Method for operating a dosing valve, and corresponding internal combustion engine
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United States of America Patent
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Jan 5, 2016
Grant Date -
Aug 13, 2015
app pub date -
Apr 26, 2013
filing date -
Jun 16, 2012
priority date (Note) -
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Abstract
The present invention relates to a method for operating an internal combustion engine. The internal combustion engine comprises a charge-air cooler for cooling charge air and comprises a dosing valve. The charge air comprises exhaust gases which are conducted to the charge air cooler, with an adjustable exhaust-gas recirculation rate, from an exhaust tract of the internal combustion engine. In the method, a dosing valve temperature of the dosing valve is determined, and a charge-air temperature of the charge air is detected. Coolant is supplied to the dosing valve and to the charge-air cooler by means of a common adjustable coolant pump as a function of the dosing valve temperature. Furthermore, an exhaust-gas recirculation rate is adjusted as a function of the charge-air temperature and the dosing valve temperature.
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