Transient Event Fuel Apportionment for Multi Fuel Engine System
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United States of America Patent
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Issued Date -
Dec 18, 2014
app pub date -
Jun 17, 2013
filing date -
Jun 17, 2013
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Abstract
A method for controlling fuel flow in a multi fuel engine during transient events is disclosed. A specified fuel substitution ratio may be used for apportioning multiple fuels available for providing power to the multi fuel engine to provide input power for operating the engine at a desired engine speed. When a transient event occurs, such as a significant change in the desired engine speed or the load on the engine, a transient event fuel substitution ratio may used instead of the specified fuel substitution ratio to achieve a desired engine response to the event. The transient event may be detected based on, for example, the change in input power or engine speed caused by the event. The transient event fuel substitution ratio may be specified, or may be calculated based on a knock limit air fuel ratio or other factors.
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