Working of Torque converter and also Torque multiplication.
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This topic completely explains about the working of a torque converter, Torque converters are used in automatic transmission vehicles. It replaces the clutch which is used in the manual transmission vehicles. Automatic transmission helps the driver for a smooth drive by avoiding the usage for clutch pedal for gear changing. Torque converter is a fluid coupling, which utilizes the centrifugal force exerted in the transmission oil to transmit power from the engine to the gearbox. It multiplies the torque from the engine and functions as a combined clutch and infinitely variable reduction gearbox. Which are the major components of a torque converter?Impeller (pump),Turbine, Stator. Where is the torque converter mounted?As it was mentioned earlier the torque converted is a fluid coupling (a concealed unit with fluid inside). It has impellers on one side and turbine on the other side with stator at the centre. As the torque converted is mounted on the flywheel, it rotates at the same RPM of the engine. When looking from the rear of the vehicle to the engine it rotates in the anti-clockwise direction. Due to this rotation, the fluid inside the torque converted acquires a momentum. It gains a centrifugal force and the impeller works as a centrifugal pump which throws the fluid through the veins at the casing of the impeller. This fluid comes and hits the turbine. As turbine is a free unit which can rotate it starts to rotate and the torque produced is carried out to the transmission through shaft connected to the turbine. This is how the torque produced by the turbine is transferred to the transmission.If we monitor closely we can see that the fluid flow received by the turbine changes its direction when it passed thought fins and direct it back to the impeller. If this reverse flow comes and hit the impeller it may slow down the impeller, if impeller slows down it will slow down the engine as it is mounted to the flywheel of the engine. To avoid this from happening we have a stator in place. The stator is so designed that it will again reverse the flow coming from the turbine to reach the impeller in a positive direction of the vanes of the impeller, which will not slow down the impeller which results in a smooth working.It happens when the torque converted is stalled. That means when the engine is working and the turbine is locked or turbine staring to slow down compared to impeller torque multiplication happens. When we apply brake while engine is working the turbine is stopped as the shaft connected from the turbine to the shuttle reverser of the gear box is locked. This make the fluid coming from the impeller hits the turbine and again gets redirected by stator to the impeller, which results in the addition of velocity of the fluid flowing. In different cycles this velocity adds up resulting in the accumulation of torque on the turbine this results in torque multiplication (as the same with, when the speed of the turbine is reduced compared to the speed of the impeller the flow will get redirected through the stator to the impeller and again to the turbine this also result in torque multiplication due to velocity addition) So when the brake is released the accumulated torque is carried away by the shaft of the turbine to the transmission. This helps the vehicle to attain a higher speed when it moves from a stop or brake.Advantages of torque converter:Drivers comfort,Can attain a high speed from a stop or brake, No mechanical bonding between engine and transmission therefore, the flexibility of the torque converted drive greatly reduces wear on the transmission, absorbing shocks and torsional vibration from engine, Engine cannot be stalled due to overloading as fluid coupling slips.Disadvantages of torque converter:Mileage will be less, If turbine is stalled as the impeller is rotating, all the power is dissipated as heat, If torque converted is stalled for more than 10 seconds continually for various cycles, it may result on the failure of the one way clutch of the stator due to over heating.
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i can't understand this dude he talks to fast and has to much accent
pride256 3 weeks ago
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Techtrixinfo 1 week ago