Structure of an exhaust port in an internal combustion engine

Details Structure of an exhaust port in an internal combustion engine Structure of an exhaust port in an internal combustion engine

1997-03-17

1998-10-06

Solis, Erick R.

Internal-combustion engines

Valve

Valve head cooperates with manifold

1231935, F02F 142

Patent

active

058162100

ABSTRACT:
A structure of an exhaust port (2) in an internal combustion engine is provided, which is capable of increasing the flow in the exhaust port (2) by regulating the flow of exhausted gases produced around a valve stem (4a). In the exhaust port (2) formed in a cylinder head (1), which has therein a boss (7) inserted with a valve guide (5) supporting a valve stem (4a) of an exhaust valve (4), a projection (3) is extended from the boss (7) of the valve guide (5) toward an opening port (P) and projects into the exhaust port (2). The projection (3) is provided on an exhaust-port wall (2a) opposite of an exhaust exit-port (E) about the valve stem (4a).

REFERENCES:
patent: 4095578 (1978-06-01), Allara et al.
patent: 4228653 (1980-10-01), Sperry
patent: 4302935 (1981-12-01), Cousimano
patent: 4537028 (1985-08-01), Humke
patent: 4606308 (1986-08-01), Furlong
patent: 4694646 (1987-09-01), Holmstrom
patent: 5081965 (1992-01-01), Walters et al.

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