ST 2.3 Double Cab Pickup
- Year/Month: 2017/0
- Stock ID: T120218
- Transmission: Automatic
- CC: 2300
- Mileage: 25350
- Fuel Type: Diesel
- 126 Views
The Torque converter inside used Nissan double cab for sale should allow you to transfer the engine torque to the gearbox. It is a hydraulic component that uses the combination of a pump and a turbine, both composed of a radial impeller, in which a low-viscous fluid flows. The motor is connected to the driving impeller which transmits the motion to the fluid; the energy possessed by the oil then feeds the turbine which in turn transmits it to the gearbox.
The Power Conservation
Furthermore, there is a stator between the turbine and the pump, mounted on a freewheel that allows rotation in one direction only: the latter diverts the oil flow so as to increase the torque between inlet and outlet obviously reducing the speed of rotation for power conservation. Low torques and high rotation speeds turn into higher torques at lower speeds. This increases with the speed difference between the two impellers: the effect is therefore maximum in the starting phases. If the speeds are similar, however, the torque converter behaves like a hydraulic coupling. Please note that, the topic is technical but its quality had direct effects on used Nissan double cab price, so be alert for that.Â
The Hydraulic Aspect
When the engine idles, the hydraulic pump provides too low torque to transmit movement to the second impeller; this allows the car to stand still or move only slightly when the accelerator pedal is not activated; sometimes just a small pressure on the brake control to avoid starting, etc. The action of the fluid, then, guarantees very gentle starts from a standstill. The first torque converters, due to the intrinsic nature of the hydraulic operation, were characterized by slippages and obvious losses, especially at high speeds: part of the energy is dispersed during the transmission of motion between the two impellers, to the detriment of consumption and of benefits. To overcome this problem, on the most modern automatic transmissions there is a clutch which, when activated, rigidly connects the two impellers i.e. lock-up action, avoiding slippage at a constant speed.Â
The Traditional Way
Another problem concerns the phases of the engine off; in these situations, there is no locking effect given by the ‘gear engaged’ of traditional manual transmission, since the engine and gearbox are disconnected if the converter fluid does not move. It is for this reason that the parking function is present on modern cars, indicated with the letter P, which blocks the transmission in the event of a prolonged stop. Once the motor torque reaches the second impeller, it is transferred to the gearbox, consisting of planetary gears. This term means a transmission member formed by a central input gear, called pinion or sole, two or more intermediate satellites connected together by a satellite carrier (the planetarium) and an outer ring with an internal toothing, called crown. The peculiarity of this system is the possibility of choosing to alternately block the sun, the crown or the planetarium, so as to obtain different reduction ratios such as two positive and one negative, that is with inverted rotation suitable for the rear.
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