Shroud and combustion chamber for an internal combustion engine

Details Shroud and combustion chamber for an internal combustion engine Shroud and combustion chamber for an internal combustion engine

1996-12-23

1998-01-20

Solis, Erick R.

Internal-combustion engines

Particular piston and enclosing cylinder construction

Cylinder head

1231887, F02F 142

Patent

active

057091838

ABSTRACT:
The present invention provides an internal combustion engine combustion chamber with at least one shrouded exhaust valve. The combustion chamber is partially defined by a cylinder head having an exhaust port and a throat opening to the combustion chamber with an exhaust valve with an enlarged head portion cooperative with the throat to regulate exhaust flow therethrough. The exhaust valve shroud is formed by a projecting portion of the cylinder head interiorly of the combustion chamber and located adjacent to the exhaust valve. During the exhaust cycle of the combustion chamber, the shroud cooperates with the peripheral edge of the exhaust valve head to inhibit a direct flow of exhaust rich in unburned hydrocarbons between the surface of the shroud and the edge of the exhaust valve.

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patent: 5230310 (1993-07-01), Hashimoto
patent: 5601061 (1997-02-01), Dam et al.

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