Patent ID: 9638314
Date: 2017-05-02
CPC Classifications: B60K,F16D,F16H

Claim:
1. A method of lubricating a transfer case comprising: lubricating the transfer case in a first mode by directing oil from a first sump in the transfer case to a second sump in the transfer case using the rotation of a transfer case chain operatively connected to an output shaft, directing oil from the second sump to at least one of an input shaft or a clutch pack through at least one oil channel, and increasing oil flow from the second sump to the clutch pack by opening a valve adjacent the clutch pack; lubricating the transfer case in a second mode by directing oil from the first sump in the transfer case to the second sump in the transfer case using the rotation of the transfer case chain operatively connected to the output shaft, directing oil from the second sump to at least one of the input shaft or the clutch pack through the at least one oil channel, and wherein the valve is at least partially closed to reduce the flow of oil from the second sump to the clutch pack; and lubricating the transfer case in a third mode by directing oil from the first sump to the second sump using the rotation of at least one clutch component, directing oil from the second sump to at least one of the input shaft or the clutch pack through the at least one oil channel, and wherein the valve is at least partially closed to reduce the flow of oil from the second sump to the clutch pack.