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US 8,978,365 B2Granted
Exhaust gas purification system
AssigneeIsuzu Motors Limited
InventorsTakashi Ikeda, Tetsuya Murata, Kenzou Yaginuma
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AssigneeIsuzu Motors Limited
InventorsTakashi Ikeda, Tetsuya Murata, Kenzou Yaginuma
Estimating the term…
In the exhaust gas purification system, a diesel particulate defuser (“DPD”) for trapping particulate matter (“PM”) in exhaust gas is connected to an exhaust pipe of an engine to automatically regenerate the DPD by raising a temperature of the exhaust gas from the engine by carrying out post injection when an amount of PM in the DPD exceeds a predetermined amount. Further, the system includes detecting the temperature of the exhaust gas during DPD regeneration when the DPD is automatically regenerated, calculating a deviation between the detected temperature of the exhaust gas and a target temperature for the DPD regeneration, and controlling a quantity of the post injection by resetting an integral control term used in a PID control to zero when running mode automatic regeneration is shifted to idling mode automatic regeneration after a vehicle is stopped, when PID-controlling the quantity of the post injection based on the deviation.
An exhaust gas purification system in which a diesel particulate defuser for trapping particulate matter in exhaust gas is connected to an exhaust pipe of a diesel engine to automatically regenerate the diesel particulate defuser by raising a temperature of the exhaust gas from a diesel engine by carrying out post injection by injecting diesel fuel into a cylinder of the engine when an amount of the particulate matter in the diesel particulate defuser exceeds a predetermined amount, the system comprising:
Dependencies are inferred from the claim text.