FUEL SYSTEM


  1. FUNCTION


    1. Fuel Returnless System


      1. This system is used to reduce the evaporative emission. As shown below, by integrating the fuel filter, pressure regulator, charcoal canister, and fuel sender gauge with fuel pump assembly, it is possible to discontinue the return of fuel from the engine area and prevent temperature rise inside the fuel tank.

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        *1 Fuel Delivery Pipe *2 Fuel Injector
        *3 Fuel Filter *4 Pressure Regulator
        *5 Fuel Pump *6 Charcoal Canister
        *7 Fuel Tank *8 Fuel Pump Assembly
        *9 Fuel Pulsation Damper - -

  2. CONSTRUCTION


    1. Fuel Tank Assembly


      1. A multiplex layered plastic fuel tank is used. This fuel tank consists of 6 layers of 4 types of materials.

      2. A fuel drain mark has been provided at the lowest position of the fuel tank. When dismantling (scrapping) the vehicle, drain fuel by drilling a hole at the drain mark.

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        *1 High Density Polyethylene (HDPE) *2 Regrind Material
        *3 Adhesive *4 Ethylene Vinyl Alcohol Copolymer (EVOH)
        *5 Fuel Tank Assembly Outside *6 Fuel Tank Assembly Inside
        *7 Fuel Tank Wall Cross Section *8 Fuel Drain Mark
        *9 View from Bottom Side - -

    2. Fuel Pump


      1. A compact fuel pump, fuel filter, pressure regulator, fuel sender gauge and charcoal canister are integrated into the fuel pump assembly.

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        *1 Pressure Regulator *2 Charcoal Canister
        *3 Fuel Sender Gauge *4 Fuel Filter
        *5 Fuel Pump - -

    3. Fuel Delivery Pipe


      1. A pressed steel fuel delivery pipe is used.

      2. Fuel pulsation damper is placed center of the fuel delivery pipe.

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        *1 Fuel Delivery Pipe *2 Fuel Injector
        *3 Fuel Delivery Spacer *4 Fuel Pulsation Damper

    4. Injector


      1. 12-holes type fuel injector is used. It's possible to atomize fuel, which prevents the fuel from adhering to the intake port walls and reduces exhaust emissions.

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        *1 Injector Vibration Insulator *2 Fuel Injector
        *3 Fuel Injector O-ring *4 Filter
        *5 View from A - -