Synchronized gearbox is used in almost all geared cars today.
Those who have the experience of driving old cars, know very well that it was not so easy to change gear with them.
Automakers solved the problem of gear shifting in manual transmissions by adding a functional part called a synchronizer.
In this way, a new type of manual gearbox called synchronized gearbox was made.
In this article, we are going to examine how this type of gearboxes work.
We invite you to stay with us until the end.
1# What is a synchronized gearbox?
There was a big challenge in the early generations of manual transmissions.
Imagine you are driving in 3rd gear.
Then you run into traffic and have to slow down.
In this case, you must put the car on the 1st gear to continue moving.
For this purpose, you hold the clutch and change the gear directly from 3rd to 1st.
This was not possible in cars with old manual transmissions;
Rather, you had to change gears one by one.
The story is that to change gears in old gearboxes, while pressing the clutch, the speed of the input shaft of the gearbox is not the same as the speed of the output shaft.
This issue basically increases the possibility of gear misalignment.
When the gear shifts, the speed of the car increases or decreases slowly.
In addition, the possibility of damage to the gears involved on the input and output shafts increases due to rotation at different speeds.
To solve this problem, a part named Synchronizer has been added to the manual transmission system.
This part equalizes the speed of the input and output shafts of the gearbox when the clutch is pressed.
As a result, changing gears in synchronized gearbox is a easier and faster compared to old gearboxes.
2# How does the synchronized gearbox work?
Synchronized gearbox, which is also known as non-sequential gearbox, plays a significant role in the smooth shifting of the car.
The function of this cone-shaped piece makes changing gears fast.
As a result, while increasing the speed, the car accelerates faster.
When the engine starts and the gearbox starts working,
All the gears on the gearbox shafts start turning;
But according to what gear the car is in, only two of the gears are engaged with each other and the rest are free.
By moving the gear lever, you are actually moving the flywheel.
The flywheel also moves the flywheel to align the appropriate gears.
Locking the gears and releasing them is the function of the synchronizer.
The synchronizer is a ring-shaped piece that has the same function as a clutch.
When shifting gears, the ring starts to slide, thereby driving the cone-shaped surface of the synchronizer.
In this way, the gears on the shaft are under pressure.
As a result, during gear shifting, the cone-shaped synchronizer clutch locks the gears together.
In addition, it also makes the speed of the input and output shafts the same in the shortest possible time.
The friction created between the locked ring and the gears of the synchronized gearbox is the factor of equalizing the rotation speed of the shafts.
In this way, a smoother gear shifting experience in a car with a manual transmission . is achieved
3 # failure of the synchronizer in the manual gearbox
Although the synchronized gearbox has a better performance compared to the old gearbox;
But there is usually a possibility of problems for them in the long run.
Of course, the synchronizer is not at all like the consumable parts of the car, including the filter and engine oil.
Perhaps during the time that a car is in your possession, this part will never fail.
Usually, after covering several thousand kilometers, there is a possibility that the synchronizer will have a problem.
The friction between this part and the gears in the long run causes the wear and destruction of the synchronizer.
When this part is damaged, the car’s performance in gear shifting becomes difficult.
Of course, it is not the case that you, as a driver, can realize the failure of the synchronizer.
Because the problem in manual transmission gear shifting may be rooted in various reasons.
By going to the repair shop and opening the gearbox, it is possible to detect the damage of this part.
Usually, it is not possible to repair the synchronizer, and in case of failure, you must replace it.