文档介绍：SURFACE REAF.
VEHICLE J1861 SEP2001
MENDED Issued 1994-08
monwealth Drive, Warrendale, PA 15096-0001
PRACTICE Reaffirmed 2001-09
Superseding J1861 AUG1994
Air Brake Valve Input-Output Characteristic Requirements
1. Scope—This SAE mended Practice establishes minimum tolerance requirements for pilot operated
and mechanically actuated modulating type valves, and through type valves used in the service brake control
system when tested in accordance with the test procedure outlined in SAE J1859. This document applies to
the nominal input-output characteristics as specified by vehicle original equipment manufacturer and labeled
by the valve manufacturer as outlined in SAE J1860. The tolerance requirements will include:
a. Crack (opening) pressure or force
b. Pressure differential (input-output)
Purpose—This document establishes uniform tolerance requirements for specified nominal input-output
characteristics of pneumatic valves designed to operate at 862 kPa (125 psi) nominal pressure mercial
air braked vehicles. This serves as a supplement to SAE J1410.
2. References
Applicable Publications—The following publications form a part of this specification to the extent specified
herein. The latest issue of SAE publications shall apply.
SAE PUBLICATIONS—Available from SAE, monwealth Drive, Warrendale, PA 15096-0001.
SAE J1410—Air Bra