Patent ID: 9689293
Date: 2017-06-27
CPC Classifications: F01N,Y02A,Y02T

Claim:
1. A reductant delivery unit for reducing nitrogen oxide (NOx) emissions from a vehicle, the reductant delivery unit comprising: a solenoid operated fluid injector having a fluid inlet and a fluid outlet, the fluid inlet being constructed and arranged to receive a reducing agent from a source of reducing agent and the fluid outlet being constructed and arranged to communicate with an exhaust gas flow path of the vehicle so that the fluid injector controls injection of the reducing agent into the exhaust gas flow path, the fluid injector having an inlet tube for directing the reducing agent between the fluid inlet and the fluid outlet, a coil heater integral with the fluid injector and constructed and arranged, when energized, to inductively heat the inlet tube to thereby heat the reducing agent within the inlet tube, a coil heater housing surrounding at least a portion of the coil heater, an overmold structure overmolding the coil heater housing, the overmold structure contacting and covering an outer surface of the coil heater housing, and an injector housing covering at least a portion of the overmold structure and constructed and arranged to be in sealing relation with the overmold structure, absent an O-ring.