Thermal storage device for use in a fluid flow system
AssigneeWatlow Electric Manufacturing Company
InventorsMark D. Everly, Magdi Khair
Life of this patent
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Abstract
An exhaust system is provided that includes at least one exhaust aftertreatment unit provided in an exhaust fluid flow pathway and a thermal storage device disposed upstream from the exhaust aftertreatment unit. The thermal storage device is operable to store thermal mass and provide thermal insulation to enable a catalyst to maintain a minimum predetermined temperature for a minimum predetermined time. In one form, a heater is also provided proximate the thermal storage device, along with variations that include a secondary flow pathway for the thermal storage device.
Claims20
An exhaust system comprising:
- at least one exhaust aftertreatment unit provided in an exhaust fluid flow pathway;
- and
- a thermal storage device disposed upstream from the at least one exhaust aftertreatment unit, wherein the thermal storage device is operable to store thermal mass and provide thermal insulation to enable a catalyst to maintain a minimum predetermined temperature for a minimum predetermined time.
An exhaust system comprising:
- at least one exhaust aftertreatment unit provided in an exhaust fluid flow pathway;
- a thermal storage device disposed upstream from the at least one exhaust aftertreatment unit, wherein the thermal storage device is operable to store thermal mass and provide thermal insulation to enable a catalyst to maintain a minimum predetermined temperature for a minimum predetermined time;
- and
- a heater disposed proximate the thermal storage device.
Dependencies are inferred from the claim text.