FUEL SYSTEM DETAILS


  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 Injector Assembly *2 Fuel Delivery Pipe Sub-assembly
        *3 Pressure Regulator *4 Fuel Filter
        *5 Fuel Pump *6 Charcoal Canister
        *7 Fuel Pump Assembly *8 Fuel Sender Gauge
        *9 Fuel Tank - -

  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 Fuel Pump Assembly *2 Fuel Inlet Pipe
        *3 High Density Polyethylene (HDPE) *4 Regrind Material
        *5 Adhesive *6 Ethylene Vinyl Alcohol Copolymer (EVOH)
        *7 Fuel Tank Assembly Outside *8 Fuel Tank Assembly Inside
        *9 Fuel Tank Wall Cross Section *10 Fuel Drain Mark
        *11 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 Fuel Sender Gauge *2 Charcoal Canister
        *3 Fuel Pump *4 Fuel Filter
        *5 Pressure Regulator *6 Cross Section

    3. Fuel Delivery Pipe


      1. A pressed steel fuel delivery pipe is used.

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        *1 Fuel Delivery Pipe Sub-assembly *2 Fuel Injector Assembly
        *3 A - A Cross Section - -

    4. Injector


      1. The injector is shaped to form a long nozzle. This shortens the distance from the injector to intake valve, which prevents the fuel from adhering to the intake port walls and reduces exhaust emissions.

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        *1 View from A - -