Sequental gearbox, device, advantages and disadvantages

Most people who are interested in the automotive industry are used to that the vehicle can move or using a manual gearbox, where all the switching is made directly by the driver from the automotive salon, or with its more comfortable analogue - automatic transmission, which itself switches speeds. But in the automotive market there is a proposal for motorists who want to combine the convenience of the automaton and the dynamism of the manual transmission - such a decision is a sequential gearbox.

Sequental gearbox, principle of operation

The main task of the sequential gearbox is a decrease in the interval between transmissions. The use of a sequential box as a transmission makes it possible to achieve this not only with the help of the maximum simplification of the switching procedure, but, thanks to the absence of a need for a motorist independently control the clutch. The lack of adhesion as an additional pedal gives a great advantage as novice motorists who are quite difficult to get used to all the nuances of driving process and professionals operating the vehicle on the border of its capabilities, where every second is a lot of lost in the process of overclocking time.

In fact, the sequental gearbox has a clutch is also present, but the management of them is performed using an individual electronic unit, which himself calculates, based on the power of the motorist on the accelerator pedal and the current vehicle speed, which transmission is currently the most optimal.

This unit provides a transmission signal where speed definition sensors are located. The next and end point of sending a signal after processing by sensors is a progressive unit.

Sequental gearbox and mechanical gearbox that they have in common

The basis of the sequential transmission is the usual mechanical transmission, which was improved.

The main difference between the sequential gearbox from the MCPP and the automatic transmission

At the heart of the design of the sequential gearbox, the gears are pissed, which is its main distinguishing feature from the manual transmission, where they are taken as the basis of osostic. This difference is the advantage of the sequential box, since the booming gears, in contrast to the osostic analogs, practically does not create friction in the process of functioning the gearbox.

Progressive block of sequential gearbox, what is the importance of the progressive block

The progressive unit of the sequential gearbox, which is responsible for the correction of information about the operation of the engine. In addition to information about the vehicle speed, the progressive unit also processes data on the operation of all components of the comfort unit and, based on the combination of information obtained, makes calculations in the field of motion optimization.

Sequental gearbox, design features

The diameter of each gear of the sequential gearbox is slightly increased compared to those that are used for the manual transmission, which makes it possible to transmit more torque on wheels. Another characteristic feature of the sequential gearbox is the use of hydraulic servo. Uncommonled motorists sometimes confuse hydraulic servos with automatic gearboxes, which makes a mistake, as the design, efficiency and the working principle, as a result, differ significantly.

The main advantages of the sequential gearbox

  • High gear shift speed is the main advantage of a sevenual type gearbox. Speed \u200b\u200bchange in fact occurs instantly - only in 150 m / s. The cause of such a high indicator is already listed before the design features of the box - hydraulic servo, as well as gears with increased diameter and straight teeth.
  • When switching, the vehicle speed is not lost - transmission switches with instantaneous speed, and their shift does not affect the dynamics of the vehicle movement.
  • The maximum number of revolutions is achieved very quickly - the sequential gearbox interacts better with the power unit of the vehicle, due to which the gear shift occurs in the most optimal range of engine speeds.
  • There is no recoil in the hand of a motorist in the form of vibrations and oscillations - due to the established mechanism of sequential gearbox, this kind of discomfort will not disturb the car owner with a similar box.
  • Reduced fuel consumption, due to the constructive features of the CAT.

The main disadvantages of the sequential gearbox

  • Regarding rapid wear - as on cars with sequental checks, as a rule, it is very fast, with a similar mode of movement and the aggressive driving manner persist constantly, then this entails frequent breakdowns and subsequent appeals to the service station. Although the electronic load distribution unit in the sequental gearbox is an advantage of acceleration, it may also cause a malfunction, since any late transmission switching completely disrupts the desired algorithm and entails the destabilization of the entire system.
  • The price of consumables, as well as the work on their installation / replacement - in the same way as in the situation with the electronic unit, the design components of the sequential gearbox are the advantage of talking about high-speed characteristics, however, the cost of repairing these mechanisms cannot be attributed to the advantages of this type of transmission . To replace something in it yourself - also a dubious prospect for a car owner with a sequential gearbox.

Future prospects for sequential gearbox

Sequential gearbox can be deserved to call the result of the long-term evolution of the transmission. It combines the benefits of automatic transmission and manual transmission. As a result, this system minimizes fuel costs and provides excellent acceleration potential.

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