2-2-2-sistema-dopolnitelnojj-bezopasnosti-srs.html

2.2.2. System of additional safety (SRS)

The scheme of an arrangement of the elements SRS in car salon

Scheme of an arrangement of precautionary labels of SRS

Forward face-to-face and lateral safety cushions and also emergency natyazhitel of seat belts belong to the elements SRS. Safety cushions provide additional protection of the driver and the forward passenger at strong directed front (face-to-face pillows) or onboard (lateral pillows) the overloads arising at emergency collisions of the car.

Emergency natyazhitel provide instant sample of a weak point of seat belts of forward seats at the directed face-to-face overloads.

The scheme of an arrangement of the elements SRS — see an illustration the Scheme of an arrangement of the elements SRS in car salon.

Modules of all elements SRS (safety cushions and emergency natyazhitel) are not subject to a reuse and after operation should be replaced without fail.

At inclusion of ignition there is a short-term operation of a control lamp of SRS (AIR BAG) on an instrument guard of the car. During lamp activation the module of self-diagnostics polls a condition of components of system. If any violations during diagnostic poll does not come to light, the control lamp should go out about 7 seconds later.

Precautionary measures

On all equipped with safety cushions cars are established the special labels warning the driver and passengers about need of observance of the appropriate measures of precaution (see an illustration the Scheme of an arrangement of precautionary labels of SRS).

• Forward safety cushions are not intended for operation at lateral and back blows, and also when capsizing car. Besides, the design of system provides activation of safety cushions only in case of excess by the directed face-to-face overloads of some control unit of threshold value put in memory. Told once again proves the statement that existence in the car of safety cushions does not give the grounds scornfully to treat the requirement of obligatory use of seat belts.
• The maximum level of the protection provided by face-to-face pillows and seat belts is reached at the vertical provision of the sitting. It is necessary to remember also that filling of safety cushions occurs during very short time and at leaky pressing of a seat sitting to a back there is a big risk of receiving by it traumas at the expense of rejection by instantly filled pillow to a back — try during movement as it is possible to nestle more densely to a back on a back of a seat and to occupy the most remote from the helmsman of the wheel / dashboard situation. Do not forget to be fastened by a seat belt.
• Try to hold when driving a steering wheel for its external rim and not to get elbows in stupichny sector in which the module of a driver's safety cushion is fixed.
• Do not transport children of younger age on a lap and without fail fasten them seat belts. In case of need use children's seats of a special design (see. Elements of passive safety).
• Lateral safety cushions are not intended for operation at face-to-face and back blows, and also at insufficient intensity of the overloads arising at lateral blows or capsizing of a vehicle.
• Remember that operation of lateral safety cushions occurs almost instantly — try not to put out during movement of a hand in a window, and also not to incline the head sideways and strongly not to take aside an external knee. Do not forget to be fastened by a seat belt.
• Back passengers of the cars equipped with lateral safety cushions should not bend too strongly during movement forward, placing the head or hands in a scope of pillows. Special attentiveness is demanded by transportation in the car of children of younger age — watch, that during movement children were in at a stegnuty condition, try to stop during time any pranks.
• Do not put on covers the forward seats equipped with lateral safety cushions.
• At sale of the car it is necessary to inform most fully the buyer on places of placement of the elements SRS and to acquaint it with materials of this section of the Management.

Face-to-face safety cushions

Modules of face-to-face safety cushions are built in in a stupichny part of a steering wheel (a driver's pillow) and the right top section of the dashboard, over a ware box (a passenger pillow) (see an illustration the Scheme of an arrangement of the elements SRS in car salon). Activation of gas generators of face-to-face safety cushions occurs at excess by as appropriate directed overloads of some threshold value. It is necessary to mean that activation of pillows can occur not only at a head-on collision of the car, no less than not at each front blow. The damage rate of a vehicle is not criterion of need of operation or failure of pillows.

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 includes gas generators of safety cushions, causing their instant filling.

During collision the seat belt holds from shift the lower part of a trunk sitting. Face-to-face 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.

As signals on operation of both safety cushions arrive from the same sensors, both pillows work at the same time. However, the probability of initiation only is not excluded by one of pillows. Such becomes possible when the size of the directed overloads which have arisen at collision was on the verge of a range of operation of gas generators. In this case seat belts provide rather reliable protection of the driver and the forward passenger while the effect from operation of a safety cushion 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 occupies with sensors of overloads fractions of a second. Operation of pillows occurs so quickly that the human ear simply is not capable to apprehend cotton of gas generators when filling pillows.

After a road accident at which there was an operation of safety cushions, the volume of salon of the car looks slightly filled with smoke. Actually it is a suspension of a tonkodispersny powder by which covers of pillows in the combined condition 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.

Precautionary measures

• Do not place any subjects on an overlay of a steering wheel or on the right on the dashboard. Also do not transport hand luggage and subjects of personal use on a lap, placing them in space among themselves and the safety cushion module!
• Right after safety cushion operation some of its components remain hot during even some time — be careful, try not to touch a surface of the module of a pillow!
• At all do not make any unauthorized experts of updating in system of electric equipment of the equipped SRS car! Isolation of electroconducting of SRS is painted in bright yellow color and should not be disconnected for lack of the skilled expert. For check of serviceability of functioning of the elements SRS it is allowed to use only the special diagnostic equipment!
• Do not establish independently on the dashboard and a steering column any additional elements of decorative furnish!

Lateral safety cushions

Activation of lateral safety cushions occurs at excess by as appropriate directed overloads of some threshold value. It is necessary to mean that activation of pillows can occur not only at lateral blows, no less than not at each similar blow. The damage rate of a vehicle is not criterion of need of operation or failure of pillows.

Operation of safety cushions is accompanied by quite loud cotton and the small smoke emission which is not containing toxic components and not being a sign of ignition. Nevertheless, inhalation of a smoke allocated by a gas generator can lead to insignificant irritation of mucous membranes and cause a short fit of coughing.

Right after operation gas from pillows is automatically pitted.

Concerning lateral safety cushions all preventions provided above for face-to-face pillows adjusted for location of components operate.

Automatic emergency natyazhitel of seat belts of forward seats

The scheme of an arrangement of modules of emergency natyazhitel — see an illustration the Scheme of an arrangement of the elements SRS in car salon.

On some models for the purpose of ensuring additional protection of the driver / passenger forward seat belts are supplied with devices which at operation provide an automatic choice of a weak point of belts that helps to exclude possibility of dangerous movings of the driver and the passenger in case of a road accident.

Activation of pyrotechnic modules of emergency natyazhitel occurs at the directed overloads arising during a strong head-on collision and is accompanied by sharp cotton and an insignificant dymoobrazovaniye. Emission of forward safety cushions is at the same time made.

At device operation the seat belt remains in the tense situation until the bracket of its buckle will not be taken out from the lock of the last.

Inclusion on an instrument guard of a control lamp of seat belts warns the driver about possible malfunctions in devices of automatic emergency natyazhitel of belts — the car should be driven away on car repair shop for carrying out complete check of SRS and performance of the corresponding regenerative repair.

Concerning emergency natyazhitel all preventions provided above for face-to-face pillows adjusted for location of components operate.

Control lamp of SRS

Service and replacement

As it was already mentioned above, modules of all elements SRS (and emergency natyazhitel) are among safety cushions of the disposable equipment, to regenerative repair are not subject and after operation should be replaced without fail — as a reminder on need of replacement of modules of safety cushions on an instrument guard it is necessary to burn a control lamp of AIR BAG. Replacement of SRS modules should be made in the conditions of car repair shop. About ways of utilization the failed SRS components it is possible to consult with specialists of car-care center.

Safety cushions and devices of an automatic emergency tension of seat belts, practically do not need regular checks and maintenance. However the owner of the vehicle equipped as appropriate should remember the following:

• After operation of safety cushions they are subject to obligatory replacement together with the system control unit. Do not try to dismantle fulfilled pillows independently. These operations should be carried out only in the conditions of a car-care center workshop;
• If operation of a control lamp of SRS indicates refusal existence in system, it is necessary to address immediately on the next car repair shop Infiniti where complete diagnostics and necessary regenerative repair of system will be made. Otherwise safety cushions can not work at a road accident and not execute the protective function;
• Specially trained personnel is allowed to works with knots of additional system of safety only. It is forbidden to dismantle independently from the car of a safety cushion and emergency natyazhitel of seat belts. In default SRS or after emergency operation of safety cushions and natyazhitel of seat belts is necessary to address on car repair shop for carrying out repair or replacement of knots of system;
• Do not open modules and do not change electroconducting of systems of safety cushions and devices of an automatic emergency tension of seat belts — such intervention can lead to involuntary operation of pillows and natyazhitel and be at the bottom of a travmirovaniye of the performer or the people who were nearby;
• Do not make replacement of forward seats without receiving preliminary consultation at Infiniti car repair shop. Inaccurate or incorrect performance of replacement or removal of covers can lead to refusal of operation of lateral safety cushions in case of a road accident;
• In 10 years from the moment of vehicle release (see a certified label on the central rack from the driver's party of the car — see. Introduction) it is necessary to make preventive check of a condition of the SRS components.