ESC at a glance

Auto components India - - CORPORATE -

Elec­tronic sta­bil­ity con­trol sys­tems in trucks and large buses are de­signed to re­duce un­tripped rollovers and mit­i­gate se­vere un­der­steer or over­steer con­di­tions that lead to loss of con­trol by us­ing au­to­matic com­puter-con­trolled brak­ing and re­duc­ing engine torque out­put. ESC uses a com­puter and sen­sors to de­tect when the front or rear of a ve­hi­cle is mov­ing in­con­sis­tently with the po­si­tion of the steer­ing wheel. The sys­tem can brake a sin­gle wheel to nudge the ve­hi­cle back on course.

ESC com­bines rollover pro­tec­tion with di­rec­tional sta­bil­ity to re­duce the like­li­hood of spinout and driftout. It be­comes ac­tive when the sys­tem senses con­di­tions that could pro­duce im­mi­nent di­rec­tional or roll in­sta­bil­i­ties, of­ten be­fore the driver is aware of them. Once the ESC start func­tion­ing, it re­duces the engine torque and low­ers the speed of the ve­hi­cle. The rollover con­trol func­tion­al­ity lim­its the lat­eral ac­cel­er­a­tion of the ve­hi­cle to a pre-de­fined value which is de­pen­dent on the ve­hi­cle mass. When the ve­hi­cle reaches this max­i­mum value, all the wheels of the tow­ing ve­hi­cle and the trailer are braked. to re­duce speed.

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