Vehicle-mounted fluid tanks and methods of manufacturing the same

A method for manufacturing a vehicle-mounted tank with an inner volume for transporting a liquid, comprising:

• cutting a tank base and a tank cover from sheet metal;
• bending a first side section and a second side section of the tank base, disposed on a first side of the tank base, substantially ninety degrees about a first bend axis of the tank base;
• bending a third side section and a fourth side section of the tank base, disposed on a second side of the tank base opposite of the first side of the tank base, substantially ninety degrees about a second bend axis of the tank base substantially parallel with the first bend axis;
• bending an inner section of the tank base along a third bend axis substantially perpendicular with the first bend axis and the second bend axis to form a tank back section and a tank bottom section from the inner section, wherein the bending along the third bend axis further causes:
• an inner edge of the first side section to contact or nearly-contact an inner edge of the second side section to form a first tank side wall,
• an inner edge of the third side section to contact or nearly-contact an inner edge of the fourth side section to form a second tank side wall, and
• the tank base to have a generally L-shaped cross-section;
• bending the tank cover along a fourth bend axis, a fifth bend axis, and a sixth bend axis of the tank cover, each bend axis of the tank cover substantially parallel with the third bend axis, to form a top wall, a front wall, and a first middle wall and a second middle wall, wherein:
• the first middle wall and the second middle wall generally form an L-shape,
• the top wall extends perpendicularly from the first middle wall, and
• the front wall extends perpendicularly from the second middle wall;
• and
• welding the inner edge of the first side section with the inner edge of the second side section;
• welding the inner edge of the third side section with the inner edge of the fourth side section;
• and
• welding outer edges of the tank base with a bottom surface of the tank cover to form the tank with the inner volume.