FUEL SYSTEM


  1. FUNCTION


    1. Fuel Returnless System


      1. This system is used to reduce evaporative emissions. As shown below, by integrating the fuel filter, fuel pressure regulator assembly, fuel sender gauge assembly and fuel pump, it is possible to discontinue the return of fuel from the engine area, thus preventing temperature rise inside the fuel tank assembly. This reduces the generation of evaporative emissions in the fuel tank assembly.

        A01UX41E03
        Text in Illustration
        *1 Fuel Injector Assembly *2 Fuel Delivery Pipe
        *3 Fuel Pressure Regulator Assembly *4 Fuel Filter
        *5 Fuel Pump *6 Charcoal Canister
        *7 Fuel Suction with Pump and Gauge Tube Assembly *8 Fuel Sender Gauge Assembly
        *9 Fuel Tank Assembly - -

  2. CONSTRUCTION


    1. Fuel Tank Assembly


      1. A multiple layer plastic fuel tank assembly is used. This fuel tank assembly 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 assembly. When dismantling (scrapping) the vehicle, drain fuel by drilling a hole at the drain mark.

        A01UWTWE02
        Text in Illustration
        *1 Fuel Suction with Pump and Gauge Tube Assembly *2 Fuel Inlet Pipe
        *3 High Density Polyethylene (HDPE) *4 Regrind Material
        *5 Adhesive *6 Ethylene Vinyl Alcohol Copolymer (EVOH)
        *7 Fuel Drain Mark - -
        *a Fuel Tank Wall Cross Section *b View from Bottom Side
        A01UWXO Exterior of Fuel Tank Assembly A01UX3T Interior of Fuel Tank Assembly

    2. Fuel Suction with Pump and Gauge Tube Assembly


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

        A01UWSOE02
        Text in Illustration
        *1 Fuel Sender Gauge Assembly *2 Charcoal Canister
        *3 Fuel Pump *4 Fuel Filter
        *5 Fuel Pressure Regulator Assembly - -
        *a Cross Section - -

    3. Fuel Delivery Pipe


      1. A pressed steel fuel delivery pipe is used.

      2. Pulsation that occurs when the fuel is fed is absorbed by the volume change caused by bending in the fuel delivery pipe. Therefore, the separately provided pulsation damper has been discontinued, reducing the size and weight.

        A01UX5HE02
        Text in Illustration
        *1 Fuel Delivery Pipe *2 Fuel Injector Assembly
        *3 Fuel Delivery Spacer - -

    4. Fuel Injector Assembly


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

        A01UXARE06
        Text in Illustration
        *1 Injector Vibration Insulator *2 Fuel Injector Assembly
        *3 Fuel Injector O-ring *4 Filter
        *a View from A - -