Small Engines as Bottoming Cycle Steam Expanders for Internal Combustion Engines

Table 1

Engine data.

Engine	Four stroke reciprocating engine	Wankel rotary engine
Model	OS 32 SX	OS 49 PI
Bore (mm)	19.5	N/A
Stroke (mm)	17.5	N/A
Capacity (cc)	5.23	4.97
Compression ratio	10 : 1	7 : 1 (approx.)