Aluminum engine

Claim 1

AN ENGINE ASSEMBLY COMPRISING AN ENGINE BLOCK ASSEMBLY INCLUDING AN ENGINE BLOCK OF A LIGHTWEIGHT METAL COMPRISING A PLURALITY OF IN-LINE VERTICALLY UPWARDLY EXTENDING CYLINDER BORES EACH HAVING A CYLINDRICAL CAST IRON SLEEVE SECURED THEREIN, AN UPPER RIM PORTION HAVING A PLURALITY OF BORES THERETHROUGH AND CONNECTED TO AN UPPER PORTION OF EACH OF SAID CYLINDER BORES BY A WEB PORTION, A LOWER WEB PORTION EXTERNALLY INTERCONNECTING EACH OF SAID CYLINDER BORES AT A LOWER PORTION THEREOF, AN OUTWARDLY EXTENDING CRANKCASE PORTION INTEGRAL WITH SAID LOWER WEB PORTION, A PLURALITY OF TRANSVERSELY EXTENDING LOWER RIB PORTIONS DISPOSED IN SAID CRANKCASE PORTION EACH DEFINING A RECESS AT ITS LOWER EXTREMITY AND EACH HAVING A PAIR OF SPACED BORES EXTENDING VERTICALLY THERETHROUGH, EACH OF SAID SPACED BORES BEING INDIVIDUAL TO AND IN AXIAL ALIGNMENT WITH ONE OF SAID PLURALITY OF BORES IN SAID UPPER RIM PORTION, SAID ENGINE BLOCK HAVING A LONGITUDINALLY EXTENDING SLOT OPENING OUTWARDLY ON ONE SIDE THEREOF, AND EACH OF A PLURALITY OF PASSAGEWAYS INTERCONNECTING SAID SLOT WITH THOSE OF SAID SPACED BORES ON SAID ONE SIDE, AND INCLUDING REMOVABLE WATER JACKET MEMBERS DISPOSED ON OPPOSITE SIDES INCLUDING SAID ONE SIDE OF SAID ENGINE BLOCK TO DEFINE THEREIN A CHAMBER FOR THE CIRCULATION OF A COOLANT, THAT ONE OF SAID WATER JACKET MEMBERS ON SAID ONE SIDE OF SAID ENGINE BLOCK DISPOSED IN SEALING RELATIONSHIP WITH SAID SLOT THEREBY DEFINING AN OIL GALLERY FOR THE TRANSMISSION OF A LUBRICATING FLUID WITHIN SAID ENGINE BLOCK; EACH OF A PLURALITY OF BEARING BLOCK ASSEMBLIES HAVING A MAIN BEARING MEMBER AND BEING INDIVIDUAL TO ONE OF SAID PLURALITY OF LOWER RIB PORTIONS AND MATABLY DISPOSED WITHIN SAID RECESS DEFINED THEREIN, EACH OF SAID BEARING BLOCK ASSEMBLIES HAVING A PASSAGEWAY COMMUNICATING THAT ONE OF SAID SPACED BORES ON SAID ONE SIDE OF SAID ENGINE BLOCK WITH WHICH IT IS INDIVIDUAL WITH SAID MAIN BEARING MEMBER; A CYLINDER HEAD ASSEMBLY DISPOSED ON SAID UPPER RIM PORTION; CLAMPING MEANS EXTENDING THROUGH SAID SPACED BORES IN SAID LOWER RIB PORTIONS; AND MEANS INDEPENDENT AND SEPARATE FROM SAID ENGINE BLOCK BEING ENGAGEABLE WITH SAID CLAMPING MEANS FOR CLAMPING SAID BEARING BLOCK ASSEMBLIES AND SAID CYLINDER HEAD ASSEMBLY TO SAID ENGINE BLOCK, PORTIONS OF EACH OF THOSE OF SAID PLURALITY OF STUDS EXTENDING THROUGH THOSE OF SAID SPACED BORES ON SAID ONE SIDE OF SAID ENGINE BLOCK BEING OF A PREDETERMINED CROSS SECTIONAL AREA RELATIVE TO THE CROSS SECTIONAL AREA OF SAID SPACED BORES TO PROVIDE CLEARANCE THEREBETWEEN FOR THE PASSAGE OF THE LUBRICATING FLUID FROM SAID OIL GALLERY.