Device for supplying secondary air

Details Device for supplying secondary air Device for supplying secondary air

2007-05-29

2007-05-29

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...

C060S277000, C060S290000, C060S293000

Reexamination Certificate

active

11197507

ABSTRACT:
There is provided a device for supplying secondary air, which comprises a secondary air passage for supplying secondary air, to an exhaust passage of an engine, upstream of an exhaust purification device provided in the exhaust passage, a pump provided in the secondary air passage for supplying a secondary air, a battery used for driving the pump, at least one opening-closing device for opening and closing the secondary air passage, and a pressure sensor provided between the pump and the opening-closing device for detecting a pressure in the secondary air passage. A malfunction of at least one of the pump and the opening-closing device is detected on the basis of at least one of the pressures detected when the secondary air passage is opens and when the secondary air passage is closed. The malfunction detection is ceased when the voltage of the battery changes by a value larger than a predetermined value when the pressure sensor detects a malfunction of the pressure variation in the secondary air passage for detecting a malfunction of at least one of the pump and the opening-closing device.

REFERENCES:
patent: 5542292 (1996-08-01), Schneider et al.
patent: 5615552 (1997-04-01), Shimasaki et al.
patent: 5735121 (1998-04-01), Kato et al.
patent: 5782086 (1998-07-01), Kato et al.
patent: 6023401 (2000-02-01), Hashimoto et al.
patent: 6830043 (2004-12-01), Morinaga et al.
patent: 6918245 (2005-07-01), Hirooka et al.
patent: 6983590 (2006-01-01), Roelle et al.
patent: 1293648 (2003-03-01), None
patent: A-2000-170530 (2000-06-01), None
patent: A-2003-83048 (2003-03-01), None
patent: A-2003-214248 (2003-07-01), None

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