Patent ID: 6363893
Filing Date: 2002-04-02
Classification: F02B,F02F

Abstract:
An engine comprising;an engine block having a plurality of cylinders; a cylinder head having first and second ends, an upper wall and a lower wall, said lower wall defining a plurality of cylinder top walls, said cylinder head being disposed on said engine block such that each of said plurality of cylinder top walls overlie a corresponding one of said plurality of cylinders, a first of said plurality of cylinder top walls being located near said first end of said cylinder head and a second of said plurality of cylinder top walls being near said second end of said cylinder head, said cylinder head lower wall having at least one prominence at each of said cylinder top walls such that said lower wall adjacent said cylinder top walls is relatively recessed as compared to said lower wall at said cylinder top walls, said upper wall being spaced from said lower wall and cooperating with said lower wall to at least partially define a water jacket passageway through which fluid flows through said head from said first end toward said second end; and, a plurality of ribs extending downwardly from said upper wall toward said lower wall, one of said plurality of ribs being disposed between one of said first and second ends of said head and an associated one of said first and second cylinder top walls, and wherein said plurality of ribs includes at least one set of ribs disposed relatively between adjacent cylinder top walls, each of said at least one set of ribs comprising a plurality of individual ribs.