E144 — Modular 1-Box Architecture & ECU Sensors

The E144WO1 and E144WO2 subfamilies together form a closed protection concept for a complete BBW brake actuator module: the modular 1-box architecture (WO1) defines the spatial arrangement and housing structure, while the integrated sensor solutions (WO2) implement high-precision and redundant status detection within that architecture.

The direct integration of sensor elements on the ECU board eliminates external cabling, reduces potential sources of error, and enables cost-efficient manufacturing with plastic components. The rack-and-pinion mechanism inside the ECU converts the linear travel of the brake pedal or piston into rotation of a button-cell-sized permanent magnet, which is then read by a Hall-effect sensor on the PCB — achieving sub-micrometer resolution without any sensor housing outside the ECU.

E144WO1 secures the compact transverse stacked packaging architecture across US and CN. E144WO2 secures the ECU-integrated sensor concept across US, CN, and EP — representing the stronger commercial protection.