Heavy Duty Truck Chassis Having Rear Mounted Fuel Tank

A heavy-duty truck comprising:

• a heavy-duty truck chassis comprising:
• a frame assembly having a first rail spaced from a second rail to define a gap therebetween, wherein the first and second rails each have a maximum width defining an outermost boundary thereof;
• a front axle supported by the frame assembly and positioned proximate a front portion of the frame assembly;
• and
• at least one rear axle supported by the frame assembly and positioned proximate a rear portion of the frame assembly;
• a fuel tank supported by the frame assembly and positioned in the gap between the first and second rails and behind the at least one rear axle, wherein the fuel tank is supported by the frame assembly by a support structure connected to the first and second rails, and wherein the fuel tank has an inlet and the first rail has an opening positioned proximate the inlet and passing completely through the first rail;
• and
• a supply conduit passing through the opening and extending outside the outermost boundary of the first rail, wherein the supply conduit is in communication with the inlet and is configured to deliver fuel from the fuel tank.

A heavy-duty truck comprising:

• a heavy-duty truck chassis comprising:
• a frame assembly having a first rail spaced from a second rail to define a gap therebetween, wherein the first and second rails each have inner surfaces facing the gap, a flange extending from the inner surface into the gap, and a flat outer surface facing away from the gap;
• a front axle supported by the frame assembly and positioned proximate a front portion of the frame assembly;
• and
• at least one rear axle supported by the frame assembly and positioned proximate a rear portion of the frame assembly;
• a fuel tank supported by the frame assembly and positioned in the gap and behind the at least one rear axle, wherein the fuel tank is supported by the frame assembly by a support structure connected to the first and second rails, and wherein the fuel tank has an inlet and the first rail has an opening positioned proximate the inlet and passing completely through the first rail;
• and
• a supply conduit passing through the opening and extending past the flat outer surface of the first rail, wherein the supply conduit is in communication with the inlet and is configured to deliver fuel from the fuel tank.

A heavy-duty truck comprising:

• a heavy-duty truck chassis comprising:
• a frame assembly having a first rail spaced from a second rail to define a gap therebetween;
• a front axle supported by the frame assembly and positioned proximate a front portion of the frame assembly;
• a rear axle supported by the frame assembly and positioned proximate a rear portion of the frame assembly;
• a tag axle;
• and
• a fuel tank supported by the frame assembly and positioned in the gap and behind the rear axle and between the rear axle and the tag axle, wherein the fuel tank is supported by the frame assembly by a support structure connected to the first and second rails;
• an operator cab supported by the chassis;
• and
• a heavy-duty truck body supported by the chassis, wherein the body is spaced rearwardly from the operator cab and includes components configured for a vocational operation.