Vortex generator for sliding van internal combustion engine

Details Vortex generator for sliding van internal combustion engine Vortex generator for sliding van internal combustion engine

1998-04-30

1999-11-09

Koczo, Michael

Internal-combustion engines

Rotary

With compression, combustion, and expansion in a single...

123306, F02B 5300

Patent

active

059793953

ABSTRACT:
A method for reducing the exhaust pollution emissions in a two-stroke sliding vane internal combustion engine. First, fresh air is inducted into a vane cell, and fuel is injected into the cell at an ultra-lean fuel-air equivalence ratio less than about 0.65. The fuel is injected at a location such that a circumferential distance at mid-cell-height to the stator site at the onset of combustion is at least about 4 times a vane cell height at intake. The ultra-lean fuel-air combination is then compressed and thoroughly premixed prior to combustion to a dimensionless concentration fluctuation fraction below about 0.25. The ultra-lean, thoroughly premixed fuel-air combination is then combusted. The combusted fuel-air combination is purged after an expansion cycle. The premixing step prior to combustion may use inclined airfoils within the intake duct to produce counter-rotating mixing vortices.

REFERENCES:
patent: 1969202 (1934-08-01), Bugaud
patent: 5524586 (1996-06-01), Mallen
patent: 5632145 (1997-05-01), Hunt

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