Control of exhaust temperature in lean burn engines
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Nov 13, 2001
Grant Date -
N/A
app pub date -
Feb 23, 2000
filing date -
Feb 23, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method (100) and system for actively controlling the temperature of engine (10) exhaust gas entering an aftertreatment device and thereby controlling undesirable emissions. Through control of the turbine blade position of a variable geometry turbocharger (16), the temperature of the exhaust gas entering the aftertreatment device is maintained within the operating temperature window for the device, and at the same time, achieves the fuel economy benefits associated with turbocharging.
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