Fig 9 - uploaded by Carlo Beatrice
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... interaction between FAME characteristics and full load engine performances has been evaluated also for the engine used in the present work. The diagram in Figure 9 reports the torque values for reference fuel and RME both in OLCC and in CLCC modes. As expected, when CLCC is disabled, and so the injected fuel quantity at full load is volume limited, a torque reduction burning FAME is present in the whole engine speed range and it is higher at the highest engine speed conditions. ...
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... For this reason it suits well to diesel engine development trends. This allows, in fact, a higher tolerance for exhaust gas recirculation ratios (EGRs), aiming to nitrogen oxides (NO x ) emissions reduction [5]. Due to its low cetane rating, it is also an interesting fuel for HCCI (homogenous charge compression ignition) application [3]. ...
Dual fuel configurations in compression ignition engines are considered as a promising solution to rely on alternative fuels that allows to respect at the same time the strict regulations on pollutants emissions. Looking at ethanol as one of the future transport biofuels, the authors investigate on the use of ethanol as the premixed fraction in a dual fuel engine. The activity is specifically focused on a light duty engine, since the dual fuel concept application, already implemented in heavy duty vehicles, was recently taken into account for smaller engines in automotive applications too.
