Modern cars have become more and more widely used in the electronic control of machinery. From basic electronic direction to complex active steering proportional control, these have been mainly hydraulic and mechanical control, and gradually approached to electronic control, the driver The parts that can come from the main control through direct mechanical connections have become less and less. Among the few virgin land left, even the handbrakes that control the enthusiasts' love are gradually falling into the "magic palm" of electronic control.
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However, since more and more models are equipped with the functions of electronic handbrakes, it has gradually been accepted. From the past high-end luxury level to the model within 200,000, you can see the high hopes of this technology.
Today we will take a deeper look at the principle of the electronic handbrake and its advantages and disadvantages in use, for your netizens as a reference when buying a car.
Electronic hand brake working principle -
The electronic handbrake is also the electronic parking brake system. The Electronic Park Brake (EPB) is a technology that integrates temporary braking during driving and long-term braking after parking, and implements parking braking electronically.
The electronic handbrake is a technology that realizes parking brake by electronic control. The working principle is the same as that of the mechanical handbrake, which is controlled by the friction between the brake disc and the brake pad to control the parking brake, but the control mode has changed from the previous mechanical handbrake lever to the electronic button.
From the basic parking function from the electronic handbrake to the automatic parking function AUTO HOLD. The use of the AUTO HOLD automatic parking function technology allows the driver to brake without stopping for a long time while the vehicle is parked. In the case of starting the automatic electronic parking brake, it is possible to avoid unnecessary taxiing of the vehicle, which is simply that the vehicle does not slip.
The traditional handbrake needs to rely on the driver to manually release the hand brake or the skilled throttle and clutch to start comfortably when starting the slope. The AUTO HOLD automatic parking function gives the accurate parking force by the controller through the slope sensor. At the time of starting, the parking control unit passes the information provided by the clutch distance sensor, the clutch pinch speed sensor, the accelerator pedal sensor, etc. When the driving force is greater than the driving resistance, the parking brake is automatically released, so that the car can start smoothly.
Even if you stop in the city, you will start the corresponding automatic parking function as long as you enable the AUTO HOLD function. The intelligent AUTO HOLD automatic parking function allows the vehicle to automatically start the four-wheel brake when waiting for a red light or parking up and down. Even in the D or N position, you don't have to keep pressing the brakes or use the handbrake. The car is always in the car. Stationary state. When you need to release the static state, you can also release the brake by simply tapping the throttle. This configuration is practical for those who often stop and go in the city, and it also reduces some unnecessary accidents caused by numbness.
Several models with electronic handbrake functions that are common in the market -
Commonly used models with electronic handbrake functions on the market are also common models, such as Volkswagen's Magotan, Audi A4, A6 and New Regal. The use of the electronic handbrake is similar, and the function of turning off the handbrake is activated by a button. The electronic handbrake can be started under any condition of the vehicle. Even if it is accidentally pressed during the travel, the electronic handbrake function will be immediately turned off because the throttle is still in the working position; if it is pressed during the emergency braking, most of the electronic handbrake system Additional braking force is provided to assist, and some models have electronic brake force distribution and speed limit stop function.
When the electronic handbrake is turned off, all the models need to be in the state of stepping on the brake pedal, so that for the automatic transmission type, it is possible to avoid accidents caused by the intention of the traffic jam. However, adding such a restriction to the manual transmission model seems to be redundant, and the basic function of the hand brake for the start of the slope is wasted. For example, in the magotan 1.8T manual gear we found this chicken rib, I don't know what your opinion is?
In the automatic transmission models of the Volkswagen and Audi series, the electronic hand brake system also incorporates the AUTO HOLD automatic parking function mentioned above. This function may have an adaptation period at the beginning, especially when starting, when the throttle is depressed and the brakes are not released in time, the time is particularly needed. However, in general, the advantages outweigh the disadvantages. The liberated right foot and right hand can do a lot of things during the traffic jam... Anyway, it is not a bad thing.
Summary of advantages and disadvantages -
After the above introduction, I believe that everyone has a certain understanding of the working principle and functional usability of the electronic handbrake, but everything has advantages and disadvantages, we will talk about the positive side first!
For the car manufacturer, the emergence of electronic handbrakes can save a lot of traditional handbrake parts. Although the traditional handbrake parts are not necessarily advantageous in price compared with the electronic handbrake assembly, the space saved (usually saving the position in the middle of the front row) can be more useful; the entire electronic handbrake work module can It is used on most models to reduce production costs and to spread this technology to lower-level models.
For the driver, the appearance of the electronic handbrake, especially the appearance of AUTO HOLD, can reduce the burden of the right foot and the right hand in the traffic jam; eliminate the lack of strength to pull the hand brake (especially some petite ladies) inconvenient.
The most important point may be that many netizens will ignore that the traditional handbrake will only lock the rear wheel. In addition to the need for the tail, the author really can't think of the need to pull the handbrake during driving. If the emergency brake is needed during driving, press the handbrake button, the electronic handbrake will select the appropriate braking force according to the speed of the vehicle to ensure the safety of driving, thus further improving the active safety performance. However, I believe that I can drive this person in an emergency.
The shortcomings are more of a personal preference. Without the handbrake, you can't control the dynamics of the car's tail. You can't afford a big horsepower after driving. The right to occasionally make a tail is also stripped off, or ask the driver to drive. Alright. In addition, the function of the electronic handbrake will also be a problem when the battery fails. The convenience brought by the electronic parts of the whole car may cause great trouble in a small aspect.
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