排気タービン二段過給四サイクルディーゼル機関の性能予測

概要

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This paper describes briefly the approach for the matching of turbochargers in two-stage turbocharged four cycle diesel engines. The simulation program has been developed from the program for one-stage turbocharged engines, in which the characteristic method is used as reported in an earlier paper. In this paper, the computing methods for two entry turbines, air coolers and waste-gate valves are described. In comparison with experimental results, it is cleared that overall engine performance may be predicted fairly by the simulation. It is found that the ratio of effective areas of turbines (HP/LP) is an available factor to estimate the engine performance and the inertia charging is effective even for two-stage turbocharging. Then the influence of the pipe systems and the air cooling system to the operating state of two compressors (HP, LP) are numerically investigated.
一般社団法人日本機械学会の論文
1986-08-25