Title:
ELECTRONICALLY CONTROLLED PNEUMATIC (ECP) OVERLAY CONTROL VALVE
Document Type and Number:
WIPO Patent Application WO/2018/056971
Kind Code:
A8
Abstract:
An electronically controlled pneumatic (ECP) overlay control valve (10) can selective switch between a conventional pneumatic mode and an ECP mode. In ECP mode, the overlay control valve (10) shunts the brake cylinder pressure of the pneumatic control valve (12) which allows a relay valve (50) to build or exhaust pressure in the brake cylinder in response to an electronically controlled apply/release circuit. In conventional pneumatic mode, the overlay control valve disconnects the relay valve and allows a conventional pneumatic control valve to control the pressurization and exhausting of the brake cylinder.
Inventors:
PARNAPY KEITH (US)
CALL DERICK (US)
CALL DERICK (US)
Application Number:
PCT/US2016/052976
Publication Date:
March 21, 2019
Filing Date:
September 22, 2016
Export Citation:
Assignee:
NEW YORK AIR BRAKE LLC (US)
International Classes:
B60T17/22; B60T13/68; B60T15/02; B60T15/18; B60T15/24
Attorney, Agent or Firm:
NOCILLY, David, L. et al. (US)
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