Bi-fuel control system and retrofit assembly for diesel engines
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United States of America Patent
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Apr 8, 2003
Grant Date -
Jan 24, 2002
app pub date -
Jun 11, 2001
filing date -
Oct 13, 1998
priority date (Note) -
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Abstract
A bi-fuel control system and assembly for modifying and operating a diesel engine to the extent that the engine is capable of running in either a full diesel fuel mode or a bi-fuel mode, where bi-fuel is defined as a mixture of a methane based gas and diesel fuel. The control system and assembly are designed to provide for either manual or automatic transfer between modes for continuous engine operation without interruption in output and at substantially equivalent efficiency levels. A gas control sub-system and sub-assembly are provided to control the amount of gas supplied to the diesel engine in the bi-fuel mode, and an electronic control sub-system and sub-assembly are provided to control the overall system and assembly based on engine load as determined from the intake manifold air pressure.
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