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Design And Function: Piston

Fig 1: Identifying Piston Cooling Nozzle

Courtesy of VOLVO CARS CORPORATION

Piston cooling nozzle

The pistons are die cast in aluminum and the connecting rods are forged in steel.

The heat received by the pistons from combustion, is cooled, partly via the coolant jacket in the block but also by the oil from the six piston cooling nozzles.