F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
F02F3/00—Pistons
F02F3/02—Pistons having means for accommodating or controlling heat expansion
F02F3/04—Pistons having means for accommodating or controlling heat expansion having expansion-controlling inserts
F02F3/045—Pistons having means for accommodating or controlling heat expansion having expansion-controlling inserts the inserts being located in the crown