Elizabeth A Conlin

US Patent:

20120199214, Aug 9, 2012

Filed:

Feb 9, 2011

Appl. No.:

13/024024

Inventors:

Josef MACK - Allenton MI, US
Raymond J. SAPIENZA - Fenton MI, US
Brian D. COTTON - Clauson MI, US
Phanu AMATYAKUL - Brighton MI, US
Paul S. SHAUB - Detroit MI, US
Elizabeth A. CONLIN - Waterford MI, US

Assignee:

GM GLOBAL TECHNOLOGY OPERATIONS LLC - DETROIT MI

International Classification:

B67C 3/16

US Classification:

137205

Abstract:

A brake modulator is disclosed herein. The brake modulator includes, but is not limited to an electronic-brake-control-modulator portion including a processor and a hydraulic portion associated with the electronic-brake-control-modulator portion. The hydraulic portion includes a primary circuit extending through the hydraulic portion to receive hydraulic brake fluid. The hydraulic portion also includes a secondary circuit extending within the hydraulic portion to receive the hydraulic brake fluid. The secondary circuit is in fluid communication with the primary circuit. The hydraulic portion further includes a valve between the primary circuit and the secondary circuit. The valve is electronically actuatable and controls movement of fluid between the primary circuit and the secondary circuit. The processor is operatively coupled to the valve and configured to perform an automatic cycling of the valve in response to an actuating event during assembly of the vehicle to evacuate the secondary circuit.