Isuzu Motors Limited

Nobuyuki Hiraki

Hitoshi Sato

Tatsuo Mashiko

Takehito Imai

Takao Onodera

Hitoshi Satou

Isao Ohara

Yoshihisa Ueda

Mamoru Komine

Makoto Takeuchi

An exhaust emission control system including a continuous regenerating diesel particulate filter ('DPF') and a DPF controller, wherein a forced regenerator is operated by a driver's request, when it is judged that a traveling distance, after starting particulate matter collection, detected by a traveling distance detector has reached a predetermined judging traveling distance, even when the DPF controller detects that a collection amount detected by a collection amount detector is smaller than a prescribed judging collection amount. Accordingly, in a continuous regenerating DPF capable of manual regenerating, the number of warnings, such as a blinking regeneration button prompting a manual regeneration, is reduced to relieve a driver of annoyance or inconvenience.

Exhaust gas purifying system

An exhaust gas control system () comprised with a continuous regeneration-type DPF (), an exhaust throttle valve () and a DPF control means (C), wherein the regeneration control is suspended, the multi injection control is performed, and the exhaust throttle valve is closed, when detecting a-stop condition of the vehicle during the regeneration control of the continuous regeneration-type diesel particulate filter device () by the regeneration means. Thereby, concerning the regeneration of the continuous regeneration-type DPF device (), the DPF can be regenerated securely by burning PM efficiently even in a traveling pattern of frequent waiting for the traffic lights to change in urban areas.

Control method for an exhaust gas purification system and an exhaust gas purification system

When a forced regeneration is restarted after interrupting the forced regeneration, and in at least any one of cases where the collecting quantity area (Rpj) detected by the collecting quantity area detection means (C) is in another collecting quantity area having a collecting quantity larger than that of the collecting quantity area (Rpi) immediately after interruption, or where the travel distance area (Rmj) detected by the travel distance area detection means (C) is in another travel distance area, having a travel distance larger than that of the travel distance area (Rmi) immediately after interruption, the forced regeneration is performed from the start, and in other case, the forced regeneration is performed for the remained period of time of the previous forced regeneration, continuing to the previous forced regeneration. Thereby, in the case of an exhaust gas purification system (), provided with a DPF device (), when the forced regeneration for the DPF device () is restarted after interruption, it is possible to sufficiently burn and remove the PM accumulated in the DPF () and moreover, efficiently regenerate the DPF ().

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Fujisawa, Japan

Nobuyuki Hiraki