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And why is this such a big deal? Well, it says that semi-dry brakes represent the next generation of braking, and that such systems are “essential for drivers to be able to safely access additional electrification and automated driving features.”
To find out what difference this will make for us in a real-world context, and when, we caught up with Martin Bechel, Head of Systems Development Future Brake Systems, Continental
Interesting engineering: what inspired this development in the first place?
Martin Bechel: In today’s brake systems, the pressure generation is fully integrated into the brake system unit. This means that the hydraulics (i.e. the “wet” part of the brake system) transmit the force to the brake calipers of disc brakes or drum brakes.
Whereas with our approach, you no longer hydraulically brake the rear axle, and we see some clear benefits to this.
For one, brake fluid doesn’t have to be replaced or disposed of, so it’s more durable.
In addition, installation of the rear axle is simplified, as rigid hydraulic lines can be dispensed with.
And, if the rear axle wheel brakes are electromechanically operated, you can use them regeneratively. For example, for systematic energy recharge on the rear axle during each braking operation. Additionally, the electric rear axle brake actuator combines the normal brake function (i.e. vehicle deceleration) with a comfortable electric park brake function, so it’s a smoother driving experience.
Did you achieve what you set out to achieve?
Yes, we have achieved everything we set out to do. We saw at the outset that with digitization and connectivity, electric powertrains and automated driving, brake systems need to perform a range of functions.
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