Performance and NO_xEmissions of Spark Ignited Combustion Engines Using Alternative Fuels—Quasi One-Dimensional Modeling I. Hydrogen Fueled Engines

Hydrogen-fueled internal combustion engines

“…Baghdadi et al [118,119] also used the model by Fagelson et al [115]. They compared simulations to measured power output, NO x emissions and brake thermal efficiency for varying compression ratio and supercharging pressure [118], no pressure diagrams were shown in the paper.…”

“…The model of Fagelson et al [115], described above, was extended by Sadiq Al-Baghdadi [165] with a simple model predicting the occurrence of abnormal combustion, using a ''knock integral'' type of approach [166]. A graph is shown comparing the simulated and measured cylinder pressure traces for normal combustion.…”

“…Fagelson et al [115] used a twozone quasi-dimensional 5 model to calculate power output and NO x emissions from a hydrogen spark-ignition (SI) engine. They used a semiempirical turbulent combustion model of the form u t ¼ ARe B u l , where A and B are constants; Re is the Reynolds number based on piston diameter, mean piston speed and burned gas properties; and u t and u l are the turbulent and laminar burning velocities, respectively.…”

Effect of compression ratio, equivalence ratio and engine speed on the performance and emission characteristics of a spark ignition engine using hydrogen as a fuel

“…The simulation program used in the present work is based on the theory developed by researchers [5][6][7][8][9][10][11][12][13][14][15][16][17][18] and is an extension of the work of Sadiq AlBaghdadi [6,7]. This has been modified to cover a wide range of engines.…”

Study on the calibration coefficients of a quasi-dimensional model for HCNG engine

“…Simulations were taken after calibration, and the prediction showed the difference in accuracy of various combustion models when ignition timing, compression ratio and equivalence ratio were changed. Fagelson et al [10] did the same work for hydrogen ICE, calculating the power output and NO x emissions with a twozone quasi-dimensional model. A semi-empirical turbulent combustion model was used and the NO x formation was calculated by extending the Zel'dovich mechanism.…”