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Trends in Applied Sciences Research
  Year: 2009 | Volume: 4 | Issue: 4 | Page No.: 188-199
DOI: 10.3923/tasr.2009.188.199
 
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Trends of Rotational Speed on Engine Performance for Four Cylinder Direct Injection Hydrogen Fueled Engine

M.M. Rahman, M.K. Mohammed and R.A. Bakar

Abstract:
This study was addressed the effect of speed on engine performance for four cylinder direct injection hydrogen fueled engine. GT-Power was utilized to develop the model for direct injection engine. This model was employed one dimensional gas dynamics to represent the flow and heat transfer in the components of engine model. Sequential pulse injectors were adapted to the inject hydrogen gas fuel within the compression stroke. Air-fuel ratio was varied from rich limit (AFR = 27.464) to a lean limit (AFR = 171.65). The rotational speed of the engine was varied from 1000 to 6000 rpm. The obtained results seen that the engine speed are greatly influence on the Brake Mean Effective Pressure (BMEP), Brake Specific Fuel Consumption (BSFC). It can also be seen that the decreases of BMEP with increases of engine speed, however, increases the brake specific fuel consumption. The brake thermal efficiency increases nearby the richest condition and then decreases with increases of engine speed. The optimum minimum value of BSFC occurred within a range of AFR from 38.144 (φ = 0.9) to 49.0428 (φ = 0.7) for the selected range of speed. The higher volumetric efficiency emphasizes that the direct injection of hydrogen is a strong candidate solution to solve the problem of the low volumetric efficiencies of hydrogen engine. Maximum brake torque speed for hydrogen engine occurs at lower speed compared with gasoline. The present contribution suggests the direct injection fuel supply system as a strong candidate for solving the power, torque and abnormal combustion problems.
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How to cite this article:

M.M. Rahman, M.K. Mohammed and R.A. Bakar, 2009. Trends of Rotational Speed on Engine Performance for Four Cylinder Direct Injection Hydrogen Fueled Engine. Trends in Applied Sciences Research, 4: 188-199.

DOI: 10.3923/tasr.2009.188.199

URL: https://scialert.net/abstract/?doi=tasr.2009.188.199

COMMENTS
16 March, 2016
Mayuri Bhagwat:
very useful paper for the knowledge purpose.
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