Portable vehicle exhaust flow sensor

Measuring and testing – Internal combustion engine or related engine system or... – Exhaust system

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

Reexamination Certificate

active

07805986

ABSTRACT:
A portable exhaust gas flow sensor includes a tube for coupling to an exhaust pipe of a vehicle and having a thin screen or similar flow restricting element to induce a pressure drop based on the exhaust gas flow with an upstream port and a downstream port relative to the flow restricting element connected to a differential pressure transducer. A thermocouple extends through a temperature port to measure exhaust gas temperature flowing through the tube. A processor in communication with the thermocouple and the differential pressure transducer determines the exhaust gas flow based on the differential pressure and the temperature. The flow restricting element includes sufficient spaces to resist formation of condensation and minimize added back pressure while providing an accurately measurable pressure drop for flows ranging from idle to full throttle.

REFERENCES:
patent: 4492079 (1985-01-01), Takagi et al.
patent: 5419178 (1995-05-01), Decker et al.
patent: 5722357 (1998-03-01), Choi
patent: 5750892 (1998-05-01), Huang et al.
patent: 5758614 (1998-06-01), Choi
patent: 5837903 (1998-11-01), Weigand
patent: 5924398 (1999-07-01), Choi
patent: 5947082 (1999-09-01), Choi et al.
patent: 6148656 (2000-11-01), Breton
patent: 6196187 (2001-03-01), Zubeck et al.
patent: 6347519 (2002-02-01), Kreso
patent: 6470732 (2002-10-01), Breton
patent: 6588210 (2003-07-01), Kreso

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

Portable vehicle exhaust flow sensor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Portable vehicle exhaust flow sensor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Portable vehicle exhaust flow sensor will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-4227331

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