Exhaust gas purification system of internal combustion engine

Details Exhaust gas purification system of internal combustion engine Exhaust gas purification system of internal combustion engine

2007-08-14

2007-08-14

Denion, Thomas (Department: 3748)

Power plants

Internal combustion engine with treatment or handling of...

By means producing a chemical reaction of a component of the...

C060S297000, C060S311000

Reexamination Certificate

active

11070368

ABSTRACT:
An electronic control unit (ECU) of an internal combustion engine calculates a present deposition quantity of exhaust particulate matters based on operating states of the engine such as a differential pressure of a diesel particulate filter (DPF). If the present deposition quantity exceeds a predetermined upper limit value, the ECU performs compulsory regeneration of the DPF to compulsorily combust and reduce the deposited exhaust particulate matters. The ECU determines that spontaneous regeneration occurs if a temperature of exhaust gas in the DPF is equal to or higher than a reference temperature. Thereafter, the ECU completes the compulsory regeneration to eliminate the deposited exhaust particulate matters if the ECU determines that the spontaneous regeneration stops and the deposition quantity becomes equal to or less than a predetermined lower limit value.

REFERENCES:
patent: 4211075 (1980-07-01), Ludecke et al.
patent: 4719751 (1988-01-01), Kume et al.
patent: 4835964 (1989-06-01), Kume et al.
patent: 4969328 (1990-11-01), Kammel
patent: 5121601 (1992-06-01), Kammel
patent: 6802180 (2004-10-01), Gabe et al.
patent: 6829889 (2004-12-01), Sait et al.
patent: 6941750 (2005-09-01), Boretto et al.
patent: 6983591 (2006-01-01), Kondo et al.
patent: 7031827 (2006-04-01), Trudell et al.
patent: 2004/0172933 (2004-09-01), Saito et al.
patent: 2005/0154523 (2005-07-01), Yahata et al.
patent: 2005/0188686 (2005-09-01), Saito et al.
patent: 7-332065 (1995-12-01), None
U.S. Appl. No. 11/228,292 filed Sep. 19, 2005.
U.S. Appl. No. 11/220,596 filed Sep. 8, 2005.

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