The system uses a method of vapor absorption by a carbon adsorber. It is installed in the rear part of the body base and is connected by pipelines to the fuel tank and the electromagnetic purge valve.
The electromagnetic valve for purging the adsorber, which switches the operating modes of the system based on signals from the engine control unit, is located in the engine compartment.
Fuel vapors from the fuel tank are constantly removed through the pipeline and accumulate in the adsorber filled with activated carbon (adsorbent). When the engine is running, the adsorbent is regenerated (restored) by purging the adsorber with fresh air entering the system under the action of vacuum transmitted through the pipeline from the inlet pipe to the adsorber cavity when the valve opens. The electronic engine control unit regulates the intensity of the adsorber purge depending on the engine operating mode, sending a signal with a variable pulse frequency to the valve.
Fuel vapors from the adsorber enter the engine intake pipe through a pipeline and burn in the cylinders.
Malfunctions of the fuel vapor recovery system lead to unstable idle speed up to engine stalling, increased toxicity of exhaust gases and deterioration of the vehicle's driving performance.
[The original can be found on the specified resource FORDBOOK.ru]