Ultra lean burn carburetted adiabatic engine
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United States of America Patent
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Feb 19, 1985
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N/A
app pub date -
Jan 10, 1983
filing date -
Jan 10, 1983
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Expired
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Abstract
An improved carburetted internal combustion engine (10) which operates with an extremely lean mixture, without a conventional cooling system, and at an elevated temperature characteristic of an adiabatic engine. The engine uses two ignition sources (20, 21) symmetrically disposed about the center of the cylinder head, and/or a third igniting and microwave coupling means (19) at the center, to achieve extreme lean mixture combustion and relatively fast burn necessary for adiabatic engine operation. The engine incorporates other features to improve its efficiency and emissions, including engine air-throttling through controlled intake valve closure and unconventional valve timing.
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