Evaporative emission system for improving engine starting charac

Details Evaporative emission system for improving engine starting charac Evaporative emission system for improving engine starting charac

1977-08-12

1979-12-04

Myhre, Charles J.

Internal-combustion engines

Intake manifold

Manifold tuning, balancing or pressure regulating means

251137, F02M 3302

Patent

active

041766393

ABSTRACT:
An evaporative emission system for an engine includes a float chamber of a carburetor connected to a charcoal canister via an inlet port and an outlet port. The emission system is characterized in that an electromagnetic opening and closing mechanism for actuating a valve which selectively opens and closes the inlet port is controlled by a temperature-sensitive switch so that evaporation of low-boiling-point components of fuel and absorption thereof by the charcoal is prevented at low temperatures even in case of long periods during which the engine is not running. The starting characteristics of the engine are thus maintained.

REFERENCES:
patent: 2842334 (1958-07-01), Short
patent: 2875780 (1959-03-01), Martin
patent: 3191587 (1965-06-01), Hall
patent: 3221724 (1965-12-01), Wentworth
patent: 3456635 (1969-07-01), Hervert
patent: 3534720 (1970-10-01), DuBois
patent: 3680318 (1972-08-01), Nakajima et al.
patent: 3831572 (1974-08-01), Csicsery

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