2.1.5.7. Fuel knot

Fig. 2.61. Fuel knot of the Mazda 6 car: 1–fuel tank; 2–return valve; 3–block of the fuel pump; 4–fuel nozzle; 5–quencher of pulsations; 6–relay of the fuel pump; 7–control socket; 8–quick-detachable connector; 9–cover of a jellied mouth of a fuel tank

The fuel knot of the car consists of the block of the fuel pump of a high pressure, a fuel tank, fuel nozzles and fuel connecting tubes (топливопроводов). From a fuel tank the fuel pump under pressure submits fuel to the fuel highway, from where it through nozzles arrives in cylinders. Nozzles dose out and spray fuel. When giving tension the needle rises by a solenoid winding, passing fuel. The amount of fuel is defined by duration of an impulse during which the nozzle is open. Further fuel flows back in a fuel tank through two metal tubes located under the bottom of the car. The fuel pump is established in a fuel tank (fig. 2.61).