Title:
STATE DETERMINATION DEVICE OF RELAY VALVE OF RAILWAY VEHICLE, STATE DETERMINATION DEVICE OF REGULAR SOLENOID VALVE OF RAILWAY VEHICLE, STATE DETERMINATION PROGRAM OF RELAY VALVE OF RAILWAY VEHICLE, STATE DETERMINATION PROGRAM OF REGULAR SOLENOID VALVE OF RAILWAY VEHICLE AND BRAKE CONTROL DEVICE OF RAILWAY VEHICLE
Document Type and Number:
Japanese Patent JP2021115928
Kind Code:
A
Abstract:
To easily determine the state of a relay valve or regular solenoid valve of a railway vehicle.SOLUTION: A determination unit of a state determination device determines the state of a regular solenoid valve on the basis of a response time h1 of a command pressure to an opening/closing command signal and a change rate α1 of a command pressure AS that changes in response to the change of the opening/closing command signal (steps S110, S120, S130, S210). Also, the determination unit determines the state of a relay valve on the basis of a response time h2 of an output pressure BS to the command pressure AS, a change rate α2 of the output pressure BS that changes in response to the change of the command pressure AS and a difference between the command pressure AS and the output pressure BS (steps S140, S150, S160, S170, S220, S230).SELECTED DRAWING: Figure 3
Inventors:
KITAHARA YUKINORI
Application Number:
JP2020009706A
Publication Date:
August 10, 2021
Filing Date:
January 24, 2020
Export Citation:
Assignee:
NABTESCO CORP
International Classes:
B60T17/22; B60T15/04; B60T15/18; F16K51/00
Attorney, Agent or Firm:
Makoto Onda
Hironobu Onda
Hironobu Onda