Engine intake system

Details Engine intake system Engine intake system

F - Mech Eng,Light,Heat,Weapons

02

M

F02M 35/10 (2006.01) F02M 35/02 (2006.01)

Patent

CA 2649943

In an engine intake system, an air cleaner and downstream sides of throttle valves in throttle bodies provided in intake passages are connected by bypass passages. An idle speed control apparatus provided at a midpoint of the passage controls amounts of air supplied during an idling operation. End portions of the bypass passages connected to the throttle bodies are located in higher positions than end portions of the bypass passages connected to the air cleaner so that the bypass passages are inclined downward toward the air cleaner. As a result, water is prevented from blocking the bypass passages via a simple structure.

L'invention porte sur un système d'admission de moteur, un filtre à air et les côtés aval des papillons dans les corps d'étrangleurs des passages d'admission qui sont reliés par des passages de dérivation. Un dispositif régulateur de bas régimes est installé à un point central du passage pour réguler les quantités d'air fournies pendant une période de fonctionnement à bas régime. Les extrémités des passages de dérivation raccordées aux corps d'étrangleurs sont montées plus haut que celles qui mènent au filtre à air, de telle sorte que les passages de dérivation sont inclinés vers le bas. L'eau ne peut donc pas les obstruer et l'on obtient ce résultat grâce à une structure fort simple.

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