Exhaust gas cleaning system having particulate filter

Power plants – Internal combustion engine with treatment or handling of... – By means producing a chemical reaction of a component of the...

Reexamination Certificate

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Details

C060S274000, C060S277000, C060S286000, C060S297000, C055SDIG030

Reexamination Certificate

active

06962046

ABSTRACT:
An electronic control unit (ECU) of an exhaust gas cleaning system for an internal combustion engine having a diesel particulate filter (DPF) determines whether collection quantity of exhaust particulate matters collected by the DPF is greater than a regeneration start value or not. The collection quantity is calculated from a pressure difference at the DPF and a flow rate of exhaust gas. If the collection quantity is determined to be greater than the regeneration start value, the ECU increases the temperature of the DPF to regenerate the DPF. The regeneration start value is set smaller as the detection accuracy of the collection quantity decreases. The regeneration start value is set smaller as the exhaust gas flow rate decreases and a rate of change in an accelerator position increases.

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patent: 7-332065 (1995-12-01), None

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