BMW Z4 2.5 For Sale From UK At Reasonable Price
The Owner Of BMW Z4 2.5 For Sale Should About The Torque Converter
Before the diffusion of dual-clutch gearboxes and auto gearboxes, an internal combustion engine car could only be equipped with two different types of transmission (except for rare and eccentric cases): the classic manual gearbox with mechanical couplings or the traditional automatic transmission composed of planetary gears. Although the two different changes were radically different from one another both in design and construction, they had a common requirement deriving from the need to adapt to the conditions of everyday life: that of having the possibility of decoupling the engine from the transmission under certain conditions. The discussion is technical but a buyer or owner of BMW z4 2.5 for sale should know about that for better care of his used car.
Driven By The Flywheel
A necessity deriving, trivially, from the fact that the engine had to be free to continue to run at the minimum during the short stops: in the queue, at traffic lights, at the Stop, at level crossings and so on. In the mechanical gearbox this task was (and still is) performed by the clutch, traditionally controlled by the left pedal; which, if pressed, moves the disc driven by the flywheel away from the one integral with the transmission primary. In the automatic gearbox, the task of decoupling the transmission and engine is, on the other hand, carried out by the object that is known as the torque converter. But what is the torque converter? An approximate basic definition could be this: The torque converter is an evolution of the hydraulic coupling. To understand what the torque converter is for and how important its advent was, it is necessary to have a precise idea.
The Task To DeCouple
Initially, there was a non-auto box inside the car; The task of decoupling the engine and transmission during the short stops was entrusted to a hydraulic joint. The hydraulic joint was composed of two components contained within a hydraulic chamber; a centrifugal pump and a turbine. The hydraulic chamber was nothing more than a container with a shape similar to that of a sealed toroid, fixed to the flywheel of the engine and containing inside it a liquid called ATF ( Automatic Transmission Fluid); the same that circulates inside the automatic transmission and allows the automatic selection of the ratios) which has the property of being not very viscous. In this sense, it should be noted that the fluids for automatic transmission normally used have usually a particular viscosity. So, if you want to have the reasonable BMW z4 2.5 price as a resale value or buy any used vehicle, the discussed info should be helpful for you because better awareness about auto and auto parts will lead to error-less act and decision.
The Turbine & The Torque Converter
The pump that is the part of Torque converter consisted of a radial impeller, welded to the converter chamber on the opposite side to that of the flywheel, which by rotating pushes the fluid due to the centrifugal force; the turbine is instead integral with the driven part, that is to the input shaft of the automatic gearbox. so, it can be stated that the turbine impeller is the same as that of the pump, but with the vanes positioned in the exact opposite direction. The pump and the turbine face each other, but they are absolutely not in contact: the energy was transferred from the impeller to the fluid by means of the centrifugal force alone. The fluid, then, hitting the turbine blades, discharged its energy on it; which in turn transmitted the driving force to the automatic gearbox through the transmission input shaft, thus allowing the car to move.
