The catching system паров fuels (EVAP) accumulates pairs of fuel in special capacity with absorbent carbon — an absorber, and at operation of the engine mixes them with fresh air and submits to engine cylinders, where they дожигаются.
Fig. 7.28. An arrangement of elements of system of catching паров fuels (EVAP) on models till 2001: 1–valve of compulsory ventilation of a case; 2–the vacuum modulator of system of repeated burning of the fulfilled gases; 3–the valve of system of repeated burning of the fulfilled gases; 4–pressure sensor паров fuels; 5–vacuum valve of the sensor of pressure паров fuels; 6–capacity with absorbent carbon; 7–vacuum valve of system of catching паров fuels; 8–oxygen sensor (block 1 sensor 2); 9–the vacuum valve of system of repeated burning of the fulfilled gases; 10-oxygen sensor (block 1 sensor 1)
Fig. 7.29. An arrangement of elements of system of catching паров fuels (EVAP) on models since 2001: 1–valve of compulsory ventilation of a case; 2–vacuum valve of system of catching паров fuels; 3–the leveling tank; 4–service socket of system of catching паров fuels; 5–the vacuum valve of the valve of closing of the canister with absorbent carbon (CCV); 6–fuel valve; 7–tube of control of pressure; 8–ventilating tube; 9–cover of a jellied mouth of a fuel tank; 10-returnable hose; 11-pressure sensor паров fuels; 12-the vacuum valve operating the valve of pressure; 13-an opening for supply of air; 14-cleaning hose; 15-the canister with absorbent carbon; 16-hose of the monitoring system of allocation паров fuels; 17-fuel tank
On models since 2001 of release the capacity with absorbent carbon is established in a motor compartment, and on models till 2001 — under the car, behind a fuel tank
(fig. 7.28, 7.29)
At the idle engine of pair of fuel are transferred from a fuel tank, throttle knot and an inlet collector to capacity with absorbent carbon where they gather. After start-up of the engine of pair of fuel are removed from capacity via regulating valve of cleaning and move in engine cylinders for burning. The regulating valve of cleaning copes the control unit the engine.
The cover of a jellied mouth of a fuel tank has the return valve of double action. At malfunction of system of catching паров fuels, and pressure increase in a fuel tank, the valve lets off steam fuels in the atmosphere.
Fig. 7.30. An arrangement of the sensor of pressure паров fuels on models till 2001 of release
The catching system паров fuels turns on the pressure sensor
which reacts to pressure change паров fuels. On models till 2001 of release the sensor is established on a partition of a motor compartment, and on models since 2001 of release — in the top part of a fuel tank on the pump/fuel level sensor block.
After start-up of the engine and its warming up to previously established temperature, the vacuum valve (VSV) opens, opening the cleaning valve therefore the vacuum created in an inlet collector extends pairs of fuel from capacity with absorbent carbon. Further pairs of fuel mix up with the air arriving in the engine, and are burned together with a fuel mix in engine cylinders.
The pressure sensor паров the fuels, located in a fuel tank, supervises pressure паров in a fuel tank and when pressure exceeds previously an established threshold, the vacuum valve opens, and pairs of fuel leave a tank and gather in the canister with absorbent carbon.
Capacity replacement with absorbent carbon make as follows:
– switch off ignition and disconnect a "weight" wire from the storage battery;
– on models since 2001 lift a back part of the car and fix on support;
– mark and disconnect from capacity with absorbent carbon all electric sockets and hoses;
– turn out bolts and remove capacity from a motor compartment or from under the car.
Installation make in sequence, return to removal.