192 clutches and power-stop control – Elements – Lubricating – insulating – or cooling
Patent
1995-01-20
1998-04-14
Marmor, Charles A.
192 clutches and power-stop control
Elements
Lubricating, insulating, or cooling
192 329, 192107R, F16H 4502, F16D 1372
Patent
active
057381984
ABSTRACT:
A friction element which can be used in the lockup clutch of a hydrokinetic torque converter and has a friction face engaging a complementary friction face when the clutch is at least partially engaged is provided with one or more channels which are machined, impressed or otherwise formed in its friction face to permit a fluid coolant to flow from a first compartment containing a pressurized fluid into a second compartment wherein the fluid pressure is lower. Each channel includes at least one fluid flow restricting portion which communicates with the first compartment and establishes a turbulent flow of fluid into a major portion of the respective channel. The major portion is designed to establish a laminar flow of fluid toward one or more outlets communicating with the second compartment. The reduction of pressure differential between the fluid in the first compartment and the fluid in the second compartment is effected by the respective fluid flow restricting portion or portions, either entirely or substantially entirely. This ensures a more satisfactory exchange of heat between the fluid in the major portion of each channel and the adjacent parts of the clutch.
REFERENCES:
patent: 2020748 (1935-11-01), Waseige
patent: 3094194 (1963-06-01), Kershner
patent: 3198295 (1965-08-01), Fangman et al.
patent: 3805935 (1974-04-01), Armstrong
patent: 4027758 (1977-06-01), Gustavsson et al.
patent: 4969543 (1990-11-01), Macdonald
patent: 5056631 (1991-10-01), Macdonald
Walth Ernst
Weidner Georg
LuK Getriebe-Systeme GmbH
Marmor Charles A.
Rodriguez Saul
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