Reductant injector temperature model based on coil resistance
AssigneeFca US LLC
InventorsBryan D. Axe, Louai A. Faied
Life of this patent
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Abstract
A method includes receiving, at a controller having one or more processors, one or more measured parameters, each measured parameter related to a temperature that affects a temperature of a reductant injector of an exhaust system of an engine. The method includes determining a resistance of a coil of the reductant injector. The method includes estimating the temperature of the reductant injector based on (i) the one or more measured parameters and (ii) the coil resistance. The method also includes controlling a duty cycle of the reductant injector based on the estimated temperature of the reductant injector.
Claims16
A method, comprising:
- receiving, at a controller of an engine, the controller having one or more processors, one or more measured parameters, each measured parameter related to a temperature that affects a temperature of a reductant injector of an exhaust system of the engine;
- determining, at the controller, a resistance of a coil of the reductant injector;
- estimating, at the controller, the temperature of the reductant injector based on (i) the one or more measured parameters and (ii) the coil resistance;
- and
- controlling, by the controller, a duty cycle of the reductant injector based on the estimated temperature of the reductant injector.
Dependencies are inferred from the claim text.