Evaporative emission control system for internal combustion engi

Details Evaporative emission control system for internal combustion engi Evaporative emission control system for internal combustion engi

1992-10-22

1993-12-28

Hart, Douglas

Power plants

Internal combustion engine with treatment or handling of...

By means producing a chemical reaction of a component of the...

60290, 123520, F01N 336, F02M 3302

Patent

active

052728730

ABSTRACT:
An evaporative emission control system controls emission of evaporative fuel from an internal combustion engine having an intake system, an exhaust system, a catalytic converter arranged across the exhaust system, and a fuel tank. A charcoal canister is connected to the fuel tank for collecting evaporative fuel generated from the fuel tank. An exhaust purging passage is disposed to connect between the charcoal canister and the exhaust system for introducing evaporative fuel from the cansister together with purging air into the exhaust system at a location upstream of the catalytic converter. Load on the engine is detected. The exhaust purging passage is opened when the load on the engine detected is below a predetermined value.

REFERENCES:
patent: 3618314 (1971-11-01), Krebs
patent: 4467769 (1984-08-01), Matsumura
patent: 5158059 (1992-10-01), Kuroda

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