Patent ID: 7527340
Filing Date: 2009-05-05
Classification: B60T

Abstract:
1. An electro-pneumatic brake system comprising a service brake controller and a main brake supply pipe, adapted to feed air to a first valve and a second valve arranged in series with said first valve, the system further comprising an electronic control means, adapted to control said first valve, independent of said service brake controller and an independent electrical supply adapted to power said electronic control means, wherein the system further comprises a pressure sensor to monitor the pressure in the first valve and supplies an electrical signal to the electronic control means, the first valve being adapted to prove a safe operating envelope for service brake mode and permit a maximum brake effort in an emergency situation said service brake controller controls the second valve in a normal situation to provide service braking and in an emergency situation the electronic control means controls the first valve independent of said service brake controller in response to a signal from a pressure sensor such that the maximum necessary brake effort is applied.