Exhaust aftertreatment component with directional valve
AssigneeFaurecia Emissions Control Technologies, USA, LLC
InventorsMark Robinson, Chris Chapman
Life of this patent
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Abstract
An exhaust system includes a first aftertreatment substrate configured to receive exhaust gases from an engine and a second aftertreatment substrate downstream of the first aftertreatment substrate, wherein the first aftertreatment substrate is smaller than the second aftertreatment substrate. A multi-way valve is configured to direct exhaust gas through the first aftertreatment substrate prior to entering the second aftertreatment substrate when an exhaust gas temperature is below a predetermined temperature and is configured to allow exhaust gas to bypass the first aftertreatment substrate and enter the second aftertreatment substrate when the exhaust gas temperature is above the predetermined temperature.
Claims20
An exhaust system comprising:
- a first aftertreatment substrate configured to receive exhaust gases from an engine;
- a second aftertreatment substrate downstream of the first aftertreatment substrate, wherein the first aftertreatment substrate is smaller than the second aftertreatment substrate;
- at least one electronic control unit;
- and
- a multi-way valve controlled by the electronic control unit, the multi-way valve configured to direct exhaust gas through the first aftertreatment substrate prior to entering the second aftertreatment substrate when an exhaust gas temperature is below a first predetermined temperature, and is configured to allow exhaust gas to bypass the first aftertreatment substrate and enter the second aftertreatment substrate when the exhaust gas temperature is above a second predetermined temperature, and is configured to allow exhaust gas to be directed through both the first and second aftertreatment substrates when the exhaust gas temperature is between the first and second predetermined temperatures.
An exhaust system comprising:
- a first aftertreatment component including at least one first aftertreatment substrate configured to receive exhaust gases from an engine;
- a second aftertreatment component downstream of the first aftertreatment component and including a first housing surrounding at least one upstream substrate, a second housing surrounding at least one second aftertreatment substrate, and a mixer having a mixer housing with an upstream end connected to the first housing and a downstream end connected to the second housing, and wherein the first aftertreatment substrate is smaller than the second aftertreatment substrate;
- at least one electronic control unit;
- and
- a multi-way valve controlled by the at least one electronic control unit, the multi-way valve configured to direct exhaust gas through the first aftertreatment substrate prior to entering the second aftertreatment substrate when an exhaust gas temperature is below a first predetermined temperature and is configured to allow exhaust gas to bypass the first aftertreatment substrate and enter the second aftertreatment substrate when the exhaust gas temperature is above a second predetermined temperature, and is configured to allow exhaust gas to be directed through both the first and second aftertreatment substrates when the exhaust gas temperature is between the first and second predetermined temperatures.
Dependencies are inferred from the claim text.