System and method to control an electronically-controlled turbocharger
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United States of America Patent
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Feb 17, 2015
Grant Date -
Nov 29, 2012
app pub date -
Aug 8, 2012
filing date -
Jul 27, 2009
priority date (Note) -
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Abstract
By providing an electrically-controlled turbocharger (ECT) on a compression-ignition (CI) engine, the engine can be provided a desired lambda and a desired EGR fraction over the range of operating conditions. When lambda in the exhaust is leaner than the desired lambda, electrical energy to the electric motor of the ECT is reduced to bring actual lambda to desired lambda. Analogously, when lambda in the exhaust is richer than the desired lambda, electrical energy to the ECT is increased.
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