| US 7,520,271 B2 | ||
| Evaporated fuel adsorbing mechanism for internal combustion engine | ||
| Haruhiko Saito, Toyota (Japan) | ||
| Assigned to Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken (Japan) | ||
| Filed on Apr. 24, 2007, as Appl. No. 11/790,204. | ||
| Claims priority of application No. 2006-119565 (JP), filed on Apr. 24, 2006. | ||
| Prior Publication US 2007/0246023 A1, Oct. 25, 2007 | ||
| Int. Cl. F02M 33/02 (2006.01) | ||
| U.S. Cl. 123—519 [123/518] | 17 Claims |
| 1. An evaporated fuel adsorbing mechanism for an internal combustion engine, comprising:
an adsorbing member that is provided in an intake passage of the internal combustion engine to adsorb evaporated fuel that
flows back through the intake passage when the internal combustion engine is stopped,
said adsorbing member being provided in a housing located between an upstream intake air filter and a downstream intake passage
of the internal combustion engine, said adsorbing member having an outlet facing an inlet of said downstream intake passage;
wherein the adsorbing member includes
a pair of inclined side walls extending from an opening to the outlet, the outlet having an area that is substantially equal
to an area of the inlet of the downstream intake passage; and
wherein a slope of the inclined side walls and the area of the outlet are configured to suppress an increase in pressure loss
during operation of the internal combustion engine.
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