Single piston dual chamber fuel pump

A fuel pump for an automotive vehicle comprising:

• a housing having a first end, a second end, and an opening extending through said housing between said first and second ends;
• a piston having a first end and a second end slidably supported within said opening;
• a first end cap mounted to said first end of said housing and a second end cap mounted to said second end of said housing, thereby encasing said piston within said opening;
• a first pumping chamber defined by said opening, said first end of said piston, and said first end cap, and a second pumping chamber defined by said opening, said second end of said piston, and said second end cap, each of said first and second pumping chambers having an inlet adapted to allow fuel to flow into said pumping chambers and an outlet adapted to allow fuel to flow out of said pumping chambers;
• a drive device adapted to move said piston back and forth within said opening wherein as said piston moves toward said first end, the volume of said first pumping chamber is reduced and the volume of said second pumping chamber is increased, and as said piston moves toward said second end, the volume of said first pumping chamber is increased and the volume of said second pumping chamber is reduced.