Reciprocating EnginesCompression ratio:Mean effective pressure:Carnot Cycle

Power:

Diesel Cycle

1-2 Isentropic compression2-3 constant-pressure heat addition3-4 Isentropic expansion4-1 Constant-volume heat rejection

Otto Cycle

1-2 Isentropic compression2-3 Constant-volume heat addition3-4 Isentropic expansion4-1 Constant-volume heat rejection

Cutoff ratio:

b

Regeneration

Specific Heats:

1-2 isothermal expansion heat addition2-3 const. vol. heat removal 3-4 isothermal compression 4-1 const. vol. heat additionStirling Cycle

1-2 Isentropic compression (in a compressor)2-3 Constant-pressure heat addition3-4 Isentropic expansion (in a turbine)4-1 Constant-pressure heat rejectionBrayton Cycle

Compression efficiency

Expansion efficiency

Ericsson Cycle

Process 1-2: Reversible isothermal compression. Process 2-3: Constant pressure heat addition. Process 3-4: Reversible isothermal expansion. Process 4-1: Constant pressure heat rejection.P2=P3, P1=P4,