Engine brake onli applys for manual cars...It is used to effectively reduce the speed of yr car to prevent accident....To slow down or wat,its advicible to use foot brakes....changing of foot brakes is cheaper and also changing of the whole gear box will be more EXP lor...
Engine brake is whereby...
Lower gear have a bigger area(a radius of a circle)
Higer gear have a smaller area..
But lower gear is slower spinning(The circle spin and carry the wheels gear together so its moves....bigger make it more power but less speed lor)
Higher gear smaller but very fast spinning lor..then its grip of the wheel gear is much smaller so less power....
So when engine brake is perform....
4th gear to 1st gear(eg.)
Then The fast spinning wheel gear will be then force to slow down rapidly by the big circle of the lower gear and thus reducing the speed very rapidly..thus known as engine brake...
Dunno if I make any sense to u guys...wahha
