Emissions control
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 6, 2002
Grant Date -
Apr 25, 2002
app pub date -
Apr 28, 2000
filing date -
Aug 13, 1997
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A heavy duty diesel engine having an exhaust system incorporating a catalyst to convert NO to NO.sub.2 and a particulate trap on which soot particles are continuously oxidized, and a portion of the exhaust gases are recirculated through a cooler and exhaust gas flow valve before being mixed with air and fed to the engine cylinders. The system also incorporates a sensor to detect the amount of NOx in the exhaust to adjust the gas flow valve, thereby adjusting the portion of recirculated exhaust gas fed to the engine cylinders.
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