Exhaust heat exchanger with catalyst
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 4, 2004
Grant Date -
N/A
app pub date -
Feb 29, 2000
filing date -
Mar 4, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An exhaust heat exchanger with catalyst to be used in an exhaust system of an internal combustion engine is provided. A catalyst chamber is disposed within a water chamber which a cooling water flows through. An exhaust gas having passed through the catalyst chamber in contact with a catalyst makes an indirect heat exchange with the cooling water before it is discharged outside. The water chamber is formed surrounded by an inner trunk and an outer trunk, and the catalyst chamber is formed by a cylindrical body disposed coaxially with the inner and outer trunks and housing the catalyst. A spiral passage for the exhaust gas is formed between the inner trunk and the cylindrical body. A plurality of heat transmitting pipes are arranged within the water chamber surrounding the inner trunk circumferentially at regular intervals. The exhaust gas having passed through the catalyst flows within the spiral passage and the heat transmitting pipes in turn to make a heat exchange with the cooling water. The cylindrical body is surrounded by a heat shielding cylindrical body with a thin adiabatic gas layer lying between.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully