Internal-combustion engines – Miscellaneous – Fuels – lubricants and additives
Reissue Patent
2010-04-28
2011-11-01
Kamen, Noah (Department: 3783)
Internal-combustion engines
Miscellaneous
Fuels, lubricants and additives
C123S494000
Reissue Patent
active
RE042876
ABSTRACT:
An apparatus and method for utilizing any arbitrary mixture ratio of multiple fuel gases having differing combustion characteristics, such as natural gas and hydrogen gas, within an internal combustion engine. The gaseous fuel composition ratio is first sensed, such as by thermal conductivity, infrared signature, sound propagation speed, or equivalent mixture differentiation mechanisms and combinations thereof which are utilized as input(s) to a “multiple map” engine control module which modulates selected operating parameters of the engine, such as fuel injection and ignition timing, in response to the proportions of fuel gases available so that the engine operates correctly and at high efficiency irrespective of the gas mixture ratio being utilized. As a result, an engine configured according to the teachings of the present invention may be fueled from at least two different fuel sources without admixing constraints.
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Heffel James W.
Park Chan Seung
Scott Paul B.
Kamen Noah
O'Banion John P.
The Regents of the University of California
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