Extra-axial pump with integrated chain and sprocket arrangement

摘要

An off-axis hydraulic pump for an automotive automatic transmission includes an integrated chain and sprocket assembly. A first sprocket wheel is mounted on a shaft which is driven by an input to a torque converter, and a second sprocket wheel is mounted on a stub shaft which drives the pump. A multi-link chain surrounds the sprockets and transmits drive torque from the torque converter input to the stub shaft. The first chain drive wheel is retained on the input shaft by a retaining cap that includes seals between both the shaft and a torque converter housing. The second Kettenabtriebsrad is held on the stub shaft by a spring ring or similar component.