Air intake device of engine

F - Mech Eng,Light,Heat,Weapons – 02 – M

Patent

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Details

F02M 35/10 (2006.01) F02D 9/08 (2006.01) F02M 3/07 (2006.01)

Patent

CA 2649945

An air intake device of an engine includes a throttle body provided in an intake passage of an engine, a bypass passage arranged to connect an upstream side and a downstream side of a throttle valve disposed in the throttle body, an idle number-of-revolutions control device that is disposed in the bypass passage and that controls the quantity of air passing through the bypass passage and flowing into the downstream side of the throttle valve according to the state of the engine, and a water collection portion that is disposed on the upstream side of the idle number-of-revolutions control device in the bypass passage and that is constructed so as to include a space portion connecting with the bypass passage. This structure enables smooth operation of the idle number-of-revolutions control device and prevents damage thereto caused by water in a bypass passage.

Un dispositif à prise d'air de moteur comprend les éléments qui suivent. Un élément étrangleur situé dans le passage d'admission du moteur; une dérivation agencée pour raccorder le côté amont et le côté aval du papillon des gaz aménagé dans l'élément étrangleur; un dispositif de régulation du nombre de tours au ralenti, aménagé dans la dérivation et qui régule la quantité d'air qui traverse la dérivation et afflue du côté aval du papillon des gaz, selon le régime du moteur; et une partie de collecte de l'eau, disposée du côté amont du dispositif de régulation du nombre de tours au ralenti dans la dérivation et dont la configuration comprend une partie vide communiquant avec la dérivation. Cette structure assure le fonctionnement régulier du dispositif de régulation du nombre de tours au ralenti et empêche les dommages causés par l'eau dans la dérivation.

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