AN ENGINE SYSTEM LUBRICATED BY MEANS OF A LUBRICATION OIL THAT FORMS AMMONIA-SOLUBLE ASH WHEN COMBUSTED, AND A VEHICLE COMPRISING SUCH AN ENGINE SYSTEM
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United States of America Patent
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Issued Date -
Feb 7, 2019
app pub date -
Jan 19, 2017
filing date -
Feb 11, 2016
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Abstract
An engine system comprising an internal combustion engine operated by a fuel and lubricated by a lubrication oil comprising at least one additive that renders ash formed by combustion of the lubrication oil ammonia-soluble ash; an exhaust gas system for cleaning an exhaust gas flow from the internal combustion engine , the exhaust gas system comprising a diesel particulate filter to capture particulate matter from the exhaust gases, wherein the particulate matter comprises the ammonia-soluble ash; an exhaust gas conduit to lead exhaust gases from the internal combustion engine through the exhaust gas system; and an injection device to add a solvent comprising ammonia or an ammonia-forming compound into the exhaust gas flow upstream of the diesel particulate filter, wherein the exhaust gas conduit collects the solvent and lead the solvent through the diesel particulate filter, thereby dissolving and thus removing the ammonia-soluble ash from the diesel particulate filter.
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