Function and duty automobile sub-gearbox

Function and duty automobile sub-gearbox

In this article, AutoGroup will give you the most basic information about usage, notes when using “Car sub gearbox”.

As one of the most important components in a car’s powertrain, the gearbox has the role of ensuring the ability to change the gear ratio through changing gears to adjust the torque from the car’s engine. The vehicle is easy to operate and move in different environments and terrain. Although there are many variants now available with more modern and more advanced gearboxes, the role of the gearbox remains unchanged during vehicle operation.

1. Learn about gearboxes and their functions

As a part that transmits power from the engine to the drive system, the gearbox plays the role of changing the gear ratio to change the force from the torque at the wheels while regulating the speed of the car in accordance with the power. bumped from the outside. When the car moves in ideal mode, the transmission plays a role in maintaining stability so that the engine of the car can operate at the best rpm.

Learn about the transmission and the function of the transmission

In addition to the transmission, a car’s sub-gearbox acts as a division of power to the wheels to maintain stability during travel and through difficult roads.

2. Tasks and applications of the sub-gear in practice

  • The duty of the sub-gear

First, the auxiliary gearbox is responsible for changing the gear ratio from the torque located in the car wheels, and at the same time changing the speed of the car to match the external drag.

Mission and application of the sub-gear in practice

Next, the auxiliary gearbox has the role of changing the direction of the car’s movement in either forward or reverse directions.

In addition, the auxiliary gearbox is capable of separating the transmission engine arbitrarily without turning off the clutch opening machine. In addition, the car gearbox also plays a role in driving dynamics out for specialized parts of the vehicle.

For the sub-gear, there are two ways to change it from “H to HL” and “HL to LACL”. Here we will learn about how these two modes are switched in a car’s sub-gear.

  • Mode “H to HL”
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With this mode and vice versa you can switch at any speed, but if you switch to HL mode and the micro-center lock light does not light, drive straight and lighter to ensure safety.

  • Mode “HL to LACL”

For this mode you need to follow these steps to ensure the safety of you and your vehicle.

Step 1: Stop the car

Step 2: Put the main gear lever to “N”

Step 3: Switch the auxiliary gear lever from “HL” to “LL”

In case the rear wheel is rotated due to the groove or moving on the slippery road surface, you should use the ball differential lock, to use the ball differential lock, follow the steps below:

Step 1: Change the transmission lever to “LL” (switch only when the wheels are stationary).

Step 2: Press the rear differential lock button (the switch light comes on)

Step 3: Always ensure the vehicle speed is below 8km / h, turn off the differential lock switch “OFF” right after passing the muddy spot. Do not drive continuously with differential lock switch “ON”.

3. Important precautions for the operation and usage of the auxiliary transmission

The automotive sub-gearbox consists of two different micro-sets, each playing a certain role, specifically as follows:

Center differential: Distributes drive to front and rear axles.

Rear differential: Distribution of transmission for the rear wheels.

  • When the rear differential is locked, the anti-lock brake system will not work while the ABS indicator light will light.
  • In order to improve the economy and the dynamics of the sub-gear car, it must ensure a reasonable and stable transmission ratio.
  • The auxiliary gearbox must possess a high power transmission efficiency to avoid noise when the vehicle is operating, while operating gently, the gears do not collide.

4. The meaning of the symbols on the automobile sub-gearbox that the owner needs to know

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On the sub-gear of the car, there are words with abbreviations for each different mode, here we will list the meaning of the words on the sub-gear for your reference.

“H” (High – high speed position): normal driving mode on dry and hard roads. This regime will bring higher economic efficiency. Help save fuel, reduce noise and corrosion.

“HL” (High Lock – high speed position, central differential lock): Use on slippery terrain such as dirt roads, sand, rough rocks, icy roads or snow covered.

“N” (Neutral – neutral position): The vehicle must stop completely before changing to “N” mode. In this position the power is not transferred to the wheels.

“LL” (Low lock – low speed position, center differential lock): Use this mode when the wheels need maximum power and traction in the following cases: climbing or descending a steep slope, Complex terrain, crossing sand, mud, muddy or heavy snow, used when the vehicle is bogged.

The above are the most basic information on usage as well as notes for use “Car auxiliary transmission” that AutoGroup wants to share with you. Hopefully the information that we bring will provide you with more necessary knowledge about the car.

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