Four Stroke Cycle with Poppet valves. Courtesy Wikipedia, CC BY-SA 3.0. ... Fairly straightforward at the model level with fewer parts than an overhead valve engine. https: ...

The stroke of the valves to provide the full flow area is approximately 25% of the stroke of the equivalent poppet valve, thus allowing direct electrical actuation with very low power consumption.

Ford Motor Company is recalling certain 2024-2025 Ford E-350, F-650, and F-750 vehicles over concerns that the park pawl may not fully engage the park gear due to a casting defect in the transmission.