E136— 自适应 DAP 压力供应

车辆制动系统双作用活塞概念的研发始于2014年，作为IPGATE第二代集成制动系统（IBS 2）的一部分。核心问题在于如何为现代制动系统提供充足的压力介质容积，特别是针对低摩擦制动器、对容积要求较高的SUV/厢式车，以及制动衰减情况，同时不影响容错能力和备用功能水平。

The earlier solutions (e.g., storage chamber concepts from DE 10 2011 009059, DE 10 2011 111368) had in common that they either placed high demands on valve tightness, interrupted pressure build-up during long braking operations, or subjected the spindle and ball screw drive to additional axial forces. The basic idea behind the E136 invention — the use of a double-acting piston (DAP) that delivers controlled pressure medium to the brake circuits during both the forward and return strokes — fundamentally solves the problem of pressure interruption: Since both piston strokes are used for pressure supply, theoretically unlimited volume delivery with high dynamics (switching time <10 ms) is possible without interrupting the pressure build-up.

通过电磁阀对两个压力腔进行自适应阀控连接，实现了两级液压传动的工作原理：在低压范围内，较大的有效活塞面积可提供大流量；而在高压范围内，压力腔的连接切换至较小的有效面积，从而显著降低了所需的电机扭矩。这使得总长度缩短了约48毫米，主缸行程最多可减少50%。

6项来自分案申请（E136WOUSTA、E136WOCNTA、E136WODE），5项来自母案申请（E136WOUS、E136WOCN）。