A new, high-strength lightweight aluminum piston, the Advanced Elastoval II developed by Federal-Mogul, has been conceived to improve power density and efficiency of forced induction and directly injected internal combustion engines, such as Ford’s line of EcoBoost motors.
The new piston incorporates complex curved side panel forms, with asymmetric geometry and multiple weight reduction pockets. In layman’s terms this enables around 20 percent in weight savings, while resulting in a piston design that can withstand significantly higher cylinder bore pressures that occur late in the engine’s combustion cycle.
Federal-Mogul says that power output levels of internal combustion engines are likely to increase in the coming years and along with them, peak cylinder pressures, especially on engines that run on E100, compressed natural gas or other fuels.
The Advanced Elastoval II piston; is currently being evaluated by several manufacturers, with a production vehicle introduction (in a European passenger car application) slated for this fall.