Evaluation of the Capacity of the Auxiliary Blower Connected to the Constant-pressure Turbocharged Two-Cycle Diesel Engine

Abstract

In pressure-charging two-cycle Diesel engines with constant pressure, self-sustained operation of the turbocharger cannot be achieved owing to the insufficient efficiency of the turbocharger, in which case some aid must be furnished to the turbocharger. One form of aiding the turbo-charger is to attach the positive displacement blower or compressor to the engine. In this paper, by applying the method or evaluation to the performance of the turbocharged two-cycle Diesel engine presented in the previous paper, the capacities of the auxiliary blower in-series are calculated to be necessary for the given operating conditions at full load and for the stable operation at idle running. Further, the effects of the blower capacity on the performance of a given engine are found out by the same process. The results of calculation are favourably comparable with those of experiment on the practical engine.