Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
June 16, 2009
Patent Application Number
12111833
Date Filed
April 29, 2008
Patent Citations Received
Patent Primary Examiner
Patent abstract
Various approaches are described for controlling operation of an engine. One example method includes delivering a gaseous fuel to the engine during a first operating range when an amount of stored gaseous fuel is greater than a threshold; and disabling the delivery of the gaseous fuel during the first operating range when the amount of stored gaseous fuel is less than the threshold and delivering a second fuel to operate the engine, yet continuing to deliver the gaseous fuel to start the engine during a cold start even when the amount of stored gaseous fuel is less than the threshold.
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