Shell as a part of the engine cylinder head cover

after several generations of product integration and update

its die casting technology has become more complex

so the defect types and location distribution are more dispersed. In order to reduce defects in the production and manufacture process

at the early stage of the development

numerical simulation method was applied to understand accurately the aluminum liquid filling state and the distribution of the casting defects

greatly shortening the mold development cycle. Cylinder head cover shell parts were trial-produced with high vacuum die casting technology and common die casting. Through analyzing casting quality

it is found that the high vacuum die casting can produce the qualified cylinder head cover at the lower injection velocity and pressure.