Four-stroke engine system

F - Mech Eng,Light,Heat,Weapons – 01 – M

Patent

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Details

F01M 9/06 (2006.01) B06B 1/10 (2006.01) F01M 11/06 (2006.01) F02B 63/02 (2006.01)

Patent

CA 2472431

A four-stroke engine employs engine vibration for lubricating engine components. The engine vibration induces a ripple in a surface portion of the oil in an oil reservoir, which is located within a crankcase of the engine. The oil ripple causes misting of the oil, which lubricates exposed engine components. Providing a crankcase wall thickness of about 1.5 mm or less can increase the engine vibration. Alternatively, a clearance area located within the crankcase can be decreased to facilitate contact of the oil surface ripple with a counterweight, thereby splashing the oil onto exposed engine components. Vibration of the engine can be further increased by coupling a vibration plate or spring to a portion of the crankcase.

Un moteur à quatre-temps utilise les vibrations du moteur pour en lubrifier les composants. Les vibration du moteur créent des rides à la surface de l'huile contenue dans le réservoir d'huile, situé à l'intérieur du carter du moteur. Ces rides provoquent la pulvérisation de l'huile, qui lubrifie alors les composants du moteur. Si la paroi du carter a une épaisseur inférieure ou égale à 1,5 mm, la vibration du moteur est accrue. On peut aussi réduire une section de passage à l'intérieur du carter du moteur pour faciliter le contact des rides à la surface de l'huile avec un contrepoids, pulvérisant ainsi l'huile sur les composants du moteur exposés. Les vibrations du moteur peuvent également être augmentées en couplant une plaque vibrante ou un ressort vibrant à une partie du carter.

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