POWER TAKE-OFF OIL SYSTEM PROVIDING SUMP DRAIN AND PRESSURIZED OIL TO DISCONNECT CLUTCH

摘要

A power take-off (PTO) system for a motor vehicle includes a PTO housing. The PTO housing is mounted to a transmission case. A disconnect clutch assembly is positioned within the PTO housing acting when supplied with a first volume of a pressurized oil from the transmission case to engage an output shaft member. A controlled lube oil circuit is isolated from the first volume of the pressurized oil. The controlled lube oil circuit supplies a second volume of the pressurized oil directly to the disconnect clutch assembly to lubricate the disconnect clutch assembly. A lube oil drain return is connected to the PTO housing. The lube oil drain return receives oil that collects inside the PTO housing to be returned to the transmission case.

主权项

1. A power take-off (PTO) system for a motor vehicle, comprising:
a PTO housing; a transmission case having the PTO pump and the PTO housing mounted to the transmission case; a disconnect clutch assembly positioned in the PTO housing; and a lube oil drain return connected to the PTO housing at a sump created at a housing low point, the lube oil drain return receiving oil that collects in the sump below the disconnect clutch assembly to be returned by gravity flow to the transmission case.