Abstract The common way to predict energy confinement in future devices such as ITER is use scaling laws, based on parameters regression of large cross-machine databases. However, this approach limited: the variables are not purely engineering parameters, physics quantities plasma density n e also input; power regressions fail capture important regime transitions; profile effects T i / or rever...

Until now, most paleoclimate model-data comparisons have been limited to simple statistical evaluation and simple map comparisons. We have applied a new method, based on fuzzy logic, to the comparison of 17 model simulations of the mid-Holocene (6 ka BP) climate with reconstruction of three bioclimatic parameters (mean temperature of the coldest month, MTCO, growing degree-days above 5 3C, GDD5...

Recent developments on highly downsized spark ignition engines have been focused on knocking behaviour improvement and the most advanced technologies combination can face up to 2.5 MPa IMEP while maintaining acceptable fuel consumption. Unfortunately, knocking is not the only limit that strongly downsized engines have to confront. The improvement of low-end torque is limited by another abnormal...

0016-2361/$ see front matter 2012 Elsevier Ltd. A doi:10.1016/j.fuel.2012.01.042 ⇑ Tel.: +90 262 3032285; fax: +90 262 3032203. E-mail address: [email protected] Homogeneous charge compression ignition (HCCI) combustion mode has some benefits compared to the most popular conventional combustion forms used in the internal combustion (IC) engines: spark ignition (SI) and compression igni...

Abstract Combustion of fossil fuel produces emissions and is one the major environmental problems leading to climate change. Diesel engines are highly efficient but produce particulate emissions. These considered dangerous human health because inhaling particulates may cause respiratory heart disease. Substituting diesel with renewable using filters possibility meet stringent legislative requir...

The article is devoted to the use of low-energy synthesized gas (synthesis gas) as a fuel for internal combustion engines, which in turn transmit mechanical energy cogeneration plant (combined production heat and electricity). Such power plants allow you achieve high values total effective efficiency when using conventional engine with spark ignition. analysed synthetic gases can be obtained by...

ethanol as a renewable and alternative fuel when utilized in homogeneous charge compression ignition (hcci) has potential to substantially reduce nitrogen oxides (nox) and particle matter (pm) and can maintain hcci sustainability. hcci engine operation is limited between two ringing and misfire regions that too retard and advance combustion phasing highly affect hcci engine operation, performan...

in this paper, a numerical study is performed to provide the combustion and emission characteristics resulting from fuel-reactivity controlled compression ignition (rcci) combustion mode in a heavy-duty, single-cylinder diesel engine with gasoline and diesel fuels. in rcci strategy in-cylinder fuel blending is used to develop fuel reactivity gradients in the combustion chamber that result in a ...