Patent ID: 11105240

Abstract:
A dosing control system includes a shut-off valve, a reductant pump, a reductant injector, and a recirculation conduit. The shut-off valve is configured to receive reductant from a reductant tank. The reductant pump is configured to selectively receive the reductant from the shut-off valve. The reductant pump is configured to selectively be in a reductant pump command state. The reductant injector is configured to selectively receive the reductant from the reductant pump. The recirculation conduit is coupled to the reductant injector and the reductant tank. The recirculation conduit is configured to selectively provide the reductant from the reductant injector to the reductant tank. The shut-off valve is configured to prevent a flow of the reductant to the reductant pump when the reductant pump is not in the reductant pump command state.