Internal-combustion engines – Four-cycle – Rotating valve
Patent
1995-06-05
1996-09-24
Okonsky, David A.
Internal-combustion engines
Four-cycle
Rotating valve
12319014, F01L 700
Patent
active
055580491
ABSTRACT:
A valve system for fluid processing machines which provides fully dynamic control over aspiration events. In the case of an internal combustion engine application, the variable orbital aperture valve system includes a rotary valve in the form of an "orbiter" disc having primary intake and exhaust apertures provided therein for sealing with the head of the combustion chamber and periodically aligning with intake and exhaust ports therein to thereby periodically aspirate the combustion chamber. The orbiter is connected by a linkage to the crank shaft of the internal combustion engine, and turns at typically one-half the crank shaft speed. The variable orbital aperture valve system further includes at least one "floater" disc having a secondary aperture therein which, depending upon the selected placement of the secondary aperture with respect to the respective intake or exhaust port, the aforesaid alignment with the primary intake or exhaust aperture of the orbiter is thereby modified. The selected position of the secondary aperture with respect to a respective intake or exhaust port is effected by a stepper motor turning the floater a selected number of degrees under computer control, such as for example by the ECM. The orbiter is sealed with respect to the one or more floaters, and the orbiter and the one or more floaters are collectively sealed with respect to the head.
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Internal Combustion Engine Fundamentals, John B. Heywood, McGraw-Hill Book Co., pp. 223-225 Dated Jan. 1988.
Keefe Peter D.
Okonsky David A.
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