Patent ID: 8959903
Filing Date: 2015-02-24
Classification: F01N,F01P,Y02A,Y02T

Abstract:
1. A system, comprising: a reductant storage tank configured to store a reductant for treatment of an exhaust gas produced by an internal combustion engine; a doser configured to receive reductant from the storage tank and deliver a quantity of reductant for injection into the exhaust gas; a heat exchange circuit defining a flow path for a heat exchange fluid so that the heat exchange fluid flows from a pump to the doser, through the doser for thermal contact with reductant in the doser, from the doser to the storage tank, through the storage tank for thermal contact with reductant in the storage tank, from the storage tank to the doser, through the doser, and to the pump; and a control valve in the return loop of the heat exchange circuit operable to regulate a flow of the heat exchange fluid in the flow path.