Method and devices for the control of the air-fuel ratio of an internal combustion engine
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United States of America Patent
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May 1, 2012
Grant Date -
Dec 31, 2009
app pub date -
Feb 7, 2007
filing date -
Mar 30, 2006
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Abstract
Methods and devices for controlling the normalized air-fuel ratio of an internal combustion engine, otherwise known, in technical terms, as Lambda. The present invention is based on the use of the ionization current released by a device positioned on each cylinder of the engine. This ionization current is measured by a Control Unit equipped with a low-pass filter and electronic means which implement the invention.
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