Fuel tube and fuel tube contained automobile fuel pretreatment device

A fuel tube contained automobile fuel pretreatment device, comprising:

• an instantaneous constant-temperature heating device, which comprises:
• a fuel tube which is adapted to allow fuel to flow therethrough and comprises a tube main body, a first tubular section, and a second tubular section, the tube main body defining a heating chamber, the first tubular section extending through one side of the tube main body and comprising a first fuel inlet opening located outside the tube main body and a first fuel outlet opening located within the heating chamber, the second tubular section extending through another side of the tube main body that is opposite to the first tubular section and comprising a second fuel inlet opening located within the heating chamber and a second fuel outlet opening located outside the tube main body, the tube main body, the first tubular section, and the second tubular section collectively forming a single Z-shaped path,
• a heating unit, which comprises at least two plate electrodes arranged on an outside surface of the tube main body, at least one electric thermal ceramic element interposed between the two plate electrodes, at least one insulation sheet wrapping around the two plate electrodes and the electric thermal ceramic element, and two power cables respectively supplying electrical current to the two plate electrodes, the two plate electrodes transmitting the electrical current to the electric thermal ceramic element for heating the tube main body, and
• a retention unit, which encloses and clamps an insulation assembly formed of the insulation sheet wrapping the two plate electrodes and the electric thermal ceramic element on the tube main body;
• and
• a magnetization combustion-enhancing device, which comprises at least one permanent magnet that is located adjacent to an outside surface of the tube main body to induce magnetization on the fuel flowing through the tube main body.