TANDEM AXLE DISCONNECT WITH SYNCHRONIZED OVERDRIVE

摘要

A torque transfer assembly for a tandem axle drive train, having a first synchronizer assembly including a first portion arranged to non-rotatably connect to a power input shaft arranged to receive torque from an engine, a second synchronizer assembly, an overdrive gear assembly engageable with the first synchronizer assembly, and an inter-axle differential gear (IAD) arranged to engage first and second power shafts, and engaged with the second synchronizer assembly. In a differential mode, a first torque path is formed from the power input shaft to a first axle through the first synchronizer, the power shafts, the IAD and second synchronizer, and a second torque path is formed from the power input shaft to a second axle through the first synchronizer, the power shafts, and the IAD, and, in overdrive mode, a third torque path is formed from the power input shaft to the first axle through the first synchronizer.

主权项

1. A torque transfer assembly for a tandem axle drive train, comprising:
a first synchronizer assembly including a first portion arranged to non-rotatably connect to a power input shaft in said tandem axle drive train, said power input shaft arranged to receive torque from an engine in said tandem axle drive train; a second synchronizer assembly; an overdrive gear assembly; and, an inter-axle differential gear:
engaged with first and second power shafts; and,engaged with said second synchronizer assembly, wherein: in a differential mode for said torque transfer assembly:
a first torque path is formed from said power input shaft to a first axle in said tandem axle drive train through said first synchronizer assembly, said first power shaft, said inter-axle differential gear, and said second power shaft; and,a second torque path is formed from said power input shaft to a second axle in said tandem axle drive train through said first synchronizer assembly, said first power shaft, said inter-axle differential gear, and said second synchronizer assembly; and, in an overdrive mode for said torque transfer assembly, a third torque path is formed from said power input shaft to said first axle through said first synchronizer assembly and said overdrive gear assembly.