Fuel system protection in a multi-fuel system internal combustion engine
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United States of America Patent
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Mar 6, 2018
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app pub date -
Dec 14, 2014
filing date -
Jun 14, 2012
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Abstract
A technique for fuel system protection for an internal combustion engine includes introducing a directly injected fuel into a combustion chamber through a direct fuel injector, introducing a fumigated fuel upstream of an intake valve, selectively operating the internal combustion engine with at least one of the directly injected fuel and the fumigated fuel, determining a temperature of the direct fuel injector as a first function of engine operating parameters, and performing a temperature mitigation technique when the temperature rises above a first predetermined value such that the temperature is maintained below a second predetermined value.
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