PLATE A.-FRONT 1N8358 - Caterpillar

Illustration 1 g00465167
(1) Flywheel (2) Ring gear (3) Housing (4) Impeller (5) Inlet passage (6) Carrier (7) Yoke (8) Output shaft (9) Outlet passage (10) Stator (11) Turbine (12) Sun gear (13) Planetary gears (14) Planetary carrierThe torque divider is a unit of a planetary gear set and of a torque converter turbine.The torque divider connects the engine to the planetary transmission. The connection is both a hydraulic connection and a mechanical connection. The hydraulic connection is through the torque converter turbine. The mechanical connection is through a planetary gear set.The torque converter uses oil from the torque converter charging section of the pump in order to multiply the torque to the transmission. When the machine works against a low load, the torque multiplication is low. When the machine works against a high load, the torque multiplication is higher. A higher torque can then be sent to the transmission during high load conditions.The planetary gear set also multiplies the torque from the engine by increasing the mechanical advantage through the gears. The torque multiplication increases as the load on the machine increases.During no-load conditions, neither the torque converter nor the planetary gears can multiply the torque from the engine.The torque divider is installed onto engine flywheel (1). The torque divider housing is installed on the engine flywheel housing. Output shaft (8) is connected to yoke (7). Yoke (7) is connected to the planetary transmission through a drive shaft.These components are the main components of the planetary gear set: sun gear (12), planetary carrier (14), planetary gears (13) and ring gear (2) .Sun gear (12) is connected to the flywheel by splines. Planetary gears (13) are mounted on planetary carrier (14). The planetary gears are engaged with sun gear (12) and with ring gear (2). These components are the main components of the torque converter: housing (3), impeller (4), turbine (11) and stator (10) .Housing (3) is connected to flywheel (1) by splines. Impeller (4) is connected to housing (3). Turbine (11) is connected to ring gear (2) by splines. Stator (10) is connected to carrier (6). The stator cannot turn.Torque Converter Operation
Oil for the operation of the torque converter flows through inlet passage (5) in carrier (6) to impeller (4). The rotation of the impeller gives force to the oil. The impeller sends the oil toward the outside of the impeller, around the inside of housing (3), and to turbine (11). The force of the oil against the blades of the turbine turns the turbine. Since the turbine is connected to ring gear (2), torque is sent to planetary gears (13). The torque that is sent to the turbine by the force of the oil from the impeller can not be more than the torque output of the engine to the impeller. The oil that is flowing from the turbine moves in a direction that is opposite to the rotation of impeller (4). Stator (10) changes the direction of the oil. The stator is connected to carrier