Compression ignition engines and methods for operating the same under cold start fast idle conditions
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United States of America Patent
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Jul 19, 2022
Grant Date -
May 13, 2021
app pub date -
Nov 7, 2019
filing date -
Nov 7, 2019
priority date (Note) -
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Abstract
A method for operating an internal combustion engine includes moving a piston downward from a top dead center position to a bottom dead center position expanding a combustion chamber in an intake stroke, dispensing a first portion of fuel into the combustion chamber, subsequent to moving the piston downward in the intake stroke, moving the piston upward in the vertical direction compressing the combustion chamber in a compression stroke, subsequent to moving the piston upward in the compression stroke, moving the piston downward in the vertical direction in an expansion stroke, while moving the piston downward in the vertical direction in the expansion stroke, dispensing a second portion of fuel into the combustion chamber, and while moving the piston downward in the expansion stroke, igniting at least a part of the first portion of fuel and the second portion of fuel.
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