Title:
DPF FAULT DETECTION METHOD AND DPF FAULT DETECTION DEVICE
Document Type and Number:
Japanese Patent JP2011185213
Kind Code:
A
Abstract:
To provide a DPF fault detection method and a DPF fault detection device capable of being materialized with a simple structure and detecting a fault at low cost.
A theoretical deposited amount in a DPF 4 is calculated from an operating state of an internal combustion engine 2. An actual deposited amount in the DPF 4 is measured with capacitance by a capacitance type PM sensor 6. If a difference between the theoretical deposited amount and the actual deposited amount exceeds an allowable limit, the DPF 4 is determined to have a fault.
Inventors:
UCHIYAMA TADASHI
FUJIE HIDEKAZU
ASO MITSUHIRO
FUJIE HIDEKAZU
ASO MITSUHIRO
Application Number:
JP2010053426A
Publication Date:
September 22, 2011
Filing Date:
March 10, 2010
Export Citation:
Assignee:
ISUZU MOTORS LTD
International Classes:
F01N3/02
Domestic Patent References:
| JP2005344619A | 2005-12-15 | |||
| JP2007262973A | 2007-10-11 | |||
| JP2002021537A | 2002-01-23 | |||
| JP2008267199A | 2008-11-06 |
Attorney, Agent or Firm:
Nobuo Kinutani
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