Fuel pre-heater for liquid fueled engine

A mobile unit heater liquid fuel preheating arrangement, comprising:

• a fuel tank;
• a heater element;
• an exhaust gas pipe having a heater end connected to the heater element and having a discharge end spaced a distance from the heater element for carrying exhaust gases generated in the heater away from the heater to the discharge and for discharging exhaust gases to atmosphere;
• a fuel flow canal, said exhaust gas pipe having a heat exchange section connected between the heater and the discharge end, said flow canal having at least one turn around the exhaust gas pipe, surrounding the heat exchange section of said flow exhaust pipe;
• a first fuel line connected to said fuel tank and connected to said fuel flow canal;
• a second fuel line connected to said fuel flow canal and connected to said heater;
• a fuel pump connected to the heater in communication with said second fuel line and, a return fuel line connected to said heater and connected to said fuel tank for returning preheated fuel, not needed for combustion, to the fuel tank, said exhaust gas pipe heat exchange section including a sleeve arranged on the exhaust gas pipe, said fuel flow canal including a plurality of adjacent windings positioned on said sleeve, said sleeve being formed of a single layer winding of a heat conductive tubular element.

A mobile unit heater liquid fuel preheating arrangement, comprising:

• a fuel tank;
• a heater element;
• an exhaust gas pipe having a heater end connected to the heater element and having a discharge end spaced a distance from the heater element for carrying exhaust gases generated in the heater away from the heater to the discharge and for discharging exhaust gases to atmosphere;
• a fuel flow canal, said exhaust gas pipe having a heat exchange section connected between the heater and the discharge end, said flow canal having at least one turn around the exhaust gas pipe, surrounding the heat exchange section of said flow exhaust pipe;
• a first fuel line connected to said fuel tank and connected to said fuel flow canal;
• a second fuel line connected to said fuel flow canal and connected to said heater;
• a fuel pump connected to the heater in communication with said second fuel line and, a return fuel line connected to said heater and connected to said fuel tank for returning preheated fuel, not needed for combustion, to the fuel tank said exhaust gas pipe heat exchange section including a sleeve arranged on the exhaust gas pipe, said fuel flow canal including a plurality of adjacent windings positioned on said sleeve the sleeve of the heat exchange section and the windings of the fuel flow canal are maintained in engagement with the exhaust gas pipe by a clamping element.