发明名称 |
SHUT-OFF VALVE FAULT DIAGNOSIS DEVICE |
摘要 |
Provided is a shut-off valve fault diagnosis device (6) that performs fault diagnosis of a shut-off valve (41) including a first valve body (103) that is opened in advance during power supply and a second valve body (104) that is opened due to a decrease in a differential pressure between upstream and downstream after the opening. The shut-off valve fault diagnosis device (6) includes a diagnosis processing unit (66) that estimates an open and shut state of each of the first and second valve bodies (103, 104) from a time-variable characteristic in a downstream pressure of the shut-off valve (41), and performs the fault diagnosis of the shut-off valve (41) from an actual measurement value of the downstream pressure based on the estimation result. |
申请公布号 |
EP2549091(A4) |
申请公布日期 |
2014.02.05 |
申请号 |
EP20110755944 |
申请日期 |
2011.01.05 |
申请人 |
KEIHIN CORPORATION |
发明人 |
SAITO, YOSHIO;FURUSU, TOMOYUKI |
分类号 |
F02M21/02;F02D19/02;F02D19/06 |
主分类号 |
F02M21/02 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|