发明名称 |
METHOD OF DIAGNOSING REGENERATION FAILURE OF EXHAUST EMISSION CONTROL DEVICE |
摘要 |
Provided is a method of diagnosing regeneration failure of an exhaust emission control device including filter regenerating means for forcibly heating a particulate filter 13 so as to burn off captured particulates. An exhaust flow rate to the particulate filter 13 and a differential pressure between entry and exit sides of the particulate filter 13 are obtained to calculate a gradient of change in the differential pressure relative to change in the exhaust flow rate. The calculated gradient is compared with a predetermined reference gradient to diagnose the particulate filter 13 as having regeneration failure when the calculated gradient exceeds the reference gradient. |
申请公布号 |
US2011232364(A1) |
申请公布日期 |
2011.09.29 |
申请号 |
US200913133305 |
申请日期 |
2009.12.09 |
申请人 |
HINO MOTORS, LTD. |
发明人 |
KOIZUMI WATARU;NARITA HIRONORI;MINAMIKAWA JINICHI |
分类号 |
G01M15/10 |
主分类号 |
G01M15/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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