Abstract: Apparatus is disclosed for storing a liquid NOx reductant on a vehicle. The apparatus comprises a container for containing the liquid NOx reductant, a first heating device located in the container and adapted to heat the NOx reductant in use, and a tube that has a first end adapted to be submerged in the liquid NOx reductant in the container in use. The tube is adapted to extract liquid NOx reductant from the container and the tube includes a second heating device extending along at least a portion of the length of the tube that is located within the container.

Abstract: An electrically controlled hydraulic actuated fuel injector wherein the amount of return fuel flow is substantially reduced without adversely affecting injection valve operation. An improved control valve armature valve disk of faster acting construction is also included. In one embodiment, dual pressurizing passages of differing diameters provide lower total fuel flow to a control chamber than the outflow through a depressurizing passage controlled by a control valve. Upon full opening of the injection valve, all return fuel flow is supplied to the control chamber through the smaller pressurizing passage, thereby reducing the requirement for pressure fuel flow. Upon closing of the control valve, cutting off discharge through the depressurizing passage, both of the dual pressurizing passages help fill the control chamber to quickly close the injection valve.