In-line cylinder head for internal combustion engine

Details In-line cylinder head for internal combustion engine In-line cylinder head for internal combustion engine

1991-12-09

1992-08-18

Wolfe, WIllis R.

Internal-combustion engines

Particular piston and enclosing cylinder construction

Cylinder head

123306, 12318812, 123 60, F02B 2308

Patent

active

051389908

ABSTRACT:
An improved cast cylinder head for a high performance internal combustion engine is provided by an especially configured quench surface from which a contoured combustion chamber extends having a metal mass buildup shrouding the exhaust gases through the exhaust valve seat. A metal mass buildup configuration is also provided about the intake valve seat which acts in conjunction with an especially configured and proportioned valve intake passage to draw the fuel-air mixture into the combustion chamber in an unshrouded, helical flow pattern. The intake passageway configuration is such that a rich fuel-air mixture is drawn through the intake valve seat at a portion thereof remote from said exhaust valve seat while a lean fuel-air mixture exits the intake valve seat adjacent the exhaust valve seat. Positioning the fuel-air mixture in such a manner in combination with the unshrouded metal mass buildup minimizes short-circuiting of the fuel through the exhaust valve seat in a valve overlap condition.

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