When the throttle is opened large, the engine speed boosts, and the pump moves speedier projecting the oil towards the turbine. Slippage consumes power throughout the coupling section. Locking the converter shell towards the turbine shaft helps prevent this slippage from taking place. Antique illustration of adaptor transmission gearbox. ilbusca https://torqueconverterclutch83681.full-design.com/a-review-of-torque-converter-clutch-76378661