Abstract: An automatic transmission having high pressure actuation and low pressure lube includes a hydraulic circuit (110) having a source of pressurized fluid (112), an actuation circuit (114) that delivers pressurized fluid to actuate components of the transmission, and a cooling circuit (116) used to cool components of the transmission. The source of pressurized fluid includes a motor 118, a first pump 120 operatively driven by the motor 118, and a second pump 122 selectively driven by motor 118. A clutch mechanism 124 is connected between the motor 118 and the second pump 122 so as to selectively engage and disengage the second pump 122 in driven relationship with the motor 118 so that the second pump 122 selectively supplies pressurized fluid to the cooling circuit 116 when the clutch mechanism 124 is engaged.

Abstract: A number of variations may include a freewheel device having a switchable freewheel which may include a first race, a second race, locking elements arranged between the first and second races and a locking element cage for receiving the locking elements which may be rotated relative to the first race, and comprising a switching device by means of which the locking element cage may be rotated to a first rotational position relative to the first race in which the first race is in rotationally entraining connection to the second race via the locking elements in a first direction of rotation relative to the second race, and to a second rotational position relative to the first race in which the first race is not in rotationally entraining connection to the second race in the first direction of rotation relative to the second race, the switching device being formed by a first planetary gear, a second planetary gear and a switching drive.

Abstract: An automatic transmission having high pressure actuation and low pressure lube includes a hydraulic circuit (110) having a source of pressurized fluid (112), an actuation circuit (114) that delivers pressurized fluid to actuate components of the transmission, and a cooling circuit (116) used to cool components of the transmission. The source of pressurized fluid includes a motor 118, a first pump 120 operatively driven by the motor 118, and a second pump 122 selectively driven by motor 118. A clutch mechanism 124 is connected between the motor 118 and the second pump 122 so as to selectively engage and disengage the second pump 122 in driven relationship with the motor 118 so that the second pump 122 selectively supplies pressurized fluid to the cooling circuit 116 when the clutch mechanism 124 is engaged.