Extended circumference intake poppet valve system for opening an

Details Extended circumference intake poppet valve system for opening an Extended circumference intake poppet valve system for opening an

1990-07-03

1991-04-09

Myhre, Charles J.

Internal-combustion engines

Four-cycle

Single poppet valve

123 9012, 123188AA, 123188R, F01L 128, F01L 300

Patent

active

050055380

ABSTRACT:
An extended circumference intake poppet valve system for use with a single charge carrying intake duct/port to an engine cylinder in a four cycle internal combustion engine to include three or more annular intake poppet valves (secondary valves), annular valve seats (mini ports), disposed within a primary valve head which spans said single duct/port (valve system), said valve system in fluid communication with said duct and said cylinder for opening and sealing said duct/port at said duct seat, intake valve lifting and closing means, wherein the area of the duct/port, and the matched area of the open valves are substantially equal for an extended optimum charge flow period, and in addition, valve open areas at all valve lift points during the inlet event that occur, initially and throughout extended duration through closure, are enlarged when compared with a single poppet valve servicing the same duct/port, resulting in greatly enhanced charge volume into the cylinder during the intake event.

REFERENCES:
patent: 1690384 (1928-11-01), Trego
patent: 1765359 (1930-06-01), Adamson
patent: 1828792 (1931-10-01), Tuerbakk
patent: 3881459 (1975-05-01), Gaetcke
patent: 4094277 (1978-06-01), Goto et al.
patent: 4484545 (1984-11-01), Madsen
patent: 4942850 (1990-07-01), Hernandez

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