Abstract: A fluid injector includes a fluid inlet, a fluid outlet, and a fluid path from the fluid inlet to the fluid outlet. An actuator unit is disposed within the fluid injector. A valve assembly operatively couples to the actuator unit. A spacer member is disposed between a downstream end portion of the actuator unit and a portion of the valve assembly, the spacer member constructed from a compressible, resilient material so as to compress due to expansion forces from fluid in the fluid injector freezing, and to expand when frozen fluid in the fluid injector melts. The spacer member occupies a space in the fluid path of the fluid injector.

Abstract: A fluid injector includes a calibration filter tube including a bore defined in an axial direction through the calibration filter tube, the bore defining at least a portion of a fluid path through the fluid injector, the calibration filter tube including a plurality of holes which extend from the bore to an outer surface of the calibration filter tube. A volume reduction member has a bore though which the calibration filter tube extends, the volume reduction member occupying a space between the outer surface of the calibration filter tube and an inner surface of the tube member, the volume reduction member being constructed from resilient, compressible material. Freezing or frozen fluid disposed in the calibration filter tube expands through the holes and at least partially compresses the volume reduction member, so as to reduce fluid expansion forces damaging other components of the fluid injector.

Abstract: A fluid injector includes a fluid inlet, a fluid outlet, and a fluid path from the fluid inlet to the fluid outlet. An actuator unit is disposed within the fluid injector. A valve assembly operatively couples to the actuator unit. A spacer member is disposed between a downstream end portion of the actuator unit and a portion of the valve assembly, the spacer member constructed from a compressible, resilient material so as to compress due to expansion forces from fluid in the fluid injector freezing, and to expand when frozen fluid in the fluid injector melts. The spacer member occupies a space in the fluid path of the fluid injector.

Abstract: A fluid injector includes a calibration filter tube including a bore defined in an axial direction through the calibration filter tube, the bore defining at least a portion of a fluid path through the fluid injector, the calibration filter tube including a plurality of holes which extend from the bore to an outer surface of the calibration filter tube. A volume reduction member has a bore though which the calibration filter tube extends, the volume reduction member occupying a space between the outer surface of the calibration filter tube and an inner surface of the tube member, the volume reduction member being constructed from resilient, compressible material. Freezing or frozen fluid disposed in the calibration filter tube expands through the holes and at least partially compresses the volume reduction member, so as to reduce fluid expansion forces damaging other components of the fluid injector.

Abstract: A fluid injector for injecting fluid includes a body with a fluid passageway extending from an inlet to an outlet of the fluid injector; a valve seat; a valve element that is selectively engages with the valve seat; and a disc member disposed in the fluid passageway downstream of the valve seat. The disc member includes a plurality of channels defined along a first surface of the disc member, and a plurality of orifices defined through the disc, with each disc member being fluidly coupled to a plurality of channels. The channels fluidly coupled to each channel are in offset relation to each other at the orifice such that fluid flowing through the orifice forms a swirl pattern when exiting the orifice.

Abstract: A fluid injector for injecting fluid includes a body with a fluid passageway extending from an inlet to an outlet of the fluid injector; a valve seat; a valve element that is selectively engages with the valve seat; and a disc member disposed in the fluid passageway downstream of the valve seat. The disc member includes a plurality of channels defined along a first surface of the disc member, and a plurality of orifices defined through the disc, with each disc member being fluidly coupled to a plurality of channels. The channels fluidly coupled to each channel are in offset relation to each other at the orifice such that fluid flowing through the orifice forms a swirl pattern when exiting the orifice.

Abstract: A liquid cooled reduction unit includes a diesel exhaust fluid (DEF) injection valve. The valve includes an end portion extending to a distal end. The valve is configured to receive a DEF and force the DEF to exit at the distal end such that the DEF is then directed and applied to an exhaust stream of a vehicle engine. A coolant jacket is selectively filled with a coolant and has an outer side and an inner side. The inner side of the jacket faces a length of the end portion and is separated from the length of the end portion by an air gap.

Abstract: A liquid cooled reduction unit includes a diesel exhaust fluid (DEF) injection valve. The valve includes a housing that forms an elongated chamber therein. The valve configured to receive a DEF and force the DEF through the chamber to exit the chamber and the DEF is then being directed and applied to an exhaust stream of a vehicle engine. A coolant jacket is selectively filled with a coolant and has an outer side and an inner side. The inner side of the jacket faces a length of the valve body and is separated from the length of the valve body by an air gap.