Method for injecting gaseous ammonia into a combustion engine exhaust line
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United States of America Patent
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Aug 23, 2022
Grant Date -
N/A
app pub date -
Feb 4, 2020
filing date -
Feb 4, 2019
priority date (Note) -
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status (Latency Note)
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Abstract
Disclosed is a device for injecting ammonia in gaseous form into an exhaust line of a combustion engine, the device including a supervisor, an evaporation chamber incorporating a heater for heating a quantity of reducing agent thus releasing ammonia in gaseous form that exits the evaporation chamber via a pipe opening into the exhaust line. The control supervisor is associated with an internal first pressure sensor housed in the evaporation chamber and with a second pressure sensor intended to be housed in the exhaust line, including a calculator calculating a quantity of ammonia to be injected into the exhaust line at a given instant as a function of the pressure values from the first and second pressure sensors.
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