Internal-combustion engines – Valve – Valve head cooperates with manifold
Patent
1981-09-23
1984-03-27
Argenbright, Tony M.
Internal-combustion engines
Valve
Valve head cooperates with manifold
123306, F01L 306, F02F 142
Patent
active
044387407
ABSTRACT:
A valve seat insert surrounds an inlet valve of a reciprocating internal combustion engine and provides a seat for a movable valve. The flow characteristics of a charge of air or an air/fuel mixture leaving the inlet valve are determined at least in part by the form of the valve seat insert and these characteristics can affect the performance of the internal combustion engine. The improved valve seat insert defines an aperture through which the charge passes. The aperture has an area to one side of a plane including the axis of an annular valve engaging surface of the insert which is greater than the area of the aperture to the other side of the plane. The smaller of the areas is bounded by one or more curved sections. This insert can be used in an internal combustion engine or deflect a charge passing through the aperture and to give the charge a velocity profile which, for example, improves starting and reduces fuel consumption.
REFERENCES:
patent: 1512952 (1924-10-01), Secor
patent: 2921571 (1960-01-01), Vogel et al.
patent: 3640261 (1972-02-01), Josey
patent: 3653368 (1972-04-01), Scherenberg
patent: 4036202 (1977-07-01), Weslake
Argenbright Tony M.
Brico Engineering Limited
Wolfe W. R.
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