Electronically controlled outwardly opening valve system for an

Details Electronically controlled outwardly opening valve system for an Electronically controlled outwardly opening valve system for an

1997-03-07

1998-01-20

Lo, Weilun

Internal-combustion engines

Poppet valve operating mechanism

Hydraulic system

123 9011, 123 9024, F01L 902, F01L 904

Patent

active

057091781

ABSTRACT:
An outwardly opening valve system for an engine includes an actuator body having a guide bore, a fluid cavity filled with hydraulic fluid that opens to a valve plunger bore, an intensifier plunger bore and a re-supply passageway. A check valve positioned in the re-supply passageway is operable to prevent back flow of hydraulic fluid from the fluid cavity. An outward valve member with a valve face is positioned to reciprocate in the guide bore. An intensifier plunger is slidably positioned in the intensifier plunger bore. A valve plunger is slidably positioned in the valve plunger bore. An over center cam mechanism includes a cam mounted to the actuator body and rotatable about a pivot pin, a push rod with one end in contact with the cam and an other end in contact with the outward valve member, and finally the pivot pin is attached to the valve plunger. A solenoid is mounted on the actuator body and includes a control rod. A computer is in communication with and capable of controlling the solenoid.

REFERENCES:
patent: 1129393 (1915-02-01), Huff
patent: 1405597 (1922-02-01), Kirby
patent: 1491023 (1924-04-01), Belden
patent: 1539227 (1925-05-01), Wood
patent: 1695011 (1928-12-01), Fornaca
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patent: 1965517 (1934-07-01), Vitalini
patent: 2552006 (1951-05-01), Gill, Jr.
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patent: 5531192 (1996-07-01), Feucht et al.
patent: 5636602 (1997-06-01), Meister

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