Sunday, December 11, 2011

Automotive active safety equipment safety articles

Disc brakes
Disc brake, also known as disc brakes, whichever shape suggests that it is named after. It consists of hydraulic control, the main components are brake disc, wheel cylinders, brake calipers, tubing, etc. Manufactured with steel brake discs and fixed on the wheel, with the wheels turning. Brake wheel cylinder fixed to the floor fixed and the system 'dynamic clamp on the two friction plates are installed on both sides of the brake disc, wheel cylinder piston by the hydraulic tubing-conveyed to the role of promoting the friction plate to the system pressure dynamic friction brake disc, set to work like pliers clamping rotating plate, forcing it to stop the same.
Disc brake cooling fast, light weight, simple structure, easy adjustment. Especially when the high temperature performance and high load, the braking effect of stability, but not afraid of mud invasion, and poor road conditions in winter driving, drum brake disc brake easier than in a relatively short period of time that the car stopped. Some of the brake disc brake disc also opened a lot of holes to accelerate and improve brake ventilation efficiency.
Anti-lock braking system (ABS)
ABS is Anti-lockBrakingSystem abbreviation. The world's first ABS system is first applied on the plane, and later became a standard limousine, and now most cars are equipped with ABS. As we all know, the brakes can not kick trampled to death, but should step brake, a step on a loose, until the car stopped, but the encounter Jicha, often require emergency vehicles to stop and would like to put one foot in the end to stop car , then as prone to locking wheel does not rotate, so that the car dangerous conditions, such as locking the front wheel causing loss of vehicle cornering ability, rear locking prone to drift accident and so on. ABS brakes installation is to solve the problem when the wheels from locking, ABS equipped vehicles, can effectively control the wheels keep turning on without locking does not turn, thus greatly improving the stability of the car when braking and poor road car under braking performance. ABS is installed on the wheel or shaft speed sensors continuously detect the wheel speed, calculated by the computer at the wheel slip ratio (slip ratio to understand by the car wheels have locking), and the ideal compared to the slip rate, to make increase or decrease the brake pressure of the decisions, orders to adjust the brake actuator pressure to keep the wheel in the desired braking. Therefore, ABS device can make the wheels slip has remained in a weak state of the rolling brake without locking, the purpose to improve braking performance.
Electronic brake-force distribution (EBD)
EBD can be generated when the brake according as the transfer of different axle load, and automatically adjust the front, the rear axle braking force distribution ratio, improved braking performance, and increase with the ABS braking stability. Car braking, four tires attached to the ground conditions are often not the same. For example, sometimes the left front and right rear wheel attached to the drying of the concrete floor, while the right front and left rear wheel is attached to the water or mud, this situation will result in four wheel vehicle braking friction with the ground not the same, often caused by braking skid, tilt and vehicle rollover accident. EBD brakes with high-speed computer in the car the moment, four tires were attached to the different ground sensors, calculations, different friction values, the four tires of the braking device according to different situations in different ways and braking force, and constantly in motion high-speed adjustment, so as to ensure smooth traffic and safe.
Traction Control System (TCS)
TCS also known as traction control system. Car braking on slippery roads, the wheels will spin, and even the direction of the out of control. Similarly, the car started, or hard acceleration, the wheel may also be slipping in the snow and ice on the road will smooth out the direction of control risk. T <paw ÷ is designed for this problem. TCS to rely on electronic sensors to detect wheel speed is lower than the driven wheel (this is; slip characteristics), will send a signal to regulate the ignition timing, reducing the valve opening, reduce the throttle, downshift or brake wheels, so that the wheel will not spin. TCS can improve vehicle driving stability, increase acceleration, improve climbing ability. Collected only on the original limousine was installed TCS, now there are also many ordinary cars. TCS and ABS if used in conjunction with each other, will further enhance the car's safety performance. TCS and ABS can be shared on the axle of the wheel speed sensor, and connected with the trip computer, constantly monitors the wheel speed, when found in low-speed spin when, TCS will immediately notify the ABS action to reduce the wheel spin. If high-speed spin when found, TCS immediately issued a directive to the trip computer, directing the engine slow down and transmission downshift, slip the slipping wheel is no longer prevent the loss of control drift.
Electronic stability control (ESP)
Electronic stability control (ElectronicStablityProgram, referred to as ESP) is the first application of Mercedes-Benz A-class in its car. ESP is actually a traction control system, compared with other traction control systems, ESP not only control the driving wheel, and can control the driven wheel. Such as rear-wheel drive vehicles often appear too much of the steering, rear wheel out of control and drift at this time, ESP will slowly brake the outside front wheel to stabilize the car; in turn had came from, in order to correct tracking direction, ESP will within the rear brake slow to correct the direction of travel.
Intelligent air conditioning
Intelligent air conditioning system according to the external climatic conditions, in accordance with pre-installed in the car's indicators of temperature, humidity, air cleanliness sensor signals coming from the analysis, determine, and automatically open the refrigeration, heating, dehumidification and air cleaning and other functions. In the advanced security vehicles, the air conditioning system with other systems (such as driver dozing off alarm system) combined, inattentive drivers, when found, there are signs of dozing when the air conditioning automatically emit the aroma of sober .
Smart Key
Mercedes-Benz CLK coupe has adopted a smart key, this key can launch a smart infrared signals can open one or two doors, trunk and fuel filler hole cover, you can also manipulate the car's windows and skylights, more advanced intelligent key is like a credit card, when the driver touched the door handle, the central locking control system began to work and launch a wireless query signals, intelligent key card to make the correct response, the lock to open automatically. Only when the central perception of key card processor in the vehicle, the engine will start.
Dimming rearview mirror
Dimming inside rearview mirror is usually installed in it by the side of a special mirror and two photodiodes and electronic controller, electronic controller to receive the first shot sent the photodiode light optical signal after the shot. If the light lights and the rear view mirror in the car, such as the back light is greater than the front light, the electronic controller will output a voltage to the conductive layer. This conductive layer on the electrochemical voltage change in the mirror layer color, the higher the voltage, the darker the electrical layer, this time even if the irradiation of strong light to the rear view mirror, by dimming interior mirror reflection to the driver's eyes shows the dark on light, not bright. Specular reflection i11 electric layer to incident intensity of light under the rear, automatic, continuous change in order to prevent glare. When the vehicle is reversing, dimming inside rearview mirror glare function is removed, the right exterior mirrors auto-exposure on the ground.
Brake lights
Normal brake lights (brake lights) are installed in the rear on both sides, when drivers brake pedal, the brake lights that light up, and glows red to alert the vehicle behind the note, not rear-end collision. When the drivers release the brake pedal when the brake light is off. Brake lights, also known as the third brake light, it is generally installed in the rear of the upper to the rear of the vehicle in front of the vehicle can be detected early and the implementation of the brake, to prevent rear-end accidents. As the car has been around two brake lights, so it is customary to also put installed in the rear upper brake light as third brake light.
Rain sensor
Rain sensor hidden behind the front windshield, it falls on the glass according to the amount of water to adjust the size of wiper movement, thus greatly reducing the car's troubles.
Rain sensor is not limited to a few wiper gear to transform the movement speed, but the action of the wiper speed to do stepless adjustment. It has been known as a light-emitting diode LED is responsible for sending far-infrared, when the glass surface is dry, almost 100% of light is reflected back, this photodiode will be able to receive a lot of reflected light. The more rain on the glass, the less light is reflected back, the result is faster wiper action.

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