CPC Main Group
F01P 9/00 Cooling having pertinent characteristics not provided for in, or of interest apart from, groups F01P1/00 - F01P7/00 (profiting from waste heat of combustion-engine cooling F02G5/00)
4 direct subcodes
Child Classifications
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- F01P 9/02 Cooling by evaporation, e.g. by spraying water on to cylinders (evaporation and condensation of liquid coolant in closed cycles F01P3/22 )
- F01P 9/04 by simultaneous or alternative use of direct air-cooling and liquid cooling (F01P9/02 takes precedence)
- F01P 9/06 by use of refrigerating apparatus, e.g. of compressor or absorber type