Method for purification of exhaust gas from internal combustion engine
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United States of America Patent
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Apr 16, 2013
Grant Date -
Apr 30, 2009
app pub date -
Mar 23, 2007
filing date -
Mar 30, 2006
priority date (Note) -
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Abstract
Temperature range enabling combustion of high concentration hydrocarbon is enlarged, or high temperature gas is rapidly supplied to a latter part catalyst. Provided is a method for purification of exhaust gas from an internal combustion engine, by using a catalyst for increasing temperature of exhaust gas from an internal combustion engine, wherein hydrocarbon from 1,000 to 40,000 ppm by volume, as converted to methane, to the exhaust gas, is introduced at the upstream side of the catalyst for increasing temperature, along flow of the exhaust gas inside a passage of exhaust gas from the internal combustion engine.
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