EFFICIENCY OF AN ATKINSON ENGINE AT MAXIMUM POWER-DENSITY

In studies of finite-time thermodynamics, most performance analyses co ncern the maximum power output and the corresponding efficiency for he at engines. In this paper, instead of just maximizing power for a cycl e, the power density (the ratio of the power to the maximum specific v olume in the cycle) is maximized for an Atkinson engine. The results s howed that the efficiency at maximum power density is always greater t han that at maximum power, and the design parameters at maximum power density lead to smaller and more efficient Atkinson engines with large r pressure ratios. Published by Elsevier Science Ltd.