When the fuel evaporation system fails, please contact dealers authorized by VOGE service store for maintenance.
Do not change the fuel evaporation system, otherwise it may cause non-compliance with the requirements of the
fuel evaporation emission regulations. After disassembly and maintenance, check that the connection of each
pipeline should be good, and the pipe joint should be free of air leakage and blockage. The rubber pipe shall be
free of extrusion, rupture, damage, etc. The fuel vapor in the fuel tank is released into the carbon tank through the
desorption pipe. When the engine stops working, the fuel vapor is absorbed by the active carbon in the carbon
tank.
When the engine is working, the fuel vapor in the carbon tank is released to the engine combustion chamber
through the desorption pipe to participate in combustion, so as to prevent the direct emission of the fuel vapor
into the atmosphere and cause environmental pollution. Meanwhile, the adsorption pipe also has the balance of
the air pressure in the fuel tank. When the air pressure in the fuel tank is lower than the atmospheric pressure, the
air pressure in the fuel tank can be supplemented by the air pipe and adsorption pipe of the carbon tank. Therefore,
the pipeline shall be smooth to prevent blockage, extrusion and other phenomena, so as to ensure the correct
installation of the anti-dump valve, otherwise, the fuel pump or fuel
tank may be damaged, deformed, cracked, or other parts damaged .
The fuel evaporation control system works as following principles:
(1)After the gasoline in the fuel tank is heated, the gasoline vapor
evaporates and is absorbed by the tank through the dump valve.
(2)When the vehicle tilts more than 60 degrees, the dump valve is
closed, and the gasoline cannot flow to the carbon tank through the
dump valve.
(3)The fresh air flows from the a end of the carbon canister to the
purge end, and the oil vapor is brought into the throttle, and then
through the air inlet pipe to the engine to participate in combustion.
Fuel evaporation
43
the adsorbed oil
the desorption oil
fresh air
fuel tank
dump
valve
carbon canister
A port
(air connector)
one-way valve
engine
inlet pipe
throttle
valve
The diagram of the fuel evaporation control system
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