Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – With indicator or control of power plant
Reexamination Certificate
2008-09-10
2009-12-01
Cronin, Stephen K (Department: 3747)
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
With indicator or control of power plant
C123S525000
Reexamination Certificate
active
07627416
ABSTRACT:
In an internal combustion engine that can burn two fuels, the main fuel may become unavailable, either temporarily or until the main fuel is replenished. The present apparatus determines when to fuel an engine with main fuel and secondary fuel, or secondary fuel alone. The apparatus includes a main-fuel supply system comprising a main-fuel injection valve that introduces main fuel into an engine combustion chamber; a secondary-fuel injection system comprising a secondary-fuel injection valve that introduces secondary fuel directly into the combustion chamber; a pressure sensor associated with the main-fuel supply system for determining injection pressure inside the main-fuel injection valve; and an electronic controller in communication with the pressure sensor and programmable to separately command actuation of the secondary-fuel and the main-fuel injection valve when injection pressure is greater than a predetermined threshold, and to otherwise command actuation of the secondary-fuel injection valve and not the main-fuel injection valve.
REFERENCES:
patent: 4535728 (1985-08-01), Batchelor
patent: 4742801 (1988-05-01), Kelgard
patent: 5816224 (1998-10-01), Welsh et al.
patent: 6101986 (2000-08-01), Brown et al.
patent: 7019626 (2006-03-01), Funk
patent: 2007/0199539 (2007-08-01), Lennox et al.
patent: 2008/0103676 (2008-05-01), Ancimer et al.
patent: 2008/0262701 (2008-10-01), Williams et al.
patent: 1186773 (1985-05-01), None
Batenburg Greg
Chambers Douglas
Thompson Jeff
Castro Arnold
Cronin Stephen K
McAndrews Held & Malloy Ltd.
Westport Power Inc.
LandOfFree
Method and apparatus for operating a dual fuel internal... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for operating a dual fuel internal..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for operating a dual fuel internal... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4110744