F - Mech Eng,Light,Heat,Weapons – 02 – B
Patent
F - Mech Eng,Light,Heat,Weapons
02
B
123/249
F02B 23/08 (2006.01) F02F 1/38 (2006.01) F02B 75/18 (2006.01) F02F 1/24 (2006.01)
Patent
CA 1331120
IMPROVED HEAD FOR HIGH PERFORMANCE INTERNAL COMBUSTION ENGINE Abstract An improvement in a cast head for a high performance internal combustion engine of the type having a flat mounting surface and having, for each of several in-line circular piston areas, a wedge type combustion chamber extending from the head mounting surface and defined by a flat quenching surface and a concave, contoured wedge-shaped cavity forming surface. This wedge shaped cavity tapers outwardly from the quenching surface between a shallower portion adjacent the quenching surface to a deeper portion in which the valves are located. The improvement in this type of head includes providing the cavity forming surface the deeper area of the combustion chamber with a general contour of the type defined by two parallel intersecting, truncated cones gen- erally concentric to the two valve openings in the wedge shaped combustion chamber with a gradually contoured surface section be- tween the cones at the deeper area of the combustion chamber and a velocity increasing protuberance in the combustion chamber at the shallower portion of the cavity which protuberance includes a curved edge portion of the flat quenching surface, which edge portion extends inwardly of the wedge shaped cavity toward a posi- tion between the two valve seats and a built up mass of cast ma- terial sloping from the curved edge of the quenching surface toward the valve seats to guide gases from the combustion chamber through the exhaust outlet primarily and, to a lesser extent from the intake inlet into the combustion chamber. This velocity increasing mass of material adjacent the exhaust port of the combustion chamber in- creases the velocity through the exhaust port during the exhaust cycle of the internal combustion engine. Another improvement in- volves restricting the inlet passage for directing atomized fuel to the intake valve and then into the combustion chamber. This restriction increases velocity during the intake cycle of the in- ternal combustion engine.
498959
Smith Michael E.
Smith Richard W. Jr.
Autosales Incorporated
Deeth Williams Wall Llp
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