Engine cylinder head assembly having planar and cast components

Details Engine cylinder head assembly having planar and cast components Engine cylinder head assembly having planar and cast components

F - Mech Eng,Light,Heat,Weapons

02

F

F02F 1/32 (2006.01) F02F 1/24 (2006.01) F02F 1/38 (2006.01) F02B 75/02 (2006.01)

Patent

CA 2214508

The cylinder head assembly (10) includes a cast member (12), and a substantiallyplanar member (14) that is affixed to an upper end of the case member (12). The substantially planar member (14) includes apertures (74, 76) to anchor the intake and exhaust rocker studs (79), apertures that receive the intake and exhaust valve, and apertures that receive the push rod guides. The substantially planar member also has spring locators for the intake and exhaust valve (32) return springs. The cast member (12) is affixed to the engine cylinder (17), and includes cast intake and exhaust manifolds (26), bosses for receiving the intake and exhaust valves (32), a cast pocket for receiving the intake and exhaust push rods (72), and air cooling fins (68). A head cover (16) is disposed on an opposite side of the planar member (14). The invention eliminates the need for two cast components.

L'ensemble culasse (10) comprend une pièce coulée (12) ainsi qu'un élément sensiblement plan (14) fixé à une extrémité supérieure de la pièce moulée (12). L'élément sensiblement plan (14) comprend des ouvertures (74, 76) destinées à l'ancrage des goujons (79) de culbuteur d'admission et d'échappement, des ouvertures recevant les soupapes d'admission et d'échappement, ainsi que des ouvertures recevant les guides de tiges de poussoirs. L'élément sensiblement plan présente également des positionneurs à ressort destinés au ressort de rappel de soupapes d'admission et d'échappement (32). La pièce coulée (12) est fixée au cylindre (17) du moteur et comprend des collecteurs d'admission et d'échappement coulés (26), des protubérances destinées à recevoir des soupapes d'admission et d'échappement (32), une poche coulée destinée à recevoir les tiges de poussoirs d'admission et d'échappement (72) ainsi que des ailettes de refroidissement à air (68). Un couvercle (16) de culasse est disposé sur le côté opposé de l'élément plan (14). L'invention ne nécessite pas deux pièces coulées.

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