Patent ID: 11906036
Assignee: EATON CUMMINS AUTOMATED TRANSMISSION TECHNOLOGIES LLC
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. A transmission, comprising:
a housing;
an input shaft and an output shaft disposed in the housing and being drivingly connected to one another by a plurality of gears disposed in the housing;
a lubrication system including an oil sump, an oil pump and an oil passage system for directing oil from the oil sump to various components of the transmission;
the oil passage system including an oil passage having an oil outlet opening extending out of the housing and an oil inlet opening extending into the housing, wherein a bypass flow passage is disposed in the housing in communication with the oil outlet opening and the oil inlet opening;
a heat exchanger having an inlet passage connected to the oil outlet opening, the heat exchanger having an outlet passage connected to the oil inlet opening;
a cooler bypass assembly disposed in the oil outlet opening, the bypass assembly including an oil cooler bypass spool biased by a spring to a first position for at least restricting flow through the bypass flow passage, wherein the oil cooler bypass spool is movable against the force of the spring to a second position for fully opening the bypass flow passage; and
wherein the cooler bypass assembly further includes a cartridge main body having a passage extending axially there through, wherein the oil cooler bypass spool and the spring are disposed in the passage in the cartridge main body.