Control of combustion mixtures and variability thereof with engine load
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United States of America Patent
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Nov 3, 2015
Grant Date -
Mar 5, 2015
app pub date -
Nov 10, 2014
filing date -
Oct 8, 2010
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Abstract
An internal combustion engine can be operated in response to a received first throttle control input in a first operating regime that includes delivering a first air-fuel mixture having a first air/fuel ratio to a combustion volume to deliver a first output power in a first output power range between zero and a transition output power level. The engine can be operated in response to a received second throttle control input in a second operating regime that includes delivering a second air/fuel ratio richer than the first air/fuel ratio to the combustion volume to deliver a second output power in a second output power range between the transition output power level and a maximum output power level. The first throttle control input can include activation of a throttle control device against a first control resistance provided by the throttle control device, and the second throttle control input can include activation of the throttle control device against a second control resistance provided by the throttle control device and that is greater than the first control resistance. Related methods, systems, and article of manufacture are described.
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