Patent ID: 8398133
Filing Date: 2013-03-19
Classification: B60R

Abstract:
1. A crash sensing system for a vehicle having a first frame member with a contoured surface and having a second hollow frame member attached to the first frame member, comprising: a bumper cap having a first end surface shaped to nest into the contoured surface of the first frame member; an elongated chamber having an outer wall, at least a portion of which is sized to be received in the second hollow frame member, wherein the outer wall has an end opening at a first end for receiving a second end of the bumper cap, and wherein the bumper cap substantially seals the end opening; a reaction cap substantially closing a second end of the outer wall of the chamber, wherein the reaction cap or the elongated chamber include a stop surface for abutting a reaction surface that is stationary with respect to the second hollow frame member; and a fluid sensor for detecting a change in the fluid in the chamber caused by crushing of the outer wall in response to a crash force received by the frame members and transmitted through the bumper cap, wherein the outer wall has a side opening for receiving the pressure sensor.