Integrated load bank and exhaust heater system with load shed capability for a diesel genset exhaust aftertreatment system
AssigneeCummins Cal Pacific, LLC
InventorsHerman Van Niekerk, Eric G. Wiemers, Mark Yragui
Life of this patent
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Abstract
An integrated load bank and exhaust heater for a diesel genset exhaust aftertreatment system of the type having a diesel particulate filter (DPF) and a selective catalytic reduction (SCR) section. The load bank/heater can function as a load bank when testing the genset, as a heat source to optimize SCR efficiency, as to thermally regenerate the DPF filter.
Claims15
A method for operating a control system to control the distribution of power from a genset having an output power capacity to an electrical load powered by the genset and to a load bank/heater in an exhaust after treatment (AT) system coupled to the genset, the method including:
- applying power from the genset to the electrical load;
- applying power from the genset to the load bank/heater to heat exhaust from the genset;
- monitoring power demand on the genset while applying power to the electrical load and the load bank/heater;
- and
- reducing the amount of power applied to the load bank/heater when the monitored power demand on the genset is greater than a selected output power capacity or the genset output power capacity.
An exhaust after treatment system for use with a genset having an output power capacity coupled to an electrical load, including:
- a load bank/heater configured to be powered by the genset and to heat exhaust from the genset;
- a power sensor to monitor power demand on the genset;
- and
- a control system coupled to the load bank/heater and the power sensor, to control the amount of power applied to the load bank/heater and to reduce the amount of power applied to the load bank/heater when the monitored power demand on the genset is greater than the genset output power capacity or exceeds a selected limit.
Dependencies are inferred from the claim text.