Brake cylinder maintaining reference
AssigneeNew York Air Brake Corporation
InventorsJason Connell, Eric C. Wright
Life of this patent
Estimating the term…
Abstract
A brake cylinder maintaining system produces a brake cylinder reference pressure based on the difference between the brake pipe pressure and the auxiliary reservoir pressure and then feeds that pressure to a choke and a volume so that the ratio of the reference area of the choke to the volume of stored brake cylinder reference pressure is substantively equal to the ratio of a brake cylinder charging valve area to the brake cylinder volume. The resulting reference pressure may be used to adjust brake cylinder pressure by providing the reference pressure to a standard quick service limiting valve or to a relay that can selectively charge or exhaust the brake cylinder.
Claims16
A system for maintaining pressure in a brake cylinder, comprising:
- a valve responsive to a source of brake pipe pressure and a source of auxiliary reserve pressure to provide a brake cylinder reference pressure based on the difference between the brake pipe pressure and the auxiliary reservoir pressure;
- a choke in communication with the valve and having a reference area for restricting the flow of the brake cylinder reference pressure;
- and
- a volume in communication with the choke for storing the restricted brake cylinder reference pressure.
Dependencies are inferred from the claim text.