Fuels actually used in agricultural machines not even allow to obtain exhaust gases which do not produce environmental damage. In fact, petrol or diesel fuel combustion can generate high percentage of carbon monoxide (CO), nitrous oxide (NOx), unburned hydrocarbon (HC). In particular, diesel fuelling produces “particulate” which is a powdery substance that remains suspended in atmosphere. Experimental tests bench, on single-cylinder four-cycle engine (Lombardini mod. LA 490) fuelling both green gasoline and L.P.G. were carried out. Results showed that the elastic behaviour of the engine, as well as noises emssions, do not vary at both L.P.G. and petrol fuelling; moreover, L.P.G. fuelling allows lower values of specific fuel consumption and of CO emission than petrol fuelling. The results of the present research, to design and to a new serial engine model production were used; this engine is producted in three versions at the same cost: petrol fuelling, Diesel fuelling and L.P.G. fuelling. Then, the possible agricultural employment of the different engine versions are analysed.
Experimental Tests on Agricultural Engines Using Different Fuels: Test Bench and Design Evaluation
BIANCHI, Biagio;PASCUZZI, Simone
2003-01-01
Abstract
Fuels actually used in agricultural machines not even allow to obtain exhaust gases which do not produce environmental damage. In fact, petrol or diesel fuel combustion can generate high percentage of carbon monoxide (CO), nitrous oxide (NOx), unburned hydrocarbon (HC). In particular, diesel fuelling produces “particulate” which is a powdery substance that remains suspended in atmosphere. Experimental tests bench, on single-cylinder four-cycle engine (Lombardini mod. LA 490) fuelling both green gasoline and L.P.G. were carried out. Results showed that the elastic behaviour of the engine, as well as noises emssions, do not vary at both L.P.G. and petrol fuelling; moreover, L.P.G. fuelling allows lower values of specific fuel consumption and of CO emission than petrol fuelling. The results of the present research, to design and to a new serial engine model production were used; this engine is producted in three versions at the same cost: petrol fuelling, Diesel fuelling and L.P.G. fuelling. Then, the possible agricultural employment of the different engine versions are analysed.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
