Regard braking system as all, the car that action allows travel is medium namely of course undertakes by our apiration decelerate jockeys even. Working principle passes the kinetic energy of the car attrition to be changed into heat energy namely. Car brake system basically is mixed by energy supplying device, control equipment, gearing the partial composition such as brake, common brake basically has brake bosomy type and disk brake.
Rouse type brake
Brake bosomy type basically includes beat of hoof of wheel cylinder of apply the brake, apply the brake, apply the brake, attrition piece, the part such as return spring. Advocate if adopt hydraulic pressure device it is attrition piece with year old the apply the brake with rotational wheel rouses inside face to produce clash, have the effect of apply the brake thereby.
When stepping on next brake pedal, the piston that drives brake total pump moves, generate pressure in oil path then, brake fluid transfers pressure the apply the brake of the wheel to divide pump to drive a piston, the piston drives hoof of apply the brake to move outwards, make then attrition piece produce clash with brake beat, produce power of apply the brake thereby.
Can see from inside the structure, brake bosomy type is the environment that the job is in to close relatively, the quantity of heat of the generation in process of apply the brake comes loose not easily piece, frequent apply the brake affects result of apply the brake. Nevertheless bosomy type brake can provide power of very high apply the brake, apply extensively on heavy-duty car.
Disk brake
Disk brake also calls dish type brake, main by apply the brake dish, clamp of apply the brake, attrition piece, the part such as cent pump, vitta is formed. Disk brake brings to bear on pressure to clamp of apply the brake through hydraulic pressure system, make apply the brake chafes piece with the apply the brake that turns along with the wheel dish produce clash, achieve the goal of apply the brake thereby.
What differ with enclosed brake bosomy type is, disk brake opens wide type. The quantity of heat of the generation in process of apply the brake can drop off very quickly, have efficiency of very good apply the brake, apply extensively already now on the car.
Ventilated apply the brake dish
Process of apply the brake is attrition actually the process of heat energy of translate into of force general kinetic energy, if the quantity of heat of brake cannot come loose in time,go out, will affect result of its apply the brake. To promote apply the brake efficiency further, ventilated apply the brake dish emerge as the times require. Interior of undercarriage of ventilated Buddhist templeput on the brakes is hollow or in apply the brake dish hit a lot of alveolus, cold air is OK from which cross undertake dropping in temperature.
Look from appearance, it is in circumferential on have a lot of hole air that lead to the centre of a circle, the centrifugal power that it uses a car to arise between travel can make air convection, achieve medicinal powder hot purpose, because this comes loose than common sincere disk type,hot effect is close friends a lot of.
Apply the brake of pottery and porcelain dish
Apply the brake of pottery and porcelain dish have weight at undercarriage of general Buddhist templeput on the brakes relatively light, high temperature resistant the character such as wear-resisting. Undercarriage of common Buddhist templeput on the brakes issues easy high fever in main apply the brake and generation heat ebbs, function of apply the brake can sell at a discount greatly, and undercarriage of Buddhist templeput on the brakes of pottery and porcelain has very good heatproof decline property,
Apply the brake of pottery and porcelain dish in apply the brake first phase can produce power of the greatest apply the brake, integral apply the brake should compare traditional brake system faster, distance of apply the brake is shorter. Of course, its price also is very costly, multi-purpose go up at high-powered racing bike.
Urgent brake support system (EBA)
Urgent brake support system, its action is to become when ECU of computer of drive a vehicle discovers the driver has urgent apply the brake, power of apply the brake can be increased automatically in the instant, force is not worth and produce danger feeling in order to because manage the mechanism is moved,prevent.
When the time that steps on apply the brake when the loose accelerator that sensor accepts, rate that steps on apply the brake and strength accord with a requirement, ECU can start measure of urgent apply the brake immediately, in short produce power of apply the brake entirely in a few millisecond, the time that this steps on footplate of apply the brake after all than the driver should be gotten quickly much, can shorten so the brake distance below circumstance of urgent apply the brake.
ABS
ABS(Anti-locked Braking System) is prevented namely adopt dead brake system. It is one kind is had prevent the slippery, automobile safety that defends a lock to wait for an advantage to death to control a system, apply extensively already go up at the car. ABS basically controls regulating unit of pressure of sensor of rotate speed of unit, wheel, apply the brake and apply the brake to control the part such as circuit to comprise by ECU.
In process of apply the brake, ABS controls unit to get the speed signal of the wheel from wheel speed sensor ceaselessly, try to handle, judge a wheel to whether be about to hold in the arms dead then. ABS brake apply the brake its characteristic is tend when the wheel when holding critical point in the arms dead, force of pump pressure of cent of apply the brake does not follow apply the brake advocate pump pressure force adds and heighten, pressure is holding critical point in the arms dead around change.
If judge a wheel to was not held in the arms dead, regulating unit of pressure of apply the brake does not have a job, force of apply the brake will continue to if judgement gives a certain wheel to be about to hold in the arms dead,increase; , ECU issues a statement to regulating unit of pressure of apply the brake, shut the passageway of crock of apply the brake and wheel cylinder of apply the brake, make if judgement gives a wheel to appear,the pressure of annulus of apply the brake increases; no longer hold in the arms dead pull slippery condition, issue a statement to regulating unit of pressure of apply the brake namely, make the oil pressure of wheel cylinder of apply the brake is reduced, reduce force of apply the brake.
What is ESP
Automobile body electron stabilizes a system (Electronic Stability Program, abbreviation ESP) , it is rich world (the patent of Bosch) company. Other company also has research and development to give similar system, if the VSC of the DSC of BMW, Feng Tian is waited a moment.
ESP system is ABS(is prevented actually adopt dead system) prevent with ASR(drive wheel slippery turn system) on the function outspread, can say the highest form that is current car antiskid. Basically reach by control assembly turn to sensor (of the steering wheel that monitor turn to angle) , wheel sensor (the speed that monitors each wheels is rotational) , sideslip sensor (the condition that even if axes turns,the bodywork that monitor confuses) , transverse acceleration sensor (when the car that monitor turns centrifugal. The signal that controls unit to carry these sensor undertakes judging to the moving condition of car, issue control statement then.
How does ESP work
When fast travel perhaps turns to the car, the transverse active force of generation can make a car not stable, send make trouble reason easily, and ESP system can plant this circumstance nip in the bud. So is this system how accomplish?
When fraise appears suddenly before car, driver must fast towards the left turns, turn to sensor to transmit this signal ESP to control assembly right now, sideslip sensor and transverse acceleration sensor give out a car to turn to insufficient signal, this means a car to will bear down on directly fraise. So at this moment ESP system will instantaneous general rear wheel is urgent apply the brake, can produce the counterforce that turns to need so, make car according to change an intent to travel.
When if be on the left driveway of the travel after the car changes direction,changing direction reversely, the car can have change exceeding to danger, rightward torque is too big, so that car end swings side of towards the left. At this moment ESP system is met apply the brake of will left front wheel, torque can be reduced, make a car successful change direction.
