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US 2017/0218810 A1Published application
Emissions Control Substrate
AssigneeDENSO International America, Inc.
InventorEdward SZCZEPANSKI
Life of this patent
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Abstract
Emissions control assemblies including substrates defining a plurality of channels that are configured to receive engine exhaust passing through the substrates, and heating elements configured to heat the substrates.
Claims20
An emissions control assembly comprising:
- a substrate defining a plurality of channels that are configured to receive engine exhaust passing through the substrate;
- and
- a heating element configured to heat the substrate.
An emissions control assembly comprising:
- a substrate defining a plurality of channels that are configured to receive engine exhaust passing through the substrate;
- and
- a thermal energy distributor at an exterior surface of the substrate that is configured to distribute heat across the exterior surface, the thermal energy distributor has a first thermal transfer coefficient that is greater than a second thermal transfer coefficient of the substrate.
A method for heating a substrate of an emissions control assembly comprising:
- measuring pressure of exhaust present in an exhaust system, at least one of proximate to and distal to an emissions control substrate of the exhaust system when the substrate is a particulate matter filter;
- measuring temperature of exhaust within the exhaust system and temperature of the substrate when the substrate is a catalytic converter;
- when the substrate is the particulate matter filter, activating a heating element configured to heat the substrate when the measured pressure is greater than a predetermined pressure;
- and
- when the substrate is the catalytic converter, activating the heating element when the measured temperature is less than a lightoff temperature of a catalyst of the catalytic converter.
2 more elements
Dependencies are inferred from the claim text.