When an engine cooling water temperature (Tw) detected by a cooling water temperature detection means (37C) exceeds a predetermined judgment water temperatures (Tw1 and Tw2) during the forced regeneration control of a filter using exhaust gas temperature r...

In an exhaust gas purification system (1) provided with a continuous regeneration type DPF device (13) and DPF control means (30C), when a collecting quantity (Pm) of PM exceeds the predetermined judgment collecting quantity (Pm0), a number-of-regeneration...

An exhaust gas purification system (1) comprising a continuous regeneration-type DPF (13) and a DPF control means (30C) is composed to perform an exhaust gas temperature raising control by multi-injection in the case where the collecting quantity (”Pm) e...

The present invention concerns a exhaust gas purification system (1), provided with a continuous regeneration-type DPF device (13) having a filter (13b) for collecting PM in exhaust gas (G), provided in an exhaust gas passage (12) of an internal combustion...

An exhaust purification device, including a NOx storing catalyst comprised of a precious metal catalyst and NOx absorbent, arranged in an engine exhaust passage, which increases the ratio of the nitrogen dioxide to the nitrogen monoxide produced when burni...

An exhaust purification device incinerates particulates, collected by the DPF, always in an appropriate combustion state, thereby surely regenerating a DPF without melting down the DPF. An ECU of the device estimates the amount of the particulates collecte...