Automotive diesel exhaust HC dosing valve for use with diesel particulate filter systems
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United States of America Patent
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Jan 8, 2013
Grant Date -
Jan 31, 2008
app pub date -
Jun 7, 2007
filing date -
Aug 15, 2005
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A dosing valve assembly is disclosed for administering a reducing agent into an exhaust stream from an internal combustion engine upstream of a catalytic converter and diesel particulate filter. The dosing valve assembly includes a control valve coupled to a source of reducing agent, a delivery valve constructed and arranged for coupling to the exhaust stream to enable a quantity of reducing agent to be administered into the exhaust stream, and an elongated conduit connecting the control valve and delivery valve for fluidly communicating reducing agent from the control valve to the fuel delivery valve. The disclosed arrangement enables the control valve to be displaced from the delivery valve and thus away from the high temperature environment proximal to the exhaust stream.
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