Cylinder head for four-cycle internal combustion engines

Details Cylinder head for four-cycle internal combustion engines Cylinder head for four-cycle internal combustion engines

1983-08-08

1985-01-22

Cuchlinski, Jr., William A.

Internal-combustion engines

Cooling

With cooling of additional parts or materials

123 9027, 123188R, F01L 100

Patent

active

044944896

ABSTRACT:
A cylinder head for four-cycle internal combustion engines with a concave combustion space portion, in which are arranged one inlet and one exhaust valve each with a relatively small V-angle; the center axis of the inlet and exhaust valves are located in cross planes offset transversely to the V-angle; the spark gap of a spark plug is offset transversely to the exhaust valve and is arranged approximately in the cross plane of the inlet valve; the V-angle of the valves is pivoted toward the side of the inlet valve with respect to the associated cylinder center axis by an angle of about 2.degree. to about 10.degree.; the combustion space portion in the cylinder head has an approximately flat half streamline cross-sectional shape in the direction of the V-angle whereby the relatively high part of the combustion space portion is arranged within the area of the spark gap and of the exhaust valve; the relatively low portion of the combustion space part narrows in the opposite area containing the inlet valve and the adjacent projection of the associated cylinder bore in a flat wedge-shaped manner and/or into at least a partially circumferential edge squeeze gap.

REFERENCES:
patent: 3164143 (1965-01-01), Dolza
patent: 4367707 (1983-01-01), Suzuki

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