The multiple plate brakes and those multiple plate brakes of the automatic gear which has control possible cooling oil supply the method of operating

摘要

A method for cooling a wetplate disc brake in an automatic transmission has the cooling fluid passed radially over the discs in either radial direction depending on the setting of the brake. If the inner and outer brake discs are rotating with relative speeds the radial cooling is via centrifugal force. If the discs are rotating with low relative speeds, or/are clamped together, then the radial cooling is via a pumped supply from directed radially inwards. The coolant circuit is effective between outer axial seals.