.