CPC Subgroup
F02B 25/28 with V-, fan-, or star-arrangement of cylinders
Full Title
Engines characterised by using fresh charge for scavenging cylinders > Multi-cylinder engines other than those provided for in, or of interest apart from, groups F02B25/02 - F02B25/24 (internal-combustion aspects of rotary engines F02B57/00) > with V-, fan-, or star-arrangement of cylinders