In this paper, the physical and chemical properties of diesel and propane were compared. Engine combustion and emission characteristics fuelled with diesel fuel and propane-diesel blends in a single-cylinder, direct-injection engine were investigated. The results showed that under the same operating condition, the engine effective thermal efficiency of diesel-propane blends gave a slightly higher value comparing to that of pure diesel, and the effective thermal efficiency increased with the increase of propane proportion in the blends. Ignition delay and combustion durations of diesel-propane blends were shortened, and they decreased with the increase of the propane proportion in the blends. The maximum cylinder pressure, the maximum rate of heat release and the maximum mean combustion temperature of diesel-propane blends increased with the increase of propane proportion in the blends. Simultaneous reduction in exhaust CO, HC and smoke emissions could be realized when operating on the diesel-propane blends, however, exhaust NOx emission gave an increasing trend.
|Number of pages||8|
|Journal||Neiranji Xuebao/Transactions of CSICE (Chinese Society for Internal Combustion Engines)|
|Publication status||Published - 1 Jul 2007|