4-1-8-obsluzhivanie-shin.html
4.1.8. Service of tyresPressure of air in the tyre
The weight of the car flattens the tyre on the area of its contact to road. Kachenie tyres conducts to compulsory deformation of a protector and all брекера. At insufficient pressure the compelled deformation increases, owing to what the temperature and resistance качению raises. These factors conduct to the raised deterioration and negatively influence traffic safety.
Too air high pressure in the tyre leads to the raised deterioration of an average part of a protector and worsens comfortableness. It is recommended to support always pressure of air in the tyres, specified by the manufacturer.
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THE NOTE
The resulted schedules do not extend on all scale of production.
They are necessary to show wearability of tyres on forward and back axes, and also wearability of tyres on cars with a forward and full drive.
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Depending on service conditions and a running gear achievable service life of tyres can strongly deviate from resulted more low.
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Fig. 4.3. Schedule 1 of wearability of tyres
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Height of drawing of a protector throughout service life for cars with a forward drive and tyres with an index of speed V.
P – Height of drawing of a protector.
S – Run.
1 – the Forward axis.
2 – the Back axis.
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Fig. 4.4. Schedule 2 of wearability of tyres
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Height of drawing of a protector throughout service life for cars with a full drive and tyres with an index of speed V.
P – Height of drawing of a protector.
S – Run.
1 – the Forward axis.
2 – the Back axis.
Apparently from schedules 1 and 2, the tyre with full drawing of a protector during certain run wears out more than considerably worn more out tyre. After the first 5000 km it is impossible to judge the general service life of the tyre as the deterioration characteristic passes нелинейно.
On front-wheel cars forward wheels, except efforts at turns and dispersal, are compelled to maintain the most part of lateral and brake efforts. Because of such loadings of the tyre on forward wheels of front-wheel cars wear out much faster, than on back wheels. Uniform deterioration of all tyres is reached at the expense of regular shift of forward and back wheels.
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