3 research outputs found
Energy potential of friction brake
ΠΠΎΡΠ΅ΡΠ΅ ΠΏΡΠ΅Π΄ΡΡΠ°Π²ΡΠ° ΠΊΠΎΠΌΠΏΠ»Π΅ΠΊΡΠ°Π½ ΡΡΠΎΡ
Π°ΡΠΈΡΡΠΊΠΈ ΠΈ ΡΡΠΈΠ±ΠΎΠ»ΠΎΡΠΊΠΈ ΠΏΡΠΎΡΠ΅Ρ ΠΊΠΎΡΠΈ ΠΊΠ°ΡΠ°ΠΊΡΠ΅ΡΠΈΡΡ
Π·Π½Π°ΡΠ°ΡΠ½Π΅ ΠΏΡΠΎΠΌΠ΅Π½Π΅ ΡΠ»Π°Π·Π½Π΅ Π΅Π½Π΅ΡΠ³ΠΈΡΠ΅ ΠΊΠΎΡΠ° Π΅Π½Π΅ΡΠ³ΠΈΡΡ ΠΊΡΠ΅ΡΠ°ΡΠ° Π²ΠΎΠ·ΠΈΠ»Π° Π½Π΅ΠΏΠΎΠ²ΡΠ°ΡΠ½ΠΎ ΠΏΡΠ΅ΡΠ²Π°ΡΠ°
Ρ ΡΠΎΠΏΠ»ΠΎΡΠ½Ρ Π΅Π½Π΅ΡΠ³ΠΈΡΡ ΠΏΡΠΈ ΡΠ΅ΠΌΡ ΡΠ΅ ΡΠ° Π΅Π½Π΅ΡΠΈΡΠ° ΠΏΡΠ΅Π΄Π°ΡΠ΅ ΠΎΠΊΠΎΠ»ΠΈΠ½ΠΈ. Π£ Π΄ΡΡΠΌΡΠΊΠΈΠΌ Π²ΠΎΠ·ΠΈΠ»ΠΈΠΌΠ°
ΠΎΠΏΡΠ΅ΠΌΡΠ΅Π½ΠΈΠΌ ΠΊΠΎΠ½Π²Π΅Π½ΡΠΈΠΎΠ½Π°Π»Π½ΠΈΠΌ ΠΊΠΎΡΠ½ΠΈΡΠ°ΠΌΠ°, ΠΊΠΎΡΠ΅ΡΠ΅ ΠΏΡΠ΅Π΄ΡΡΠ°Π²ΡΠ° Π΅ΠΊΡΡΡΠ΅ΠΌΠ½ΠΎ Π½Π΅ΠΏΠΎΠ²ΠΎΡΠ°Π½
ΠΏΡΠΎΡΠ΅Ρ ΡΠ° ΡΡΠ°Π½ΠΎΠ²ΠΈΡΡΠ° ΡΡΠ°Π½ΡΡΠΎΡΠΌΠ°ΡΠΈΡΠ΅ ΠΈ ΡΠ΅ΠΊΡΠΏΠ΅ΡΠ°ΡΠΈΡΠ΅ Π΅Π½Π΅ΡΠ³ΠΈΡΠ΅ Ρ ΠΊΠΎΡΠ΅ΠΌ ΡΠ΅ Π΅Π½Π΅ΡΠ³ΠΈΡΠ°
Π½Π΅ΠΏΠΎΠ²ΡΠ°ΡΠ½ΠΎ Π³ΡΠ±ΠΈ. ΠΠ· ΠΎΠ²ΠΎΠ³ ΡΠ°Π·Π»ΠΎΠ³Π° ΡΠ΅ ΠΏΠΎΡΡΠ°Π²ΡΠ° ΠΏΠΈΡΠ°ΡΠ΅ Π΄Π° Π»ΠΈ ΠΏΠΎΡΡΠΎΡΠΈ ΠΌΠΎΠ³ΡΡΠ½ΠΎΡΡ
ΡΠΏΡΠ°Π²ΡΠ°ΡΠ° ΠΊΠΎΠ»ΠΈΡΠΈΠ½ΠΎΠΌ Π΅Π½Π΅ΡΠ³ΠΈΡΠ΅ ΠΊΠΎΡΠ° ΡΠ΅ ΡΡΡΠΎΡΠΈ Ρ ΡΡΠΈΠΊΡΠΈΠΎΠ½ΠΈΠΌ ΠΊΠΎΡΠ½ΠΈΡΠ°ΠΌΠ°, ΠΎΠ΄Π½ΠΎΡΠ½ΠΎ Π΄Π°
Π»ΠΈ ΠΏΠΎΡΡΠΎΡΠΈ ΠΌΠΎΠ³ΡΡΠ½ΠΎΡΡ ΡΠΏΡΠ°Π²ΡΠ°ΡΠ° ΡΠ°Π΄ΠΎΠΌ ΠΊΠΎΡΠ΅ΡΠ° ΠΈ Ρ
Π°Π±Π°ΡΠ΅ΠΌ Ρ ΠΏΡΠΎΡΠ΅ΡΡ ΠΊΠΎΡΠ΅ΡΠ° Ρ ΡΠΈΡΡ
ΠΌΠ°ΠΊΡΠΈΠΌΠ°Π»Π½ΠΎΠ³ ΠΎΡΡΠ²Π°ΡΠ΅ΡΠ° Π΅ΡΠΈΠΊΠ°ΡΠ½ΠΎΡΡΠΈ ΠΏΡΠΎΡΠ΅ΡΠ° ΠΊΠΎΡΠ΅ΡΠ° ΠΈ ΠΆΠΈΠ²ΠΎΡΠ½ΠΎΠ³ Π²Π΅ΠΊΠ° ΠΊΠΎΡΠ½ΠΎΠ³
ΡΠΈΡΡΠ΅ΠΌΠ°, ΠΊΠ°ΠΎ ΠΈ ΠΊΠΎΡΠΈ ΡΠ΅ ΠΈΠ·Π½ΠΎΡ Π΅Π½Π΅ΡΠ³ΠΈΡΠ΅ ΠΊΠΎΡΠΈ ΠΊΠΎΡΠ½ΠΈΡΠ° ΠΌΠΎΠΆΠ΅ Π΄Π° ΡΡΠ°Π½ΡΡΠΎΡΠΌΠΈΡΠ΅ ΠΎΠ΄Π½ΠΎΡΠ½ΠΎ
ΠΏΡΠΈΠΌΠΈ ΡΠΎΠΊΠΎΠΌ ΠΆΠΈΠ²ΠΎΡΠ½ΠΎΠ³ Π²Π΅ΠΊΠ°? ΠΡΡΠ³ΠΈΠΌ ΡΠ΅ΡΠΈΠΌΠ°, ΠΏΠΈΡΠ°ΡΠ΅ ΡΠ΅ ΠΊΠΎΠ»ΠΈΠΊΠΈ ΡΠ΅ Π΅Π½Π΅ΡΠ³Π΅ΡΡΠΊΠΈ
ΠΏΠΎΡΠ΅Π½ΡΠΈΡΠ°Π» Π΄Π°ΡΠ΅ ΠΊΠΎΡΠ½ΠΈΡΠ΅ ΠΈ ΠΊΠ°ΠΊΠΎ ΡΠ΅ ΠΈΡΡΠΈ ΠΌΠΎΠΆΠ΅ ΠΈΡΠΊΠΎΡΠΈΡΡΠΈΡΠΈ ΡΠ· ΡΡΠ»ΠΎΠ² Π΄Π° ΡΠ΅ Π½Π΅ Π½Π°ΡΡΡΠ΅
Π΄Π΅ΠΊΠ»Π°ΡΠΈΡΠ°Π½Π΅ ΠΊΠΎΡΠ½Π΅ ΠΏΠ΅ΡΡΠΎΡΠΌΠ°Π½ΡΠ΅?
ΠΠ΅ΠΊΠ»Π°ΡΠΈΡΠ°Π½Π΅ ΠΊΠΎΡΠ½Π΅ ΠΏΠ΅ΡΠΎΡΠΌΡΠ°Π½ΡΠ΅ ΡΠ΅, ΠΎΠ±ΠΈΡΠ½ΠΎ, ΠΎΡΠ΅ΡΡΡΡ Π½Π° Π±Π°Π·ΠΈ Π·Π°ΡΡΡΠ°Π²Π½ΠΎΠ³ ΠΏΡΡΠ°,
ΠΎΡΡΠ²Π°ΡΠ΅Π½ΠΎΠ³ ΡΡΠΏΠΎΡΠ΅ΡΠ°, ΠΊΠΎΡΠ½ΠΎΠ³ ΠΌΠΎΠΌΠ΅Π½ΡΠ° ΠΈ ΡΠ». Π£ ΠΎΠ²ΠΎΠΌ ΡΠ»ΡΡΠ°ΡΡ ΡΠ΅ Π½Π΅ ΡΠ°Π·ΠΌΠ°ΡΡΠ° ΠΎΡΡΠ²Π°ΡΠ΅Π½Π°
ΡΠ½Π°Π³Π° ΠΊΠΎΡΠ΅ΡΠ°, ΠΎΠ΄Π½ΠΎΡΠ½ΠΎ ΡΠ°Π΄ ΠΊΠΎΡΠ΅ΡΠ°. ΠΠ΅ΡΡΡΠΈΠΌ, ΠΊΠΎΡΠ½Π΅ ΠΏΠ΅ΡΡΠΎΡΠΌΠ°Π½ΡΠ΅, ΠΏΡΠ΅ ΡΠ²Π΅Π³Π° Π·Π°Π²ΠΈΡΠ΅ ΠΎΠ΄
ΡΠΎΠ³Π° βΠΊΠ°ΠΊΠ²Π΅ ΡΡ ΠΌΠΎΠ³ΡΡΠ½ΠΎΡΡΠΈ ΠΊΠΎΡΠ½ΠΈΡΠ΅β, ΠΎΠ΄Π½ΠΎΡΠ½ΠΎ ΠΊΠ°ΠΊΠ°Π² ΡΠ΅ ΠΊΠ°ΠΏΠ°ΡΠΈΡΠ΅Ρ, ΠΎΠ΄Π½ΠΎΡΠ½ΠΎ, Π³Π΅Π½Π΅ΡΠΈΡΠΊΠΈ
ΠΈΠ»ΠΈ ΠΈΠ½ΡΠΈΡΠ°Π»Π½ΠΈ ΠΏΠΎΡΠ΅Π½ΡΠΈΡΠ°Π» Π΄Π°ΡΠ΅ ΠΊΠΎΡΠ½ΠΈΡΠ΅ ΠΈ Π½Π° ΠΊΠΎΡΠΈ Π½Π°ΡΠΈΠ½ ΡΠ΅ ΡΠ° Π΅Π½Π΅ΡΠ³ΠΈΡΠ° ΠΌΠΎΠΆΠ΅
ΠΈΡΠΊΠΎΡΠΈΡΡΠΈΡΠΈ Ρ Π΄Π°ΡΠΈΠΌ ΡΠ°Π΄Π½ΠΈΠΌ ΡΡΠ»ΠΎΠ²ΠΈΠΌΠ° Ρ ΡΠΎΠΊΡ ΠΆΠΈΠ²ΠΎΡΠ½ΠΎΠ³ Π²Π΅ΠΊΠ° ΠΊΠΎΡΠ½ΠΈΡΠ΅.
Π’Π°ΠΊΠΎΡΠ΅, ΠΏΠΎΠ·Π½Π°Π²Π°ΡΠ΅ Π²ΡΠ΅Π΄Π½ΠΎΡΡΠΈ Π΅Π½Π΅ΡΠ³Π΅ΡΡΠΊΠΎΠ³ ΠΏΠΎΡΠ΅Π½ΡΠΈΡΠ°Π»Π° Π΄Π°ΡΠ΅ ΠΊΠΎΡΠ½ΠΈΡΠ΅, ΠΎΠΌΠΎΠ³ΡΡΠ°Π²Π°
ΡΠΏΡΠ°Π²ΡΠ°ΡΠ΅ ΠΏΡΠΎΡΠ΅ΡΠΎΠΌ ΠΊΠΎΡΠ΅ΡΠ° Ρ ΡΠΈΡΡ ΠΎΠΏΡΠΈΠΌΠΈΠ·Π°ΡΠΈΡΠ΅ ΠΌΠ΅ΡΡΠ·Π°Π²ΠΈΡΠ½ΠΎΡΡΠΈ ΠΈΠ·ΠΌΠ΅ΡΡ ΠΊΠΎΡΠ½ΠΈΡ
ΠΏΠ΅ΡΡΠΎΡΠΌΠ°Π½ΡΠΈ ΠΈ ΡΠ΅Π½ΠΎΠ³ ΠΆΠΈΠ²ΠΎΡΠ½ΠΎΠ³ Π²Π΅ΠΊΠ°, ΠΎΠ΄Π½ΠΎΡΠ½ΠΎ Ρ
Π°Π±Π°ΡΠ°. ΠΠ΅ΡΠΈΠ½Π° ΡΠ°Π²ΡΠ΅ΠΌΠ΅Π½Π½ΠΈΡ
Π²ΠΎΠ·ΠΈΠ»Π° ΡΠ΅ Π΄Π°Π½Π°Ρ ΠΎΠΏΡΠ΅ΠΌΡΠ΅Π½Π° ΡΠ°Π·Π»ΠΈΡΠΈΡΠΈΠΌ ΡΠ΅Π½Π·ΠΎΡΠΈΠΌΠ° (Π±ΡΠ·ΠΈΠ½Π΅, ΠΎΠ΄Π½ΠΎΡΠ½ΠΎ Π±ΡΠΎΡΠ° ΠΎΠ±ΡΡΠ°ΡΠ° ΡΠΎΡΠΈΡΠ°ΡΡΡΠ΅Π³
Π΅Π»Π΅ΠΌΠ΅Π½ΡΠ°, ΠΏΡΠΈΡΠΈΡΠΊΠ° Π°ΠΊΡΠΈΠ²ΠΈΡΠ°ΡΠ° ΠΊΠΎΡΠ½ΠΈΡΠ΅ ΠΈ ΡΠ΅ΠΌΠΏΠ΅ΡΠ°ΡΡΡΠ΅ ΡΡΠΈΠΊΡΠΈΠΎΠ½Π΅ ΠΏΠΎΡΠ²ΡΡΠΈΠ½Π΅) Π½Π°
ΠΎΡΠ½ΠΎΠ²Ρ ΠΊΠΎΡΠΈΡ
ΡΠ΅ ΠΎΠΌΠΎΠ³ΡΡΠ°Π²Π° ΠΌΠ΅ΡΠ΅ΡΠ΅ Π΅Π½Π΅ΡΠ³Π΅ΡΡΠΊΠΎΠ³ ΠΏΠΎΡΠ΅Π½ΡΠΈΡΠ°Π»Π° Ρ ΡΠ²Π°ΠΊΠΎΠΌ ΡΡΠ΅Π½ΡΡΠΊΡ
ΠΆΠΈΠ²ΠΎΡΠ½ΠΎΠ³ Π²Π΅ΠΊΠ° ΠΊΠΎΠ½ΠΈΡΠ΅. ΠΠ° ΠΎΠ²Π°Ρ Π½Π°ΡΠΈΠ½ ΡΠ΅ ΠΌΠΎΠΆΠ΅ ΡΠΏΡΠ°Π²ΡΠ°ΡΠΈ ΡΡΠΈΡΠ°ΡΠ½ΠΈΠΌ ΠΏΠ°ΡΠ°ΠΌΠ΅ΡΡΠΈΠΌΠ° Π½Π°
Π΅Π½Π΅ΡΠ³Π΅ΡΡΠΊΠΈ ΠΏΠΎΡΠ΅Π½ΡΠΈΡΠ°Π» ΠΊΠΎΡΠ½ΠΈΡΠ΅ ΠΏΡΠ΅ΠΌΠ° ΠΎΠ΄ΠΎΠ³ΠΎΠ²Π°ΡΠ°ΡΡΡΠ΅ΠΌ Π°Π»ΠΎΠ³ΡΠΈΡΠΌΡ ΠΊΠ°ΠΊΠΎ Π±ΠΈ ΡΠ΅
ΠΎΠΏΡΠΈΠΌΠΈΠ·ΠΎΠ²Π°Π»Π΅ ΠΊΠΎΡΠ½ΡΠ΅ ΠΏΠ΅ΡΡΠΎΡΠΌΠ°Π½ΡΠ΅ Ρ ΡΠΎΠΊΡ ΠΆΠΈΠ²ΠΎΡΠ½ΠΎΠ³ Π²Π΅ΠΊΠ° ΠΊΠΎΡΠ½ΠΈΡΠ΅.
ΠΠ½Π΅ΡΠ³Π΅ΡΡΠΊΠΈ ΠΏΠΎΡΠ΅Π½ΡΠΈΡΠ°Π» ΠΊΠΎΠ½ΠΈΡΠ΅ ΡΠ΅ Π΄Π΅ΡΠΈΠ½ΠΈΡΠ°Π½ ΠΆΠΈΠ²ΠΎΡΠ½ΠΈΠΌ Π²Π΅ΠΊΠΎΠΌ ΠΊΠΎΡΠ½ΠΈΡΠ΅, ΡΠ΅Π½ΠΈΠΌ
ΠΏΠ΅ΡΡΠΎΡΠΌΠ°Π½ΡΠ°ΠΌΠ° ΠΈ ΡΡΠ°Π±ΠΈΠ»Π½ΠΎΡΡΡ ΠΊΠΎΠ΅ΡΠΈΡΠΈΡΠ΅Π½ΡΠ° ΡΡΠ΅ΡΠ°. ΠΠ½Π΅ΡΠ³Π΅ΡΡΠΊΠΈ ΠΏΠΎΡΠ΅Π½ΡΠΈΡΠ°Π» ΠΊΠΎΡΠ½ΠΈΡΠ΅
Π³ΠΎΠ²ΠΎΡΠΈ ΠΊΠΎΠ»ΠΈΠΊΠΎ ΡΠ΅ Π΅Π½Π΅ΡΠ³ΠΈΡΠ΅ ΠΊΠΎΡΠ΅ΡΠ° ΠΌΠΎΠΆΠ΅ ΡΡΡΠΎΡΠΈΡΠΈ ΠΏΡΠ΅ ΡΠ΅Π½ΠΎΠ³ ΠΏΠΎΡΠΏΡΠ½ΠΎΠ³ (ΡΠΈΠ·ΠΈΡΠΊΠΎΠ³)
ΠΈΡΡΡΠΎΡΠ΅ΡΠ°. Π£ ΡΠΈΡΡ ΠΎΡΠ΅Π½Π΅ Π΅Π½Π΅ΡΠ³Π΅ΡΡΠΊΠΎΠ³ ΠΏΠΎΡΠ΅Π½ΡΠΈΡΠ°Π»Π° ΠΊΠΎΡΠ½ΠΈΡΠ΅, ΠΌΠΎΡΠ°ΡΡ ΡΠ΅
ΠΈΠ΄Π΅Π½ΡΠΈΡΠΈΠΊΠΎΠ²Π°ΡΠΈ, ΠΎΠ΄Π½oΡΠ½ΠΎ ΠΊΠ²Π°Π»ΠΈΡΠΈΠΊΠΎΠ²Π°ΡΠΈ ΠΈ ΠΊΠ²Π°Π½ΡΠΈΡΠΈΠΊΠΎΠ²Π°ΡΠΈ ΡΠ²ΠΈ ΡΡΠΈΡΠ°ΡΠ½ΠΈ ΠΏΠ°ΡΠ°ΠΌΠ΅ΡΡΠΈ.
Π£ ΡΠΎΠΌ ΡΠΈΡΡ, ΡΠΏΡΠΎΠ²Π΅Π΄Π΅Π½Π° ΡΡ Π±ΡΠΎΡΠ½Π° Π΅ΠΊΡΠΏΠ΅ΡΠΈΠΌΠ΅Π½ΡΠ°Π»Π½Π° ΠΈΡΠΏΠΈΡΠΈΠ²Π°ΡΠ° Π½Π° ΠΊΠΎΡΠ½ΠΈΡΠΈ
ΠΏΡΡΠ½ΠΈΡΠΊΠΎΠ³ ΠΌΠΎΡΠΎΡΠ½ΠΎΠ³ Π²ΠΎΠ·ΠΈΠ»Π° Π½Π° Π΄ΠΈΠ½Π°ΠΌΠΎΠΌΠ΅ΡΡΠΈΡΡΠΊΠΎΠΌ ΠΏΡΠΎΠ±Π½ΠΎΠΌ ΡΡΠΎΠ»Ρ Π·Π° ΠΈΡΠΏΠΈΡΠΈΠ²Π°ΡΠ΅
ΠΊΠΎΡΠ½ΠΈΡΠ°. ΠΠ°ΠΊΠΎΠ½ Π»Π°Π±ΠΎΡΠ°ΡΠΎΡΠΈΡΡΠΊΠΈΡ
ΠΈΡΠΏΠΈΡΠΈΠ²Π°ΡΠ°, ΡΠ΅Π·ΡΠ»ΡΠ°ΡΠΈ ΠΎΠ²ΠΈΡ
ΡΠ΅ΡΡΠΎΠ²Π° ΡΡ
ΠΈΡΠΊΠΎΡΠΈΡΡΠ΅Π½ΠΈ ΡΠ°Π΄ΠΈ ΡΠΎΡΠΌΠΈΡΠ°ΡΠ° ΠΌΠ°ΡΠ΅ΠΌΠ°ΡΠΈΡΠΊΠΈΡ
ΠΌΠΎΠ΄Π΅Π»Π° ΡΡΠ΅ΡΠ°, Ρ
Π°Π±Π°ΡΠ° ΠΈ ΡΠ°Π΄Π° ΠΊΠΎΡΠ΅ΡΠ° Ρ
ΡΠΈΡΠ°Π²ΠΎΠΌ ΠΆΠΈΠ²ΠΎΡΠ½ΠΎΠΌ Π²Π΅ΠΊΡ ΠΊΠΎΡΠ½ΠΈΡΠ΅. ΠΠ° ΠΎΡΠ½ΠΎΠ²Ρ ΡΠ΅Π·ΡΠ»ΡΠ°ΡΠ° Π΅ΠΊΡΠΏΠ΅ΡΠΈΠΌΠ΅Π½ΡΠ°Π»Π½ΠΈΡ
ΠΈ ΡΠ΅ΠΎΡΠ΅ΡΡΠΊΠΈΡ
ΠΈΡΡΡΠ°ΠΆΠΈΠ²Π°ΡΠ° ΠΈΠ·Π²ΡΡΠ΅Π½Π° ΡΠ΅ ΠΏΡΠΎΡΠ΅Π½Π° Π²ΡΠ΅Π΄Π½ΠΎΡΡΠΈ Π΅Π½Π΅ΡΠ³Π΅ΡΡΠΊΠΎΠ³ ΠΏΠΎΡΠ΅Π½ΡΠΈΡΠ°Π»Π° Π΄Π°ΡΠ΅ ΠΊΠΎΡΠ½ΠΈΡΠ΅ ΠΈ Π΄Π°Ρ ΡΠ΅ ΠΏΡΠ΅Π΄Π»ΠΎΠ³ Π°Π»Π³ΠΎΡΠΈΡΠΌΠ°
Π·Π° Π°Π΄Π°ΠΏΡΠΈΠ²Π½ΠΈ ΡΠΈΡΡΠ΅ΠΌ ΡΡΠΏΠ°Π²Π°ΡΠ° ΠΏΡΠΎΡΠ΅ΡΠΎΠΌ ΠΊΠΎΡΠ΅ΡΠ°.Braking is a complex stochastic and tribological process characterized by the significant
variation of input energy status of a specific tribo-mechanical system whereby energy of
motion of vehicle is irrevocably converted into heat and dissipated into the environment. At
road vehicles equipped with conventional friction brakes, braking is an extremely
unfavorable energy transformation process from energy consumption and recuperation
point of view in which energy is irretrievably lost. That is why the question might be raised
whether there are any possibilities to manage the brake energy consumption in friction
brakes, i.e. would it be possible to manage both work done by the brake and brake wear in
order to maximize both the efficiency and life of braking systems and what would be
amount of energy that a given brake will transform during its service life? In other words,
the question is how big the energy potential of a given brake would be and how to use
and/or dissipate it in the best possible manner with no risk to jeopardize achieving of high
enough braking performance?
Brake performance evaluation is usually based upon realized deceleration, stopping
distance, brake torque and similarly, it does not comprise braking power/energy rate
characterization. However, brake performance realization basically depends on βwhat was
available in the brakeβ i.e. βgenericβ or initial energy potential/capacity of a given brake
and βhow this was consumedβ under given load conditions and the way brake was used
during its service life.
Furthermore, acquiring the quantity of generic energy potential of the given brake one may
manage braking process in order to optimize interdependence between brake performance
and its service life i.e. wear. Most vehicles are nowadays already equipped with different sensors (speed, application pressure, temperature) and that is why it might be feasible to
measure actual value of the brake energy potential in every moment in time of operation.
That is how individual brake influencing parameters can be managed simultaneously by
means of an appropriate algorithm so as to optimise requested brake performance with the
projected brake service life.
Brake energy potential is defined by its performance, service life and friction coefficient
stability. It tells us how many braking energy has to be spent before brake lining/pad is
reaching its physical wear limit. In order to assess it all influential factors are to be
identified and analyzed, and the procedure of doing so is demonstrated in the paper. With
this aim, numerous tests were carried out with samples of passenger car disk brakes under
laboratory conditions by means of single-ended full-scale inertia dynamometer. Afterwards,
results of these tests were used to establish an analytical model which enables us to
estimate friction, wear and work done by the brake for a given braking application and the
whole service life.
Based on the results of experimental and theoretical studies that have been conducted
energy potential rate for the given brake may be assessed. Finally, the idea for an algorithm
of braking management based on the optimization of brake potential is outlined
Contribution to the research of oscillatory loads of sprung and unsprung masses in order to create conditions for laboratory tests of heavy motor vehicles
Introduction/purpose: Motor vehicles are complex dynamic systems due to spatial displacements, changes in the characteristics of components during their lifetime, a large number of influences and disturbances, the appearance of backlash, friction, hysteresis, etc. The aforementioned dynamic phenomena, especially vibrations, cause driver and passenger fatigue, reduce the lifetime of the vehicle and its systems, etc. Methods: In general, the movement of vehicles is carried out on uneven roads and curvilinear paths in the road. Not only do oscillatory movements cause material fatigue of vehicle parts, but they also have a negative effect on people's health. That is why special attention must be paid to the coordination of the mutual movement of the subsystems, and in particular, the vehicle suspension system, even at the stage of the motor vehicle design. For these purposes, theoretical, experimental or combined methods can be used. Therefore, it is very useful to have the experimental results of the oscillations of the vehicle subsystem in operating conditions, so the aim of this work was to use the movement of the 4x4 drive FAP 1118 vehicle in operating conditions (due to higher speeds - in road conditions) to define the conditions for testing oscillatory loads in laboratory conditions. Results:This is made possible by registering and identifying statistical parameters of registered quantities. Conclusion: Based on the measured data, the research can be programmed on shakers in laboratory conditions, and, at the same time, the size to be reproduced can be chosen as well
Energy potential of friction brake
ΠΠΎΡΠ΅ΡΠ΅ ΠΏΡΠ΅Π΄ΡΡΠ°Π²ΡΠ° ΠΊΠΎΠΌΠΏΠ»Π΅ΠΊΡΠ°Π½ ΡΡΠΎΡ
Π°ΡΠΈΡΡΠΊΠΈ ΠΈ ΡΡΠΈΠ±ΠΎΠ»ΠΎΡΠΊΠΈ ΠΏΡΠΎΡΠ΅Ρ ΠΊΠΎΡΠΈ ΠΊΠ°ΡΠ°ΠΊΡΠ΅ΡΠΈΡΡ
Π·Π½Π°ΡΠ°ΡΠ½Π΅ ΠΏΡΠΎΠΌΠ΅Π½Π΅ ΡΠ»Π°Π·Π½Π΅ Π΅Π½Π΅ΡΠ³ΠΈΡΠ΅ ΠΊΠΎΡΠ° Π΅Π½Π΅ΡΠ³ΠΈΡΡ ΠΊΡΠ΅ΡΠ°ΡΠ° Π²ΠΎΠ·ΠΈΠ»Π° Π½Π΅ΠΏΠΎΠ²ΡΠ°ΡΠ½ΠΎ ΠΏΡΠ΅ΡΠ²Π°ΡΠ°
Ρ ΡΠΎΠΏΠ»ΠΎΡΠ½Ρ Π΅Π½Π΅ΡΠ³ΠΈΡΡ ΠΏΡΠΈ ΡΠ΅ΠΌΡ ΡΠ΅ ΡΠ° Π΅Π½Π΅ΡΠΈΡΠ° ΠΏΡΠ΅Π΄Π°ΡΠ΅ ΠΎΠΊΠΎΠ»ΠΈΠ½ΠΈ. Π£ Π΄ΡΡΠΌΡΠΊΠΈΠΌ Π²ΠΎΠ·ΠΈΠ»ΠΈΠΌΠ°
ΠΎΠΏΡΠ΅ΠΌΡΠ΅Π½ΠΈΠΌ ΠΊΠΎΠ½Π²Π΅Π½ΡΠΈΠΎΠ½Π°Π»Π½ΠΈΠΌ ΠΊΠΎΡΠ½ΠΈΡΠ°ΠΌΠ°, ΠΊΠΎΡΠ΅ΡΠ΅ ΠΏΡΠ΅Π΄ΡΡΠ°Π²ΡΠ° Π΅ΠΊΡΡΡΠ΅ΠΌΠ½ΠΎ Π½Π΅ΠΏΠΎΠ²ΠΎΡΠ°Π½
ΠΏΡΠΎΡΠ΅Ρ ΡΠ° ΡΡΠ°Π½ΠΎΠ²ΠΈΡΡΠ° ΡΡΠ°Π½ΡΡΠΎΡΠΌΠ°ΡΠΈΡΠ΅ ΠΈ ΡΠ΅ΠΊΡΠΏΠ΅ΡΠ°ΡΠΈΡΠ΅ Π΅Π½Π΅ΡΠ³ΠΈΡΠ΅ Ρ ΠΊΠΎΡΠ΅ΠΌ ΡΠ΅ Π΅Π½Π΅ΡΠ³ΠΈΡΠ°
Π½Π΅ΠΏΠΎΠ²ΡΠ°ΡΠ½ΠΎ Π³ΡΠ±ΠΈ. ΠΠ· ΠΎΠ²ΠΎΠ³ ΡΠ°Π·Π»ΠΎΠ³Π° ΡΠ΅ ΠΏΠΎΡΡΠ°Π²ΡΠ° ΠΏΠΈΡΠ°ΡΠ΅ Π΄Π° Π»ΠΈ ΠΏΠΎΡΡΠΎΡΠΈ ΠΌΠΎΠ³ΡΡΠ½ΠΎΡΡ
ΡΠΏΡΠ°Π²ΡΠ°ΡΠ° ΠΊΠΎΠ»ΠΈΡΠΈΠ½ΠΎΠΌ Π΅Π½Π΅ΡΠ³ΠΈΡΠ΅ ΠΊΠΎΡΠ° ΡΠ΅ ΡΡΡΠΎΡΠΈ Ρ ΡΡΠΈΠΊΡΠΈΠΎΠ½ΠΈΠΌ ΠΊΠΎΡΠ½ΠΈΡΠ°ΠΌΠ°, ΠΎΠ΄Π½ΠΎΡΠ½ΠΎ Π΄Π°
Π»ΠΈ ΠΏΠΎΡΡΠΎΡΠΈ ΠΌΠΎΠ³ΡΡΠ½ΠΎΡΡ ΡΠΏΡΠ°Π²ΡΠ°ΡΠ° ΡΠ°Π΄ΠΎΠΌ ΠΊΠΎΡΠ΅ΡΠ° ΠΈ Ρ
Π°Π±Π°ΡΠ΅ΠΌ Ρ ΠΏΡΠΎΡΠ΅ΡΡ ΠΊΠΎΡΠ΅ΡΠ° Ρ ΡΠΈΡΡ
ΠΌΠ°ΠΊΡΠΈΠΌΠ°Π»Π½ΠΎΠ³ ΠΎΡΡΠ²Π°ΡΠ΅ΡΠ° Π΅ΡΠΈΠΊΠ°ΡΠ½ΠΎΡΡΠΈ ΠΏΡΠΎΡΠ΅ΡΠ° ΠΊΠΎΡΠ΅ΡΠ° ΠΈ ΠΆΠΈΠ²ΠΎΡΠ½ΠΎΠ³ Π²Π΅ΠΊΠ° ΠΊΠΎΡΠ½ΠΎΠ³
ΡΠΈΡΡΠ΅ΠΌΠ°, ΠΊΠ°ΠΎ ΠΈ ΠΊΠΎΡΠΈ ΡΠ΅ ΠΈΠ·Π½ΠΎΡ Π΅Π½Π΅ΡΠ³ΠΈΡΠ΅ ΠΊΠΎΡΠΈ ΠΊΠΎΡΠ½ΠΈΡΠ° ΠΌΠΎΠΆΠ΅ Π΄Π° ΡΡΠ°Π½ΡΡΠΎΡΠΌΠΈΡΠ΅ ΠΎΠ΄Π½ΠΎΡΠ½ΠΎ
ΠΏΡΠΈΠΌΠΈ ΡΠΎΠΊΠΎΠΌ ΠΆΠΈΠ²ΠΎΡΠ½ΠΎΠ³ Π²Π΅ΠΊΠ°? ΠΡΡΠ³ΠΈΠΌ ΡΠ΅ΡΠΈΠΌΠ°, ΠΏΠΈΡΠ°ΡΠ΅ ΡΠ΅ ΠΊΠΎΠ»ΠΈΠΊΠΈ ΡΠ΅ Π΅Π½Π΅ΡΠ³Π΅ΡΡΠΊΠΈ
ΠΏΠΎΡΠ΅Π½ΡΠΈΡΠ°Π» Π΄Π°ΡΠ΅ ΠΊΠΎΡΠ½ΠΈΡΠ΅ ΠΈ ΠΊΠ°ΠΊΠΎ ΡΠ΅ ΠΈΡΡΠΈ ΠΌΠΎΠΆΠ΅ ΠΈΡΠΊΠΎΡΠΈΡΡΠΈΡΠΈ ΡΠ· ΡΡΠ»ΠΎΠ² Π΄Π° ΡΠ΅ Π½Π΅ Π½Π°ΡΡΡΠ΅
Π΄Π΅ΠΊΠ»Π°ΡΠΈΡΠ°Π½Π΅ ΠΊΠΎΡΠ½Π΅ ΠΏΠ΅ΡΡΠΎΡΠΌΠ°Π½ΡΠ΅?
ΠΠ΅ΠΊΠ»Π°ΡΠΈΡΠ°Π½Π΅ ΠΊΠΎΡΠ½Π΅ ΠΏΠ΅ΡΠΎΡΠΌΡΠ°Π½ΡΠ΅ ΡΠ΅, ΠΎΠ±ΠΈΡΠ½ΠΎ, ΠΎΡΠ΅ΡΡΡΡ Π½Π° Π±Π°Π·ΠΈ Π·Π°ΡΡΡΠ°Π²Π½ΠΎΠ³ ΠΏΡΡΠ°,
ΠΎΡΡΠ²Π°ΡΠ΅Π½ΠΎΠ³ ΡΡΠΏΠΎΡΠ΅ΡΠ°, ΠΊΠΎΡΠ½ΠΎΠ³ ΠΌΠΎΠΌΠ΅Π½ΡΠ° ΠΈ ΡΠ». Π£ ΠΎΠ²ΠΎΠΌ ΡΠ»ΡΡΠ°ΡΡ ΡΠ΅ Π½Π΅ ΡΠ°Π·ΠΌΠ°ΡΡΠ° ΠΎΡΡΠ²Π°ΡΠ΅Π½Π°
ΡΠ½Π°Π³Π° ΠΊΠΎΡΠ΅ΡΠ°, ΠΎΠ΄Π½ΠΎΡΠ½ΠΎ ΡΠ°Π΄ ΠΊΠΎΡΠ΅ΡΠ°. ΠΠ΅ΡΡΡΠΈΠΌ, ΠΊΠΎΡΠ½Π΅ ΠΏΠ΅ΡΡΠΎΡΠΌΠ°Π½ΡΠ΅, ΠΏΡΠ΅ ΡΠ²Π΅Π³Π° Π·Π°Π²ΠΈΡΠ΅ ΠΎΠ΄
ΡΠΎΠ³Π° βΠΊΠ°ΠΊΠ²Π΅ ΡΡ ΠΌΠΎΠ³ΡΡΠ½ΠΎΡΡΠΈ ΠΊΠΎΡΠ½ΠΈΡΠ΅β, ΠΎΠ΄Π½ΠΎΡΠ½ΠΎ ΠΊΠ°ΠΊΠ°Π² ΡΠ΅ ΠΊΠ°ΠΏΠ°ΡΠΈΡΠ΅Ρ, ΠΎΠ΄Π½ΠΎΡΠ½ΠΎ, Π³Π΅Π½Π΅ΡΠΈΡΠΊΠΈ
ΠΈΠ»ΠΈ ΠΈΠ½ΡΠΈΡΠ°Π»Π½ΠΈ ΠΏΠΎΡΠ΅Π½ΡΠΈΡΠ°Π» Π΄Π°ΡΠ΅ ΠΊΠΎΡΠ½ΠΈΡΠ΅ ΠΈ Π½Π° ΠΊΠΎΡΠΈ Π½Π°ΡΠΈΠ½ ΡΠ΅ ΡΠ° Π΅Π½Π΅ΡΠ³ΠΈΡΠ° ΠΌΠΎΠΆΠ΅
ΠΈΡΠΊΠΎΡΠΈΡΡΠΈΡΠΈ Ρ Π΄Π°ΡΠΈΠΌ ΡΠ°Π΄Π½ΠΈΠΌ ΡΡΠ»ΠΎΠ²ΠΈΠΌΠ° Ρ ΡΠΎΠΊΡ ΠΆΠΈΠ²ΠΎΡΠ½ΠΎΠ³ Π²Π΅ΠΊΠ° ΠΊΠΎΡΠ½ΠΈΡΠ΅.
Π’Π°ΠΊΠΎΡΠ΅, ΠΏΠΎΠ·Π½Π°Π²Π°ΡΠ΅ Π²ΡΠ΅Π΄Π½ΠΎΡΡΠΈ Π΅Π½Π΅ΡΠ³Π΅ΡΡΠΊΠΎΠ³ ΠΏΠΎΡΠ΅Π½ΡΠΈΡΠ°Π»Π° Π΄Π°ΡΠ΅ ΠΊΠΎΡΠ½ΠΈΡΠ΅, ΠΎΠΌΠΎΠ³ΡΡΠ°Π²Π°
ΡΠΏΡΠ°Π²ΡΠ°ΡΠ΅ ΠΏΡΠΎΡΠ΅ΡΠΎΠΌ ΠΊΠΎΡΠ΅ΡΠ° Ρ ΡΠΈΡΡ ΠΎΠΏΡΠΈΠΌΠΈΠ·Π°ΡΠΈΡΠ΅ ΠΌΠ΅ΡΡΠ·Π°Π²ΠΈΡΠ½ΠΎΡΡΠΈ ΠΈΠ·ΠΌΠ΅ΡΡ ΠΊΠΎΡΠ½ΠΈΡ
ΠΏΠ΅ΡΡΠΎΡΠΌΠ°Π½ΡΠΈ ΠΈ ΡΠ΅Π½ΠΎΠ³ ΠΆΠΈΠ²ΠΎΡΠ½ΠΎΠ³ Π²Π΅ΠΊΠ°, ΠΎΠ΄Π½ΠΎΡΠ½ΠΎ Ρ
Π°Π±Π°ΡΠ°. ΠΠ΅ΡΠΈΠ½Π° ΡΠ°Π²ΡΠ΅ΠΌΠ΅Π½Π½ΠΈΡ
Π²ΠΎΠ·ΠΈΠ»Π° ΡΠ΅ Π΄Π°Π½Π°Ρ ΠΎΠΏΡΠ΅ΠΌΡΠ΅Π½Π° ΡΠ°Π·Π»ΠΈΡΠΈΡΠΈΠΌ ΡΠ΅Π½Π·ΠΎΡΠΈΠΌΠ° (Π±ΡΠ·ΠΈΠ½Π΅, ΠΎΠ΄Π½ΠΎΡΠ½ΠΎ Π±ΡΠΎΡΠ° ΠΎΠ±ΡΡΠ°ΡΠ° ΡΠΎΡΠΈΡΠ°ΡΡΡΠ΅Π³
Π΅Π»Π΅ΠΌΠ΅Π½ΡΠ°, ΠΏΡΠΈΡΠΈΡΠΊΠ° Π°ΠΊΡΠΈΠ²ΠΈΡΠ°ΡΠ° ΠΊΠΎΡΠ½ΠΈΡΠ΅ ΠΈ ΡΠ΅ΠΌΠΏΠ΅ΡΠ°ΡΡΡΠ΅ ΡΡΠΈΠΊΡΠΈΠΎΠ½Π΅ ΠΏΠΎΡΠ²ΡΡΠΈΠ½Π΅) Π½Π°
ΠΎΡΠ½ΠΎΠ²Ρ ΠΊΠΎΡΠΈΡ
ΡΠ΅ ΠΎΠΌΠΎΠ³ΡΡΠ°Π²Π° ΠΌΠ΅ΡΠ΅ΡΠ΅ Π΅Π½Π΅ΡΠ³Π΅ΡΡΠΊΠΎΠ³ ΠΏΠΎΡΠ΅Π½ΡΠΈΡΠ°Π»Π° Ρ ΡΠ²Π°ΠΊΠΎΠΌ ΡΡΠ΅Π½ΡΡΠΊΡ
ΠΆΠΈΠ²ΠΎΡΠ½ΠΎΠ³ Π²Π΅ΠΊΠ° ΠΊΠΎΠ½ΠΈΡΠ΅. ΠΠ° ΠΎΠ²Π°Ρ Π½Π°ΡΠΈΠ½ ΡΠ΅ ΠΌΠΎΠΆΠ΅ ΡΠΏΡΠ°Π²ΡΠ°ΡΠΈ ΡΡΠΈΡΠ°ΡΠ½ΠΈΠΌ ΠΏΠ°ΡΠ°ΠΌΠ΅ΡΡΠΈΠΌΠ° Π½Π°
Π΅Π½Π΅ΡΠ³Π΅ΡΡΠΊΠΈ ΠΏΠΎΡΠ΅Π½ΡΠΈΡΠ°Π» ΠΊΠΎΡΠ½ΠΈΡΠ΅ ΠΏΡΠ΅ΠΌΠ° ΠΎΠ΄ΠΎΠ³ΠΎΠ²Π°ΡΠ°ΡΡΡΠ΅ΠΌ Π°Π»ΠΎΠ³ΡΠΈΡΠΌΡ ΠΊΠ°ΠΊΠΎ Π±ΠΈ ΡΠ΅
ΠΎΠΏΡΠΈΠΌΠΈΠ·ΠΎΠ²Π°Π»Π΅ ΠΊΠΎΡΠ½ΡΠ΅ ΠΏΠ΅ΡΡΠΎΡΠΌΠ°Π½ΡΠ΅ Ρ ΡΠΎΠΊΡ ΠΆΠΈΠ²ΠΎΡΠ½ΠΎΠ³ Π²Π΅ΠΊΠ° ΠΊΠΎΡΠ½ΠΈΡΠ΅.
ΠΠ½Π΅ΡΠ³Π΅ΡΡΠΊΠΈ ΠΏΠΎΡΠ΅Π½ΡΠΈΡΠ°Π» ΠΊΠΎΠ½ΠΈΡΠ΅ ΡΠ΅ Π΄Π΅ΡΠΈΠ½ΠΈΡΠ°Π½ ΠΆΠΈΠ²ΠΎΡΠ½ΠΈΠΌ Π²Π΅ΠΊΠΎΠΌ ΠΊΠΎΡΠ½ΠΈΡΠ΅, ΡΠ΅Π½ΠΈΠΌ
ΠΏΠ΅ΡΡΠΎΡΠΌΠ°Π½ΡΠ°ΠΌΠ° ΠΈ ΡΡΠ°Π±ΠΈΠ»Π½ΠΎΡΡΡ ΠΊΠΎΠ΅ΡΠΈΡΠΈΡΠ΅Π½ΡΠ° ΡΡΠ΅ΡΠ°. ΠΠ½Π΅ΡΠ³Π΅ΡΡΠΊΠΈ ΠΏΠΎΡΠ΅Π½ΡΠΈΡΠ°Π» ΠΊΠΎΡΠ½ΠΈΡΠ΅
Π³ΠΎΠ²ΠΎΡΠΈ ΠΊΠΎΠ»ΠΈΠΊΠΎ ΡΠ΅ Π΅Π½Π΅ΡΠ³ΠΈΡΠ΅ ΠΊΠΎΡΠ΅ΡΠ° ΠΌΠΎΠΆΠ΅ ΡΡΡΠΎΡΠΈΡΠΈ ΠΏΡΠ΅ ΡΠ΅Π½ΠΎΠ³ ΠΏΠΎΡΠΏΡΠ½ΠΎΠ³ (ΡΠΈΠ·ΠΈΡΠΊΠΎΠ³)
ΠΈΡΡΡΠΎΡΠ΅ΡΠ°. Π£ ΡΠΈΡΡ ΠΎΡΠ΅Π½Π΅ Π΅Π½Π΅ΡΠ³Π΅ΡΡΠΊΠΎΠ³ ΠΏΠΎΡΠ΅Π½ΡΠΈΡΠ°Π»Π° ΠΊΠΎΡΠ½ΠΈΡΠ΅, ΠΌΠΎΡΠ°ΡΡ ΡΠ΅
ΠΈΠ΄Π΅Π½ΡΠΈΡΠΈΠΊΠΎΠ²Π°ΡΠΈ, ΠΎΠ΄Π½oΡΠ½ΠΎ ΠΊΠ²Π°Π»ΠΈΡΠΈΠΊΠΎΠ²Π°ΡΠΈ ΠΈ ΠΊΠ²Π°Π½ΡΠΈΡΠΈΠΊΠΎΠ²Π°ΡΠΈ ΡΠ²ΠΈ ΡΡΠΈΡΠ°ΡΠ½ΠΈ ΠΏΠ°ΡΠ°ΠΌΠ΅ΡΡΠΈ.
Π£ ΡΠΎΠΌ ΡΠΈΡΡ, ΡΠΏΡΠΎΠ²Π΅Π΄Π΅Π½Π° ΡΡ Π±ΡΠΎΡΠ½Π° Π΅ΠΊΡΠΏΠ΅ΡΠΈΠΌΠ΅Π½ΡΠ°Π»Π½Π° ΠΈΡΠΏΠΈΡΠΈΠ²Π°ΡΠ° Π½Π° ΠΊΠΎΡΠ½ΠΈΡΠΈ
ΠΏΡΡΠ½ΠΈΡΠΊΠΎΠ³ ΠΌΠΎΡΠΎΡΠ½ΠΎΠ³ Π²ΠΎΠ·ΠΈΠ»Π° Π½Π° Π΄ΠΈΠ½Π°ΠΌΠΎΠΌΠ΅ΡΡΠΈΡΡΠΊΠΎΠΌ ΠΏΡΠΎΠ±Π½ΠΎΠΌ ΡΡΠΎΠ»Ρ Π·Π° ΠΈΡΠΏΠΈΡΠΈΠ²Π°ΡΠ΅
ΠΊΠΎΡΠ½ΠΈΡΠ°. ΠΠ°ΠΊΠΎΠ½ Π»Π°Π±ΠΎΡΠ°ΡΠΎΡΠΈΡΡΠΊΠΈΡ
ΠΈΡΠΏΠΈΡΠΈΠ²Π°ΡΠ°, ΡΠ΅Π·ΡΠ»ΡΠ°ΡΠΈ ΠΎΠ²ΠΈΡ
ΡΠ΅ΡΡΠΎΠ²Π° ΡΡ
ΠΈΡΠΊΠΎΡΠΈΡΡΠ΅Π½ΠΈ ΡΠ°Π΄ΠΈ ΡΠΎΡΠΌΠΈΡΠ°ΡΠ° ΠΌΠ°ΡΠ΅ΠΌΠ°ΡΠΈΡΠΊΠΈΡ
ΠΌΠΎΠ΄Π΅Π»Π° ΡΡΠ΅ΡΠ°, Ρ
Π°Π±Π°ΡΠ° ΠΈ ΡΠ°Π΄Π° ΠΊΠΎΡΠ΅ΡΠ° Ρ
ΡΠΈΡΠ°Π²ΠΎΠΌ ΠΆΠΈΠ²ΠΎΡΠ½ΠΎΠΌ Π²Π΅ΠΊΡ ΠΊΠΎΡΠ½ΠΈΡΠ΅. ΠΠ° ΠΎΡΠ½ΠΎΠ²Ρ ΡΠ΅Π·ΡΠ»ΡΠ°ΡΠ° Π΅ΠΊΡΠΏΠ΅ΡΠΈΠΌΠ΅Π½ΡΠ°Π»Π½ΠΈΡ
ΠΈ ΡΠ΅ΠΎΡΠ΅ΡΡΠΊΠΈΡ
ΠΈΡΡΡΠ°ΠΆΠΈΠ²Π°ΡΠ° ΠΈΠ·Π²ΡΡΠ΅Π½Π° ΡΠ΅ ΠΏΡΠΎΡΠ΅Π½Π° Π²ΡΠ΅Π΄Π½ΠΎΡΡΠΈ Π΅Π½Π΅ΡΠ³Π΅ΡΡΠΊΠΎΠ³ ΠΏΠΎΡΠ΅Π½ΡΠΈΡΠ°Π»Π° Π΄Π°ΡΠ΅ ΠΊΠΎΡΠ½ΠΈΡΠ΅ ΠΈ Π΄Π°Ρ ΡΠ΅ ΠΏΡΠ΅Π΄Π»ΠΎΠ³ Π°Π»Π³ΠΎΡΠΈΡΠΌΠ°
Π·Π° Π°Π΄Π°ΠΏΡΠΈΠ²Π½ΠΈ ΡΠΈΡΡΠ΅ΠΌ ΡΡΠΏΠ°Π²Π°ΡΠ° ΠΏΡΠΎΡΠ΅ΡΠΎΠΌ ΠΊΠΎΡΠ΅ΡΠ°.Braking is a complex stochastic and tribological process characterized by the significant
variation of input energy status of a specific tribo-mechanical system whereby energy of
motion of vehicle is irrevocably converted into heat and dissipated into the environment. At
road vehicles equipped with conventional friction brakes, braking is an extremely
unfavorable energy transformation process from energy consumption and recuperation
point of view in which energy is irretrievably lost. That is why the question might be raised
whether there are any possibilities to manage the brake energy consumption in friction
brakes, i.e. would it be possible to manage both work done by the brake and brake wear in
order to maximize both the efficiency and life of braking systems and what would be
amount of energy that a given brake will transform during its service life? In other words,
the question is how big the energy potential of a given brake would be and how to use
and/or dissipate it in the best possible manner with no risk to jeopardize achieving of high
enough braking performance?
Brake performance evaluation is usually based upon realized deceleration, stopping
distance, brake torque and similarly, it does not comprise braking power/energy rate
characterization. However, brake performance realization basically depends on βwhat was
available in the brakeβ i.e. βgenericβ or initial energy potential/capacity of a given brake
and βhow this was consumedβ under given load conditions and the way brake was used
during its service life.
Furthermore, acquiring the quantity of generic energy potential of the given brake one may
manage braking process in order to optimize interdependence between brake performance
and its service life i.e. wear. Most vehicles are nowadays already equipped with different sensors (speed, application pressure, temperature) and that is why it might be feasible to
measure actual value of the brake energy potential in every moment in time of operation.
That is how individual brake influencing parameters can be managed simultaneously by
means of an appropriate algorithm so as to optimise requested brake performance with the
projected brake service life.
Brake energy potential is defined by its performance, service life and friction coefficient
stability. It tells us how many braking energy has to be spent before brake lining/pad is
reaching its physical wear limit. In order to assess it all influential factors are to be
identified and analyzed, and the procedure of doing so is demonstrated in the paper. With
this aim, numerous tests were carried out with samples of passenger car disk brakes under
laboratory conditions by means of single-ended full-scale inertia dynamometer. Afterwards,
results of these tests were used to establish an analytical model which enables us to
estimate friction, wear and work done by the brake for a given braking application and the
whole service life.
Based on the results of experimental and theoretical studies that have been conducted
energy potential rate for the given brake may be assessed. Finally, the idea for an algorithm
of braking management based on the optimization of brake potential is outlined