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>> System of additional safety (SRS)
System of additional safety (SRS)
Into number of devices and the components forming system of additional safety (SRS) enter:
Two lobbies (face-to-face) and bottom (knee) driver's safety cushions. The module of the main face-to-face driver's safety cushion is placed in a nave of a steering wheel, the bottom pillow is built in in the dashboard at level of knees of the driver. The safety cushion of the forward passenger is built in in the right part of the dashboard of the car. The locations of pillows are marked with precautionary inscriptions of "SRS AIRBAG";
The sensors of the directed overloads working at strong front blow;
Electronic system of self-diagnostics which at the included ignition provides continuous testing of sensors of overloads, the control unit, gas generators of pillows and connecting electroconducting of the corresponding chains;
The automatic emergency natyazhitel who have been built in in returnable devices of seat belts of forward seats;
Control lamp of refusals SRS which has been built in in a combination of devices;
The independent power supply intended for duplication of function of the onboard storage battery in case of its exit out of operation during collision.
In a combination of devices of the car the special control lamp intended for the prevention of the driver about revealed by system of self-diagnostics refusals of SRS is built in. Operation of a control lamp testifies to possible malfunctions of modules of safety cushions, or automatic emergency natyazhitel of seat belts.
Principles of functioning of safety cushions
At weak face-to-face collisions, lateral collisions, and also when capsizing car regular safety cushions should not work.
Sensors of the directed overloads react to excess of some limiting value which can arise at a strong head-on collision. On a signal of sensors the control unit activates gas generators of safety cushions, causing their instant filling.
During collision the seat belt holds from shift the lower part of a trunk sitting. Forward safety cushions help to prevent a travmirovaniye of the driver and the forward passenger as a result of blow their head and a thorax about steering the wheel/dashboard. The bottom safety cushion is intended for prevention of injury of knee joints of the driver.
Principle of action of a driver's safety cushion
As information signals arrive on the SRS control unit from the same sensors, operation of all safety cushions occurs at the same time. Nevertheless, the probability of initiation only one of modules is not excluded, - such becomes possible when the size of the directed overloads which have arisen at collision was on the verge of a range of sensitivity of sensors. In this case seat belts provide rather reliable protection of the driver and the forward passenger while the effect from operation of pillows will be minimum.
Right after operation and performance by pillows of the functions gas from them is issued that allows the driver to keep the review and freely to manipulate all governing bodies the car.
Full duration of process from the moment of giving of a signal before production of gas from pillows borrows with sensors of overloads no more the tenth fraction of a second. Operation of modules occurs so quickly that the human ear simply is not capable to apprehend cotton of gas generators when filling pillows.
After operation of safety cushions the volume of salon of the car looks slightly filled with smoke because of dispersion of a suspension of a tonkodispersny powder by which covers of the combined pillows are usually poured. People with a disease of respiratory organs can feel a certain discomfort from the gaseous products containing in air allocated by gas generators of pillows.
Order of functioning of a control lamp of refusals of SRS
The control lamp of SRS is built in in a combination of devices of the car (see. Part car Equipment, arrangement of devices and governing bodies).
At ignition inclusion (the ignition key will turn in the situation ON) there is the short-term operation of a control lamp confirming serviceability of its functioning.
At refusal of a lamp of switching off after implementation of start of the engine, or at its operation during movement the car should be driven away at the first possibility on HUNDRED KIA, - serviceability of operation of the SRS components at failure be in this situation guaranteed cannot.
Automatic emergency natyazhitel of seat belts
Emergency automatic natyazhitel equipped returnable devices of three-anchor seat belts of forward seats. By Natyazhiteli are put in action on a signal of sensors of the directed overloads of SRS during a head-on collision and provide instant sample of a weak point of belts therefore straps of the last densely cover a body sitting, considerably raising extent of protection of the driver and the forward passenger.
Natyazhitel is built in in assembly of the returnable mechanism of a belt. The order of using such belts is similar to an order of using belts of the usual design equipped with inertial returnable devices. The mechanism of operation of a natyazhitel is absolutely opaque to the user and does not demand from the last any additional skills and knowledge.
Activation of natyazhitel occurs only at considerable face-to-face overloads. Operation of modules is accompanied by loud cotton and an insignificant dymoobrazovaniye.
Being allocated at operation of natyazhitel the smoke is safe for health of the person, however at direct inhalation can cause irritation of mucous membranes.
As well as in case of safety cushions, modules of emergency natyazhitel are calculated on single operation and after that are subject to replacement assembled with belts, - address on the firm HUNDRED companies KIA. The inscription of "REPLACE BELT" put on a label testifies to operation of emergency natyazhitel of seat belts, putting forward of directing a belt, - the vyprastyvaniye of the same label testifies to excessive stretching at blow of belts of a usual design.