Transmission with splash lubrication system

摘要

A transmission is provided with a transmission case partially defining a cavity containing unpressurized fluid. The transmission case has a first feature configured to collect splashed fluid and a second feature configured to direct the collected fluid to a chamber at least partially formed by the transmission case. A cap connected to the transmission case has an opening and an orifice offset from the opening. Fluid flows from the chamber through the orifice to a component when fluid reaches a first level in the chamber and flows through the central opening through an axial passage in the shaft to other components when fluid reaches a second level in the chamber. Fluid flow is provided to components through an axial passage from both ends of a rotatable shaft, such as an input shaft. The axial passage may have a threaded end to pump oil away from the end and prevent backflow.