HEXA

TRANSMISSION 10 Torque Converter: The mechanical power flow in the transmission begins at the point of connection between the torque converter and the engine flywheel. When the engine is running, the torque converter cover (pump) is forced to rotate at engine speed. As the torque converter rotates it multiplies engine torque and transmits it to the turbine shaft. The turbine shaft provides the primary link to the mechanical operation of the transmission. The torque converter clutch has an electronically controlled capacity clutch (ECCC). ECCC was developed to increase range of operation of the torque converter clutch operation to increase fuel economy and drivability. In a torque converter with ECCC, the pressure plate does not always fully lock to the torque converter cover. Instead, the pressure plate maintains a small amount of slippage. The typical slippage range is from 20 to 50 RPM or full lockup (0 RPM slip). Oil pump: The fluid pump assembly (5) contains a variable displacement vane (6) type pump, located in the torque converter housing (1). When the engine is cranking, torque converter pump hub, which is keyed to the fluid rotor (2), turns rotor at cranking speed and pressurize the hydraulic system. Fluid from the transmission bottom pan is drawn through the fluid filter assembly and into the fluid pump suction fluids circuit. This fluid is then forced to rotate around the fluid pump slide (4) to the pump outlet port.