Pre-loaded elastomeric accumulator for hydraulic system

A hydraulic accumulator for a vehicle anti-lock brake system comprising:

• a housing defining a blind bore cavity having a side wall and an end wall;
• a fluid passageway extending from one of said walls adapted for interconnection with a hydraulic circuit;
• a relatively rigid porous member nestingly disposed within said cavity and defining a contoured inner surface;
• a substantially solid elastomeric member nestingly disposed with said porous member and cooperating therewith to substantially fill the entire volume defined by said cavity;
• and
• a closure member cooperating with said housing to substantially close said cavity and compressively pre-load said elastomeric member.

A vehicle anti-lock brake control module comprising:

• a hydraulic circuit adapted for fluid interconnection with a master cylinder and with at least one wheel brake;
• pump means operable to pressurize hydraulic fluid within said circuit;
• valve means responsive to parametric inputs to fluidically configure said circuit to effect anti-lock control of a host vehicle;
• and
• a hydraulic accumulator including,
• a housing defining a blind bore cavity having a side wall and an end wall,
• a fluid passageway extending from one of said walls adapted for interconnection with said hydraulic circuit,
• a relatively rigid porous member nestingly disposed within said cavity and defining a contoured inner surface,
• a substantially solid elastomeric member nestingly disposed with said porous member and cooperating therewith to substantially fill the entire volume defined by said cavity, and
• a closure member cooperating with said housing to substantially close said cavity and compressively pre-load said elastomeric member.