| 摘要 |
<p>Provided is a DPF system that is more convenient than a conventional DPF system. The DPF system includes: a DPF 25 constituted by a CSF 29 that is connected to an exhaust pipe 20 of a diesel engine 10 in order to collect PM in exhaust gas, and a DOC 28 provided on an upstream side of the CSF 29; and temperature sensors 30a, 30b provided respectively on an upstream side and a downstream side of the DOC 28. When a PM accumulation amount in the CSF 29 exceeds a fixed amount, DPF regeneration is performed by setting a temperature detected by the upstream side temperature sensor 30a at or above a first threshold and setting a temperature detected by the downstream side temperature sensor 30b at or above a second threshold. When a breakdown is detected in the upstream side temperature sensor 30a, the second threshold is modified upward.</p> |
