Intake device in engine for outboard engine system

Details Intake device in engine for outboard engine system Intake device in engine for outboard engine system

B - Operations, Transporting

63

H

B63H 20/32 (2006.01) F02B 61/04 (2006.01) F02B 75/22 (2006.01) F02F 7/00 (2006.01) F02M 35/116 (2006.01) F02M 35/12 (2006.01) F02M 35/16 (2006.01) F02B 1/04 (2006.01) F02B 75/18 (2006.01) F02F 1/24 (2006.01)

Patent

CA 2176897

A V-shaped multi-cylinder engine is mounted in such a manner that a crankshaft is mounted in a vertical attitude and cylinders are opened into a V-shape in a rearward direction. An intake silencer is mounted above a throttle body which is disposed in front of a crankcase portion of the engine. The intake silencer includes an intake silencing chamber defined by a belt cover which covers a belt of a valve operating mechanism and by a lower wall member. Two left and right air intake pipes extend downwardly from the intake silencing chamber and open into an engine compartment. A single intake-air introducing pipe extends downwardly from the intake silencing chamber and is connected to an upper end of the throttle body. Thus, it is possible to reduce the intake noise of the engine for an outboard engine system.

Un moteur multi-cylindres en V est monté de façon que le vilebrequin soit à la verticale et que les cylindres forment un V ouvert en direction arrière. Un silencieux d'entrée est monté au-dessus d'un corps de papillon qui est placé à l'avant d'une partie du carter moteur. Le silencieux d'entrée comprend une chambre d'insonorisation d'entrée délimitée par un cache-courroie qui recouvre une courroie de distribution et un élément de paroi inférieure. Deux tuyaux gauche et droit d'alimentation en air se prolongent vers le bas à partir de la chambre d'insonorisation d'entrée et jusque dans un compartiment moteur. Un simple tuyau d'alimentation en air se prolonge vers le bas à partir de la chambre d'insonorisation d'entrée pour aller se raccorder à l'extrémité supérieure du corps de papillon. Ainsi, il est possible de réduire le bruit d'entrée du moteur pour un système de moteur hors-bord.

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