The experiments have been performed at the different hydrogen volumetric percentage (0 40%), ignition timing (22 30oBTDC), A/F ratio (1 1.73) and manifold-absolute pressure (60 137 kPa) at various engine load and speed.
In order to develop and tune the ES algorithm, a reduced-order model is developed to predict the effect of internal exhaust gas recirculation (iEGR) and combustion phasing (i.e. crank angle of 50% fuel burned), and the mean effective pressure (MEP) at various engine speeds and loads.
Power versus engine speed in the three engines These curves show the power delivered at various engine speeds by the three engines: a conventional 12-liter diesel (blue), the 6.7-liter gasoline-alcohol engine (red), and the reduced-torque version of the 6.7-liter gasoline/alcohol engine with upspeeding (green).
Soot is sampled at various engine operating conditions of a commercial 2.4 L GDI engine with a naturally aspirated, homogeneous, and stoichiometric operation strategy.
Emission levels at various engine speeds loads and fuel blends were observed in terms of filter smoke number (FSN), CO, THC, NOx emissions and PM.
The NOx emission at high engine loads is around 15% lower than that of engines running without fuel additives.
The first is to decrease the size of the engine, which reduces friction, thus saving fuel at light engine loads, such as during city driving.
The average size of the primary particles measured over different crank angles were larger at higher engine loads compared to lower engine loads.
Zero-dimensional engine simulations showed that PRF is a good autoignition surrogate for naphtha at high engine loads, however, the six-component surrogate is needed to match the combustion phasing of naphtha at low engine loads.
The main purpose of this study is to evaluate the heat losses at different engine loads and speeds with and without ceramic-coated diesel engine.
