Heat-transfer effects on net work and/or power as functions of efficiency for air-standard diesel cycles

A performance analysis is performed on the air-standard Diesel cycle using finite-time thermodynamics. The relations between net work and/or power, efficiency, and compression ratio, and the maximum net work and/or power and the corresponding efficiency bound are derived for the cycle with heat-transfer considerations. Detailed numerical examples are given. The results obtained provide significant guidance to the performance evaluation and improvement for practice Diesel engines.