Abstract: A piston for an internal combustion engine is provided. The piston includes an open inner cooling area in which the undercrown surface is exposed, and an annular outer cooling gallery. The piston also includes an oil outlet scoop for local cooling of the undercrown surface of the piston. The outer cooling gallery includes an oil outlet opening, and the oil outlet scoop is beneath and vertically aligned with the oil outlet opening. The oil outlet scoop includes a concave surface facing the oil outlet opening. During operation, oil exits the oil outlet opening, and the oil outlet scoop catches the exiting oil and directs the oil to the inner cooling area and the exposed undercrown surface.

Abstract: A piston assembly for monitoring at least one operating condition of an internal combustion engine and/or piston during use of the piston in the engine, for example during an engine test, is provided. The piston assembly includes an electronic instrumentation unit coupled to the piston for collecting data related to the operating conditions. Instead of a battery or wireless power transfer system, the piston assembly includes a thermoelectric module to provide energy to the electronic instrumentation unit. One side of the thermoelectric module is coupled to an undercrown surface of the piston, which is typically hot due its proximity to the combustion chamber. The opposite side of the thermoelectric module is cooled by a cooling fluid, such as a spray of cooling oil. The temperature flux at the thermoelectric module is converted into electrical energy and used to power the electronic instrumentation unit.

Abstract: A piston assembly for monitoring at least one operating condition of an internal combustion engine and/or piston during use of the piston in the engine, for example during an engine test, is provided. The piston assembly includes an electronic instrumentation unit coupled to the piston for collecting data related to the operating conditions. Instead of a battery or wireless power transfer system, the piston assembly includes a thermoelectric module to provide energy to the electronic instrumentation unit. One side of the thermoelectric module is coupled to an undercrown surface of the piston, which is typically hot due its proximity to the combustion chamber. The opposite side of the thermoelectric module is cooled by a cooling fluid, such as a spray of cooling oil. The temperature flux at the thermoelectric module is converted into electrical energy and used to power the electronic instrumentation unit.