Fuel pump. Elastically suspended submersible pump, installed directly in the tank. The pump is surrounded by a mesh reservoir that ensures fuel supply even if the fuel is pumped hard (for example, when turning). The pump is electrically driven; in a gasoline engine, it forms a single unit together with a sensor for the fuel gauge.
Fuel tank with parts mounted on it: 1 - fuel supply line from the fuel filter to the engine, 2 - fuel return line from the engine, 3 - air outlet pipe to the activated carbon tank, 4 - screw 23 Nm for fastening the filler neck and connection to the housing, 5 - overflow hose, 6 - rubber cap, 7 - borrowed ring, 8 - sealing ring, 9 - cover, 10 - connection to the housing for the removal of static charges. 11 - air outlet pipe, 12 - fuel tank, 13 and 15 - heat shields, 14 and 16 - nut 2 Nm, 17 - spacer clamp, 18 - clamping band, 19 - screw 23 Nm.
Fuel tank for vehicles with four-wheel drive with parts mounted on it: I - holder for the exhaust system, 2 - support plate, 3 - fuel supply line from the fuel filter to the engine, 4 - air outlet pipe to the activated carbon tank, 5 - fuel return line from the engine, 6 - nut 2 Nm, 7 - heat shield, 8 - screw 23 Nm for fastening the filler neck and connection to the body, 9 - overflow hose, 10 - rubber cap, 11 - clamping ring, 12 - sealing ring, 13 - cap, 14 - connection to the body for discharging static charges, 15 and 16 - air outlet pipe, 17 - fuel tank, 18 - tie band, 19 - expansion clamp, 20 - screw 23 Nm, 21 - heat shield, 22 - nut 2 Nm, 23 - screw 23 Nm.
Fuel filter. The fuel filter filters out liquid and solid impurities. The filter is located on the bottom of the body, in front of the fuel tank (looking in the direction of travel), it is integrated into the fuel supply line. The filter contains two filter elements on which impurities are deposited.
Fuel level sensor. The fuel level sensor consists of a float and a potentiometer. As the fuel level drops, the float moves down and moves the potentiometer in such a way that the resistance of the potentiometer increases. As a result, the voltage on the fuel level indicator decreases, and the indicator arrow deviates in the direction «empty».
The excess amount of fuel supplied and gases through the safety valve are diverted directly to the fuel tank, which allows maintaining the appropriate pressure in the system even when the ignition is off.
Tank with activated carbon. This tank is located under the front right wheel cover. Vapors, which are constantly formed in the fuel tank, through the gravity and air outlet valve enter the activated carbon tank. Activated charcoal absorbs these gases like a sponge. Depending on the load on the engine and the speed of the shaft, the control device opens the vacuum hose with the regeneration solenoid valve, which goes to the intake manifold. Fuel vapors are sucked from the activated charcoal tank and fed for combustion.
The principle of operation of the tank with activated carbon
During the so-called purge, the fuel vapor accumulated in the activated carbon is regenerated. To do this, under the action of reduced pressure in the inlet gas pipeline, fresh air is sucked in through the vent, which is located in the lower part of the tank. The accumulated fuel vapors are metered out for combustion together with fresh air.
The vent valve prevents additional fuel vapors from being sucked out of the fuel tank when the valve is open and the reduced pressure acting on the intake manifold side. First of all, this valve ensures the emptying of the activated carbon tank. If the bleed valve is left without power, for example due to a broken wire, it remains closed. In this case, the tank is not emptied.
The principle of operation of the tank with activated carbon: 1 - pipeline from the fuel tank to the activated carbon tank, 2 - activated carbon tank, 3 - fresh air, 4 - regeneration valve, 5 - pipeline to the inlet gas pipeline, 6 - throttling device with a throttle valve.
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