Inferred engine local temperature estimator
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United States of America Patent
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Aug 25, 2015
Grant Date -
Sep 25, 2014
app pub date -
Mar 22, 2013
filing date -
Mar 22, 2013
priority date (Note) -
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Abstract
A system and methods for inferring a local engine temperature based on various engine conditions input to a dynamic model are disclosed. In the example system provided, an inferential temperature sensor uses a trainable model to estimate a local metal temperature in an exhaust valve bridge of a cylinder head which thereby allows closed loop control of a coolant flow device independent from engine speed, engine state, coolant flow state or system temperature. In response to estimated local metal temperatures, the methods described further allow thermal management of the engine system to be optimized.
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