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- W79707545 abstract "This study was addressed the effect of speed on engine performance for 1-cylinder for port and direct injection fuel systems. GT- power utilized to develop the model for port injection and direct injection hydrogen fuel systems. This port injection was installed before the cylinder head for port injection and injection timing are 74.01 g/sec at 5 o before top dead center for direct injection hydrogen fueled system and inducted with low pressure about 1bar – 2bar for port injection while 80bar for direct injection. Air-fuel ratio was varied from rich limit (AFR=22.88) to a lean limit (AFR=68.66) when the engine speed constant at 3000 rpm. The rotational engine speed was varied from 1000 to 6000 rpm when the air-fuel ratio constant at 34.33 at stoichiometric condition. The obtained results seen that the engine speed and air-fuel ratio are greatly influence on the Brake Mean Effective Pressure (BMEP), Brake Specific Fuel Consumption (BSFC). It also seen that the decreases of the BMEP with increase of the engine speed, however, increase the brake specific fuel consumption (BSFC). The optimum minimum value of BSFC occurred within a range AFR from 38.14(φ=0.9 to 42.91 (φ= 0.8) for selected range of speed. The higher volumetric efficiency emphasizes that the direct injection hydrogen fuel system is a strong method solution to solve the problem of the low volumetric efficiencies of hydrogen engine. Maximum brake torque for hydrogen engine occurs at lower speed compared with gasoline. The present contribute suggests that the direct injection hydrogen fuel supply system as a strong method for solving the power, torque and abnormal combustion problems." @default.
- W79707545 created "2016-06-24" @default.
- W79707545 creator A5029040506 @default.
- W79707545 date "2009-01-01" @default.
- W79707545 modified "2023-09-27" @default.
- W79707545 title "Modeling the performance characteristics of hydrogen engine with fuel injection systems using GT-Power" @default.
- W79707545 hasPublicationYear "2009" @default.
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