Exhaust system for an engine

Details Exhaust system for an engine Exhaust system for an engine

2005-12-19

2008-11-11

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...

C060S289000, C060S297000, C060S300000, C060S312000

Reexamination Certificate

active

07448204

ABSTRACT:
A four-cycle engine is provided that includes an exhaust port for releasing combusted gas from the engine and an exhaust system. The exhaust system includes an exhaust pipe coupled with the exhaust port, a first catalyst, a second catalyst, and a secondary air introduction pipe. The first catalyst is disposed in the exhaust pipe and the second catalyst is disposed in the exhaust pipe a set distance downstream of the first catalyst. The secondary air introduction pipe is configured to introduce air into the exhaust pipe. The secondary air induction pipe is connected to the exhaust pipe between the first and the second catalysts at a location where a temperature difference of the first and the second catalysts in a cold start transient phase is within a predetermined range.

REFERENCES:
patent: 3041149 (1962-06-01), Houdry
patent: 3220805 (1965-11-01), Fowler et al.
patent: 3402550 (1968-09-01), Behrens
patent: 4125997 (1978-11-01), Abthoff et al.
patent: 4653270 (1987-03-01), Takii
patent: 4658795 (1987-04-01), Kawashima et al.
patent: 4766866 (1988-08-01), Takii et al.
patent: 4809647 (1989-03-01), Masumoto et al.
patent: 5048471 (1991-09-01), Takii et al.
patent: 5285639 (1994-02-01), Araki et al.
patent: 5365908 (1994-11-01), Takii et al.
patent: 5443547 (1995-08-01), Morikawa
patent: 5746049 (1998-05-01), Cullen et al.
patent: 5746173 (1998-05-01), Takii et al.
patent: 5804147 (1998-09-01), Blanchet et al.
patent: 5814283 (1998-09-01), Matuoka et al.
patent: 5822976 (1998-10-01), Cockerill
patent: 5961294 (1999-10-01), Hataura et al.
patent: 6000217 (1999-12-01), Hochmuth
patent: 6250281 (2001-06-01), Takii et al.
patent: 6523342 (2003-02-01), Kuper et al.
patent: 2001/0010804 (2001-08-01), Majima
patent: 53-59014 (1978-05-01), None
patent: 09-133016 (1997-05-01), None
patent: 2001-173437 (2001-06-01), None
International Search Report regarding International Application No. PCT/JP2004/007924, mailed Oct. 5, 2004.

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