Casting and machining of an internally ported and passaged cylinder head

Abstract

Abstract CYLINDER HEAD CORING TO PROVIDE INTERNAL PORTS AND WATER PASSAGES THEREIN, AND A METHOD COMBINING THE STEPS OF CASTING-IN METAL TO FORM THE HEAD CASTING, AND MACHINING OF THE CASTING THEREAFTER. AN INTAKE OR EXHAUST PASSAGE WITH DUAL PORTS IS CAST INTENTIONALLY WITH AT LEAST ONE IMPERFECT PORT ONLY PARTIALLY COMPLETED AT THE END. MORE SPECIFICALLY, IT IS BY PROVISION OF NO BACK DRAFT ON ONE OF THE LEGS OF THE PORT CORE, THAT IT BECOMES POSSIBLE TO DESIGN AN ADJACENT WATER PASSAGE WHICH IS MATERIALLY ENLARGED IN CROSS SECTION YET, AT THE SAME TIME, THE RESULTING CORED PORT IS IMPERFECT BECAUSE INCOMPLETE AS INDICATED. HOWEVER, THE PORT IS READILY COMPLETED BY ENLARGING IT WITH A MACHINING OPERATION, INSURING SATISFACTORY PORTING AND AFFORDING AT THE SAME TIME A SEPARATE WATER PASSAGE OF APPRECIABLE SIZE LOCATED THEREADJACENT.

Inventors

• 👤 Robert P Kobiara

Bibliographic Details