Method for cold-start pre-warming of a pressure-charged internal combustion engine and/or of an exhaust gas aftertreatment device
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United States of America Patent
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Oct 31, 2017
Grant Date -
Jun 2, 2016
app pub date -
Nov 24, 2015
filing date -
Nov 28, 2014
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Abstract
A method for cold start pre-warming of a pressure-charged internal combustion engine and/or of an exhaust gas aftertreatment device of a internal combustion engine, includes arranging a cold-starting aid in the intake duct for warming the charge air while the engine is stationary. The internal combustion engine has at least one working cylinder with at least one inlet valve and at least one outlet valve and further includes a device for setting a valve position. The internal combustion engine can be pressure-charged by a pressure-charging device operable by an electric motor. In the method, after detection of a cold start of the internal combustion engine: the cold-starting aid is activated while the engine is stationary; electric-motor operation of the pressure-charging device is activated; and a valve overlap between at least one inlet valve and at least one outlet valve is set.
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