Internal combustion engine using dynamic resonating air chamber
This patent describes an internal combustion engine including a movable piston in a variable volume combustion chamber having an effective diametrical dimension D and defined in part by fixed walls and in part by a working force of the piston, intake and exhaust valve means for controlling flow of charge and exhaust products to and from the combustion chamber; and fuel and air supply means for preparing and supplying a charge to the combustion chamber; the improvement comprising, the combustion chamber is configured such that, at and closely proximate the minimum combustion chamber volume position of the piston, the combustion chamber is effectively temporarily divided into an ignition chamber having a volume V/sub A/ and a resonating chamber having a volume V/sub B/ with a temporary restricted connecting passageway means between the chamber. The temporary passageway being effectively removed as the piston moves away from its minimum volume position. The passageway means having a length L measured along a line connecting V/sub A/ and V/sub B/, an average transverse dimension g measured across its width approximately perpendicular to the length L, a cross-sectional area S at its transverse dimension g, and a volume V/sub p/ of SxL; the ignition of each charge producing periodic combustion wave energy of frequency F/sub A/ which travels near the speed of sound C/sub A/ within the ignition chamber at approximately the autoignition temperature of the charge in the ignition chamber; the passageway dimensions g and L being arranged to quench flame propagation between V/sub A/ and V/sub B/ during substantially the time the piston is at and closely proximate its minimum volume position.
- Assignee:
- Sonex Research, Inc., Annapolis, MD
- Patent Number(s):
- US 4788942
- OSTI ID:
- 6232862
- Resource Relation:
- Patent File Date: Filed date 30 Jun 1986
- Country of Publication:
- United States
- Language:
- English
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