Dual-fluid dispensing system and apparatus for diesel vehicle

A dispensing unit for delivering diesel and urea to a vehicle, the dispensing unit comprising:

• a diesel spout configured to deliver diesel to the vehicle;
• a urea spout adjacent the diesel spout and configured to deliver urea to the vehicle, the urea spout having a body;
• a first surface feature disposed between the diesel spout and urea spout, the first surface feature configured to interact with a second surface feature on a fueling region of the vehicle, wherein a force provided by the second surface feature onto the first surface causes the urea spout to slide relative to the diesel spout;
• and
• a valve at least partially disposed in the urea spout and biased toward a closed position to inhibit delivery of urea while diesel is able to flow through the diesel spout, the valve having a main body slidably disposed in the urea spout and a member extending from the main body and at least partially outside of the body of the urea spout;
• wherein the force provided by the second surface feature onto the first surface feature causes the valve to slide from the closed position to an open position to enable delivery of urea simultaneously with delivery of diesel
• wherein the diesel spout, the urea spout, and the valve are positioned with respect to each other such that inserting the dispensing unit into the fueling region causes the valve to open after the diesel spout is inside the fueling region, and further insertion of the dispensing unit causes the urea spout to slide relative to the diesel spout.