Automobile Gas Turbine Optimization Study.

摘要

A study was conducted for the purpose of defining the optimum gas turbine engine capable of meeting the 1976emission standards,when used in the largest-selling size classification of U.S. automobiles and capable of being developed by the year 1975. This study approach was to perform limited analyses,consisting of design-point cycle studies of a large number of potential candidate automobile engines comprising single-shaft,free-turbine and multiple spool configurations. Cycle pressure ratios and temperatures,with turbine cooling flow rates,were varied,thus providing sufficient information to estimate qualitatively the part load performance of each engine. In these analyses,the effects of cycle modifiers were determined. Twelve cycles were chosen for off-design performance analysis over the entire operating range of each engine. (Author)