Page 271 - Mechanic Diesel - TT

MECHANIC DIESEL - CITS

In this, the fuel emitted from the fuel tank is not emitted into the environment but is collected in the system itself.

In this, the charcoal container is fitted with the fuel tank. The charcoal container is connected to the combustion
chamber of the engine through a thermos vacuum valve and vacuum purge port, where the fuel is used.

Working
In the evaporative emission control system, the fuel goes into the fuel tank with the help of a check valve and
air is flowed with high pressure in the charcoal container, due to which the emitted fuel opens the valve on the
purge port and the fuel enters the combustion chamber (It reaches the combustion chamber), where the fuel is
combusted
Charcoal storage device
A container of activated charcoal is a storage device. Activated charcoal means porous charcoal with greater
surface area. It is used to store fuel vapor. This charcoal container or charcoal storage device is connected to
the fuel tank and filter line, which collects the vapor to the intake manifold. In some engines this device is also
attached to the carburetor.

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CITS : Automotive - Mechanic Diesel - Lesson 80 - 83