What is Semi-Automatic Gear? Differences with Fully Automatic Gear

There are two main gear options in cars: Manual and automatic transmission. There are two different options for automatic transmission, fully automatic and semi-automatic. So what is this semi-automatic transmission? What are the differences between the fully automatic transmission? We have answered these questions for you. Welcome.

Anyone who loves to drive, or who needs to drive for work or necessity, knows that the gearbox is divided into manual and automatic transmission. Automatic transmission vehicles, which are becoming more popular due to the convenience they offer, are also divided into two: Fully automatic transmission and semi automatic transmission. If you’ve ever thought they were the same thing, you’re wrong.

In this content for you ‘semi automatic transmission what?’ We will answer the question and explain the differences between semi-automatic transmission and fully automatic transmission. In our content, we will also talk about the advantages and disadvantages of the semi-automatic gearbox. Let’s start without further ado.

What is a semi-automatic transmission?

Before answering this question, first of all, in order to explain the subject more clearly, ‘what is gear’ Let’s answer the question. To put it simply, the gear, transmission or gearbox is the mechanism that regulates how much power is given in the process of transferring the energy transmitted to the engine of the car to the wheels. Every time a gear is changed the power transferred to the wheels changes. This process is done by the driver in manual transmission vehicles, and by the mechanisms referred to as robots in automatic transmission vehicles.

The clutch is needed to change the gear. In manual transmission vehicles, the leftmost pedal is the clutch pedal and the driver must change gear by pressing this pedal. This is where the first difference of automatic transmission vehicles emerges: In automatic transmission vehicles, there is a driver under the control of the driver. no clutch pedal and the vehicle automatically keeps the clutch ready.

Semi-automatic transmission vehicleshas the same gearbox structure as manual transmission vehicles. The difference between these two-speed vehicles, which have the same pressure pad system, is that semi-automatic vehicles do not have a clutch pedal. In semi-automatic transmission vehicles, which operate like a manual transmission vehicle and whose fuel consumption and performance are almost the same as manual transmission vehicles, gear robots provides.

What is the difference between semi-automatic transmission and others?

semi-automatic transmissions

One of the biggest differences of the semi-automatic gearbox is that the driver can control the gear according to his wishes. How? Let’s explain right away. We have said that the gear mechanism in semi-automatic vehicles is actually the same as in manual transmission vehicles. In these vehicles, only the clutch works automatically. Therefore, the driver can change the gear of the car by choosing between automatic and manual transmission. he can control himself.

Next to or above the gear of semi-automatic vehicles P (Park), N (Neutral), R (Reverse) D (Drive) and M (Manual/Straight) You can see the letters. When you shift the gear to the D position, the vehicle starts to shift gears automatically. When the gear is in the M position, the driver can control the gear as he wishes. Of course, if the driver does not shift gear after a while, the vehicle will intervene and change gears automatically.

What is a dual clutch transmission?

double clutch transmission

Gear structure in single-clutch automatic transmissions is the same as in manual transmissions. Gear shifts can be felt more. In this system with a single pressure pad, sometimes all gears of the vehicle will be dependent on this clutch. hitches and tabs it could be. The gear structure of dual-clutch transmissions is the same as that of manual transmissions, but gear shifting takes place differently.

Dual clutch transmissions have double thrust pads. In this type of transmission, the first pressure pad first, third, fifth and seventh The second pressure pad is responsible for shifting the gears, while the second, fourth, sixth and eighth gears are in charge. This is why gear shifts are less felt in dual-clutch transmissions.

We can summarize the working principle as follows: The first pressure pad releases the clutch after you put the vehicle in 1st gear. Gear shifts are felt more in single-clutch transmissions as this pad activates the clutch again when shifting to 2nd gear, but in dual-clutch vehicles, this feeling is much less because the second pressure pad is waiting for the clutch to be active. Same way when the vehicle is shifted into 2nd gear The first pressure pad prepares the vehicle for 3rd gear and the clutch is ready.

Semi-automatic gearbox advantages and disadvantages:

semi-auto transmission advantages

  • Advantages:
    • It consumes less fuel as it has the same structure as a manual gearbox,
    • Its performance is close to manual transmission vehicles,
    • It is very comfortable in daily use,
    • Gear shifts are almost imperceptible in dual-clutch semi-automatic transmissions.
    • The gear can be changed according to the driver’s request,
  • Disadvantages:
    • Gear shifts can be felt much more in single-clutch semi-automatic transmissions,
    • Semi-automatic transmission vehicles without hill start assist shift on a slope,
    • Sales prices are more expensive than manual transmission vehicles,
    • The clutch system may wear more easily in single-clutch semi-automatic transmissions.

Semi-automatic transmission may seem more advantageous because it contains the basic principles of both manual transmission and fully automatic transmission. Especially in dual-clutch semi-automatic transmissions Many manufacturers prefer this gearbox because gear shifts are not felt much. A feature that is in full automatic but not semi-automatic is the default anti-scroll feature on the slope. If the vehicle does not have start assist, semi-automatic vehicles can shift on slopes. There is no such thing in full automatic.

What is a semi-automatic transmission We have come to the end of our content in which we answered the question, explained the differences between the fully automatic gear and compiled the advantages and disadvantages of this gear compared to the others. Which gearbox type do you prefer? You can share it with us in the comments section. Stay tuned so you don’t miss more of our content like this.


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