Fuel supply system for an internal combustion engine

Details Fuel supply system for an internal combustion engine Fuel supply system for an internal combustion engine

2006-05-16

2006-05-16

Moulis, Thomas (Department: 3747)

Internal-combustion engines

Charge forming device

Having fuel vapor recovery and storage system

Reexamination Certificate

active

07044112

ABSTRACT:
In a fuel supply system for an internal combustion engine including a fuel tank with an activated carbon canister in communication therewith for removing hydrocarbons from the fuel tank venting gases, the activated carbon canister is vented selectively by compressed air conducted from a pressurized air supply for the engine through the canister under the control of a valve which, during flushing of the activated carbon canister, blocks the communication line between the fuel tank and the activated carbon canister and by which the fuel vapors are returned to an engine intake manifold via a suction line, or during normal operation of the engine, by air sucked through the activated carbon container to an inlet manifold of the engine. The activated carbon container can be flushed with positive pressure when the engine is operated with supercharging and with negative pressure when the engine is operated in a normally aspirated fashion.

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