Supplemental fuel vapor system

Internal-combustion engines – Charge forming device – Having fuel vapor recovery and storage system

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Details

123523, 123575, F02M 3900

Patent

active

049827154

ABSTRACT:
A vapor utilization fuel system directs fuel vapor from a vehicle's fuel tank to an intake manifold on the vehicle's engine. The vapor is combusted in the normal course of engine operation. In one embodiment, a mixing canister combines additional air with the fuel vapor; the mixing canister is located on the fuel tank's fill tube. In a second embodiment, the fuel vapor can flow to either the intake manifold or to a conventional carbon canister when the engine is not running.

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