Secondary air supply system and fuel injection amount...

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

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C060S276000, C060S277000, C060S285000

Reexamination Certificate

active

11020156

ABSTRACT:
A secondary air pipe is connected on the upstream side from catalyst in an exhaust pipe, and a secondary air pump is provided at an upstream portion of the secondary air pipe. An opening/closing valve for opening/closing the secondary air pipe is provided on the downstream side from the secondary air pump. A pressure sensor for detecting pressure within pipe is provided between the secondary air pump and the opening/closing valve. An ECU calculates a secondary airflow rate based upon difference pressure between both secondary air supply pressure which is detected by the pressure sensor when the opening/closing valve is opened under such a condition that the secondary air pump is operated, and also, shutoff pressure which is detected by the pressure sensor when the opening/closing valve is closed.

REFERENCES:
patent: 4123904 (1978-11-01), Nonoyama et al.
patent: 5782086 (1998-07-01), Kato et al.
patent: 5852929 (1998-12-01), Kato et al.
patent: 6023401 (2000-02-01), Hashimoto et al.
patent: 6155043 (2000-12-01), Zhang et al.
patent: 6918245 (2005-07-01), Hirooka et al.
patent: 6983590 (2006-01-01), Roelle et al.
patent: 7222483 (2007-05-01), Oi et al.
patent: 2003/0061805 (2003-04-01), Hirooka et al.
patent: 2005/0274109 (2005-12-01), Nakata et al.
patent: 2002-227639 (2002-08-01), None

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Secondary air supply system and fuel injection amount... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Secondary air supply system and fuel injection amount..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Secondary air supply system and fuel injection amount... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3902843

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.