The system of catching of steams of fuel (EVAP) accumulates fuel steams in special capacity with the activated coal — an absorber, and at engine work mixes them with fresh air and submits to engine cylinders, where they дожигаются.
|
|
Fig. 7.28. An arrangement of elements of system of catching of steams of fuel (EVAP) on models till 2001: 1 – the valve of compulsory ventilation картера; 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 – the gauge of pressure of steams of fuel; 5 – the vacuum valve of the gauge of pressure of steams of fuel; 6 – capacity with the activated coal; 7 – the vacuum valve of system of catching of steams of fuel; 8 – the oxygen gauge (the block 1 gauge 2); 9 – the vacuum valve of system of repeated burning of the fulfilled gases; 10 – the oxygen gauge (the block 1 gauge 1)
|
|
|
Fig. 7.29. An arrangement of elements of system of catching of steams of fuel (EVAP) on models since 2001: 1 – the valve of compulsory ventilation картера; 2 – the vacuum valve of system of catching of steams of fuel; 3 – the levelling tank; 4 – a service socket of system of catching of steams of fuel; 5 – the vacuum valve of the valve of closing of the canister with the activated coal (CCV); 6 – the fuel valve; 7 – a tube of the control of pressure; 8 – a ventilating tube; 9 – a cover of a jellied mouth of a fuel tank; 10 – a returnable hose; 11 – the gauge of pressure of steams of fuel; 12 – the vacuum valve operating the valve of pressure; 13 – an aperture for air giving; 14 – a clearing hose; 15 – the canister with the activated coal; 16 – a hose of the monitoring system of allocation of steams of fuel; 17 – a fuel tank
|
On models since 2001 of release the capacity with the activated coal 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 fuel are transferred from a fuel tank, throttle knot and an inlet collector to capacity with the activated coal where they gather. After start-up of the engine of pair fuel leave from capacity through regulating valve of clearing and move in cylinders of the engine for burning. The regulating valve of clearing copes the engine management block.
The cover of a jellied mouth of a fuel tank has the return valve of double action. At malfunction of system of catching of steams of fuel, and pressure increase in a fuel tank, the valve lets off steam fuel in atmosphere.
|
|
Fig. 7.30. An arrangement of the gauge of pressure of steams of fuel on models till 2001 of release
|
The system of catching of steams of fuel includes the pressure gauge (
fig. 7.30) which reacts to change of pressure of steams of fuel. On models till 2001 of release the gauge 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 block of the pump/gauge of level of fuel.
After start-up of the engine and its warming up to preliminary established temperature, the vacuum valve (VSV) opens, opening the clearing valve therefore the vacuum created in an inlet collector extends steams of fuel from capacity with the activated coal. Further fuel steams mix up with air arriving in the engine, and are burnt together with a fuel mix in engine cylinders.
The gauge of pressure of steams of the fuel, located in a fuel tank, supervises pressure of steams in a fuel tank and when pressure exceeds preliminary established threshold, the vacuum valve opens, and fuel steams leave a tank and gather in the canister with the activated coal.
Replacement of capacity with the activated coal make as follows:
– Switch off ignition and disconnect a wire of "weight" 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 the activated coal 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.