Method and apparatus for controlling liquid fuel delivery...

Details Method and apparatus for controlling liquid fuel delivery... Method and apparatus for controlling liquid fuel delivery...

2011-03-29

2011-03-29

Huynh, Hai H (Department: 3747)

Internal-combustion engines

Charge forming device

Combined liquid and gaseous fuel

C123S0270GE, C123S431000, C123S575000

Reexamination Certificate

active

07913673

ABSTRACT:
A method of transitioning between operating modes in a multimode engine including a diesel-only mode and a diesel pilot, gas mode includes first terminating or initiating the supply of a gaseous fuel, depending on whether the system is transitioning to or from the pilot mode, and thereafter decreasing or increasing the diesel fuel supply quantity. Liquid fuel supply quantity is preferably altered in steps rather than discretely in order to avoid exceeding the lean limit of gas lambda. The number of steps and the percentage decrease or increase in each step preferably varies based at least in part on prevailing speed and load conditions.

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