Image: ZF
“Renew brake fluid”: This defect is a classic in §57a inspections. In order to preserve the oil, the hydraulic fluid must be replaced because the water content in the old oil is too high and therefore the boiling point is too low. If the boiling point is below 150 degrees and if the water content is more than two percent, there is a “severe deficiency”. Replacing the brake fluid costs between 50 and 100 euros.
Drivers should save this money in the future, at least if the car supplier ZF has its way. The technology group has developed a brake-by-wire system in which electrical impulses, rather than hydraulic oil, transmit the braking command.
This type of braking system can demonstrate its advantages and open up new freedom in design and development, particularly in software-defined and electrically driven vehicles, says Holger Klein, CEO of the ZF Group. In addition, the braking distance is shortened. With automatic emergency braking, the braking distance at a speed of 100 km/h can be up to nine meters shorter than with conventional braking systems. In addition, electric cars can achieve up to 17 percent more range through even better recovery of braking energy.
Less fine dust
Especially with dry brake-by-wire systems, the residual grinding torques that arise due to minimal contact between the brake pads and the brake discs can be reduced to almost zero. This means there are fewer fine dust emissions caused by brake wear, and energy is saved thanks to the even lower resistance when driving.
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