Oil strainer structure of engine and oil return structure of...

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

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F01M 11/03 (2006.01) F01M 1/02 (2006.01) F01M 1/06 (2006.01) F01M 11/02 (2006.01)

Patent

CA 2597613

An oil strainer 51 includes: a lower member 52 having an oil suction hole 52f opening in oil stored in an oil pan; an upper member 53 having an oil discharge hole 53a leading to an oil pump; and a strainer element 55. The lower member 52 and the upper member 53 are joined to each other with the strainer element 55 held between joint surfaces of the upper and lower members 52 and 53. Thus, it is possible to form the oil strainer 51 into a flat shape so as to be compactly arranged in a narrow space, and also maximize an area of the strainer element 55 to prevent clogging. Further, the lower member 52 and the upper member 53, which are die-molded articles, are highly flexible in their shapes, whereby the oil suction hole 52f and the oil discharge hole 53a can be arranged in the most suitable positions, and the cross-sectional area of oil flow can be sufficiently secured.

Un filtre à huile 51 comprend un élément inférieur 52 doté d'un orifice de retour d'huile 52f ouvrant dans de l'huile entreposée dans un carter d'huile; un élément supérieur 53 doté d'un orifice d'écoulement d'huile 53a menant à une pompe à huile, et un élément filtrant 55. L'élément inférieur 52 et l'élément supérieur 53 sont joints l'un à l'autre avec élément filtrant 55 retenu entre les surfaces jointes des éléments supérieur et inférieur 52 et 53. Il est ainsi possible de former le filtre à huile 51 dans une forme plate afin d'être arrangé de manière compacte dans un espace étroit et aussi de maximiser une aire de l'élément filtrant 55 pour empêcher l'encrassement. De plus, l'élément inférieur 52 et l'élément supérieur 53, qui sont des articles moulés par matrice, sont hautement flexibles dans leur forme, au moyen desquels l'orifice de retour d'huile 52f et l'orifice d'écoulement d'huile 53a peuvent être arrangés dans les positions les plus appropriées, et l'aire en coupe transversale de l'écoulement d'huile peut être sécurisée.

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