Method and system for controlling the temperature of an exhaust system having a variable length exhaust pipe
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 5, 1999
Grant Date -
N/A
app pub date -
Mar 28, 1997
filing date -
Mar 28, 1997
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A method and system for controlling the temperature of an exhaust system having a variable length exhaust pipe including a short path and a long path and an exhaust valve positioned in the exhaust pipe for regulating the flow of exhaust gas between the short path and the long path utilizes control logic for estimating a plurality of exhaust temperatures at various locations on the exhaust system. A plurality of maximum temperatures are also determined. The plurality of estimated exhaust temperatures are then compared with the plurality of maximum temperatures, and if a preselected number of the plurality of exhaust temperatures exceed the plurality of maximum temperatures, the exhaust valve is controlled so that the exhaust gas flows through the long path of the exhaust pipe so as to aid in cooling the exhaust gas.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
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