Full auto system

Automotive system (ABS, SRS, EBD, BAS, TPMS, EPB, CBC, DTC, ESC, TCS)

On this section you will read:

  1. ABS (Anti-lock Braking System)
  2. EBD (Electronic Brakeforce Distribution)
  3. BAS (Brake Assist System)
  4. SRS (Supplemental Restraint System)
  5. TPMS (Tire Pressure Monitoring System)
  6. EPB (Electric Park Brakes System )
  7. CBC (Curve Brake Control System)
  8. DTC (Dynamic Torque Control System)
  9. ESC (Electronic Stability Control System)
  10. TCS (Traction Control System)

1. ABS (Anti-lock braking system)

Anti-lock braking system is to automatically control the braking force of the brake when the car is braking, so that the wheel is not locked, and it is in the state of sliding on the side (slip rate is about 20%) to ensure the adhesion of the wheel to the ground at the maximum value. On a word, ABS operates by preventing the wheels from locking up during braking, thereby maintaining tractive contact with the road surface.

ABS light
ABS light

2. EBD (Electronic Brakeforce Distribution)

Electronic brakeforce distribution or electronic brakeforce limitation is an automobile brake technology that automatically varies the amount of force applied to each of a vehicle's wheels, based on road conditions, speed, loading, etc.

The ABS must function when the brakes are applied to the wheel lock, and the EBD can achieve a good braking effect by adjusting the rear wheel braking force after the brake pedal is depressed, to reduce unnecessary ABS. Action, or prevent the wheel from locking when the ABS fails due to a special fault condition, increasing the protection range.

ebd
With EBD and Without EBD

3. BAS (Brake Assist System)

Brake Assist System identify the braking behavior of the driver and initiates the full braking effect when it identifies an emergency situation. So reduces the braking distance substantially.

In daily driving, more than 80% of the rear-end accidents are caused by the driver's braking force is insufficient, and it is too late to achieve emergency braking. With the BAS brake assist system, when the computer detects an emergency braking condition, it responds instantaneously and provides additional super-high auxiliary braking force to help the driver achieve the shortest safe braking distance and effectively reduce the chance of rear-end collision.

4.SRS (Supplemental Restraint System)

SRS stands for Supplemental Restraint System which is the proper name for the Airbag System in your vehicle. The Supplemental Restraint System (SRS) light on your dashboard lets you know that your car's airbag system is working, by illuminating for a few seconds when you turn the car on. It can also alert you to problems with the system by flashing while the car remains on.

srs
SRS light

5. TPMS (Tire Pressure Monitoring System)

A tire-pressure monitoring system (TPMS) is an electronic system designed to monitor the air pressure inside the pneumatic tires on various types of vehicles. TPMS report real-time tire-pressure information to the driver of the vehicle, either via a gauge, a pictogram display, or a simple low-pressure warning light. Tire pressure monitoring is automatically performed on the four wheels independently when the vehicle is running, and the tire leakage and low air pressure are alarmed to ensure driving safety.

tpms
TPMS light

6. EPB (Electric Park Brakes )

The Electric park brakes system has become a standard in the latest class of luxury cars. The Audi A6 and BMW 5 Series use EPB systems. The EPB realizes the braking after parking by electronic control. The braking force is constant, and there is no deviation due to the difference between the driver's pull handle and the foot brake. There is no need to worry about the slippage of the vehicle when parking on the slope. It also reduces the damage caused by the different strengths of each brake. Most importantly, the electronic brakes automatically release two seconds after each start. In the daily driving process, almost everyone will have the phenomenon of forgetting to loosen the handbrake or the foot brake after starting, which causes serious wear of the brake disc, and the electronic handbrake can completely avoid this situation.

EPB
EPB

7. CBC (Curve Brake Control System)

When the vehicle is driving in a corner, the brakes are used at the highest frequency, and the driving force of the four wheels of the vehicle is different. If the braking force of each wheel is the same in the curve, it will affect the precise steering of the vehicle itself. The CBC corner brake control system can ensure the safety of driving by ensuring that the vehicle does not understeer or excessively when the vehicle is braking in a corner, by independently distributing the braking force between the four wheels.

8. DTC (Dynamic Torque Control System)

When the vehicle is driving at high speed, if the driver releases the throttle and the engine is driven by the drive system, the reverse direction will occur, forming an inactive braking force that affects the normal inertial running and taxing of the vehicle. The DTC dynamic torque control system automatically increases the engine output torque to avoid torque drag due to engine braking to avoid inactive braking of the body.

9. ESC (Electronic Stability Control System)

Through the control of the torque output of the engine and the independent distribution of the four-wheel brake force, it is possible to intervene in correcting and returning the body dynamics when the wet road conditions and driving control errors are made, so as to reduce the accident of the vehicle being out of control.

ESC
With ESC and without ESC

10. TCS (Traction Control System)

This system is fitted on most modern vehicles and helps to reduce tire or wheel slip during acceleration on loose or slippery surfaces.

It can suppress the uncontrolled slippage of the vehicle during the start or acceleration of the slippery road surface, and avoid the vehicle from getting out of the control. According to Traffic Police Bureau, the accident rate of rainy days is 3.7 times that of sunny days, and more than 45% of rainy accidents are caused by uncontrolled skidding, so more and more TCS traction control systems are relied on and valued by drivers!

tcs
TCS light

Source: https://www.obdprice.co.uk/blogs/news/automotive-system-abs-srs-ebd-bas-tpms-epb-cbc-dtc-esc-tcs

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