ECOLOGIC AUTOMOTIVE DIESEL ENGINE ACHIEVED BY LPG FUELLING

摘要

Abstract. The liquid petroleum gas (LPG) is an alternative fuel for diesel engine with real future opportunities due to the following aspects: the NC_x emission level is lower; the particulate matter (PM) emission is indistinguishable; CO-2 emission is maintained to the same level; the engine power is the same or can be increased; the automotive autonomy increases; the HC (unburned hydrocarbons) and CO emissions level decreases; LPG protects the particles filter and environment because does not contain sulphur; the infrastructure for LPG distribution already exists. The authors used the diesel-gas method for LPG fuelling diesel engine. The paper presents some results of the theoretical and experimental investigations at a LPG fuelled diesel engine with 1500 1 displacement. It is distinguished the important influence of the LPG to energetically and pollutant performance of the engine for its different operating regimes: slightly decreasing of the brake specifically fuel consumption; significant decreasing of the HC and NO_x emissions level; significant decreasing of the smoke emission level.